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现代汉语方言词的理据探讨应追溯本字——以“打虎的”“兔儿虎”“耳茄子”为例
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作者 赵修 《盐城师范学院学报(人文社会科学版)》 2013年第2期75-77,共3页
现代汉语方言词的理据探讨,必须做好溯源的工作,以便古今贯通。从方言词典记录的方言词的意义入手,以音变现象为线索,对北京方言词中的"打虎的""兔儿虎""耳茄子"三词的本字进行追溯,可以明了它们的理据。
关键词 打虎的 儿虎 耳茄子 音变 本字 理据
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Determination of Scutellarin in Rabbit Plasma after Oral Administration by HPLC-MS with Solid-Phase Extraction 被引量:5
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作者 李妮 黄建明 +3 位作者 翁伟宇 黄照昌 蔡佳 郁韵秋 《Journal of Chinese Pharmaceutical Sciences》 CAS 2005年第1期38-42,共5页
Aim To establish a sensitive and specific liquid chromatography-massspeetrometry method for determination of scutellarin in rabbit plasma after oral administration.Methods For the quantitative analysis, rutin was used... Aim To establish a sensitive and specific liquid chromatography-massspeetrometry method for determination of scutellarin in rabbit plasma after oral administration.Methods For the quantitative analysis, rutin was used as an internal standard and solid-phaseextraction (SPE) was performed by using a Phenomenex C_8 cartridge. HPLC was carried out using aZorbax Extend-C_(18) column (150 mm x 2.1 mm ID, 5 μm) with a guard cartridge (Phenomenex) .Gradient elution was selected with the mobile phase of methanol 10 mmol·L^(-1) ammonium acetatesolution (pH adjusted to 8.0 with ammonia solution). The flow rate of mobile phase was 0.4mL·min^(-1) and the column temperature was 35 ℃ . Both scutellarin and the internal standard rutinin rabbit plasma extracts were detected by mass spectrometry using an ESI interface in the negativeion mode. Results The linear range was from 2 to 200 ng· mL^(-1), with acceptable accuracy andprecision (RSD) . Conclusion A sensitive, reliable and accurate method for the quantitation ofscutellarin in rabbit plasma has been established. 展开更多
关键词 SCUTELLARIN LC-MS SPE BREVISCAPINE
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Cloning of Rabbit Bone Morphogenetic Protein 15 and Its Expression During in vitro Maturation of Rabbit Oocytes 被引量:3
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作者 尹萍 季金强 +1 位作者 李霖 丁家桐 《Zoological Research》 CAS CSCD 北大核心 2008年第6期603-607,共5页
Partial cDNA sequence of rabbit BMP15 was cloned by RT-PCR from rabbit ovaries, showing a similarity of 83%-90% with the BMP15 nucleotide sequences in humans, mice, ovine, sheep, cows and pigs. The expression of BMP15... Partial cDNA sequence of rabbit BMP15 was cloned by RT-PCR from rabbit ovaries, showing a similarity of 83%-90% with the BMP15 nucleotide sequences in humans, mice, ovine, sheep, cows and pigs. The expression of BMP15 in rabbit cumulus-oocyte complexs during oocytes in vitro maturation (IVM) was measured by fluorescent quantitative RT-PCR method. BMP 15 was expressed at low levels in immature oocytes and increased to the highest level at 16h of IVM, which coincides with the time of cumulus cell expansion, then declined slowly under IVM cultivation. The expression pattern of BMP 15 suggested that it might be important in cumulus expansion in rabbits. 展开更多
关键词 RABBIT Bone morphogenetic protein 15 OOCYTE Gene cloning Fluorescent quantitative RT-PCR
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Comparison of Soleus Muscle Fibers in Rats and Rabbits at Different Stages of Postnatal Development 被引量:5
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作者 朱道立 王康乐 陈佩林 《Zoological Research》 CAS CSCD 北大核心 2004年第6期543-550,共8页
In the present study,the effects of postnatal development on the number and distribution of skeletal muscle fibers of different types in hind leg of rat and rabbit were studied.The soleus muscles of rats aged 2 days,2... In the present study,the effects of postnatal development on the number and distribution of skeletal muscle fibers of different types in hind leg of rat and rabbit were studied.The soleus muscles of rats aged 2 days,2,4,6,8,and 10 weeks (body weight 10,32,95,190,280,and 320 g),and rabbits aged 2 days,2,4,8,12,16,20,and 24 weeks (body weight 100,220,400,750,1 200,1 600,2 100,and 2 500 g) were stained with succinic dehydrogenase.With an image analysis system,the X-Y coordinates of fibers were used to analyze the growth-related changes.The results of present study showed that three types of fibers were found in the soleus muscles of rat and rabbit,i.e.,type Ⅰ (slow oxidative),ⅡX (fast oxidative),and ⅡA (fast oxidative glycolytic).The type Ⅰ fibers were present throughout the muscle that had a uniform distribution and tended to increase in number with aging.Type ⅡX fibers were scattered throughout the muscle and decreased markedly in number with aging.Type ⅡA fibers were located at the central and deep regions,and showed a little or no change in number and distribution with aging.While be of age,type ⅡA and ⅡX fibers became restricted to the superficial region.No type ⅡB fibers were detected.Type ⅡA fibers had the largest diameter,type Ⅰ intermediate and type ⅡX the smallest.Mean cross-sectional area of each type fibers of rabbits was larger than that of rats.The present results indicate that the number and distribution of muscle fibers of different types in hind limb of rat and rabbit change with the process of postnatal growth. 展开更多
关键词 RAT RABBIT Muscle fiber type Postnatal development
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Diagnose of Rabbit Pasteurellosis and Colibacillosis Mixed Infection and Drug Sensitive Test 被引量:2
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作者 朱芝秀 蒋新华 +4 位作者 邓舜洲 林敏 刘小兰 柳仲 彦超 《Agricultural Science & Technology》 CAS 2017年第2期294-298,313,共6页
In order to diagnose diseased rabbits, dead rabbits were dissected, and 4 strains, DX01, DX02, JX01 and JX02 were obtained from bacterial isolation and culture. According to conventional biochemical method, physiologi... In order to diagnose diseased rabbits, dead rabbits were dissected, and 4 strains, DX01, DX02, JX01 and JX02 were obtained from bacterial isolation and culture. According to conventional biochemical method, physiological-biochemical test showed that DX01 and DX02 could produce acids and gases in the presence of mannitol, lactose, glucose and maltose, and did not ferment sucrose, reactions of sodium citrate, urea, V-P, hydrogen sulfide and gelatin were negative, while reactions of indole, M-R and nitrate were positive, which were in accordance with the characteristics of colibacillus; and JX01 and JX02 both fermented mannitol, sucrose, glucose, maltose, and did not ferment lactose, reactions of indole, M-R, V-P, hydrogen sulfide and gelatin were negative, while the reaction of nitrate was positive, which were in accordance with the characteristics of Pasteurella. 16S rDNA detection and sequencing showed that JX01 and JX02 shared 100% homology with Pas- teurella. The animal inoculation test of isolated bacteria showed that the mice in the experiment groups all died within 2 d. Original cultures were isolated from dead mice. DX01 and DX02 were identified as colibacillus, JX01 and JX02 were identified as Pasteurella, and the death of diseased rabbits was caused by mixed infection of pasteureUosis and colibacillosis. Drug sensitive test showed that DX01 and DX02 were only sensitive to kanamycin, ofloxacin and sulfamethoxydiazine, and not sensitive to other drugs, and JX01 and JX02 were sensitive to ofloxacin, sulfamethoxydiazine, gentamicin, furazolidone, doxycycline, streptomycin, trimoxazole and spectinomycin, and were moderately sensitive to cefradine. Ofloxacin and sulfamethoxydiazine are preferable for the clinical treatment of this disease. 展开更多
关键词 RABBIT Colibacillus PASTEURELLA Diagnosis
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Effect of Chinese Herbal Feed Additive on Meat Quality of Rex Rabbit 被引量:19
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作者 袁政委 蒲万霞 +2 位作者 陈国顺 刘渤涛 高海霞 《Agricultural Science & Technology》 CAS 2009年第2期122-126,共5页
[ Objective] The aim of this study was to provide a theoretical basis for population and application of Chinese herbal feed additive in the rex rabbit breeding. [ Methyl] 108 weaned -rex rabbits aged 40 days were divi... [ Objective] The aim of this study was to provide a theoretical basis for population and application of Chinese herbal feed additive in the rex rabbit breeding. [ Methyl] 108 weaned -rex rabbits aged 40 days were divided into three groups with thirty -six each group. Group A were fed basal diet, while group B were fed basal diet supplemented with 0.3% Chinese herbal feed additive and group C were fed basal diet supplemented with 0.4% Chinese herbal feed additive. The meat quality indexes were measured when feeding to 150 age in days. [ Result] There was significant difference among pH value, water loss rate, storing loss rate and crude protein content in each group (P〈0.05), but no significant difference was found in tenderness, cooking percentage, moisture content and crude fat content ( P 〉 0.05). The total content of ami- no acids, essential amino acids and semi essential amino acids as well as main delicious amino acids was highest in group C accounting for 23.84%, 11.47% and 8.32% respectively, next came group B accounting for 20.94%, 10.64% and 6.81% respectively, and lowest in group C ( control group) accounting for 19.06%, 9.61% and 6.46% respectively. [ Conclusion] The Chinese herbal feed additive can improve meat quality of rex rabbit the best addition of 0.4%. 展开更多
