Showing 15 results for Arc
Hossein Fakhrzadeh, Iraj Nabepoor, Mohammad Rayani, Ali-Reza Vassigh,
Volume 2, Issue 1 (5-2003)
Abstract
Background: We estimated the prevalence of angina pectoris (AP) and myocardial infarction (MI) in the hyperlipidaemic population of Bushehr using the ROSE questionnaire and ECG changes using the Minnesota code.
Methods: 1036 residents of Bushehr (in southern Iran), aged 30-64 years, were enrolled as part of a 2-year cross-sectional prevalence study of diabetes mellitus and other risk factors for coronary heart disease. All participants completed a ROSE questionnaire and underwent 12-lead electrocardiography. ECG strips were interpreted according to the Minnesota code. The criteria for diagnosing AP was grade 1 or 2 on the angina pectoris diagnostic scale, and for MI, code 1.1 of the Minnesota code or a history of myocardial infarction. Results: The crude prevalence of hypercholesterolaemia was 47.6%, and its age-adjusted prevalence 50.3% in women and 43.9% in men. Mean serum cholesterol was 204.2±49.5mg/dl in women and 195.0±46.1 in men (p=0.003). The prevalence of AP was 4.9%, which, after adjustment for age, came to 5.6% in men and 4.6% in women. The prevalence of AP was 6.3% in subjects with high cholesterol and 3.6% in subjects with normal cholesterol levels (p<0.05). There was a strong association between AP and hypercholesterolaemia in men (p<0.0005). The crude prevalence of MI was 4.1% in subjects with hypercholesterolaemia and 0.9% in subjects with normal cholesterol (p<0.05). In multivariate analysis, MI was correlated with hypercholesterolaemia in both sexes (p<0.05). Similarly, MI in both men and women was associated with diabetes, and in men alone with hypertension (p<0.05). Conclusion: It is imperative to reduce the average cholesterol level of the population of Bushehr in order to decrease the incidence of AP and, ultimately, MI. Interventions to improve people s lifestyle are of one of the effective measures that may be used in this regard.
Sr Majdzadeh, B Larijani,
Volume 3, Issue 0 (7-2004)
Abstract
The current challenge in health services research is disability to present comprehensive and effective intervention plans for community health promotion. There are numerous reasons in this regard, some of which can be overcome through performance-based participatory research methods. The Population Research Center (PRC) in Tehran University of Medical Sciences (TUMS) provides the necessary ground: 1) to innovate original methods in participatory research that are compatible with our native culture, and 2) to make the results of the population research applicable to the whole society through target-based executive steps. The steps to implement health promotion (known as Planned Approach To Community Health) include: acquirement of people’s participation, health needs assessment, priority setting for health problems, designing health interventions, and evaluation of the activities. Those parts of this approach, which are mainly concerned with needs assessment in the area of endocrinology and the causal factors of related diseases, have been accomplished. The next step in this field is to plan appropriate intervention projects and to put them into practice through the principles of community participation and community empowerment.
Bagher Larijani, Farzaneh Zahedi,
Volume 4, Issue 0 (2-2005)
Abstract
Background: In modern biomedicine, there is an increasing speed of development of new ideas and technologies and, consequently, increasing speed of new applicable knowledge. The rapid advances in medicine and biotechnology during recent decades, is accompanied with important discussions about new questions and dilemmas in the field of professional ethics. The increased recognition of ethical problems has contributed to the emergence of medical ethics as a new, cooperative and collaborative discipline in the world.
Methods: This article provides an introduction to main issues in modern medical ethics. It is a review of a great deal of books and articles which are published in the recent years.
Results: Some of the issues discussed include: physician-patient relationship, consent and informed decision-making, issues before birth, and end of life issues. Ethical issues in organ transplantation, biotechnology, assisted reproduction, medical research, clinical ethics education, and resource allocation are also reviewed briefly.
Conclusion: This intensive review of the basic issues in contemporary medical ethics is aimed at providing health care professionals a basic knowledge about ethical issues within their clinical practice.
