检索结果-南通市图书馆

Oligodendroglial heterogeneity in health,disease,and recovery:deeper insights into myelin dynamics

Neural Regeneration Research 2025年第11期20卷 3179-3192页

作者： Pieter-Jan Serneels Julie D.De Schutter Lies De Groef Lieve Moons Steven Bergmans KU Leuven Leuven Brain InstituteDepartment of BiologyAnimal Physiology and Neurobiology DivisionNeural Circuit Development&Regeneration Research GroupLeuvenBelgium KU Leuven Leuven Brain InstituteDepartment of BiologyAnimal Physiology and Neurobiology DivisionCellular Communication&Neurodegeneration Research GroupLeuvenBelgium

Decades of research asserted that the oligodendroglial lineage comprises two cell types:oligodendrocyte precursor cells and ***,recent studies employing single-cell RNA sequencing techniques have uncovered novel cell states,prompting a revision of the existing *** forward,the oligodendroglial lineage should be delineated into five distinct cell states:oligodendrocyte precursor cells,committed oligodendrocyte precursor cells,newly formed oligodendrocytes,myelin-forming oligodendrocytes,and mature *** new classification system enables a deeper understanding of the oligodendroglia in both physiological and pathological *** this uniform terminology will facilitate comparison and integration of data across ***,including the consolidation of findings from various demyelinating models,is essential to better understand the pathogenesis of demyelinating ***,comparing injury models across species with varying regenerative capacities can provide insights that may lead to new therapeutic strategies to overcome remyelination ***,by standardizing terminology and synthesizing data from diverse studies across different animal models,we can enhance our understanding of myelin pathology in central nervous system disorders such as multiple sclerosis,Alzheimer's disease,and amyotrophic lateral sclerosis,all of which involve oligodendroglial and myelin dysfunction.

关键词： animal models demyelination fish mammals multiple sclerosis myelin neurodegeneration oligodendrocytes oligodendroglial lineage remyelination

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

Anti-Saccharomyces cerevisiae antibody titers are stable over time in Crohn's patients and are not inducible in murine models of colitis

引用

World Journal of Gastroenterology 2005年第44期11卷 6988-6994页

作者： Stefan Müller Maya Styner Beatrice Seibold-Schmid Beatrice Flogerzi Michael M(a|¨)hler Astrid Konrad Frank Seibold division of Gastroenterology central animal Facility and Institute for Laboratory animal Science

AIM： To investigate ASCA production over time in CD and murine colitis in order to further our understanding of their etiology. MATERIALS AND METHODS： Sixty-six CD patients were compared to ulcerative colitis （UC） and irritable bowel syndrome patients with respect to ASCA production as measured by ELISA. ASCA IgG or IgA positivity as well as change in titers over a period of up to 3 years （△tgG/A） was correlated with clinical parameters such as CD activity index （CDM） and C-reactive protein levels （CRP）. Moreover, two murine models of colitis （DSS and IL-10 knock out） were compared to control animals with respect to ASCA titers after oral yeast exposure. RESULTS： ASCA IgG and IgA titers are stable over time in CD and non-CD patients. Fistular disease was associated with a higher rate of ASCA IgA positivity （P = 0.014）. Ileal disease was found to have a significant influence on the △tgG of ASCA （P = 0.032）. There was no correlation found between ASCA positivity or △tgG/A and clinical parameters of CD： CDAI and CRP. In mice, neither healthy animals nor animals with DSS-induced or spontaneous colitis exhibited a marked increase in ASCA titers after high-dose yeast exposure. On the other hand, mice immunized intraperitoneally with mannan plus adjuvant showed a marked and significant increase in ASCA titers compared to adjuvant-only immunized controls （P = 0.014）. CONCLUSION： The propensity to produce ASCA in a subgroup of CD patients is largely genetically predetermined as evidenced by their stability and lack of correlation with clinical disease activity parameters. Furthermore, in animal models of colitis, mere oral exposure of mice to yeast does not lead to the induction of marked ASCA titers irrespective of concomitant colonic inflammation. Hence, environment may play only a minor role in inducing ASCA.

