dehydroepiandrosterone

脱氢表雄酮
  • 文章类型: Journal Article
    补充脱氢表雄酮(DHEA)在卵巢储备功能降低(DOR)的不孕妇女中的治疗作用尚不清楚。不同卵巢储备试验(ORTs)的客观评价,如血清抗苗勒管激素(AMH),血清卵泡刺激素(FSH),卵巢储备减少的女性需要窦卵泡计数(AFC)。这是一项在摩苏尔市进行的横断面研究,伊拉克,122名被诊断为DOR的不孕妇女。入组妇女年龄18~45岁,平均年龄29.46±2.64岁。入选妇女的年龄为18至45岁(平均年龄为29.46±2.64岁)。评估DHEA补充剂的影响(25毫克,3次/天,持续12周)跨不同年龄段,这些妇女最初分为三组(18至27岁,28到37岁,且≥38岁)。在AMH中发现了显着差异,FSH,补充DHEA前后的水平和AFC。(AMH:0.64±0.82vs.1.98±1.32,AFC:2.86±0.64vs.5.82±2.42,FSH:12.44±3.85vs.8.12±4.64),AMH结果差异有统计学意义(p<0.001),AFC(p<0.001),和FSH(p<0.001)。补充DHEA改善了登记女性的卵巢储备,这在年轻女性(<38岁)比老年女性(≥38岁)中更为明显。AMH血清水平和AFC值可以认为是最好的,最可靠和重要的OR参数。然而,需要大型随机多中心研究来确认可用的结果和数据.
    The therapeutic role of dehydroepiandrosterone (DHEA) supplementation among infertile women with diminished ovarian reserve (DOR) is still unclear. Objective evaluation of different ovarian reserve tests (ORTs) such as serum anti-Mullerian hormone (AMH), serum follicle stimulating hormone (FSH), and antral follicle count (AFC) in women with diminished ovarian reserve is required. This is a cross-sectional study performed in Mosul city, Iraq, with 122 infertile women who had been diagnosed with DOR. The enrolled women\'s age ranged from 18 to 45 years old (mean age of 29.46 ± 2.64 years). The ages of the enrolled women ranged from 18 to 45 years (mean age of 29.46 ± 2.64 years). To assess the influence of DHEA supplements (25 mg, three times/day for 12 weeks) across different age groups, the women were initially divided into three groups (18 to 27 years old, 28 to 37 years old, and ≥ 38 years old). Significant differences were noticed in AMH, FSH, level and AFC before and after DHEA supplementation. (AMH: 0.64 ± 0.82 vs. 1.98 ± 1.32, AFC: 2.86 ± 0.64 vs. 5.82 ± 2.42, and FSH: 12.44 ± 3.85 vs. 8.12 ± 4.64), statistically obvious significant differences regarding the results of AMH (p < 0.001), AFC (p < 0.001), and FSH (p < 0.001). DHEA supplementations improved the ovarian reserve of the enrolled women, which was more evident in younger women (<38 years old) than older women (≥38 years old). The AMH serum levels and AFC value can be considered the best, most reliable and significant OR parameters. However, large randomized multicenter studies are required to confirm the available results and data.
