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Antioxidant effect of peony seed oil on aging mice
Xiao-Miao Han,Su-Xi Wu,Mei-Fang Wu,Xue-Feng Yang 한국식품과학회 2017 Food Science and Biotechnology Vol.26 No.6
D-galactose was injected into mice of ages 4–5 months, and peony seed oil was administered using an oral gavage to assess its possible anti-aging functions. The content of malondialdehyde (MDA) and the activities of monoamine oxidase (MAO), glutathione peroxidase (GSHPx), and superoxide dismutase (SOD) in the brain and liver of these mice were determined using biochemical kits. The significance of the differences in the content of the components associated with aging and anti-aging among each group was analyzed statistically. The MDA content and activities of MAO in the brain and liver of mice in the peony seed oil group were significantly lower than those in the aging group. The activities of GSH-Px, Cu/Zn-SOD, and Mn-SOD in the brain and liver of mice in the peony seed oil group were very significantly higher than those in the aging group. Peony seed oil was determined to have an obvious anti-aging function.
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Zhi-yao You,Jing Li,Miao-fang Wu,Hui Li,Yanfang Ye,Li-juan Wang,Zhongqiu Lin 대한부인종양학회 2024 Journal of Gynecologic Oncology Vol.35 No.1
Objective: Self-sampled human papillomavirus (HPV) testing is a potential option forcer vical cancer screening, but research is scarce in Cambodia. We evaluated the feasibility,accuracy, and acceptability of self-sampled HPV testing using careHPV. Methods: A cross-sectional study including women aged 20–49 years attending 2 nationalhospitals in the capital city was conducted. Women under went both self-sampling andclinician-sampling of specimens, and were then asked to complete an acceptabilityquestionnaire. The paired samples were analyzed for high-risk HPV by careHPV andgenotyped by polymerase chain reaction (PCR). Results: A total of 375 women were eligible for inclusion. Based on PCR, 78.9% were negativefor HPV in both self and clinician-samples, 9.9% had a complete HPV type match, and 6.1%had all HPV types in clinician-samples also detected in self-samples. In 5.1%, one or more HPVtypes identified in the clinician-samples were missed in self-samples. When using careHPV,the overall agreement between the 2 sampling methods was 95.7% (95% confidence inter val[CI]=95.8–95.6) with good concordance (κ=0.66, 95% CI=0.56–0.76). Nearly 90% of the womenpreferred clinician-sampling over self-sampling, citing greater comfort, ease, and speed. Conclusion: Self-sampled HPV testing using careHPV could be an option for cer vical cancerscreening in Cambodia; however, it requires periodic quality control of handling procedures. In addition, women’s health education regarding the accuracy of self-sampled HPV testingand the importance of follow-up in cases of positive results is needed.
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Zhi-yao You,Hui Li,Miao-fang Wu,Yanfang Ye,Li-juan Wang,Zhongqiu Lin,Jing Li 대한부인종양학회 2024 Journal of Gynecologic Oncology Vol.35 No.1
Objective: To identif y the maximum tolerated dose (MTD) of docetaxel combined with afixed dose of cisplatin (75 mg/m2) delivered as hyperthermic intraperitoneal chemotherapy(HIPEC) in patients with ovarian cancer. Methods: In this phase I trial, a time-to-event Bayesian optimal inter val design was used. Docetaxel was given at a starting dose of 60 mg/m2 and was increased in 5 mg/m2 incrementsuntil the MTD was determined or the maximum dose level of 75 mg/m2 was reached. The dose-limiting toxicity (DLT) rate was set at 25%, with a total sample size of 30 patients. HIPEC wasdelivered immediately following debulking surger y at a target temperature of 43°C for 90 minutes. Results: From August 2022 to November 2022, 30 patients were enrolled. Among thepatients who received a dose of docetaxel ≤65 mg/m2, no DLT was reported. DLTs wereobser ved in one patient who received 70 mg/m2 docetaxel (grade 3 anaemia) and in threepatients who received 75 mg/m2 docetaxel (one case of grade 3 anaemia, one case of grade3 hepatic impairment and one case of grade 4 thrombocytopenia). Patients treated withdocetaxel 75 mg/m2 in combination with cisplatin 75 mg/m2 had an estimated DLT rate of25%, which was the closest to the target DLT rate and was therefore chosen as the MTD. Conclusion: Docetaxel, in combination with a fixed dose of cisplatin (75 mg/m2), can be usedsafely at intraperitoneal doses of 75 mg/m2 in ovarian cancer patients who received HIPEC(43°C, 90 minutes) following debulking surger y. Trial Registration: ClinicalTrials.gov Identifier: NCT05410483
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Ferric Reductase Activity of the ArsH Protein from Acidithiobacillus ferrooxidans
( Mo Hong Yu ),( Qian Chen ),( Juan Du ),( Lin Tang ),( Fang Qin ),( Bo Miao ),( Xue Ling Wu ),( Jia Zeng ) 한국미생물 · 생명공학회 2011 Journal of microbiology and biotechnology Vol.21 No.5
The arsH gene is one of the arsenic resistance system in bacteria and eukaryotes. The ArsH protein was annotated as a NADPH-dependent flavin mononucleotide (FMN) reductase with unknown biological function. Here we report for the first time that the ArsH protein showed high ferric reductase activity. Glu104 was an essential residue for maintaining the stability of the FMN cofactor. The ArsH protein may perform an important role for cytosolic ferric iron assimilation in vivo.
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