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1.
目的：观察丹荔输通汤对慢性输卵管炎模型大鼠的干预作用。方法：84只SD大鼠按体质量编号,随机抽取11只为空白组,余73只采用苯酚明胶造模法制备输卵管炎性阻塞性模型。将造模成功的66只实验大鼠随机分为6组,即模型组、中药高剂量灌胃+灌肠组（中药高剂量组）、中药中剂量灌胃+灌肠组（中药中剂量组）、中药低剂量灌胃+灌肠组（中药低剂量组）、中药中剂量灌胃组（中药灌胃组）、西药对照组（西药组）,每组各11只。模型组灌胃等容积0.9%氯化钠注射液,中药高、中、低剂量组及中药灌胃组分别给予灌胃、灌肠丹荔输通汤,对照组灌胃阿奇霉素混悬液与等容积0.9%氯化钠注射液。连续干预30d。观察各组大鼠的输卵管形态、组织病理学及肿瘤坏死因子（TNF-α）、白介素-6（IL-6）水平。结果：干预后,肉眼观察发现,与模型组相比,各用药组输卵管组织形态可见不同程度的改善。组织病理学结果显示,中药高剂量组输卵管形态及功能基本正常,中药中剂量组、中药灌胃组、西药组输卵管轻度炎症表现。与空白组比较,模型组TNF-α、IL-6表达升高,与模型组比较,各给药组TNF-α、IL-6表达均降低,差异有统计学意义（P<0.01）。与西药组比较,中药高、中剂量组TNF-α、IL-6表达降低（P<0.05）;中药高、中剂量组TNF-α、IL-6水平低于中药低剂量组、中药灌胃组,中药中剂量组TNF-α、IL-6水平低于中药灌胃组,差异均有统计学意义（P<0.01）。结论：丹荔输通汤治疗慢性输卵管炎可能通过调节TNF-α、IL-6而抑制炎性反应,从而改善全身及局部组织炎症状态。 相似文献
2.
目的：观察清瘟败毒饮对脓毒症大鼠炎症反应和脏器损伤的影响。方法：将80只大鼠随机分为模型组、西药组及中药高、低剂量组,每组各20只。采用盲肠结扎穿刺术进行造模。西药组灌胃盐酸小檗碱0.27 mg/kg,中药高剂量组灌胃清瘟败毒饮4.6 g生药/kg,中药低剂量组灌胃清瘟败毒饮2.3 g生药/kg,模型组灌胃等量0.9%氯化钠注射液。1次/d,连续3 d。观察比较各组大鼠进食、活动、皮毛色泽等一般情况,血清肿瘤坏死因子-α（TNF-α）、白细胞介素-1β（IL-1β）、白细胞介素-6（IL-6）、白细胞介素-10（IL-10）、白细胞介素-17A（IL-17A）水平以及大鼠肺脏、肝脏组织病理情况。结果：模型组出现寒战、呼吸加快、活动度降低、皮毛倒立、精神萎靡等情况,中药高、低剂量组大鼠的一般情况优于模型组;与模型组比较,中药高、低剂量组和西药组均可降低血清TNF-α、IL-1β、IL-6、IL-17A水平（P<0.05）,但中药高、低剂量组与西药组比较,指标差异无统计学意义（P＞0.05）。中药高、低剂量组肺脏、肝脏组织病理损伤程度较模型组改善。结论：清瘟败毒饮可以抑制脓毒症模型大鼠炎症反应,减轻脏器损伤。 相似文献
3.
