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Association of 2-methoxyestradiol levels with the occurrence and development of endometrial cancer in humans
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作者 Huanhuan Zhao Junyu Li +1 位作者 Yan Liu Li Li 《Oncology and Translational Medicine》 CAS 2022年第4期191-195,共5页
Objective The aim of the study was to determine the association of urinary levels of estradiol(E_(2))and 2-methoxyestradiol(2-MeOE_(2))with the occurrence and development of endometrial cancer.Methods In this case-con... Objective The aim of the study was to determine the association of urinary levels of estradiol(E_(2))and 2-methoxyestradiol(2-MeOE_(2))with the occurrence and development of endometrial cancer.Methods In this case-control study,24-h urine specimens were collected from 28 postmenopausal patients with endometrial cancer and 28 postmenopausal healthy female controls.The concentration of 2-MeOE_(2) was determined using liquid chromatography-mass spectrometry with hollow fiber liquid-phase microextraction.The concentration of E_(2) was determined using an enzyme-linked immunosorbent assay.Results Estrogen levels were different between the patients with endometrial cancer and controls.The relative quantity of E_(2) in the case group was higher than that in the control group(P<0.05),whereas that of 2-MeOE_(2) was lower in the case group than that in the control group(P<0.05).The ratio of E_(2)-to-2-MeOE_(2) in the case group was significantly higher than that in the control group(P<0.05).Conclusion The results of this study indicate an imbalance of estrogen metabolites in endometrial carcinogenesis.Reduced 2-MeOE_(2) levels and elevated E_(2)-to-2-MeOE_(2) ratio may be used as potential biomarkers for the risk assessment of estrogen-induced endometrial cancer. 展开更多
关键词 endometrial cancer 2-methoxyestradiol(2-MeOE_(2)) estradiol(E_(2)) URINE high-performance liquid chromatography-mass spectrometry(HPLC-MS)
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Calcium potentiates the effect of estradiol on PGF2α production in the bovine endometrium 被引量:2
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作者 Claudia Maria Bertan Membrive Pauline Martins da Cunha +1 位作者 Flávio Vieira Meirelles Mario Binelli 《Journal of Animal Science and Biotechnology》 SCIE CAS CSCD 2015年第2期215-221,共7页
Background: Estradiol (E2) is required for luteolysis in cows and its injection stimulates prostaglandin F2α (PGF2α) release. The main goal of our study was to investigate the ability of endometrial explants an... Background: Estradiol (E2) is required for luteolysis in cows and its injection stimulates prostaglandin F2α (PGF2α) release. The main goal of our study was to investigate the ability of endometrial explants and cells treated with E2 and the calcium ionophore (CI) A23187 to synthesize PGF2α. Results: Treatment with E2 in vivo resulted in a 48.4% increase of PGF2α production by endometrial explants treated in vitro with A23187. Production of PGF20 was better stimulated with A23187 at concentrations of 10^-6 and 10^-5 mol/L compared with other concentrations used. The concentration of PGF2α for untreated bovine endometrial cell cultures was 33.1 pg/mL, while for cultures treated with E2, A23187, or a combination of E2 and A23187, the PGF2α concentration was 32.5, 92.4 and 145.6 pg/mL, respectively. Conclusions: Treatment with A23187 tended to stimulate PGF20 production. In the presence of E2, A23187 significantly stimulated PGF20 synthesis. It appears that A23187 potentiates the effects of E2 with respect to synthesis of endometrial PGF2α in cattle. 展开更多
关键词 Animal reproduction Cattle estradiol LUTEOLYSIS PGF2α synthesis Reproductive physioloqy
