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1.
目的：观察电针联合补肾活血方对多囊卵巢综合征(PCOS)模型大鼠的作用机制。方法：将280只大鼠随机分为正常组（A组）、模型组（B组）、克罗米芬组（C组）、克罗米芬+补佳乐组（D组）、克罗米芬+电针组（E组）、克罗米芬+补肾活血方组（F组）、克罗米芬+电针+补肾活血方组（G组）。B、C、D、E、F、G组大鼠予以皮下注射脱氢表雄酮（DHEA）20 d建立PCOS模型,造模成功后C、D、E、F、G组分别给予相应药物干预,A、B组不作任何处理,连续干预5 d。观察大鼠动情周期的改变情况以及血清性激素［促卵泡生成激素（FSH）、促黄体生成激素（LH）、睾酮（T）、LH/FSH］水平、孕鼠数、总着床率、平均着床胚泡数。结果：动情期角化上皮细胞明显增多,未角化上皮细胞明显减少（P＜0.05）。各项性激素指标、总着床率、平均着床胚泡数方面,G组与A组比较,差异无统计学意义（P>0.05）;B、C、D、E、F组与A组比较,差异均有统计学意义（P＜0.05）。总着床率、平均着床胚泡数方面,E、F、G组与B组比较,G组与C、D、E、F组比较,差异均有统计学意义（P＜0.05或P＜0.01）。结论：电针、补肾活血方联合克罗米芬能有效改善PCOS大鼠性激素水平,提高PCOS大鼠总着床率和平均着床胚泡数。 相似文献
2.
目的：研究依达拉奉联合中成药制剂对急性脑梗死大鼠的疗效比较和安全性评价。方法：将SD大鼠随机分为假手术组、模型组、依达拉奉联合丹红注射液组（A组）、依达拉奉联合血塞通冻干组（B组）、依达拉奉联合醒脑静组（C组）、依达拉奉联合疏血通注射液组（D组），采用线栓法制作大鼠左侧大脑中动脉脑缺血（MCAO）模型，除假手术组外，每组按不同时间点（1、3、5、7d）分为4个亚组，术后各组腹腔注射相应药物，1次/d，分别连续给药1、3、5、7d，模型组、假手术组予以等体积0.9%氯化钠注射液灌胃，观察比较各组大鼠各时间点神经功能缺损评分、脑组织水含量、脑组织梗死体积、安全性评价指标等。结果：模型组与假手术组各时间点的神经功能缺损评分、脑组织水含量、脑组织梗死体积及安全性评价指标中WBC计数、APTT时间比较，差异均具有统计学意义(P＜0.01)；与模型组比较，A、B、C、D组各时间点的神经功能缺损评分及3、5、7d脑组织水含量、脑梗死体积及安全性评价指标中白细胞（WBC）计数、活化部分凝血酶原（APTT）时间均降低，差异均有统计学意义(P＜0.05或P＜0.01)。结论：依达拉奉联合中成药制剂治疗急性脑梗死大鼠疗效显著、可靠安全，并且随治疗时间延长，对缺血缺氧神经元的改善作用越明显。 相似文献
3.
目的：观察芹黄素对脑缺血再灌注损伤沙土鼠脑保护作用及炎症反应的影响。方法：采用双侧颈总动脉夹闭手术法建立脑缺血再灌注损伤沙土鼠模型,将其随机分为模型组、尼莫地平组（2 mg/kg）、芹黄素组（40 mg/kg）、假手术组,建模前1周开始腹腔注射给药,再灌注6 h内记录各组神经症状并做卒中评分,再灌注6 h后以免疫组化法测定脑组织海马CA1区核转录因子-κB（NF-κB）的表达。结果：芹黄素组和尼莫地平组脑缺血再灌注损伤沙土鼠的卒中评分、脑部海马CA1区NF-κB,与模型组相比,差异有统计学意义（P＜0.01）;与假手术组脑部极低的NF-κB表达相比,模型组沙土鼠海马CA1区NF-κB表达明显升高（P＜0.01）。结论：芹黄素可抑制核转录因子的激活,调控炎症因子表达,减轻脑部炎症反应,实现对脑缺血再灌注损伤沙土鼠的脑保护作用。 相似文献
4.