关键词 Chinese herbal feed additive Rex rabbit Meat quality
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Preparation of High Titer Et Immune Serum by Low-Aged Animals 被引量:2
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作者 朱壮春 陈阳 +6 位作者 郝东升 王艳茹 马玉妹 曹向可 穆艮艮 李金坤 史相国 《Agricultural Science & Technology》 CAS 2009年第5期116-118,共3页
[Objective] The study aimed to establish an approach to high titer Et immune serum preparation by low-aged Japanese rabbits. [Method] Antigen of Et was prepared at first, Japanese rabbits were taken as immunized anima... [Objective] The study aimed to establish an approach to high titer Et immune serum preparation by low-aged Japanese rabbits. [Method] Antigen of Et was prepared at first, Japanese rabbits were taken as immunized animal, and divided into two groups for experiments, one is two-month-old group (T group), and another is six-month-old group (S group). Japanese rabbits were continuous by immunized with low-dose by using auricular intravenous method, then immune sera were collected. Immune serum antibody titer was determined with micro-agglutination reaction method. E Resultl Agglutination reaction showed that the Et serum titer of S group is higher than that of T group in the first testing with the same dose. But in the second testing, the serum titer of the T group and and the S group was consistent, [Conclusien] The animals in the T group (Japanese rabbits) were fewer months old, and produced high titer antiserum was which consistent with the S group, which indicated that the method of preparing of high titer Et immune serum by low-aged Japanese rabbits was feasible. 展开更多
关键词 Edwardsiella tarda IMMUNITY Immune serum Japanese rabbit
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老舍小说融中西诗学的实践 被引量:3
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作者 徐德明 《中国现代文学研究丛刊》 CSSCI 北大核心 2000年第1期211-222,共12页
关键词 文学研究 老舒 小说 中国 西方国家 诗学 <<兔>>
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Effect of Implanted Chip System on Blood Pressure Regulation in Rabbits 被引量:1
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作者 高兴亚 王汉军 +4 位作者 朱国庆 郭瑞 张枫 张颖 陆祖宏 《Journal of Nanjing Medical University》 2004年第6期279-282,共4页
Objective: To evaluate the efficiency of an implanted chip system on blood pressure regulation. Methods: The mean arterial pressure (MAP) and heart rate (HR) were recorded in anesthetized rabbits. Based on the set poi... Objective: To evaluate the efficiency of an implanted chip system on blood pressure regulation. Methods: The mean arterial pressure (MAP) and heart rate (HR) were recorded in anesthetized rabbits. Based on the set point theory, an implanted chip system was designed to regulate the blood pressure by stimulating the aortic depressor nerve (ADN) according to the feedback of blood pressure. The blood pressure regulation induced by the implanted chip system was carried out twice (lasted for 15 min and 60 min respectively) and the change of MAP and HR during the regulation was compared with the control. Results: There was a significant decrease of MAP during the first regulation ([-32.0 ± 6.6] mmHg) and second regulation ([-27.4 ± 6.2] mmHg) compared with the control (P<0.01). The HR was also significantly decreased during regulation compared with the control. Both MAP and HR returned to the baseline immediately without rebound after the regulation ceased. Conclusion: The implanted chip system can regulate the blood pressure successfully and keep the blood pressure in a lower constant level without adaptation. 展开更多
关键词 implanted chip blood pressure set point HYPERTENSION
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Rabbit Oviductin“DPF-1”is Tissue Specific but not Species Specific 被引量:3
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作者 沈虹 刘传聚 +3 位作者 顾正 吕吉宁 成国祥 左嘉客 《Developmental and Reproductive Biology》 1996年第2期25-33,共9页