目的：探讨苍附导痰汤加减对肥胖型多囊卵巢综合征（PCOS）大鼠内分泌、糖脂代谢及核因子κB(NF-κB) p65蛋白的影响。方法：将40只大鼠随机分为空白组（10只）和造模组（30只）。空白组予普通饲料,造模组采用来曲唑联合高脂高糖饮食建立肥胖型PCOS大鼠模型。将30只PCOS大鼠随机分为模型组、西药组、中药组,每组各10只。空白组和模型组给予等体积0.9%氯化钠注射液,西药组予以二甲双胍（135 mg/kg·d）,中药组予以苍附导痰汤加减（14.49 g/kg·d）,连续灌胃干预21 d。给药结束后检测各组大鼠的体质量、子宫与卵巢指数、血清卵泡刺激素（FSH)、促黄体生成素（LH）、总睾酮（T）、空腹血糖（FBG）、胰岛素抵抗指数（HOMA-IR）、空腹胰岛素（FINS）、总胆固醇（TC）、三酰甘油（TG）水平及卵巢组织NF-κB p65蛋白表达。结果：模型组、西药组、中药组治疗前后的体质量及治疗后的FSH、LH、T水平,模型组的子宫指数及HOMA-IR、FINS、TC、TG、NF-κB p65蛋白表达水平,与空白组比较,差异均有统计学意义（P＜0.05或P＜0.01）。西药组、中药组的子宫指数及FSH、T、HOMA-IR、FINS、TG、NF-κB p65蛋白表达水平,西药组的LH水平,与模型组比较,差异均有统计学意义（P＜0.05或P＜0.01）。结论：苍附导痰汤加减能有效改善肥胖型PCOS大鼠内分泌激素及糖脂代谢水平、胰岛素抵抗,其作用机制可能与NF-κB信号通路相关。 相似文献
4.
目的：对胃癌前病变（Precancerous Lesion of Gastric Cancer，PLGC）模型大鼠从整体、细胞及分子水平的指标进行观察，分析其胃黏膜微环境的特点，并初步探讨半夏泻心汤对其胃黏膜的作用机制。方法：清洁级雄性SD大鼠70只，随机分成3组：模型组50只，造模加中药干预组10只，空白组10只。采用改良MNNG+复合法制备PLGC大鼠模型，于造模中期第10周、造模结束期第20周，各组随机抽取5只大鼠，分别从整体水平、细胞水平及分子水平检测半夏泻心汤对其胃黏膜微环境的影响。结果：1）启动子PTEN，造模加中药干预组较模型组表达高，但仍低于空白组；2）调控器PI3K/Akt/mTOR信号通路，PI3K、Akt、mTOR的表达造模加中药干预组较模型组低，但仍高于空白组；3）效应子HIF-1α及其下游基因，造模加中药干预组较模型组表达低，但仍高于空白组；上述结果差异均有统计学意义（P<0.05）。结论：中药半夏泻心汤通过影响PLGC大鼠胃黏膜组织微环境变化的3个关键环节，即PI3K/Akt/mTOR信号通路中的启动子、调控器及效应子，从而影响并阻断PLGC的发生发展。 相似文献
5.
目的：通过对胃癌前病变（PLGC）大鼠炎症因子等相关指标的检测，阐释五丹胃福颗粒对胃癌前病变大鼠的防治作用。方法：SD大鼠40只，采用改良MNNG+复合法制备PLGC模型，随机分为五丹胃福颗粒高、低剂量组，西药（叶酸）组及模型组，每组10只，连续灌胃给药12周，另取10只正常大鼠设为空白组，灌胃0.9%氯化钠注射液。采用ELISA法检测各组大鼠血清COX-2、IL-1β、TNF-α、NF-κB水平。结果：与空白组比较，模型组各指标水平均升高，差异均有统计学意义（P<0.01）；与模型组比较，各治疗组指标水平均降低，差异均有统计学意义（P<0.01）；五丹胃福颗粒高、低剂量组与西药组COX-2、NF-κB水平差异有统计学意义（P<0.05）；五丹胃福颗粒低剂量组与西药组TNF-α、IL-1β水平差异有统计学意义（P<0.01）。结论：五丹胃福颗粒通过抑制PLGC大鼠炎症因子表达，从而影响PLGC的发生发展，并且与叶酸的治疗作用相当。 相似文献
6.