关键词： Crohn's disease Anti-Saccharomyces cerevisiae antibodies Colitis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Induced pluripotent stem cells: Mechanisms, achievements and perspectives in farm animals

引用

World Journal of Stem Cells 2015年第2期7卷 315-328页

作者： Dharmendra Kumar Thirumala R Talluri Taruna Anand Wilfried A Kues Institute of Farm animal Genetics Friedrich-Loeffler-Institute animal Physiology and Reproduction division Central Institute for Research on Buffaloes National Research Centre on Equines

Pluripotent stem cells are unspecialized cells withunlimited self-renewal, and they can be triggered to differentiate into desired specialized cell types. These features provide the basis for an unlimited cell source for innovative cell therapies. Pluripotent cells also allow to study developmental pathways, and to employ them or their differentiated cell derivatives in pharmaceutical testing and biotechnological applications. Via blastocyst complementation, pluripotent cells are a favoured tool for the generation of genetically modified mice. The recently established technology to generate an induced pluripotency status by ectopic co-expression of the transcription factors Oct4, Sox2, Klf4 and c-Myc allows to extending these applications to farm animal species, for which the derivation of genuine embryonic stem cells was not successful so far. Most induced pluripotent stem(i PS) cells are generated by retroviral or lentiviral transduction of reprogramming factors. Multiple viral integrations into the genome may cause insertional mutagenesis and may increase the risk of tumour formation. Non-integration methods have been reported to overcome the safety concerns associated with retro and lentiviral-derived i PS cells, such as transient expression of the reprogramming factors using episomal plasmids, and direct delivery of reprogramming m RNAs or proteins. In this review, we focus on the mechanisms of cellular reprogramming and current methods used to induce pluripotency. We also highlight problems associated with the generation of i PS cells. An increased understanding of the fundamental mechanisms underlying pluripotency and refining the methodology of i PS cell generation will have a profound impact on future development and application in regenerative medicine and reproductive biotechnology of farm animals.

关键词： Reprogramming Large animal models Stemness Chimera Germline transmission Inducedpluripotent stem cells Gene delivery

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Biochemical and histopathological changes in sheep fed different detoxified karanj(Pongamia glabra)seed cake as partial protein supplements

引用

animal Nutrition 2017年第2期3卷 164-170页

作者： Nira M.Soren Anil K.Sharma Vadali R.B.Sastry division of animal Nutrition ICAR-Indian Veterinary Research Institute animal Nutrition division ICAR-National Institute of Animal Nutrition and Physiology division of Pathology ICAR-Indian Veterinary Research Institute

The study investigated the long-term effect of feeding processed solvent extracted karanj(Pongamia glabra) cake(SKC) on gross pathology and histopathological changes in some vital organs, and on the activities of serum enzymes in Jalauni lambs. Twenty-four male lambs were divided into 4 groups and allotted randomly to a soybean meal(SBM) based control(CON) and 3 treatment groups receiving concentrate mixtures, containing water washed(WW), 2.5% lime(LM) and 0.4% binder(BN) treated SKC replacing 50% nitrogen of SBM to meet the protein requirements. Blood was collected after 150 days from all the lambs and serum activities of aspartate aminotransferase(AST), alanine aminotransferase(ALT)and lactate dehydrogenase(LDH) were assayed. All lambs were sacrificed after 196 days, and vital organs screened for gross pathological lesions. The representative tissues of liver, intestine, parathyroid gland,testis, and epididymis were sampled, preserved in 10% formalin and processed to examine histopathological changes by staining with haematoxylin and eosin(HE). The serum enzyme activities of AST and ALT were similar in the treatments, but the activity of LDH was higher(P < 0.01) in processed SKC-fed groups than the control. The weight and size of the liver were decreased in BN group, while those of testes were decreased in both LM and BN groups. The histological sections of the testes and epididymis of lambs from LM group showed hypoplastic seminiferous tubules and empty ductules, respectively. The histological sections of the parathyroid gland in the same diet revealed smaller and non-secretory chief cells. The small intestine of lambs from BN group showed infiltration of mononuclear cells(MNC) in lamina propria with mild fibroplasia in intervillous areas. The histological section of liver from this group showed MNC infiltration in portal areas. The inclusion of water washed SKC in the concentrate mixture of lambs did not show gross pathological and histological alterations in th