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  • 文章类型: Journal Article
    背景:热休克蛋白60(HSP60),一种潜在的稳态抗原,涉及生理和非生理条件。实验数据支持HSP60在胎盘和线粒体类固醇生成中的作用。此外,HSP60在应激条件下易位到内皮细胞质膜和细胞外空间,促进动脉粥样硬化过程。因此,我们调查了绝经后妇女HSP60与内皮功能之间的关系,考虑到雄性激素可能的致动脉粥样硬化作用。方法:本研究包括123名健康绝经后妇女。排除标准为高血压或血脂异常,过去6个月的更年期激素治疗,和先前诊断的外周血管疾病或心血管疾病。获得空腹静脉血样品用于生化和激素评估以及HSP60的评估。血流介导扩张(FMD)的超声检查在一个疗程之后立即进行。结果:单因素分析显示,FMD值低于中位数5.12%的女性的logHSP60值较低(低与高口蹄疫,HSP60值:2.01±1.16ng/mlvs.3.22±1.17ng/ml,p值=0.031)。多变量分析显示logHSP60与FMD相关(b系数=0.171,p值=0.046),调整传统的心血管危险因素(TRF)和胰岛素水平。对睾酮和DHEAS的进一步调整使得结果不显著。在多变量分析中,FMD与胰岛素相关(b系数=-0.166,p值=0.034),睾酮(b系数=-0.165,p值=0.034),DHEAS(b系数=-0.187,p值=0.017),调整TRF。讨论:这项研究的结果表明,雄激素与内皮功能之间的关联可能是由HSP60分子介导的,在胰岛素抵抗和雄激素性低的女性中。需要进一步的前瞻性研究来探索我们发现的意义。
    Background: Heat shock protein 60 (HSP60), a potentially homeostatic antigen, is involved in physiological and non-physiological conditions. Experimental data support the role of HSP60 in placental and mitochondrial steroidogenesis. Furthermore, HSP60 is translocated into the endothelial-cell plasma membrane and the extracellular space under stress conditions, promoting the atherosclerotic process. Therefore, we investigated the association between HSP60 and endothelial function in postmenopausal women, considering the possible atherogenic effect of androgenic hormones. Methods: This study included 123 healthy postmenopausal women. Exclusion criteria were treated hypertension or dyslipidaemia, menopause hormone therapy during the last 6 months, and previously diagnosed peripheral vascular disease or cardiovascular disease. Fasting venous blood samples were obtained for biochemical and hormonal assessment and evaluation of HSP60. Sonographic assessment of flow-mediated dilation (FMD) occurred immediately after that in one session. Results: Univariate analysis showed that women with FMD values below median 5.12% had lower logHSP60 values (low vs. high FMD, HSP60 values: 2.01 ± 1.16 ng/ml vs. 3.22 ± 1.17 ng/ml, p-value = 0.031). Multivariable analysis showed that logHSP60 was associated with FMD (b-coefficient = 0.171, p-value = 0.046), adjusting for traditional cardiovascular risk factors (TRFs) and insulin levels. Further adjustment for testosterone and DHEAS rendered the result non-significant. In the multivariable analysis, FMD was associated with insulin (b-coefficient = -0.166, p-value = 0.034), testosterone (b-coefficient = -0.165, p-value = 0.034), DHEAS (b-coefficient = -0.187, p-value = 0.017), adjusting for TRFs. Discussion: The results of this study indicate that the association between androgens and endothelial function is possibly mediated by HSP60 molecules, in women with low insulin resistance and androgenicity. Further prospective studies are needed to explore the significance of our findings.
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  • 文章类型: Journal Article
    研究表明,结核病(TB)和2型糖尿病(T2DM)都存在免疫内分泌失衡,其特征是促炎分子和激素水平失调(皮质醇/DHEA比值高)。阻碍由细胞因子驱动的针对结核分枝杆菌(Mtb)的有效免疫应答,抗菌肽(AMP),和雄激素像DHEA.胰岛素,磺酰脲衍生物,二甲双胍是TB和T2DM患者常用的降糖药物。对于这种共病,二甲双胍是恢复针对Mtb失调的免疫内分泌机制的有吸引力的靶标。这项研究旨在评估二甲双胍是否影响肾上腺细胞中皮质醇和DHEA的合成,以及这些激素是否影响Mtb感染的巨噬细胞中促炎细胞因子和AMPs的表达。我们的结果表明,二甲双胍可以增强DHEA合成,同时维持皮质醇稳态。此外,来自二甲双胍处理的肾上腺细胞的上清液减少了巨噬细胞中的分枝杆菌负荷,这与促炎细胞因子和AMP表达升高有关(HBD-2和3)。有趣的是,我们发现HBD-3和LL-37可以调节肾上腺细胞中的类固醇合成,皮质醇和DHEA水平降低,强调肾上腺激素和这些先天免疫效应物之间串扰通信的重要性。我们建议二甲双胍的作用可以直接或通过调节皮质类固醇激素来促进针对Mtb的先天免疫。
