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Aug 2018 DOI 10.14302/issn.2577-2279.ijha-18-2221
Ahmed Abdelrahman NuggedAlla MotazCorresponding author
Faculty of Medicine and Health Sciences, Head of Department of Anatomy, University of Kassala.
Background: Faculty of Medicine and Health sciences at University of Kassala, Sudan was established 1990. It adopts the traditional curricula, which implemented in preclinical (basic sciences) and clinical phases. This study was held to explore students' perception and attitudes towards the basic sciences. Methods: A descriptive cross-sectional study was conducted during April- August 2017 among 251 medical students. Self-administered questionnaire was used to collect data. It was collected and analyzed using SPSS 16.0. Results: A total of 251 of participants in different phases of education in faculty of medicine and health sciences were included in the study; preclinical 116 (46.2%), 113 clinical (45.0%), and 22 (8.8%) were in internship. 95 (37.8 %) were males and 156 (62.2%) were females. The study revealed that physiology was the most preferable subject. Students' satisfaction to syllabus for anatomy, physiology and biochemistry was 61.4%, 43%, and 28.7% respectively. However, 46.6% of students spent a long time to understand biochemistry and 33.1% considered it as overloaded syllabus. Participants showed poor ability to link between theoretical and practical work in case of biochemistry (26.7%), where as anatomy and physiology were represented by 76.9% and 42.2% respectively. Less than half of students were able to integrate the subjects of basic sciences and basic with clinical sciences. Conclusion: In this study, the students determined the difficulties of recalling of information, poor integration between basic and clinical sciences and even integration within the subject. Development of integrated curriculum is necessary to improve the quality of education.
Oct 2023 DOI 10.14302/issn.2379-7835.ijn-23-4737
J. Johnson JeremyCorresponding author
Bitter melon is a popular fruit cultivated in Southeast Asia and other tropical climate regions. Bitter melon has been used in traditional medicine because of its numerous medicinal benefits, including having hypoglycemic effects. This has an indication for diabetic patients, and several clinical trials have provided evidence that orally administered bitter melon extract can reduce A1C and blood sugar levels in diabetes patients. In vitro and in vivo mechanistic studies suggest that bitter melon’s anti-diabetic actions work through intra- and extra-pancreatic mechanisms. Herein we summarize and highlight these mechanistic and clinical studies that have demonstrated the hypoglycemic effects of bitter melon in type 2 diabetes patients.
Aug 2023 DOI 10.14302/issn.2688-5328.ijp-23-4624
James AndersonCorresponding author
Periauricular Vagus Nerve Stimulation (pVNS) has been proven safe and effective in reducing chronic pain and related comorbidities in numerous clinical studies. This multicenter, interventional study used a non-randomized, interrupted time-series analysis to test the efficacy of an 8-week treatment protocol using the Stivax neurostimulator device. Subjects (n=33, 15 F, 18 M, age 40-77) were recruited at 3 clinic sites in California and Colorado. All subjects had long-term chronic pain and had failed other treatments. Subjects were treated with the Stivax device 3 times (2 weeks on, 1 week off). Subjective assessments of pain (Visual Analog Scale), disability (Oswestry Disability Index), depression (PHQ-9), and activity (IPAQ-E) were collected at baseline and weekly. Objective blood levels of pain-related cytokines collected at the end of weeks 2 and 8. Most subjects reported reduced pain, disability, and depression, with increased activity levels. At the end of week 8, subjects reported an average reduction in pain by 38.5% (3 subjects reported no pain), depression by 43.6% (2 subjects reported no depression), disability by 38.6% (2 subjects reported no disability), and an average 26.1% increase in activity level (5 subjects doubled their activity level). Levels of the pain-related cytokines IL-1ꞵ, IL-2, IL-3, IL-7, IL-10, IL-15, IL-17α, IL-21, TNF-α, IFN-γ, and FLT3-ligand showed improvement at week 8. pVNS is believed to “reset” central sensitization underlying chronic pain and other central sensitization syndromes, engaging the body’s pain modulation systems. Our results indicate that pVNS can clinically significantly improve chronic pain and associated morbidities without adverse effects.
Jan 2021 DOI 10.14302/issn.2692-1537.ijcv-20-3685
Elkhenany HodaCorresponding author
Department of Surgery, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt.
The current uncontrollable outbreak of novel coronavirus (COVID-19) has unleashed severe global consequences in all aspects of life and society, bringing the whole world to a complete halt and has modeled significant threats to the global economy. The COVID-19 infection manifests with flu-like symptoms such as cough, cold, and fever resulting in acute respiratory distress syndrome (ARDS), lung dysfunction, and other systemic complications in critical patients are creating panic across the globe. However, the licensed vaccine has started to show up; some resulted in side effects that would limit its possibility in some circumstances as allergic personnel, for example. Moreover, the production and approval of new drugs is a very complicated process and takes a long time. On the other hand, stem cells have gone the extra mile and intensively investigated at preclinical and clinical studies in various degenerative diseases, including infectious ones. Stem cells are proposed as a broad-spectrum therapeutic agent, which may suppress the exaggerated immune response and promote endogenous repair by enhancing COVID-19 infected lung microenvironment. Also, stem cells have different application manners, either direct transplantation, exosome transplantation, or drug delivery of specific cytokines or nanoparticles with antiviral property by engineering stem cells. This review discusses and summarizes the possible emerging role of cell-based therapy, especially stem cell therapy, as an alternative promising therapeutic option for the treatment and control of novel COVID-19 and its potential role in tissue rejuvenation after COVID-19 infection.
