酵母菌2号培养最佳条件的选择

成人特发性乳糖酶缺乏症的发生率极高，这些人进食牛奶后会出现胃肠胀气、腹痛、腹泄等对牛奶不耐受的消化不良症状。为解决这一问题，自１９８９年起，国内外不少学者是主张有产替代疗法，即将人工培养制备纯化的乳糖酶直接加入牛奶中以水解其中的乳糖来弥补成人乳糖酶的缺乏。     

补充乳糖酶对轮状病毒肠炎病情影响的研究

目的：观察补充乳糖酶对轮状病毒肠炎病情的影响。方法：将71例轮状病毒肠炎患儿随机分成乳糖酶治疗组与对照组,乳糖酶治疗组加用乳糖酶口服,观察两组疗效及疗程。结果：乳糖酶治疗组总有效率94.4%,对照组总有效率74.3%,两组治疗总有效率差异有统计学意义（P<0.01）。乳糖酶治疗组在疗程上也比对照组缩短（P<0.01）。结论：补充乳糖酶治疗轮状病毒肠炎可明显提高疗效,缩短疗程。     

“更眠安汤”治疗肾阴虚型女性更年期失眠的临床疗效

目的 :观察自拟"更眠安汤"治疗肾阴虚型更年期失眠的临床疗效。方法 :选择2012年6月至2014年3月以失眠为主诉的女性更年期综合征患者36例,给予"更眠安汤"治疗,4周为1个疗程,共服用2个疗程。采用匹兹堡睡眠质量指数量表和中医证候积分评估患者治疗第4周和第8周时的临床疗效,并进行比较。结果 :治疗第4周和第8周时的总有效率分别为86.11%(31/36)和91.67%(33/36),主要睡眠指标较治疗前均有改善,差异有统计学意义(P<0.05);除夜间多梦指标外,治疗第8周时较第4周的其余睡眠指标均更佳,差异有统计学意义(P<0.05)。结论 :"更眠安汤"治疗女性更年期失眠症疗效确切,治疗8周的临床疗效更显著。     

Intestinal Disaccharidase Deficiency Without Villous Atrophy May Represent Early Celiac Disease

Background: Intestinal disaccharidase activities are decreased in untreated celiac disease and also in other conditions without villous atrophy. Of 908 patients examined for suspected malabsorption, 37 (4.1%) had generalized disaccharidase deficiency without villous atrophy. The aim was to determine if generalized disaccharidase deficiency without villous atrophy represented latent celiac disease. Methods: Case notes and histology of the 37 patients were reviewed. History and blood investigations including antigliadin and endomysial antibodies were checked. Where celiac disease was suspected, endoscopic duodenal biopsies for histology and disaccharidase estimation were repeated. Results: Of the initial 37 patients, 6 patients had had repeat endoscopic biopsies; one having celiac disease. A further 18 patients were reviewed. The remainder declined further investigation. Eight had repeat endoscopic duodenal biopsies; one had celiac disease. Two with positive celiac serology also had enteroscopy with jejunal biopsies; both had celiac disease. Conclusions: At least 11% of patients with generalized disaccharidase deficiency without villous atrophy develop celiac disease. Enteroscopic biopsies from distal duodenum and proximal jejunum should be considered as the next investigation if endomysial or antigliadin antibodies are positive.     

Intestinal lactase activity and calcium absorption in the aging female with osteoporosis

Summary In 11 postmenopausal women with histologically proven osteoporosis and normal lactose tolerance a direct correlation between calcium absorption and intestinal lactase activity was observed. The results suggest that varying degrees of relative deficiencies in intestinal lactase might contribute to the graded decrease in calcium absorption which characterizes the aging female population.     

Molecularly defined adult-type hypolactasia among working age people with reference to milk consumption and gastrointestinal symptoms

AIM: To study milk consumption and subjective milk- related symptoms in adults genotyped for adult-type hypolactasia. METHODS: A total of 1900 Finnish adults were genotyped for the C/T-13910 variant of adult-type hypolactasia and filled in a structured questionnaire concerning milk consumption and gastrointestinal problems. RESULTS: The C/C-13910 genotype of adult-type hypolactasia was present in 18% of the study population. The prevalence of the C/C-13910 genotype was higher among subjects who were undergoing investigations because of abdominal symptoms (24%, P < 0.05). Those with the C/C-13910 genotype drank less milk than subjects with either the C/T-13910 or the T/T-13910 genotype of lactase persistence (18% vs 38%; 18% vs 36%, P < 0.01). Subjects with the C/C-13910 genotype had experienced more gastrointestinal symptoms (84%) during the preceding three-month period than those with the C/T-13910 (79%, P < 0.05) or the T/T-13910 genotype (78 %, P < 0.05). Only 9% (29/338) of the subjects with the C/C-13910 genotype consumed milk and reported no symptoms from it.CONCLUSION: Gastrointestinal symptoms are more common among adults with the C/C-13910 genotype of adult-type hypolactasia than in those with genotypes of lactase persistence.     

Single nucleotide polymorphism C/T(-13910), located upstream of the lactase gene, associated with adult-type hypolactasia: validation for clinical practice

ObjectivesTo validate C/T_-13910 polymorphism associated with primary hypolactasia for clinical practice.Design and methodsLactose breath test and PCR-RFLP for the C/T_-13910 polymorphism were performed.ResultsTwenty-seven of 28 patients with genotype CC had positive breath tests; all twenty-two patients with genotypes CT or TT had negative breath tests. Agreement of tests was high (p < 0.0001; Kappa Index 0.96).ConclusionC/T_-13910 polymorphism detection may be a new tool for primary hypolactasia diagnosis.     

含乳糖酶冻干酵母制剂的研究

在研制双糖酶肠溶微囊及乳糖酶复合微囊的同时,我组还研制了含乳糖酶冻干酵母,具有成本低廉而利用广、酶活性高而稳定、生产流程短而简便等优点.该冻干酵母可制备成含乳精酶冻干酵母抗酸肠溶胶囊,该抗酸肠溶胶囊置人工胃液中2h,乳糖酶剩余活性仍在60%以上;置人工肠液中lh,乳糖酶释放率达100%.     

气虚血瘀证组学研究进展

气虚血瘀证是中医临床中常见的证候类型,它可存在于临床各种慢性疾病发展过程中。组学是一门近年来研究比较热门的新型科学,它是对各类研究对象（一般为生物分子）的集合所做的系统性研究,本文从基因组学,蛋白质组学、代谢组学等组学范畴对气虚血瘀证进行系统生物学方面的研究,为人们对本证的客观化,标准化认识提供科学理论基础。     

胰岛素对子宫内生长迟缓新生仔猪小肠生长发育的影响

目的:研究胰岛素是否能促进子宫内生长迟缓(IUGR)新生儿肠道的生长发育. 方法:以IUGR新生仔猪为模型,比较了饲喂配方奶粉(P组)和配方奶粉中补加胰岛素(I组)3天后仔猪小肠的重量和长度,组织形态学结构,黏膜DNA、RNA含量和浓度及小肠黏膜麦芽糖酶、乳糖酶、氨基肽酶和碱性磷酸酶的活性. 结果:I组与P组相比,小肠的重量、长度、组织形态学结构及小肠黏膜氨基肽酶和碱性磷酸酶的活性差异均无显著性意义(P>0.05).但I组的仔猪小肠黏膜DNA、RNA含量及麦芽糖酶和乳糖酶的活性均较P组有明显的提高(P<0.05). 结论:口饲胰岛素能刺激小肠黏膜上皮细胞的增生和小肠黏膜麦芽糖酶、乳糖酶总活性的升高.