    Research suggests that both tuberculosis (TB) and type 2 diabetes mellitus (T2DM) have an immuno-endocrine imbalance characterized by dysregulated proinflammatory molecules and hormone levels (high cortisol/DHEA ratio), impeding an effective immune response against Mycobacterium tuberculosis (Mtb) driven by cytokines, antimicrobial peptides (AMPs), and androgens like DHEA. Insulin, sulfonylurea derivatives, and metformin are commonly used glucose-lowering drugs in patients suffering from TB and T2DM. For this comorbidity, metformin is an attractive target to restore the immunoendocrine mechanisms dysregulated against Mtb. This study aimed to assess whether metformin influences cortisol and DHEA synthesis in adrenal cells and if these hormones influence the expression of proinflammatory cytokines and AMPs in Mtb-infected macrophages. Our results suggest that metformin may enhance DHEA synthesis while maintaining cortisol homeostasis. In addition, supernatants from metformin-treated adrenal cells decreased mycobacterial loads in macrophages, which related to rising proinflammatory cytokines and AMP expression (HBD-2 and 3). Intriguingly, we find that HBD-3 and LL-37 can modulate steroid synthesis in adrenal cells with diminished levels of cortisol and DHEA, highlighting the importance of crosstalk communication between adrenal hormones and these effectors of innate immunity. We suggest that metformin\'s effects can promote innate immunity against Mtb straight or through modulation of corticosteroid hormones.
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  • 文章类型: Journal Article
    神经活性类固醇(即,性类固醇激素和神经类固醇)是神经功能的重要生理调节剂,是神经退行性疾病和精神疾病的潜在神经保护剂。性别是这种影响的重要组成部分。然而,即使月经周期中类固醇性激素水平的波动与某些女性的神经病理学事件有关,在整个卵巢周期中,大脑中的神经活性类固醇模式尚未得到充分研究。因此,我们评估了孕烯醇酮的水平,黄体酮,及其代谢物(即,二氢孕酮,别孕烯醇酮和异别孕烯醇酮),脱氢表雄酮,睾酮及其代谢物(即,双氢睾酮,3α-二醇和17β-雌二醇)在整个大鼠卵巢周期中,以确定其血浆波动是否与中枢中发生的波动相似(即,海马和大脑皮层)和外周(即,坐骨神经)神经系统。获得的数据表明,这些分子的血浆模式通常不能完全反映神经系统中发生的事件。此外,对于一些神经活性类固醇水平,这种模式在两个大脑区域之间以及大脑和周围神经之间是不相同的。的确,除了黄体酮,此处评估的所有其他神经活性类固醇在发情周期中的神经系统波动模式均显示出特殊的区域差异。这些观察结果可能对受月经周期影响的神经病理学事件具有重要的诊断和治疗作用。
    Neuroactive steroids (i.e., sex steroid hormones and neurosteroids) are important physiological regulators of nervous function and potential neuroprotective agents for neurodegenerative and psychiatric disorders. Sex is an important component of such effects. However, even if fluctuations in sex steroid hormone level during the menstrual cycle are associated with neuropathological events in some women, the neuroactive steroid pattern in the brain across the ovarian cycle has been poorly explored. Therefore, we assessed the levels of pregnenolone, progesterone, and its metabolites (i.e., dihydroprogesterone, allopregnanolone and isoallopregnanolone), dehydroepiandrosterone, testosterone and its metabolites (i.e., dihydrotestosterone, 3α-diol and 17β-estradiol) across the rat ovarian cycle to determine whether their plasma fluctuations are similar to those occurring in the central (i.e., hippocampus and cerebral cortex) and peripheral (i.e., sciatic nerve) nervous system. Data obtained indicate that the plasma pattern of these molecules generally does not fully reflect the events occurring in the nervous system. In addition, for some neuroactive steroid levels, the pattern is not identical between the two brain regions and between the brain and peripheral nerves. Indeed, with the exception of progesterone, all other neuroactive steroids assessed here showed peculiar regional differences in their pattern of fluctuation in the nervous system during the estrous cycle. These observations may have important diagnostic and therapeutic consequences for neuropathological events influenced by the menstrual cycle.
