Knowledge and attitude of physicians about cupping in Chaharmahal va Bakhtiari province, 2007

چکیده: زمینه و هدف: از جمله روشهای اصلی در طب تکمیلی حجامت است. با توجه به افزایش رویکرد جدید به انجام حجامت، این تحقیق به بررسی آگاهی و نگرش پزشکان استان چهارمحال و بختیاری نسبت به حجامت پرداخته است. روش بررسی: در این مطالعه توصیفی تحلیلی 152 پزشک به روش تصادفی سیستماتیک انتخاب شدند. اطلاعات با استفاده از پرسشنامه خود ساخته که شامل مشخصات دموگرافیک، سوالات آگاهی و نگرش بود جمع آوری و داده ها با استفاده از آزمون های آماری ضریب همبستگی اسپیرمن، t، آزمون تعقیبی دانکن و آنالیز واریانس مورد تجزیه و تحلیل قرار گرفت. یافته ها: از مجموع 152 نفر پزشکان مورد بررسی 78 نفر (3/51) زن و بقیه مرد بودند. میانگین سن پزشکان 6±9/33 سال بود. 16 افراد آگاهی خوب و 18 نمونه ها نگرش بالا (مثبت) نسبت به حجامت داشتند. بین سن، جنس و محل خدمت پزشکان با میزان آگاهی آنان ارتباط آماری معنی داری وجود نداشت. همچنین میزان آگاهی پزشکان عمومی و متخصص در خصوص حجامت با هم فرقی نداشت. بین نگرش نسبت به حجامت با وضعیت استخدامی پزشکان ارتباط معنی داری وجود داشت به گونه ای که پزشکان طرحی نگرش پایین تری نسبت به سایر پزشکان داشتند (001/0

Genetic study of 45 big hearing loss pedigrees and GJB2 gene mutations frequency in Chaharmahal va Bakhtiari province, Iran, 2008

Background and aim: Hearing loss is the most common sensorineural disorder in human. Despite the contribution of several different genes in causing deafness, mutations in the GJB2 gene have been involved in deafness in many populations. This study aims to investigate genetic epidemiology and frequency of GJB2 gene mutations in 45 big deaf pedigrees. Methods: In this genetic epidemiology study we have investigated 45 big deaf pedigrees concerning inheritance patterns, consanguinity and diversity of deafness severity among siblings using data collected by questionnaires and audiograms. We examined also the frequency and profile of GJB2 gene mutations in 45 probands using direct sequencing strategy. Results: Our study revealed 73% of consanguinity in the deaf pedigrees studied. The most common type of first cousins marriage was found between first cousins who were the children of two brothers. We found autosomal recessive and X-linked recessive pattern in 94-97% and 3-6% of the pedigrees studied respectively. Regarding molecular analysis, GJB2 mutations were found in 11% of population studied including 35delG, 167delT, 299-300delAT and 363delC. Conclusion: A high rate of consanguineous marriage determined in this study could raise the rate of autosomal recessive patterns up to 94-97% of the overall pedigree and would be the main cause to prepare the way for congenital deafness. This study revealed a low contribution of GJB2 gene mutations in causing deafness in Chaharmahal va Bakhtiari province

DFNB59 Gene Mutations and its Association with Deafness in Schoolchildren in Kohgilooyeh & Boyerahmad Province

Introduction & Objective: Hearing loss is a common disease affecting millions of people worldwide. Hearing loss can be caused due to genetic or environmental factors or even both. The genetic of hearing defect is highly heterogeneous and more than 100 genes are predicted to cause this disorder in humans. A newly identified gene (DFNB59) has been shown to cause deafness in some populations. Here we report mutation analysis for DFNB59 gene in 88 genetic non-syndromic hearing loss subjects. Materials & Methods: In this descriptive-lab based study which was conducted at the Cellular and Molecular Research Center of Shahrekord University of Medical Sciences, DNA was extracted from the peripheral blood samples using standard phenol chloroform procedure. Mutation analysis for DFNB59 gene was performed using PCR-SSCP/HA protocol. The suspected DFNB59 which was detected as shifted bands on PAGE were then confirmed by direct sequencing strategy. Results: Two DFNB59 polymorphisms including c.793C>G and c.793C>T were detected in 8 and 1 deaf subjects respectively. Conclusion: We conclude that there is no association between DFNB59 mutations and deafness in the studied patients in the region