Monoclonal antibodies (McAb) were prepared by fusing sp2/0 myeoma cell with spleen cell of mice Balb/c which were immunized with 64 kDa rabbit oviductin (DPF-1). Supernatants of hybridoma cell were screened for produc... Monoclonal antibodies (McAb) were prepared by fusing sp2/0 myeoma cell with spleen cell of mice Balb/c which were immunized with 64 kDa rabbit oviductin (DPF-1). Supernatants of hybridoma cell were screened for producing anti-DPF1 McAbs with enzyme-linked immunosorbent assay (ELISA) and Western blotting. Positive hybrids were cloned by using the technique of limiting dilution. Two strains of hybridoma cell were obtained,named 3E8 and 5A7. Both McAbs were determined as I'm. Results of Western blotting showed that the two McAbs recognised the DPF-1 hand (64kDa) specifically. By using McAb-5A7 as probe, we found that DPF-1 did not occur in the tissues of spleen, uterus, ovary,small intestine, skeleton muscle, brain, liver,heart, lung and kidney, except for that of oviduct; some DPF-1 homologous molecules were also revealed itself in that of oviduct tissues of mouse and golden hamster Their apparent molecular weights were 32kDa,72kDa in mouse, and 49kDa in golden hamster. All these results indicated that DPF-1 is tissue specific not species specific. (To whon all corrcspondcnce should be addrcssed. Prcsent addrcss Shanghai Institute of Planned Parenthood Rcscarch. Shanghai 200032. PRC. ) 展开更多
关键词 oviductin DPF- 1 monoclonal antibody
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渤海俗所贵者“太白山之菟”考辨 被引量:2
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作者 姚玉成 《史学集刊》 CSSCI 北大核心 2008年第2期75-80,共6页
《新唐书·渤海传》记渤海"俗所贵者"总计十四项。其中的"太白山之菟",唐晏、黄维翰和金毓黻诸先生皆主张应改为"太白山之兔"。从上个世纪八十年代后期开始,这种传统的观点受到了不断的挑战,相继出现... 《新唐书·渤海传》记渤海"俗所贵者"总计十四项。其中的"太白山之菟",唐晏、黄维翰和金毓黻诸先生皆主张应改为"太白山之兔"。从上个世纪八十年代后期开始,这种传统的观点受到了不断的挑战,相继出现"东北虎"说和"茯苓"说两种观点,对于这些新观点的提出与发表,在进一步寻求根据的过程中,我们逐渐感到新说仍难持立,旧说尚难率而易之。 展开更多
关键词 渤海 太白山之菟 太白山之
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Microscopic Structure of Rabbit Hair
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作者 郭天芬 王欣荣 +1 位作者 李维红 牛春娥 《Agricultural Science & Technology》 CAS 2012年第12期2585-2588,2606,共5页
[Objective] The paper was to explore the microscopic structure of rabbit hair. [Method] Single rabbit hair with typical features was selected to observe its mi- croscopic structure from tip to root, and its fiber diam... [Objective] The paper was to explore the microscopic structure of rabbit hair. [Method] Single rabbit hair with typical features was selected to observe its mi- croscopic structure from tip to root, and its fiber diameter was also measured. [Result] The rabbit hair tip was constituted by scale layer and cortical layer, without medullary layer; the middle part was generally constituted by scale layer, cortical layer and medullary layer; the root had no medullary layer, and the scale layer was wheatear-shaped. This was the property of rabbit hair, which could be used for comparative studies with other animal fiber and species identification. Rabbit hair had developed medullary layer, and fiber diameter was positively related to column number of medullary cavity. The hair generally was single column, and coarse hair was multi-column. Single rabbit hair was the finest in the tip, coarse in the middle and tapering in the root. The diameter difference of various parts was large, and the ex- ternal growth characteristics was spindle-shaped. [Conclusion] Using biological micro- scope method to identify different animal fur and product species is more objective and simple. 展开更多
关键词 RABBIT HAIR Microscopic structure Average diameter
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Determination of Diphenytriazol (DL111-IT) in Rabbit Plasma by High-Performance Liquid Chromatography with Fluorescence Detection
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作者 何敏 姚彤炜 《Journal of Chinese Pharmaceutical Sciences》 CAS 2005年第1期56-60,共5页