关键词： Karanj cake Enzymatic profile Histopathology Lambs Liver Testis

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

Growth performance, and enteric and manure greenhouse gas emissions from Murrah calves fed diets with different forage to concentrate ratios

引用

animal Nutrition 2018年第2期4卷 215-221页

作者： Vinu M.Nampoothiri Madhu Mohini Bilal A.Malla Goutam Mondal Sujata PANDita division of animal Nutrition ICAR-National Dairy Research Institute division of animal Physiology ICAR-National Dairy Research Institute

The present study investigated the effects of different dietary forage to concentrate ratios on animal performance, and enteric and manure greenhouse gas emissions in growing *** male Murrah calves(153.5 ± 18.17 kg; 6 to 12 months) were randomly assigned to 3 dietary treatments and fed corn fodder, wheat straw and concentrate in 3 different proportions: 20:60:20(C20); 20:40:40(C40) and 10:30:60(C60), for a period of 120 *** dietary concentrate proportion had no significant(P > 0.05) effect on dry matter intake(DMI) but increased crude protein(CP) and total digestible nutrient intake(P 0.05).The apparent digestibility of dry matter, organic matter and CP were higher(P 0.05).Daily methane(CH_4) emission(g/d), CH_4 energy loss(MJ/d) and CH_4 yield(CH_4 g/kg organic matter intake [OMI], CH_4 g/kg digestible OMI, and CH_4% of metabolizable energy intake) were significantly higher for C20 compared with C60(P 0.05).Manure CH_4(g/kg DMI) and nitrous oxide(N_2O mg/kg nitrogen) emissions were not affected(P > 0.05), but N_2O emission on mg/kg DM basis was significantly higher(P animal performance, and reduced enteric CH_4 emission(g/day) without any significant effect on manure N_2O(mg/kg nitrogen) and CH_4 emissions.

关键词： Concentrate proportion Growth Digestibility Manure Methane Nitrous oxide

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

Cocktails of defined chemical compounds:sufficient to induce totipotency in embryonic stem cells

引用

Signal Transduction and Targeted Therapy 2022年第10期7卷 3630-3631页

作者： Wilfried A.Kues Dharmendra Kumar Friedrich-Loeffler-Institut Federal Research Institute for Animal HealthBiotechnologyStem Cell Physiology31535 NeustadtGermany animal Physiology and Reproduction division ICAR-Central Institute for Research on BuffaloesHisarHaryana 125001India

In a recent work published in Nature,Hu et al.1 report that a cocktail of three small chemicals is sufficient to induce totipotency in murine embryonic stem(ES)*** this year,two other groups identified different mixtures of chemicals,which also seem to do this job,2,3 taken together this opens a new approach to capture totipotency in vitro,and to understand the underlying pathways and their interaction.

关键词： interaction. al. induce

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Low density lipoprotein in cryopreservation of semen

引用

Asian pacific Journal of Reproduction 2018年第3期7卷 103-116页

作者： P.Perumal division of animal Science ICAR-Central Island Agricultural Research InstitutePort BlairAndaman and Nicobar Islands-744 101India

