Epidemiology and Pathophysiology of Diabetes Mellitus

Review Article

Epidemiology and Pathophysiology of Diabetes Mellitus

  • Mir Saleem 1*
  • Loraine Sanchez 1

*Corresponding Author: Mir Saleem, BMHS-5250 Systems Neuroscience

Citation: Mir Saleem, Loraine Sanchez (2020). Epidemiology and Pathophysiology of Diabetes Mellitus 3(1); Doi: 10.31579/ 2641-8975 /015

Copyright: © 2019 Mir Saleem, 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: 03 December 2019 | Accepted: 24 December 2019 | Published: 31 December 2019

Keywords: diabetes, gender differences, pathophysiology, obesity

Abstract

Diabetes mellitus (DM) is a metabolic disorder affecting the insulin production and resistance of the human body. Type I-DM commonly affects children and has a high genetic disposition. Type II-DM develops more commonly in adults and is heavily related to the overall health of the person. Risk factors for diabetes include obesity, stress, and environmental factors such as arsenic, mercury, BPA, and phthalates. Other factors such as gender and race are out of one’s control. 10.6% of women and 13.6% of men in the US suffer from diabetes. Men are more likely to develop diabetes from weight gain, while women are more likely to develop it due to stress. The cause of diabetes depends on the type, there are genetic alleles for human leukocyte antigen (HLA) known to be involved in causing diabetes. These include HLA-DR3-DQ2, HLA-DR4, and DQ8. Ultimately all forms of diabetes result from either the decreased production of the anabolic insulin hormone, or from increased insulin resistance.

I. Introduction

Diabetes is an epidemic disease becoming increasingly common across the world. Diabetes mellitus is a group of disorders caused by the improper function of the insulin hormone produced in the beta-cells of the islets of Langerhans of the pancreas. Though diabetes is not an uncommon disease, and educational programs are in place to create a conscious society, the number of people developing diabetes continues to increase and the age of diagnosis is decreasing, affecting children at a younger age.  To better understand who diabetes affects, what can place a person at greater risk, and what causes diabetes to develop, research was conducted using several databases. PubMed, MedLine, and Biomedical Reference Collection - Comprehensive were utilized with search words such as diabetes mellitus, gestational diabetes, risk factors, gender differences, environmental factors, stress, and obesity.  Not all of the articles resulting from my search were used, mostly due to the fact that some were far too outdated and more current research addressing the same topics were available. Some studies were localized in certain areas of the world and did not give overall comprehensive information about how diabetes works in diverse populations. Ultimately, 17 of the articles were found to provide an understanding of diabetes in several areas. Included in this review are gender specific, age-specific, and race-specific facts and theories.

II. Incidence & Prevalence

Diabetes Mellitus affects 382 million people worldwide and is estimated to affect more than 592 million people by the year 2035. This means 8.3% of adults in the world have diabetes and this number will increase to 10% in the next 15 years [1]. In the United States alone, the prevalence of diabetes increased from 5.5% to 9.3% in 2010, affecting 30.3 million people by 2015. Of these cases, approximately 95% are diagnosed as type 2 diabetes, and less than 5% are type 1 diabetes.

Age

Diabetes mellitus can affect people of any age and increases in cases have been seen in all age groups. Most cases of diabetes occur in older adults, this includes type 1 diabetes, which was thought to be a juvenile form of the disease. Type 1 and type 2 diabetes has increased in youth. Overall, there has been an annual increase of 1.8%, from 2002 to 2012, in the youth in America. For type 2 diabetes, the annual increase in the same time period was of 4.8% [2].This is in accordance with research done, which estimated 3-5% annual increase in diabetes incidence in Europe and North America [3].That study also stated that the age of diagnosis has decreased, creating an increase in new cases for children under the age of five. As for adults, 90% of cases were diagnosed as type 2 diabetes and onset occurred at an older age, usually above 40 years of age[4].The senior population in America is increasingly affected by diabetes, with twelve million or 25.2% of seniors over the age of 65 having some form of the disease, including diagnosed and undiagnosed cases[5].

