1.
[Effects of moxibustion at Shenshu (BL 23) on level of sex hormones and AMH in sub-health peri-menopausal women].
Shen, J, Shen, M, Li, Z, Zhang, R, Li, X, Ai, B
Zhongguo zhen jiu = Chinese acupuncture & moxibustion. 2017;(4):381-385
Abstract
OBJECTIVE To compare the effects between moxibustion at Shenshu (BL 23) and oral administration of Vitamin E on quality of life and mechanism in sub-health perimenopausal women, aiming to provide clinical evidence of moxibustion for health care of sub-health female. METHODS Sixty participants were randomly divided into a moxibustion group and a medication group, 30 cases in each one. The volunteers in the moxibustion group were treated with mild moxibustion at bilateral Shenshu (BL 23) for 15 min, once a day; five treatments were considered as a course of treatment, and totally 4 courses were given with an interval of 2 days between courses. The volunteers in the medication group were treated with oral administration of soft capsule of Vitamin E, once a day, continuously for 28 days. The scores of quality of life and serum levels of sex hormones, anti-Mullerian hormone (AMH) and inhibin B (INHB) were measured before and after treatment in the two groups. RESULTS ① Compared before treatment, the scores of quality of life in the two groups were both significantly increased after treatment (both P<0.01), which was more superior in the moxibustion group (P<0.05). ② Compared before treatment, the serum levels of estradiol (E2) and progesterone in the moxibustion group were significantly increased after treatment, especially for premenopausal volunteers (both P<0.01). ③ After moxibustion, the serum level of AMH was significantly improved (P<0.01), however, the effect on INHB had no statistical difference (P>0.05). CONCLUSIONS Moxibustion could effectively improve the quality of life in sub-health perimenopausal women, regulate the levels of sex hormones and AMH, improve ovarian reserve function, and delay ovarian aging.
2.
Protective efficacy of vitamins C and E on p,p'-DDT-induced cytotoxicity via the ROS-mediated mitochondrial pathway and NF-κB/FasL pathway.
Jin, X, Song, L, Liu, X, Chen, M, Li, Z, Cheng, L, Ren, H
PloS one. 2014;(12):e113257
Abstract
Dichlorodiphenoxytrichloroethane (DDT) is a known persistent organic pollutant and liver damage toxicant. However, there has been little emphasis on the mechanism underlying liver damage toxicity of DDT and the relevant effective inhibitors. Hence, the present study was conducted to explore the protective effects of vitamin C (VC) and vitamin E (VE) on the cytotoxicity of DDT in HL-7702 cells and elaborate the specific molecular mechanisms. The results demonstrated that p,p'-DDT exposure at over 10 µM depleted cell viability of HL-7702 cells and led to cell apoptotic. p,p'-DDT treatment elevated the level of reactive oxygen species (ROS) generation, induced mitochondrial membrane potential, and released cytochrome c into the cytosol, with subsequent elevations of Bax and p53, along with suppression of Bcl-2. In addition, the activations of caspase-3 and -8 were triggered. Furthermore, p,p'-DDT promoted the expressions of NF-κB and FasL. When the cells were exposed to the NF-κB inhibitor (PDTC), the up-regulated expression of FasL was attenuated. Strikingly, these alterations caused by DDT treatment were prevented or reversed by the addition of VC or VE, and the protective effects of co-treatment with VC and VE were higher than the single supplement with p,p'-DDT. Taken together, these findings provide novel experimental evidences supporting that VC or/and VE could reduce p,p'-DDT-induced cytotoxicity of HL-7702 cells via the ROS-mediated mitochondrial pathway and NF-κB/FasL pathway.
3.
Overlapping photoprotective function of vitamin E and carotenoids in Chlamydomonas.
Li, Z, Keasling, JD, Niyogi, KK
Plant physiology. 2012;(1):313-23
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Abstract
Tocopherols (vitamin E) and carotenoids are the two most abundant groups of lipid-soluble antioxidants in the chloroplast. Carotenoids are well known for their roles in protecting against photooxidative stress, whereas the photoprotective functions of tocopherols have only recently been examined experimentally. In addition, little is known about the functional overlap of carotenoids and tocopherols in vivo. To investigate this possible overlap, Chlamydomonas reinhardtii strains were engineered to overproduce tocopherols by chloroplast transformation with non-codon-optimized and codon-optimized versions of the homogentisate phytyltransferase vitamin E2 (VTE2) from Synechocystis and by nuclear transformation with VTE2 from C. reinhardtii, which resulted in 1.6-fold, 5-fold to 10-fold, and more than 10-fold increases in total tocopherol content, respectively. To test if tocopherol overproduction can compensate for carotenoid deficiency in terms of antioxidant function, the nuclear VTE2 gene from C. reinhardtii was overexpressed in the npq1 lor1 double mutant, which lacks zeaxanthin and lutein. Following transfer to high light, the npq1 lor1 strains that overaccumulated tocopherols showed increased resistance for up to 2 d and higher efficiency of photosystem II, and they were also much more resistant to other oxidative stresses. These results suggest an overlapping functions of tocopherols and carotenoids in protection against photooxidative stress.