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  • 文章类型: Journal Article
    经典的雄激素,睾酮和二氢睾酮,与脱氢表雄酮一起,所有雄激素的前体,通常包括在雄激素过量和缺乏疾病的诊断类固醇评估中,并在雄激素替代和雄激素抑制疗法中进行监测。C11-氧雄激素也有助于雄激素过量疾病,并且仍然经常被排除在临床和基于研究的类固醇分析之外。在雄激素缺乏中尚未考虑C11-氧雄激素对雄激素库的贡献。对男性循环肾上腺和性腺类固醇激素进行了探索性研究,因为在同时测量所有肾上腺类固醇激素的情况下,既没有评估经典雄激素也没有评估C11-氧雄激素。血清雄激素,盐皮质激素,糖皮质激素,使用超高效超临界流体色谱和串联质谱法对70名健康年轻男性进行了孕激素和雄激素的评估。睾酮,24.5nmol/L是所有参与者中检测到的最突出的雄激素,而二氢睾酮,1.23nmol/L,仅在25%的参与者中检测到。11-氧雄激素存在于大多数具有11-羟基雄烯二酮的参与者中,3.37nmol,98.5%,11-酮雄烯二酮0.764,占77%,11-羟基睾酮,96%的0.567和11-酮雌酮:63%的0.440。三分之一的参与者有正常的睾酮和相当的11-酮雌酮,脱氢表雄酮显著降低(p<0.001)。在这些男性中,11-羟基雄烯二酮(p<0.001),11-酮雄烯二酮(p<0.01)和11-羟基睾酮(p<0.006)降低。糖皮质激素也较低:皮质醇(p<0.001),皮质酮(p<0.001),可的松(p<0.006)11-脱氢皮质酮(p<0.001)以及皮质醇:可的松(p<0.001)。脱氢表雄酮的存在与16-羟基孕酮有关(p<0.001),也明显较低。肾上腺和性腺类固醇分析显示,正常年轻男性中意外的类固醇异质性。睾酮占循环游离雄激素的78%,所有参与者中大量存在的11-氧雄激素显着贡献22%。此外,部分男性患者被确定为低循环脱氢表雄酮患者,其肾上腺类固醇改变,糖皮质激素减少,C11-氧雄激素减少.通过对脱氢表雄酮和16-羟基孕酮的额外测量,对经典和11-氧雄激素的分析可能会提高雄激素过量或缺乏的诊断准确性。
    The classical androgens, testosterone and dihydrotestosterone, together with dehydroepiandrosterone, the precusrsor to all androgens, are generally included in diagnostic steroid evaluations of androgen excess and deficiency disorders and monitored in androgen replacement and androgen suppressive therapies. The C11-oxy androgens also contribute to androgen excess disorders and are still often excluded from clinical and research-based steroids analysis. The contribution of the C11-oxy androgens to the androgen pool has not been considered in androgen deficiency. An exploratory investigation into circulating adrenal and gonadal steroid hormones in men was undertaken as neither the classical androgens nor the C11-oxy androgens have been evaluated in the context of concurrent measurement of all adrenal steroid hormones. Serum androgens, mineralocorticoids, glucocorticoids, progesterones and androgens were assessed in 70 healthy young men using ultra high performance supercritical fluid chromatography and tandem mass spectrometry. Testosterone, 24.5 nmol/L was the most prominent androgen detected in all participants while dihydrotestosterone, 1.23 nmol/L, was only detected in 25% of the participants. The 11-oxy androgens were present in most of the participants with 11-hydroxyandrostenedione, 3.37 nmol, in 98.5%, 11-ketoandrostenedione 0.764 in 77%, 11-hydroxytestosterone, 0.567 in 96% and 11-ketotestosterone: 0.440 in 63%. A third of the participants with normal testosterone and comparable 11-ketotestosterone, had significantly lower dehydroepiandrosterone (p < 0.001). In these males 11-hydroxyandrostenedione (p < 0.001), 11-ketoandrostenedione (p < 0.01) and 11-hydroxytestosterone (p < 0.006) were decreased. Glucocorticoids were also lower: cortisol (p < 0.001), corticosterone (p < 0.001), cortisone (p < 0.006) 11-dehydrocorticosterone (p < 0.001) as well as cortisol:cortisone (p < 0.001). The presence of dehydroepiandrosterone was associated with 16-hydroxyprogesterone (p < 0.001), which was also significantly lower. Adrenal and gonadal steroid analysis showed unexpected steroid heterogeneity in normal young men. Testosterone constitutes 78% of the circulating free androgens with the 11-oxy androgens abundantly present in all participants significantly contributing 22%. In addition, a subset of men were identified with low circulating dehydroepiandrosterone who showed altered adrenal steroids with decreased glucocorticoids and decreased C11-oxy androgens. Analysis of the classical and 11-oxy androgens with the additional measurement of dehydroepiandrosterone and 16-hydroxyprogesterone may allow better diagnostic accuracy in androgen excess or deficiency.
