Endothelial Dysfunction in Adult Patients of Sickle Cell Disease

Research Article | DOI: https://doi.org/10.31579/2578-8868/272

Endothelial Dysfunction in Adult Patients of Sickle Cell Disease

  • E Khandelwal 1*
  • S Tripathi 2
  • A Ingle 3
  • P Wasnik 4
  • R Nanda 5

1 Additional Professor, Department of Physiology, AIIMS Raipur, Chhattisgarh, India, 492099.

2 Professor, Department of Physiology,Pt. J N M Medical College, Raipur, Chhattisgarh, India, 492001.

3 Professor, Department of Physiology, AIIMS Raipur,Chhattisgarh, India, 492099.

4 Additional Professor, Department of Medicine, AIIMS Raipur, Chhattisgarh, India, 492099.

5 Professor, Department of Biochemistry, AIIMS Raipur, Chhattisgarh, India, 492099.

*Corresponding Author: E Khandelwal, Additional Professor Room No 3116, 3rd Floor, Medical college building, Department of Physiology, AIIMS Raipur, 492099 Chhattisgarh, India.

Citation: E Khandelwal, S Tripathi, A Ingle, P Wasnik, R Nanda (2023), Endothelial Dysfunction in Adult Patients of Sickle Cell Disease, J. Neuroscience and Neurological Surgery. 13(3); DOI:10.31579/2578-8868/272

Copyright: © 2023, E Khandelwal. This is an open-access article distributed under the terms of The Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited

Received: 19 June 2023 | Accepted: 17 July 2023 | Published: 28 July 2023

Keywords: sickle cell disease ; red blood cells

Abstract

Sickle cell disease is one of the most common hemoglobinopathy worldwide. It is an autosomal recessive genetic disorder caused by replacement of adenine to thymine nucleotide in the beta chain of hemoglobin results in replacement of valine for glutamic acid at 6th position. This substitution results in formation of sickle hemoglobin (HbS) which in turn leads to a reduced lifespan of red blood cells (RBC). In hypoxic conditions, HbS has a tendency to aggregate and form fibrillar structure called tactoid within the red cells 

Introduction

Sickle cell disease is one of the most common hemoglobinopathy worldwide. It is an autosomal recessive genetic disorder caused by replacement of adenine to thymine nucleotide in the beta chain of hemoglobin results in replacement of valine for glutamic acid at 6th position. This substitution results in formation of sickle hemoglobin (HbS) which in turn leads to a reduced lifespan of red blood cells (RBC). In hypoxic conditions, HbS has a tendency to aggregate and form fibrillar structure called tactoid within the red cells [1]. RBC’s gets distorted and attains crescent moon shape, leading to increase in hemolysis and vaso-occlusive crises (VOC).  VOC is characterized by episodes of acute painful crisis and multi-organ dysfunctions [2,3,4] in SCD.  There are many factors triggering VOC like: increase viscosity of blood, dehydration of sickled red cells, anchoring of sickled red cells to vascular endothelium and other vascular inflammatory changes [5]. Though the pathophysiology6,7of VOC is centered on deoxy sickle hemoglobin, however the role of endothelial dysfunction (ED) is also very crucial but is often neglected in evaluation of SCD severity. Endothelial dysfunction leads to impaired synthesis of nitric oxide (NO) effecting the vascular vasodilatation which impairs the local blood flow [8] and reduce local tissue perfusion. It also affects the circulation time of sickled red cells in the body and increases the risk of VOC [9]. ED is one the major cause of morbidity & mortality in SCD patients Estimation of endothelial functions and its correlation with vascular biomarkers [10] can be helpful in early risk detection of vaso-occlusive crises in these patients and can potentially streamline the management the VOC and improve their quality of life[11,12]. SCD is an important public health problem which affects millions of people globally causing high treatment burden on health care system. It is very common in the Indian subcontinent[13,14]. Chattisgarh State which lies in the sickling belt of, India has a high prevalence of the disease [15]. Very few studies have been undertaken to understand the correlation of endothelial dysfunction and vaso-occlusive crises in the affected population. The purpose of the present study was to evaluate the ED using reactive hyperemia by photoplethysmography (PPG) to detect impending risk of VOC in SCD and to reduce the complications associated with it.

Aim and Objective: Aim of the present study was to estimate endothelial dysfunction by reactive hyperemia in SCD patients with risk of impending VOC. To study correlation of blood biochemical markers like Nitric Oxide (NO), Endothelin 1 (Et) and Vascular endothelial growth factor (VEGF) with the PTT recovery parameters of reactive hyperemia in SCD patients and controls.

