Transmission of Helicobacter pylori from Challenged to Nonchallenged Nude Mice Kept in a Single Cage

To determine the transmission route of Helicobacter pylori, one nude mouse was challenged by H. pylori, and then raised with nonchallenged nude mice in a single cage in a sterilized environment with and without exposure to their feces. After coraising for two and four weeks, all mice were killed to determine H. pylori in the stomach, saliva, and feces and to assess gastritis grade. Natural transmission of H. pylori occurred in 50% (2/4) and 70% (7/10) of mice after two weeks and four weeks of coraising when they were exposed to their feces. H. pylori was detected not only in the stomach but also in saliva and feces by PCR of all challenged and transmitted mice. However, no transmission occurred in mice not exposed to feces of a challenged mouse, while sharing food and water in a single cage. These findings suggest that the fecal–oral transmission route is important, at least in the animal model. Serum levels of anti-H. pylori urease IgG of the H. pylori-transmitted mice increased after coraising, and gastritis was observed in the stomach of both challenged and transmitted mice. We conclude that H. pylori bacteria are transmitted through the fecal–oral route from challenged to nonchallenged nude mice, resulting in gastritis.     

Associations of resting and peak fat oxidation with sex hormone profile and blood glucose control in middle-aged women

Background and aimsMenopause may reduce fat oxidation. We investigated whether sex hormone profile explains resting fat oxidation (RFO) or peak fat oxidation (PFO) during incremental cycling in middle-aged women. Secondarily, we studied associations of RFO and PFO with glucose regulation.Method and resultsWe measured RFO and PFO of 42 women (age 52–58 years) with indirect calorimetry. Seven participants were pre- or perimenopausal, 26 were postmenopausal, and nine were postmenopausal hormone therapy users. Serum estradiol (E2), follicle-stimulating hormone, progesterone, and testosterone levels were quantified with immunoassays. Insulin sensitivity (Matsuda index) and glucose tolerance (area under the curve) were determined by glucose tolerance testing. Body composition was assessed with dual-energy X-ray absorptiometry; physical activity with self-report and accelerometry; and diet, with food diaries. Menopausal status or sex hormone levels were not associated with the fat oxidation outcomes. RFO determinants were fat mass (β = 0.44, P = 0.006) and preceding energy intake (β = ?0.40, P = 0.019). Cardiorespiratory fitness (β = 0.59, P = 0.002), lean mass (β = 0.49, P = 0.002) and physical activity (self-reported β = 0.37, P = 0.020; accelerometer-measured β = 0.35, P = 0.024) explained PFO. RFO and PFO were not related to insulin sensitivity. Higher RFO was associated with poorer glucose tolerance (β = 0.52, P = 0.002).ConclusionAmong studied middle-aged women, sex hormone profile did not explain RFO or PFO, and higher fat oxidation capacity did not indicate better glucose control.     

颞下颌关节紊乱病患者关节滑液硫酸软骨素含量变化及意义

目的观察颞下颌关节紊乱病(TMD)患者关节滑液中硫酸软骨素(CS)的含量变化,探讨其在TMD诊断中的价值.方法用高效液相色谱法检测10例正常人颞下颌关节(对照组)、32例颞下颌关节结构紊乱病(ID组)、28例颞下颌关节骨关节病(OA组)患者关节滑液中CS不饱和二糖ΔDi-6S与ΔDi-4S.结果三组关节滑液中均能检测出ΔDi-6S,ID组及OA组均检测到ΔDi-4S,对照组仅有3例检测到痕量ΔDi-4S.ΔDi-6S与ΔDi-4S含量在ID组及OA组均高于对照组(P均＜0.001),OA组亦高于ID组(P＜0.01).结论 TMD患者关节滑液中CS含量增加,且随病变的加重CS含量增加,其可以作为一种生化标志用于TMD的早期诊断.     

白色念珠菌对人口腔黏膜上皮角质细胞的作用研究

目的研究白色念珠菌对人口腔黏膜上皮角质细胞的作用机制。方法将培养的口腔黏膜上皮角质细胞分别加入孢子型白色念珠菌(孢子组)和菌丝型白色念珠菌(菌丝组),另将单独培养的口腔黏膜上皮角质细胞作为阴性对照组。比较各组对口腔黏膜上皮角质细胞的黏附作用,并观察白色念珠菌对口腔黏膜上皮角质细胞的凋亡和增殖作用。结果菌丝组黏附指数(7.63±1.39)显著高于孢子组(3.47±1.04),差异有统计学意义(P<0.05);菌丝组凋亡率[(3.49±0.4)%]显著高于孢子组[(2.07±0.15)%]和阴性对照组[(1.98±0.07)%],差异有统计学意义(P<0.05),而孢子组和阴性对照组凋亡率相比差异无统计学意义(P>0.05)。菌丝组G0/G1期细胞比例[(38.17±7.83)%]显著低于孢子组[(49.47±11.41)%]和阴性对照组[(57.71±9.39)%],差异有统计学意义(P<0.05);S期[(8.54±4.03)%]、G2/M期[(20.18±9.59)%]细胞比例上升,且显著高于孢子组[(6.47±2.73)%、(10.71±3.19)%]和阴性对照组[(5.35±2.11)%、(12.38±4.35)%],差异有统计学意义(P<0.05);PI[(42.79±18.73)%]明显高于孢子组[(28.67±8.79)%]和阴性对照组[(26.87±7.64)%],差异有统计学意义(P<0.05),而孢子组和阴性对照组PI相比差异无统计学意义(P>0.05)。结论白色念珠菌能够导致口腔黏膜上皮角质细胞发生凋亡和增殖周期改变。     