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  • 文章类型: Journal Article
    维生素C(抗坏血酸,AA),作为重要的微量营养素,对雄性动物的繁殖起着至关重要的作用。以前,我们发现维生素C重编程转录组和蛋白质组改变猪未成熟支持细胞(iSC)的表型。这里,我们使用基于LC-MS的非靶向代谢组学进一步研究维生素C对猪iSC的代谢作用。结果确定了维生素C(L-抗坏血酸2-磷酸倍半镁盐水合物,AA2P)处理猪iSC,主要富含类固醇相关和蛋白质相关的代谢途径。酶联免疫吸附试验(ELISA)显示脱氢表雄酮(DHEA)(参与类固醇激素生物合成)和去甾醇(参与类固醇降解)的差异代谢产物显著增加,这与代谢组学结果部分一致。代谢组学的进一步综合分析,转录组学和蛋白质组学数据确定了脱氢表雄酮的关键差异代谢物与6个差异表达基因(DEP)(HMGCS1,P4HA1,STON2,LOXL2,EMILIN2和CCN3)之间的强相关性。进一步的实验验证了HMGCS1可以正向调节脱氢表雄酮水平。这些数据表明维生素C可以调节新陈代谢,HMGCS1-DHEA可能是介导维生素C对猪iSC作用的途径。
    Vitamin C (Ascorbic acid, AA), as vital micro-nutrient, plays an essential role for male animal reproduction. Previously, we showed that vitamin C reprogrammed the transcriptome and proteome to change phenotypes of porcine immature Sertoli cells (iSCs). Here, we used LC-MS-based non-targeted metabolomics to further investigate the metabolic effects of vitamin C on porcine iSCs. The results identified 43 significantly differential metabolites (DMs) (16 up and 27 down) as induced by vitamin C (L-ascorbic acid 2-phosphate sesquimagnesium salt hydrate, AA2P) treatment of porcine iSCs, which were mainly enriched in steroid related and protein related metabolic pathways. ELISA (Enzyme-Linked ImmunoSorbent Assay) showed that significantly differential metabolites of Dehydroepiandrosterone (DHEA) (involved in steroid hormone biosynthesis) and Desmosterol (involved in steroid degradation) were significantly increased, which were partially consistent with metabolomic results. Further integrative analysis of metabolomics, transcriptomics and proteomics data identified the strong correlation between the key differential metabolite of Dehydroepiandrosterone and 6 differentially expressed genes (DEGs)/proteins (DEPs) (HMGCS1, P4HA1, STON2, LOXL2, EMILIN2 and CCN3). Further experiments validated that HMGCS1 could positively regulate Dehydroepiandrosterone level. These data indicate that vitamin C could modulate the metabolism profile, and HMGCS1-DHEA could be the pathway to mediate effects exerted by vitamin C on porcine iSCs.
