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Mei Hua Gao

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https://www.readbyqxmd.com/read/29022899/transplanted-human-p75-positive-stem-leydig-cells-replace-disrupted-leydig-cells-for-testosterone-production
#1
Min Zhang, Jiancheng Wang, Chunhua Deng, Mei Hua Jiang, Xin Feng, Kai Xia, Weiqiang Li, Xingqiang Lai, Haipeng Xiao, Ren-Shan Ge, Yong Gao, Andy Peng Xiang
Previous studies have demonstrated that rodent stem Leydig cell (SLC) transplantation can partially restore testosterone production in Leydig cell (LC)-disrupted or senescent animal models, which provides a promising approach for the treatment of hypogonadism. Here, we isolated human SLCs prospectively and explored the potential therapeutic benefits of human SLC transplantation for hypogonadism treatment. In adult human testes, p75 neurotrophin receptor positive (p75(+)) cells expressed the known SLC marker nestin, but not the LC lineage marker hydroxysteroid dehydrogenase-3β (HSD3β)...
October 12, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28991531/identification-of-human-cytochrome-p450-and-ugt-enzymes-involved-in-the-metabolism-of-ferulic-acid-a-major-bioactive-component-in-traditional-chinese-medicines
#2
Xiao-Mei Zhuang, Lin Chen, Yan Tan, Hai-Ying Yang, Chuang Lu, Yue Gao, Hua Li
Ferulic acid (FA) is an active component of herbal medicines. One of the best documented activities of FA is its antioxidant property. Moreover, FA exerts antiallergic, anti-inflammatory, and hepatoprotective effects. However, the metabolic pathways of FA in humans remain unclear. To identify whether human CYP or UGT enzymes are involved in the metabolism of FA, reaction phenotyping of FA was conducted using major CYP-selective chemical inhibitors together with individual CYP and UGT Supersomes. The CYP- and/or UGT-mediated metabolism kinetics were examined simultaneously or individually...
September 2017: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/28953624/inflammation-nutrition-scope-predicts-prognosis-of-early-stage-hepatocellular-carcinoma-after-curative-resection
#3
Ying Zhu, Jian-Hua Li, Jing Yang, Xiao-Mei Gao, Hu-Liang Jia, Xin Yang
We developed a novel inflammation-nutrition scope (INS) based on systemic inflammatory response and nutritional status, and explored its prognostic value in hepatocellular carcinoma (HCC), especially for those with early-stage disease.The INS was developed based on a retrospective study of 185 patients with HCC undergoing hepatectomy between 2006 and 2007, and validated in a prospective study of 131 patients enrolled from 2009 to 2010. Prediction accuracy was evaluated with area under the receiver operating characteristic curve (AUCs)...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28952270/-effect-of-clinical-doses-of-realgar-indigo-naturalis-formula-and-large-dose-of-realgar-on-cyp450s-of-rat-liver
#4
Huan-Hua Xu, Mei-Xi Wang, Hong-Ling Tan, Yu-Guang Wang, Xiang-Lin Tang, Cheng-Rong Xiao, Hua Li, Yue Gao, Zeng-Chun Ma
To investigate the effect of clinical dose of Realgar-Indigo Naturais formula (RIF) and large-dose of Realgar on main drug-metabolizing enzymes CYP450s of rat liver, as well as its regulatory effect on mRNA expression. Wistar rats were administrated orally with tested drugs for 14 days. A Cocktail method combined with HPLC-MS/MS was used in the determination of 4 cytochrome P450 isozymes (CYP1A2, CYP2B, CYP3A and CYP2C) in liver of the rats, and the mRNA expression levels of the above subtypes were detected by real-time fluorescent quantitative PCR...
February 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28943032/formaldehyde-inhibits-sexual-behavior-and-expression-of-steroidogenic-enzymes-in-the-testes-of-mice
#5
Zhi-Jun Zang, You-Qiang Fang, Su-Yun Ji, Yong Gao, Yuan-Qiang Zhu, Ting-Ting Xia, Mei-Hua Jiang, Ya-Nan Zhang
BACKGROUND: Formaldehyde, a ubiquitous environmental pollutant, is used extensively and has been proved to impair male reproduction in mammals. However, no trials have explored whether formaldehyde affects sexual function. AIM: To evaluate the effect of long-term formaldehyde exposure on sexual behavior and to investigate the potential mechanism. METHODS: Forty C57BL/6 male mice were randomly allocated to four equally sized groups. Mice were exposed to formaldehyde at a dose of 0 (control), 0...