目的：观察解毒扶正方对分子靶向药物获得性耐药非小细胞肺癌小鼠模型的干预作用。方法：选取BALB/C nu/nu小鼠40只，皮下接种人非小细胞肺癌细胞株PC9/GR成瘤构建皮下移植瘤，随机分为5组，即空白对照组、低剂量+阳性组、高剂量+阳性组、高剂量组、阳性对照组，每组各8只。所有动物经口灌胃给药，灌胃剂量：中药（解毒扶正方）低剂量为52 g生药/kg体质量，中药高剂量为104 g生药/kg体质量，阳性药物（吉非替尼）为51.38 mg/kg体质量，空白对照组给予纯化水灌胃，每天1次，连续15 d。观察各组的瘤体体积、肿瘤生长抑制率，观察瘤体组织，计算肿瘤细胞增殖指数，免疫组化法检测蛋白激酶B（AKT）、磷酸化蛋白激酶B（p-AKT）、细胞外信号调节激酶（ERK）、磷酸化细胞外信号调节激酶（p-ERK）及核因子E2相关因子2（Nrf2）表达水平，计算p-ERK/ERK、p-AKT/AKT值。结果：瘤体体积、肿瘤生长抑制率高剂量组、高剂量+阳性组与空白对照组比较，差异具有统计学意义（P＜0.05）；低剂量+阳性组、高剂量+阳性组、高剂量组肿瘤细胞增殖指数以及肿瘤组织p-ERK/ERK与空白对照组比较，差异具有统计学意义（P＜0.05或P＜0.01）。结论：解毒扶正方可缩小分子靶向药物获得性耐药非小细胞肺癌裸鼠皮下移植瘤模型体积，抑制皮下移植瘤生长，降低肿瘤细胞增殖指数，降低p-ERK/ERK比值，升高Nrf2蛋白表达。 相似文献
5.
目的：通过建立SD大鼠肌腱末端病模型,观察跟腱大体标本形态、组织学及碱性成纤维细胞生长因子（bFGF）表达量的变化,探讨推拿手法干预肌腱末端病的治疗作用及其作用机制。方法：将20只SD雄性大鼠喂养1周后,随机分成A、B、C、D 组,每组各5只。A组大鼠的右后肢为正常组（A1）,左后肢为模型组（A2）;B、C、D组大鼠分为自然恢复组（B1、C1、D1）与治疗组（B2、C2、D2）。A1组不做任何处理,其余各组均采用跟腱注射Ⅰ型胶原酶的方法建立SD大鼠肌腱末端病模型。造模2周后对B2、C2、D2组进行推拿治疗,于患侧下肢施按揉手法,其余各组不做处理。A、B、C、D组分别在造模成功2周后及干预7、14、21 d后处死,对每组大鼠跟腱进行肉眼观察及病理组织形态学观察,并检测bFGF表达情况。结果：治疗组的损伤修复程度优于同期自然恢复组,且粘连程度比同期自然修复组轻。模型组bFGF含量升高,高于正常组（P＜0.01）,随着损伤愈合,bFGF表达量逐渐下降,治疗组优于同期自然修复组,治疗后第14、21天最明显（P＜0.05或P＜0.01））。结论：推拿手法可下调bFGF表达量,促进受损组织愈合,防止肌腱粘连,对肌腱末端病起到干预作用。 相似文献
6.
目的：观察加味银翘散对反复热性惊厥（FS）幼龄大鼠免疫功能及脑损伤的影响。方法：对SPF级幼龄SD大鼠采用热水浴方法建立FS模型。将热水浴中5 min内出现惊厥的大鼠随机分为模型组、丙戊酸钠组、加味银翘散大剂量组（JYPH组)、加味银翘散小剂量组(JYPL组),每组各10只。另设空白组10只。灌胃时,JYPL组及JYPH组分别为0.252、1.008 g/ml的浓度给药,丙戊酸钠组为9.45 g/ml浓度给药,空白以及模型组给予等容积蒸馏水,连续干预20 d。HE染色及尼氏染色检测大鼠海马组织病理学变化;使用流式细胞术检测大鼠外周血T淋巴细胞亚群;采用透射比浊法分析免疫球蛋白A（IgA）、免疫球蛋白G（IgG）、免疫球蛋白M（IgM）水平。结果：与空白组相比,模型组大鼠均有明显惊厥发作（P＜0.01）;其CD4+水平、CD4+/CD8+比值降低（P＜0.01）,CD8+水平升高（P＜0.01）,IgA、IgG水平降低（P＜0.01）。与模型组相比,丙戊酸钠组、JYPH组及JYPL组肛温下降,惊厥潜伏时间延长,惊厥级别降低,IgA、IgG水平升高,差异均有统计学意义（P＜0.01,P＜0.05）;丙戊酸钠组及JYPH组CD4+水平、CD4+/CD8+比值升高（P＜0.01）,CD8+水平降低（P＜0.01）。与模型组比较,各药物组大鼠海马CA1区、CA3区的神经元数目增多;JYPH组的CA1区、CA3区的神经元数目多于丙戊酸钠组、JYPL组。结论：加味银翘散治疗幼龄大鼠热性惊厥反复发作的作用机制可能与调节免疫功能及保护脑损伤有关。 相似文献
7.