Aim To develop an HPLC method with fluorescence detection for the assay ofDL111-IT in rabbit plasma. Methods DL111-IT and internal standard glybenzcyclamide in rabbit plasmawere extracted with chloroform. The determin... Aim To develop an HPLC method with fluorescence detection for the assay ofDL111-IT in rabbit plasma. Methods DL111-IT and internal standard glybenzcyclamide in rabbit plasmawere extracted with chloroform. The determination was performed on a Diamonsil ODS-C_(18) column(150 mm x 4.6 mm, 5 μm) with a mobile phase of acetonitrile and 0.025 mol·L^(-1) diammoniumhydrogen phosphate buffer (pH 5.0, adjusted by phosphoric acid) (60:40, V/V) at a flow-rate of 1.0mL·min^(-1) . Fluorescence detector was operated at excitation wavelength of 250 nm and emissionwavelength of 332 nm. Results The calibration curve in plasma was linear from 1.00 - 20.00ng·mL^(-1) ( r = 0.999 6, n = 5). The method afforded average extracting recoveries of 85.3% ±1.3%, 84.9% ± 2.7% and 85.8% ± 1.8%, and the average method recoveries were 99.5% ±0.4%, 102.1%± 1.8% and 101.3% ± 2.4% for the high (20.00 ng·mL^(-1)) , middle (10.00 ng·mL^(-1)) and low (1.00 ng·mL^(-1)) check samples, respectively. The intra-day (n = 5) and inter-day (n = 5) precisions(RSD) were less than 3.0% and 7.0%, respectively. The limit of detection and quantitation for themethod were 0.3 ng·mL^(-1) (S/N = 3) and 1 ng·mL^(-1) (S/N = 10, RSD<7.0%) plasma sample,respectively. Conclusion The developed method was accurate, sensitive, simple and could be used forpharmacokinetic study of DL111- IT. 展开更多
关键词 DIPHENYTRIAZOL contragestazol DL111-IT HPLC fluorescence detection pharmaco-kinetics glybenzcyclamide
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Inhibitory Effects of Flufenamic Acid and Mefenamic Acid on Experimental Uveitis in Rabbits
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作者 申竹芳 George C.Y.Chiou 《Journal of Chinese Pharmaceutical Sciences》 CAS 1993年第1期59-63,共5页
The experimental uveitis was induced by injecting lens protein into the antertor cham- ber of rabbit's eye.A special fluorophotometer was used for objectively measuring the flaoreseein level in the anterior chambe... The experimental uveitis was induced by injecting lens protein into the antertor cham- ber of rabbit's eye.A special fluorophotometer was used for objectively measuring the flaoreseein level in the anterior chamber of the eve to rellect the degree of inflammation.When administered in- travenously.the inhibitory effects of flufenamic acid and mefenamic acid on experimental uveius showed a dose-dependent relationship,The former at dosages 5.0.12.5 and 250 mg kg decreased the areas under the time-response curve to 22.3%.11.5% and 9.3% of the control.respcctively:however the latter at dosages 6.2.12.5 and 25.0 mg/kg decreased the areas under the curve to 35.5%.21.0% and 8.6% of the control,respectively.When instilled by ocular route.50μl of 1% eye-drops of flufenmic acid or mefenamic acid lowered the fluoreseein levels of treated eyes as well as contra-lateral eyes.The areas under the time-response curve for treated eyes were decreased to 20.3% of the control and those of contra-lateral eyes to about 50% of the control.The results indicate that both flufenamic and mefenamic acids,applied intravenously or topically,can inhibit ocular inflammation. 展开更多
关键词 Flufenamic acid Mefenamic acid Ocular inflammation
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Effects of octreotide on acute necrotizing pancreatitis in rabbits 被引量:21
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作者 Lászl6Czakó PéterHegyi +6 位作者 TamásTakács CsabaGóg AndrásFarkas YvetteMándy Ilona Sz.Varga LászlóTiszlavicz JánosLonovics 《World Journal of Gastroenterology》 SCIE CAS CSCD 2004年第14期2082-2086,共5页
AIM:To assess the role of oxygen-derived free radicals and cytokines in the pathogenesis of taurocholic acid-induced acute pancreatitis,and to evaluate the preventive effects of octreotide towards the development of a... AIM:To assess the role of oxygen-derived free radicals and cytokines in the pathogenesis of taurocholic acid-induced acute pancreatitis,and to evaluate the preventive effects of octreotide towards the development of acute pancreatitis. METHODS:Acute pancreatitis was induced in male New Zealand white rabbits by retrograde injection of 0.8 mL/kg·b.m,of 50 g/L sodium taurocholate (NaTC) in the pancreatic duct.Sham- operated animals served as control.Octreotide i mg/kg·b.m. was administered subcutaneously before the induction of pancreatitis.Blood was taken from the jugular vein before and at 1,3,6,12 and 24 h after pancreatitis induction. Serum activities of amylase,IL-6 and TNF-α and levels of malonyl dialdehyde (MDA),glutathione (GSH),glutathione peroxidase (GPx),catalase and superoxide dismutase (Mn-, Cu-,and Zn-SOD) in pancreatic tissue were measured. RESULTS:Serum TNF-α and IL-6 levels increased significantly 3 h after the onset of pancreatitis,and then returned to control level.The