Dec 2020 DOI 10.14302/issn.2835-513X.ijl-20-3247
Z A Soliman GhadaCorresponding author
Prof Biochem, NNI, Cairo, ARE
Hypercholesterolemia plays an important role in atherosclerosis and cardiovascular diseases (CVD) that represent one of the greatest worldwide medical problems nowadays. Recently, an increased attention/ interest for natural antioxidant/ hypercholesterolemia as WG/WGO is increasing. Wheat germ/ Wheat germ oil (WG/WGO) is an excellent source of essential and polyunsaturated fatty acids and vitamin E. It is one of the richest natural sources of tocopherol. This work aims to evaluate the effect of administration of wheat germ (WG) /wheat germ oil (WGO) for 6 weeks on serum lipid profile, lipid peroxidation (liver malondialdehyde) in hypercholesterolemic rats. One hundred and twenty maleSprague Dawelyrats weighing 180-192 gm were used in this study. They were randomly distributed into six groups (20 rats/ group) as follow: g1: normal control, G2: hypercholesterolemic rats; G3: Normal rats treated with WG; G4: hypercholesterolemic rats treated with WG; G5: Normal rats treated with WGO; G6: hypercholesterolemic rats treated with WGO for 6 weeks. Also WG was analysed for its nutritive value, while WGO was analysed for fatty acid profile, and studied for its physico-chemical properties. The results showed significant elevation of liver malondialdehyde (MDA) and serum lipid profile in untreated rats fed on hypercholesterolemic diet. Hypercholesterolemic rats treated with WG/WGO showed an improvement in the biochemical assay of their lipid profile compared with untreated hypercholesterolemic rats. WG/WGO may be able to protect against atherosclerosis and CVD. The administration of WG /WGO to diets of rats caused a marked reduction in TC, LDL-C, VLDL-C, TG and MDA. This improvement effect may be mediated via enhancement of the antioxidant defence system and other factors. However, further clinical studies on human beings are required to assess the efficacy and safety of the WG/WGO.
Jun 2020 DOI 10.14302/issn.2641-4538.jphi-20-3442
Cameron Y. S. LeeCorresponding author
The Covid-19 pandemic has swept rapidly from Wuhan, China to the entire globe in less than six months, infecting over 7 million people and claiming the lives of over 500,000. In the United States, greater than 2 million individuals have become infected and over 110,000 people killed. With no evidence of slowing of the coronavirus that causes Covid-19, public health authorities must prepare for possible sustained transmission of Covid-19, or a second wave into the Fall 2020, but with the presence of the influenza A virus. In the Fall 2020, schools will reopen from kindergarten to 12th grade. Dual pandemics or epidemics will result in high morbidity and mortality not observed when either virus was solely active. Community leaders, educational administrators and public health systems must be prepared for simultaneous outbreaks of both Covid-19 and influenza. Although there are no clinical studies that have evaluated the benefits on the use of face masks during an epidemic or pandemic, public health non-pharmaceutical intervention (NPIs) measures should include the routine use of face masks during school sessions. Using face masks with other NPI may interrupt viral transmission as it has been established that respiratory viruses, such as Covid-19 and the influenza virus are transmitted via respiratory droplets, aerosols, and environmental surface contact.
Nov 2019 DOI 10.14302/issn.2574-4526.jddd-19-3063
I Alvarez-Leite JacquelineCorresponding author
Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerias, Brazil.
Most of the patients with inflammatory bowel disease avoid pepper or spicy food, alleging that this condiment causes anal sensation of burning and accelerates intestinal movements. Capsaicin is the main bioactive component of peppers responsible for the pungent flavor that characterizes red peppers. Capsaicin has been related to several biological effects, including decreased body fat, antianti-inflammatory, anticarcinogenic, antioxidant activites and modulator of intestinal motility. These actions mostly are due to its role as an agonist of the transient receptor potential vanilloid 1 (TRPV1), expressed in the mesenteric nervous system and epithelial cells of the colon. Nonetheless, the anti-inflammatory action of capsaicin is also related to its role in activating the peroxisomal proliferator-activated receptor gamma (PPAR-γ). Topical capsaicin formulations are already used for pain management, but oral administration of capsaicin is rare. Here, we discuss the main actions of capsaicin that could interfere with the symptoms and severity of IBD. Although animal experiments suggest a beneficial effect of capsaicin on colitis, clinical studies exploring the potential analgesic and anti-inflammatory of capsaicin on Crohn or Ulcerative Colitis are scarce. We concluded that there is no evidence that capsaicin aggravates IBD symptoms or severity. On the opposite, experimental studies suggest that capsaicin could reduce intestinal inflammation by a mechanism that could involve not only the TRPV1 receptor but also PPAR γ. However, clinical studies are still scarce, and data regarding capsaicin concentrations, routes of administration, and long-term side-effects need to be better understood before its use.
