Background: The rs1800871 and rs1800872 polymorphisms of interleukin 10 (IL-10) gene has been indicated to be associated with breast cancer (BC) risk, but study results are still debatable. To derive a more precise evaluation, we performed a comprehensive meta-analysis. Methods: Multiple electronic databases were searched to identify studies assessing the IL-10 rs1800871 and rs1800872 polymorphisms with BC risk. Results: A total of 21 case-control studies with 6054 cases and 6355 controls were included in this met-analysis. There was a significant association between the rs1800871 polymorphism and BC risk (CT vs. TT: OR= 1.17, 95% CI 1.01-1.35, p=0.02; and CC+CT vs. TT: OR= 1.29, 95% CI 1.00-1.66, p=0.04). Moreover, increased BC risks were also associated with the rs1800872 polymorphism (C vs. A: OR= 1.29, 95% CI 1.04-1.60, p=0.01; CC vs. AA: OR= 1.54, 95% CI 1.03-2.30, p=0.03; CC+CA vs. AA: OR= 1.43, 95% CI 1.01-2.01, p=0.03; and CC vs. CA+AA: OR= 1.23, 95% CI 1.01-1.51, p=0.04). A pooling of the studies was also conducted by ethnicity, but failed to show an association of IL-10 rs1800871 and rs1800872 polymorphism with BC risk in Asians and Caucasians. Conclusions: Our results are inconsistent with previous meta-analysis suggests that IL-10 rs1800871 and rs1800872 polymorphisms might contribute to BC susceptibility in overall population, but not by ethnicity.

Background:In the recent years, hepatitis B virus (HBV) infection has been considered as a risk factor for gastric cancer, but further studies are required to confirm these claim. The present study was aimed to evaluate the correlation between gastric pathology (precancerous and cancerous conditions) with HBV infection in Helicobacter pylori (H. pylori) positive or negative patients. Methods:In this cross-sectional study, 728 patients under endoscopy examination in Yazd Shaheed Sadoughi Hospital between 2017 and 2018 were participated. Histopathological analysis was performed on gastric specimens. Hepatitis B surface antigen (HBsAg) in sera was detected by the enzyme-linked immunosorbent assay (ELISA). The relationship between gastric pathology and HBV infection were explored by logistic regression analysis. Results:Of 728 patients, HBsAg and H. pylori infection were detected in 83 and 408 patients, respectively. Sixty nine patients were co-infected with H. pylori/HBV. H. pylori infection detected in patients with HbsAg positive significantly more than those were negative for HbsAg (p=0.029). None of HBV/H. pylori co-infected patients did not have normal gastric tissue. A significant difference was seen in histopathology of gastric tissue between HBsAg positive patients with and without H. pylori infection (p<0.0001). The HBsAg was associated with histopathology of gastric (OR=21.56, 95℅CI=7.070-65.741, p<0.001) and as a risk factor for gastritis (OR=12.457, 95℅CI= 3.007-51.614, P=0.001) but no cancer (OR=2.127, 95℅CI=0.242-18.704, P=0.496).Conclusion:The HBV infection alone is associated with some precancerous lesions but is not correlated with gastric cancer. It can increase development of premalignant conditions and carcinoma significantly in H. pylori positive patients.

Background:Bacterial bloodstream infections are one of the most common complications in cancer patients under treatment. Bacteremia in these patients is a medical crisis that needs antibiotic treatment. The aim of this study was to determine bacterial spectrum and antimicrobial resistance pattern in febrile neutropenic cancer patients.Methods:In this prospective study, 212 cancer patients with febrile neutropenia who were referred to Shahid Sadoughi hospital in Yazd from 2012 to 2015 were participated. Bacterial pathogens isolated by the BACTEC media and antimicrobial susceptibility tests performed according to Clinical and Laboratory Standards Institute (CLSI) guidelines.Results:The mean age of patients was 43.5 ± 24.98 years old. Out of 212 participants, 62.3℅ (132/212) were suffering from hematologic malignancies, and 37.7℅ (80/212) had solid tumors. Gram-negative bacteria were the predominant microorganisms (84.9℅). E.coli was the most frequently isolated pathogen (38.68 %), followed by Klebsiella (14.15℅) and Acinetobacter species (11.32℅). In addition, Staphylococcus epidermidis was the most common isolated Gram-positive bacteria (8.5℅). Gram-negative bacteria were susceptible to ciprofloxacin with a response range of 53.7% to 100%. The majority of E.coli isolates were sensitive to ceftazidime (87.8℅) and were resistance to Co-trimoxazole (15.8℅). Klebsiella isolates were 100% susceptible to cephalosporins, meropenem and imipenem.Conclusion:The majority of bacterial pathogens were resistance to various antibiotics. Judicious use of antibiotic therapy can prevent the emergence and spread of antibiotic-resistant Gram-negative bacteria.

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Background:Some studies have investigated the association of GSTM1, GSTT1, GSTM3, and GSTP1 polymorphisms with susceptibility to osteosarcoma; however, these studies results are inconsistent and inconclusive. In order to drive a more precise estimation, the present case-control study and meta-analysis was performed to investigate association of GSTM1, GSTT1, GSTM3, and GSTP1 polymorphisms with osteosarcoma.Methods:Eligible articles were identified by a search of several electronic databases for the period up to May 5, 2018. Odds ratios were pooled using either fixed-effects or random effects models.Results:Finally, a total of 24 case-control studies with 2,405 osteosarcoma cases and 3,293 controls were included in the present meta-analysis. Overall, significantly increased osteosarcoma risk was found when all studies were pooled into the meta-analysis of GSTT1 (Null vs. Present: OR= 1.247 95% CI 1.020-1.524, P= 0.031) and GSTP1 polymorphism (B vs. A: OR= 8.899 95% CI 2.722-29.094, P≤0.001). In the stratified, significantly increased osteosarcoma risk was observed for GSTT1 polymorphism among Asians (Null vs. Present: OR= 1.300 95% CI 1.034-1.635, P= 0.025), but not among Caucasians.Conclusions:This meta-analysis demonstrated that GSTP1 and GSTT1 null genotype are associated with the risk of osteosarcoma. Future large well-designed epidemiological studies are warranted to validate our results.