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17β-Estradiol Regulates Cultured Immature Boar Sertoli Cell Proliferation via the cAMP-ERK1/2 Pathway and the Estrogen Receptor β 被引量:13
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作者 WANG Xian-zhong ZHAO Bo-chuan ZHOU Yu-lan ZHOU Yin-tao MA Kai-ge ZHANG Jia-hua 《Agricultural Sciences in China》 CAS CSCD 2010年第8期1201-1210,共10页
Estrogen plays an important role in regulating Sertoli cell number in the testis. The objective of the study was to identify whether 17β-estradiol affected the proliferation of cultured, immature boar Sertoli cells v... Estrogen plays an important role in regulating Sertoli cell number in the testis. The objective of the study was to identify whether 17β-estradiol affected the proliferation of cultured, immature boar Sertoli cells via the estrogen receptor β (ERβ) and the cAMP-extracellular signal-regulated kinase (ERK1/2) pathway. Low levels (10-10-10-8 mol L-1) of 17β-estradiol increased cell number, but high levels (10-7-10-6 mol L-1) decreased it (P〈0.05). Sertoli cell number began to recover for an additional 24 h in the medium without 17β-estradiol (10-6 mol L-l) (P〉0.05). The effects of 17β-estradiol (10-9 mol L-1) peaked at the first 24 h (P〈0.05). 17β-estradiol activated ERK1/2 from 5 min to 24 h, but the activiy of ERK1/2 began to decrease after 4 h. Both PD98059 and U0126, two ERK inhibitors, blocked cell division (P〈0.05). 17β-estradiol (10-10-10-6 mol L-1) dose-dependently increased cAMP production (P 〈 0.05), and both 17β-estradiol (10-9 mol L-1) and forskolin, which increases cAMP levels, induced cell proliferation and activated ERK1/2 (P〈 0.05). Rp-cAMP, an antagonist of cAMP, blocked this 17β-estradiol activity (P〈 0.05). Two estrogen receptor antagonists, ICI 182780 and ERβ antagonist (ERβAnt), reduced Sertoli cell number, cAMP production and ERK1/2 activation (P〈 0.05), but ERaAnt did not (P〉 0.05). Therefore, 17β- estradiol mainly promotes pig Sertoli cell proliferation via ERβ to induce cAMP production and ERK activation to promote cell proliferation. 展开更多
关键词 17Β-estradiol Sertoli cell cell proliferation estrogen receptor ERK1/2
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Angiopoietin-1 mRNA and Bcl-2 expression following estradiol treatment in ovariectomized rats with focal cerebral ischemia/reperfusion injury
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作者 Rong Gu Minghua Liu +2 位作者 Yonghong Wang Yuanda Zhou Haixia He 《Neural Regeneration Research》 SCIE CAS CSCD 2009年第10期780-785,共6页
BACKGROUND: Estrogen has been clinically demonstrated to attenuate ischemic brain injury. However, the precise mechanisms remain controversial. OBJECTIVE: To investigate the effects of estradiol on angiopoietin-1 mR... BACKGROUND: Estrogen has been clinically demonstrated to attenuate ischemic brain injury. However, the precise mechanisms remain controversial. OBJECTIVE: To investigate the effects of estradiol on angiopoietin-1 mRNA and Bcl-2 expression, as well as apoptosis and cerebral blood flow, in ovadectomized rats with focal cerebral ischemia following reperfusion. DESIGN, TIME AND SETTING: Randomized, controlled, animal experiment. The study was performed at the Central Laboratory, Chongqing Medical University from September to December 2005. MATERIALS: Estradiol benzoate was purchased from Shanghai Ninth Pharmaceutical Factory; corn oil was purchased from Walmart Supercenter; TUNEL kit, rabbit anti-rat Bcl-2 polyclonal antibody, and biotin-labeled goat anti-rabbit antibody were purchased from Wuhan Boster, China. METHODS: Healthy, female, 6-month-old Wistar rats-wild-type and estrogen alpha receptor gene