超高分子量PE凝胶膜的超拉伸性与旁式构象关系研究

通过ＩＲ方法，观测并讨论了在不同条件下制备的超高分子量ＰＥ（ＵＨＭＰＥ）凝胶膜中旁式（Ｇ构象）构象与超拉伸性的关系，提出了Ｇ构象浓度及分布对ＵＨＭＰＥ凝胶膜超拉伸性影响的新概念，同时也讨论了它与链缠结之间的联系，发现：反映Ｇ构象的相对浓度的比值σ＝Ｉ１３０３Ｉ１３５２随制膜浓度的增大而增加，在临界浓度Ｃ０（０．４－０．５ｇ１００ｍｌ）附近所形成的膜，具有超高拉伸性（λ＝２００），其Ｇ构象的变化与Ｍ     

封闭型硼烷B15H15^2—（D3h）的结构及稳定性的从头算分析

利用量子化学从头算方法在ＨＦ／６－３１Ｇ水平上，优化计算了带２个负电荷的封闭型硼烷Ｂ１５Ｈ１５＾２－（Ｄ３ｈ）的结构、能量和正则振动频率。该硼烷的简正振动频率计算表明，它是ＨＦ／６－３１Ｇ势能超曲面上的真实稳定点。理论预测它在化学上和动力学上都是稳定的。     

甘氨酸的杂多酚超分子化合物的合成及性质研究

首次合成了甘氨酸的Ｋｅｇｇｉｎ结构杂多酸超分子化合物（ＨＧｌｙ）３「ＰＷ１２Ｏ４０」．５Ｈ２Ｏ（ＨＧｌｙ）４「ＳｉＷ１２Ｏ４０」．４Ｈ２Ｏ,用元素分析,ＩＲ,ＵＶ,ＴＧ－ＤＴＡ,ＸＲＤ和ＮＭＲ等方法对标题化合物进行了表征,并讨论了它们的合成条件及结构特性。     

Ge—132在机体内代谢产物的实验证实

评述了Ｇｅ－１３２的安全性，对大鼠口服Ｇｅ－１３２代谢产物的研究表明，Ｇｅ－１３２的基本骨架ＧｅＣＨ２ＣＨ２ＣＯＯＨ没有变化，即它不会降解为ＧｅＯ２或其他的无机锗化合物。     

Pt／H－Ga－Si杂原子分子筛催化剂上丙烷芳构化

考察了在具有Ｐｅｎｔａｓｉｌ孔道结构的Ｈ－Ｇａ－Ｓｉ与Ｐｔ／Ｈ－Ｇａ－Ｓｉ杂原子分子筛及ＨＺＳＭ－５分子筛催化剂上的丙烷芳构化。Ｐｔ／Ｈ－Ｇａ－Ｓｉ有较高催化活性和芳烃选择性，用ＸＲＤ、ＴＥＭ和ＴＰＲ等技术对催化剂进行了表征，讨论了Ｐｔ与Ｇａ的相互作用。Ｐｔ／Ｈ－Ｇａ－Ｓｉ为双功能催化剂，Ｐｔ促进烷烃脱氢成为烯烃，还能降低丙烷裂解活性，而且可稳定骨架Ｇａ，使其不易脱除；Ｇａ可以提高中间烯烃转变为芳烃的选择性。Ｈ－Ｇａ－Ｓｉ与ＨＺＳＭ－５上的丙烷芳构化机理不同。Ｈ－Ｇａ－Ｓｉ上为丙烷脱氢机理，Ｇａ脱去Ｈ＋形成活泼正碳离子，同时由于骨架Ｇａ与分子筛Ｂ酸位相邻，所以可提高芳烃选择性；ＨＺＳＭ－５上丙烷活化是经过裂化机理，再通过氢转移步骤形成芳烃。     

侧脑室注射氯化镧对大鼠血清生长素和甲状腺素的影响

西方研究了侧脑室注入ＬａＣｌ３对大鼠血清中生长系,甲状腺素,促甲状腺素和下丘脑中生长抑素的影响。侧脑室注射０．００１和０．０１ｍｏｌ．ｌ＾－１ＬａＣｌ３,血清中Ｔ４和ＧＨ含量明显高于对照组,０．１和０．５ｍｏｌ．ｌ＾－１ＬａＣｌ３组血清Ｔ４和ＧＨ未见明显变化。     