Alireza Bagheri,
Volume 4, Issue 0 (2-2005)
Abstract
Background: Global distribution of diseases in recent years has shown that health problems are no longer limited to the geographical borders of a country but are a global. Establishing international research collaboration has been highlighted as an appropriate strategy for confronting health problems. The possibility of exploitation of human subjects and also research capacity in developing countries particularly by pharmaceutical companies has caused concerns about the nature of such kind of research collaborations. In many countries general ethical guidelines help researchers and ethics committees to deal with the issue. However lack of expertise in general as well as ethical guidelines to address externally-sponsored research in particular, exposed human subjects to greater harm and has ignored ways of guarantying their benefits.
Methods and Results: In view of experiences of clinical trials which have been conducted in Africa and Asia by developed countries, this paper focuses attention of researchers and health policy makers on externally-sponsored researches. By reviewing the international ethical guidelines, the paper argues for the development of national ethical guidelines in order to protect human subjects as well as national interests.
Bagher Larijani, Farzaneh Zahedi, Fariba Asghari,
Volume 4, Issue 0 (2-2005)
Abstract
Background: While the results of genetic research have increased our medical knowledge, promoted health and treatment of illness, some unique ethical problems arise about this type of research. Genetic information is often considered "special", or different from other kinds of medical information because of its close association with individual identity, which is due in part to the common assumption that genes are determinative of human health and characteristics. Thus there is potentially risk of harmful events genetic research participants including stigmatization or discrimination by employers and insurers. In addition, the fact that genetic information about an individual reveals information about relatives, creates new and complex ethical issues, particularly regarding privacy and confidentiality.
Methods: Given the importance of this subject, we searched PubMed, Medline and Ovid for some keywords such as "genetic research" and "ethics" during the recent decade. We compiled the article by reference to valid searched articles and some books.
Results & Conclusion: Informed consent, confidentiality, ownership of genetic information, family/cultural considerations, storage and future use of genetic samples, counseling and supervision contrivances are some respect important general ethical concerns which this paper discuss about briefly
Mohammad Alidousti, Gholamreza Davoodi,
Volume 4, Issue 1 (7-2004)
Abstract
Background: Obesity is associated with many metabolic and cardiovascular diseases, for example, a direct and indirect relation has been established between obesity and diabetes, dyslipidemia, hypertension and atherosclerosis. But whether regional fat distribution contributes independently to risk remained unclear. This study was designed to determine relation between central obesity and acute myocardial infarction (AMI).
Methods: In this case-control study, body mass index (BMI) and waist to hip ratio (WHR) were calculated in 420 participants (140 cases and 280 controls). BMI and WHR means were evaluated in subgroups according to age, sex and cardiac risk factors. Odds ratio (95% CI) of the MI incidence in obese participants (BMI≥27 and/or WHR≥0.85) were compared with non obese subjects in each subgroups.
Results: Mean BMI mean in the case group (27.9±4.9) was more than control group (25.8±4.9) P≤0.05). The obese individuals had more chance of AMI (OR=3.2 CI=3-3.3). This chance increased with central obesity (OR=3.4 CI=3.2-3.6). Risk of AMI in younger obese participants (OR=4.3 CI=2.8-6.8) was more frequent than older ones (OR=2.1 CI=1.7-2.4). Central obesity increased risk of AMI in women (OR=3.6 CI=3.1-4.4) more than men (OR=2.2 CI=1.7-2.5).The excess risk of AMI in obese participants in associated with major cardiac risk factors was as following: hypertension (OR=18.4 CI=9.8-22.1), diabetes (OR=9 CI=4.2-14.1), hyperlipidemia (OR=6 CI=2.1-8.4), positive familial history (OR=2.6 CI=2.1-3.4) and smoking (OR=1.2 CI=0.9-1.7).
Conclusion: There is a strong association between BMI, WHR and risk of AMI. Central obesity comparing with general obesity has stronger relation with AMI incidence especially in women and younger subjects. In addition, cardiac risk factors except smoking aggravated correlation between obesity and AMI.
Reza Rajabian, Mohammad Khajedeluee, Afsoon Fazlinejad, Javad Rezazadeh,
Volume 4, Issue 4 (6-2005)
Abstract
Background: Myocardial infarction is the most important cause of mortality all over the world. Complications may increase with some risk factors including stress hyperglycemia. The aim of this study was to evaluate the correlation and importance of hyperglycemia in acute intrahospital complications after AMI.
