植物乳杆菌YS-1对活性炭诱导小鼠便秘的预防作用

检测植物乳杆菌YS-1(Lactobacillus plantarum YS-1,LP-YS1)对活性炭诱导便秘昆明小鼠的影响。结果表明LP-YS1的抗胃酸和胆盐能力强于保加利亚乳杆菌。LP-YS1能抑制便秘造成的小鼠体质量、粪便质量、颗粒数和含水量的下降。同时LP-YS1可以提高活性炭在小肠中的推进率和缩短排出首粒黑便的时间。LP-YS1还能使便秘小鼠的胃动素(motilin,MTL)、内皮素(endothelin,ET)、乙酰胆碱酯酶(acetylcholinesterase,ACh E)、P物质(substance P,SP)、血管活性肠肽(vasoactive intestinal peptide,VIP)水平提高和生长抑素(somatostatin,SS)水平下降。逆转录聚合酶链式反应实验进一步显示LP-YS1可以上调便秘小鼠小肠组织c-Kit(干细胞因子受体)、干细胞因子(stem cell factor,SCF)、胶质细胞源性神经营养因子(glial cellline-derived neurotrophic factor,GDNF)基因的m RNA表达和下调瞬时感受器电位香草酸受体1(transient receptor potential vanilloid 1,TRPV1)、一氧化氮合酶(nitric oxide synthase,NOS)基因的表达。高浓度的LP-YS1显示出更好的作用,且显著优于保加利亚乳杆菌。这些实验结果证明LP-YS1可有效缓解便秘。     

Lactobacillus plantarum YS-2对葡聚糖硫酸钠诱导C57BL/6J小鼠结肠炎的抑制作用

本研究通过葡聚糖硫酸钠(DSS)诱导小鼠结肠炎模型,观察了Lactobacillus plantarum YS-2(LP-YS2)对结肠炎抑制效果。将实验小鼠分为正常组、模型组、LP-YS2-L组、LP-YS2-H组和柳氮磺胺吡啶组,对除正常组外其余组小鼠诱导结肠炎,同时对LP-YS2-L组、LP-YS2-H组和柳氮磺胺吡啶组小鼠每日分别灌胃0.2 mL的1×108 CFU/mL LP-YS2、1×109 CFU/mL LP-YS2和20 mg/kg柳氮磺胺吡啶,持续5周。然后通过H&E切片观察小鼠结肠形态,通过内皮素(ET)、生长抑素(SS)、P物质(SP)、血管活性肠肽(VIP)、髓过氧化物酶(MPO)、谷胱甘肽(GSH)、丙二醛(MDA)、超氧化物歧化酶(SOD)、白介素-2(IL-2)、白介素-10(IL-10)试剂盒检测小鼠的血清和结肠组织;同时,采用荧光定量PCR技术对小鼠结肠组织神经元型一氧化氮合酶(nNOS)、内皮型一氧化氮合酶(eNOS)、诱导型一氧化氮合成酶(iNOS)、c-Kit、干细胞因子(SCF)、白介素-8(IL-8)、趋化因子受体2(CXCR2)的mRNA表达进行了检测,同时以药物柳氮磺胺吡啶为阳性对照比较LP-YS2的作用效果。实验结果显示相对于模型组,LP-YS2可以显著(p<0.05)增加结肠炎小鼠结肠长度和提高结肠质量/结肠长度的比值。对小鼠血清进行的检测表明LP-YS2能够显著(p<0.05)降低结肠炎小鼠(模型组)血清ET、SP、IL-10水平和显著(p<0.05)提高SS、VIP、IL-2水平。对小鼠结肠组织的检测显示LP-YS2可以显著(p<0.05)提高结肠炎小鼠(模型组)结肠中GSH含量、SOD活力和降低MPO活力、MDA含量;LP-YS2还能够显著(p<0.05)上调结肠炎小鼠(模型组)结肠中的nNOS、eNOS、c-Kit、SCF mRNA表达和显著(p<0.05)下调iNOS、IL-8、CXCR2表达。由此可以看出,LP-YS2具有结肠炎抑制效果。     

