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羧甲基茯苓多糖对小鼠免疫功能的影响 总被引：14，自引：0，他引：14
伏内试验证明，羧甲基茯苓多糖能明显增强荷瘤小鼠腹腔巨噬细胞的蚕噬功能，小鼠脾抗体分泌细胞数（PFC）以及特异抗原结合细胞数（SRFC）和小鼠对牛血清白蛋白（BSA）诱导的迟发型超敏反应（DTH），明显促进小鼠脾T细胞分泌白细胞介素－2（IL－2）。体内外试验均证明，羧甲基茯苓多糖能明显促进小鼠腹腔巨噬细胞分泌肿瘤坏死因子－α（TNF－α）。体外试验证明，羧甲基茯苓多糖对小鼠脾混合淋巴细胞的增殖有促进作用。 相似文献
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为探讨兰茂牛肝菌(Lanmaoa asiatica)含药血清对小鼠脾淋巴细胞的影响,采集连续30d灌胃给予该菌子实体水提物(4g/kg)的小鼠含药血清,通过脾淋巴细胞体外增殖实验和流式细胞术检测含药血清(5%、10%和20%)对小鼠脾淋巴细胞免疫功能的调节作用。结果表明:兰茂牛肝菌含药血清可明显提高小鼠脾淋巴细胞增殖能力,提高T(CD~(3+))、B(CD~(19+))细胞比例,同时可促进T细胞亚群辅助性T细胞(Th,CD~(3+)CD~(4+))与细胞毒性T细胞(Tc,CD~(3+)CD~(8+))生成,并可上调上述T细胞及T细胞亚群内抗原非特异性共刺激分子CD28的表达,提高T细胞活化程度。因此兰茂牛肝菌含药血清可通过增强以T、B细胞为代表的适应性免疫功能,对机体免疫系统产生潜在的正向调节作用。 相似文献
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银耳Tremella fuciformis纯种在人工合成的琼脂培养基上,能够生长出子实体完成其生活史,但在含纤维素的木屑等培养基上,不能生长出子实体,只有与耳友菌即香灰菌混合才能长出子实体。银耳不是木腐菌而是寄生菌,寄主就是耳友菌。所以银耳栽培中一定要银耳与耳友菌混合接种,才能顺利地生长出银耳子实体。只有充分认识银耳菌与耳友菌各自的特征以及两者之间的区别,才能在银耳栽培中做到两者兼顾,克服盲目性,夺取稳产高产的效果。 1 材料 1.1 银耳曹与耳友菌生长在三明虎头山木材上的银耳,取耳基着生处的部分耳木,按照银耳混种的分离与培养进行操作,经过培养后从中便可得到银耳菌与耳友菌以及银耳孢子。 1.2 PDA培养基制取PDA斜面待用。 1.3 木屑培养基木屑(锯屑或柴粉)78kg,米糠或麦皮20kg,食糖1kg,石膏或碳酸银1kg,清水120kg左右,pH自然,上述材料搅拌均匀后分装于菌种瓶 相似文献
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近年来随着科学技术的普及,银耳已进入千家万户“菜篮子”,成为大众化菜肴。银耳栽培的原料广泛,取材容易,因此大有发展前途。一户农家,只要利用15平方米的房子2间,一次可栽培2500袋,一年可种6批,纯利8000多元。每100公斤的棉籽壳或杂木屑可收银耳干品16—18公斤。其 相似文献
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冬虫夏草菌丝体免疫特性测试 总被引：3，自引：0，他引：3
以发酵生产的冬虫夏草菌丝体为研究材料,通过测试其对荷瘤小鼠超氧化物歧化酶(SOD)和脂质过氧化物(LPO)水平的影响和观察小鼠组织细胞的病理变化,测试冬虫夏草的免疫功能。试验表明,冬虫夏草菌丝体能显著增加荷瘤小鼠脑组织和全血中SOD含量,从而提高机体免疫力,明显减少荷瘤小鼠S180癌细胞面积,降低癌细胞重量,促进癌细胞高度分化,致使癌细胞坏死,对肿瘤生长表现出较强的抑制力。 相似文献
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银耳自古以来被视为滋阴上品,从抗肿瘤活性、免疫调节功能、血管内皮细胞刺激作用、抗辐射、促造血功能、抗糖尿病活性、保肝效能、降低胆固醇活性、抗炎症、助创伤痊愈作用、超氧化物歧化酶活性、美白及抗老化等方面综述银耳药理活性的研究进展;银耳子实体及其液体发酵产物含有丰富的多糖,运用现代萃取技术提取银耳多糖,可作为化妆品、食品、饮料和医疗健康产品的原料,重点介绍银耳在美容和营养保健产品中的应用。 相似文献
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银耳芽孢液体发酵培养基正交筛选试验 总被引：1，自引：0，他引：1
银耳是我国著名的食用菌和药用菌 ,如四川通江银耳、福建漳州雪耳一直享誉国内外。具有强筋补肾、滋阴润肺、止咳补血、壮脑提神等功效 ,深受广大消费者的喜爱〔1,2 ,3 ,4〕。从银耳子实体和芽孢中提取的多糖均能显著增强正常小鼠腹腔巨噬能力。银耳芽孢发酵液与孢子多糖对急性渗出水肿型炎症有一定的抗炎作用。由于目前国内进行银耳菌丝深层发酵提取多糖投资较大 ,尚未规模推广 ,因而银耳芽孢的液体发酵研究具有一定的现实意义。本文就银耳芽孢液体培养培养基作正交筛选 ,以期为规模生产银耳多糖作准备。现将结果报告如下。1 材料和方法1 … 相似文献
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AIM：To investigate the mechanism of tetramethylpyrazine (TMP) in treating collagen-induced arthritis (CIA) in rats. METHODS：The rat model of type II collagen-induced arthritis was established and the rats were randomly divided into normal control group, CIA group and TMP treatment group. The protein expression of matrix metalloproteinase 13 (MMP-13) in paw tissues was detected by immunohistochemical staining and Western blotting. The histopathological changes of the skin in the rat paws were observed with HE staining. The levels of vascular endothelial growth factor (VEGF), interleukin 17 (IL-17) and interleukin 23 (IL-23) in the serum of CIA rats were detected by ELISA. RESULTS：Compared with CIA group, TMP at a dose of 100 mg/kg significantly