Methods: Prevalence of stress hyperglycemia among 160 patients with acute myocardial infarction (Q wave MI) was determined. These patients were divided into normoglycemic and stress hyperglycemic groups. These were compared according to complications such as heart failure, cardiogenic shock and mortality.
Results: 61% were normoglycemic and 7.5% had stress hyperglycemia. 25% had history of diabetes and 4.4% were not aware of diabetes. Among 18 patients with stress hyperglycemia, 6 patient (50%) and among 101 normoglycemic patients 18 (17.8%) were affiliated with cardiac failure that the difference were significant (P=0.02 and χ 2= 6.25). There were no cases of cardiogenic shock in both groups. Three patients died during first hours of admission (2.97%). They hadn't have history of diabetes. We could not assign them to normoglycemic or stress hyperglycemic groups since blood sampling had not been done yet.
Conclusion: Stress hyperglycemia can increase complications of AMI, significantly stress hyperglycemia caused increased incidence of heart failure in this study.
Bagher Larijani, Farzaneh Zahedi,
Volume 5, Issue 4 (6-2006)
Abstract
Medicine and ethics have increasingly more links caused by considerable progresses in biotechnology in different fields of medical diagnosis, treatment and prevention. The issue of research ethics is one of the most important subjects which have been emphasized by international and regional organizations, policy-makers, medical and religious professions, scientists and researchers in different countries in recent decade. It is widely understood that research ethics committees typically play an important role in evaluating the ethical aspects of medical research. A ‘Research Ethics Committee’ (REC) is defined as a multidisciplinary, independent, body charged with reviewing research involving human participants to ensure that their dignity, rights and welfare are protected. Research ethics committees protect the welfare and rights of participants involved in research through reviewing research proposals, monitoring the conduct of research and dealing with complaints that arise from research.
This manuscript will introduce you to the concepts underlying research ethics committees worldwide and in Iran. This paper will begin with a brief history of research ethics, continues with a concise overview of ethics committee situation and responsibilities, and ends with an outline of the national activities. We hope the manuscript could enhance awareness of biomedical researchers about status and duties of research ethics committees and consequently strengthen the RECs in our country.
Hamideh Moosapour, Farzaneh Saeidi Fard, Bagher Larijani, Akbar Soltani,
Volume 16, Issue 3 (3-2017)
Abstract
Research, as systematic way to discover, interpret, explain, predict, modify, and control events, entails the knowledge-based performance of individuals, organizations and systems. Today, knowledge is a tool for development, entrepreneurship, and improving economic value added rather than be a product of development. Also, Health systems, with their increasing complexity and scope, are causes and especially effects of an increasing rate of production, translation and implementation of health-related knowledge. This knowledge, with complexity, vast range, and variety, is produced by variety of research projects which mainly resulted from different problems addressed and presumed epistemic positions by them.
Authors believe that a comprehensive outlook on the variety of research projects in the health system could help to change the stereotypical view on research in the health system. To the best of our knowledge, this paper is a novel, narrative review gathering and presenting various existing classifications of research projects in the light of an inductive distinction. It aims to help specialists in the different levels of health system to profoundly understand and meticulously apply research results and to help researchers and research bodies to more accurately define, manage, prioritize, and allocate resources for future research projects to solve upcoming problems.
Different aspects used in this paper to classify health research projects are the followings: The purpose of research, the research paradigms, tacit or explicit knowledge, primary or secondary knowledge, relation with known disciplines, functions of the health system, the partnerships of non-academic persons, decision-making level, taxonomy of questions, and levels of evidence.
Ata Pourabassi, Zahra Kheiry, Sarah Nouriyengejeh, Solmaz-Sadat Naghavi Alhosseini, Farnaz Banakar,
Volume 18, Issue 3 (3-2019)
Abstract
Background: The main problem of modern humans is non-communicable diseases such as diabetes, cardiovascular disease, etc. Diabetes has the highest prevalence. It imposes many costs on society and the patient. Diabetics have special needs for a better life; hence, the researcher's aim is to accomplish them by defining researches and technology missions. Our purpose was to understand the real needs of a diabetic patient. Previous studies were evaluated to find out which one was effective.
Methods: In this research, 120 diabetic children's parents were requested to write a letter entitled "Hi Inventor" and describe any efficient inventions, which could make life easier for their children. Besides, research papers and patents from Iran over the past ten years have been evaluated in terms of their compliance with patients' needs.