tissue concentration of MDA was significantly elevated at 24 h,while the GSH level and GP-x,catalase,Mn-SOD,Cu-,Zn-SOD activities were all significantly decreased in animals with pancreatitis as compared to the control.Octreotide pretreatmnent significantly reversed the changes in cytokines and reactive oxygen metabolites.Octreotide treatment did not alter the serum amylase activity and did not have any beneficial effects on the development of histopathological changes. CONCLUSION:Oxygen-derived free radicals and proinflammatory cytokines are generated at an early stage of NaTc-induced acute pancreatitis in rabbits.Prophylactic octreotide treatment can prevent release of cytokines and generation of reactive oxygen metabolites,but does not have any beneficial effects on the development of necrotizing pancreatitis. 展开更多
关键词 Animals CYTOKINES inhibitors Male OCTREOTIDE PANCREAS Pancreatitis Acute Necrotizing control RABBITS Reactive Oxygen Species Research Support Non-U.S. Gov't Taurocholic Acid
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Characteristics of liver on magnetic resonance diffusion-weighted imaging:Dynamic and image pathological investigation in rabbit liver VX-2 tumor model 被引量:10
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作者 You-Hong Yuan En-Hua Xiao +6 位作者 Jian-Bin Liu Zhong He Ke Jin Cong Ma Jun Xiang Jian-Hua Xiao Wei-Jian Chen 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第25期3997-4004,共8页
AIM: To investigate dynamical and image pathological characteristics of the liver on magnetic resonance (MR) diffusion-weighted imaging (DWI) in the rabbit VX-2 tumor model. METHODS: Forty New Zealand rabbits we... AIM: To investigate dynamical and image pathological characteristics of the liver on magnetic resonance (MR) diffusion-weighted imaging (DWI) in the rabbit VX-2 tumor model. METHODS: Forty New Zealand rabbits were included in the study and VX-2 tumor piece was implanted intrahepatically. Fifteen animals received two intrahepatic implantations while 25 had one intrahepatical implantation. DWI, T1- and T2-weighted of magnetic resonance imaging (MRI) were carried out on the 7th and the 14th d after implantation and DWI was conducted, respectively on the 21th d. Ten VX-2 tumor samples were studied pathologically. RESULTS: The rate of lump detected by DWI, TlWI and T2WI was 78.7%, 10.7% and 53.5% (X^2 =32.61, P 〈 0.001) on the 7th d after implantation and 95.8%, 54.3% and 82.9% (X^2 = 21.50, P 〈 0.001) on the 14th d. The signal of most VX-2 tumors on DWI was uniform and it was equal diffusion coefficient (ADC). did not decrease on the 7th on the map of apparent The signal of VX tumors d after implantation, most of them slowly growing during the week following implantation without significant cell dying within the tumor. VX-2 tumors grew increasingly within 14 d after implantation but the signal of most VX-2 tumors on DWI or on the map of ADC was uniform or uneven and ADC of VX tumors decreased obscurely or slightly because tumor necrosis was still not obvious. On the 21th d after implantation, the signal of most VX-2 tumors on DWI or on the map of ADC was uneven because tumor necrosis was evident and ADC of VX-2 tumor necrotic areas decreased. The areas of viable cells in VX-2 tumors manifested a high signal on DWI and a low signal on the map of ADC. The areas of dead cells or necrosis in VX-2 tumors manifested low signals on DWI and low, equal or high signals on the map of ADC but they manifested high signals on DWI and on the map of ADC at the same time when the areas of necrotic tumor became liquefied or cystic. The border of tumors on DWI appeared gradually distinct and internal signals of tumor became progressively uneven. CONCLUSION: The manifestations of viable, necrotic and liquefied or cystic areas in VX-2 tumors on DWI are typical and DWI is of significant and potential values in clinical application in both the early detection and diagnosis of liver tumors. 展开更多
关键词 LIVER VX-2 tumor Diffusion-weightedimaging Apparent Diffusion Coefficient RABBIT
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Soil Erosion and Vegetation Succession in Alpine Kobresia Steppe Meadow Caused by Plateau Pika——A Case Study of Nagqu County, Tibet 被引量:22
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作者 WEI Xinghu LI Sen +1 位作者 Yang Ping Cheng Huaishun 《Chinese Geographical Science》 SCIE CSCD 2007年第1期75-81,共7页