Artificial insemination made a predominant contribution towards the improvement of genetic potential and increased productivity in animal husbandry sectors. In frozen semen technology, about 50% of sperm died because of cryoinjury or cryodamage during the process of cryopreservation and thawing of the semen. These cryo-damages can be minimized by use of various cryoprotective agents or cold shock absorbers in the frozen semen technology. Of which, egg yolk (EY) is most primarily important in the extender preparation for various mammalian species for longer period and it works against the cold shock during the cryopreservation process due to the presence of low density lipoproteins (LDL). Further, EY contains substances other than LDL that affect the sperm quality parameters especially reduced motility and inhibit the respiration of sperm;therefore, there was heavy demand on replacement of the EY with the particular responsible substances (LDL) in the semen extender. Later on, various investigators tried to extract the LDL from the EY of hen and finally succeeded to extract the LDL from the EY of hen for semen preservation of various species. The concentration of LDL used in various species is varied and this may be due to the composition and concentration of phospholipids, cholesterol and its proportion in the sperm membrane. In bovine species, the concentration of LDL was standardized as 8% (w/v) on dry matter basis. This is equal to 20% EY used in conventional semen extender. As it is explained that the 20% EY contains 68% LDL (13.6 g) and on dry matter basis, it is approximately 60% (8.16 g). This calculation indicates 20% EY contains 8% LDL on dry matter basis. The LDL protects the sperm by various mechanisms to maintain the integrity of sperm membrane, which is explained in the present review. It was concluded that the investigation is still to be carried out to find out the exact roles of apoproteins and lipids of LDL and to indentify and isolate the detriment

关键词： Low density lipoprotein Cryopreservation Semen Egg yolk Action mechanism

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Gene expression of CCL8 and CXCL10 in peripheral blood leukocytes during early pregnancy in cows

引用

Journal of animal Science and Biotechnology 2018年第4期9卷 813-823页

作者： Ryosuke Sakumoto Kosuke Iga Ken-Go Hayashi Shiori Fujii Hiroko Kanahara Misa Hosoe Tadashi Furusawa division of animal Breeding and Reproduction Research Institute of Livestock and Grassland Science National Agriculture and Food Research Organization (NARO) division of Livestock and Forage Research Tohoku Agricultural Research CenterNARO division of animal Sciences Institute of Agrobiological SciencesNARO

Background: The aim of the present study was to evaluate CCL8 and CXCL10 expression and its regulatory mechanism in peripheral blood leukocytes(PBLs) at the time of maternal recognition in cows. Blood samples were collected on 14, 15, 16, 17 and 18 d after artificial insemination(AI). Based on the day of return of estrus, cows were divided into three groups, pregnant(n = 5), early embryonic mortality(EEM; n = 5) and late embryonic mortality(LEM; n = 5). The gene expression levels in PBLs were assessed with quantitative real-time reverse transcription ***: The expression of CCL8 and CXCL10 mRNA in PBLs gradually increased from 14 to 18 d of pregnant cows and significant differences were observed on 18 d(P < 0.05), whereas no significant changes were observed both in EEM and LEM cows. Interferon-stimulated protein 15 k Da(ISG15), myxovirus-resistance gene(MX) 1 and MX2 mRNA expression in PBLs increased from 14 to 18 d which was significant on 18 d of pregnant cows as well as in LEM cows(P < 0.05), but no changes were observed in EEM cows. To determine whether the expression of CCL8 and CXCL10 in PBLs was regulated by pregnancy-related substances or not, expression level was assessed after exposure to interferon-τ(IFNT) and CCL16. Monocytes, granulocytes and lymphocytes were obtained using density-gradient centrifugation and flow cytometry. The addition of IFNT(100 ng/mL) and CCL16(100 ng/mL) to cultured PBLs increased the expression of CCL8 and CXCL10 mRNA(P < 0.05). The expression of ISG15, MX1 and MX2 mRNA in PBLs was also stimulated by IFNT and CCL16(P < 0.05).Conclusions: The expression of CCL8 and CXCL10 genes increased in PBLs during early pregnancy. Since IFNT stimulated CCL8 and CXCL10 expression in cultured PBLs, the increase of CCL8 and CXCL10 might be pregnancy-dependent *** expression of both CCL8 and CXCL10 in PBLs was stimulated by CCL16 as wel as IFNT, suggesting a chemokine interaction that at least includes CCL8, CXCL10 and CCL16, and m

