Publications by authors named "K el-Zawahry"
Background: Few studies have evaluated facial photoaging by dermoscopy. Only one study has been performed among Egyptians.
Objective: To study and compare the dermoscopic features of facial aging in males and females and to relate these features to clinical criteria.
Testicular torsion, a surgical emergency, could affect the endocrine and exocrine testicular functions. This study demonstrates histopathological and physiological effects of testicular ischemia/perfusion (I/R) injury and the possible protective effects of Ginkgo biloba treatment. Fifty adult male Wistar rats, 180-200 gm, were randomly divided into sham-operated, Gingko biloba supplemented, ischemia only, I/R, and Gingko biloba treated I/R groups.
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- Telomeres protect chromosome stability, while telomerase (hTERT) helps maintain telomere integrity; smoking is linked to telomere shortening, oxidative stress, and potential changes in hTERT activity.
- This study examined hTERT expression in skin biopsies from 20 smokers and 20 non-smokers, using staining techniques to assess differences in expression.
- Results indicated that non-smokers had higher rates of positive hTERT expression in epidermal and dermal layers compared to smokers, with a significant correlation showing that increased smoking (measured in pack years) led to decreased hTERT expression.
A selenium-dependent bacterium, Bacillus sp., failed to grow on selenium-free media. However, it is able to grow at high concentrations of sodium selenite containing media up to 3% (w/v).
View Article and Find Full Text PDFA selenium-dependent Bacillus sp. is able to grow well up to 3% sodium selenite-containing media. The bacterium completely failed to grow on media devoid of selenium.
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