抗消化淀粉对昆明小鼠的便秘预防效果

以抗消化淀粉（resistant starch 3,RS3）为研究对象,建立动物模型,研究其对昆明小鼠便秘的预防效果。结果表明：15% RS3组小鼠表现出最短的首粒黑便排出时间和最高的小肠推进率;而且15% RS3组比10%RS3、5% RS3组小鼠的血清中的胃动素、胃泌素、内皮素、血清乙酰胆碱酯酶、P物质和血管活性肠肽水平升高更明显;生长抑素水平降低更显著;各RS3组小鼠小肠绒毛的断裂更少,其损伤较其他组更轻。综合分析得出,高、中、低含量的RS3对小鼠便秘具有不同程度的预防效果,其中15% RS3的便秘预防效果最佳。     

巴莲莲子生物碱减弱盐酸/乙醇诱导的小鼠胃黏膜损伤研究

本研究的目的是探讨巴莲莲子生物碱对盐酸/乙醇诱导的胃黏膜损伤的作用并对其机制进行研究。小鼠被巴莲莲子生物碱（alkaloids from Ba lotus seed,ABLS）灌胃处理后用盐酸/乙醇诱导胃黏膜损伤,小鼠的血清细胞因子及其他指标采用试剂盒进行测定,同时用逆转录聚合酶链式反应和western blot对胃组织进行检测。100?mg/（kg·d）的ABLS处理小鼠的胃黏膜损伤面积、胃损伤抑制率、胃液分泌量和pH值分别为1.13?mm2、84.5%、0.52?mL和3.3。ABLS作用的小鼠血清白细胞介素（interleukin,IL）-6、IL-12、肿瘤坏死因子α（tumor necrosis factor-α,TNF-α）、γ-干扰素（interferon-γ,IFN-γ）、胃动素（motilin,MOT）、P物质（substance P,SP）、内皮素-1（endothelin-1,ET-1）水平低于对照组小鼠,而生长抑素（somatostatin,SS）、血管活性肠肽（vasoactive intestinal peptide,VIP）水平高于对照组。ABLS作用小鼠胃组织比对照组小鼠具有更高的超氧化物歧化酶（superoxide dismutase,SOD）活性和更低的MDA含量。相比对照组ABLS处理还可以上调胃组织中核因子κB抑制蛋白α（inhibitor kappaB-α,IκB-α）、表皮生长因子（epidermal growth factor,EGF）、表皮生长因子受体（epidermal growth factor receptor,EGFR）、神经元型一氧化氮合酶（euronal nitric oxide synthase,nNOS）、内皮型一氧化氮合酶（endothelial nitric oxide synthase,eNOS）、Mn-SOD、Gu/Zn-SOD、过氧化氢酶（catalase,CAT）的mRNA和蛋白表达,同时下调核因子κB（nuclear factor kappaB,NF-κB）、诱导型一氧化氮合成酶（inducible nitric oxide synthase,iNOS）表达。这项研究表明ABLS处理可减轻胃黏膜损伤,并且这种作用是来自ABLS的抗氧化能力。     

植物乳杆菌HCS03-001对小鼠功能性便秘及肠道菌群的影响

将雄性昆明（KM）小鼠随机分为溶剂对照组、模型对照组和植物乳杆菌（Lactobacillus plantarum）HCS03-001菌粉低（1 g/（kg bw·d））、中（2 g/（kg bw·d））、高（4 g/（kg bw·d））剂量组,连续灌胃14 d后建立功能性便秘模型,考察植物乳杆菌HCS03-001对小鼠小肠墨汁推进率的影响。此外,将小鼠分为溶剂对照组及植物乳杆菌HCS03-001低、中、高剂量组,连续灌胃14 d,分别采集小鼠灌胃0 d和14 d的新鲜粪便进行培养和菌落计数,考察小鼠肠道内菌群的变化情况,旨在研究植物乳杆菌HCS03-001改善小鼠功能性便秘和调节肠道菌群的作用。结果表明,植物乳杆菌HCS03-001中、高剂量可显著提高小鼠小肠墨汁推进率（P＜0.05）;植物乳杆菌HCS03-001高剂量可降低产气荚膜梭菌（P＜0.05）、肠球菌（P＜0.05）、肠杆菌（P＞0.05）的活菌数,同时促进乳杆菌数的增殖（P＜0.05）。说明植物乳杆菌HCS03-001具有改善小鼠便秘、调节肠道菌群的功能。     

