Dietary plasma protein reduces small intestinal growth and lamina propria cell density in early weaned pigs

ABSTRACT We quantified the effects of a diet containing animal plasma protein on small intestinal growth and mucosal morphology in early weaned pigs. Ninety-six pigs [14 d old, 4 kg body weight (BW)] were assigned in groups of 32 to three dietary treatments as follows: 1) free access to control diet (C), 2) free access to plasma protein diet (P), and 3) plasma protein, pair-fed to C (PPF). Eight pigs from each group were killed at 2, 4, 8 or 16 d. Over a 16-d period, weight gain in the P group was 43% greater (P < 0.05) than that in C pigs; weight gain was similar in C and PPF groups. Protein intake in the P group was 33% higher (P < 0.05) than that in the PPF group; no significant difference was observed between the C and P groups. Dietary protein conversion efficiencies in both the P and PPF groups were approximately 18% greater (P < 0.05) than those in the C group. Intestinal masses in the three groups did not differ at 2, 4 and 8 d. By 16 d, the jejunal and ileal protein and DNA masses (mg/kg BW) in both the P and PPF groups were lower than those in the C group (P < 0.05). Dietary plasma protein did not affect crypt cell proliferation, crypt depth or villous height in either the jejunum or ileum. However, the intravillous lamina propria cell density in the jejunum was significantly lower (P < 0.05) in P and PPF pigs than in C pigs. Plasma urea concentrations were also 40 and 42% lower (P < 0.05) in the P and PPF groups, respectively, than in the C group. Our results indicate that dietary plasma protein reduces the cellularity of the lamina propria, but not epithelial cell surface of the small intestine. Feeding plasma protein also increased the efficiency of dietary protein utilization, in part, by decreasing amino acid catabolism.     

复合核黄素阻断治疗食管癌前增生的效果评价(报告之四)

作者曾报告在鹤壁市郊用复合核黄素阻断治疗食管癌前增生，初试断续12年，累积癌变率为5．8％（8／137），而相应时间的自然癌变率为14．9％（79／530）。又重复试验3年，总体及重增癌抑制率为57．1％及63．3％（P＜0．05）。现报告停疗2年复查结果：总体及重增癌抑制率分别降至33．3％及50．7％（P＞0．2）。各级人群分别统计结果发现：复合核黄素癌阻断作用因增生级别而异，在治疗期SSI的癌抑制率为68．4％（P＜0．05），停疗后仍有54．7％（X2＝3．82），对其他各级作用均不明显（P＞0．2）。从而提示复合核黄素主要抑制早期重增癌变，且必需长期坚持服用，方有使发病及死亡率下降可能。     

食管鳞状上皮细胞癌中P53基因突变的PCR-SSCP检测

应用PCR－SSCP银染技术检测了40例食管鳞状细胞癌p53基因第5、6、7和第8外显于的突变情况。结果显示：13例（32．5％）有p53基因突变，突变主要发生在第5和第8外显子，与癌分化程度无明显关系，但伴淋巴结癌转移病例中p53基因的突变率明显高于无转移者（P＜0．05）。本研究提示，p53基因突变存在于中、晚期食管癌中，并可能与食管鳞癌的进展与转移有关。     

乳腺癌 nm23-H_1 蛋白表达的研究

应用ＳＰ免疫组化法检测８４例乳腺浸润性导管癌中ｎｍ２３－Ｈ１蛋白的表达，结果显示ｎｍ２３－Ｈ１蛋白在７２例（８７．５％）有表达。研究表明ｎｍ２３－Ｈ１蛋白的表达水平与淋巴结转移呈负相关（Ｐ＜０．０１），与ＥＲ、ＰＲ水平呈正相关（Ｐ＜０．０１，Ｐ＜０．０５），而与组织学分级ＰＣＮＡ指数及ＭＤＲ１－Ｐｇｐ的表达无关（Ｐ＞０．０５）。     

