检索结果-南通市图书馆

A review of the amino acid metabolism in placental function response to fetal loss and low birth weight in pigs

Journal of Animal Science and Biotechnology 2022年第4期13卷 987-998页

作者： Chengquan Tan Zihao Huang Wenyu Xiong Hongxuan Ye Jinping Deng Yulong Yin Guangdong Provincial Key Laboratory of Animal Nutrition Control National Engineering Research Center for Breeding Swine IndustryInstitute of Subtropical Animal Nutrition and FeedCollege of Animal ScienceSouth China Agricultural UniversityGuangzhou 510642GuangdongChina National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production Institute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125HunanChina

The fertility of sows mainly depends on the embryo losses during gestation and the survival rate of the postfarrowing *** selection of highly-prolific sows has been mainly focused on the selection of genotypes with high ovulatory ***,in the early-and post-implantation stages,the rate of embryo losses was increased with the increase of *** the various factors,placental growth and development is the vital determinant for fetal survival,growth,and *** the potential survival of fetuses with deficient placental development,their life-conditions and growth can be damaged by a process termed intrauterine growth retardation(IUGR).The newborn piglets affected by IUGR are prone to increased morbidity and mortality rates;meanwhile,the growth,health and welfare of the surviving piglets will remain hampered by these conditions,with a tendency to exacerbate with *** amino acids such as glycine,proline,and arginine continue to increase with the development of placenta,which are not only essential to placental growth(including vascular growth)and development,but can also be used as substrates for the production of glutathione,polyamines and nitric oxide to benefit placental function in many ***,the exact regulation mechanism of these amino acids in placental function has not yet been *** this review,we provide evidence from literature and our own work for the role and mechanism of dietary functional amino acids during pregnancy in regulating the placental functional response to fetal loss and birth weight of *** review will provide novel insights into the response of nutritionally nonessential amino acids(glycine and proline)to placental development as well as feasible strategies to enhance the fertility of sows.

关键词： Amino acids Birth weight fetal loss Pigs Placenta

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

An alternative model for fetal loss disorders associated with mare reproductive loss syndrome

引用

Animal Nutrition 2020年第2期6卷 217-224页

作者： Thomas W.Swerczek Department of Veterinary Science University of KentuckyLexingtonKY40356United States

Fertile chicken eggs were used as an alternative model for large animals to evaluate suspect toxic dietary ingredients for fetal loss disorders associated with mare reproductive loss syndrome(MRLS) and fetal losses in other ***,ammonia,and sulfate may react with proteinaceous compounds to enable the formation of abiotic pathogenic nanoparticles which were constant findings in pathognomonic placental lesions associated with non-infectious fetal losses of previously unknown etiology in mares,chickens and other *** pathogenic nanoparticles may be produced naturally by toxic elements associated with air pollution that affect pasture forages or crops,uninte ntionally by reactions of these elements in protein-mineral mixes in dietary rations,or endogenously within tissues of fetuses and adult *** nanoparticles may form niduses in small vessels and predispose animals to a host of secondary opportunistic diseases affecting the reproductive,respiratory and gastrointestinal tracts of *** newly recognized abiotic pathogenic micro and nanoparticles are associated with *** discovery of the pathogenic nanoparticles led to the identification of nitrate,ammonium,and sulfur,in the form of sulfate,that seemingly enable the formation of the pathogenic nanoparticles in embryonic and fetal tissues.

关键词： fetal loss High-protein diet Nitrate toxicity Sulfate toxicity Sulfur-oxidizing bacteria Pathogenic nanoparticle

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

MOSAICISM CONFINED TO PLACENTA IN PREGNANCIES WITH ADVERSE OUTCOME

引用

Chinese Medical Sciences Journal 1995年第1期10卷 45-49页

作者：向阳 KarinSundberg BjarneBeck 孙念怙 DepartmentofObstetricsandGynecology PekingUnionMedicalCollegeHospitalBeijing100730 DepartmentofObstetricsandGynecology UniversityHospi-talofCopenhagenDenmark DepartmentofObstetricsandGynecology PekingUnionMedicalCollegeHospitalBeijing100730

Chorionic villi and fetal tissues from 50 pathological human conceptions at gestational weeks 9-40 were cultured and cytogenetically analyzed to explore the existence of chromosomal mosaicism confined to the extraembryonic tissues and to clarify the relationship between confined placental mosaicism and adverse outcome of pregnancy. Chorionic villi and fetal tissues from 12 second trimester gestations terminated for social reasons served as a control group. In two pathological gestations, true mosaicism was found exclusively in chorionic cells and could not be confirmed in cells derived from the fetal tissues. One of these was severely growth retarded. Concordant results were obtained in all other cases.

关键词： Confined placental mosaicism fetal loss chorionic villi

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：