A comprehensive review on the pharmacological properties of Diplazium esculentum, an edible fern

Review Article | DOI: https://doi.org/10.31579/2693-7247/014

A comprehensive review on the pharmacological properties of Diplazium esculentum, an edible fern

  • Subhrajyoti Roy 1
  • Tapas Kumar Chaudhuri 2*

1 Cellular Immunology Laboratory, Department of Zoology, University of North Bengal, Siliguri, West Bengal, India. 
2  Immunopharmacology and Molecular Cell Biology Laboratory, Department of Zoology, University of Gour Banga, Malda, West Bengal, India. 
3 Department of Biotechnology, Brainware University, Kolkata, West Bengal, India.

*Corresponding Author: Tapas Kumar Chaudhuri, Adjunct Professor, Department of Biotechnology, Brainware University, Kolkata - 700125, West Bengal, India,

Citation: Roy S. and Tapas K. Chaudhuri, (2020) A comprehensive review on the pharmacological properties of Diplazium esculentum, an edible fern J, Pharmaceutics and Pharmacology Research 3(1); DOI: 10.31579/2693-7247/014

Copyright: © 2020, Tapas Kumar Chaudhuri, This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Received: 06 September 2020 | Accepted: 17 September 2020 | Published: 05 October 2020

Keywords: bioactive compounds; pharmacological activity; immunomodulation; neuromodulation; antioxidant

Abstract

Diplazium esculentum (Family: Athyriaceae), one of the most popular wild edible fern, is considered as a pharmacologically diverse ethnomedicinal plant. The coiled fronds and young leaves of this plant have a wide range ethnomedicinal uses in folk medicine around the world directed for a number of ailments. The present article is the first comprehensive review on the pharmacological activities of this particular edible fern. The structural formulas of all the chemical constituents identified and isolated so far from D. esculentum are also provided in the present review. The most thoroughly studied pharmacological activities viz., antioxidant, antimicrobial, immunomodulatory, neuromodulatory, anti-fertility, cytotoxic, etc.) of the D. esculentum extracts have been discussed. This comprehensive review will be of help for the future researchers investigating for more potent compounds and their pharmacological activities.

Introduction

Ferns are one of the most widely used wild edible groups of plants throughout the world. Their origin have been dated back to the Paleozoic era and they constitute the primitive vascular plant group which is found scattered all over the world. Due to their primitive origin, ferns have been well adapted with various changes of the environment than other primitive vascular plants of the world (Wallace et al. 1991). Therefore, ferns are expected to have many useful phytochemicals than other plants. The presence of these diverse groups of phytochemicals largely influence the pharmacological properties of ferns when they are consumed, which ultimately determines its beneficial and / or detrimental effects on human and animal health. It is interesting to note that only a few of the fern groups are used as food throughout the world. The fern stems, rhizomes, leaves, young fronds and shoots, and sometimes the whole plants are used for food (Liu et al., 2012). Diplazium esculentum (Koenig ex Retz.) Sw. (Family – Athyriaceae) is one such fern which is considered as one of the most commonly consumed edible ferns throughout the world.

Though there are some literatures on the ethnobotanical and ethnomedicinal studies of D. esculentum, the epidemiological studies of this fern have not yet been attempted. The studies done so far on this fern were mainly concerned with its beneficial effects either in vitro or in vivo in small laboratory animals. Very few researchers have focused on its health impacts. Most of the studies on this fern have been conducted to assess the antioxidant, antimicrobial, antitumor or other beneficial activities (Nanasombat & Teckchuen, 2009; Tongco et al., 2014; Kaushik et al., 2012; Seal, 2012) but very few studies have been performed so far to determine the possible pharmacological and toxicological impacts of this fern on human and animal health. In a nut shell, no comprehensive review of this plant has been reported to date which demonstrates all the bioactivities of this plant. Therefore, the overall aim of the present review is to elucidate the potential therapeutic prospects as well as health deteriorating properties of D. esculentum taking consideration on the latest and updated information on this plant, and thereby to advance the existing knowledge of this fern as food and medicine in relation to human health.

Brief morphological description

D. esculentum is an edible fern, pantropical in distribution and occurs widely and commonly throughout India, China, Cambodia, Laos, Thailand, Vietnam and Malaysia. It grows in gregarious colonies in open marshy areas, stream banks and canals from sea level to 2,300 m. The rhizome is erect, often forming a slender leaning black trunk to 1 m tall, scaly at the apex. Scales are 1 cm long, dark brown, margins finely toothed, apex long-acuminate. Fronds are 1–2 m long, 0.5–1 m wide, erect to arcuate. Stipe is black and scaly at the base, paler above. Lamina is 2–3-pinnate, 0.5–1.5 m long, 0.5–1 m wide, dark green. Secondary pinnae variable in size, commonly 5–8 cm long, 1.5–2.5 cm wide, margins very shallowly lobed, lobes are toothed, basal lobes longer than the rest, glabrous beneath, veins are simple or forked, lowest 3–5 pairs of adjacent vein groups anastomosing. Sori spreading along most veins; indusium thin, dark brown, margins becoming uneven with age (Roy, 2017).