Screening of three common mtDNA mutations among subjects with autosomal recessive non-syndromic hearing loss in Sistan va Baluchestan province, Iran

Background: Non-syndromic hearing loss may be induced by mutations in both nuclear and mitochondrial genes. Mutations in mtDNA are present in less than 1% of the children with pre-lingual deafness but are more prevalent later. Most of the molecular defects responsible for mitochondrial disorder, associated with hearing loss may be induced by mutations in the 12SrRNA and tRNA genes. This aim of this study was to investigate the frequency of three common mtDNA mutations including A1555G, A3243G and A7445G in a cohort of autosomal recessive non-syndromic hearing loss (ARNSHL) subjects in Sistan va Baluchestan province. Material and Methods: In this descriptive- experimental based study, a total of 110. ARNSHL subjects from Sistan va Baluchestan province were investigated for three common mtDNA mutations using PCR-RFLP procedure. The possible mutations were confirmed by direct sequencing. Results: None of the A1555G and A7445G mutations were detected in this study. However, we found one sample to carry A3243G mutation (0.9%). Moreover abolishing a MTTL1 restriction site close to A3243G mutation revealed a G3316A allelic variant in 0.9% of patients studied. Conclusion: This study showed that mtDNA mutations are responsible for less than 1% of pre-lingual ARNSHL associated subjects. The present study will improve the genetic counseling of hearing impaired patients in Sistan va Baluchestan province, Iran

DFNB59 Gene Mutation Screening Using PCR-SSCP/HA Technique in Non-syndromic Genetic Hearing Loss in Bushehr Province

Background: Hearing impairment (HI) is the most prevalent Neurosensory disorder which is heterogenous and can also occur due to environmental causes. The majority of hearing deficiencies are of genetic origin affecting about 60% of the HI cases. A novel gene DFNB59 encodes pejvakin has been recently shown to cause deafness. This study aims to determine the frequency of DFNB59 gene mutations in coding region the gene in Bushehr province. Methods: In this descriptive experimental study, we investigated the presence of DFNB59

DFNB59 gene mutations screening in non syndromic deaf subjects in Chaharmahal va Bakhtiari province

زمینه و هدف: وقوع ناشنوایی پیش زبانی حدود 1 در 1000 تولد است که بیش از 60 موارد آن ارثی هستند. ناشنوایی اختلالی هتروژن محسوب می شود و ممکن است به علل محیطی، ژنتیکی یا هر دو رخ دهد. اخیراً جهش های ژن DFNB59 که رمز کننده پروتئین پژواکین است به عنوان عامل ناشنوایی نوع عصبی معرفی شده اند. این مطالعه با هدف بررسی نوع و فراوانی جهش های ژن DFNB59 در 100 ناشنوای غیرسندرومی، در استان چهارمحال و بختیاری انجام شد. روش بررسی: در این مطالعه توصیفی- آزمایشگاهی، فراوانی جهش های ژنDFNB59 در کل اگزون های کد کننده این ژن بررسی گردید. DNA از نمونه های خون محیطی به روش استاندارد فنل کلروفرم استخراج شد. وجود جهش های DFNB59 با روش غربالگری /Heteroduplex Analysis (HA) PCR- SSCP بررسی گردید. سپس جهش های مشاهده شده در اگزون های 2 و 4 با استفاده از روش PCR- RFlP اگزون شماره 6 با استفاده ار تکنیک Nested PCR و اگزون شماره 7 به کمک تعیین توالی تایید گردید. یافته ها: در این تحقیق 3 نوع پلی مورفیسم ژنی (793C>T 793C>G و 874G>A) و یک نوع جهش 988delG به ترتیب با فراوانی 7، 5، 2 و 1 شناسایی شد. نتیجه گیری: مطالعه حاضر و تحقیقات قبلی حاکی از نقش اندک جهش های ژن پژواکین در ایجاد ناشنوایی در استان چهارمحال و بختیاری است و نتیجه اینکه از نظر بالینی جهش های ژن DFNB59 اهمیت چندانی در این منطقه ندارند