Methodology: This was a cross sectional study with total sample size (n) 60.  After obtaining Institutional ethical clearance (no:AIIMSRPR/IEC/2018/128) and informed written consent participants divided into two groups. Group 1 comprising of 30 Young Adult SCD diagnosed patients of age group 18 to 40 year recruited from sickle cell OPD of AIIMS Raipur, India. Group 2 as control group comprising of 30 of healthy age-matched subjects recruited from general population. Patients having history of VOC in past six months, smoking, alcohol intake, diabetes mellitus, essential hypertension, vascular disorder, psychiatric problems and seizures were excluded. 

Each patient and control were explained in detail about the procedure of assessing endothelial function by PPG during reactive hyperemia. They were asked to abstain from any stimulant like cigarette, alcohol, tea, caffeine intake for 12 hours before test. After patient recruitment recordings were conducted at Autonomic & Vascular testing clinic at AIIMS Raipur. The room temperature was maintained between 25° - 27°C in noise free condition. All the test recordings of patients and controls were performed around 10:00 am.

Each patient and controls electrocardiogram (ECG) was monitored using a lead II for 5 minutes to estimate Heart rate variability (HRV). After 5 mins of supine rest PPG [16] signals were recorded utilizing either right middle or index finger as a baseline measurement. This was followed by induction of reactive hyperemia (RH). It is a standard procedure used for assessment endothelial function. The blood pressure cuff was tied on right forearm 6 cm above the cubital fossa. After baseline recording of PPG and ECG for 5 mins, pressure in the BP cuff was raised to supra systolic (220mm Hg) to induce ischemia and the pressure was maintained for 5 minutes (or till patients tolerate). Recovery recording of PPG parameters and ECG was done for further 5 minutes after pressure was released and completing reactive hyperemia protocol [17] shown in Figure 1.  Parameters acquired are Amplitude of wave-form, Peak to Peak interval (PPI), Pulse Transit Time (PTT), Crest time (CT), Slope of wave-form. HRV and PPG were recorded on 8-channel digital physiograph (LabChart, AD Instruments, Bella Vista, Australia).

Bio chemical markers: 6 ml of blood sample was collected from patients and controls for assessment of Nitric Oxide, Vascular endothelial growth factor and Endothelin-1 by Sandwich ELISA technique at department of biochemistry, AIIMS Raipur. Other routine blood investigation was carried for all patients and controls.

Data Analysis: Baseline ECG and PPG were recorded for 5 minutes to obtain control data. PPG pulse parameters viz: amplitude; height of the systolic peak point from the foot; slope, maximum of the first derivative of upstroke; systolic peak to peak interval, the time difference between the successive systolic peak were obtained by beat-to-beat changes PPG and ECG. Additionally, the beat-to-beat changes of Pulse Transit Time was computed as the time delay between R wave peak of ECG and onset of corresponding PPG pulse [18].

Data obtained were initially checked for distribution. Parametric test was applied for Gaussian distribution and appropriate non parametric test was applied for non-Gaussian distribution. 

The following tests were used as appropriate for the data: Paired ‘t’ test, Mann Whitney test, Friedman and Wilcoxon signed ranks test, Spearman's correlation. Level of significant was set to p<0>

Result

Total 42 SCD patients were recruited from sickle cell OPD out of which 30 patients (mean age 24.53 ± 4.96 years) fulfilled the inclusion and exclusion criteria and 30 healthy controls (mean age 30 ± 3.8 years) were recruited from general population. Demographic profile and baseline physiological parameters are presented in Table 1. SCD patients had significantly lower height and body weight than controls. Patients had significantly higher resting heart rate but comparable blood pressure. HRV, the basal cardiac autonomic tone parameters were compared between SCD patients and Controls and shown in Table 2.  HRV parameters for parasympathetic and sympathetic responses showed that SCD patients had significant lower cardiac autonomic tone as compared to controls. Time domain parameters of HRV were significantly lower in the SCD patients as compared to control subjects. Total power is also significantly reduced in patient group. Table 3 lists the baseline PPG parameters of the SCD patients and Controls, All the PPG parameters were significantly higher in controls than patients except slope.  Table 4 compares the recovery response of reactive hyperemia for the PPG parameters in SCD Patients and controls. PTT recovery parameters were significantly different in patients than controls after reactive hyperaemia. Table 5 showed baseline biochemical markers of Endothelial Functions. All the markers NO, Et1 and VEGF were significantly higher in patients than controls. Correlation of biomarkers and PTT was analyzed in SCD patients and controls. We found that all the biomarkers of endothelium functions are negatively correlated with Pulse Transit Time in SCD patients. NO is significantly negatively correlated with PTT in Patients (r=-.378*, p=.039*). Correlation analysis of biomarkers and PTT in controls showed that all the biomarkers of endothelium functions are positively correlated with PTT. VEGF (r=.462, p=.04) & NO (r=.485, p= .03) is significantly positively correlated with PTT in Controls.