Taxonomic classification

Kingdom: Plantae

Division: Pteridophyta

Class: Polypodiopsida

Order: Polypodiales

Family: Athyriaceae

Genus: Diplazium

Species: D. esculentum

Figure 1.

Uses of D. esculentum as food

Diplazium esculentum is one of the most common varieties and the most commonly consumed fern throughout Asia and Oceania. In India, young fronds of D. esculentum are popularly known as lingra in Northern India, rukja and lochanch in North Eastern India and dheki sak in West Bengal, India. The newly emerging coiled fronds are consumed after cooking as a seasonal vegetable during monsoon season which continues for almost five months. The frond of this fern is generally cooked in oil or butter; using them in a vegetable curry is less preferred (Roy et al., 2013a). In the northeastern India, especially in Sikkim, and in the central and north-western Himalayan states of India (Himachal Pradesh and Uttarakhand), the local folk relish both vegetables and pickles from D. esculentum. Natives consider these recipes effective both to counteract constipation and as an appetizer, especially as a pickle (FAO, 2010). Study conducted in the villages of the Parvati valley, Himachal, India revealed that out of the 50 consumed wild edibles, D. esculentum is used as a vegetable/pickle by an average of 66% of the inhabitants (Kala, 2005). In Malaysia, this plant is eaten as ‘ulam’ or green edible leaves, usually consumed with hot sauce. This practice of eating ‘ulam’ with sauce is also known as ‘krawoo’ (Rahmat et al., 2003).

Ethnomedicinal uses

The Apatani tribe of Arunachal Pradesh, India uses the frond of Diplazium esculentum plant as medicine for constipation (Kala, 2005). It has been shown that the local inhabitants of Similipal Biosphere Reserve, Orissa, India used to take honey with decoction of boiled water extract of D. esculentum in empty stomach twice a day for 15 days to cure spermatorrhea (Rout et al., 2009). The natives of Adi tribe of Dehang-Debang Biosphere Reserve of Arunachal Pradesh, India use the boiled young fronds of D. esculentum as vegetables with boiled rice for laxative purpose (Kagyung et al., 2010). In the Kolli hills of Eastern Ghats, Tamil Nadu, India, the natives use handful of D. esculentum leaves to make juice and taken orally twice a day to get relief from cold and cough (Karthik et al., 2011). Moreover, the local people of this region use the frond parts of this plant as laxative and often used to treat colitis and constipation (Perumal, 2010). The local people of Manokwari, West Papua Province use this plant for wound healing and as an ailment of headache (Lense, 2011). In a Sudanese community in Indonesia, D. esculentum is used for the treatment of fever, dermatitis and measles (Roosita et al., 2008).

Pharmacological properties of D. esculentum

6.1. Phytochemical analysis of D. esculentum

D. esculentum is reported to possess a diverse group of phytochemicals, viz., alkaloids, anthraquinones, anthranol glycosides, cardiac glycosides, cyanidins, flavonoids, glucosides, leucoanthocyanins, phenolic compounds, phytosterols, saponins, steroids, tannins and terpenoids. (Das et al., 2013, Tongco et al., 2014; Akter et al., 2014). The bioactive compounds present in this fern are esculentic acid, 5-O-Methyleriodictyol 7-O-(4-O-D-xylosyl)-β-D-galactoside, pterosin B, ptaquiloside, lutein, phosphoric acid, phytol, 2,6,10-trimethyl,14-ethylene-14-pentadecene, hexadecanoic acid methyl ester, pentadecanoic acid, Stigmasta-5,22-dien-3-ol, acetate, (3beta), beta-ocimene, 1,2- Benzenedicarboxylic acid, BIS(2-Methylpropyl)ester, 1-Heneicosanol, 5,8,11,14-eicosatetraenoic acid, methyl ester (all Z), ergost-5-en-3-ol, (3beta) and stigmast-5-en-3-ol, (3beta). (Tandon et al., 1980; Srivastava et al., 1981; Gangwar, 2004; Somvanshi, 2006; Wali et al., 2016; Naik et al., 2020). The chemical structures of these bioactive principles are depicted in Figure 2.

Figure 2.
Figure 3.