knockout (ERKO)-were randomly divided into estradiol and control groups with 25 animals in each group. The rats were intramuscularly injected with estradiol benzoate (100 μg/kg per day) at 30 days following bilateral ovariectomy or corn oil (1 mL/kg per day) for seven consecutive days. Following administration, cerebral ischemia/reperfusion models were established using the right middle cerebral artery occlusion (MCAO) method. After 30 minutes of MCAO, estradiol and control groups were separately injected with estradiol benzoate and corn oil with the above-mentioned doses. MAIN OUTCOME MEASURES: Cell apoptosis was determined by TUNEL; angiopoietin-1 mRNA and Bcl-2 gene expression was determined, respectively, by immunohistochemical staining and RT-PCR. In addition, changes in cerebral blood flow were measured by laser Doppler flowmetry. RESULTS: Changes in angiopoietin-1 mRNA and cerebral blood flow in estradiol-treated, wild-type, MCAO rats following ischemia/reperfusion were greater than in control rats (P 〈 0.01 or 0.05). However, no significant difference was observed between estradiol-treated ERKO MCAO rats and control rats. In addition, estradiol-treated wild-type and ERKO MCAO rats exhibited significantly increased Bcl-2 expression (P 〈 0.05) and decreased number of apoptotic cells in brain tissues compared with control groups (P 〈 0.05). CONCLUSION: Estradiol upregulated angiopoietin-1 mRNA and Bcl-2 expression, suggesting that estradiol might be involved in protective mechanisms of cerebral ischemia/reperfusion injury. 展开更多
关键词 estradiol ANGIOPOIETIN apoptosis BCL-2 cerebral ischemia/reperfusion
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Effects of Estradiol on 5-HTsA and 5-HT2c Receptor Immunolabeling in Rat Hippocampus
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作者 Laura Cristina Berumen Marco Antonio Sainchez-Ramos +3 位作者 Martin Garcla-Servin Ataulfo Martinez-Torres Angelina Rodriguez Guadalupe Garcla-Alcocer 《Journal of Life Sciences》 2011年第11期884-889,共6页
Steroid hormones participate in the modulation of serotonergic transmission, including the regulation of synthetic and metabolic enzyme production, as well as receptor and transporter activity. The changes of 5-HT5A a... Steroid hormones participate in the modulation of serotonergic transmission, including the regulation of synthetic and metabolic enzyme production, as well as receptor and transporter activity. The changes of 5-HT5A and 5-HT2c immunolabeling induced by steroids in the hippocampus ofovariectomized rats were studied in this work. Densitometric analysis in rat hippocampi were carried out for adjacent brain coronal immunolabeled sections after treatment with subcutaneous injections of vehicle, estradiol, progesterone or the combination of both steroids in ovariectomized rats. Exposure to estradiol and the combination of estradiol and progesterone significantly reduced the 5-HT5A-like immunosignal in the CA 1 region while progesterone did not induce changes. On the other hand, exposure to the combination of estradiol and progesterone or estradiol alone increased the 5-HT2c immunosignal in the same region. These results indicate that estradiol is involved in the discrete regulation of serotonin receptors 5-HT5A and 5-HT2c in rat hippocampus. 展开更多
关键词 Serotonin receptor 5-HTsA 5-HT2c HIPPOCAMPUS estradiol PROGESTERONE
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Synthesis and Crystal Structure of (Z)-Ethyl-4-(4-methoxy)benzylidene-2-(3,5-dimethoxypheny-tetrahydrofuran-3,3-dicarboxylate
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作者 王甜甜 吕志良 +1 位作者 刘嘉 李科 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2009年第7期803-806,共4页