副干酪乳杆菌N1115发酵乳对小鼠便秘的改善作用

本研究基于盐酸咯哌丁胺建模制造小鼠便秘模型,考察副干酪乳杆菌 N1115发酵乳对治疗小鼠便秘的 作用。低、中、高剂量副干酪乳杆菌N1115发酵乳（活菌含量分别为1×107、1×108、1×109 CFU/mL）连续灌胃 15 d后,与对照组相比小鼠的排便量及粪便含水量均显著升高（P＜0.05）;肠道推进率分别为57.3%、67.3%和 71.3%,显著高于对照组（P＜0.05）。气相色谱仪分析小鼠粪便中的短链脂肪酸发现,灌胃副干酪乳杆菌N1115 发酵乳后,小鼠粪便中的乙酸、丙酸、丁酸、戊酸含量显著升高（P＜0.05）,且短链脂肪酸种类较模型组更为丰 富。对小鼠远端结肠的组织形态观察发现,灌胃副干酪乳杆菌N1115发酵乳的小鼠结肠黏膜完整,细胞排列整齐, 而对照组的肠黏膜厚度降低,凹窝变浅。通过c-kit抗体对小鼠结肠中的肠间质细胞（interstitial cells of Cajal,ICC）进 行免疫组化分析,结果显示,灌胃副干酪乳杆菌N1115发酵乳后小鼠的ICC含量显著增加,表明副干酪乳杆菌N1115发 酵乳通过提高ICC活性,促进肠道蠕动。综上,副干酪乳杆菌N1115发酵乳能够有效缓解小鼠的便秘症状。     

直投式乳酸菌剂对便秘模型小鼠肠道功能的影响

探讨直投式乳酸菌剂（direct vat set lactobacillus,DVSL）对便秘模型小鼠肠道功能的影响。小肠运动实验：将50只清洁级昆明雄性小鼠按体重随机分为5组,每组10只,即空白组,模型组和低、中、高剂量组。低、中、高剂量组小鼠每天分别灌胃2.09、4.17、8.34×107CFU/mL DVSL水悬液,空白组和模型组灌胃蒸馏水,每只小鼠的灌胃体积为0.2mL/10g体重,均自由摄食饮水,每周测定空腹体重1次。第15d空白组给予蒸馏水,其余四组小鼠灌胃浓度为5mg/kg复方地芬诺酯悬液,0.5h后各组均灌胃墨汁,观察各组小鼠的小肠推进率;小鼠排便实验：方法同上,不同的是实验19d时复方地芬诺酯灌胃浓度为10mg/kg,测定指标为首次黑便时间、6h内黑便粒数及其重量。各时间点各组小鼠体重均无统计学差异（P〉0.05）;模型组小鼠小肠推进率、6h内黑便粒数及其重量均低于空白组,首次黑便时间延长,两组间差异均有统计学意义（P〈0.01）,说明小鼠便秘模型建立成功;中剂量小鼠小肠推进率、6h内黑便粒数均高于模型组（P〈0.05）,高剂量组小鼠6h内黑便粒数及其重量均高于模型组（P〈0.01）,而首次黑便时间短于模型组（P〈0.01）。按照根据《保健食品检验与评价技术规范（2003版）》结果判定原则,直投式乳酸菌对便秘模型小鼠具有调节肠道功能的作用。     