6.2. Antioxidant and free radical scavenging activities of D. esculentum 

The in vitro total antioxidant activity evaluated by ABTS, FTC, TBA, FRAP and phosphomolybdenum methods exhibit high percentages of the total antioxidant activity in D. esculentum which contains high amount of flavonoid and phenolic compounds that confers moderately high DPPH radical scavenging activity as evident by its IC50 value (Roy et al., 2013a; Das et al., 2013, Tongco et al., 2014; Wali et al., 2016). Oxidative stress of the liver was estimated by assessing the antioxidant enzymes catalase and reduced glutathione in Wistar rats. It was observed that the treatment of the rats with hydroalcoholic extract of D. esculentum significantly reduced the level of lipid peroxidation. The level of the antioxidant enzymes, i.e., catalase and reduced glutathione was also decreased significantly in a dose-dependent manner, indicating potent antioxidant potential of D. esculentum (Junejo et al., 2018). The methanolic extract of D. esculentum also possesses scavenging activities against different reactive oxygen species (ROS) and reactive nitrogen species (RNS), including hydroxyl, superoxide, hydrogen peroxide, singlet oxygen, hypochlorous acid, nitric oxide and peroxynitrite. Moreover, the D. esculentum extract acted as an iron chelator and also possessed reducing power and lipid peroxidation inhibition property. Moreover, D. esculentum is reported to contain significant amount of flavonoids and Phenolic compounds. Both these classes of compounds have good antioxidant potential and their effects on human nutrition and health are considerable (Roy et al., 2013a). 

6.3. Antibacterial activity of D. esculentum

The aqueous extracts of rhizome and root of D. esculentum inhibite the bacterial growth, whereas, the leaf extract did not show any inhibition. The aqueous and alcoholic extracts of rhizome were found to be more effective than the antibiotic. The synergistic effect was observed when the root extract was applied with the antibiotic against Salmonella arizonae and Staphylococcus aureus. But, the leaf and root extracts did not show any inhibition against E.coli. (Amit et al., 2011). The chloroform extract of D. esculentum showed strong antimicrobial activity against Sarcina lutea, Salmonella typhimurium, Bacillus subtilis, Klebsiella pneumonia, Shigella boydii, Escherichia coli, Staphylococcus aureus and Vibrio cholera. The highest zone of inhibition for chloroform extract was observed against Sarcina lutea followed by Salmonella typhimurium. On the other hand, in case of the aqueous extract, the highest zone of inhibition was found in Samonella typhimuriun followed by Klebsiella pneumonia (Akter et al., 2014).

6.4. Antidiabetic activity of D. esculentum

The antidiabetic activity of D. esculentum was reported by Junejo et al. (2018). They showed that D. esculentum significant lowered the blood glucose level in streptozotocin (STZ) induced diabetic rats. A 45.6

Discussion

Phytochemicals are chemical compounds or chemical constituents formed in the plant's normal metabolic processes. The chemicals are often referred to as "secondary metabolites" of which there are several classes including alkaloids, steroids, terpenoids, catecholamines, tannins, saponins, anthraquinones, coumarins, fats, flavonoids, glycosides, gums, iridoids, mucilages etc. These naturally occurring phytochemicals are generally considered to be safe alternatives for synthetic drugs and found to be useful in the prevention of several diseases, and also have antimicrobial, antifungal, antiparasitic, antiviral, anti-allergic, antispasmodic, antihyperglycemic, anti-inflammatory, and immunomodulatory properties (Rabi & Bishayee, 2009; Wagner & Elmadfa, 2003; Sultana & Ata, 2008; Shah et al., 2009). The present study reviewed several promising pharmacological activities which are intrigued by extensive variety of potential phytoconstituents of D. esculentum.

One of the major groups of secondary metabolites present in D. esculentum is alkaloids which is reported to act on the nervous system as stimulators, exhibit acetylcholinesterase inhibition activity, enhance memory in animals and is also being investigated for the treatment of Alzheimer's disease (Zhang et al., 2002; Hirasawa et al., 2003, Ma & Gang, 2004). D. esculentum is also reported to possess flavonoids and Phenolic compounds. Among flavonoids, some exhibit neuroprotective activity against cytotoxic stress, suggesting their possible use in treatment of neurodegenerative diseases such as stroke and Alzheimer’s disease. The mechanism of action of flavonoids is through scavenging or chelation (Cook & Samman, 1996). Phenolic compounds are also very important plant constituents because their hydroxyl groups confer scavenging ability (Diplock, 1997).

