哺乳动物子宫内膜腺的发育与调控

哺乳动物的子宫内膜腺可合成和分泌或转运一些蛋白及相关物质 ,这些物质在胎儿存活、发育、妊娠识别信号的启动及胚胎着床等方面起重要的作用。子宫内膜腺的发育包括内膜上皮出芽形成内膜腺上皮、内膜腺上皮管穿过固有层及内膜腺上皮卷曲和分支等几个连续的过程。哺乳动物子宫内膜腺的形态发生受许多因素的调控 ,但确切的调控机理目前尚不完全清楚     

互助县山羊唾液中五种无机离子浓度的测定

对互助县30只山羊的唾液钠、钾、钙、磷、氯五种无机离子浓度进行了测定。结果:唾液钠为120.0±23.5mmolL,唾液钾为14.95±5.07mmolL,唾液钙为2.32±0.02mmolL,唾液无机磷为1.55±0.44mmolL,唾液氯为113.3±2.1mmolL,唾液钠钾比为8.7±2.3,唾液钙磷比为1.5±1.0。     

大白母猪发情期前后唾液蛋白组学分析

为解决养猪生产中传统发情鉴定法工作量大、准确率低等问题,本研究以经产大白母猪为研究对象,将发情周期分为发情前3天(PE),发情期(E)和发情后3天(AE)3个阶段,分别收集口腔中唾液,提取唾液蛋白,使用Lable-free定量蛋白组学技术对3个阶段的唾液蛋白组进行质谱检测,并通过蛋白质组学定性定量软件Maxquant进...     

Carcinoma of the submandibular salivary glands with multiple metastases in a cat

A 9-year-old neutered male domestic shorthair cat was presented because of coughing, dysphagia, and prostration. Examination revealed firm bilateral anterocervical swellings extensively adhered to the surrounding tissues. Anisocoria with left-side miosis was also evident. X-ray and ultrasound examinations along with a fine-needle aspiration biopsy were performed. Slides were stained with May-Grünwald Giemsa, and a diagnosis of salivary gland carcinoma was made. At surgery, the tumor was found to involve both submandibular salivary glands as well as adjacent lymph nodes and surrounding tissues. The cat was euthanized and necropsy was performed. The majority of tissues and organs examined histologically, including mandibular and retropharyngeal lymph nodes, soft palate, laryngopharynx and lungs, contained neoplastic cells whose appearance was consistent with adenocarcinoma. Bilateral salivary adenocarcinoma has not previously been reported in cats, and extensive metastases are rare.     

星斑川鲽仔稚鱼消化系统发育的组织学研究

使用石蜡切片技术对1-35日龄星斑川鲽的仔稚鱼消化系统进行组织学观察和研究。结果表明,星斑川鲽消化系统的发育主要分成三个阶段：从初孵到3日龄是卵黄阶段,其消化道为一细长的管道;从3日龄到5日龄是后卵黄阶段(混合营养阶段),卵黄被逐渐吸收,是卵黄阶段转向外源性营养阶段的过渡,消化道明显分化成口咽腔、食道、胃、前中肠、后肠和肛门,仔鱼消化系统具备了摄食和消化外源性食物的能力。此后,随着鱼体的生长,粘膜层的褶皱增加,消化道上皮细胞进一步分化,消化系统从功能和结构上逐步完善。16日龄,胃腺出现,标志着稚鱼期的开始,表明星斑川鲽是一种发育较快的鱼类。     

乳腺发育的研究进展

乳腺属于外分泌腺的一种,在雌性动物生殖周期中呈动态性变化。乳腺的发育可根据动物性别发育和繁殖时期的不同分为胚胎期、青春期前期、青春期、妊娠期、泌乳期和退化期。作者总结了上皮-基质(间质)之间相互作用对胚胎时期及出生后动物个体乳腺发育的影响,详细阐述了乳腺不同发育阶段不同种类激素所发挥的调控作用,并针对小鼠、人乳腺干细胞的发现及标记物进行简要描述。本综述旨在清晰、深入地揭示乳腺发育的基本过程及潜在的调控机理,为进一步了解乳腺相关方面的研究工作提供参考资料。     

INTRA‐ AND INTEROBSERVER VARIABILITY OF ULTRASONOGRAPHIC MEASUREMENTS OF THE ADRENAL GLANDS IN HEALTHY BEAGLES

The aim of the present study was to establish which adrenal gland measurement was characterized by the least variations. To do this, we quantified the variability of seven different size measurements of the canine adrenal gland (maximal length, maximal height at the cranial and caudal poles on longitudinal and transverse images, and maximal width of the cranial and caudal poles) within observer, between observer, and between dogs based on three different measurements made by each of the three observers in six healthy Beagle dogs. The height of the caudal pole of both adrenal glands measured on longitudinal images had the lowest intra‐ and interobserver variability, while measurements of the length had the highest intra‐ and interobserver variability. Other measurements that were characterized by low intra‐ and interobserver variability were: height and width of the caudal pole on transverse images and height of the cranial pole on longitudinal images only. These results provide a basis for further study of the changes in adrenal gland size in dogs with pituitary‐dependent hyperadrenocorticism.