介绍一种大鼠脑中γ—氨基丁酸受体的检测方法

目的：介绍一种大鼠脑中γ＝氨基丁酸本的快速简便的检测方法。方法：用＾３Ｈ－ＧＡＢＡ为配体来检测大鼠脑神经末梢微囊中的ＧＡＢＡ受体。检测ＧＡＢＡ受体的合适条件是１．０×１０＾－３ｍｏｌ／Ｌ的脑膜蛋白在３７℃下反应３０ｍｉｎ。结果：大鼠脑中存在ＧＡＢＡ受体,Ｋｄ＝（９７．３±５．８）×１０＾－９ｍｏｌ／ｇ蛋白±０．０１０３×１０＾－９ｍｏｌ／ｇ蛋白,属低亲和力受体。结论：用＾３Ｈ－ＧＡＢＡ可以检测大鼠     

芹灵冲剂的退黄降酶作用

目的：观察芹灵冲剂的退黄降酶作用,以评价芹灵冲剂的退黄降酶效果。方法：在四氯化碳（ＣＣｌ４）、Ｄ－半乳糖胺（Ｄ－Ｇａｌａ）和α－萘异硫氰酸酯（ＡＮＴＴ）３种化学性肝损伤大鼠模型和在体乙型肝炎（ＤＨＢＶ）鸭,和全自动生化测定仪分别测定动物的肝功能。结果：芹灵冲剂５ｇ．ｋｇ＾－１和１０ｇ．ｋｇ．＾－１能显降低ＣＣｌ４和Ｄ－Ｇａｌａ肝损伤大鼠血清谷丙转氨酶（ＡＬＴ）水平。能明显降低ＡＮＴＴ 损伤大鼠血     

介绍一种大鼠脑中γ-氨基丁酸受体的检测方法

目的：介绍一种大鼠脑中γ－ 氨基丁酸受体的快速简便的检测方法。方法：用３Ｈ－ ＧＡＢＡ 为配体来检测大鼠脑神经末梢微囊中的ＧＡＢＡ受体。检测ＧＡＢＡ受体的合适条件是１．０ ×１０－３ｍｏｌ／Ｌ的脑膜蛋白在３７℃下反应３０ ｍｉｎ。结果：大鼠脑中存在ＧＡＢＡ受体,Ｋｄ＝ （９７．３±５．８） ×１０－９ｍｏｌ／Ｌ,Ｂｍａｘ ＝０．１０６１ ×１０－９ｍｏｌ／ｇ 蛋白±０．０１０３×１０ －９ｍｏｌ／ｇ 蛋白,属低亲和力受体。结论：用３Ｈ－ ＧＡＢＡ可以检测大鼠脑中的ＧＡＢＡ受体。     

甘草酸单铵对输卵管炎大鼠免疫功能的影响

目的：观察甘草酸单铵（ＭＡＧ）对输卵管炎大鼠模型免疫功能的影响，探讨其作用机理，方法：将苯酚糊剂注入大鼠子宫角制备输卵管炎模型进行治疗，结果：高、低２个ＭＡＧ剂量组（１００ｍｇ．ｋｇ＾－１和５０ｍｇ．ｋｇ＾－１）大鼠网状内皮系统吞噬功能的显高于对照组（蒸馏水２ｍ／只和消炎痛５ｍｇ．ｋｇ＾－１）。同时，２个ＭＡＧ治疗组大鼠外周血中性白细胞百分比均显低于蒸馏水对照组，高一ＭＡＧ组大鼠淋巴细胞百分比显同于蒸馏水对照组，其大鼠输卵管通畅率也明显高于蒸馏水对照组，结论：甘草酸单铵对实验性输卵管炎大鼠免疫功能具有明显的促进作用且有剂量依赖关系，这可能是ＭＡＧ治疗大鼠输卵管炎的主要机理之一。     