This paper evaluated the impacts of mounds created by the plateau pika (Ochotona curzoniae) on the vegetation composition, structure, and species diversity of an alpine Kobresia steppe meadow in Nagqu County, Tibet ... This paper evaluated the impacts of mounds created by the plateau pika (Ochotona curzoniae) on the vegetation composition, structure, and species diversity of an alpine Kobresia steppe meadow in Nagqu County, Tibet Autonomous Region, China. Based on mound height or the depth of erosion pit, we defined five stages of erosion and compared the floristic features of communities at these stages with those in undisturbed sites. In the study area, the mounds and pits covered up to 7% of the total area. Lancea tibetica, Lamiophlomis rotata, and Potentilla biflarca were the dominant species in erosion pits, and Kobresia pygmaea, the dominant species in undisturbed sites, became a companion species in eroded areas. In the process of erosion, the original vegetation was covered by soil ejected by the pika, then the mounds were gradually eroded by wind and rain, and finally erosion pits formed. The vegetation coverage increased with increasing erosion stages but remained significantly lower than that in undisturbed sites. Improved coverage eventually reduced soil erosion, and pit depth eventually stabilized at around 20cm. Aboveground biomass increased with increasing erosion stage, but the proportion of low-quality forage reached more than 94%. The richness index and Shannon-Wiener index increased significantly with increasing erosion stage, but the richness index in mound and pit areas was significantly lower than that in undisturbed sites. 展开更多
关键词 plateau pika alpine Kobresia steppe meadow vegetation succession diversity TIBET
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MR diffusion-weighed imaging of rabbit liver 被引量:7
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作者 You-Hong Yuan En-Hua Xiao Zhong He Jun Xiang Ke-Li Tang Rong-Hua Yan Ke Jin Zi-Wen Peng 《World Journal of Gastroenterology》 SCIE CAS CSCD 2005年第35期5506-5511,共6页
AIM: To study the techniques of MR diffusion-weighed imaging (DWI) for normal rabbit liver. METHODS: After 15 normal New Zealand white rabbits and one New Zealand white rabbit implanted with VX-2 tumor were anesth... AIM: To study the techniques of MR diffusion-weighed imaging (DWI) for normal rabbit liver. METHODS: After 15 normal New Zealand white rabbits and one New Zealand white rabbit implanted with VX-2 tumor were anesthetized with 30 soluble pentobarbitone, DWI was performed respectively for different b values, repetition times (TR) or thicknesses, when other parameters were the same and magnetic resonance imaging (MRI) was performed respectively, or with different field of views (FOV) or coil when other parameters were the same. The distinction between groups was analyzed by SPSS10.0 with apparent diffusion coefficient (ADC), quality index (QI) or signal-noise ratio (SNR). RESULTS: As b value increased, liver ADC, QI and SNR of DWI became smaller and simultaneously (F= 292.87, 156.1, 88.23, P〈0.01). QI of DWI was high, when bvalue was 10, 50 or 100 respectively, but the distinction between them was insignificant; when b value was 800, QI and SNR of DWI were low. QI and SNR of DWI had no significant difference between TR = 4 000, 6 000 and 8 000. QI of DWI with 2 mm thickness was bigger than that with 5 mm thickness (t = 3.04, P〈0.01), but SNR of DWI with 2 mm thickness was significantly smaller (t = -17.86, P〈0.01). SNR of MRI with knee joint coil was obviously bigger than that with cranium coil It = -5.77 (TlWI) or -4.02 (T2WI), P〈0.01], but QI of MRI was smaller on the contrary It = 7.10 (TlWI) or 3.97 (T2WI), P〈0.01]. When FOV was enlarged gradually, SNR of MRI increased IF= 85.81 (T1WI) or 221.96 (T2WI), P〈0.01], but QI firstly increased, then decreased IF= 68.67 (TlWI) or 69.46 (T2WI), P〈0.01] and QI of MRI was the biggest when FOV was 20 crux15 cm. CONCLUSION: The scanning technique is very important in DWl of rabbit liver and the overall quality of DWl with b (100 s/mm2), thickness (2 mm), cranium coils and FOV(20 cm×15 cm) was best in our study, when other parameters were the same. 展开更多
关键词 LIVER RABBITS Magnetic resonance imaging Diffusion-weighted imaging TECHNOLOGY
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Antibodies against the C-terminal peptide of rabbit oviductin inhibit mouse early embryo development to pass 2-cell stage 被引量:8