目的：观察健脾解毒活血汤对幽门螺旋杆菌相关性胃炎（HAG）脾胃湿热证模型小鼠血清白介素-1β（IL-1β）、胃泌素（GAS）及胃内组织Hp感染数的影响，为研制新型抗Hp感染的中药提供实验依据。方法：选取40只SPF级昆明小鼠为实验对象，将其随机分为空白组、模型组、西药组和中药组，每组各10只。采用Hp菌液灌胃以建立HAG脾胃湿热证小鼠模型，西药组予以奥美拉唑钠肠溶胶囊灌胃，中药组予以健脾解毒活血汤灌胃，均连续给药14d。观察比较各组小鼠血清IL-1β、GAS与胃内组织Hp感染情况。结果：模型组小鼠血清IL-1β、GAS的含量较空白组明显升高（P<0.01，P<0.05）；与模型组比较，中药组和西药组血清IL-1β显著降低（P<0.05，P<0.01），GAS水平2组无明显差异。模型组小鼠胃组织Hp感染数较空白组明显增加（P<0.01），中药组和西药组胃组织Hp感染数较模型组显著降低（P<0.05）。结论：健脾解毒活血汤对HAG脾胃湿热证模型小鼠血清IL-1β及Hp感染数有明显改善作用，但对GAS影响不大，在一定程度上可有效治疗脾胃湿热型HAG。 相似文献
7.
目的：研究咳喘宁对哮喘豚鼠白细胞介素（IL-6）和肿瘤坏死因子（TNF-α）的调节作用。方法：将60只豚鼠随机分为空白组10只、造模组50只。利用呼吸道合胞病毒（RSV）感染豚鼠建立动物模型,加鸡卵白蛋白（OVA）诱导建立哮喘模型。造模组成功后再将其随机分为模型组,咳喘宁高、中、低剂量组,西药组,每组各10只。咳喘宁高、中、低剂量组分别给予不同剂量的咳喘宁口服液,西药组给予地塞米松+利巴韦林,空白组、模型组给予0.9%氯化钠注射液。经治疗7 d后,应用HE染色法检测咳喘宁对RSV哮喘豚鼠模型的治疗效果;收集支气管肺泡灌洗液（BALF）并采集心脏血,用酶联免疫吸附（ELISA）法分析血清、BALF中IL-6和TNF-α的含量。结果：血清、BALF中IL-6、TNF-α含量,模型组与空白组比较,差异有统计学意义（P＜0.05）,说明造模成功。咳喘宁高、中、低剂量组及西药组与模型组比较,差异均有统计学意义（P＜0.05）。咳喘宁高剂量组与西药组比较,差异亦有统计学意义（P<0.05）。结论：咳喘宁可以降低炎性因子水平,控制气道炎症,调节IL-6和TNF-α含量,改善哮喘模型豚鼠的肺组织病理变化。 相似文献
8.
目的：探讨中药复方天麻钩藤饮治疗肾性高血压动物模型的疗效及可能的作用机制。方法：选取造模成功的肾性高血压SD大鼠24只,将其随机分为模型组、中药组、西药组,每组各8只,另以正常同周龄的SD大鼠作为空白组。中药组予中药复方天麻钩藤饮灌服,西药组予雷米普利灌服,空白组和模型组灌服同体积的纯净水,共干预4周。分别于手术前后、给药后每周测定尾动脉血压,于给药4周后检测血清血管紧张素Ⅱ（AngⅡ）、醛固酮（ALD）水平,主动脉、血管紧张素Ⅱ 1型受体（AT1R）、血管紧张素转化酶（ACE）、内皮型一氧化氮合酶（eNOS）、内皮素（ET）的mRNA相对表达量,动脉B细胞淋巴瘤因子-2相关X蛋白（Bax）、含半胱氨酸的天冬氨酸蛋白水解酶-3（Caspase-3）蛋白表达量。结果：与空白组比较,其余3组在结扎肾动脉手术后收缩压均明显升高,差异均有统计学意义（P＜0.01）,说明动物模型分配合理。给药后中药组、西药组的收缩压每周均明显降低,与模型组比较,差异均有统计学意义（P＜0.01）。给药4周后,与空白组比较,模型组大鼠的AngⅡ、ALD水平明显升高,AT1R、ACE、ET的mRNA相对表达量明显上调,eNOS的mRNA相对表达量明显下调,Bax、Caspase-3蛋白表达量量显著增加,差异均有统计学意义（均P＜0.01）。与模型组比较,中药组、西药组大鼠的AngⅡ、ALD水平明显降低,ACE、ET的mRNA相对表达量明显下调,eNOS mRNA相对表达量上调,Bax蛋白表达量降低,差异均有统计学意义（P＜0.01）;中药组AT1R的mRNA相对表达量、Caspase-3蛋白表达与模型组比较,差异有统计学意义（P＜0.01）。结论：天麻钩藤饮能通过调控肾素-血管紧张素-醛固酮系统（RAAS）和内皮素-一氧化氮系统（ET-NO）降低血压,同时也可抑制血管内皮细胞的凋亡,缓解血管重构的病理进程。 相似文献
9.