reduced the weight loss in CIA rats and decreased the protein expression of MMP-13 by 31.82%. TMP also attenuated the pathological changes of the paw subcutaneous tissues. TMP obviously decreased the levels of VEGF by 33.33%, IL-17 by 27.40% and IL-23 by 33.33% in the serum. CONCLUSION：TMP significantly inhibits the development of CIA by decreasing the protein expression of MMP-13, inhibiting the inflammatory cell infiltration and vascular proliferation, and reducing the production of VEGF, IL-17 and IL-23 in CIA rats. 相似文献
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AIM: To observe the effects of some component of Chinese herbs for external use on proliferation of human umbilical vein endothelial cells (HUVEC) and investigate the mechanism of promoting tissue repair. METHODS: The method of MTT was used to examine the effects of Rg1, Rh1, perlolyrine, cinnamyl aldehyde, muscone, astragaluspolysaccharin (APS), velver antler polypeptide (VAP) and soluble extract of boswellia carterii birdw (BCB) on proliferation of HUVEC. RESULTS: APS did not promote proliferation of HUVEC at 9.75 mg/L-2.5 g/L; Rh1 promoted proliferation of HUVEC at 1.94 mg/L-0.5 g/L (P<0.05 or P＜0.01), and Rg1 inhibited proliferation of HUVEC at 31 mg/L (P<0.05); VAP promoted proliferation of HUVEC at 1 mg/L-0.5 g/L with optimal dose of 10 mg/L (P<0.01), Cinnamyl aldehyde promoted proliferation of HUVEC at 2 g/L(P＜0. 05); Muscone and soluble extract of BCB inhibited proliferation of HUVEC at 1 g/L, 0.5-2.5 kg/L(P＜0. 01), respectively; Perlolyrine inhibited proliferation of HUVEC at 0.125 g/L-0.5 g/L(P＜0. 01). CONCLUSION: The external herbs for supplementing Qi and warming Yang can promote HUVEC proliferation and improve angiogenesis during tissue repair. The external herbs for promoting blood circulation and accelerating capillary movement may have influence upon other stages of tissue repair. 相似文献
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ATM: To investigate the effects of tetramethylpyrazine (TMP) combined with bone marrow mesenchymal stem cells (BMSCs) on neuronal apoptosis, and Bcl-2 and Bax expression in rats with cerebral ischemia. METHODS: The BMSCs were isolated by the whole bone marrow adherent method and cultured, and those in the 3rd passage were used for tail-vein transplantation. The rats were subjected to right middle cerebral artery occlusion (MCAO) using suture method, and the rats except sham group were randomly divided into model group, BMSCs (1×109 cells/L) group, TMP (40 mg/kg) group and combination (TMP+BMSCs) group with 12 rats in each group. Neurological function was evaluated by modified neurological severity scoring (mNSS) on 1 d, 7 d and 14 d after cerebral ischemia. Toluidine blue staining was performed to detect cerebral infarct volume, HE staining was used to observe brain histopathological change, neuronal apoptosis was observed by TUNEL staining, and the mRNA and protein expression of Bcl-2 and Bax was detected by real-time fluorescence quantitative PCR and Western blot at 