不同来源精子单精子卵胞浆内注射治疗不育症

目的：采用不同来源精子行单精子卵胞浆内注射术（ＩＣＳＩ）治疗不育症并进行疗效对比观察,方法：女性行常规超促排卵和经阴道超声引导下取卵。比较采用精液、附睾和睾丸精子行ＩＣＳＩ后的卵子损伤率、受精率、卵裂率、胚胎质量和临床妊娠率。结果：５３对不育夫妇共行６２仆ＩＣＳＩ周期。２７例临床妊娠,周期临床妊娠率为４３．５％,分别有３６、１２和１４个周期采用精液、附睾和睾丸精子,三组的卵子损伤率、受精率、卵裂率     

Nasotracheal enterococcal carriage and resistomes: detection of optrA-, poxtA- and cfrD-carrying strains in migratory birds,livestock, pets,and in-contact humans in Spain

European Journal of Clinical Microbiology & Infectious Diseases - This study determined the carriage rates and antimicrobial resistance (AMR) genes of enterococci from...     

中剂量特尔立(rhGM-CSF)防治肿瘤化疗所致白细胞减少的疗效观察

目的观察中剂量特尔立(rhGM-CSF)对恶性肿瘤化疗后白细胞减少的防治作用.方法采用自身对照,化疗过程中白细胞降至正常值(4.0×109/L)以下时入组,并作为对照周期.其后的化疗周期中末次给药48小时后皮下注射rhGM-CSF(150ug/(次.天).结果 rhGM-CSF能明显减轻化疗后白细胞下降的程度,缩短白细胞在正常值以下的持续时间及恢复到正常值以上的时间,对血小板的变化影响不大,毒副反应轻微.结论使用特尔立(rhGM-CSF)安全、有效,可作为肿瘤化疗有价值的辅助药物.     

人参根及茎叶皂苷对群养及隔离孤独饲育小鼠神经精神药理作用的研究

人参根及茎叶皂苷 ５０～２００ ｍｇ／ｋｇ能使群养小鼠的自发运动量明显增加,８周隔离饲育小鼠比群养小鼠自发运动量明显增加,人参根皂苷能使其剂量依赖性降低,而人参茎叶皂苷影响不明显;对戊巴比妥钠所致睡眠试验中,隔离孤独饲育小鼠比群养小鼠睡眠时间明显缩短（ｔ＝４．３５６,Ｐ＜０．００１）。人参根皂苷 ５０～２００ ｍｇ／ｋｇ使孤独饲育小鼠的睡眠时间随剂量增加而延长,２００ ｍｇ／ｋｇ组与对照组比较,ｔ＝３． ６６５,Ｐ＜０．０１。并能使 ８周隔离饲育的小鼠 ２０ ｍｉｎ内连续攻击时间有意义地下降（ｔ＝４．５４０,Ｐ＝０．００１）,但人参茎叶皂苷效果不明显。证明人参根及茎叶皂苷具有中枢兴奋作用,同时人参根皂苷还具有中枢镇静作用。     

化疗在晚期肺腺癌治疗中的作用

目的：探索晚期肺腺癌患者化疗疗效和对化疗的耐受性,化疗后生活质量变化和生存期。材料与方法：回顾分析1992－11~1995-04,经病理确诊为肺腺癌。按UICC分期为Ⅲb、Ⅳ期,Kamofsky评分≥60,连续完成2程以上的以铂类药物为主的联合化疗方案治疗患者。结果：化疗有效率3．1％,化疗后Kamofskv评分不变者43．8％,升高40．6％。下降≥10分15．6％,Ⅲb期中位生存期13月,Ⅳ期10月。结论：全身状况较好无化疗禁忌证的晚期肺腺癌患者,给予适当的联合化疗可使部分患者病情改善,生活质量提高。     

Bilateral macular hemorrhage after laser in situ keratomileusis

· Background: This is the first report of a bilateral submacular hemorrhage after LASIK surgery in an extreme myo pic patient. A 31-year-old man underwent bilateral surgery for correction of –16.75+0.75×70° and –16.50+0.50×55°. · Methods: Case report. · Results: One day after surgery the patient’s uncorrected visual acuity was in the 20/50 range OU and by 17 days after surgery his visual acuity had declined to 20/200 range. Fundus examination showed multifocal subretinal macular and posterior pole hemorrhages. Fluorescein angiography showed some macular lesions compatible with lacquer cracks. · Conclusions: Preoperative and postoperative fundus examination is important to detect this phenomenon. Patients should be informed of this rare complication. Received: 2 June 1998 Revised version received: 16 November 1998 Accepted: 17 November 1998     

Bioisosterism: Interchange of 4-OH to 4-NH2 in vanillin or homovanillin ring of capsaicinoids

A series of 4-amino Capsaicin analogs 15, 17 and 19 were prepared to investigate the bioisosteric effect of 4-amino group, and all these compounds exhibited moderate or weak potency from their analgesic test. From our previous results and others, 4-hydroxyl group as well as 3-methoxy substituent could be crucial for high analgesic activity. This biological result also shows that the activity is sensitive to alkyl chain length in hydrophobic region and the phenylacetic amides 19 are more active than the corresponding urea derivatives 17.     

Chiral separation of β-blockers after derivatization with (−)-menthyl chloroformate by reversed-phase high performance liquid chromatography

Optimum conditions of chiral derivatization reaction of beta-blockers acebutolol, arotinolol, beta-xolol, bisoprolol, celiprolol, metoprolol and pindolol) with (-)-menthyl chloroformate were investigated for the resolution by HPLC. With more than 30 times molar excess of (-)-menthyl chloroformate chiral derivatization reactions were completed within one hour at room temperature except arotinolol and celiprolol. Diastereomeric derivatives of beta-blockers were well resolved on the ODS column using acetonitrile-methanol-water as a mobile phase.     

Synthesis of 4-hydroxy-1-thiocoumarin derivatives-1: An efficient synthesis of thioflocoumafen

An efficient procedure for the preparation of 4-hydroxy-3-{1,2,3,4-tetra-hydro-3-[4-(4-triflu-oromethylbenzyl oxy)phenyl]-1-naphthyl}thiocoumarin (thioflocoumafen, 1a and 1b) is described. The key step in the synthesis involves the condensation reaction of 3-(4-methoxyphenyl)-1-tetralol (2) with 4-hydroxy-1-thiocoumarin (3).