金双歧治疗新生儿高胆红素血症52例临床观察

目的探讨双歧杆菌制剂“金双歧”辅助治疗新生儿高胆红素血症的疗效,以找出能及早有效地纠正新生儿高胆红素血症,预防新生儿胆红素脑病发生的新方法。方法将52例新生儿黄疸病例随机分为“金双歧”治疗观察组32例和常规治疗对照组20例,观察组在常规治疗的基础上同时加用“金双歧”片剂口服。结果“金双歧”治疗观察组25例显效,4例有效,总有效率为91%;常规治疗对照组15例显效,2例有效,总有效率为85%,2组总疗效比较差异无显著性(χ2=0.38,P>0.05)。但治疗后,“金双歧”治疗观察组胆红素开始下降时间为(2.5±0.5)d,常规治疗对照组为(3.6±0.2)d,治疗观察组明显优于常规治疗对照组(t=9.17,P<0.01);“金双歧”治疗观察组黄疸消退时间为(3.5±0.6)d,常规治疗对照组为(5.2±0.85)d,治疗观察组明显优于常规治疗对照组(t=8.5,P<0.01)。结论双歧杆菌制剂“金双歧”辅助治疗新生儿高胆红素血症,疗效好,可迅速降低血清总胆红素值,缩短治疗时间,无任何毒副作用,值得临床推广使用。     

金帝王蔓绿绒的组织培养和快速繁殖

1　植物名称　金帝王蔓绿绒 (Ｐｈｉｌｏｄｅｎｄｒｏｎｅｒｕｂｅｓｃｅｎｓ“ＩｍｐｅｒｉａｌＧｏｌｄｅｎ”)。2　材料类别　顶芽、茎段侧芽。3　培养条件　培养基 :(1 )ＭＳ 6 ＢＡ2ｍｇ·Ｌ- 1(单位下同 ) ＮＡＡ 0 .2 ;(2 )ＭＳ 6 ＢＡ 4 ＮＡＡ0 .2 ;(3 )ＭＳ 6 ＢＡ 0 .5 ＮＡＡ 0 .5。以上培养基均加入 3 %白砂糖和 0 .7%琼脂 ,ｐＨ 5 .8。于温度(2 6± 1 )℃、连续 1 2ｈ散射光下培养。4　生长与分化情况4.1　丛生芽的诱导　从盆栽的生长旺盛、无病虫害的金帝王植株上切取带顶芽和腋芽的茎段 ,除去叶片和叶柄 ,用刀削去…     

非营养吸吮和金双歧预防早产儿喂养不耐受115例分析

目的评价比较非营养吸吮和金双歧对促进早产儿胃肠功能成熟度,预防早产儿喂养不耐受的效果。方法回顾分析我院2004年6月至2008年3月收治的符合标准的115例早产儿,根据喂养干预措施分成非营养吸吮（NNS）组（38例）、金双歧组（42例）和对照组（35例）,组间胎龄、出生体重及Apgar评分均衡。NNS组常规干预外,生后6～12h开始NNS,在每次喂养前给予吸吮无孔橡皮奶头10min,7—8次／24h。金双歧组常规干预外,生后6—12h开始口服金双歧,每次0．5g,每Et3次。对照组常规干预。临床观察喂养不耐受发生情况,生后10d评价结果。结果各组喂养不耐受的发生率比较,NNS组明显低于对照组,差异有显著性（χ^2=6．510,P〈0．05）;金双歧组也明显低于对照组,差异有显著性（χ^2=5．840,P〈0．05）;NNS组比金双歧组发生率略低,但差异元显著性（χ^2=0．066,P〉0．05）。结论早期NNS或早期使用金双歧都可以明显降低喂养不耐受的发生,均可作为预防喂养不耐受的有效措施,两者效果相当。对于吸吮极差的极低或超低体重儿,早期NNS并不具有可操作性或不能达到足够的操作时间,而使用金双歧灌喂更具有操作性。     

"Golden blot"--detection of polyclonal and monoclonal antibodies bound to antigens on nitrocellulose by protein A-gold complexes

Protein A bound to particles of colloidal gold is widely used for cytochemical localization of antigens. A method for detecting immune complexes on "Western blots" with protein A-gold has been developed. It involved the following steps: (i) electrophoretic separation of proteins, (ii) transfer to nitrocellulose, (iii) incubation with antibodies, and (iv) staining with protein A-gold. The amount of antigen detectable was 10-50 ng. The sensitivity could be improved by subsequent photochemical silver staining (1-10 ng detected), and was then comparable to autoradiograms using iodinated protein A.     

Golden Rice and ‘Golden’ crops for human nutrition

Micronutrients are essential for a healthy life. Humans do not produce micronutrients, and hence they must obtain them through the foodchain. Staple crops are the predominant food source of mankind, but need to be complemented by other foodstuffs because they are generally deficient in one or the other micronutrient. Breeding for micronutrient-dense crops is not always a viable option because of the absence of genetic variability for the desired trait. Moreover, sterility issues and the complex genetic makeup of some crop plants make them unamenable to conventional breeding. In these cases, genetic modification remains the only viable option. The tools to produce a number of micronutrients in staple crops have recently become available thanks to the identification of the genes involved in the corresponding biochemical pathways at an unprecedented rate. Discarding genetic modification as a viable option is definitely not in the interest of human wellbeing.     

Purification and characterization of a heat-stable serine protease inhibitor from the tubers of new potato variety "Golden Valley"

Potide-G, a small (5578.9 Da) antimicrobial peptide, was isolated from potato tubers (Solanum tuberosum L. cv. Golden Valley) through extraction of the water-soluble fraction, dialysis, ultrafiltration and DEAE-cellulose and C₁₈ reverse-phase high performance liquid chromatography. This antimicrobial peptide was heat-stable and almost completely suppressed the proteolytic activity of trypsin, chymotrypsin and papain, with no hemolytic activity. In addition, potide-G potently inhibited growth of a variety of bacterial (Staphylococcus aureus, Listeria monocytogenes, Escherichia coli, and Clavibacter michiganense subsp. michiganinse) and fungal (Candida albicans and Rhizoctonia solani) strains. Matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry revealed that the N-terminal sequence (residues from 1 to 11) of the protein is identical to that of potato proteinase inhibitor, a member of the Kunitz superfamily. And like other members of this class of protease inhibitor, potide-G may have a number of beneficial and therapeutic uses.     

A Golden Age for Adhesion

It is 70 years since the embryologist Warren Lewis noted the fundamental importance of adhesion to development and physiological function (Lewis, 1922). He wrote: “Were the various types of cells to lose their stickiness for one another and for the supporting extracellular white fibers, reticuli, etc., our bodies would at once disintegrate and flow off into the ground in a mixed stream of ectodermal, muscle, mesenchyme, endothelial, liver, pancreatic, and many other types of cells.” Underlying this striking piece of imagery are a number of remarkable phenomena: (1) in order to differentiate in the first place, cell precursors to those tissues had to adhere to each other, (2) cell adhesion and cell movement had to be coordinated in time and space, and (3) the physiology of both the cells and the tissues to which they contribute depends critically on the appropriate ordering of adhesion events.