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作者 PAN YONG, ZHENG GU, JIN PING LUO, JUN Ru WANG, JIA KE TSO National Laboratory of Contraceptives and Devices Research, Shanghai Institute of Planned Parenthood Research, 21.40 Xietu Road, Shanghai 200032, China 《Cell Research》 SCIE CAS CSCD 2002年第1期69-78,共10页
A full-length rabbit oviductin cDNA(1909bp) was cloned. It consists of a 5’-UTR of 52bp, an open reading frame (ORF) of 1374bp and a 3’-UTR of 483bp and has more than 80% homology with that of other mammal oviductin... A full-length rabbit oviductin cDNA(1909bp) was cloned. It consists of a 5’-UTR of 52bp, an open reading frame (ORF) of 1374bp and a 3’-UTR of 483bp and has more than 80% homology with that of other mammal oviductins. N-terminal peptide (NTP) (384 residues) and C-terminal peptide (CTP) (73 residues) of deduced protein precursor has about 80% and 50% identity with that of other mammals respectively. Fusion proteins GST-NTP 368(1R-368N)and GST-CTP73 (369F-441A) were expressed and purified. NH2-terminal of CTP sequencing reveals that the purified protein is consistent with the deduced one. In order to study the function of NTP and CTP the mouse anti-NTP and rabbit anti-CTP antisera were prepared. Tissue-specific (skeleton muscle, oviduct, uterus, ovary, liver, heart and brain) analysis indicated that rabbit oviductin was only found in oviduct. The conditioned medium derived from the rabbit oviduct mucosa epithelial cells has a function of overcoming the early embryonic development block of Kunming mous e cultured in vitro. Anti-CTP antiserum could totally inhibit the early embryo development at 2-cell stage cultured in the conditioned culture medium, but anti-NTP antiserum couldn’t. There was a positive relationship between the ratio of early embryos at development block and the dosage of anti-CTP antiserum added in the conditioned culture medium. These results suggest that oviductin has a function not only on fertilization, but also on the release of early embryonic development block, and the later function domain of rabbit oviductin may be situate in its C-terminal. 展开更多
关键词 Rabbit oviductin C-terminal peptide early embryo DEVELOPMENT loss of function.
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Trans-arterial gene therapy for hepatocellular carcinoma in a rabbit model 被引量:7
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作者 Tao Gu Cai-Xia Li Yan Feng Qian Wang Chun-Hai Li Chuan-Fu Li 《World Journal of Gastroenterology》 SCIE CAS CSCD 2007年第14期2113-2117,共5页
AIM: To study the effect of adenovirus (Ad)-p53 gene therapy on hepatocellular carcinoma (HCC) in a rabbit model.METHODS: VX2 tumor was grown in the liver of 24rabbits. Animals were divided into four groups: gr... AIM: To study the effect of adenovirus (Ad)-p53 gene therapy on hepatocellular carcinoma (HCC) in a rabbit model.METHODS: VX2 tumor was grown in the liver of 24rabbits. Animals were divided into four groups: group A receiving trans-arterial gene therapy (Ad-p53) only,group B receiving combined Ad-p53 therapy and transarterial embolization (lipiodol), group C receiving transarterial chemoembolization (lipiodol + mitomycin C),control group (D) receiving sodium chloride. Tumor volume (V1) was measured by using MRI (d 13).Interventional procedure was applied (d 14).Tumor volume (V2) was assessed by MRT (d 21) and the mean ratio (V2/V1) was calculated. After the second MRI,specimens of the liver were abstained and examined immunohistochemically using mutant-type p53 antibody.The positive expression was scored.RESULTS: Compared with control group ((^-x) = 3.14± 0.64), therapeutic groups all showed a significant decrease in the tumor growth ratio (P 〈 0.05). A slight difference was found between group A ((^-x) =2.35 ±0.59) and group B ((^-x) = 1.75 ± 0.28) (P = 0.048). Nostatistically significant difference was observed between group B and group C ((^-x) = 2.00 ± 0.44). The positive expression rate of mutant-type p53 was the lowest in group B and significantly different between group A and group C (P 〈 0.05).Compared to the control subjects, groups A and C both showed a decrease in the expression of mutant-type p53, but there was no significant difference between them.CONCLUSION: Trans-arterial Ad-p53 gene therapy can reduce tumor growth of HCC in rabbit model. 展开更多
关键词 Liver hepatocellular carcinoma Trans-arterial chemoembolization Gene therapy
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