聚丙烯酰胺/柠檬酸铝胶态分散凝胶性质的研究

用低浓度不同分子量的部分水解聚丙烯酰胺（ Ｈ Ｐ Ａ Ｍ） 和柠檬酸铝制备了胶态分散凝胶（ Ｃ Ｄ Ｇ） ,并用奥氏粘度计、超细粒度分析仪、岩芯流动实验对 Ｃ Ｄ Ｇ 的性质进行了研究．结果表明, Ｃ Ｄ Ｇ 的粘度比 Ｈ Ｐ Ａ Ｍ 粘度低,粒径在４５０ ～５２０ｎ ｍ 之间．岩芯流动实验结果表明, Ｃ Ｄ Ｇ 能够使岩芯的流动阻力大幅度增加,且在岩芯中达到同样的流动阻力所需通过 Ｃ Ｄ Ｇ 的体积与形成 Ｃ Ｄ Ｇ 的 Ｈ Ｐ Ａ Ｍ 的分子量、浓度及岩芯渗透率有关．     

HIGH ACTIVITY FUSED IRON CATALYST FOR CO HYDROGENATION TO HIGHER ALCOHOLS

ＨＩＧＨＡＣＴＩＶＩＴＹＦＵＳＥＤＩＲＯＮＣＡＴＡＬＹＳＴＦＯＲＣＯＨＹＤＲＯＧＥＮＡＴＩＯＮＴＯＨＩＧＨＥＲＡＬＣＯＨＯＬＳＳｕＹｕｎｌａｉ，ＧｕｏＹｉｑｕｎ，ＷａｎｇＷｅｎｘｉａｎｇ，ＺｈａｎｇＹｕａｎｚｈｅｎ（ＣａｔａｌｙｓｉｓＲｅｓｅａｒｃｈ...     

取代型钨镓杂多配合物的导电性及其磁性

合成了过渡金属取代的钨镓杂多配合物α－Ｎａ７「ＧａＷ１１Ｃｏ（Ｈ２Ｏ）Ｏ３９」．１６Ｈ２Ｏ，α－Ｎａ７Ｈ２「ＧａＷ１０Ｃｏ２（Ｈ２Ｏ）２Ｏ３９」．１６Ｈ２Ｏ和α－ＮａｎＨｍ「ＧａＷ９ＭＥ（Ｈ２Ｏ）３Ｏ３７」．１６Ｈ２Ｏ「Ｍ＝Ｃｏ（Ⅱ），Ｎｉ（Ⅱ，）Ｖ（Ⅴ）」，通过红外，紫外，ＩＣＰ，ＴＧ－ＤＴＡ，ＥＰＲ，ＸＰＳ，＾１８３ＷＮＭＲ，极谱等手段进行了表征。     

[Cu2（Gly—GlyO）2（4,4‘—bpy）（OH）2].10H2O配合物的合成,晶 …

合成了以４，４－ｂｐｙ为中继基，Ｇｌｙ，ＧｌｙＯ为螯环的新型双核铜配合物。经Ｘ射线单昌结构分析确定该配合化合物的化学式为「（Ｈ２ＣＣＨ２ＣＯＮＨＣＨ２ＣＯＯ）Ｃｕ（ＯＨ）Ｃｕ（ＯＨ）（Ｃ１０Ｈ８Ｎ２０Ｃｕ（ＯＨ）－（Ｈ２ＮＣＨ２ＣＯＮＨＨＣＨ２ＯＯ）．」１０Ｈ２Ｏ。     

