不同手术方式治疗青光眼的临床疗效比较

目的探讨单纯小梁切除术与复合式小梁切除术治疗青光眼的临床疗效。方法将2015年6月~2016年5月我院收治行手术治疗的74例青光眼患者作为研究对象,按手术方案不同分为两组,A组行单纯小梁切除术,B组行复合式小梁切除术,评价比较两组临床治疗效果。结果 B组浅前房发生率为5.40%明显低于A组的24.32%,功能性滤过泡率为91.89%明显高于A组的72.97%,眼压完全控制率为89.19%明显高于A组的64.86%,差异均有统计学意义(均P0.05)。结论复合式小梁切除术治疗青光眼的临床疗效较单纯小梁切除术更为显著。     

New therapies to treat inherited cardiomyopathies are on the way

Netherlands Heart Journal -     

NO way to live; the various roles of nitric oxide in plant-pathogen interactions

Nitric oxide has attracted considerable interest from plant pathologists due its established role in regulating mammalian anti-microbial defences, particularly via programmed cell death (PCD). Although NO plays a major role in plant PCD elicited in response to certain types of pathogenic challenge, the race-specific hypersensitive response (HR), it is now evident that NO also acts in the regulation of non-specific, papilla-based resistance to penetration by plant cells that survive attack and, possibly, in systemic acquired resistance. Equally, the potential roles of NO signalling/scavenging within the pathogen are being recognized. This review will consider key defensive roles played by NO in living cells during plant-pathogen interactions, as well as in those undergoing PCD.     

Thermoregulation: an orphan receptor finds its way in the cold

The hypometabolic state of torpor is a widely utilized and well-orchestrated response to food shortage. A new study shows that the melatonin-related orphan receptor GPR50 plays an important function in metabolic regulation for entry into torpor.     

Secretion as a way to form enterocyte homeostasis

The contents of K, Cl and Na in the mucus containing compartments of rat small intestine epithelium were examined with X-ray microanalysis. Measurements of concentration were made on sections prepared according to techniques based on cryofixation of soft biological tissues. The concentration of potassium and chlorine within the brush border region and in the secretion product of goblet cells is 200 mM and 90 mM, respectively, while sodium concentration was lower than the detection limit of 20 mM of the method used.     

简易唾液收集器的制作

从口腔自然流出的唾液,在短时间内不能获得较多的量,而且其中常会含有杂质。为了获得较多、纯净的唾液,俄国生理学家研制了克拉斯诺格尔斯基氏囊,但其制作和使用较为复杂。现介绍一个简易的唾液收集方法。     

Dehydration of earthworm cocoons exposed to cold: a novel cold hardiness mechanism

Mechanisms involved in cold hardiness of cocoons of the lumbricid earthworm Dendrobaena octaedra were elucidated by osmometric and calorimetric studies of water relations in cocoons exposed to subzero temperatures. Fully hydrated cocoons contained ca. 3 g water · g dry weight^-1; about 15% of this water (0.5 g·g dry weight^-1) was osmotically inactive or bound. The melting point of the cocoon fluids in fully hydrated cocoons was-0.20°C. Exposure to frozen surroundings initially resulted in supercooling of the cocoons dehydrated (as a result of the vapour pressure difference at a given temperature between supercooled water and ice) to an extent where the vapour pressure of water in the body fluids was in equilibrium with the surrounding ice. This resulted in a profound dehydration of the cocoons, even at mild freezing exposures, and a concomitant slight reduction in the amount of osmotically inactive water. At temperatures around-8°C, which cocoons readily survive, almost all (>97%) osmotically active water had been withdrawn from the cocoons. It is suggested that cold injuries in D. octaedra cocoons observed at still lower temperatures may be related to the degree of dehydration, and possibly to the loss of all osmotically active water. The study indicates that ice formation in the tissues is prevented by equilibrating the body fluid melting point with the exposure temperature. This winter survival mechanism does not conform with the freeze tolerance/freeze avoidance classification generally applied to cold-hardy poikilotherms. Implications of this cold hardiness mechanism for other semi-terrestrial invertebrates are discussed.Abbreviations DSC differential scanning calorimetry - dw dry weight - MP melting point(s) - II water potential - R universal gas constant - T absolute temperature - V specific volume of water