共查询到20条相似文献，搜索用时 627 毫秒
1.
生物活性肽是一种重要的生理调节物，参与神经组织及机体的免疫调节，并且有促进细胞的增殖与生长、影响养分的消化与吸收等作用。笔者重点综述了乳蛋白源生物活性肽中的阿片肽类、免疫刺激肽、、酪蛋白磷酸肽、抗血凝肽、抗高血压肽等的构成、功能及生理意义。 相似文献
2.
牛乳中的蛋白质氨基酸序列里天然含有生物活性肽.而人体所吸收的蛋白质经过自身消化酶的催化的水解反应也会产生生物活性肽.这些具有功能作用的肽直接影响人体的许多生理过程,如影响人体行为、胃肠系统、激素调节、免疫反应、神经调节等.目前,国内外学者已对生物活性肽与不同生理类别的特定生物反应及生物活性肽的应用进行了研究.例如,从酪... 相似文献
3.
生物活性肽是对生物体的生命活动有益或具有生理作用的肽类化合物.目前,它成为全世界研究的热点.大量的国内外研究结果表明:生物活性肤是涉及生物体内多种细胞功能的生物活性物质,在生物体内已发现几百种.不同的生物肤具有不同的结构和生理功能,如抗病毒、抗癌、抗血栓、抗高血压、免疫调节、激素调节、抑菌、降胆固醇等作用.本文就近年来几种具有重要应用价值的生物活性肽的研究现状与应用前景作一简要概述. 相似文献
4.
发酵乳经乳酸菌发酵水解后含有丰富的多肽类物质,发酵乳源生物活性肽不仅具有丰富的营养价值,还具有抗氧化、降血压、抗菌等多种生物功能.本文综述发酵乳中多种功能生物活性肽,阐明乳酸菌蛋白酶导致的生物活性肽多样性,解析抗氧化肽、抗高血压肽、抗菌肽和其他功能活性肽的作用机制、多肽序列及构效关系,最后介绍了生物活性肽的序列鉴定与功... 相似文献
5.
生物活性肽在细胞生理以及机体代谢方面具有重要的调节作用。近些年来,研究者们在两栖动物体的皮肤分泌物中发现大量的生物活性肽。文中在查阅大量的相关文献基础上,对两栖动物皮肤中分泌的生物活性肽的种类、来源、作用机理及相关的生理作用等进行了综述,以期为扩大生物活性肽的研究与应用提供参考。 相似文献
6.
生物活性肽是对生物体的生命活动有益或具有生理作用的肽类化合物。目前,它成为全世界研究的热点、大量的国内外研究结果表明：生物活性肽是涉及生物体内多种细胞功能的生物活性物质,在生物体内已发现几百种,不同的生物肽具有不同的结构和生理功能,如抗病毒、抗癌、抗血栓、抗高血压、免疫调节、激素调节、抑菌、降胆固醇等作用。本文就近年来几种具有重要应用价值的生物活性肽的研究现状与应用前景作一简要概述。 相似文献
7.
生物活性肽是一类能够调节生物机体生物活动或具有特殊生理作用的肽类，它们分布广泛，多来源于动植物，在生物体内具有重要的作用。笔者综述了营养肽、免疫肽、促生长肽、抗高血压肽、抗菌肽的来源、种类和功能，以期为生物活性肽的研究和应用提供参考。 相似文献
8.
1 生物活性肽的分类目前 ,生物活性肽尚没有较为一致的分类 ,按其来源可以分为内源性生物活性肽 (如内啡肽和脑啡肽 )和潜在于天然蛋白质中的外源性生物活性肽。外源性活性肽与内源性活性肽的活性中心序列相同或相似 ,它们在动物消化过程中被释放出来 ,通过直接与肠道受体结合 ,参与机体的生理调节作用或被完整吸收进入循环 ,从而发挥与内源性活性肽相同的功能。外源性生物活性肽多以特定的氨基酸序列肽片段存在于蛋白质中 ,按其原料来源可分成乳肽、大豆肽、玉米肽、蛋白肽、畜产肽、水产肽、丝蛋白肽、复合肽等 ,按功能大致可分为生理活… 相似文献
9.
随着生物活性肽吸收理论的提出及其生理活性的发现,生物活性肽已成为医药、食品等领域的研究热点。同时,一些学者也把此项研究延伸到了饲料领域。本文综述了生物活性肽的分类、来源及其主要生理作用。 相似文献
10.
外源性生物活性肽(eBAP)是饲料或食物中的某些蛋白质所隐含的一种特殊肽质,这些特殊肽在消化酶作用下释放出来,以肽的形式被吸收后,参与摄食、消化、代谢及内分泌调节等多种生理作用. 相似文献
11.