有机磷酸酯类化合物对大鼠GABA受体影响的体内研究

目的 :探索有机磷酸酯类化合物急性中毒的 -氨基丁酸能系统机理 ,为有机磷酸酯类化合物急性中毒的治疗提供理论依据。方法 :采用大鼠脑神经末梢微囊GABA受体为模型 ,大鼠体内染毒 ,观察动物抽搐发作和不发作时GABA受体的变化。结果 :大鼠皮下注射梭曼 99μg·kg 1或二嗪农灌胃 1.0 95g·kg 1,发现3 H GABA的结合值在抽搐发作时显著降低 ;或大鼠腹腔注射丙氟磷 6mg·kg 1,3 H GABA的结合值显著降低。结论 :有机磷酸酯类化合物在一定浓度下能显著降低大鼠脑GABA受体的结合 ,GABA受体参与了某些有机磷酸酯类化合物的急性中毒过程。     

氧惊厥大鼠脑突触体和线粒体脂质过氧化物和氨基酸递质水平的变化

观察高压氧（ＨＢＯ）惊厥大鼠脑突触体、线粒体的脂质过氧化物（ＬＰＯ）和突触体氨基酸递质水平的变化，以及抗氧化剂还原型谷胱甘肽（ＧＳＨ）预防氧惊厥的作用及其机理的探讨。方法实验用ＳＤ大白鼠，分为对照组（常压空气）、ＨＢＯ组（０．５５ＭＰａ，３０ｍｉｎ）和ＧＳＨ加ＨＢＯ组。进氧舱前３０ｍｉｎ，按８ｍｍｏｌ／ｋｇ腹腔内注射ＧＳＨ溶液或等容积０．９％ＮａＣｌ。按Ｇｒａｙ和Ｗｈｉｔｔａｋｅｒ方法制备突触体和线粒体，以Ｏｈｋｗａ方法测定ＬＰＯ含量与王自勉等方法测定突触体内氨基酸含量。结果ＨＢＯ组大鼠脑突触体和线粒体的ＬＰＯ含量显著增加，而突触体内Ｙ－氨基丁酸（ＧＡＢＡ）、牛磺酸（ｔａｕｒｉｎｅ）含量显著下降；氧暴露前预先给予ＧＳＨ，可防止ＨＢＯ引起的突触体内ＧＡＢＡ水平的降低，减少突触体ＬＰＯ的生成。结论氧惊厥的发生与脑内氧自由基生成增加，引起突触体和线粒体膜脂质过氧化作用增强，以及神经递质代谢紊乱有关。     

测定人尿液样品中微量沙林和梭曼降解产物的核磁共振 …

目的：测定人尿液样品中微量沙林和梭曼降解产物。方法：＾１Ｈ－ＮＭＲ和＾１９Ｆ－ＮＭＲ。结果和结论：创新建立了选择性双重自旋回波＾１Ｈ－ＮＭＲ和定量氟离子＾１９Ｆ－ＮＭＲ技术，并且利用它们互相补充选择性检测有关毒剂降解产物中烷基甲膦酸的特征甲基质子、氟离子及其含量。本方法具有简便、快速、灵敏等特点，尿液样品分析不需要分离、提取和衍生化，毒剂无损失。通过ＦＩＤ信号累加测定，烷基甲膦酸和氟离子的检测限可     

三倍量(0.3mmol/kg)国产Gd-DTPA增强MR探查脑膜转移瘤的研究

目的 评价三倍量（０．３ｍｍｏｌ／ｋｇ）国产Ｇｄ－ＤＴＰＡ增强ＭＲ探查脑膜转移瘤的效果。材料与方法 用国产Ｇｄ－ＤＴＰＡ三倍量增强ＭＲ检查１１０例临床怀疑脑转移瘤患者。先行平扫,然后静脉注射常规量（０．１ｍｍｏｌ／ｋｇ）国产Ｇｄ－ＤＴＰＡ。注射后即刻行Ｔ１ＷＩ扫描,２０分钟后行延迟扫描。距第１次注射３０分钟后,再注射０．２ｍｍｏｌ／ｋｇ的Ｇｄ－ＤＴＰＡ,从而达到累积剂量０．３ｍｍｏｌ／ｋｇ。第２次     