目的：观察茵陈四苓颗粒联合骨髓间充质干细胞（BMSCs）对急性肝衰竭大鼠线粒体膜电位的调节作用。方法：将60只雄性SPF级SD大鼠随机分成A组（正常组）、B组（茵陈四苓颗粒联合骨髓间充质干细胞组）、C组（茵陈四苓颗粒组）、D组（模型组）、E组（复方甘草酸苷组）、F组（骨髓间充质干细胞组）,每组各10只。采用硫代乙酰胺腹腔注射的方法制备急性肝衰竭大鼠模型,进行BMSCs的分离纯化、培养及鉴定,观察大鼠的一般情况与存活情况,血清天冬氨酸氨基转移酶（AST）、丙氨酸氨基转移酶（ALT）、总胆红素（TBil）的含量,肝脏组织病理情况、肝线粒体的形态与结构、肝线粒体膜电位。结果：大鼠血清ALT、AST、TBil水平比较,D组较A组明显升高（P<0.05）,B、C、E、F组较D组降低,其中B组降低更显著,差异均有统计学意义（P<0.05）,E、F组组间差异无统计学意义（P>0.05）。B、C、E、F组肝脏组织病理、线粒体形态与结构的变化情况较D组好转。D组Q1-UR/Q1-LR阳性百分比比值显著升高,与A组比较,差异有统计学意义（P<0.05）;B、C组与D组比较,差异有统计学意义（P<0.05）;各干预组肝线粒体膜电位稳定,E组相似文献
8.
目的：观察3D复位配合接骨散加经皮穿刺椎体成形术（PVP）治疗老年骨质疏松椎体压缩性骨折的近期疗效。方法：将90 例老年骨质疏松椎体压缩性骨折患者随机分为3组，每组各30 例。对照1组采用3D复位法合PVP术式治疗；对照组2采用保守治疗；治疗组采用3D复位配合中药外敷接骨散加PVP术式治疗。观察3组视觉模拟疼痛量表（VAS）评分、椎体高度丢失率及Cobb氏角恢复情况。结果：总有效率治疗组为96.67%（29/30），对照1组为96.67%（29/30），对照2组为13.33%（4/30）。VAS评分治疗组、对照1组治疗前后比较，差异均有统计学意义（P<0.01）；椎体高度丢失率、Cobb氏角治疗组治疗前后组内比较及治疗后与对照1、2组比较，差异均有统计学意义（P＜0.01）。结论：3D复位配合接骨散加PVP能取得更好的骨折复位，效果可能要优于单用PVP及保守治疗。 相似文献
9.
目的：探讨补阳还五汤对局灶性脑缺血大鼠神经干细胞移植后凋亡相关基因Bag-1、Bcl-2表达的影响。方法：选取SD大鼠，复制局灶性脑缺血大鼠模型，按神经功能缺损评分进行分层，随机分为模型组、空白移植组、移植组、补阳传统饮片组、补阳超微饮片组，每组15只，分别于细胞移植后7、14、28d观察神经功能评分，采用补阳还五汤超微饮片与传统饮片予以干预，于相应时间点处死大鼠后采用免疫组化法检测凋亡基因Bag-1、Bcl-2的表达。结果：补阳传统饮片组、补阳超微饮片组大鼠神经功能得到明显恢复，Bag-1、Bcl-2蛋白表达上升显著，在各时间点（7、14、28d）与模型组比较差异均有统计学意义（P＜0.01或P＜0.05）；补阳超微饮片组促神经功能积分的恢复及上调Bcl-2、Bag-1蛋白表达作用优于补阳传统饮片组，差异有统计学意义（P＜0.01或P＜0.05）。结论：补阳还五汤可促进神经功能的恢复，上调Bag-1、Bcl-2蛋白表达，且超微饮片的作用较传统饮片更加显著。 相似文献
10.