植物乳杆菌P9对小鼠功能性便秘的作用及机制

目的：研究植物乳杆菌P9对小鼠功能性便秘的润肠通便作用及其对肠道菌群的影响。方法：将100只BALB/c雄性小鼠随机分成空白组、模型组、植物乳杆菌P9低剂量组(给予0.42 mg/(kg m_b·d)菌粉(活菌数2.0×1011 CFU/g,下同))、中剂量组(给予0.84 mg/(kg m_b·d)菌粉)、高剂量组(给予2.5 mg/(kg m_b·d)菌粉),每组20只小鼠。将相应剂量的菌粉用无菌去离子水配制成菌悬液,按照10 mL/(kg m_b·d)剂量灌胃15 d,空白组、模型组灌胃等量无菌去离子水。实验第16天,模型组、植物乳杆菌P9干预组以洛哌丁胺4 mg/(kg m_b·d)灌胃诱导小鼠功能性便秘,随机选取10只进行排便实验,检测小鼠首次排黑便时间、6 h排黑便量;剩余10只进行小肠运动实验,测定墨汁推进率,并采用16S rRNA高通量测序技术测定小鼠盲肠内容物菌群组成。排便实验结束后模型组、植物乳杆菌P9干预组剩余小鼠持续灌胃洛哌丁胺4 mg/(kg m_b     

牦牛酸乳分离发酵乳杆菌发酵豆浆的胃溃疡预防效果研究

以采自川西青藏高原的自然发酵牦牛酸乳样品中分离纯化得到的1 株发酵乳杆菌（Lactobacillusfermentum Zhao,LFZ）作为研究对象,探索比较其与商业用嗜热链球菌（Streptococcus thermophilus,ST）发酵豆浆的胃溃疡预防效果。通过利血平诱导胃溃疡小鼠模型,LFZ组小鼠的IL-6、IL-12、TNF-α和IFN-γ细胞因子低于ST组小鼠;血清生长抑素和血管活性肠肽水平高于ST组,胃动素和P物质水平低于ST组,且LFZ组小鼠胃溃疡面积也低于ST组小鼠。由此可知,Lactobacillus fermentum Zhao发酵豆浆的品质优于标准嗜热链球菌发酵豆浆,且其对胃溃疡有很好的预防效果。     

复合乳杆菌对盐酸洛哌丁胺致慢传输型便秘小鼠的缓解作用

为研究复合乳杆菌（鼠李糖乳杆菌LrGG-100、长双岐杆菌BL-11、嗜酸乳杆菌LA-99和干酪乳杆菌LC-88）对慢传输型便秘小鼠的缓解作用。使用盐酸洛哌丁胺作为便秘小鼠造模药物。将雄性BALB/c小鼠随机分成健康组、便秘组、阳性组、复合乳杆菌低、高剂量组;灌胃相应内容物21 d后,处死小鼠取样,测定小鼠小肠推进率等胃肠道功能指标、血清细胞因子水平、胃肠调节肽含量以及AQP3和c-kit的转录水平。结果显示,与便秘组相比,复合乳杆菌低、高剂量组的小肠推进率显著提高61.45%（p<0.05）、1.22倍（p<0.05）,排便时间缩短21.42%（p<0.05）、29.14%（p<0.05）,排便数量增加1.50倍（p<0.05）、1.52倍（p<0.05）,排便质量增加1.13倍（p<0.05）、1.25倍（p<0.05）;高剂量组的AQP3和c-kit基因转录水平分别是便秘组的1.82倍（p<0.05）和2.00倍（p<0.05）;灌胃复合乳杆菌能够增加血清中P物质和胃动素含量,降低血清血管活性肠肽、生长抑素和内皮素-1含量。复合乳杆菌能有效缓解便秘症状,其作用可能与胃肠调节肽水平以及AQP3和c-kit的表达有关。     