The title compound (Z)-ethyl-4-(4-methoxy)benzylidene-2-(3,5-dimethoxyphenyl)- tetrahydrofuran-3,3-dicarboxylate has been synthesized, and its crystal structure was characterized by X-ray single-crystal diffract... The title compound (Z)-ethyl-4-(4-methoxy)benzylidene-2-(3,5-dimethoxyphenyl)- tetrahydrofuran-3,3-dicarboxylate has been synthesized, and its crystal structure was characterized by X-ray single-crystal diffraction. The crystal belongs to triclinic, space group P1, with a = 8.140(3), b = 11.966(4), c = 13.771(5)Aα= 67.366(4), β= 85.165(5), γ= 75.806(4)°, V = 1200.1(7) A3, Z = 2, C26H3008, Mr = 470.50, Dc = 1.302 g/cm^3, F(000) = 500,λ(MoKa) = 0.71073 A, μ= 0.096 mm^-1, R = 0.0659 and wR = 0.1841 for 3080 observed reflections (I 〉 2σ(I)). As a key intermediate of HIV-1 integrase inhibitor, the synthesis and structure confirmation of the title compound are important for further studies. 展开更多
关键词 (Z)-ethyl-4- (4-methoxy)benzylidene-2-(3 5-dimethoxyphenyl)-tetrahydrofuran-3- dicarboxylate synthesis crystal structure
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17β-Estradiol Regulates SKP2 Expression in Cultured Immature Boar Sertoli Cells Mainly via Estrogen Receptor β,cAMP-PKA and ERK1/2
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作者 WANG Xian-zhong ZHU Feng-wei +3 位作者 WANG Yong WANG Yi ZHANG Jiao-jiao ZHANG Jia-hua 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2014年第4期827-836,共10页
Estrogen plays an important role in regulating testicular Sertoli cell number. Furthermore, S-phase kinase-associated protein 2 (SKP2) plays a central role in mammalian cell cycle progression. The objective of this ... Estrogen plays an important role in regulating testicular Sertoli cell number. Furthermore, S-phase kinase-associated protein 2 (SKP2) plays a central role in mammalian cell cycle progression. The objective of this study was to determine whether 17β-estradiol can regulate the expression of SKP2, and the Sertoli cell cycle, via estrogen receptor β (ERβ), the cyclic adenosine monophosphate (cAMP)-protein kinase A (PKA) and extracellular signal-regulated kinase (ERK1/2) pathway. When cultured immature boar Sertoli cells were treated with 17β-estradiol, a time-dependent increase in SKP2 mRNA and protein level was observed by real-time PCR and Western blot, and 17β-estradiol activity peaked at 30 min. Treatment with ICI182780 and ERβ antagonist reduced 17β-estradiol-induced expression of SKP2 and proliferating cell nuclear antigen (PCNA), while increasing the protein concentration of p27kip1. However, the effect of ERa antagonist on these parameters was lower than that of ICI 182780 and ERβ. Forskolin had a similar effect as 17β-estradiol on the expression of SKP2, PCNA and p27kip1, Rp-cAMP, H-89 and U0126 treatment reduced 17β-estradiol-induced changes, while H-89 also inhibited ERK1/2 activation. Therefore, 17β-estradiol mainly regulates SKP2 mRNA and protein expression via ERβ-cAMP-PKA and ERK1/2 activation. SKP2 and PCNA expression were positively correlated, while increased SKP2 expression likely resulted in p27kip1 degradation. 展开更多
关键词 17Β-estradiol Sertoli cell SKP2 estrogen receptor CAMP-PKA ERK1/2
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The Danger within:Covid-19 Affinity for ACE2 Receptors in Adipose Tissue and Testes.The Protective Effects of Estradiol,Fitness,and Weight Management
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作者 Xanya Sofra 《Journal of Endocrinology Research》 2020年第1期1-14,共14页