Results: Parent's statements gathered in the form of 12 real needs. The main concern was the invasive method of blood glucose testing and they were asking for innovative method to measure blood glucose with less pain. Among published articles by Iranian researchers over the past ten years, 3% of the articles were in some way related to the actual needs of patients with diabetes. A total of 1017 patents from Iran was looked for, there were 3 diabetes-related patents.
Discussion: To sufficiently support the conducting research and identifying research priorities in the country, it is necessary to consider a balanced ratio between fundamental and applied research so that the patients' community can benefit from the early results of research as well.
Mahnaz Sanjari, Noushin Fahimfar, Fatemeh Hajivalizadeh, Safora Gharibzadeh, Kazem Khalaji, Zohreh Hosseinzadeh, Firozeh Hajipour, Kobra Gorgani, Afshin Ostovar,
Volume 20, Issue 1 (1-2021)
Abstract
Background: Osteoporosis is one of the most important health problems in the country due to fracture. Osteoporosis Research Center with more than 20 years of experience in this field tries to present achievements and activities of the management and treatment of osteoporosis in the country while introducing this center. This review aims to overview the osteoporosis research center activities on osteoporosis.
Methods: In these conventional review national and international databases were investigated on osteoporosis without any restriction on time and language. Also, other activities that are not reflected in the papers were obtained from the professional website and official reports.
Results: According to the strategic plan of the osteoporosis research center, the achievements of this center provided in in three areas of research (population-based studies, clinical studies, basic science studies and health system studies), technology (diagnostic, therapeutic technologies, service delivery models) and education (training students at different levels of education). Supplementary, patient education, general education, and service provider training).
Conclusion: Osteoporosis Research Center is recognized as the only specialized research center in the field of osteoporosis in the country. The center is trying to improve its position as a regional center in the field of osteoporosis by relying on its strategic and operational plan, in addition to maintaining its current position.
Shahnaz Esmaeili, Fatemeh Bandarian, Farideh Razi, Hossein Adibi, Ali Jalili, Babak Arjmand, Camelia Rambod, Ensieh Nasli-Esfahani, Bagher Larijani,
Volume 20, Issue 1 (1-2021)
Abstract
Background: Endocrinology and Metabolism Research Institute (EMRI) is one of the largest research institutes in Iran, which has been established to develop research strategies and manage endocrine and metabolic diseases such as diabetes. The purpose of this report is to review and summarize research activities related to diabetes over a quarter of a century at EMRI.
Methods: A comprehensive search of PubMed, Scopus and EMBASE was conducted to find diabetes-related studies in EMRI. After extracting the data, the articles were classified according to the type of article, the level of evidence, the types of diabetes and their subject.
Results: After eliminating duplicates and screening, finally 228 articles were classified. Most diabetes research conducted at the Diabetes Research Center (DRC) was on type 2 diabetes (37%). By article type, most of the articles were original. In addition, clinical studies provided the most evidence in the obtained documents. By topic, most of the articles were related to the basic sciences and factors related to diabetes, followed by studies on the management and prevention of diabetes.
Conclusion: Most of the research conducted in the Diabetes Research Center in the past quarter of a century is of original studies in the field of basic sciences in the field of type 2 diabetes and most of the evidence produced is related to observational studies.
Asma Soleimani, Mohammad Fathi, Mostafa Bahrami,
Volume 24, Issue 3 (7-2024)
Abstract
Background: The purpose of this study was to investigate the effect of sports rehabilitation exercises with vitamin D consumption on fatigue, sleep quality and depression level of people with osteosarcoma cancer after bone marrow stem cell transplantation.
Methods: In this study, 27 women with osteosarcoma cancer with body mass index above 30 kg/m2, age 24.90±4.03 years, height 163.85±3.62 cm and weight 82.17±4.5 kg were randomly divided into four groups. (patient-exercise), (patient-exercise-vitamin D), (patient-exercise-placebo) and (control) were divided. The training protocol includes ten weeks of Pilates exercise. The supplement group took 500 IU of vitamin D three days a week for 10 weeks. Data were analyzed using dependent t-test and one-way analysis of variance.