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  • 文章类型: Journal Article
    骨质疏松易导致骨折延迟愈合,甚至是非工会。已经证明,补充脱氢表雄酮(DHEA)可以增加雌激素水平并改善老年人的骨密度(BMD),而DHEA对骨折愈合的作用尚不清楚。本研究旨在阐明补充DHEA对骨质疏松性骨折愈合的影响。使用72只雌性Sprague-Dawley大鼠。48只大鼠接受卵巢切除术(OVX),其余大鼠接受假OVX手术(假手术组)。在OVX后12周对所有大鼠进行右股骨横向截骨术。将OVX大鼠随机分为2组(每组n=24):(i)去卵巢大鼠(对照组)和(ii)接受DHEA治疗的去卵巢大鼠(DHEA组,5mg/kg/天)。在骨折后的第一天开始补充DHEA,持续3、6和12周。骨折愈合通过射线照相术评估,组织学,生物力学分析,和双能X射线吸收法(DEXA)。使用酶联免疫吸附测定(ELISA)分析血清生物标志物。在3周和6周,X线照片显示,对照组的老茧形成减少,放射学评分低于其他组。假手术组和DHEA组骨折后BMD和骨矿物质含量(BMC)高于对照组。组织学分析显示,假手术和DHEA组比对照组的骨折骨痂重塑更好。在愈合的早期阶段,补充DHEA可增加成骨细胞数量,愈伤组织面积,软骨面积优于对照组。在愈合后期,DHEA组的骨面积比对照组增加。此外,假手术组和DHEA组骨折后生物力学特性均优于对照组。ELISA显示DHEA组骨折后胰岛素样生长因子-1(IGF-1)和17β-雌二醇(E2)的水平高于对照组。此外,与对照组相比,DHEA组在第6周和第12周表现出显著升高的碱性磷酸酶(ALP)和骨钙蛋白(OC)水平.DHEA组和对照组的TRAP-5b水平没有显着差异。本研究表明,DHEA治疗对骨质疏松性骨折愈合有良好的影响,通过促进骨痂的形成,合并,OVX大鼠的力量。
    Osteoporosis easily causes delayed fracture union, even non-union. It has been demonstrated that dehydroepiandrosterone (DHEA) supplementation can increase estrogen levels and improve bone mineral density (BMD) in the elderly, while the role of DHEA on fracture healing remains unknown. This study aimed to elucidate the impact of DHEA supplementation on osteoporotic fracture healing. Seventy-two female Sprague-Dawley rats were used. Forty-eight rats received ovariectomy (OVX), and the remaining rats received a sham OVX operation (sham group). A right transverse femoral osteotomy was performed in all rats at 12 weeks post-OVX. OVX rats were randomly allocated into 2 groups (n = 24 in each group): (i) ovariectomized rats (control group) and (ii) ovariectomized rats treated with DHEA (DHEA group, 5 mg/kg/day). The DHEA supplementation was initiated on the first day post-fracture for 3, 6, and 12 weeks. Fracture healing was evaluated by radiography, histology, biomechanical analysis, and dual-energy X-ray absorptiometry (DEXA). Serum biomarkers were analyzed using enzyme-linked immunosorbent assay (ELISA). At 3 and 6 weeks, radiographs revealed reduced calluses formation and lower radiographic scores in the control group than in other groups. The sham and DHEA groups showed higher BMD and bone mineral content (BMC) at the fracture site than the control group after fracture. Histological analysis revealed the fracture callus was remodeled better in the sham and DHEA groups than in the control group. At the early phase of healing, DHEA supplementation increased osteoblast number, callus area, and cartilage area than the control group. An increased bone area was observed in the DHEA group than in the control group at the late phase of healing. Additionally, improved biomechanical characteristics were observed in both the sham and DHEA groups than those in the control group post-fracture. ELISA showed higher levels of insulin-like growth factor-1 (IGF-1) and 17β-estradiol (E2) in the DHEA group than in the control group post-fracture. Furthermore, the DHEA group exhibited significantly elevated alkaline phosphatase (ALP) and osteocalcin (OC) levels compared to the control group at 6 and 12 weeks. The DHEA group and the control group did not exhibit a notable difference in TRAP-5b levels. The present study demonstrated that the DHEA treatment has a favorable impact on osteoporotic fracture healing by enhancing callus formation, consolidation, and strength in the OVX rats.