The imminent danger of the Covid-19 pandemic has accelerated research in pharmaceuticals that either target the viral Spike proteins fusion with ACE2 receptors,or the infectious RNA replication that often overwhelms i... The imminent danger of the Covid-19 pandemic has accelerated research in pharmaceuticals that either target the viral Spike proteins fusion with ACE2 receptors,or the infectious RNA replication that often overwhelms immune defences.The scope of this review was to elucidate the main human vulnerabilities to Covid-19,including the accumulation of ACE2 receptors in testes,adipose tissue,thyroid,heart and kidneys that escalate viral affinity in males,the aged,and certain medical conditions,including diabetes,CVD,and pulmonary diseases.Pre-existing inflammation inherent in obesity may exacerbate the“cytokine storm,”a rampaging immune reaction during the course of Covid-19 that is deleterious to the host.We examined the molecular dynamics illustrating the action of new therapeutics necessary for Covid-19 patients;the estradiol advantage hypothesis;alternative therapies including hormone replacement procedures and mesenchymal stem cells;plus preventive and protective interventions.The current perspective also explored the primary components of dysregulated health predisposing individuals to Covid-19,including hormonal imbalance,increased lipids and lipoproteins,thyroid dysfunction,degraded fitness,and age-related testosterone decline accompanied by cortisol increase that provokes stress eating behaviours and weight accumulation.Obesity increases the probability of Covid-19 infection due to its abundance of ACE2 receptors;while physical activity may decrease Covid-19 vulnerability,by reducing fat and increasing muscle mass that manifests a relatively inhibited ACE2 expression.Several weight management solutions feature lasers and radiofrequency which diminish subcutaneous adiposity but do not enhance fitness.A data metanalysis of seven recently published clinical studies on 95 obese individuals,73 males and 22 females with an average BMI of 30.9,demonstrated visceral fat reduction combined with increased skeletal muscle mass.It also revealed a statistically significant decrease in BMI,lipids,lipoproteins,inflammation and toxicity as measured by CRP,Creatinine and Bilirubin respectively,juxtaposed by optimally healthier levels of Cortisol,Testosterone,Free T3,IGF-1,Insulin,and the appetite controlling hormones Leptin and Ghrelin. 展开更多
关键词 Visceral Adipose Tissue ACE2 TESTES Covid-19 estradiol FITNESS Weight management Leptin Free T3 Testosterone BMI BMR VLDL Triglycerides HDL Creatinine Bilirubin Ghrelin Insulin IGF-1 Cortisol CRP Diabetes PREDIABETES HYPERPHAGIA
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2型糖尿病患者唾液雌二醇水平及OHIP-14得分与慢性牙周炎严重程度的相关性研究
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作者 仇彩霞 王祥雨 丁红忠 《检验医学与临床》 CAS 2024年第8期1096-1102,共7页
目的探讨2型糖尿病(T2DM)患者唾液雌二醇(E_(2))水平及口腔健康影响程度量表(OHIP-14)得分与慢性牙周炎(CP)严重程度的相关性。方法选取2022年10月至2023年3月该院收治的188例T2DM患者作为研究对象,根据CP检查结果,将98例T2DM合并CP患... 目的探讨2型糖尿病(T2DM)患者唾液雌二醇(E_(2))水平及口腔健康影响程度量表(OHIP-14)得分与慢性牙周炎(CP)严重程度的相关性。方法选取2022年10月至2023年3月该院收治的188例T2DM患者作为研究对象,根据CP检查结果,将98例T2DM合并CP患者作为DMCP组,90例T2DM无CP患者作为T2DM组,另选取同期在该院口腔科就诊的80例CP无T2DM患者作为CP组。比较3组口腔卫生习惯资料、OHIP-14得分、探诊深度(PD)、附着丧失(AL)、出血指数(BI)、唾液E_(2)、白细胞计数(WBC)、空腹血糖(FBG)、糖化血红蛋白(HbA1c)、甘油三酯(TG)、总胆固醇(TC)、高密度脂蛋白胆固醇、低密度脂蛋白胆固醇(LDL-C)水平。比较DMCP组不同严重程度的CP患者唾液E_(2)水平、OHIP-14得分。采用Spearman相关分析T2DM患者唾液E_(2)水平及OHIP-14得分与CP严重程度的相关性。采用多因素Logistic回归分析T2DM患者发生CP的影响因素。绘制受试者工作特征(ROC)曲线分析唾液E_(2)对T2DM患者发生CP的诊断价值。结果T2DM组唾液E_(2)水平高于DMCP组和CP组,差异均有统计学意义(P<0.05)。CP组HbA1c水平低于T2DM组和DMCP组,且T2DM组低于DMCP组,差异均有统计学意义(P<0.05)。CP组FBG、TC、LDL-C水平均低于T2DM组和DMCP组,差异均有统计学意义(P<0.05);CP组WBC高于T2DM组,差异有统计学意义(P<0.05)。T2DM组洗牙频率≥2次/年患者比例高于CP组和DMCP组,差异均有统计学意义(P<0.05)。CP组PD、AL、BI、OHIP-14得分均高于T2DM组,且T2DM组低于DMCP组,差异均有统计学意义(P<0.05)。DMCP组中,轻度CP患者有21例,中度CP患者有49例,重度CP患者有28例。DMCP组中,轻度CP患者唾液E_(2)水平高于中度和重度CP患者,且中度CP患者高于重度CP患者,差异均有统计学意义(P<0.05)。DMCP组轻度CP患者OHIP-14得分低于中度和重度CP患者,且中度CP患者低于重度CP患者,差异均有统计学意义(P<0.05)。Spearman相关分析结果显示,T2DM患者的CP严重程度与唾液E_(2)水平呈负相关(r=-0.268,P<0.05),与OHIP-14得分呈正相关(r=0.526,P<0.05)。多因素Logistic回归分析结果显示,唾液E_(2)水平降低、OHIP-14得分升高、HbA1c水平升高、AL升高是T2DM患者发生CP的危险因素(P<0.05)。ROC曲线分析结果显示,唾液E_(2)诊断T2DM患者发生CP的曲线下面积为0.875(95%CI:0.827~0.923)。结论唾液E_(2)水平降低,OHIP-14得分升高是T2DM患者发生CP的危险因素,唾液E_(2)、OHIP-14得分对于评估T2DM患者罹患CP的风险具有一定临床意义。 展开更多