有机磷毒剂对人脑谷氨酸受体的作用

本工作采用放射性配体结合实验方法，用健康意外死亡的人大脑额叶皮层突触膜作为受体源，３Ｈ－谷氨酸和３Ｈ－ＭＫ８０１作为标记配体在体外研究了人脑皮层ＮＭＤＡ受体的特性及有机磷毒剂对受体结合的影响。人大脑皮层膜与３Ｈ－谷氨酸有一特异性的可饱合性结合。特异性结合表现为单一结合位点，ＫＤ值和Ｂｍａｘ值分别为１０３ｎｍｏｌ／Ｌ和１．６７ｐｍｏｌ／ｍｇ蛋白。谷氨酸受体激动剂对人大脑皮层与谷氨酸结合的抑制强度依次为Ｌ－Ｇｌｕ＞ＤＬ－Ｇｌｕ＞ＫＡ＞ＮＭＤＡ＞Ｄ－Ｇｌｕ。谷氨酸受体亚型拮抗剂ＡＰ５和ＤＮＱＸ（１μｍ…     

梭曼对大鼠摄食活动的影响

采用记录大鼠每日摄食量的方法研究梭曼及抗毒药对大鼠摄食活动的影响。实验结果表明“大鼠肌注梭曼０．０３５ｍｇ／ｋｇ（０．６ＬＤ５０）使当日摄食量下降３８．３％，抑制作用持续５ｄ，丘脑－下丘脑ＡＣｈＥ活力下降４９，中毒后１０ｄ尚不能完全恢复，梭曼抑制摄食与其抑制ＡＣｈＥ活力的作用时间相一致，阿托品１０ｍｇ／ｋｇ肌注，可使大鼠当日摄食量下降２１．６％，次日增加１２％，以后恢复正常，ＨＩ－６１０ＭＧ／ＫＧ     

成批煤气爆燃烧伤的救治体会

报道治疗因煤气泄漏爆炸烧伤病员7例，经应用MEBT技术积极救治，其中6例于伤后17天痊愈出院，另一例特重伤员也于伤后30天康复出院。作者认为：应严格按照MEBT／MEBO要求进行规范治疗，正确处理生命体征、休克、感染、脏器功能和创面的辨证关系。同时，不能忽视外科营养在过程中的重要作用，它是创面修复的物质保证。     

Glutamine supplementation in vitro and in vivo,in exercise and in immunodepression

In situations of stress, such as clinical trauma, starvation or prolonged, strenuous exercise, the concentration of glutamine in the blood is decreased, often substantially. In endurance athletes this decrease occurs concomitantly with relatively transient immunodepression. Glutamine is used as a fuel by some cells of the immune system. Provision of glutamine or a glutamine precursor, such as branched chain amino acids, has been seen to have a beneficial effect on gut function, on morbidity and mortality, and on some aspects of immune cell function in clinical studies. It has also been seen to decrease the self-reported incidence of illness in endurance athletes. So far, there is no firm evidence as to precisely which aspect of the immune system is affected by glutamine feeding during the transient immunodepression that occurs after prolonged, strenuous exercise. However, there is increasing evidence that neutrophils may be implicated. Other aspects of glutamine and glutamine supplementation are also addressed.     

新疆石河子地区奶牛隐性乳房炎的调查与分析

采用LMT法对新疆石河子地区三个规模化奶牛场泌乳牛群进行了隐性乳房炎检测,共检测994头泌乳牛3976个乳区.结果表明:奶牛隐性乳房炎阳性率为81.9%,乳区阳性率为49.1%.数据分析表明,不同年龄、胎次以及有无卧床奶牛的隐性乳房炎阳性率差异显著(P<0.05),后乳区的隐性乳房炎感染率显著高于前乳区感染率(P<0.05),隐性乳房炎乳区发生数也明显影响当日产奶量(P<0.05).     