September 21, 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28940447/comprehensive-survey-of-vitiligo-patients-in-the-northeast-of-china-using-a-predesigned-questionnaire
#6
Zheng Lin, Yaping Tian, Bingxue Bai, Mei Liu, Yan Wu, Bihuan Xiao, Xing-Hua Gao, Hong-Duo Chen
To assess the sociodemographic data and clinical information of outpatients affected by vitiligo in the northeast of China, vitiligo patients or guardians who presented to the clinic were invited to participate in an exploratory questionnaire. The questionnaire consisted of two sections related to vitiligo, including sociodemographic data and clinical information. A total of 983 vitiligo patients answered the questionnaire. The rates of female and male patients were comparable. The investigated patients were mostly young and middle-aged...
September 22, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28918019/dual-tumor-targeting-nanocarrier-system-for-sirna-delivery-based-on-prna-and-modified-chitosan
#7
Lin Li, Xiaoqin Hu, Min Zhang, Siyu Ma, Fanglin Yu, Shiqing Zhao, Nan Liu, Zhiyuan Wang, Yu Wang, Hua Guan, Xiujie Pan, Yue Gao, Yue Zhang, Yan Liu, Yang Yang, Xuemei Tang, Mingyuan Li, Cheng Liu, Zhiping Li, Xingguo Mei
Highly specific and efficient delivery of siRNA is still unsatisfactory. Herein, a dual tumor-targeting siRNA delivery system combining pRNA dimers with chitosan nanoparticles (CNPPs) was designed to improve the specificity and efficiency of siRNA delivery. In this dual delivery system, folate-conjugated and PEGylated chitosan nanoparticles encapsulating pRNA dimers were used as the first class of delivery system and would selectively deliver intact pRNA dimers near or into target cells. pRNA dimers simultaneously carrying siRNA and targeting aptamer, the second class of delivery system, would specifically deliver siRNA into the target cells via aptamer-mediated endocytosis or proper particle size...
September 15, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28881473/the-classic-signalling-and-trans-signalling-of-interleukin-6-are-both-injurious-in-podocyte-under-high-glucose-exposure
#8
Chun-Tao Lei, Hua Su, Chen Ye, Hui Tang, Pan Gao, Cheng Wan, Fang-Fang He, Yu-Mei Wang, Chun Zhang
Interleukin-6 (IL-6) is a multifunctional cytokine that employs IL-6 classic and trans-signalling pathways, and these two signal channels execute different or even opposite effects in certain diseases. As a cardinal event of diabetic kidney disease (DKD), whether the podocyte abnormalities are associated with IL-6 signalling, especially classic or trans-signalling respectively, remains unclear. In this study, we identified that the circulatory IL-6, soluble IL-6R (sIL-6R) and soluble glycoprotein 130 (sgp130) levels are elevated in patients with DKD...
September 7, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28878233/a-chalcone-derivative-reactivates-latent-hiv-1-transcription-through-activating-p-tefb-and-promoting-tat-sec-interaction-on-viral-promoter
#9
Jun Wu, Ming-Tao Ao, Rui Shao, Hui-Ru Wang, Diao Yu, Mei-Juan Fang, Xiang Gao, Zhen Wu, Qiang Zhou, Yu-Hua Xue
The principal barrier to the eradication of HIV/AIDS is the existence of latent viral reservoirs. One strategy to overcome this barrier is to use latency-reversing agents (LRAs) to reactivate the latent proviruses, which can then be eliminated by effective anti-retroviral therapy. Although a number of LRAs have been found to reactivate latent HIV, they have not been used clinically due to high toxicity and poor efficacy. In this study, we report the identification of a chalcone analogue called Amt-87 that can significantly reactivate the transcription of latent HIV provirses and act synergistically with known LRAs such as prostratin and JQ1 to reverse latency...
September 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28835711/development-of-a-versatile-and-conventional-technique-for-gene-disruption-in-filamentous-fungi-based-on-crispr-cas9-technology
#10
Yan-Mei Zheng, Fu-Long Lin, Hao Gao, Gen Zou, Jiang-Wei Zhang, Gao-Qian Wang, Guo-Dong Chen, Zhi-Hua Zhou, Xin-Sheng Yao, Dan Hu
Filamentous fungi represent an invaluable source of pharmaceutically active compounds. The development of versatile methods to genetically manipulate filamentous fungi is of great value for improving the low yields of bioactive metabolites and expanding chemical diversity. The CRISPR-Cas9-based system has become a common platform for genome editing in a variety of organisms. However, recent application of this technology in filamentous fungi is limited to model strains, a versatile method for efficient gene disruption in different fungi is lacking...
August 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821565/down-regulation-of-xiap-enhances-the-radiosensitivity-of-esophageal-cancer-cells-in-vivo-and-in-vitro
#11
Xin Wen, Xin-Rui Han, Shao-Hua Fan, Zi-Feng Zhang, Lu Chen, Gao Yi, Dong-Mei Wu, Jun Lu, Yuan-Lin Zheng
The study investigated the effects of X-chromosome-linked inhibitor of apoptosis (XIAP) gene silencing on the radiosensitivity of esophageal cancer (EC) cells. Western blotting was used to select EC cell lines with XIAP overexpression. Selected EC9706 and KYSE30 cell lines were both divided into four groups: the blank control group, the negative control (NC) group (transfected with pBSHH1), the siRNA-enhanced group (transfected with pBSHH1-XIAP1-siRNA), and the siRNA-decreased group (transfected with pBSHH1-XIAP2-siRNA)...