人源乳杆菌联合菊粉对2型糖尿病小鼠的改善作用

目的：探究人源乳杆菌联合菊粉对2型糖尿病小鼠的改善效果及机制。方法：采用db/db糖尿病模型小鼠,灌胃4 株人源乳杆菌混合菌剂（10 mL/（kg mb·d）,每株菌的活菌数约1.0×109 CFU/mL）,基础饲料添加质量分数5%菊粉,对小鼠进行饮食干预,每周测定小鼠体质量、摄食量和空腹血糖浓度;干预末期进行小鼠口服葡萄糖耐量试验和胰岛素耐受试验;实验结束后测定小鼠空腹血糖浓度、血脂指标、糖化血清蛋白浓度、炎症因子mRNA相对表达水平、磷脂酰肌醇-3-激酶（phosphatidylinositol-3-kinase,PI3K）和丝氨酸/苏氨酸激酶（serine/threonine kinase,AKT）相对表达水平;取小鼠胰腺、肾脏和肝脏采用苏木精-伊红染色并观察组织形态。结果：人源乳杆菌联合菊粉干预可有效调节糖尿病模型小鼠血糖浓度和血脂指标水平,降低胰岛素抵抗和糖化血清蛋白浓度;抑制促炎因子白细胞介素（interleukin,IL）-6和IL-1β的mRNA表达,促进抑炎因子IL-10的mRNA表达;上调PI3K和AKT蛋白的表达;对肝脏、肾脏和胰腺的损伤有明显的改善作用。结论：人源乳杆菌联合菊粉通过有效降低胰岛素抵抗、抑制炎症反应和促进PI3K/AKT信号通路表达改善2型糖尿病小鼠症状。     

Milk and serum IL-4, IL-6, IL-10, and amyloid A concentrations in cows with subclinical mastitis caused by coagulase-negative staphylococci

The aim of the study was to evaluate the concentrations of cytokines IL-4, IL-6, and IL-10 and acute phase protein amyloid A in milk and in serum from cows with subclinical mastitis caused by coagulase-negative staphylococci and from healthy cows. The blood and milk samples were obtained from 35 midlactation, multiparous (between parities 2 and 4) Holstein-Friesian cows. In the milk samples from 20 cows with subclinical mastitis, the following species of Staphylococcus were detected: Staphylococcus xylosus (8 samples), Staphylococcus chromogenes (6 samples), Staphylococcus haemolyticus (2 samples), Staphylococcus simulans (2 samples), and Staphylococcus sciuri (2 samples). The results of the present study indicate that the level of IL-6 in cows suffering from subclinical mastitis tended to be high in both serum and milk (432.09 and 254.32 pg/mL) compared with the level in healthy cows (164.47 and 13.02 pg/mL, respectively). Amyloid A value also was significantly higher in milk of unhealthy cows compared with cows without subclinical mastitis (790.2 and 360.5 ng/mL). No significant differences were found in levels of amyloid A in serum of both tested groups of cows (2,680.0 and 2,720.0 ng/mL). In contrast, concentration of IL-4 was significantly lower both in serum and in milk of cows with staphylococcal mastitis (86.1 and 123.17 pg/mL) compared with control animals (413.5 and 670.2 pg/mL). The level of IL-10 also was significantly higher in milk of healthy cows than in infected cows (39.78 and 22.5 pg/mL); however, differences in serum levels of this cytokine between tested groups were significantly less important (220.6 and 175.1 pg/mL).     

