喷淋式饱和结晶器处理渗沥液吹脱氨制备硫酸铵结晶的试验探索

介绍了自制的一体化喷淋式饱和结晶器,通过对试验条件的测试及硫酸铵结晶产品的检验,验证了设备的可靠性及最佳工作条件。通过实验得到工程化运行的相关参数、产品质量及运行中可能出现问题的解决方案。     

花粉治疗前列腺疾病的物质基础研究进展

国内外临床实践均证明花粉及其制剂是治疗前列腺疾病的理想药物。通过查阅国内外有关花粉治疗前列腺疾病的活性物质的有关文献,结果发现花粉治疗前列腺疾病的药效成分主要是其组分中的脂肪酸、多酚及黄酮类、甾体以及含氮化合物。综述了花粉治疗前列腺疾病的物质基础研究进展及作用机制研究,以期为开发高效低毒的治疗前列腺疾病的花粉制剂提供借鉴。     

大豆光敏不育系88-428的小孢子和花粉发育的细胞学观察

以普通栽种黄圆豆为对照,对作为保持系88-428的花粉发育全过程及其药壁组织的情况进行了系统的研究.结果表明：①可将这一过程划分为7个时期,即小孢子母细胞形成期、小孢子母细胞减数分裂期、单核早期、单核中期、单核晚期、二胞花粉早期、二胞花粉晚期;②作为保持系的88-428与黄圆豆相比,存有较高的败育率,表现为低不育.     

煤尘抽提物诱发BALB/3T3A31-1-13细胞系形态转化的研究

本文用 BALB/3T3 A31-1-13细胞系研究了煤尘抽提物的转化活性。亚硝化和未亚硝化的煤尘抽提物都能诱发细胞发生转化且有剂量反应关系.但亚硝化煤尘抽提物的转化活性比未亚硝化者高。从转化集落分离出来的细胞具有赘生转化的一些特征,如细胞生长迅速、接触抑制消失和停泊不依赖性生长等.本文结果看来支持煤矿工胃癌高发原因的煤尘假说。     

单味中药抑制胃癌细胞株体外增殖作用的实验研究进展

胃癌是我国最常见的恶性肿瘤之一,传统中医药治疗肿瘤具有低毒、有效、价廉等特点,成为筛选胃癌防治药物的较理想研究领域。本文按照单体、单味中药提取的有效成分的分类将近几年来单味中药抑制人胃癌细胞株体外增殖作用的实验基础研究近况做一综述,为进一步的相关研究提供参考依据及确定方向,从而筛选出疗效肯定有应用前景的中药有效成分(或单体),充分发挥中药作用范围广、副作用小的优势,使中医药在治疗胃癌方面发挥更大的作用。     

长期服用银杏叶片治疗突发性耳聋的远期疗效观察

目的：观察长期服用银杏叶片治疗突发性耳聋的临床效果。方法将60例突发性耳聋患者随机分为对照组和治疗组,每组30例。两组患者均接受口服泼尼松加前列地尔静脉滴注等常规治疗14 d;治疗组在常规治疗基础上加用口服银杏叶片治疗1年,一次1片,3次/d。分别于开始治疗、治疗第14天、治疗第3个月及治疗后1年评估相关症状及复查电测听。结果治疗第14天两组患者无论听力或者耳鸣等症状,组间差异均无统计学意义(P>0.05);治疗后3个月及治疗后1年听力疗效方面,治疗组有效率分别为76.7%(23/30)及83.3%(25/30);对照组有效率分别为50.0%(15/30)及60.0%(18/30),差异均有统计学意义(P<0.05)。治疗后1年,35例伴发耳鸣者,治疗组耳鸣改善率为66.7%(12/18),对照组改善率为29.4%(5/17),差异有统计学意义(P<0.05)。结论长期口服银杏叶片治疗突发性耳聋方法简便,具有确切的远期疗效,用药安全,值得临床推广。     

Effects of extract of Ginkgo biloba with venlafaxine on brain injury in a rat model of depression

Background Recent studies have indicated that chronic stress may give rise to brain damage,which is related to the genesis of depression. The purpose of this study is to investigate the effects of extract of Ginkgo biloba (EGb) and venlafaxine on depression. Methods Rats were treated with chronic and comprehensive stress to create a depression model. Immunohistochemistry was used to detect the expression of brain-derived neurotrophic factor (BDNF) in the hippocampal CA3 neurons of rats treated with different drugs. Behavioral changes of these rats were also examined.Results The expression of BDNF in the hippocampal CA3 neurons of the depression model decreased with a reduction in exploring behavior and a significant increase in fecal production. The expression of neuron nitricoxide synthase (nNOS) protein also increased in the rats compared to normal controls. The rats treated with EGb and venlafaxine showed an increase in expression of BDNF and exploring behavior compared to untreated rats, but a decrease in nNOS and fecal production. Conclusions Rats sustain damage to the brain after being subjected to chronic and comprehensive stress. Our research has indicated that combined EGb with venlafaxine enhances the protection of neurons and decreases damage to the brain, while relieving the side effects of synthetic antidepressants.     

The Administration of Panax Ginseng Berry Extract Attenuates High-Fat-Diet-Induced Sarcopenic Obesity in C57BL/6 Mice

Sarcopenia and obesity are serious health problems that are highly related to several metabolic diseases. Sarcopenic obesity, a combined state of sarcopenia and obesity, results in higher risks of metabolic diseases and even mortality than sarcopenia or obesity alone. Therefore, the development of therapeutic agents for sarcopenic obesity is crucial. C57BL/6 mice were fed with a high-fat diet (HFD) for 9 weeks. Then, mice were administered with Panax ginseng berry extract (GBE) for an additional 4 weeks, with continuous HFD intake. GBE significantly decreased the food efficiency ratio, serum lipid and insulin levels, adipose tissue weights, and adipocyte size. It significantly increased the grip strength, muscle masses, and myofiber cross-sectional area. It deactivated the protein kinase C (PKC) theta and zeta, resulting in activation of the phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt) pathway, which is known to regulate muscle synthesis and degradation. Furthermore, it inhibited the production of inflammatory cytokines in the muscle tissue. GBE attenuated both obesity and sarcopenia. Thus, GBE is a potential agent to prevent or treat sarcopenic obesity.     

I can't sleep at night with discharging this lady: The personal impact of ending therapy on speech-language pathologists

The ending of therapy is a crucial time for speech-language pathologists and can impact on their sense of achievement and satisfaction. Drawing on literature from psychotherapy, social work and rehabilitation as well as from the area of aphasia therapy, this paper explores how speech-language pathologists juggle the tensions of coping with real versus ideal endings, of managing the building of close therapeutic relationships which then have to be broken, and of balancing a respect for client autonomy while retaining control over caseloads and fair allocation of resources. I suggest that the way in which therapy finishes reflects a merger of how clinicians manage these tensions. Clinicians may benefit from a greater recognition of what they do and feel at discharge, not only to further reflective practice, but also to encourage more sensitive involvement with both clients and students.