目的：通过观察五脏俞穴位埋线对衰老模型大鼠应激下血清皮质醇（CORT）、血浆促肾上腺皮质激素（ACTH）、下丘脑促肾上腺皮质激素释放激素（CRH）含量变化，探讨五脏俞穴位埋线对下丘脑-垂体-肾上腺（HPA）轴的调节作用。方法：将60只SPF级雄性SD老龄大鼠随机分为空白对照组（A组）、模型组（B组）、模型+埋线组（C组）、模型+应激组（D组）、模型+应激+埋线组（E组）。应激从第5周开始，每天1次给予制动应激，持续4周。五脏俞穴位埋线从第1周开始，每周1次，共8次。运用放射免疫法分别检测5组大鼠ACTH、CRH、CORT的含量。结果：与A组比较，B、C、D、E组3项检测指标水平均升高（P<0.05）；与B组比较，C组CRH、CORT含量降低（P<0.05），ACTH含量升高，但差异无统计学意义（P>0.05），D组3项检测指标水平均升高（P<0.05），E组3项检测指标水平均降低（P<0.05）；与C组比较，D组ACTH、CRH、CORT含量及E组CRH含量升高（P<0.05），E组ACTH含量降低（P<0.05），CORT含量也升高，但差异无统计学意义（P>0.05）；与D组比较，E组ACTH、CORT、CRH含量均降低（P<0.05）。结论：衰老模型大鼠存在HPA轴功能障碍，慢性应激可加重HPA轴的功能紊乱，五脏俞穴位埋线可改善慢性应激和衰老导致的HPA轴功能障碍状态，降低应激损伤，延缓机体衰老。 相似文献
11.
The analysis of the structure of the cryolithozone, facies, and thicknesses of the Quaternary sediments and the results of the physicochemical mathematical modeling of the modern shelf of the western part of the Laptev Sea support the influence of the Late Pleistocene glaciations on the heat conditions and the distribution of the permafrost in the area. A ～200-m thick glacier formed under aerial conditions from atmospheric precipitation represented the metamorphosed snow cover. According to the modeling, the long-living (from 60?50 to 10?4 ky) glacier reduced the thickness of the permafrost rocks in the reviewed shelf area for 280–360 m. The Holocene marine transgression additionally decreased the thickness from 50–140 m on the inner shelf to 220–350 m on the outer shelf. The modern submarine cryolithozone 450-0 m thick is wide-spread in the studied region from the coast to the shelf boundary (isobaths of 130–140 m), where it pinches out at a distance of ～380 km from the coast at a depth of ～250 m above the sea level. 相似文献
12.
We analyze the components of the carbon system of the Sevastopol bay waters and the balance of main sediment-forming substances
using the data of field investigations in 1998–2008. The interannual variations of total inorganic carbon and the equilibrium
partial pressure of carbon dioxide in the bay water are noted. An increase in the flux of carbon dioxide into the bay and
in the content of organic carbon in bottom sediments is revealed, and an explanation of this phenomenon is given. The priority
accumulation of organic carbon in the sediments of the bay is established. We assess the interannual variation in the relative
abundances of organic and inorganic carbon as an index of the carbon cycle stability. 相似文献
13.
We generalize and analyze the state of investigations of the influence of river waters on the hydrologic structure of the
Black Sea. Specific features of the water, regime and hydrography of rivers flowing into the sea, data on the discharge of
rivers, and intrayear and interyear variability of the discharge are presented. We discuss and analyze works studying the
transformation of river waters, routes of desalinized sea waters, and their influence on the thermohaline structure and dynamic
regime of the sea.
Translated by Peter V. Malyshev and Dmitry V. Malyshev 相似文献
14.
V. A. Ivanov S. P. Lyubartseva N. Mikhailova N. B. Shapiro 《Physical Oceanography》2001,11(6):509-524
We analyze the results of numerical calculations performed according to the three-dimensional interdisciplinary model of an
ecological system of the Black-Sea shelf zone near the estuary of the Danube. The complete system of equations of hydrothermodynamics
is solved together with transport equations of the advection-diffusion-reaction type used to describe the transformation of
a substance (nitrogen) between the components of the characteristic vectors of the ecosystem: plankton, detritus, and biogenic
elements (nitrates). We describe the distinctive features of the circumcontinental distribution of components obtained as
a result of numerical experiments and present arguments for the conclusion that the ecosystem of the Danube estuary water
area plays the role of a buffer zone between the press of the Danubian biogenic pollutions and the neighbouring areas of the
shelf zone and open sea.