In late December 1985, 1485 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1985 and 44% of them responded. Veterinarians reported that 137,300 dogs were blood-tested to check for microfilariae and 1210 dogs were found with heartworm. Another 36 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number diagnosed in 1985 as 1247 (0.91%). Heartworm was reported from all provinces except Prince Edward Island, Newfoundland and Saskatchewan but most (1126) of the cases were in Ontario. Southwestern Ontario continued to be the primary focus of the infection in Canada. From Quebec, 91 cases were reported mostly from and around Montreal. From Manitoba, 19 cases were reported from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 28% of the cases were observed with clinical signs of heartworm disease and 78% had a history of not having left Canada. 相似文献
12.
In late November 1988, 1581 small and mixed animal clinics and institutional veterinarians across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1988, and 46% of them responded. Veterinarians reported that 181,577 dogs were blood-tested for heartworm disease and 367 dogs were found with D. immitis microfilariae. Another 60 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1988 as 441 (0.24%). 相似文献
13.
In late December 1984, 1853 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1984 and 35% of them responded. Veterinarians reported that 97,794 dogs were blood-tested to check for microfilariae and 1417 dogs (1.45% of those tested) were found with heartworm. Another 34 dogs were amicrofilaremic, but were diagnosed as having heartworm disease, to give the total number diagnosed in 1984 as 1451 (1.48%). Heartworm was reported from all provinces except Prince Edward Island and Newfoundland but most (1310) of the cases were in Ontario. In Quebec, 126 cases were reported mostly from west of Montreal. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 27% of the cases were observed with clinical signs of heartworm disease and 72% had a history of not having left Canada. Southwestern Ontario continued to be the primary focus of the infection. 相似文献
15.
In late November 1991, 1883 clinics in Canada were sent a questionnaire to assess the status of Dirofilaria immitis in dogs in 1991 and there was a 60.0% response. There were 344,031 dogs tested for heart-worm (HW), 627 were found infected and the prevalence of HW infection was 0.18%. There were 417 dogs with HW in Ontario, 116 in Manitoba, 38 in Quebec, 53 in British Columbia, three in Alberta, and one in Nova Scotia. In British Columbia, all of the infected dogs but one were from the Okanagan valley which, as from 1991, is a new focus of infection in Canada. Most dogs with HW had not been on preventive medication in 1990, and the prevalence among dogs tested and unprotected was 0.59%. That prevalence was considerably higher in endemic areas. Companion dogs, over three years of age and maintained primarily outdoors in rural areas, were most frequently infected. One cat was diagnosed with D. immitis and 33 dogs had Dipetalonema reconditium. 相似文献
16.
In late November 1989, 1732 clinics and institutional veterinarians were sent a questionnaire to assess the status of Dirofilaria immitis, and 51.7% responded. Of 247,716 dogs tested, 394 had D. immitis microfilariae and 51 were amicrofilaremic for a total of 445 cases and heartworm prevalence of 0.17%. Most (408) of these dogs had no preventive medication and the prevalence among dogs tested and unprotected was 1.01%. That prevalence was considerably higher in endemic areas. Thirty-seven dogs with heartworm had preventive medication. Heartworm was most frequent in companion dogs over three years of age maintained outdoors in rural areas. About 75% of the cases had never left Canada, 26% had clinical signs and 125 were not treated. Heartworm was reported from British Columbia, Manitoba, Ontario, Quebec, Nova Scotia and Newfoundland, but 383 cases were in Ontario. South-western Ontario was the primary focus of infection. There were 33 cases in Quebec and 24 in Manitoba, mainly found in and around Metropolitan Montreal and Winnipeg respectively. 相似文献
17.
In late November 1987, 1246 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1987, and 50% of them responded. Veterinarians reported that 165,428 dogs were blood tested for heartworm disease and 511 dogs were found with D. immitis microfilariae. Another 78 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1987 as 589 (0.35%). 相似文献
18.
In late December 1986, 1224 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1986; 46% of them responded. Veterinarians reported that 150,989 dogs were blood-tested for microfilariae and 869 dogs were found with heartworm. Another 65 dogs were amicrofilaremic but diagnosed with heartworm disease and one was found with heartworm at necropsy to give the total number diagnosed in 1986 as 935 (0.62%). Heartworm was reported from Manitoba, New Brunswick, Ontario and Quebec, but most (810) of the cases were from Ontario. South-western Ontario continued to be the primary focus of the infection in Canada. There were 103 cases reported from Quebec, mostly from and around Montreal, and 21 cases from Manitoba, from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 33% of the cases were observed with clinical signs of heartworm disease and 81% had a history of not having left Canada. 相似文献
20.
In late December 1983, 2 800 veterinarians across Canada were sent a questionnaire in order to assess the status of heartworm disease in Canada in 1983 and 26% of them responded. Veterinarians reported that 59 504 dogs were blood-tested to check for microfilariae and 771 dogs (1.30% of those tested) were found with Dirofilaria immitis. Heartworm disease was diagnosed in all provinces except New Brunswick and Newfoundland but most (733) of the cases were in Ontario. Heartworm disease was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 31% of the cases were observed with clinical signs of heartworm disease and 64% had a history of not having left Canada. Southwestern Ontario continues to be the focus of the infection and most of the dogs there had not left the province previously. 相似文献
|