 Values shown are mean ±S.D., p value* ≤ 0.05 (significant).

Table 1: Demographic Profile and Baseline physiological parameters

Values are shown in Median (1 quartile – 3 quartile), p value* ≤ 0.05 (significant).

SDNN- standard deviation of the R-R intervals; RMSSD- root mean square of successive RR Intervals; NN50- number of RR intervals equal to or greater than 50 milliseconds; pNN50- percentage of NN50; SDSD-Standard deviation of differences between adjacent RR intervals. ab- absolute unit for total power of entire frequency spectrum of heart rate variability.

Table 2: Comparison of HRV parameters in patients and controls

The values are presented as Median (1st quartile- 3rd quartile), p value* ≤ 0.05 (significant). 

Table 3: Baseline Photoplethysmography (PPG) parameters in patients and controls

Values shown are mean ±S.D., a = p values are significant (p<0>

Table 4: comparison of recovery response of reactive hyperemia for the Pulse Transit Time (PTT) in SCD Patients and controls.

The values are presented as Median (1st quartile- 3rd quartile), p value* ≤ 0.05 (significant).

Table 5: Baseline Biochemical Markers of Endothelial Functions

Discussion and Conclusion

The baseline heart rate was significant higher in-patient group as compared to controls suggestive of increased sympathetic neural drive to heart. Blood pressure is comparable in both the groups. Other demographic parameters like height and weight were significantly decreased in patients as compared to the control suggestive of compromised growth in sickle cell patients [19].

HRV findings in table 2 showed that the parasympathetic time domain parameters were significantly lower (RMSSD, NN50, pnn50, SDSD) in the patient group. Lower resting parasympathetic tone has been postulated to be an important feature in the pathophysiology of cardiac autonomic dysfunction and also it has been suggested that the decrease in absolute power of the LF component is associated with sympathetic activation which may explain the increased resting heart rate in patients [20]. Baseline PPG parameters are significantly decreased in SCD patients than controls suggestive of compromised neurovascular tone. To compare the 

endothelial functions in both the groups the change of PPG recovery response of vasodilation during RH has been attempted in the present study. PTT was significantly lower patients as compared to controls indicates some kind of increased tone/ Stiffer blood vessels. 

During reactive hyperemia, vasodilation and decrease in vascular resistance happens due to accumulation of local metabolites and Endothelial NO. This was depicted by the significant increase in the amplitude in the control group, then in the patient group. PTT is inversely proportional vasomotor tone, longer PTT in controls as compared to patients immediately after the release of occlusion strongly suggest intact endothelial function in controls due to release of Endothelial NO. Our study findings are similar to Maltz and Budinger [21], Itzhaki et al  [22] suggested that peripheral arterial tone assessed by PTT can be used as a noninvasive method of assessing endothelial function in health and disease. In patients ET 1 is raised due to vascular dysfunction by sickle cells. This increased level leads to vasoconstriction everywhere in circulation and also has effect on sympathetic nervous system. Correlation analysis showed that patients are negatively correlated with biomarkers specifically NO. This raised ET1 may lead to increase in NO as compensatory mechanism of vasoconstriction [9]. VEGF is one of the biomarkers depicting vascular injury and hypoxia was significantly raised in patient group. VEGF express vascular adhesion molecules and hence facilitates adhesion of sickled red cells. It also helps in vascular remodeling and growth of collateral vessels [9]. Interesting result of our study was the reduced vascular response to RH in patients of SCD has been objectively assed by PPG responses. This preliminary study suggests that together parameters of PPG and HRV can be used to quantify endothelial function objectively to detect the deficits of vascular response in SCD. This study helps us to gain useful research insight in field of pathophysiology of SCD for medical field and its applications which is lacking in our current scenario and can be extended in future in larger scale.

Acknowledgements: Department of Sickle Cell Clinic, AIIMS for referring patients.

Sources of funding: AIIMS Raipur

Conflicts of interest: The authors declare no conflicts of interest.

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