D. esculentum is also investigated for potential bioactive principles among which esculentic acid and lutein are important. Esculentic acid is a triterpene which showed potent anti-inflammatory activity in mice. It is reported to inhibit pro-inflammatory cytokines like TNF-α and IL-6, inflammatory mediators viz., NO & PGE-2 in macrophages, and decrease the COX-2 protein expression in mice (Niu et al., 2014). On the other hand, lutein, an oxygenated carotenoid, acts as an antioxidant, protecting cells against the damaging effects of free radicals. It is hypothesized that they protect against visual disorders and cognition diseases, such as age-related macular degeneration (AMD), age-related cataract (ARC), cognition diseases, ischemic/hypoxia induced retinopathy, light damage of the retina, retinitis pigmentosa, retinal detachment, uveitis and diabetic retinopathy (Jia et al., 2017). Dietary odd-chain saturated fatty acids (OCFAs) like pentadecanoic acid and heptadecanoic acid are associated with lower risks of cardiometabolic diseases, and their higher dietary intake is associated with lower mortality (Venn-Watson et al., 2020). On the other hand, hexadecanoic acid methyl ester shows a variety of pharmacological activities viz., antioxidant, antifungal, hypocholesterolemic, antimicrobial, pesticide, and nematicide activities (Mustapha et al., 2016; Arora et al., 2017). Other beneficial bioactive constituents like 1-heneicosanol and β-ocimene possess antibacterial and antifungal, antitumor, and pest resistance activities, whereas, phytol possesses anxiolytic, metabolism-modulating, cytotoxic, antioxidant, autophagy- and apoptosis-inducing, antinociceptive, anti-inflammatory, immunomodulating, and antimicrobial effects (Arancibia et al., 2016; Russo & Marcu, 2017; Islam et al., 2018). 

Apart from these beneficial phytochemicals, D. esculentum possesses some toxic compounds as well, among which saponins and tannins are pharmacologically most important. Study revealed that both the crude and boiled D. esculentum possess hemolytic activity which is due to the presence of considerable amount of saponins in plant. Saponins have the capacity to destroy cell membrane, therefore may be related to the hemolytic potential. On the other hand, tannins inhibit protein availability through denaturation. Tannins are heat resistant compounds that can withstand high temperature during boiling. Thus, the toxic effects shown by D. esculentum could be attributed to tannins and other heat stable compounds (Roy et al., 2013b). Among the bioactive principles, ptaquilosides and pterosin B are the most prominent in this fern. D. esculentum collected from the high-altitude area of Harsil-Gangotri (Northern India) had 19 mg/kg Ptaquiloside (Somvanshi et al., 2006). Shade- and freeze dried samples of D. esculentum showed the presence of 10.94 to 16.36 mg/kg of pterosin B (Gangwar, 2004). During metabolism, ptaquiloside undergoes a series of reactions and produces a reactive aglycone dienone intermediate, the inactive pterosin B and DNA adducts. Ptaquiloside is activated at alkaline pH, which is considered as the reason for the location of tumors in the urinary bladder of ruminants and the ileum of rats (Smith et al., 1994).

Among other bioactive phytoconstituents, pthalic acid is the most important. Phthalic acid is already reported to present in considerable amount in D. esculentum. Phthalates are the diesters of phthalic acid which was reported to reduce the ovarian weight and increased uterine weight in female mice. In utero or lactational exposure of pthalates alters steroidogenic gene expression in the ovary, decreases estrogen synthesis, reduces ovarian weight, and reduces ovulation. Exposure of phthalates during fetal development altered follicular recruitment and development, eventually causing premature ovarian failure. Low molecular weight phthalates are also suspected of acting as hormones and cause infertility, overweight, and diabetes in men (Lyche, 2017; Barakat & Ko, 2018; Henkel, 2018).

One of the most important properties of D. esculentum investigated so far is the acetylcholinesterase inhibitory activity, which can explain the neuroimmune function of this plant. Acetylcholine (ACh) is a ubiquitous neurotransmitter and found even in the roundworm Caenorhabditis elegans, one of the simplest organisms with a nervous system (Rakowski et al., 2013; Kosinski & Zaremba, 2007). The wider significance of ACh is in understanding the biological effects of tested toxins and/or medical drugs: as any immunological effects of Acetylcholinesterase (AChE) inhibitors can involve both CNS and PNS, this has to be taken into consideration in interpreting any findings (Pohanka, 2014). The cholinergic system is tightly associated with the cholinergic anti-inflammatory pathway dominantly located in blood and mucosa. This pathway is a regulatory link between nerve terminations in blood and macrophages expressing the α7 nicotinic acetylcholine receptor (α7 nAChR) on their surface (Pohanka, 2012; Wessler & Kirkpatrick, 2008; Rosas-Ballina & Tracey, 2009). Discovery of the cholinergic anti-inflammatory pathway allows us to understand how the CNS is involved in the regulation of innate immunity (Pohanka, 2014). Acetylcholinesterase (AChE) bound on erythrocytes plays an important role in termination of cholinergic anti-inflammatory pathway activation (Pohanka, 2012; Silva-Herdade & Saldanha, 2013). The bioactive constituents like lutein and phytol, present in D. esculentum can inhibit AChE, and thus aid in the continued progression of the cholinergic anti-inflammatory pathway. The detailed mechanism of D. esculentum mediated regulation of the cholinergic anti-inflammatory pathway is illustrated in the Figure 3.