关键词 2型糖尿病 慢性牙周炎 唾液 雌二醇 口腔健康影响程度量表得分 口腔健康
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镍染毒大鼠睾丸生精细胞凋亡及其对Bcl-2和Bax表达的影响 被引量:19
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作者 孙应彪 王丽娟 +1 位作者 王俊玲 朱玉真 《毒理学杂志》 CAS CSCD 北大核心 2007年第1期36-39,共4页
目的探讨硫酸镍诱导大鼠睾丸生精细胞凋亡的类型及其对生精细胞Bcl-2、Bax蛋白表达和雌二醇水平的影响。方法健康性成熟Wistar雄性大鼠32只,随机分为4组,正常对照组,硫酸镍1.25、2.5、5.0 mg/kg 3个剂量组。腹腔注射染毒,1次/d,连续30 ... 目的探讨硫酸镍诱导大鼠睾丸生精细胞凋亡的类型及其对生精细胞Bcl-2、Bax蛋白表达和雌二醇水平的影响。方法健康性成熟Wistar雄性大鼠32只,随机分为4组,正常对照组,硫酸镍1.25、2.5、5.0 mg/kg 3个剂量组。腹腔注射染毒,1次/d,连续30 d。采用原位缺口末端标记法(TUNEL)检测睾丸生精细胞凋亡;免疫组化SABC法检测生精细胞Bcl-2和Bax蛋白表达;放射免疫法检测血清雌二醇(E2)水平。结果与对照组比较,各剂量组大鼠睾丸生精细胞凋亡增多(P<0.05),且凋亡细胞主要是生精早期和晚期阶段的精原细胞和精母细胞。各剂量组大鼠生精细胞Bcl-2阳性表达减少而Bax阳性表达增多,且血清E2水平降低(P<0.05)。结论硫酸镍可诱导大鼠睾丸精原细胞和精母细胞凋亡,其机制可能与生精细胞内Bcl-2蛋白表达下调,Bax蛋白表达上调以及雌二醇水平降低有关。 展开更多
关键词 硫酸镍 生精细胞 凋亡 Bcl-2 BAX 雌二醇
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三棱丸抑制大鼠异位子宫内膜芳香化酶及环氧合酶-2表达的研究 被引量:11
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作者 李傲 徐晓玉 +1 位作者 董伟 汪莹 《中国中药杂志》 CAS CSCD 北大核心 2008年第11期1297-1301,共5页
目的:探讨三棱丸(SLW)抑制内异症大鼠异位子宫内膜局部雌激素的生成及其作用机制。方法:采用子宫内膜自体移植法建立大鼠子宫内膜异位症模型,将40只造模造模成功大鼠随机分为5组(n=8):模型对照组,SLW高、中、低剂量组和阿那曲唑组,另设... 目的:探讨三棱丸(SLW)抑制内异症大鼠异位子宫内膜局部雌激素的生成及其作用机制。方法:采用子宫内膜自体移植法建立大鼠子宫内膜异位症模型,将40只造模造模成功大鼠随机分为5组(n=8):模型对照组,SLW高、中、低剂量组和阿那曲唑组,另设正常对照组。分别灌胃给药4周后,免疫组化和western blot方法检测异位内膜组织中细胞色素P450芳香化酶(P450 arom)、环氧合酶-2(COX-2)蛋白的表达,发光免疫分析法及放射免疫分析法分别检测异位内膜组织雌二醇(E2)及前列腺素E2(PGE2)的含量。结果:SLW各剂量组能有效抑制异位内膜组织中P450 arom的表达,降低其表达产物雌二醇的生成水平,与模型对照组比较,差异显著(P<0.01);SLW高剂量组能降低异位子宫内膜环氧合酶-2的表达,其产物前列腺素E2的水平也明显低于模型对照组(P<0.05)。结论:SLW具有良好的抗EMS雌激素生成作用,其作用与抑制P450 arom表达,阻断雌激素生成的正反馈环有关。 展开更多
关键词 细胞色素P450芳香化酶 环氧合酶-2 雌二醇 前列腺素E2 子宫内膜异位症 三棱丸
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高原红细胞增多症患者血清IL-2、IL-6及睾酮、雌二醇的水平及其意义 被引量:5
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作者 牟信兵 薛增军 +2 位作者 李素芝 郑必海 何贵强 《中国病理生理杂志》 CAS CSCD 北大核心 2000年第3期217-217,236,共2页
目的 :探讨IL - 2、IL - 6及睾酮、雌二醇在高原红细胞增多症的发病机制中的作用。方法 :采用放射免疫法检测了 2 0例高红症患者及 2 0名正常人外周血上清中的IL - 2、IL - 6、睾酮、雌二醇水平。结果 :高红症患者血清IL - 6水平显著高... 目的 :探讨IL - 2、IL - 6及睾酮、雌二醇在高原红细胞增多症的发病机制中的作用。方法 :采用放射免疫法检测了 2 0例高红症患者及 2 0名正常人外周血上清中的IL - 2、IL - 6、睾酮、雌二醇水平。结果 :高红症患者血清IL - 6水平显著高于正常对照组 (P <0 0 1) ;而高红症患者血清IL - 2、睾酮及雌二醇水平同对照组相比无显著差异。结论 :IL - 6在高原红细胞增多症的发病过程中可能起一定的作用 ,而IL - 2及性激素在高红症发病中作用不大。 展开更多
关键词 红细胞增多症 睾酮 雌二醇 IL-2 IL-6 高原
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老年女性2型糖尿病患者骨代谢标志物变化研究 被引量:11
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作者 史蕾 庞东岳 +4 位作者 张弘弘 陈小红 唐梅 胡吉 董吉祥 《实用老年医学》 CAS 2012年第2期124-126,130,共4页
目的探讨老年女性2型糖尿病患者骨代谢标志物的特征。方法对我院内分泌科住院44例老年女性2型糖尿病患者(均为绝经后)的骨代谢标志物进行检测。糖尿病患者根据病程分为糖尿病1组(糖尿病病程<10年)及糖尿病2组(糖尿病病程≥10年);根... 目的探讨老年女性2型糖尿病患者骨代谢标志物的特征。方法对我院内分泌科住院44例老年女性2型糖尿病患者(均为绝经后)的骨代谢标志物进行检测。糖尿病患者根据病程分为糖尿病1组(糖尿病病程<10年)及糖尿病2组(糖尿病病程≥10年);根据糖化血红蛋白水平(HbA1c)分为糖尿病3组(HbA1c<8%)及糖尿病4组(HbA1c≥8%),目前临床上建议老年患者HbA1c水平控制在<8%为宜。同时选取我院50例体检健康女性作为对照组。结果 (1)糖尿病组25-羟维生素D3、Ⅰ型前胶原氨基末端(C端)前肽(PICP)明显低于正常对照组,而抗酒石酸碱性磷酸酶(TrACP-5b)较对照组明显升高,且有统计学差异(P<0.05)。(2)糖尿病2组患者血I型前胶原氨基末端(N端)前肽(PINP)和PICP水平明显低于糖尿病1组患者(P<0.05),而TrACP-5b水平高于1组,雌二醇、25-羟维生素D3则无明显统计学差异。(3)糖尿病3组血PINP、PICP明显高于糖尿病4组,TrACP-5b低于4组,差异存在统计学意义(P<0.05)。(4)HbA1c与PINP、PICP和TrACP-5b存在显著相关性,而雌二醇与PINP、PICP、25-羟维生素D3、TrACP-5b无明显相关性。结论 2型糖尿病患者的骨形成降低,而骨吸收增加。这提示糖尿病患者的骨质形成减弱、骨质破坏增加。随着糖尿病病程的延长,患者的骨质形成速率减慢,骨吸收增加。血糖控制不佳会对骨的形成及骨质的吸收产生影响,因而严格的血糖控制可有效延缓骨质疏松进展。 展开更多