Results: The results of the covariance analysis of the research of three exercise groups showed that after ten weeks of sports rehabilitation with vitamin D consumption, the indicators of fatigue and the level of depression decreased significantly (P≤ 0.05). Also, the results of covariance analysis of the three training groups showed that the overall sleep quality of people with osteosarcoma cancer increased significantly (P≤ 0.05). Conclusion: Based on the obtained results, it is suggested that the consumption of vitamin D along with exercise rehabilitation can be an effective treatment method for fatigue, sleep quality and depression in people with osteosarcoma cancer.
Conclusion: Based on the obtained results, it is suggested that the consumption of vitamin D along with sports rehabilitation can be an effective treatment method for fatigue, sleep quality and depression in people with osteosarcoma cancer.
Zohreh Massah, Farzaneh Taghian,
Volume 25, Issue 3 (7-2025)
Abstract
Background: Polycystic ovary syndrome (PCOS) is the most common endocrine disorder among women and has lifelong health effects. This study aimed to investigate the physiological effects of PCOS on neurogenesis and cognitive symptom improvement through lifestyle changes and the use of complementary and alternative medicine.
Methods: In this experimental study, 30 female C57BL/6 mice with a mean weight of 18±2 kg and an age of 6 to 7 weeks were randomly divided into five groups: control group, polycystic group, polycystic + swimming exercise group, polycystic + soy group, and polycystic + exercise + soy group. Real-time PCR measured gene expression. Genes were selected with the help of bioinformatics software. ELISA evaluated luteinizing hormone(LH ) concentration.
Results: FN1-ARC-NGFR-BDNF genes showed decreased expression in mice with PCOS compared to the control group. On the other hand, the expression of FN1-ARC-NGFR-BDNF genes in mice with PCOS, swimming training, and soy supplement consumption significantly increased compared to the PCOS group. Simultaneous administration of swimming training and soy supplement consumption significantly increased LH concentration (p<0.001) and expression of FN1-ARC-NGFR-BDNF genes (p<0.05).
Conclusion: This study showed that combining swimming training and soy extract consumption can enhance neurogenesis in a PCOS model and improve cognitive symptoms. Our findings confirm that this combination not only enhances the function of the nervous system but also contributes to overall health improvement through hormonal regulation. These results provide a new avenue for complementary therapies in the management of PCOS.
Afshin Khaman Hatami, Kamal Azizbeigi, Zaher Etemad, Parvin Farzanegi,
Volume 25, Issue 5 (12-2025)
Abstract
Background: Aging is associated with Sarcopenia as well as oxidative stress (OS) caused by Ferroptosis. The aim of the present study was to investigate the effect of aerobic exercise training (AT) on OS caused by ferroptosis in sarcopenia model mice.
Methods: Twenty-one C57BL/6 mice (16-24 wks. age) sarcopenia model with an average weight (25-35 g), and 21 healthy mice (6-7 weeks age) were randomly assigned to the following (1) healthy-young control (HYC; n= 7), (2) aerobic training-young (ATY; n= 7), (3) healthy-old control (HOC; n= 7), (4) old control-sarcopenia model (OCS; n= 7), (5) aerobic training-healthy-old (ATHO; n= 7), (6) healthy-old sarcopenia model (HOS= 7). The intervention group underwent AT for eight weeks, five sessions per week at an intensity of 60-80% of aerobic capacity (VO2max). The expression of the glutathione peroxidase (GPX-4) and superoxide dismutase (SOD) genes was measured using Real Time PCR. The Malondialdehyde (MDA) and Fe²⁺concentration in the gastrocnemius muscle was also measured.
Results: It was observed that the enzymes gene expression of SOD and GPX-4 in the (OSC) was significantly decreased compared to the (HOC) (P= 0.001, P= 0.002, respectively), and the MDA and Fe²⁺ was significantly increased (P= 0.001; P= 0.002, respectively). Also, the of SOD and GPX-4 gene expression of enzymes in the ATY, ATHO was significantly increased compared to the HYC, and HOS (P= 0.001; P= 0.002, respectively), and the concentration of MDA and Fe²⁺ was significantly decreased (P= 0.001; P= 0.002, respectively).
Conclusion: Finally, it can be said that aerobic training reduces oxidative stress caused by ferroptosis in Sarcopenia by increasing the enzymes GPX and SOD gene expression and reducing the concentration of MDA and Fe²⁺.
