Hasan Ravansalar; Seyyed Mehdi Zargarian; MohammadReza Behrouzikhah; Arash Akaberi
Volume 17, Issue 3 , September and October 2010, , Pages 207-212
Abstract
Background and Purpose: Thyroid autoimmune disease is the most common thyroid disorder in low-iodine intake areas; evaluation of thyroid peroxidase antibodies (TPOAb), anti-Thyoglubolin (TGAb) and anti-microsomal (TMAb) in most patients with hypothyroidism is of significant importance. Therefore, the ...
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Background and Purpose: Thyroid autoimmune disease is the most common thyroid disorder in low-iodine intake areas; evaluation of thyroid peroxidase antibodies (TPOAb), anti-Thyoglubolin (TGAb) and anti-microsomal (TMAb) in most patients with hypothyroidism is of significant importance. Therefore, the present study was conducted to determine the role of anti-thyroid antibodies in patients with hypothyroidism in Sabzevar, Iran. Methods and Materials: This is a cross-sectional descriptive analytical study where 382 subjects with TSH above normal and T3 and T4 below normal were selected through non-probability convenient sampling. Their TSH, TPOAb, TGAb and TMSb were measured through Eliza method. The obtained data were analyzed in SPSS 15 using chi-square, independent t-test and Pearson correlation coefficient, where P
Jerald Larcher; Mahmood Mahmoodi; Farideh Zeini; Hossein Moallaei; Seyyed Mehdi Zargariyan
Volume 15, Issue 3 , September and October 2008, , Pages 169-175
Abstract
Background and Purpose: Keratinolytic fungi (KF) are among the fungi existing in the soil whose enzymatic activity causes the decomposition of keratinized material in the soil; they are also considered as one of the pathogenic factors. The present study was conducted to determine the enzymatic activity ...
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Background and Purpose: Keratinolytic fungi (KF) are among the fungi existing in the soil whose enzymatic activity causes the decomposition of keratinized material in the soil; they are also considered as one of the pathogenic factors. The present study was conducted to determine the enzymatic activity of the KF and to evaluate the effect of climatic conditions on their activity. Methods and Materials: This deh1ive cross-sectional study was conducted on 90 isolates of KF randomly selected from different regions in Iran and other countries in 2004. The samples were cultured in Modified Czaspex-dextrose liquid medium (MCDLM). Their enzymatic activity was measured using Azocazein the general subtilisin of serin proteinase and chromogenic substrates including N-Suc-Ala-Ala-Pro-Phe-ρNA N-Suc-Ala-Ala-Pro-Leu-ρNA and N-Bz- Phe-Val-Arg- ρNA. The obtained data were summarized using two-dimensional tables and were analyzed using non-repeating one-way ANOVA and Tukey test in SPSS. Results: The results indicated that Myriodontium keratinophilum (94.6 u/ml) and Microsporum coockei (81.66 u/ml) had the highest Azocaseinolytic activity and hydrolysed N-Suc-Ala-Ala-Pro-Phe-ρNA N-Bz- Phe-Val-Arg- ρNA and N-Suc-Ala-Ala-Pro-Leu-ρNA respectively. Statistically significant differences were onserved to exist between methods of determining enzymatic activity (P
MR MOHAJERI; R GOLMOHAMMADI; SM ZARGARIAN
Volume 14, Issue 3 , September and October 2007, , Pages 141-146
Abstract
Background and purpose: Genetic damages and dietary habits play important parts in colorectal cancer (CRC). p53 protein, a product of p53 gene, is the most important tumor suppressor.
The rate of p53 mutation and expression has been variously reported across anatomical regions. p53 protein has a short ...
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Background and purpose: Genetic damages and dietary habits play important parts in colorectal cancer (CRC). p53 protein, a product of p53 gene, is the most important tumor suppressor.
The rate of p53 mutation and expression has been variously reported across anatomical regions. p53 protein has a short half-life which tends to increase with mutation and is likely to be traced by immunohistochemistry. This study is intended to determine the p53 protein stability by pathological parameters across different areas in CRC.
Methods and Materials: This descriptive analytical research was conducted on 80 CRC cases admitted to Hospital in Isfahan, Iran from 2003 to 2007. p53 expression was detected by immunohistochemical methods in the samples after fixation, tissue processing and antigen retrieval. The obtained data were analyzed using chi-square.
Results: of the 80 specimens investigated, p53 protein stability was observed in 27 specimens (34%). No significant relationships were observed between p53 protein stability and tumor staging, differentiation and anatomical regions (colon and rectum) but the relationship between protein stability and mutation was significant.
Conclusion: p53 protein stability was observed in many mutated samples. Therefore, p53 protein detection in Cancer cases can be considered an important symptom of mutation signifying the prognosis and progress of cancer.
SM ZARGARIAN; R GOLMOHAMMADI
Volume 14, Issue 1 , March and April 2007, , Pages 7-14
Abstract
Background and purpose: Assessment of genetic changes from a molecular viewpoint is essential for diagnosis, follow-up and treatment. For molecular procedures, DNA extraction is the first step. Therefore, applying economical and easy procedures will be helpful. Pathological specimens are normally fixed ...
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Background and purpose: Assessment of genetic changes from a molecular viewpoint is essential for diagnosis, follow-up and treatment. For molecular procedures, DNA extraction is the first step. Therefore, applying economical and easy procedures will be helpful. Pathological specimens are normally fixed in formalin and paraffin after surgery and it is important to extract quality DNA from specimens. This study is intended to compare Chelex and Phenol / Chloroform methods of DNA extraction in Paraffin-embedded Colorectal Cancer specimens and their effect on PCR-SPSS.
Methods and Materials: This descriptive-analytical study was conducted on 60 colorectal cancer specimens including 10 rectal and 50 various colon specimens. DNA extractions were done by Chelex and Phelex / Chloroform methods and their quality and quantity were measured by spectrophotometer. The P53 gene was amplified using specific primers in a PCR assay and, consequently, electrophoresis was done. The two methods were compared and analyzed by Kappa coefficient.
Results: Out of 60 subjects, 15 were female and 45 male. Their age ranged from 44 to 91 with the mean being 62 years. Quality DNA was extracted from 44 formalin-fixed specimens by Chelex method, and the PCR was positive. However, with the same sample, 32 specimens had suitable PCR assay by Phenol / Chloroform method. Therefore, a significant relationship was observed between the two methods (p