关键词 2型糖尿病 骨代谢 雌二醇 糖化血红蛋白
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邻苯二甲酸二(2-乙基已基)酯对人神经母细胞瘤细胞增殖的影响 被引量:7
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作者 朱海涛 肖现民 +2 位作者 郑继翠 周国民 汪洋 《复旦学报(医学版)》 CAS CSCD 北大核心 2009年第4期407-412,共6页
目的探讨环境内分泌干扰物邻苯二甲酸二(2-乙基已基)酯(di-2-ethylhexyl phthalate,DEHP)对人神经母细胞瘤细胞增殖的影响及机制。方法体外培养人神经母细胞瘤SK-N-SH细胞,分为5组:不加干预药物(对照组)、加17β-雌二醇(17β-estradiol... 目的探讨环境内分泌干扰物邻苯二甲酸二(2-乙基已基)酯(di-2-ethylhexyl phthalate,DEHP)对人神经母细胞瘤细胞增殖的影响及机制。方法体外培养人神经母细胞瘤SK-N-SH细胞,分为5组:不加干预药物(对照组)、加17β-雌二醇(17β-estradiol,E2组)、加DEHP(DEHP组)、同时加E2和磷脂酰肌醇3-激酶(phosphatidylinositol-3-kinases,PI3K)抑制剂LY294002(E2+LY294002组)、同时加DEHP和LY294002(DEHP+LY294002组)。检测各组细胞0、2、5d时光吸收度值(absorbance value,AV),5d时DNA增殖指数(proliferation index,PI),凋亡指数(apoptotic index,AI)、Capase-3蛋白、蛋白质丝氨酸苏氨酸激酶(protein-serine-threonine kinase,Akt)以及磷酸化Akt(phosphor-AktSer473,p-AktSer473)蛋白表达。结果E2和DEHP组2、5d时AV值及5d时PI值均较对照组明显增高(P<0.01),而E2+LY294002和DEHP+LY294002组则较E2和DEHP组明显降低(P<0.01),各组AI及Caspase-3蛋白表达无明显变化。5d时p-AktSer473蛋白表达,E2和DEHP组较对照组增加(P<0.01),而E2+LY294002和DEHP+LY294002组则较E2和DEHP组明显减少(P<0.01),各组Akt蛋白表达无明显变化。结论DEHP可促进人神经母细胞瘤SK-N-SH细胞体外增殖,作用与雌激素相仿。该促增殖效应可能通过PI3K/Akt信号通路起作用,与细胞凋亡途径无关。 展开更多
关键词 邻苯二甲酸二(2-乙基已基)酯 雌激素 神经母细胞瘤 PI3K/AKT信号通路
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绝经后2型糖尿病并颈动脉硬化的雌二醇与MMP-9相关性研究 被引量:5
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作者 廖欢 杨美兰 +3 位作者 颜雯 张伟勇 程佳 钟文清 《锦州医科大学学报》 CAS 2017年第3期1-3,共3页
目的探讨绝经后2型糖尿病(T2DM)并颈动脉粥样硬化(颈AS)患者血清雌二醇(E_2)与基质金属蛋白酶-9(MMP-9)的相关性。方法我院2015年1月至12月收治的绝经后T2DM并颈AS患者75例,根据E_2水平分为2组:E_2>40 pg/mL组35例,E_2≤40 pg/mL组40... 目的探讨绝经后2型糖尿病(T2DM)并颈动脉粥样硬化(颈AS)患者血清雌二醇(E_2)与基质金属蛋白酶-9(MMP-9)的相关性。方法我院2015年1月至12月收治的绝经后T2DM并颈AS患者75例,根据E_2水平分为2组:E_2>40 pg/mL组35例,E_2≤40 pg/mL组40例,另设绝经后颈AS且E_2>40 pg/mL的对照组20例。测定血清基质金属蛋白酶-9(MMP-9)、雌二醇。结果 E_2>40 pg/mL组MMP-9水平为(605.33±239.26)μg/L,明显高于对照组(436.39±209.18)μg/L(P<0.05);E_2≤40 pg/mL组MMP-9水平为(795.85±275.86)μg/L,明显高于对照组(P<0.05);E_2≤40pg/mL组MMP-9水平明显高于E_2>40 pg/mL组(P<0.05)。结论绝经后T2DM并颈AS患者MMP-9与E_2水平呈反相关,绝经后颈AS患者合并T2DM测量血清MMP-9明显升高。 展开更多
关键词 基质金属蛋白酶-9 雌二醇 2型糖尿病
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17β-雌二醇和2-甲氧基雌二醇对慢性低氧性肺动脉高压大鼠体内内皮素-1/一氧化氮体系的影响 被引量:13
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作者 王丽 汪佩 +1 位作者 李岩鹏 袁雅冬 《中国循环杂志》 CSCD 北大核心 2016年第5期489-494,共6页
目的:探讨17β-雌二醇(E2)及2-甲氧基雌二醇(2ME)对慢性低氧性肺动脉高压大鼠体内内皮素-1(ET-1)/一氧化氮(NO)体系的影响。方法:雌性SD大鼠48只,按随机数字表法平均分为6组(各组n=8):假手术组、去势组、低氧组、去势+低氧组、去势+低氧... 目的:探讨17β-雌二醇(E2)及2-甲氧基雌二醇(2ME)对慢性低氧性肺动脉高压大鼠体内内皮素-1(ET-1)/一氧化氮(NO)体系的影响。方法:雌性SD大鼠48只,按随机数字表法平均分为6组(各组n=8):假手术组、去势组、低氧组、去势+低氧组、去势+低氧+E2组、去势+低氧+2ME组。去势组行卵巢切除术;非去势组打开腹腔找到卵巢后不做处理直接还纳缝合。术后去势+低氧+E2组皮下注射E2[20μg/(kg·d)],去势+低氧+2ME组皮下注射2ME[240μg/(kg·d)],其他组皮下注射生理盐水(0.1 ml/d)。低氧组大鼠置于低氧箱内饲养,非低氧组大鼠呼吸正常空气。连续饲养8周以建立低氧性肺动脉高压模型。分别测定血清ET-1、NO水平、内皮型一氧化氮合酶(eNOS)活性及肺组织内皮素A受体(ET_AR)、内皮素B受体(ET_BR)、eNOS表达变化。结果:低氧组、去势+低氧组大鼠肺小动脉管壁增厚,管腔变窄明显,平均肺动脉压(mPAP)显著高于假手术组(P均<0.01);E2和2ME干预组大鼠上述形态学及mPAP改变相对较轻。与假手术组相比,去势组和低氧组血清ET-1和肺组织ET_AR mRNA及蛋白水平均明显升高,ET_BR mRNA及蛋白水平明显下降(P均<0.01);去势+低氧组以上指标变化更显著;E2和2ME干预后血清ET-1和肺组织ET_AR表达明显下降,但仍高于假手术组,同时ET_BR表达明显上升,但仍低于假手术组(P均<0.01);且去势+低氧+2ME组血清ET-1水平低于去势+低氧+E2组(P<0.05)。与假手术组相比,去势组肺组织eNOS蛋白水平明显下降(P<0.01);低氧组血清NO水平及肺组织eNOS蛋白水平明显下降(P<0.05或P<0.01);去势+低氧组血清NO水平、eNOS活性及肺组织eNOS mRNA和蛋白水平均明显下降(P均<0.01);去势+低氧+E2组和去势+低氧+2ME组上述指标较去势+低氧组均明显上升(P<0.05或P<0.01),但仍低于假手术组(P均<0.05)。结论:E2及2ME均能显著降低血清ET-1水平,减少肺组织ET_AR表达,增加ET_BR的表达,升高血清NO水平、eNOS活性及肺组织eNOS表达,通过改善ET-1/NO体系平衡部分逆转肺动脉高压。 展开更多
关键词 高血压 肺性 一氧化氮 17Β-雌二醇 2-甲氧基雌二醇 内皮素-1
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环境雌激素辛基酚对人MCF-7细胞凋亡调控基因bcl-2 mRNA表达的影响 被引量:7
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作者 余楠 舒为群 朱毅 《环境与健康杂志》 CAS CSCD 北大核心 2002年第5期358-360,共3页