目的：探讨健脾柔肝息风汤对抽动障碍模型大鼠运动性抽动的调节机制,为临床治疗抽动障碍提供实验依据。方法：将60只SD大鼠随机分为空白组,模型组,氟哌啶醇组,健脾柔肝息风汤低、中、高剂量组,每组各10只,除空白组外各组大鼠连续7 d腹腔注射亚氨基二丙腈（IDPN）造模,造模成功后连续灌胃6周,灌胃后第1、3、6周分别观察大鼠的行为学改变,采用RT-PCR法检测大鼠脑组织DRD1 mRNA、DRD2 mRNA含量。结果：灌胃6周后,与模型组比较,健脾柔肝息风汤中、高剂量组及氟哌啶醇组在运动行为评分、刻板行为评分及DRD1 mRNA含量方面均有所下降（P<0.05）;而健脾柔肝息风汤低、中、高剂量组及氟哌啶醇组在DRD2 mRNA含量方面有所下降（P<0.05）。结论：健脾柔肝息风汤可通过降低TD模型大鼠脑组织多巴胺DRD1 mRNA、DRD2 mRNA的含量,而改善TD模型大鼠运动性抽动行为。 相似文献
10.
目的：观察参苓白术散对非酒精性脂肪性肝病（NAFLD）大鼠肝细胞、Kupffer细胞、哺乳动物雷帕霉素靶蛋白（mTOR）通路相关基因及蛋白表达的影响,以阐明参苓白术散抗NAFLD的作用机制。方法：将80只大鼠随机分为正常组,模型组及参苓白术散低、高剂量组。对模型组、各药物组连续8周喂养高脂饲料制备NAFLD大鼠模型。造模成功后采用油红O染色观察肝组织病理变化;Ⅳ型胶原酶离体循环灌注法分离肝细胞、Kupfer细胞;全自动生化仪检测血清总胆固醇（TC）、三酰甘油（TG）;酶联免疫吸附法测定肝细胞及Kupffer细胞血管内皮生长因子（VEGF）、干扰素（IFN）-γ含量;实时荧光定量PCR及蛋白质印迹法（Western blot）检测大鼠肝细胞及Kupffer细胞脑内富含的小G蛋白Ras同系物（Rheb）、mTOR复合物1（mTORC1）、核糖体S6蛋白激酶1（S6K1）和真核细胞翻译起始因子4E-结合蛋白1（4E-BP1）mRNA和蛋白表达。结果：模型组大鼠肝组织存在严重的脂质蓄积。血清TC、TG,肝细胞、Kupffer细胞,VEGF、IFN-γ含量,以及Rheb、mTORC1、S6K1、4E-BP1 mRNA和蛋白表达水平较正常组显著升高（P<0.01）,说明造模成功。与模型组比较,各药物干预组血清TC、TG,肝细胞、Kupffer细胞,VEGF、IFN-γ含量,以及Rheb、mTORC1、S6K1、4E-BP1 mRNA和蛋白表达均有不同程度的下调（P<0.05或P<0.01）。其中参苓白术散高剂量组下调趋势最为显著,与低剂量组比较,差异均有统计学意义（P<0.05或P<0.01）。结论：参苓白术散抗NAFLD的作用机制可能与抑制肝细胞及Kupffer细胞mTOR通路中Rheb、mTORC1、S6K1、4E-BP1基因及蛋白表达有关。 相似文献
11.