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  • 文章类型: Journal Article
    多囊卵巢综合征(PCOS)是妇科最常见的,生育年龄期间发生的内分泌紊乱,是无排卵性不孕症的重要原因。来曲唑是一种芳香酶抑制剂,它可以消除芳香酶的作用,导致女性体内雄性激素(睾丸激素)的积累,导致高雄激素血症,这是多囊卵巢综合症的标志。米非司酮(RU486)是一种孕激素拮抗剂,可以阻止孕激素的作用,导致卵泡闭锁和无排卵。DHEA是一种雄激素,也是为了在大鼠中引起高雄激素血症而施用的。这项研究旨在评估这些激素对卵巢和子宫细胞结构的影响,以评估其各种PCOS样组织学特征。动物主要分为三种:来曲唑,米非司酮和DHEA组,进一步分为两个子组,每个子组,口服低剂量和高剂量来曲唑,米非司酮和脱氢表酮(DHEA)皮下。每个亚组还具有比较对照组。行政工作完成后,Wistar大鼠被安乐死,收集卵巢和子宫进行组织学分析。与对照组相比,治疗组的卵泡增殖增加,以及子宫内膜层的增厚。
    Polycystic ovary syndrome (PCOS) is the most common gynaecological, endocrine disorder that occurs during reproductive age and is a significant cause of anovulatory infertility. Letrozole is an aromatase inhibitor which negates the action of the aromatase enzyme, which results in the buildup of male hormones (testosterone) in the females, causing hyperandrogenism, which is a hallmark of Polycystic Ovarian Syndrome. Mifepristone (RU486) is a progestin antagonist that acts to arrest the actions of the progesterone hormone, resulting in follicular atresia and anovulation. DHEA is an androgen which was also administered in a bid to cause hyperandrogenism in the rats.This study aimed to evaluate the effects of these hormones on the cytoarchitecture of the ovaries and uterus to assess their various PCOS-like histological features.Animals were grouped mainly into three: Letrozole, Mifepristone and DHEA groups, which were further divided into two subgroups each, administered low and high doses of letrozole orally, Mifepristone and Dehydroepiandosterone (DHEA) subcutaneously. Each of the subgroups also had a comparison control group. Following the completion of administration, the Wistar rats were euthanized, and their ovaries and uterus were collected for histological analysis.Increased proliferation of ovarian follicles was noted in the treated groups compared to control, as well as thickening of the endometrial layer.
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  • 文章类型: Journal Article
    背景:脱氢表雄酮(DHEA)和猴头菌的神经保护作用(H。在雄性Wistar大鼠中,研究了香菇提取物对东莨菪碱诱导的阿尔茨海默病样症状的影响。
    方法:64只雄性Wistar大鼠分为8组(n=8)。以1mg/kg/天的剂量腹膜内注射东莨菪碱(SCO),持续10天。治疗组经口接受DHEA(250mg/kg/天)和/或紫苏杆菌(300mg/kg/天)14天。之后,Morris水迷宫(MWM)和新的目标识别测试。然后,将动物麻醉并分离脑组织样品。脂质过氧化(LPO)的水平,总抗氧化能力(TAC),过氧化氢酶活性(CAT),测定脑源性神经营养因子(BDNF)。此外,在脑组织样本中评估了组织病理学研究。
    结果:给予SCO显著降低空间和认知记忆(p<0.001)。SCO注入不仅显著增加了LPO的水平,而且SCO显著降低了TAC的水平,CAT活动,和脑组织中的BDNF。另一方面,在减轻行为异常和改善抗氧化防御系统和BDNF水平方面,DHEA和H.erinaceus的组合显示出比DHEA或H.erinaceus更高的功效。组织学检查与有关SCO神经变性和DHEA和/或H.erinaceus神经保护的生化发现密切相关。
    结论:有趣的是,由于其潜在的神经营养特性,ADHE和/或马氏真菌可能被用作一种新的有益的同步治疗,用于治疗由SCO引起的阿尔茨海默病样症状。
    BACKGROUND: The neuroprotective effects of Dehydroepiandrosterone (DHEA) and Hericium erinaceus (H. erinaceus) mushroom extract against scopolamine-induced Alzheimer\'s disease-like symptoms in male Wistar rats were investigated.