October 31, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28821253/evidence-based-anti-osteoporosis-effects-of-periplaneta-americana-l-on-osteoblasts-osteoclasts-vascular-endothelial-cells-and-bone-marrow-derived-mesenchymal-stem-cells
#12
Yan-Fen Huang, Long-Jian Li, Si-Qian Gao, Yang Chu, Jie Niu, Fu-Neng Geng, Yong-Mei Shen, Li-Hua Peng
BACKGROUND: Kangfuxin (KFX) is the ethanol extract of Periplaneta americana L, which has been widely used in the Traditional Chinese Medicine for the repair and regeneration of injured organ and tissues with long history. This study is to investigate the influence of KFX in the various cellular activities and evaluate the anti-osteoporosis potential of KFX. METHODS: The influence of the KFX in the cellular activities, including: 1) migration, osteocalcin secretion of osteoblasts; 2) apoptosis of osteoclasts; 3) migration and tube formation of human umbilical vein endothelial cell (HUVEC); and 4) proliferation, cell cycle regulation and migration of bone marrow mesenchymal stem cells (BMSCs), were investigated systematically...
August 18, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28816569/effect-of-cyclic-uniaxial-compressive-stress-on-human-dental-pulp-cells-in-vitro
#13
Hui Yang, Yi-Xuan Shu, Lin-Yan Wang, Wen-Ling Zou, Li-Yang Guo, Mei-Ying Shao, Qian-Hua Gao, Tao Hu
PURPOSE: Teeth are exposed to various forces during functional and parafunctional movements. These processes inevitably affect the dental pulp, and the mechanism of these influences has been the subject of many previous studies using different apparatuses and obtaining different results. In this study, we aimed to investigate the effects of compressive stress on the proliferation and differentiation of human dental pulp cells (hDPCs). MATERIALS AND METHODS: A four-point bending strain system was adopted to apply low-density cyclic uniaxial compressive stress (2000 microstrain, 0...
August 17, 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/28811139/metabonomics-approach-to-assessing-the-metabolism-variation-and-gender-gap-of-drosophila-melanogaster-in-aging-process
#14
Yu-Zhi Zhou, Ming-Liang Yan, Li Gao, Jian-Qin Zhang, Xue-Mei Qin, Xiang Zhang, Guan-Hua Du
Drosophila melanogaster is increasingly used for study aging mechanism and evaluating anti-aging drugs, but the changes of metabolites and differences of metabolites change between male and female during the aging process are not well known. Metabolomics technology, a massive information provider, has promoted the understanding of metabolic profile and overall changes of metabolites in organism. In this study, (1)H NMR based metabonomics was employed to investigate the dynamic changes of metabolites in whole bodies of male and female Drosophila melanogaster at 3, 15, 30, 45days and to research the gender gap of metabolites changes in aging process...
August 12, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28799539/srsf1-promotes-vascular-smooth-muscle-cell-proliferation-through-a-%C3%AE-133p53-egr1-klf5-pathway
#15
Ning Xie, Min Chen, Rilei Dai, Yan Zhang, Hanqing Zhao, Zhiming Song, Lufeng Zhang, Zhenyan Li, Yuanqing Feng, Hua Gao, Li Wang, Ting Zhang, Rui-Ping Xiao, Jianxin Wu, Chun-Mei Cao
Though vascular smooth muscle cell (VSMC) proliferation underlies all cardiovascular hyperplastic disorders, our understanding of the molecular mechanisms responsible for this cellular process is still incomplete. Here we report that SRSF1 (serine/arginine-rich splicing factor 1), an essential splicing factor, promotes VSMC proliferation and injury-induced neointima formation. Vascular injury in vivo and proliferative stimuli in vitro stimulate SRSF1 expression. Mice lacking SRSF1 specifically in SMCs develop less intimal thickening after wire injury...
August 11, 2017: Nature Communications
https://www.readbyqxmd.com/read/28767701/cardiac-directed-expression-of-a-catalytically-inactive-adenylyl-cyclase-6-protects-the-heart-from-sustained-%C3%AE-adrenergic-stimulation
#16
Mei Hua Gao, N Chin Lai, Dimosthenis Giamouridis, Young Chul Kim, Tracy Guo, H Kirk Hammond
OBJECTIVES: Increased expression of adenylyl cyclase type 6 (AC6) has beneficial effects on the heart through cyclic adenosine monophosphate (cAMP)-dependent and cAMP-independent pathways. We previously generated a catalytically inactive mutant of AC6 (AC6mut) that has an attenuated response to β-adrenergic receptor stimulation, and, consequently, exhibits reduced myocardial cAMP generation. In the current study we test the hypothesis that cardiac-directed expression of AC6mut would protect the heart from sustained β-adrenergic receptor stimulation, a condition frequently encountered in patients with heart failure...