Jan 2019 DOI 10.14302/issn.2572-3030.jcgb-18-2527
Zhang XiCorresponding author
Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, United States
As remarkable advances have been made in immunotherapies, the overall goal of immunotherapy has become the selection of patients and evaluating the benefits of treatment. One of the major obstacles to develop immunotherapies is the lack of effective immune monitoring. Monitoring of key changes in the immune system during immunotherapy (immunomonitoring) provides important insights into efficacy as well as the immune mechanisms of response at the molecular and cellular levels. Immunomonitoring techniques include traditional immunoassays that use specific antibodies to recognize the analytes of interest, new high-throughput immunoassays that target immune cells and nucleic acids, and less classical immunogenomic approaches that rely on genome-wide profiling and computational analysis on various types of clinical samples. Substantial progress has been made in the application of immunomonitoring strategies to pre-clinical and clinical studies, especially for patients with cancer and infectious diseases. Current and emerging immunoassays performed in clinical practice will be examined herein, and immunogenomic approaches that complement these techniques will be highlighted and compared with traditional methods. Finally, we will discuss several new computational methods for analyzing gene signatures for immunomonitoring, including gene expression data profiling by microarray, the nCounter technique, regular RNA-seq, and single-cell RNA-seq. Novel immunomonitoring techniques, especially immunogenomic approaches, will continue to be developed to facilitate assessment of immunotherapeutic response and predict patient outcomes in cancer and infectious disease.
Apr 2018
Li DongyeCorresponding author
Department of Cardiology, The Affiliated Hospital of Xuzhou Medical University, 221006, Xuzhou, Jiangsu, PR China
Heart failure(HF) is a disease with high morbility and mortality. The benefits of current pharmacological and device therapy for survival outcomes of patients with HF are limited. Gene therapy represents a novel promising strategy in treating HF, as it can theoretically normalize the aberrantly expressed genes and their regulatory mechanisms permanently. However, the translation of gene therapy for HF from bench to bedside has been less successful. There are many challenges ahead for gene therapy, especially in the areas of selection of the optimal targets, the needs for developing delivery systems and the improvement in design of clinical trials. In this review, we summarize the most promising gene targets which have been used in experimental and clinical studies for treating HF, highlighting the results from several clinical trials. We also review the latest development in gene therapy vectors and delivery methods, aiming to provide directions for future studies.
Jan 2018 DOI 10.14302/issn.2578-8590.ipj-17-1910
J Foster WilliamCorresponding author
Department of Physics, University of Houston, Houston, TX, USA
Following ocular trauma and retinal detachment, gliotic changes in the retina may develop over the subsequent month, a process known as PVR (proliferative vitreoretinopathy). There have been no successful therapeutic interventions to inhibit PVR. The protein CTGF (Connective Tissue Growth Factor) has been associated with retinal PVR and other fibrotic diseases of the retina in clinical studies but the mechanistic link between different pathologies and retinal gliosis has not been determined. In addition, CTGF has been previously noted to be associated, in some cases, with YAP/TAZ (Yes-associated protein and Tafazzin protein complex), transcriptional regulatory proteins that change subcellular localization in response to mechanical cues, such as the stiffness of the underlying material. We have previously shown that the mRNA for CTGF is markedly (100-fold) upregulated in retinal Müller cells grown on soft substrates. In order to evaluate if the mechanism by which mechanotransduction modulating CTGF production in retinal Müller cells involves the YAP/TAZ complex, this study tests the influence of substrate stiffness on the time dependence of CTGF protein expression, as well as subcellular localization of YAP/TAZ using a conditionally-immortalized mouse retinal Müller cell line plated on laminin-coated, polyacrylamide substrates of varying elastic modulus. Changes were assayed using immunohistochemistry and ELISA (Enzyme-Linked ImmunoSorbent Assay). In retinal Müller cells, the relationship between elastic modulus and the pattern of CTGF protein expression was bimodal, with CTGF levels rising more rapidly for cells on hard substrates and more slowly for cells grown on soft substrates. In addition, nuclear localization of YAP/TAZ corresponded directly to the maximum CTGF expression.
Jun 2016 DOI 10.14302/issn.2329-9487.jhc-16-931
F.Babbs CharlesCorresponding author
Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, USA
Background: This brief report presents a potential new technique for locating the sites of origin of focal atrial tachycardias from standard 12-lead electrocardiograms. Methods: Estimated P wave vector coordinates are derived from leads I, aVF, V1 and V2, and mapped to a three dimensional coordinate system in space. A simple graphical method is used to find the back projection of the P wave vector onto the surface of atrial muscle to estimate the most likely site of origin of the tachycardia. Results: Graphical back projection correctly identified foci of atrial tachycardias in 19 of 19 cases described in the most complete available published study. Conclusions: Clinical studies are indicated to validate this simple method for initial noninvasive evaluation of candidates for ablation therapy.