Sex differences in neuromuscular fatigability in response to load carriage in the field in British Army recruits

Objectives

Women are resistant to neuromuscular fatigue compared to men in response to a range of exercise tasks. The sex differences in the neuromuscular responses to load carriage have yet to be investigated.

Decrease in eccentric hamstring strength in runners in the Tirol Speed Marathon

Background

The local muscular endurance of knee flexors, during eccentric work in particular, is important in preventing or delaying kinematic changes associated with fatigue during treadmill running. This result, however, may not be transferable to overground running.

Objective

To test the hypothesis that overground running is associated with eccentric hamstring fatigue.

Methods

Thirteen runners (12 male and one female) performed an isokinetic muscle test three to four days before and 18 hours after a marathon. Both legs were tested. The testing protocol consisted of concentric and eccentric quadriceps and hamstring contractions.

Results

There were no significant differences between peak torque before and after the race, except that eccentric peak hamstring torque (both thighs) was reduced.

Conclusion

Overground running (running a marathon) is associated with eccentric hamstring fatigue. Eccentric hamstring fatigue may be a potential risk factor for knee and soft tissue injuries during running. Eccentric hamstring training should therefore be introduced as an integral part of the training programme of runners.     

肺心病慢性呼吸性酸中毒合并代谢性酸碱失衡判断方法探讨(附80例次血气分析)

目的：对42例肺心病慢性呼吸性酸中毒患者的80例次血气测定结果。方法：用不同的酸碱图（卡）及代偿公式进行酸碱类型的初步差别分析。结果：结合临床表现、各种影响因素与治疗反应等作出综合判定。结论：比较二种判定的差异，并提出较为实用、可靠的判断建议，以助于复合型呼吸性酸碱失衡的临床诊断与处理。     

Oxalosis in primary hyperoxaluria in infancy

Primary hyperoxaluria (PH1) is a rare inborn autosomal recessive metabolic disorder due to the deficiency of hepatic alanine-glyoxylate-aminotransferase. This deficiency results in excessive synthesis and urinary excretion of oxalate, inducing renal stone formation and deposition of calcium oxalate in the kidney, bone, myocardium, and vessels (systemic oxalosis, SO) in the most severely affected individuals. We report renal and skeletal changes in a 3-month-old girl with PH1 and SO. Intense cortico-medullary hyperechogenicity and increased homogeneous radiopacity of normal-sized kidneys suggested the diagnosis of SO. Skeletal survey showed osteopenia and characteristic symmetrical metaphyseal transverse bands in long bones, progressively becoming more dense and migrating towards the diaphysis. Multiple pathological and slowly healing fractures of the limbs occurred at the dense band level. A radiopaque rim was then observed in flat bones, epiphyseal nuclei, and vertebral bodies. Inflammatory granulomatous reaction, induced by the presence of oxalate crystals in the marrow spaces, coexisted with progressively evident radiological signs of secondary hyperparathyroidism, with partially overlapping features. The patient was treated by peritoneal dialysis and hemodialysis until combined liver–kidney transplantation. There are no previous reports of infants treated with hemodialysis for more than 2 years.     

Interventional radiology in oncology in private practice

Interventional oncology in private practice requires expert training and can be performed in a stand-alone facility for type 1 procedures in a hospital setting for type 2 and 3 procedures where subspecialized radiologists, state-of-the-art equipment, and postprocedure hospital monitoring are available. A multidisciplinary effort with oncologists, internal medicine physicians and anesthesiologists is necessary. The practice of interventional oncology requires around the clock availability, meticulous and established protocols and procedures and a financial investment. On the other hand, it is professionally gratifying because of constant technical advances and the impact on patients.