Arne Schnack-Friedrichsen Angela M. Davis Jim D. Bennell Dei G. Huws 《Marine Georesources & Geotechnology》2001,19(4):221-243
The interdependence between the seismo-acoustic properties of a marine sediment and its geotechnical/physical parameters has been known for many years, and it has been postulated that this should allow the extraction of geotechnical information from seismic data. Though in the literature many correlations have been published for the surficial layer, there is a lack of information for greater sediment depths. In this article, a desktop study on a synthetic seafloor model illustrates how the application of published near-surface prediction equations to subsurface sediments (up to several tens of meters burial depth) can lead to spurious predictions. To test this further, acoustic and geotechnical properties were measured on a number of sediment core samples, some of which were subjected to loading in acoustically-equipped consolidation cells (oedometers) to simulate greater burial depth conditions. For low effective pressures (representing small burial depths extending to around 10 meters subsurface), the general applicability of established relationships was confirmed: the prediction of porosity, bulk density, and mean grain size from acoustic velocity and impedance appears generally possible for the investigated sedimentary environments. As effective pressure increases through, the observed relationships deviate more and more from the established ones for the near-surface area. For the samples tested in this study, in some instances increasing pressure even resulted in decreasing velocities. There are several possible explanations for this abnormal behavior, including the presence of gas, overconsolidation, or bimodal grain size distribution. The results indicate that an appropriate depth correction must be introduced into the published prediction equations in order to obtain reliable estimates of physical sediment properties for greater subsurface depths. 相似文献
12.
Derek V. Ellis 《Marine Georesources & Geotechnology》2001,19(1):51-63
This article reviews information recently available from existing marine and coastal mining for responses to environmental issues affecting marine mining at different depths. It is particularly but not exclusively concerned with those issues affecting seabed biodiversity impact and recovery. Much information has been gathered in the past 10 years from shallow mining operations for construction aggregate, diamonds, and gold, from coastal mines discharging tailings to shallow and deep water, and from experimental deep mining tests. The responses to issues identified are summarized in a series of eight tables intended to facilitate site-specific consideration. Since impacts can spread widely in the surface mixing layer SML, and can affect the biologically productive euphotic zone, the main issues considered arise from the depth of mining relative to the SML of the sea. Where mining is below the SML, the issue is whether it is environmentally better to bring the extraction products to the surface vessel for processing (and waste discharge), or to process the extraction products as much as possible on the seabed. Responses to the issues need to be sitespecific, and dependent on adequate preoperational environmental impact and recovery prediction. For deep tailings disposal from a surface vessel, there are four important environmental unknowns: (1) the possible growth of "marine snow" (bacterial flocs) utilizing the enormous quantities of fine tailings particles (hundreds or thousands of metric tons per day) as nuclei for growth, (2) the possibility that local keystone plankton and nekton species may migrate diurnally down to and beyond the depth of deep discharge and hence be subjected to tailings impact at depth, (3) the burrow-up capability of deep benthos and their ability to survive high rates of tailings deposition, and (4) the pattern and rate of dispersion of a tailings density current through the deep water column from discharge point to seabed. Actions to obtain relevant information in general and site-specifically are suggested. 相似文献
13.
G. Parthiban 《Marine Georesources & Geotechnology》2000,18(3):223-235
Particle fluxes were measured 7 m above the sea bottom during the predisturbance, disturbance, and postdisturbance periods by using time series sediment traps attached to seven deep-sea moorings deployed in the INDEX experiment site in the Central Indian Basin. The predisturbance particle fluxes varied between 22.3 to 55.1 mg m -2 day -1 . Increased and variable particle fluxes were recorded by the sediment traps during the disturbance period. The increase observed was 0.5 to 4 times more than the background predisturbance fluxes. The increases in particle fluxes (~4 times) recorded by the sediment trap located in the southwestern direction (DMS-1) were the greatest, which could be the result of preferential movement of resuspended particles generated during the deep-sea benthic disturbance along the general current direction prevailing in this area during the experimental period. Also, the traps located closer to the disturbance area recorded greater fluxes than did the traps far away, across the Deep Sea Sediment Resuspension System path. This variability in recorded particle fluxes by the traps around the disturbance area clearly indicates that physical characteristics such as grain size and density of the resuspended particles produced during the disturbance had an important effect on particle movement. The postdisturbance measurements during ~5 days showed a reduction in particle fluxes of ~50%, indicating rapid particle settlement. 相似文献
14.