干酪乳杆菌Qian增强京尼平苷对盐酸/乙醇诱导小鼠胃损伤的预防效果

为探讨最近新发现的干酪乳杆菌Qian（Lactobacillus casei Qian,LC-Qian）和京尼平苷组合对胃损伤预防效果的增强作用,比较分析LC-Qian（0.5×108?CFU/kg,以体质量计,下同）、京尼平苷（50?mg/kg）以及LC-Qian（0.5×108?CFU/kg）＋京尼平苷（50?mg/kg）对盐酸/乙醇诱导胃损伤的预防效果。LC-Qian＋京尼平苷（组合组）能减少胃损伤面积和胃液量,同时提高胃液pH值,能使这些指标接近正常组并且与模型组显著不同。相对于模型组,组合组能降低细胞因子白细胞介素-6（interleukin-6,IL-6）、IL-12、肿瘤坏死因子α和γ-干扰素的水平,同时降低血清胃动素、P物质、内皮素-1的水平和提高生长激素抑制素、血管活性肠肽的水平。相比模型组,在心脏、肝脏、肾脏和胃组织中组合组表现出更高的NO含量,但是这些含量低于正常组。通过逆转录聚合酶链式反应分析观察到：相对于对照组小鼠,组合组能够上调神经元型一氧化氮合酶、内皮型一氧化氮合酶、核因子κB抑制蛋白α的mRNA表达和下调诱导型一氧化氮合成酶、核因子κB表达,同时以上这些表达强度与正常组较为接近。通过这些结果可以看到LC-Qian和京尼平苷联合使用具有最好的胃损伤预防效果,LC-Qian能够提高京尼平苷的胃损伤预防效果,该组合可作为一种新的参考方法用于预防胃损伤。     

Selective and differential enumerations of Lactobacillus delbrueckii subsp. bulgaricus, Streptococcus thermophilus, Lactobacillus acidophilus, Lactobacillus casei and Bifidobacterium spp. in yoghurt--a review

Yoghurt is increasingly being used as a carrier of probiotic bacteria for their potential health benefits. To meet with a recommended level of ≥ 10⁶ viable cells/g of a product, assessment of viability of probiotic bacteria in market preparations is crucial. This requires a working method for selective enumeration of these probiotic bacteria and lactic acid bacteria in yoghurt such as Streptococcus thermophilus, Lactobacillus delbrueckii subsp. bulgaricus, Lb. acidophilus, Lb. casei and Bifidobacterium. This chapter presents an overview of media that could be used for differential and selective enumerations of yoghurt bacteria. De Man Rogosa Sharpe agar containing fructose (MRSF), MRS agar pH 5.2 (MRS 5.2), reinforced clostridial prussian blue agar at pH 5.0 (RCPB 5.0) or reinforced clostridial agar at pH 5.3 (RCA 5.3) are suitable for enumeration of Lb. delbrueckii subsp. bulgaricus when the incubation is carried out at 45 °C for 72 h. S. thermophilus (ST) agar and M17 are recommended for selective enumeration of S. thermophilus. Selective enumeration of Lb. acidophilus in mixed culture could be made in Rogosa agar added with 5-bromo-4-chloro-3-indolyl-β-d-glucopyranoside (X-Glu) or MRS containing maltose (MRSM) and incubation in a 20% CO₂ atmosphere. Lb. casei could be selectively enumerated on specially formulated Lb. casei (LC) agar from products containing yoghurt starter bacteria (S. thermophilus and Lb. delbrueckii subsp. bulgaricus), Lb. acidophilus, Bifidobacterium spp. and Lb. casei. Bifidobacterium could be enumerated on MRS agar supplemented with nalidixic acid, paromomycin, neomycin sulphate and lithium chloride (MRS-NPNL) under anaerobic incubation at 37 °C for 72 h.     

Role of vasoactive intestinal polypeptide (VIP), secretin and gastrin in the genesis of the late exocrine pancreatic hypersecretion,food intake dependent in conscious dogs

Plasma levels of vasoactive intestinal polypeptide (VIP), secretin and gastrin were studied in four saphenous vein-catheterized dogs during the first 12 h after ingestion of a standard solid meal. Under these conditions we found significant postprandial increases in secretin only, which rose from a basal value of 219 ± 27 pg/ml to 449 ± 66 pg/ml 60 min postprandial (p < 0.001), and remained elevated until 4 h after food intake. However, no increase was seen from 8 to 12 h in any of the hormones studied, indicating that they are not directly involved in the enhancement of exocrine pancreatic secretion during this period.     