2017: PloS One
https://www.readbyqxmd.com/read/28705466/serum-folic-acid-levels-are-associated-with-the-presence-and-severity-of-liver-steatosis-in-chinese-adults
#17
Ming-Feng Xia, Hua Bian, Xiao-Peng Zhu, Hong-Mei Yan, Xin-Xia Chang, Lin-Shan Zhang, Huan-Dong Lin, Xi-Qi Hu, Xin Gao
BACKGROUND & AIMS: Non-alcoholic fatty liver disease (NAFLD) is a common and strong risk factor for cardiovascular disease and hepatocellular carcinoma. The rapid acceleration of the increase in NAFLD prevalence has exceeded the trends observed for obesity, and has been driven by multiple factors. The aim of this study was to investigate the correlation between the serum levels of folic acid, the endogenous source of methyl groups for DNA methylation, and NAFLD in Chinese adults. METHODS: The correlations between the serum folic acid levels and NAFLD were investigated in two independent cohorts of 70 subjects who underwent a liver biopsy and 130 subjects with varying liver fat contents, as measured using proton magnetic resonance spectroscopy ((1)H-MRS)...
June 28, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28692886/synthesis-and-characterization-of-oxidovanadium-complexes-as-enzyme-inhibitors-targeting-dipeptidyl-peptidase-iv
#18
Ming-Jin Xie, Ming-Rong Zhu, Chun-Mei Lu, Yi Jin, Li-Hui Gao, Ling Li, Jie Zhou, Fan-Fang Li, Qi Hua Zhao, Hong-Ke Liu, Peter J Sadler, Carlos Sanchez-Cano
Two oxidovanadium(IV) complexes carrying Schiff base ligands obtained from the condensation of 4,5-dichlorobenzene-1,2-diamine and salicylaldehyde derivatives were synthesised and characterised, including their X-ray crystallographic structures. They were evaluated as dipeptidyl peptidase IV (DPP-IV) inhibitors for the treatment of type 2 diabetes. These compounds were moderate inhibitors of DPP-IV, with IC50 values of ca. 40μM. In vivo tests showed that complexes 1 and 2 could lower significantly the level of glucose in the blood of alloxan-diabetic mice at doses of 22...
June 29, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28679329/autoantibodies-against-%C3%AE-1-adrenergic-receptor-response-to-induction-therapy-with-bortezomib-containing-regimens-for-multiple-myeloma-patients
#19
Wen Gao, Wen-Jia Guo, Dong-Yan Hou, Guang-Zhong Yang, Yin Wu, Yan-Chen Li, Yun Leng, Yu Tang, Lin Xu, Jia-Mei Liu, Hua Wang, Xin Wang, Juan Zhang, Wen-Shu Zhao, Wen-Ming Chen, Lin Zhang
This study aims to investigate the predictive value of pre-chemotherapy β1R-AABs by evaluating the response of newly diagnosed symptomatic multiple myeloma (MM) patients to their treatment with a bortezomib-containing regimen. Forty-five de novo MM patients and 50 normal controls (NCs) were prospectively enrolled in this study. Serum titers of β1R-AABs were detected by ELISA. These 45 MM patients were divided into two groups (positive and negative groups) according to their β1R-AABs. Follow-up examinations were performed on these patients during chemotherapy induction...
July 6, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28670631/cardiac-directed-expression-of-adenylyl-cyclase-catalytic-domain-reverses-cardiac-dysfunction-caused-by-sustained-beta-adrenergic-receptor-stimulation
#20
Mei Hua Gao, N Chin Lai, Dimosthenis Giamouridis, Young Chul Kim, Zhen Tan, Tracy Guo, Wolfgang H Dillmann, Jorge Suarez, H Kirk Hammond
OBJECTIVE: To test the hypothesis that cardiac-directed expression of the cytoplasmic domains of adenylyl cyclase-6 (AC6) would have beneficial effects on the heart. BACKGROUND: Eliminating the two transmembrane domains of AC6 yields a protein with an intact catalytic domain that is disengaged from membrane-associated β-adrenergic receptor stimulation, but with enhanced propensity for intracellular interactions. METHODS: We constructed a peptide of the C1 and C2 segments of AC6 (C1C2), expressed C1C2 in an adenovirus vector and generated transgenic lines with cardiac-directed C1C2 expression, which underwent sustained isoproterenol (Iso) infusion...
December 2016: JACC. Basic to Translational Science
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