Ultramicroscopy of structures involved in the posterior region of scales in two flathead fishes (Teleostei: Perciformes)

Morphology of structures involved in the posterior region of scales in two flathead fish species viz. Platycephalus indicus and Grammoplites suppositus was studied using ultramicroscopy. The fish individuals were divided into three size groups based on their standard lengths and their scales were removed from four body regions. The microscopic observations indicated that the scales of both species were ctenoid. The posterior margin of all scales was formed by two rows of ctenii. Typically, the shape of the posterior region of scales in P. indicus was crescent, while it was triangular in G. suppositus. The number of ctenii in the scales of P. indicus was minimum 12 and maximum 60, while in G. suppositus it was minimum 6 and maximum 38. Moreover, the results indicated that the number of ctenii was increased during fish development because the smaller fishes have fewer ctenii in their scales than the adults, while, their general morphology has not been changed properly. This developmental change was significantly higher in P. indicus than G. suppositus. The increase of ctenii during fish development allows greater flexibility in movement. In conclusion, modification in the ornamentations of the posterior region has a hydrodynamic function and they are subject to modification during the fish development. The ctenii varying considerably in the number and could be easily counted, therefore, could be used as an appropriate taxonomic character at least in flathead fishes or even other fish groups

Metformin therapy before conception versus throughout the pregnancy and risk of gestational diabetes mellitus in women with polycystic ovary syndrome : a systemic review, meta-analysis and meta-regression

publishedVersio

Effectiveness of antidiabetic agents for treatment of gestational diabetes : A methodological quality assessment of meta-analyses and network meta-analysis

publishedVersio

Diastereoselective Synthesis and Conformation of trans-2;3-Dibenzoyl-1;4-dithiacyclohepta

The reaction of dibenzoylacetylene and propane-1,3-dithiol in the presence of triphenylphosphine leads to diastereoselective synthesis of the mesocyclic dithioether trans-2,3-dibenzoyl- 1,4-dithiacycloheptane in 70 % yield. The results of ab initio calculations at HF/6-31G* level show that the trans isomer is 31.3 kJ mol–1 more stable than the cis geometry

The risk of chronic kidney disease among women with polycystic ovary syndrome : A long‐term population‐based cohort study

acceptedVersio

Risk of endometrial, ovarian, and breast cancers in women with polycystic ovary syndrome: A systematic review and meta-analysis

Background: Although several studies have evaluated the risk of gynecological cancers in women with polycystic ovary syndrome (PCOS), there are controversies regarding it. Objective: This study aimed to investigate the association of PCOS with endometrial, ovarian, and breast cancers. Materials and Methods: PubMed, Scopus, Web of Science, and Google Scholar databases based on MESH terms using the combination of the appropriate keywords were searched to retrieve observational studies on endometrial, ovarian, and breast cancers in PCOS women, published from inception to April 2020. This meta-analysis was performed to determine the pooled odds ratio (OR) of these cancers in women with PCOS. Publication bias was assessed by using Begg’s test. Results: Of 1347 records retrieved by searching the databases, a total of 14 articles were included in the study. Overall, the pooled OR of the composite outcome, including endometrial, ovarian, and breast cancers in women with PCOS was higher than that of women with no PCOS (pooled OR: 1.4, 95% CI: 1.0-1.9). The pooled OR of endometrial (pooled OR: 2.2, 95% CI: 1.03-4.7) and ovarian (pooled OR: 1.3, 95% CI: 1.0-1.8) cancers in women with PCOS was higher than the control group, whereas the pooled OR of breast cancer was not significantly higher than that of the control group. Conclusion: This meta-analysis indicated an increased risk of endometrial and ovarian cancers in women with PCOS. Key words: Polycystic ovary syndrome, Endometrial cancer, Ovarian cancer, Breast cancer