The critical role of urease in yogurt fermentation with various combinations of Streptococcus thermophilus and Lactobacillus delbrueckii ssp. bulgaricus

The protocooperation between Streptococcus thermophilus and Lactobacillus delbrueckii ssp. bulgaricus relies on metabolite exchanges that accelerate acidification during yogurt fermentation. Conflicting results have been obtained in terms of the effect of the Strep. thermophilus urease and the NH₃ and CO₂ that it generates on the rate of acidification in yogurt fermentation. It is difficult to perform a systematic study of the effects of urease on protocooperation because it is necessary to distinguish among the direct, indirect, and strain-specific effects resulting from the combination of the strains of both species. To evaluate the direct effects of urease on protocooperation, we generated 3 urease-deficient mutants (ΔureC) of fast- and slow-acidifying Strep. thermophilus strains and observed the effects of NH₃ or CO₂ supplementation on acidification by the ΔureC strains. Further, we examined 5 combinations of 3 urease-deficient ΔureC strains with 2 CO₂-responsive or CO₂-unresponsive strains of L. bulgaricus. Urease deficiency induced a shortage of ammonia nitrogen and CO₂ for the fast- and slow-acidifying Strep. thermophilus and for the CO₂-responsive L. bulgaricus, respectively. Notably, the shortage of ammonia nitrogen had more severe effects than that of CO₂ on yogurt fermentation, even if coculture with L. bulgaricus masked the effect of urease deficiency. Our work established (1) that urease deficiency inhibits the fermentative acceleration of protocooperation regardless of the Strep. thermophilus and L. bulgaricus strain combinations, and (2) that urease is an essential factor for effective yogurt acidification.     

Influence of nanopowdered peanut sprouts in collagen-induced arthritic mice

Effects of powdered and nanopowdered peanut sprouts on prevention and treatment of rheumatoid arthritis in DBA/IJ mice immunized with type II collagen were investigated. After induction of arthritis, mice were divided into groups of (1) no immunization (normal), (2) collagen-induced arthritis (CIA), (3) collagen-induced arthritis treated with methotrexate (0.3 mg/kg of body weight) (MTX), (4) collagen-induced arthritis treated with powdered peanut sprouts (0.2mg/day) (PPS), and 5) collagen-induced arthritis treated with nanopowdered peanut sprouts (0.2 mg/day) (NPPS). Feeding methotrexate, powdered, or nanopowdered peanut sprouts to arthritic mice significantly (p<0.05) decreased TNF-α, IL-1β, and IL-6 levels, compared to controls. Serum IgG1 levels for MTX, PPS, and NPPS group mice were 4,980.48, 6,178.44, and 5,776.21 pg/mL, respectively. All values were significantly (p<0.05) lower than for CIA group mice (8,290 pg/mL). Histological scores and spleen indices of NPPS group mice were significantly (p<0.05) lower than for PPS group mice.     

猴菇菌醇提物对胃癌大鼠肿瘤细胞凋亡的干预作用

探究猴菇菌醇提取物对胃癌大鼠肿瘤细胞凋亡的干预效果及作用机制。选取60只SD大鼠,10只作正常组,其余50只建立胃癌模型,分为胃癌组、药物对照组、低、中、高浓度猴菇菌组,分别干预。观察各组大鼠细胞增殖、凋亡、周期分布,检测胃动素、胃泌素及Bcl-2、Bax、caspase3表达。研究结果显示,高浓度猴菇菌组大鼠胃动素、胃泌素水平分别为140.62 pg/mL、85.39 pg/mL,肿瘤组织细胞凋亡率为50.25%、G1期细胞比例为55.61%、Bax表达量为0.76,均高于模型组、药物对照组、低、中浓度猴菇菌组;高浓度猴菇菌组大鼠肿瘤组织细胞增殖率为11.52%,Bcl-2、caspase3表达分别为1.35、1.32,均低于模型组、药物对照组、低、中浓度猴菇菌组(p0.05)。猴菇菌醇提取物能够改善胃癌大鼠胃功能,调控胃癌组织细胞增殖、凋亡及周期分布,为胃癌的临床治疗提供一定的理论依据。