电化学治疗对肿瘤病人免疫功能的影响

20例晚期癌症病人接受电化学治疗（ECT），治疗后所有病例的肿物均有不同程度缩小，其中4例出现ECT后的远隔效应，即运高电化学治疗电极的转移灶减小。免疫参数（OKT3，OKT4／OKT8，自然杀伤细胞活动度NKA，淋巴细胞转化实验LTT）在ECT前后发生明显改变。所有这些均提示ECT能增强人体免疫功能。     

肝癌患者脾脏免疫状态的研究

对16例肝癌病人外周血及脾静脉血T淋巴细胞亚群检测结果：1）肝癌患者较对照组外周血CD 3、CD 4细胞及CD4／CD8比值降低，CD 8细胞升高。2）肝癌患者脾静脉血较外周血CD 3、CD 4阳性细胞、CD4／CD8比例明显降低，CD 8显著升高。认为随着病程进展，脾脏不但不起正性免疫作用，反而转向负性免疫状态。同时，还对肝癌患者的脾脏手术问题进行了讨论。     

粘附分子CD_(44)剪接变异体在宫颈癌中的表达及其意义

目的：探讨细胞表面粘附分子CD44的表达在宫颈癌浸润和转移中的作用。方法：应用敏感的RT-PCR法检测62例行广泛根治术的宫颈癌组织及痛分组织CD44剪接变异体的表达情况，结合相应的临床病理资料探讨其与宫颈癌侵袭转移的关系。结果：62例宫颈癌CD44VmRNA总阳性率为90.3％，其中有淋巴结转移的宫颈癌CD44表达率显著高于无淋巴结转移者（P＜0.05），并且癌旁组织表达高于癌组织本身的占54.8％结论：CD44剪接变异体可能赋予宫颈癌更强的侵袭转移潜能，并且痛分组织CD44VmRNA的表达可能较单纯癌组织的表达更有意义。     

智力宝口服液治疗精神发育迟滞的临床与实验研究

智力宝口服液临床治疗弱智儿童110例,总有效率74%。实验研究结果表明,对试验性小鼠记忆获得及再现障碍有改善作用,对小鼠急性脑缺血有保护作用,并能缓解阳虚证小鼠的阳虚症状。     

Studies on the translocation of p38 mitogen-activated protein kinase in cardiomyocytes of nude mice on the stimulation of LPS

Milogen-activate(l I)rotejn kinase (MAPK) is the major mediator to lransduce the extracellular signals from tilem(fll]1)rarle to internal nucleus"l. p38 MAPK pathway isone of 1\he 4 pathways that have been identified sofar',.,"'. l[ was proved that the aotivati(,n of I)38 MAPKall'e(fled Ills I)r(>(t'fsses of (tell growth, cell 'lycle and aPOptosis. afl(1 was involve(l ifl the uvula[1()n of inflammationan(l sir(>ss l-c):il)onses. Tile sin(ly ')f the exa(II (lellular location oj' I)n)lo…     

几种中西药抗人实验模拟运动病效果观察

目的 :选用中药“治晕灵”的主要成分生姜、明天麻等六味草药煎成汤剂、或半量汤剂配西药脑益嗪、山莨菪碱各1 4临床常用量配成复方中西药制剂 ,与目前常用抗晕药晕海宁等中、西药的药效进行比较 ,看中药制剂或中西药复方制剂是否具有较好的抗运动病效果。方法 :选 7名敏感被试者 (女性 ,19～ 2 1岁 ) ,用旋转刺激诱发运动病至出现恶心。按拉丁方设计 ,与安慰剂 (淀粉 10 0mg)及晕海宁 (5 0mg)进行对比 ,分别观察了生姜合剂 (30ml)、晕可平 (30ml)、山莨菪碱 (10mg)、脑益嗪 (2 5mg)及上述复方中西药制剂口服后的运动病耐力。结果 :与安慰剂比较 ,晕海宁、山莨菪碱、脑益嗪、晕可平、生姜合剂、复方中西药制剂分别使运动病耐力提高 5 .4%、7.5 %、5 .9%、7.4%、32 .3 %、2 0 .4% ;生姜合剂效果较优 ,除口服时有辛辣味外 ,无明显的副作用。复方中西药制剂各成分未显示协同作用 ,而只是简单的作用相加。结论 :生姜合剂具有较好的抗运动病作用