Gender

According to the Center for Disease Control, from 2007 to 2010, 13 million (10.6%) women had diabetes, and another 48 million women (39%) had pre-diabetes.  Men had a slightly higher occurrence with 13.6% of men being affected [6].Unexpected differences do exist between genders.  Women were found to have worse survival rates, increased risk of cardiac and renal complications and blindness when compared to men [7].Gestational diabetes is a form of diabetes that affects women during pregnancy. Sex hormone imbalances can have several manifestations related to diabetes, including vascular function, metabolism, and inflammatory reactions. Due to this, women with excess androgens and men affected by hypogonadism experience different metabolic complications [8].More women than men were found to have cases of diabetes related to being overweight or obese. African American women, especially, are more susceptible, with twice the likelihood of developing the disease than white women are. A study found that diabetes symptoms can differ in women and men. Women reported experiencing more drug mouth and abdominal pain than men did. The same study also revealed women were less efficient with their diabetes care than men were[9].

Ethnicity

How diabetes affects different ethnicities is constantly being studied, especially in nations with large immigrant populations such as the United States and Canada. A study done in Canada observed that when compared to white and non-white ethnicities, individuals of South Asian descent had an increased likelihood of developing diabetes[10].Another study done states African-Americans and Hispanics are more likely to develop diabetes than white individuals are - Hispanics having a prevalence of 8% versus 4% in non-Hispanic white adults. Prevalence in the Hispanic community, however, did differ depending on the region in the United States, it was 10.7% in Puerto Rico, 4.1% in the Northeast, and 5.8% in the Southwest, and 4.9% in the South/Southeast. Based on these figures Hispanics in Puerto Rico were almost 3 times more like to develop diabetes than non-Hispanic Whites, and those in the Southwest are twice as likely. Hispanics also showed worse glucose control, and more severe retinopathy than white adults [11].This study also stated that there are differences in how individuals of different ethnicities are treated. African Americans were more likely to be treated with insulin than Mexican Americans and non-Hispanic whites. They were also less likely to self-monitor their glucose levels, even when they were found to have received the most patient education. European populations have a higher likelihood of developing diabetes, and in accordance with this diabetes guidelines recommend Hispanics, Aboriginals, Asians and people of African descent be targeted for screening[10].

III. Risk Factors and Causes

Obesity            
More often than not, obesity is listed as a common risk factor for diabetes. Obesity is defined as the excess accumulation of adipose tissue, causing physical and psychosocial impairment to human health[12].The accumulation of fat differs in healthy and obese individuals. Adipose tissue in obese people tends to accumulate in the central region of the body, including the chest and abdomen. This intra-abdominal fat is mostly related to genes and proteins used in the production of energy. Intra-abdominal fat is also more lipolytic than peripheral fat and responds poorly to the anti-lipolytic function of insulin, increasing insulin resistance, which could ultimately lead to diabetes. Obesity also contributes to the development of diabetes by increasing the amount of nonesterified fatty acids (NEFAs) that are secreted from adipose tissue. Research showed that as serum levels of NEFAs increased, insulin tolerance in humans began to develop. When NEFAs were reduced glucose monitoring and insulin uptake in peripheral tissues improved.  Constant exposure of beta-cells to NEFAs causes reduced insulin production, and therefore affects the regulatory pathways insulin is involved in to keep serum glucose levels balanced. This becomes a cycle, since a compensatory mechanism for damaged beta-cells is to increase lipid secretion of NEFAs[12].Obesity is often determined by the use of body mass index (BMI). Though obesity is correlated to diabetes in both men and women, women were more frequently diagnosed with diabetes in relation to obesity, whereas men were diagnosed at lower BMIs. Body mass index in men can often overestimate fat mass and forget to consider that men have more fat free muscle in comparison to women [8].

Stress & Sleep Deprivation

Several studies have found stress can be a factor increasing the risk for diabetes. Stress may result from a person’s occupation or responsibilities. Even a study done in 1909, showed occupations that involve mental strain, worrying, or excitement increased the possibilities of diabetes onset[13].A more recent study done in Germany, agreed stating that men and women with strenuous jobs had 45% higher risk of developing diabetes[8].Stress was also said to result in women whose husbands had diabetes. These women ultimately also developed the disease themselves[13].Similarly, today, even in educated societies, women were more susceptible to the sustained stress of unpaid household duties and demands[8].A manifestation of stress can be sleep deprivation, where a person gets less than 5 hours of sleep. The risk of women suffering insomnia is 40% higher than in men. This lack of rest is associated with obesity and insulin resistance. Though men gain more weight from lack of sleep and night work, females experience stronger effects earlier. These include greater risk for type 2 diabetes. Ultimately stress and lack of sleep increase a person’s risk for developing diabetes. Since only 20% of the diabetes cases caused by stress were related to obesity, the bettering of factors such as stress are suggested to patients.