针灸治疗多囊卵巢综合征致不孕症临床疗效观察

目的就针灸治疗多囊卵巢综合征致不孕症的临床疗效进行观察与探究。方法选择广州市天河区冼村街社区卫生服务中心自2013年4月至2015年5月期间收治的多囊卵巢综合征致不孕症患者66例,依据患者来院先后顺序平均分为参照组和观察组,每组患者33例。参照组患者予以常规治疗,观察组患者采用针灸治疗,最后比对两组患者的临床治疗效果。结果经不同方法治疗后,观察组患者各项指标的改善程度好于参照组,妊娠率和排卵率也均高于参照组,组间统计后差异显著。结论在多囊卵巢综合致不孕症患者治疗中应用针灸,其临床效果显著,具有临床应用价值。     

探究多囊卵巢综合征患者冻融胚胎移植子宫内膜准备方案的选择

目的探讨多囊卵巢综合征患者冻融胚胎移植子宫内膜准备的两种方案的效果。方法选择2014年3月到2016年3月间在深圳武警医院选择行冻融胚胎移植子宫内膜准备的700例多囊卵巢综合征患者作为研究对象,对所有患者的临床资料进行回顾性分析,根据患者子宫内膜准备方案分为人工组(n=350)和促排卵组(n=350),对比两组患者冻融胚胎移植效果。结果人工组患者胚胎复苏率、优质胚胎率、移植胚胎数、子宫内膜厚度、胚胎种植率、妊娠率与促排卵组相比均无差异,P0.05。结论人工子宫内膜与促排卵内膜效果相似,均可推广运用。     

Synthesis of biologically active analogs of luliberin with shortened amino acid sequences

Two new analogs of the releasing factor of the luteinizing hormone with shortened amino acid sequences have been synthesized by the methods of classical peptide chemistry. The influence of the preparations on the action of chorionic gonadotropin and on the course of processes of ovulation in experimental animals has been studied. The promising nature in this direction of the search for active analogs for luliberin has been shown.     

A Dual-Label Time-Resolved Fluorescence Immunoassay for the Simultaneous Determination of β-Human Chorionic Gonadotropin and Progesterone

A dual-label time-resolved fluorescence immunoassay (TRFIA) for the simultaneous determination of β human chorionic gonadotropin and progesterone was developed for the early diagnosis of ectopic pregnancy. The performance of this assay was evaluated using clinical serum and then compared with standard procedures. The sensitivity for β human chorionic gonadotropin detection was 1 U/L (linear dynamic range, 0–8000 U/L), and the sensitivity for progesterone detection was 0.05 ng/mL (linear dynamic range, 0–50 ng/mL). High correlation coefficients (R²) were obtained between the reported immunoassay and standard methods (R² = 0.99 for β human chorionic gonadotropin, R² = 0.97 for progesterone). The present dual-label TRFIA has high sensitivity, specificity, and accuracy in clinical analyses and is a suitable alternative to the single-labeled diagnostic methods.     

Purification of human chorionic gonadotropin hormone by anion-exchange high-performance liquid chromatography

Chromatographia - A high-performance liquid chromatography (HPLC) method was developed for the purification of 50mg crude human chorionic gonadotropin (HCG) hormone sample in one chromatographic...     

Determination of Estrogens by High Performance Liquid Chromatography with Pre-Label Derivatization with 2-(4-Carboxy)-5,6-Dimethylbenzimidazole (II): Shortening of Analysis Time and Application to Monitoring Estrogen in Serum From In-Vitro Fertilization Embryo Transfer (IVF-ET) Patients

Abstract

We report a sensitive high performance liquid chromatography (HPLC) method for determination of free and conjugated estrogens (estrone, estradiol and estriol) by a fluorescent pre-labeling regent, 2-(4-carboxyphenyl)-5,6-dimethylbenzimidazole, with modification of previous work. The modified method was also tried, in preliminary work, for diagnosis of the in-vitro fertilization embryo transfer (IVF-ET) process. The reagent volumes were changed to one-tenth, derivatization conditions were changed to mild conditions at 40 C, and a solid-phase extraction process by SEP-PAK could be omitted after restudy of reaction conditions. As a result analysis time could be shorted within 40 min. The proposed HPLC method was applied to monitoring of free and conjugated estrogens in the patients who attend in-vitro fertilization embryo transfer (IVF-ET). The subsequent increase of free and conjugated estrone, estradiol and estriol was observed with the progress of follicle growth following ovulation stage in the IVF-ET process. We tried to plot estrogens for assist of clinical diagnosis of IVF-ET. The free estrone: 200-600 pg/ml, estradiol: 200-600 pg/ml and estriol: 100-300 pg/ml, conjugate estrone: 1000-5000 pg/ml, estradiol: 3000-8000 pg/ml and estriol: 2000-7000 pg/ml) in the patients without hormone disease were observed before human chorionic gonadotropin stimulation (hCG) on IVF-ET process. It was expected that free estrogen values, especially E1 and E3 could be use as validation products for diagnosis of hormone disease in IVF-ET process.     