自拟通便方联合针刺治疗便秘临床观察

目的：观察探讨针刺联合通便方对阴虚津亏型便秘患者的临床疗效。方法阴虚津亏型便秘患者40例,按就诊先后顺序随机分为治疗组（通便方联合针刺）和对照组（通便方）,每组20例。对照组单纯采用通便方治疗,治疗组在对照组基础上加用针刺,7 d 为1个疗程,共计2个疗程。观察两组患者治疗后临床疗效及临床症状评分情况。结果两种方法均能有效缓解便秘临床症状（P ﹤0.05）,但治疗组在改善排便间隔时间、排便费力程度、排便不尽感及紧迫感、腹痛腹胀症状较对照组均有优势（P ﹤0.05）,且治疗组临床疗效优于对照组（P ﹤0.05）。结论针刺联合中药口服治疗慢性功能性便秘,通过建立以多层次、立体的治疗方案,从根本上调整了机体阴阳失衡的状态,疗效显著,值得推广。     

护肝中药“五田保肝液”急性毒性实验研究

[目的]明确护肝中药"五田保肝液"的用药安全剂量范围,为临床用药安全提供实验依据。[方法]依据中药、天然药物急性毒性实验研究技术指导原则设计实验,观察小鼠急性毒性反应,并记录其死亡情况,确定急性毒性实验中五田保肝液半数致死量(LD50)或最大给药量。[结果]半数致死量实验中未测得LD50,最大给药量实验获得小鼠最大给药量折合生药228 g/(kg·d),相当于成人临床用药量的120倍。[结论]护肝中药"五田保肝液"急性毒性反应低,临床常用药物剂量安全可靠。     

NMR测定丹酚酸B标准品中有机溶剂残留

[目的] 用定量核磁共振(QNMR)技术建立中药来源的标准品化合物丹酚酸B中残留甲醇、乙醇和乙酸含量的快速分析方法。[方法] 采用BRUKER AVANCEⅢ 600型超导核磁共振波谱仪采集谱图, 观频率600.23 MHz,测定温度298 K.谱宽12 019.2 Hz,采样数据点65 536,扫描次数16次, 延迟时间15 s.[结果] 所有标准曲线在1.22~2 430 mg/L范围内线性良好(r²>0.999 5),平均回收率(n=6)在 105%~109%之间。[结论] 本方法快速、准确, 可应用于样品有机溶剂残留的检测。     

甘草对液体发酵中槐耳菌丝体生长及多糖影响初探

[目的] 以槐耳菌丝体生物量及多糖为主要指标,探究槐耳-甘草液体共发酵中最佳甘草的添加量和发酵时长。[方法] 采用液体发酵技术,在液体发酵培养基中加入甘草提取液,共发酵获得槐耳-甘草共发酵产物,苯酚-硫酸法及DNS法结合测定多糖含量。[结果] 槐耳-甘草液体共发酵实验中,添加甘草8 g/L、发酵终点设为192 h时,槐耳生物量和胞内多糖产量达到最大值。[结论] 运用槐耳-甘草液体共发酵可以提高槐耳生物量及多糖的含量,为深入研究槐耳-甘草液体共发酵机制提供了理论依据。     

慢性咽喉炎应用蓝芩口服液治疗的临床分析

目的：探讨慢性咽喉炎应用蓝芩口服液治疗的临床分析。方法将2013年7月—2014年7月在该院内科治疗的100例慢性咽喉炎患者随机分为两组,对照组采用常规治疗的方法,观察组在此基础上服用蓝芩口服液,治疗2个疗程后比较两组患者的临床效果、症状改善时间、不良反应等。结果对照组治疗有效率为82%,观察组治疗有效率为94%,差异有统计学意义（P＜0.05）;观察组咽部疼痛充血、咽部粘膜干燥、咽痒咽干、咽部异物感等在症状改善时间上明显短于对照组,差异有统计学意义（P＜0.05）;两组均未有明显不良反应（P＞0.05）。结论慢性咽喉炎应用蓝芩口服液治疗效果显著,利于症状的缓解,减少复发,具有积极的临床意义。