Figure - 3: The modulation of the cholinergic anti-inflammatory pathway via protection of ACh from splitting by cholinesterase and thus enhancing the pathway. Acetylcholine (ACh) is released by β2-adrenergic receptor T cells coupled with choline acetyltransferase (β2-AR T Cells + ChAT) following the stimulation of splenic nerve and subsequent release of norepinephrine, which binds β2-AR cells stimulating ACh release. At this point, the enzyme, acetylcholinesterase (AChE), which is bound to the erythrocytes, comes in to play and it cleaves the ACh molecule in to acetic acid and choline group, terminating the stimulation of the cholinergic anti-inflammatory pathway (Cuoco et al., 2016). The bioactive principles of D. esculentum (lutein, phytol, etc.) inhibit the AChE, and therefore, the circulating ACh molecules bind to macrophages via the α7nAChR activating IκB or JAK/STAT pathway to inactivate the NF-κB-mediated transcription of pro-inflammatory cytokines, such as IL-1, IL-6, TNF-α and CRP.

Conclusion and future perspectives

Diplazium esculentum have survived from the Paleozoic times and have adapted with many more various changes of environment than the other primitive vascular plants (Wallace et al., 1991). Therefore, this plant is expected to have many useful phytochemicals than other plants. It is interesting to note that not all the ferns are edible, only a few of them are used as food throughout the world, and D. esculentum is one of them. It is the most commonly consumed fern in the world. The fern stems, rhizomes, leaves, young fronds and shoots, and sometimes the whole plants are used for food (Liu et al., 2012). In recent years, more and more researches have reported the food and ethnomedicinal uses of this fern in different parts of the world but very few studies have been conducted so far to assess the pharmacological or toxicological impact of this plant on human health. This plant is enormous source of a wide range of compounds having diverse pharmacological and medicinal properties. The present review is the first attempt to summarize all the available information regarding the chemical profiles and pharmacological properties of this edible plant which may serve as the baseline data to do extensive studies towards the discovery of more potent compounds and further investigations for their biological activities. Therefore, further research should be carried out on D. esculentum to uncover the unidentified compounds, their functions including synergistic effects and mechanisms of action. Experimental studies including clinical trials are highly required to establish disease-specific optimal dosing and the optimal method to deliver the therapeutic agent. 

References

Clearly Auctoresonline and particularly Psychology and Mental Health Care Journal is dedicated to improving health care services for individuals and populations. The editorial boards' ability to efficiently recognize and share the global importance of health literacy with a variety of stakeholders. Auctoresonline publishing platform can be used to facilitate of optimal client-based services and should be added to health care professionals' repertoire of evidence-based health care resources.

img

Virginia E. Koenig

Journal of Clinical Cardiology and Cardiovascular Intervention The submission and review process was adequate. However I think that the publication total value should have been enlightened in early fases. Thank you for all.

img

Delcio G Silva Junior

Journal of Women Health Care and Issues By the present mail, I want to say thank to you and tour colleagues for facilitating my published article. Specially thank you for the peer review process, support from the editorial office. I appreciate positively the quality of your journal.

img

Ziemlé Clément Méda

Journal of Clinical Research and Reports I would be very delighted to submit my testimonial regarding the reviewer board and the editorial office. The reviewer board were accurate and helpful regarding any modifications for my manuscript. And the editorial office were very helpful and supportive in contacting and monitoring with any update and offering help. It was my pleasure to contribute with your promising Journal and I am looking forward for more collaboration.

img

Mina Sherif Soliman Georgy

We would like to thank the Journal of Thoracic Disease and Cardiothoracic Surgery because of the services they provided us for our articles. The peer-review process was done in a very excellent time manner, and the opinions of the reviewers helped us to improve our manuscript further. The editorial office had an outstanding correspondence with us and guided us in many ways. During a hard time of the pandemic that is affecting every one of us tremendously, the editorial office helped us make everything easier for publishing scientific work. Hope for a more scientific relationship with your Journal.

img

Layla Shojaie

The peer-review process which consisted high quality queries on the paper. I did answer six reviewers’ questions and comments before the paper was accepted. The support from the editorial office is excellent.

img

Sing-yung Wu

Journal of Neuroscience and Neurological Surgery. I had the experience of publishing a research article recently. The whole process was simple from submission to publication. The reviewers made specific and valuable recommendations and corrections that improved the quality of my publication. I strongly recommend this Journal.

img

Orlando Villarreal

Dr. Katarzyna Byczkowska My testimonial covering: "The peer review process is quick and effective. The support from the editorial office is very professional and friendly. Quality of the Clinical Cardiology and Cardiovascular Interventions is scientific and publishes ground-breaking research on cardiology that is useful for other professionals in the field.

img

Katarzyna Byczkowska

Thank you most sincerely, with regard to the support you have given in relation to the reviewing process and the processing of my article entitled "Large Cell Neuroendocrine Carcinoma of The Prostate Gland: A Review and Update" for publication in your esteemed Journal, Journal of Cancer Research and Cellular Therapeutics". The editorial team has been very supportive.