Linifanib induces apoptosis in human ovarian cancer cells via activation of FOXO3 and reactive oxygen species

Linifanib is known as an inhibitor of receptor tyrosine kinase. Even though it has been widely recognized as efficient inhibitor of receptor tyrosine kinases, anti-carcinogenic effect has not been investigated enough in ovarian cancer. In this study, we investigated the anti-cancer effect of linifanib on human ovary cancer SKOV3 cells. WST-1, cell counting assay, and observation of morphological changes were performed to evaluate the cytotoxic effect of linifanib in SKOV3 cells. We analyzed SKOV3 cells treated with linifanib using Muse cell analyzer. We focused on investigating the effect of linifanib on DNA damage in nucleus. Additionally, intracellular reactive oxygen species (ROS) level was measured through Muse cell analyzer. Western blotting was performed to evaluate the protein expression level related to apoptosis. We found that linifanib inhibited proliferation of SKOV3 cells. Our results showed that linifanib induced apoptosis in SKOV3 cells. Additionally, linifanib induced DNA damage in SKOV3 cells. We found that intracellular ROS level increased after treatment of linifanib in SKOV3 cells. Interestingly, FOXO3 was transferred from cytosol into nucleus after linifanib treatment. Taken together, our results supported that linifanib inhibited the proliferation of human ovary cancer SKOV3 cells, which suggested that linifanib might have the potential to be developed as drugs for ovarian cancer treatment.     

Participation of the Cholinergic System in the Development of Polycystic Ovary Syndrome

In rats with polycystic ovary syndrome (PCOS) induced by injection of estradiol valerate (EV), unilateral or bilateral section of the vagus nerve restores ovulatory function in 75% of animals, suggesting that the vagus nerve participates in the development of PCOS. Since the vagus nerve is a mixed nerve through which mainly cholinergic-type information passes, the objective of the present study was to analyze whether acetylcholine (ACh) is involved in the development of PCOS. Ten-day-old rats were injected with 2.0 mg EV, and at 60 days of age, they were microinjected on the day of diestrus in the bursa of the left or right ovary with 100 or 700 mg/kg of ovarian weight atropine, a blocker of muscarinic receptors, and sacrificed for histopathological examination after the surgery. Animals with PCOS microinjected with 100 mg of atropine showed a lack of ovulation, lower serum concentrations of progesterone and testosterone, and cysts. Histology of the ovaries of animals microinjected with 700 mg of atropine showed corpus luteum and follicles at different stages of development, which was accompanied by a lower concentration of progesterone and testosterone. These results allow us to suggest that in animals with PCOS, ACh, which passes through parasympathetic innervation, is an important component in the persistence and development of the pathophysiology.     

Potential Role of Quercetin in Polycystic Ovary Syndrome and Its Complications: A Review

Polycystic ovary syndrome (PCOS) is a common multisystem disease with reproductive, metabolic and psychological abnormalities. It is characterized by a high prevalence rate in women of childbearing age and highly heterogeneous clinical manifestations, which seriously harm women’s physical and mental health. Quercetin (QUR) is a natural compound of flavonoids found in a variety of foods and medicinal plants. It can intervene with the pathologic process of PCOS from multiple targets and channels and has few adverse reactions. It is mentioned in this review that QUR can improve ovulation disorder, relieve Insulin resistance (IR), reduce androgen, regulate lipid metabolism, regulate gut microbiota and improve vascular endothelial function, which is of great significance in the treatment of PCOS.