14 d after cerebral ischemia. RESULTS: Compared with BMSCs group and TMP group, TMP combined with BMSCs significantly reduced the score of mNSS (P<0.01) and the infarct volume (P<0.01), alleviated the pathological damage in the peripheral area of cerebral ischemia, decreased the number of TUNEL positive cells (P<0.01), increased the expression of Bcl-2 and decreased the expression of Bax at mRNA and protein levels (P<0.01).CONCLUSION: Tetramethylpyrazine combined with transplantation of BMSCs improves the functional recovery, reduces the infarct volume, relieves the ischemic injury of the brain tissue, and attenuates neuronal apoptosis in the rats with cerebral ischemia. The mechanism may be related to regulating the expression of Bcl-2 and Bax. 相似文献
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AIM: To elucidate the role of NO in the effect of tetramethylpyrazine (TMP) on vasomotion of arterioles induced by noradrenalin(NA).METHODS: Albino rabbits were anesthetized,respiration were maintained,the arterial pressure were measured with a pressure transducer attached to a polyethylene canula in the left common carotid artery,the intestinal loop was mounted on the stage of an inverted microscope and bathed in balanced solution.The inside diameter of the arterial was manually measured on a TV monitor using the TV camera mounted on the microscope.RESULTS: Topical applicated NA to measured field inducd spontaneous vasomotion which has frequency and amplitude.TMP inhibited vasomotion in vasodilation. Treatment with L-NMMA did not affect the effect of TMP.CONCLUSION: L-NMMA can not inhibit action of TMP on vasomotion,TMP may act on smooth muscle directly, not through endogenous NO. 相似文献
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AIM: To study the expression of Fas/FasL mRNA in lung tissue with ischemia-reperfusion lung injury in rabbits and the relationship with the apoptosis,and to observe the effects of Tertram ethylpyrazine on them.METHODS: The pulmonary ischemia-reperfusion models in rabbits with occlusion of left pulmonary hilum for 1 h and then reperfusion 1,3,5 h respectively were used in this experiment.In TMP group,Tertram ethylpyrazine was intravenously dropped at dose of 60 mg/kg at 1 h before ischemia.The TUNEL technique was used to explore apoptotsis of pulmonary cells.In situ hybridization was performed on the rabbit lung tissue to assay the expression of Fas/FasL mRNA.RESULTS: Apoptosis of pulmonary cells was found in both IR group and TMP group.Compared with group IR,the apoptosis index (AI) was decreased obviously in group TMP (P<0.01).There was a significant positive correlation between the expression of Fas/FasL mRNA and the apoptosis of pulmonary cells (r1=0.900,r2=0.869,P<0.01).CONCLUSION: The activation of Fas/Fas-L system may contribute significantly to induce pneumocyte apoptosis in pulmonary ischemic injury.Tertram ethylpyrazine inhibits the activation of Fas/FasL system to decrease apoptosis in pulmonary tissue,which may protect the pulmonary tissues in ischemia injury. 相似文献