目的研究具有雌激素活性的环境污染物辛基酚对雌激素受体阳性的乳腺癌细胞MCF_7凋亡调控基因bcl_2mRNA表达的影响及与雌二醇作用的异同。方法分别以不同浓度的17β_雌二醇和辛基酚刺激体外培养的MCF_7细胞12~120h ,用RT_PCR方法测定细... 目的研究具有雌激素活性的环境污染物辛基酚对雌激素受体阳性的乳腺癌细胞MCF_7凋亡调控基因bcl_2mRNA表达的影响及与雌二醇作用的异同。方法分别以不同浓度的17β_雌二醇和辛基酚刺激体外培养的MCF_7细胞12~120h ,用RT_PCR方法测定细胞bcl_2mRNA的表达量。结果17β_雌二醇和辛基酚作用MCF_7细胞24h后bcl_2mRNA表达量显著升高,持续至120h ,较宽浓度范围的辛基酚均可引起bcl_2表达增高 ,以10-6 mol/L作用最强。结论辛基酚具有类似雌二醇的刺激MCF_7细胞bcl_2表达的作用 。 展开更多
关键词 环境雌激素 辛基酚 MCF-7细胞 调控基因 BCL-2MRNA表达 细胞凋亡
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男性2型糖尿病患者体内血清性激素水平测定的临床意义 被引量:19
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作者 陈莹 李静 +1 位作者 王楚媛 单忠艳 《中国医科大学学报》 CAS CSCD 北大核心 2013年第9期808-811,815,共5页
目的探讨血清性激素水平的检测对男性糖尿病患者的病情控制和治疗的指导意义。方法选择2007年11月至2008年2月我院内分泌科男性2型糖尿病住院患者29例。利用化学发光免疫分析方法测定血清睾酮、雌二醇(E2)、胰岛素和C肽,计算睾酮/雌二醇... 目的探讨血清性激素水平的检测对男性糖尿病患者的病情控制和治疗的指导意义。方法选择2007年11月至2008年2月我院内分泌科男性2型糖尿病住院患者29例。利用化学发光免疫分析方法测定血清睾酮、雌二醇(E2)、胰岛素和C肽,计算睾酮/雌二醇(T/E2)和胰岛素抵抗指数(HOMA-IR)。对其特点及与体重指数(BMI)、腰臀比(WHR)、血压、血糖、血脂、血尿酸和糖尿病大血管、微血管并发症之间的关系进行统计学分析。结果 29例患者中仅有1例(3.45%)血清睾酮水平低于正常,有4例(13.79%)超过正常范围,其余24例(82.76%)均在正常范围内,而血清E2的检测结果显示:2例(6.90%)超过正常范围,14例(48.28%)低于正常,仅13例(44.83%)处于正常范围内。具有低E2血症的男性2型糖尿病患者血清睾酮的平均水平及HDL-C浓度显著低于血清E2水平不低者,而前者的WHR、HbA1c和血尿酸水平却明显高于后者;2组患者在年龄、糖尿病病程、伴发高血压病和冠心病及并发糖尿病肾病等方面差异均无统计学意义。结论本研究中50%的2型糖尿病男性患者血清E2水平低于正常范围,但是血清睾酮水平不在正常范围内的不到20%。血清E2水平与更多严重的中心型肥胖、糖代谢异常、血脂及血尿酸等代谢异常有直接或间接的联系,血清E2水平低可能成为男性2型糖尿病患者需要补充雄激素的指征。 展开更多
关键词 性激素 血清睾酮 雌二醇 男性 2型糖尿病 中心型肥胖 血尿酸
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2型糖尿病男性患者性激素水平与体重指数、糖脂代谢及胰岛素抵抗相关性分析 被引量:17
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作者 白小岗 李霞 +1 位作者 贾爱华 李伟 《陕西医学杂志》 CAS 2022年第9期1086-1089,共4页
目的:分析2型糖尿病(T2DM)男性患者性激素水平与体重指数(BMI)、糖脂代谢及胰岛素抵抗的相关性。方法:选取T2DM男性患者80例,根据BMI分别纳入T2DM肥胖组(55例,BMI≥28 kg/m^(2))和T2DM非肥胖组(25例,BMI<28 kg/m^(2)),另选择同时期... 目的:分析2型糖尿病(T2DM)男性患者性激素水平与体重指数(BMI)、糖脂代谢及胰岛素抵抗的相关性。方法:选取T2DM男性患者80例,根据BMI分别纳入T2DM肥胖组(55例,BMI≥28 kg/m^(2))和T2DM非肥胖组(25例,BMI<28 kg/m^(2)),另选择同时期男性体检健康者纳入对照组(50例)。分别比较三组一般资料、性激素指标[睾酮(T)、雌二醇(E_(2))、雌二醇/睾酮比值(E_(2)/T)]、脂代谢指标[低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)、甘油三酯(TG)、总胆固醇(TC)]、糖代谢指标[空腹血糖(FPG)、空腹胰岛素(FINS)、糖化血红蛋白(HbA1c)、胰岛素抵抗指数(HOMA-IR)]。采用Pearson法分析T2DM男性患者性激素水平与BMI、糖脂代谢指标及胰岛素抵抗的相关性。结果:T2DM肥胖组、T2DM非肥胖组、对照组BMI呈递减趋势(均P<0.05)。三组年龄比较差异无统计学意义(P>0.05)。T2DM肥胖组及T2DM非肥胖组T2DM病程比较差异无统计学意义(P>0.05)。T2DM肥胖组、T2DM非肥胖组、对照组血清T水平呈递增趋势,E_(2)和E_(2)/T水平呈递减趋势(均P<0.05)。T2DM肥胖组、T2DM非肥胖组、对照组血清HDL-C水平呈递增趋势,LDL-C水平呈递减趋势(均P<0.05)。T2DM肥胖组TC和TG水平高于其他两组(均P<0.05)。T2DM肥胖组、T2DM非肥胖组、对照组的FPG、FINS、HbA1c、HOMA-IR水平呈递减趋势(均P<0.05)。T2DM男性患者血清T与BMI、LDL-C、FPG、FINS、HbA1c、HOMA-IR呈负相关,与HDL-C呈正相关(均P<0.05);E_(2)和E_(2)/T与BMI、LDL-C、FPG、FINS、HbA1c、HOMA-IR呈正相关,与HDL-C呈负相关(均P<0.05)。结论:T2DM男性患者血清T、E_(2)及E_(2)/T水平与BMI、糖脂代谢紊乱及胰岛素抵抗密切相关。 展开更多
关键词 2型糖尿病 男性 睾酮 雌二醇 糖脂代谢 胰岛素抵抗
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加味三棱丸含药血清对子宫内膜异位症内膜细胞芳香化酶及环氧合酶-2的影响 被引量:6
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作者 李傲 徐晓玉 +2 位作者 王慧 董伟 汪莹 《中国医院药学杂志》 CAS CSCD 北大核心 2008年第9期690-694,共5页
目的:观察子宫肌瘤与子宫内膜异位症(内异症)患者在位内膜芳香化酶(aromatase)和环氧合酶-2(cyclooxygenase-2,COX-2)表达上的差异,探讨加味三棱丸(SLW)含药血清对内异症在位内膜芳香化酶、COX-2表达的影响。方法:Western blot和RT-PCR... 目的:观察子宫肌瘤与子宫内膜异位症(内异症)患者在位内膜芳香化酶(aromatase)和环氧合酶-2(cyclooxygenase-2,COX-2)表达上的差异,探讨加味三棱丸(SLW)含药血清对内异症在位内膜芳香化酶、COX-2表达的影响。方法:Western blot和RT-PCR方法分别检测子宫肌瘤组、给予SLW含药血清前后内异症组芳香化酶、COX-2蛋白和mRNA的表达,发光免疫分析法及放射免疫分析法分别检测上述各组细胞上清中雌二醇及前列腺素E2的含量。结果:以未给药的内异症内膜组为对照,子宫肌瘤组芳香化酶、COX-2 mRNA蛋白的表达,分泌雌二醇及前列腺素E2水平均明显低于对照组,差异有显著性(P<0.05)。SLW5.0,2.5g·kg-1·d-1组芳香化酶、COX-2蛋白和mRNA的表达低于对照组,差异有显著性或极显著性(P<0.05或P<0.01)。SLW1.25g·kg-1·d-1组芳香化酶mRNA和蛋白、COX-2蛋白的表达也明显低于对照组(P<0.01),但COX-2 mRNA的表达与对照组比较差异无显著性(P>0.05)。SLW5.0,2.5,1.25g·kg-1·d-1组分泌的雌二醇和前列腺素E2水平明显低于对照组(P<0.05)。结论:SLW可抑制子宫内膜异位症在位内膜细胞芳香化酶和COX-2的表达,从而降低局部雌激素及前列腺素E2的水平。 展开更多
关键词 子宫内膜异位症 芳香化酶 环氧合酶-2 雌二醇 前列腺素E2 含药血清 加味三棱丸
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