 Environmental Factors: Arsenic, Mercury, POPs, BPA, phthalates

Chemicals in the environment have been linked to several components of diabetes mellitus. Mercury, for instance, is a non-degradable toxic heavy metal that causes oxidative stress that kills pancreatic beta cells, affecting the insulin signaling pathway. Cadmium is soft metal commonly found as a protective coating around other metals because it resists corrosion, or as a part of rechargeable batteries[14].Heavy exposure to this metal interferes with calcium reabsorption, which is necessary for the secretion of insulin from beta cells. Arsenic is another chemical that affects the development of diabetes. Residents with chronic exposure to arsenic had an incidence 2 to 5 times higher than those who weren’t chronically exposed. In vitro, chronic arsenic exposure caused oxidative stress and decreased the amount of insulin secreted. In adipocytes. arsenic increased insulin resistance and decreased glucose uptake.

Persistent organic pollutants (POP) are defined by the EPA as toxic chemicals that adversely affect health and the environment. They can be spread by wind or water and persist for long periods of time while moving from species to species. Some POPs include polychlorinated biphenyls, dioxin, and oligo-chlorine pesticides[15].POPs are resistant to biodegradation and their lipophilicity causes them to accumulate in adipose tissue. They are also known as endocrine disrupting chemicals because they interfere with secretion of sex hormones, thyroid hormone, and glucocorticoids. Though POPs were banned several decades ago, their effects continue to persist and can still be found. POPs in fish oil increases insulin resistance and elevates total cholesterol levels.

Other chemicals affecting diabetes levels are BPA and phthalate, which are used in the making of plastic containers many of us use today. These chemicals can seep into water or food stored in these containers. Constant exposure to these affects glucose homeostasis and are more strongly related to Type II-DM [12].

Autoimmune Disorder

Type I-DM makes up approximately 10% of diabetic cases. It is characterized by autoimmune destruction of beta cells. Destruction tends to happen faster in children and adolescents when compared to adults. Genetic and environmental factors have been found that cause Type I-DM. There are more than 60 genes linked to DM, but the most important to Type I-DM is the human leukocyte antigen (HLA) which is found on chromosome 6, the most important alleles being HLA-DR3-DQ2, HLA-DR4, and DQ8. The heterozygous presentation of HLA-DR3-DQ2 and HLA-DR4 has the highest likelihood of developing Type I diabetes. A study showed that siblings that shared HLA-DR3 and HLA-DR4 had a 55% chance of developing Type I-DM by the age of 12, whereas those who didn’t only had a 5% chance. 16 These mutations are thought to cause the autoimmune response marked by T-cells that destroys beta cells, and the antibodies produced that also attack. Islet Cell Antibodies (ICA) serve as a biomarker, and these antibodies target the antigen located win the cytoplasm of islet cells of the pancreas and lead to the destruction often cell.  Insulin Antibodies (IA) are found in other autoimmune diseases, but it is their concurrence with ICAs that causes the highest risk for Type I-DM. The same study, previously mentioned, stated that with the heterozygous there was a 63% chance of developing these antibodies by the age of 12, and those lacking the heterozygous form only had a 20% chance of developing by the age of 20. Type II-DM is said to be called a “geneticist’s nightmare”, but the fact that there is a genetic factor is commonly accepted especially since family penetrance supports this. Environmental factors relating to the cause of diabetes include viruses such as rubella, mumps, and coxsackie virus B[4].

 Gestational Diabetes Mellitus

Gestational diabetes can be defined as the intolerance to glucose first diagnosed during pregnancy. The incidence of gestational diabetes can be as high as 22% depending on the population and is increasing as factors such as obesity, maternal age, and changes to urban lifestyles are increasing[17].This form of diabetes is caused by the mother’s inability to increase insulin production to maintain euglycemia[4].