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植物生长调节剂对‘长富—2’苹果离体繁殖的效果表明:(1)增殖和生长以BA 1.0—1.5mg/L、IBA 0.5mg/L 较为适宜,高浓度的 BA 和 IAB 易产生玻璃苗和其它异常现象;赤霉素促进新梢的生长.浓度为3.0mg/L 时对增殖有促进作用.(2)三十烷醇对增殖和生长具有显著的效应.(3)不定根的诱导以附加1.0—3.0mg/L IAA 或0.5mg/L IBA 较好.(4)培养基中附加 PP333可以促进根的形成。提高试管苗的移栽成活率.(5)转移培养对生根率和生根数目无显著影响,但有利于试管苗的移栽. 相似文献
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AIM: To investigate the damage in human umbilical vein endothelial cells (HUVECs) induced by recombinant soluble human CD40 ligand (rshCD40L). METHODS: The cultured HUVECs were treated with rshCD40L for 12 h. The survival activity of the HUVECs was observed by MTS assay. The expression of E-selectin, intercellular adhesion molecule (ICAM)-1, tissue factor (TF) and tissue factor pathway inhibitor (TFPI) was measured by ELISA. The activity of superoxide dismutase (SOD) and the level of malondialdehyde (MDA) were detected by the methods of thibabituric acid (TBA). RESULTS: Compared with normal group, different concentrations of rshCD40L (0.5, 1, 2, 3 mg/L) had no obvious effect on the survival activity of the HUVECs (P>0.05). rshCD40L at concentration of 0.5 mg/L promoted the secretion of E-selectin, sICAM-1, TF and TFPI in the HUVECs (P<0.01). rshCD40L at concentration of 0.5 mg/L also increased MDA content and reduced the activity of SOD in the HUVECs (P<0.05). CONCLUSION: 0.5~3mg/L rshCD40L has no obvious effect on endothelial cell survival, but already causes endothelial dysfunction by increasing endothelial inflammation and exogenous coagulation reaction, inducing lipid peroxides injury and reducing antioxidant capacity. 相似文献
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AIM：To evaluate the effects of tetramethylpyrazine (TMP) on calcineurin (CaN) and proliferating cell nuclear antigen (PCNA) gene expression in the proliferation of vascular smooth muscle cells (VSMCs) treated by angiotensin Ⅱ (AngⅡ).METHODS：A cell proliferating model of VSMCs induced by AngⅡ was established.PCNA gene exprersion was observed by immunocytochemical staining and image analysis technique;Calcineurin (CaN) activity was detected by enzyme reaction phosphorus measurement.RESULTS：AngⅡ significantly stimulated the proliferation of VSMCs,cell proliferation activity,CaN activity and the expression levels of PCAN were higher than those in control (P<0.01).While treated with TMP,the CaN activity and PCNA expression were obviously lower than those in AngⅡ group (P<0.01).CONCLUSION：The VSMCs proliferation induced by AngII can be inhibited by tetramethylpyrazine significantly,and the inhibiting mechanism of TMP may be related to inhibiting CaN activity and restraining the expression of PCNA in a dose and time-dependent manner. 相似文献
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不同基质和激素对地石榴扦插生根的影响 总被引：1，自引：0，他引：1
在塑料小拱棚下进行地石榴扦插繁殖试验,研究不同扦插基质和不同生长激素及浓度对地石榴扦插繁殖生根率的影响。试验结果表明：3种不同扦插基质中,1号基质（河沙：泥炭=2：1）的扦插生根率比2号基质（山地红壤：泥炭=2：1）高;5种生长激素中以浓度0．5g／kg的NAA处理效果最好,成活率达92％。扦插繁殖的最佳组合是采用半木质化枝条作插穗,经0．5g／kg浓度NAA处理,在河沙：泥炭=2：1混匀的混合土基质上扦插,应在实践中予以推广应用。 相似文献