A Comparative Analysis of Safety and Efficacy of Bariatric Surgery During the COVID-19 Pandemic and Pre-Pandemic Period: Insights from the Tehran Obesity Treatment Study.

Background: The COVID-19 pandemic has raised global health concerns and posed challenges for postoperative follow-up care for patients undergoing bariatric surgery due to social distancing rules.

Methods: This was a cohort study on patients with morbid obesity who underwent bariatric surgery and had been enrolled in Tehran Obesity Treatment Study. Patients who had surgery between March 2020 and March 2021 were classified as those undergoing the procedure amid the COVID-19 pandemic, while those who had surgery between March 2017 and March 2018 were categorized as the pre-pandemic group.

Effects of Photobiomodulation With Two Wavelengths of 630 and 810 nm on Diabetic Neuropathy.

Diabetic peripheral neuropathy (DPN) is the most common complication of diabetes patients. Among different therapeutic approaches for treating DPN, low-level laser therapy (LLLT) or photobiomodulation (PBM) is a new promising non-invasive technique. This study aims to evaluate the effect of visible and infra-red LLLT on DPN.

Longitudinal Associations Between Gene Variants and Thyroid Peroxidase Antibody Seroconversion in a Population-Based Study: Tehran Thyroid Study.

Autoimmune thyroid diseases (AITD) are usually accompanied by anti-thyroid antibodies which can serve as early predictive markers. This study was designed to investigate the relationship between thyroid peroxidase () gene variants and the presence of TPOAb and to evaluate the effect of environmental factors associated with seroconversion from TPOAb-negative to TPOAb-positive. Participants from phases 1 and 2 of the Tehran Thyroid Study in ( = 5327, ≥20 years) were evaluated in terms of TPOAb positivity, and its relationship with 53 single nucleotide polymorphisms (SNPs) from within the gene (cross-sectional approach).

Osteogenic Differentiation Effect of BMP-9 with Phenamil and Simvastatin on Intact Human Amniotic Epithelial Stem Cells.

Background: Background: Bone tissue engineering has shown to be a promising strategy for repairing bone defects without causing harmful side effects to the patient. Three main building blocks of tissue engineering, including seeding cells, scaffold, and signaling molecules, are required for adequate bone regeneration. The human amniotic membrane (hAM) is the innermost of the placental membranes.

Barriers Toward the National Program for Prevention and Control of Diabetes in Iran: A Qualitative Exploration.

Background: Despite the achievements of the national program for the prevention and control of diabetes (NPPCD) over the past two decades, the available evidence indicates a high prevalence of this disease in Iran. This qualitative study aims to investigate barriers to the NPPCD by pursuing the perspectives of relevant policy-makers, planners, and healthcare workers.

Methods: A grounded theory approach was used to analyze participants' perceptions and experiences.

Relationship of musculoskeletal diseases with microvascular and macrovascular complications in patients with diabetes in Iran.

Background And Aims: Musculoskeletal manifestations (carpal tunnel syndrome, Dupuytren's contracture, etc.) may occur in poorly controlled and longstanding diabetes. In this study, we evaluated the relationship of musculoskeletal diseases with microvascular and macrovascular complicationsin patients with diabetes.

Association between vitamin D level and prognostic factors among patients infected with SARS-CoV-2.

Objectives: The present study aimed to evaluate the presence of any relationship between vitamin D and prognostic factors among patients infected with SARS-CoV-2.

Methods: This retrospective cross-sectional study was conducted among patients admitted from March to August 2020 in a referral hospital, Tehran, Iran. All patients aged 18-65 who had not any comorbidity participated in the study.

Supplementation with vitamin D and insulin homeostasis in healthy overweight and obese adults: A randomized clinical trial.

Introduction: Hypovitaminosis D which is a frequent problem in overweight and obese individuals, seems to interfere with cells responsible for control of glycemic status. Therefore, the current research intended to study the impact of supplementation with vitamin D on insulin homeostasis among healthy obese and overweight individuals.

Methods: The current study was conducted among obese or overweight individuals who had hypovitaminosis D.

Hypoglycemia and cognitive function in diabetic patients.

Aims: Hypoglycemia can be considered the most common complication of Diabetes Mellitus treatment. So far, controversial studies have been carried out to examine the impacts of hypoglycemia on the cognitive function.

Methods: This study was conducted as case-control.

Lipid Peroxidation and Antioxidant Status in Patients with Medullary Thyroid Carcinoma: A Case-Control Study.

Introduction: Oxidative stress or oxidant/antioxidant imbalance has a crucial role in the pathogenesis of some diseases like cancer. Medullary thyroid carcinoma (MTC) originates in the thyroid parafollicular cells and includes 3-4% of the malignant neoplasms that have an effect on this gland. The aetiology of MTC has not been clarified.