IV. Pathophysiology

Diabetes mellitus is a disorder dealing with hormone regulation of glucose metabolism. Glucose is one of the main sources of energy for the human body. We can acquire glucose from carbohydrates, which human bodies completely metabolize into glucose. Proteins and fats also serve as sources of glucose, though their effect on blood glucose levels is less impactful. Essentially, this means everything we eat contains glucose. In order to regulate the amount of glucose consumed, there are transporters in place to move glucose into   tissues such as muscle or liver tissue. This transport of glucose is facilitated by insulin hormone. Insulin is produced by the pancreas, an organ with both endocrine and exocrine functions. Exocrine functions of the pancreas are to secrete digestive enzymes into the gastrointestinal tract to improve absorption of nutrients. Endocrine functions of the pancreas are to produce hormones that aid in metabolism. Islets of Langerhans are endocrine regions often pancreas contaminating alpha cells, which produce glucagon, and beta cells, which produce insulin[4].

Glucagon and insulin work in balance to regulate the metabolism of glucose depending on the condition and needs of the individual. Glucagon is the main catabolic hormone in the body. It is released into blood when levels of glucose are low and causes liver cells to convert glycogen into glucose via glycogenolysis. The glucose is then released to elevate blood glucose levels and to be used as energy. Beta cells are essential as they sense when glucose levels are too elevated. The mechanism used to sense glucose levels involves several steps. To begin, glucose uses GLUT transporters to move into the beta cells. Once glucose is in the cytoplasm, it undergoes glycolysis, releasing ATP. As more glucose enters the cell, levels of ATP increase and are sensed by sulfonylurea receptors (SUR1) of potassium channels, which consequently close. Depolarization of the cell causes calcium channels of the beta cells to open and calcium binds to proteins, triggering the release of insulin-containing granules. Insulin released into the blood stream increases the glucose uptake by muscle and adipose cells up to twenty-fold. Insulin also directs glucose conversion into glycogen, pyruvate, lactate, and fatty acids [4].

When the balance maintained by glucagon and insulin is interrupted by deficiencies in or resistance to insulin the result is hyper glycemia. In Type I-DM the main issue is the insufficiency of the insulin produced. This reduced amount of insulin is the result of an autoimmune response where T-cells react to islet cell antigens presented by HLA Class II. T cells destroy these beta cells and then present them to B-cells of the immune system for the production of antibodies that will keep destroying. Destruction of the beta cells must be significant since 10-20% of beta cells can produce enough insulin to cover clinical symptoms.

Type II-DM is an insulin resistant form of diabetes where the body loses its ability to produce insulin as the need for insulin increases. In addition to this the receptors for insulin of fat and muscle cells do not respond adequately to the insulin being produced.

V. Discussion

Diabetes mellitus is a disorder affecting the entire world. Obesity, stress, pollutants are things advised against every day, but despite constant conversation and education efforts made to alert the public of what an endemic disorder this is, rates of obesity continue to increase. Unfortunately, these rates are extending to the younger population affecting children early on. The impact diabetes has on women is extensive compared to that it has on men. Women in today’s world have responsibilities as home makers, breadwinners, and whatever else comes their way. This lifestyle adds on stress and often a busy schedule that doesn’t allow for healthy eating. Examining the factors contributing to the increasing diabetes incidence in women and men should cause some kind of spark in the medical field to address these issues. Women and children have been made targets for diabetes screening, but perhaps another part of this should be ensuring this is a service provided to people of all socioeconomic status. There should be availability for all residents, citizens, and even undocumented immigrants. Politics can have many loopholes, but physicians are there to care for people’s health around them. Perhaps clinics should make an effort to extend potentially life-saving screening and education to underserved areas.

Environmental chemicals were briefly discussed. BPA and phthalates should be more of a concern today. Few people are aware of the impact these chemicals can have on hormonal health and balance. Promoting the use of glass bottles could be useful preventative measure.

Many diseases aren’t as concerning today as they were when first discovered. One of these is HIV, but like HIV, diabetes should not be accepted as a growing disorder simply because there are medications to treat it. People should have awareness of what they consume, the materials they use and the stresses they take on.

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