海上大直径钢管桩打桩过程中,桩周土体受到强烈扰动而发生强度弱化,掌握桩周土体强度弱化规律对于准确预测打桩过程、保证工程安全具有重要意义。为研究土体强度弱化规律,开展了环剪试验模拟打桩对桩周土体的扰动,测试土体强度随剪切速率的变化规律,建立了描述土体强度弱化规律的拟合公式,引入到打桩分析软件中。研究结果表明：土体的强度折减程度不仅与土体本身的性质有关还受到土体的埋深和剪切速率的影响,埋深越深土体强度折减程度越低,剪切速率越高土体强度折减越高,在打桩分析中可采用这里推荐的线性折减方法来模拟不同深度处土体强度的折减规律。 相似文献
15.
The advanced piston corer (APC) has been used by the Ocean Drilling Program since 1985 for recovering soft sediments from the ocean floor. The pullout force measured on extracting the core barrel from the sediment is shown to correlate with the average shear strength of the sediment core measured in the ship's laboratory. A simple rule of thumb is derived relating the shear strength of the sediment to the pullout force. Multiple APC holes at individual sites allow the consistency of the pullout measurements to be assessed. The effects of different operational procedures during APC coring are also explored. Although generally applicable, the correlation between pullout force and laboratory measurements of shear strength breaks down for some APC holes, possibly because of the disturbance of some sediment types during the APC coring process. A better understanding of the physical process of APC coring, and its effect on the properties of the sediment both inside and immediately outside the core barrel, would indicate what confidence can be put on the measurement of pullout force as a way of evaluating the in situ shear strength of deep sea sediments. 相似文献
16.
Shigehisa Nakamura 《Marine Geodesy》2000,23(1):55-61
Specific properties of the interannual sea level variations and annual tides in the Northwestern Pacific were studied. Several tide stations were monitored. The monthly mean sea level for the year of 1995 was analyzed at each tide station. A seismic event in 1995, some tectonic activity around the subject area, and the Kuroshio (the oceanic western boundary current) may possibly contaminate results which would have occurred from the astronomical annual tide alone. 相似文献
17.
The effect of different fixation and storage protocols on the flow cytometric (FCM) simultaneous analysis of bacterioplankton and phytoplankton in coastal seawater samples (Mediterranean coastal lagoons) was investigated. FCM measurements (cell number, fluorescence and scatter characteristics) were obtained through DAPI staining. Three fixatives [glutaraldehyde (GA), formaldehyde (FA) and paraformaldehyde (PFA)] and two storage (3 months duration) methods (5 °C and −196 °C) were tested. Two dominant populations were detected in studied samples: bacteria and eukaryotic picophytoplankton. Adding fixatives (2% final concentration) appears necessary to obtain FCM exhaustive counts of all the bacteria and phytoplanktonic cells. This was related to the permeation effect of fixatives which allowed a better DAPI staining of the cells. Maximum fluorescence, i.e. optimal staining of the cells was obtained with FA or PFA, and significant lower fluorescences with GA. Fixed samples stored at 5 °C induced rapid cell loss. Only storage in liquid nitrogen of samples fixed with FA or PFA, allows mid-term (≥4 months) preservation of bacteria or picophytoplankton cell numbers, and limited evolution of DAPI-induced fluorescence and scatter characteristics. 相似文献
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《海洋学报(英文版)》2014,(11):161-F0003
<正>Acta Oceanologica Sinica(AOS)is a comprehensive academic journal edited by the Editorial Committee of Acta Oceanologica Sinica and is designed to provide a forum for important research papers of the marine scientific community which reflect the information on a worldwide basis.The journal publishes scholarly papers on marine science and technology,including physics,chemistry,biology, 相似文献