img

Anthony Kodzo-Grey Venyo

Testimony of Journal of Clinical Otorhinolaryngology: work with your Reviews has been a educational and constructive experience. The editorial office were very helpful and supportive. It was a pleasure to contribute to your Journal.

img

Pedro Marques Gomes

Dr. Bernard Terkimbi Utoo, I am happy to publish my scientific work in Journal of Women Health Care and Issues (JWHCI). The manuscript submission was seamless and peer review process was top notch. I was amazed that 4 reviewers worked on the manuscript which made it a highly technical, standard and excellent quality paper. I appreciate the format and consideration for the APC as well as the speed of publication. It is my pleasure to continue with this scientific relationship with the esteem JWHCI.

img

Bernard Terkimbi Utoo

This is an acknowledgment for peer reviewers, editorial board of Journal of Clinical Research and Reports. They show a lot of consideration for us as publishers for our research article “Evaluation of the different factors associated with side effects of COVID-19 vaccination on medical students, Mutah university, Al-Karak, Jordan”, in a very professional and easy way. This journal is one of outstanding medical journal.

img

Prof Sherif W Mansour

Dear Hao Jiang, to Journal of Nutrition and Food Processing We greatly appreciate the efficient, professional and rapid processing of our paper by your team. If there is anything else we should do, please do not hesitate to let us know. On behalf of my co-authors, we would like to express our great appreciation to editor and reviewers.

img

Hao Jiang

As an author who has recently published in the journal "Brain and Neurological Disorders". I am delighted to provide a testimonial on the peer review process, editorial office support, and the overall quality of the journal. The peer review process at Brain and Neurological Disorders is rigorous and meticulous, ensuring that only high-quality, evidence-based research is published. The reviewers are experts in their fields, and their comments and suggestions were constructive and helped improve the quality of my manuscript. The review process was timely and efficient, with clear communication from the editorial office at each stage. The support from the editorial office was exceptional throughout the entire process. The editorial staff was responsive, professional, and always willing to help. They provided valuable guidance on formatting, structure, and ethical considerations, making the submission process seamless. Moreover, they kept me informed about the status of my manuscript and provided timely updates, which made the process less stressful. The journal Brain and Neurological Disorders is of the highest quality, with a strong focus on publishing cutting-edge research in the field of neurology. The articles published in this journal are well-researched, rigorously peer-reviewed, and written by experts in the field. The journal maintains high standards, ensuring that readers are provided with the most up-to-date and reliable information on brain and neurological disorders. In conclusion, I had a wonderful experience publishing in Brain and Neurological Disorders. The peer review process was thorough, the editorial office provided exceptional support, and the journal's quality is second to none. I would highly recommend this journal to any researcher working in the field of neurology and brain disorders.

img

Dr Shiming Tang

Dear Agrippa Hilda, Journal of Neuroscience and Neurological Surgery, Editorial Coordinator, I trust this message finds you well. I want to extend my appreciation for considering my article for publication in your esteemed journal. I am pleased to provide a testimonial regarding the peer review process and the support received from your editorial office. The peer review process for my paper was carried out in a highly professional and thorough manner. The feedback and comments provided by the authors were constructive and very useful in improving the quality of the manuscript. This rigorous assessment process undoubtedly contributes to the high standards maintained by your journal.

img

Raed Mualem

International Journal of Clinical Case Reports and Reviews. I strongly recommend to consider submitting your work to this high-quality journal. The support and availability of the Editorial staff is outstanding and the review process was both efficient and rigorous.

img

Andreas Filippaios

Thank you very much for publishing my Research Article titled “Comparing Treatment Outcome Of Allergic Rhinitis Patients After Using Fluticasone Nasal Spray And Nasal Douching" in the Journal of Clinical Otorhinolaryngology. As Medical Professionals we are immensely benefited from study of various informative Articles and Papers published in this high quality Journal. I look forward to enriching my knowledge by regular study of the Journal and contribute my future work in the field of ENT through the Journal for use by the medical fraternity. The support from the Editorial office was excellent and very prompt. I also welcome the comments received from the readers of my Research Article.

img

Dr Suramya Dhamija

Dear Erica Kelsey, Editorial Coordinator of Cancer Research and Cellular Therapeutics Our team is very satisfied with the processing of our paper by your journal. That was fast, efficient, rigorous, but without unnecessary complications. We appreciated the very short time between the submission of the paper and its publication on line on your site.

img

Bruno Chauffert

I am very glad to say that the peer review process is very successful and fast and support from the Editorial Office. Therefore, I would like to continue our scientific relationship for a long time. And I especially thank you for your kindly attention towards my article. Have a good day!