关键词： CCL8 Cow CXCL10 Leukocytes Pregnancy

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

Relative bioavailability of tribasic zinc sulfate for broilers fed a conventional corn-soybean meal diet

引用

Journal of Integrative Agriculture 2015年第10期14卷 2042-2049页

作者： LI Wen-xiang MA Xin-yan LU Lin ZHANG Li-yang LUO Xu-gang Mineral Nutrition Research division Institute of Animal Sciences Chinese Academy of Agricultural Sciences Institute of animal Science Guangdong Academy of Agricultural Sciences

An experiment was carried out to investigate the relative bioavailability of tribasic zinc（Zn） sulfate relative to Zn sulfate for broilers fed a conventional corn-soybean meal diet. A total of 504 1-d-old Arbor Acres commercial male chicks were randomly assigned by body weight of birds to one of seven treatments involving a 2×3 factorial arrangement with three levels of added Zn（30, 60, or 90 mg of Zn kg–1） and two Zn sources（tribasic Zn sulfate and Zn sulfate） plus a control with no added Zn for an experimental phase of 14 d. Plasma Zn, tibia ash Zn, pancreas Zn, and pancreas metallothionein（MT） messenger RNA（m RNA） were analyzed at 6 or 14 d of age post-hatching. The results showed that plasma Zn, tibia ash Zn, pancreas Zn, and pancreas MT m RNA increased linearly（P〈0.002） as dietary Zn concentration increased at 6 or 14 d of age. The R2 for a linear model was greater on d 6 than on d 14 for the above 4 responsive criteria, and among these indices, the fitting of the tibia ash Zn concentration was the best（R2=0.99）. Therefore, based on slope ratios from the multiple linear regressions of the above 4 indices of the birds at 6 d of age on daily intake of dietary Zn, the bioavailabilities of tribasic Zn sulfate relative to Zn sulfate（100%） were 95.6%（P=0.18）, 83.5%（P=0.01）, 87.9%（P=0.53）, and 75.9%（P=0.38） for the tibia ash Zn, pancreas Zn, plasma Zn, and pancreas MT m RNA, respectively. The results indicated that generally, Zn from tribasic Zn sulfate was as available as Zn from Zn sulfate for broilers.

关键词： tribasic zinc sulfate bioavailability Zn concentration MT gene expression broilers

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

Feeding of yeast(Candida spp.) improves in vitro ruminal fermentation of fibrous substrates

引用

Journal of Integrative Agriculture 2015年第3期14卷 514-519页

作者： Yoandra Marrero Yamicela Castillo Oscar Ruiz Eduviges Burrola Claudio Angulo Department of Physiology Animal Science Institute Multidisciplinary division Autonomous University of Juárez Faculty of animal Science and Ecology Autonomous University of Chihuahua

In vitro gas production technique（IVGPT） was used with the objective of determining the inclusion effect of live cells of two strains of Candida yeast on in vitro ruminal fermentation of two fibrous substrates. In order to achieve this, two experiments were performed： A） using oat straw（Avena sativa） as substrate; B） using alfalfa hay（Medicabo sativa） as substrate, comparing the effect of two different strains of Candida genre, both isolated from the rumen, on the mentioned substrates. Levica 25（Candida tropicalis） yeast belongs to the culture collection of the Institute of animal Science, Cuba, and Levazoot 15（Candida norvegensis） yeast is part of the collection of the Faculty of Zootechnology and Ecology of the Autonomous University of Chihuahua, Mexico. Both strains demonstrated their potential in activating the ruminal fermentation. They stimulated（P〈0.0001） the ruminal fermentation of the substrates under study. However, the Levazoot strain stimulated the dry matter（DM） fermentation of alfalfa in 21.43%, more than Levica 25. It is concluded that there is an influence of yeast strain and diet on the rumen environment and, therefore, it is important to select the appropriate strain in every production condition.

关键词： rumen yeast gas production fermentation product microbial additive

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

在线全文

在线全文

在线全文

在线全文

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

在线全文

在线全文

在线全文

在线全文

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：