Noise-induced Hearing Loss: Continuous versus Impact/impulse Noise.

Background: Impact/impulse and continuous noise are two main causes of noise-induced hearing loss (NIHL) in workplaces. The aim of this study was to compare the effects of impulse/impact noise and continuous noise on hearing status.

Methods: In this study, 259 workers referred to the occupational medicine clinic of Shahid Rahnemoun hospital, Yazd, Iran, entered the study and were divided into two groups: with exposure to impact/impulse noise and with exposure to continuous noise.

Effect of Combined Exposure to Noise and Vibration on Hearing.

Aim: This study was conducted to examine the effect(s) of combined exposure to whole-body vibration (WBV) and noise in railway workers.

Methods: In this historical cohort study, train drivers with combined exposure to WBV and impermissible noise as the case group ( = 85) and shunters with just exposure to impermissible noise as the control group ( = 30) were recruited. The hearing threshold at the conventional audiometric frequencies was measured in both the groups, and the standard threshold shift (STS) and hearing threshold shift at higher frequencies were calculated.

High frequency of metabolic syndrome in adult Zoroastrians in Yazd, Iran: a cross-sectional study.

Background: Metabolic syndrome (MS) is a cluster of metabolic disturbances, and its prevalence is increasing worldwide. MS exhibits variations among ethnic groups. Zoroastrianism is an ethnic minority which has maintained its isolation and endogamy up to now.

Increased serum oxidized low-density lipoprotein levels in pregnancies complicated by gestational diabetes mellitus.

Background: Elevated serum levels of oxidized Low-density Lipoprotein (oxLDL) have been found in type 2 and in poorly controlled diabetic patients. Gestational diabetes mellitus (GDM) has common features with type 2 diabetes.

Objective: The aim of our study was to evaluate the serum levels of oxLDL in women with GDM compared to normal pregnant women.

Assessment of clinical diagnostic accuracy compared with pathological diagnosis of basal cell carcinoma.

Background: Basal cell carcinoma (BCC) is the most common type of skin cancer, afflicting light skin more than dark skin people. This malignancy metastasizes rarely and has unique histological properties.

Aims And Objectives: We focused on the accuracy of clinical diagnoses of BCC by specialists.

Effect of vitamin D on HbA1c levels of children and adolescents with diabetes mellitus type 1.

Background: Studies show the relationship between vitamin D deficiency and glucose metabolism disorders. The aim of this study was the evaluation of the effect of vitamin D administration in management of diabetes mellitus type 1 (T1D).

Methods: We evaluated the effect of supplementation with vitamin D on HbA1c levels of children and adolescents with T1D.

Effect of exposure to a mixture of organic solvents on hearing thresholds in petrochemical industry workers.

Introduction: Hearing loss is one of the most common occupational diseases. In most workplaces, workers are exposed to noise and solvents simultaneously, so the potential risk of hearing loss due to solvents may be attributed to noise. In this study we aimed to assess the effect of exposure to mixed aromatic solvents on hearing in the absence of exposure to hazardous noise.

The effect of different doses of vitamin D supplementation on insulin resistance during pregnancy.

Low serum vitamin D levels are correlated with insulin resistance during pregnancy. We have assessed the effects of different doses of vitamin D on insulin resistance during pregnancy. A randomized clinical trial was done on 120 women with a gestational age of less than 12 weeks.

Pulmonary adverse effects of welding fume in automobile assembly welders.

Welding is one of the key components of numerous manufacturing industries, which has potential physical and chemical health hazards. Many components of welding fumes can potentially affect the lung function. This study investigates the effects of welding fumes on lung function and respiratory symptoms among welders of an automobile manufacturing plant in Iran.

Pulmonary effects of spot welding in automobile assembly.

Background: Spot welding is a type of resistance welding in which pieces of metals are pressed together and an electric current is passed through them. Spot welders are at risk of contact with some potentially hazardous agents but there are few studies about the respiratory effects of spot welding.

Aims: Our objective was to study lung function and respiratory symptoms among spot welders and office workers at an automobile assembly factory in Iran.

Effect of vitamin C on blood glucose, serum lipids & serum insulin in type 2 diabetes patients.

Background & Objective: Diabetes mellitus is one of the most common metabolic disorders that causes micro- and macro-vascular complications. Because of additive effects of hyperglycaemia and hyperlipidaemia for cardiovascular diseases, lipid abnormalities should be evaluated in diabetes. As vitamin C is known for its beneficial effects on serum lipids and glycated haemoglobin (HbA1c), we evaluated the effect of different doses of vitamin C on blood glucose, serum lipids and serum insulin in individuals with type 2 diabetes mellitus.