Translated by Peter V. Malyshev and Dmitry V. Malyshev 相似文献
15.
Relationship between the path of the Kuroshio in the south of Japan and the path of the Kuroshio Extension in the east 总被引：2，自引：0，他引：2
A relationship between paths of the Kuroshio and Kuroshio Extension (KE) is investigated, using the satellite-derived altimetry
dataset of 1993–2008. When the Kuroshio takes the nearshore nonlarge meander path or typical large meander path and resultantly
goes through the deeper channel (about 2500 m) of the Izu-Ogasawara Ridge, the KE path adopts a relatively stable state with
the two quasi-stationary meanders. On the other hand, when the Kuroshio takes the offshore nonlarge meander path and then
passes over the shallower part of the Ridge (about 1000 m), the KE path tends to be convoluted, i.e., an unstable state. 相似文献
16.
Ten years of semistationary studies of the interaction of the ice cover and the coastal relief of the Kandalakhsa Gulf in the White Sea allowed us to reveal the peculiarities of these processes in the warm and cold years and the mechanisms of the origination of ice forms, including ice tents, which govern the character of the tidal flats. Three dynamic fast ice zones are distinguished by their geomorphological location, morphology, and ice dynamics. The dependence of the mechanisms and volumes of the enrichment of the fast ice in the sediments on the coastal zone??s relief was established. At the coast of the Kindo Peninsula (Velikaya Salma Strait), the ice mostly contains fine-sandy sediments. Coarser sediments, including boulders, are occasional and frozen into the ice at the contact of the fast ice and the bottom. At the expense of the ice??s spreading by 4?C6 times in the warm years and 2?C4 times in the cold years, several thousand tons of sediments mostly from the tidal flat??s surface (100?C700 m3 from 1 km of coast in the wide tidal flats and <50 m3 on the steep coasts) are delivered to the water area. 相似文献
17.
I. E. Timchenko A. A. Primalenny V. D. Yarin E. F. Vasechkina E. M. Igumnova 《Physical Oceanography》2001,11(4):367-378
We use many-year archival observations of hydrologic and hydrobiologic state of the Sea of Azov for the identification of
the structure of a model of its ecosystem. The ecosystem model, supplemented with expert estimates of bioresource consumption
(fish reserve), contamination level, and possible ecologic fines for violation of the sea natural state, is formalized by
the method of system dynamics. Hereat, the major part of influence functions is found in terms of observational data with
application of self-organization algorithms. We also present the results of simulated experiments with the model of the ecosystem,
which enable us to analyse scenarios of its behaviour under the influence of various external factors (wind, river discharge,
water exchange with the Black Sea, etc.).
Translated by Peter V. Malyshev and Dmitry V. Malyshev 相似文献
18.
E. L. Vinogradova 《Oceanology》2008,48(4):483-492
The spatiotemporal variability of the hydrochemical composition of the riverine runoff in nearmouth areas is presented using the example of selected rivers of the Arctic Basin. The temporal dynamics of the riverine nutrient runoff are mainly determined by the seasonal and interseasonal variations in the drainage basins. The spatial variations in the chemical composition of riverine waters in the near-mouth areas are mainly caused by the dynamics of the water flow and the river bed relief and, to a lesser degree, by biochemical processes. It is shown that the variations in the nutrient composition of the waters in near-mouth areas are comparable in magnitude to those at the river-sea geochemical barriers. 相似文献
19.
The methodology and the first results of the computations of the volumes, masses, and growth rates of the sedimentary body of the buried Black Sea basin are presented. Their temporal evolution reflects the regional paleogeodynamics, in particular, the reorientation of the vector of the relative movement of the Arabian and Eurasian lithospheric plates and the related intensification of their collision in the late Miocene-Pliocene. 相似文献
20.
Izvestiya, Atmospheric and Oceanic Physics - Analysis of the temporal variations of the virtual heights of the sporadic E layer (h?ES) determined from ionograms with increased accuracy (1... 相似文献