img

Baheci Selen

"We recently published an article entitled “Influence of beta-Cyclodextrins upon the Degradation of Carbofuran Derivatives under Alkaline Conditions" in the Journal of “Pesticides and Biofertilizers” to show that the cyclodextrins protect the carbamates increasing their half-life time in the presence of basic conditions This will be very helpful to understand carbofuran behaviour in the analytical, agro-environmental and food areas. We greatly appreciated the interaction with the editor and the editorial team; we were particularly well accompanied during the course of the revision process, since all various steps towards publication were short and without delay".

img

Jesus Simal-Gandara

I would like to express my gratitude towards you process of article review and submission. I found this to be very fair and expedient. Your follow up has been excellent. I have many publications in national and international journal and your process has been one of the best so far. Keep up the great work.

img

Douglas Miyazaki

We are grateful for this opportunity to provide a glowing recommendation to the Journal of Psychiatry and Psychotherapy. We found that the editorial team were very supportive, helpful, kept us abreast of timelines and over all very professional in nature. The peer review process was rigorous, efficient and constructive that really enhanced our article submission. The experience with this journal remains one of our best ever and we look forward to providing future submissions in the near future.

img

Dr Griffith

I am very pleased to serve as EBM of the journal, I hope many years of my experience in stem cells can help the journal from one way or another. As we know, stem cells hold great potential for regenerative medicine, which are mostly used to promote the repair response of diseased, dysfunctional or injured tissue using stem cells or their derivatives. I think Stem Cell Research and Therapeutics International is a great platform to publish and share the understanding towards the biology and translational or clinical application of stem cells.

img

Dr Tong Ming Liu

I would like to give my testimony in the support I have got by the peer review process and to support the editorial office where they were of asset to support young author like me to be encouraged to publish their work in your respected journal and globalize and share knowledge across the globe. I really give my great gratitude to your journal and the peer review including the editorial office.

img

Husain Taha Radhi

I am delighted to publish our manuscript entitled "A Perspective on Cocaine Induced Stroke - Its Mechanisms and Management" in the Journal of Neuroscience and Neurological Surgery. The peer review process, support from the editorial office, and quality of the journal are excellent. The manuscripts published are of high quality and of excellent scientific value. I recommend this journal very much to colleagues.

img

S Munshi

Dr.Tania Muñoz, My experience as researcher and author of a review article in The Journal Clinical Cardiology and Interventions has been very enriching and stimulating. The editorial team is excellent, performs its work with absolute responsibility and delivery. They are proactive, dynamic and receptive to all proposals. Supporting at all times the vast universe of authors who choose them as an option for publication. The team of review specialists, members of the editorial board, are brilliant professionals, with remarkable performance in medical research and scientific methodology. Together they form a frontline team that consolidates the JCCI as a magnificent option for the publication and review of high-level medical articles and broad collective interest. I am honored to be able to share my review article and open to receive all your comments.

img

Tania Munoz

“The peer review process of JPMHC is quick and effective. Authors are benefited by good and professional reviewers with huge experience in the field of psychology and mental health. The support from the editorial office is very professional. People to contact to are friendly and happy to help and assist any query authors might have. Quality of the Journal is scientific and publishes ground-breaking research on mental health that is useful for other professionals in the field”.

img

George Varvatsoulias

Dear editorial department: On behalf of our team, I hereby certify the reliability and superiority of the International Journal of Clinical Case Reports and Reviews in the peer review process, editorial support, and journal quality. Firstly, the peer review process of the International Journal of Clinical Case Reports and Reviews is rigorous, fair, transparent, fast, and of high quality. The editorial department invites experts from relevant fields as anonymous reviewers to review all submitted manuscripts. These experts have rich academic backgrounds and experience, and can accurately evaluate the academic quality, originality, and suitability of manuscripts. The editorial department is committed to ensuring the rigor of the peer review process, while also making every effort to ensure a fast review cycle to meet the needs of authors and the academic community. Secondly, the editorial team of the International Journal of Clinical Case Reports and Reviews is composed of a group of senior scholars and professionals with rich experience and professional knowledge in related fields. The editorial department is committed to assisting authors in improving their manuscripts, ensuring their academic accuracy, clarity, and completeness. Editors actively collaborate with authors, providing useful suggestions and feedback to promote the improvement and development of the manuscript. We believe that the support of the editorial department is one of the key factors in ensuring the quality of the journal. Finally, the International Journal of Clinical Case Reports and Reviews is renowned for its high- quality articles and strict academic standards. The editorial department is committed to publishing innovative and academically valuable research results to promote the development and progress of related fields. The International Journal of Clinical Case Reports and Reviews is reasonably priced and ensures excellent service and quality ratio, allowing authors to obtain high-level academic publishing opportunities in an affordable manner. I hereby solemnly declare that the International Journal of Clinical Case Reports and Reviews has a high level of credibility and superiority in terms of peer review process, editorial support, reasonable fees, and journal quality. Sincerely, Rui Tao.