    METHODS: Sixty-four male Wistar rats were divided into eight groups (n = 8). Scopolamine (SCO) was intraperitoneally injected at a dose of 1 mg/kg/day for 10 days. The treatment groups orally received DHEA (250 mg/kg/day) and/or H. erinaceus (300 mg/kg/day) for 14 days. Afterward, the Morris water maze (MWM) and novel object recognition tests were implemented. Then, animals were anesthetized and the brain tissue samples were separated. Levels of lipid peroxidation (LPO), total antioxidant capacity (TAC), catalase activity (CAT), and brain-derived neurotrophic factor (BDNF) were determined. Also, histopathological studies were evaluated in the brain tissue samples.
    RESULTS: Administration of SCO significantly decreased spatial and cognitive memory (p < 0.001). Not only did SCO injection significantly increase the levels of the LPO but also the SCO markedly reduced the levels of the TAC, CAT activity, and the BDNF in the brain tissue. On the other hand, a combination of the DHEA and H. erinaceus showed higher efficacy than the DHEA or H. erinaceus in attenuating behavioral anomalies and improving the antioxidant defense system and BDNF levels. Histological examination was well correlated with biochemical findings regarding SCO neurodegeneration and DHEA and/or H. erinaceus neuroprotection.
    CONCLUSIONS: Interestingly, ADHE and/or H. erinaceus may due to their potential neurotrophic properties be used as a new and beneficial concurrent therapy in the treatment of Alzheimer\'s disease-like symptoms caused by SCO.
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  • 文章类型: Journal Article
    脱氢表雄酮(DHEA)和皮质醇释放似乎对压力任务期间的压力感知具有相反的影响。本研究旨在通过考虑DHEA来调查大学生的预期考试压力。皮质醇,心理情绪方面和考试表现。七十六名学生(66名女生,10名男性;年龄范围18-25岁)提供唾液样本并在两次会议中完成问卷调查,相隔48小时。在第二届会议期间,学生们进行了考试。使用的问卷是状态特质焦虑量表,积极和消极影响量表,以及对经历问题的简要应对取向。DHEA,皮质醇,焦虑和负面情绪在检查前显示出预期的上升(所有ps<0.001)。DHEA和皮质醇的升高与较低的积极影响有关(分别为p=0.001和p=0.043)。然而,只有DHEA预期水平与较差的检查标记相关(p=0.020).预期检查中DHEA/皮质醇比率的较高水平与寻求支持策略的较低分数有关(p=0.022)。DHEA和皮质醇水平与焦虑之间没有关联,负面影响,积极和回避的应对策略,或学术记录。这些结果表明,DHEA和皮质醇对考试压力的预期反应显着影响学生在考试期间的情绪健康以及他们如何应对压力。他们还表明,预期学术压力源的DHEA水平对压力管理有不利影响。
    Dehydroepiandrosterone (DHEA) and cortisol release appear to have contrasting effects on stress perception during stressful tasks. This study aimed to investigate anticipatory examination stress in college students by considering DHEA, cortisol, psycho-emotional aspects and examination performance. Seventy-six students (66 females, 10 males; age range 18-25 years) provided saliva samples and completed questionnaires in two sessions 48 hours apart. During the second session, the students performed the examination. The questionnaires used were the State-Trait Anxiety Inventory, the Positive and Negative Affect Scale, and the Brief-Coping Orientation to Problems Experienced Inventory. DHEA, cortisol, anxiety and negative affect showed an anticipatory rise before the examination (all ps < 0.001). This rise of DHEA and cortisol was associated with lower positive affect (p = 0.001 and p = 0.043, respectively). However, only the DHEA anticipatory levels were linked to poorer examination marks (p = 0.020). Higher levels of the DHEA/cortisol ratio in anticipation of the examination were related to lower scores on the support-seeking strategy (p = 0.022). There was no association between DHEA and cortisol levels and anxiety, negative affect, active and avoidant coping strategies, or academic record. These results suggest that how DHEA and cortisol respond in anticipation of examination stress significantly impacts students\' emotional well-being during examination periods and how they cope with stress. They also suggest that levels of DHEA in anticipation of an academic stressor have detrimental effects on stress management.
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