img

Rui Tao

Clinical Cardiology and Cardiovascular Interventions I testity the covering of the peer review process, support from the editorial office, and quality of the journal.

img

Khurram Arshad

Clinical Cardiology and Cardiovascular Interventions, we deeply appreciate the interest shown in our work and its publication. It has been a true pleasure to collaborate with you. The peer review process, as well as the support provided by the editorial office, have been exceptional, and the quality of the journal is very high, which was a determining factor in our decision to publish with you.

img

Gomez Barriga Maria Dolores

The peer reviewers process is quick and effective, the supports from editorial office is excellent, the quality of journal is high. I would like to collabroate with Internatioanl journal of Clinical Case Reports and Reviews journal clinically in the future time.

img

Lin Shaw Chin

Clinical Cardiology and Cardiovascular Interventions, I would like to express my sincerest gratitude for the trust placed in our team for the publication in your journal. It has been a true pleasure to collaborate with you on this project. I am pleased to inform you that both the peer review process and the attention from the editorial coordination have been excellent. Your team has worked with dedication and professionalism to ensure that your publication meets the highest standards of quality. We are confident that this collaboration will result in mutual success, and we are eager to see the fruits of this shared effort.

img

Maria Dolores Gomez Barriga

Dear Dr. Jessica Magne, Editorial Coordinator 0f Clinical Cardiology and Cardiovascular Interventions, I hope this message finds you well. I want to express my utmost gratitude for your excellent work and for the dedication and speed in the publication process of my article titled "Navigating Innovation: Qualitative Insights on Using Technology for Health Education in Acute Coronary Syndrome Patients." I am very satisfied with the peer review process, the support from the editorial office, and the quality of the journal. I hope we can maintain our scientific relationship in the long term.

img

Dr Maria Dolores Gomez Barriga

Dear Monica Gissare, - Editorial Coordinator of Nutrition and Food Processing. ¨My testimony with you is truly professional, with a positive response regarding the follow-up of the article and its review, you took into account my qualities and the importance of the topic¨.

img

Dr Maria Regina Penchyna Nieto

Dear Dr. Jessica Magne, Editorial Coordinator 0f Clinical Cardiology and Cardiovascular Interventions, The review process for the article “The Handling of Anti-aggregants and Anticoagulants in the Oncologic Heart Patient Submitted to Surgery” was extremely rigorous and detailed. From the initial submission to the final acceptance, the editorial team at the “Journal of Clinical Cardiology and Cardiovascular Interventions” demonstrated a high level of professionalism and dedication. The reviewers provided constructive and detailed feedback, which was essential for improving the quality of our work. Communication was always clear and efficient, ensuring that all our questions were promptly addressed. The quality of the “Journal of Clinical Cardiology and Cardiovascular Interventions” is undeniable. It is a peer-reviewed, open-access publication dedicated exclusively to disseminating high-quality research in the field of clinical cardiology and cardiovascular interventions. The journal's impact factor is currently under evaluation, and it is indexed in reputable databases, which further reinforces its credibility and relevance in the scientific field. I highly recommend this journal to researchers looking for a reputable platform to publish their studies.

img

Dr Marcelo Flavio Gomes Jardim Filho

Dear Editorial Coordinator of the Journal of Nutrition and Food Processing! "I would like to thank the Journal of Nutrition and Food Processing for including and publishing my article. The peer review process was very quick, movement and precise. The Editorial Board has done an extremely conscientious job with much help, valuable comments and advices. I find the journal very valuable from a professional point of view, thank you very much for allowing me to be part of it and I would like to participate in the future!”

img

Zsuzsanna Bene

Dealing with The Journal of Neurology and Neurological Surgery was very smooth and comprehensive. The office staff took time to address my needs and the response from editors and the office was prompt and fair. I certainly hope to publish with this journal again.Their professionalism is apparent and more than satisfactory. Susan Weiner

img

Dr Susan Weiner

My Testimonial Covering as fellowing: Lin-Show Chin. The peer reviewers process is quick and effective, the supports from editorial office is excellent, the quality of journal is high. I would like to collabroate with Internatioanl journal of Clinical Case Reports and Reviews.

img

Lin-Show Chin

My experience publishing in Psychology and Mental Health Care was exceptional. The peer review process was rigorous and constructive, with reviewers providing valuable insights that helped enhance the quality of our work. The editorial team was highly supportive and responsive, making the submission process smooth and efficient. The journal's commitment to high standards and academic rigor makes it a respected platform for quality research. I am grateful for the opportunity to publish in such a reputable journal.

img

Sonila Qirko

My experience publishing in International Journal of Clinical Case Reports and Reviews was exceptional. I Come forth to Provide a Testimonial Covering the Peer Review Process and the editorial office for the Professional and Impartial Evaluation of the Manuscript.

img

Luiz Sellmann