The tissue distributions of the estrogen-inducible hen oviduct transferrin receptor and the chicken embryonic erythrocyte transferrin receptor were studied. Tissue sections were investigated by immunofluorescence microscopy using specific polyclonal antisera against each receptor. The receptor originally identified and characterized in the oviduct strongly stained liver and ovary; localized sta...

Spermatozoa are known to be stored within the female genital tract after mating in various species to optimize timing of reproductive events such as copulation, fertilization, and ovulation. The mechanism supporting long-term sperm storage is still unclear in turtles. The aim of this study was to investigate the interaction between the spermatozoa and oviduct in Chinese soft-shelled turtle by l...

PURPOSE Lesions in the endometrium are difficult to differentially diagnose. The present study examined whether oviduct-specific glycoprotein is differentially expressed in normal, hyperplastic, and malignant endometrium. EXPERIMENTAL DESIGN The expression of oviduct-specific glycoprotein was characterized by immunohistochemical methods with whole sections of endometrium from 90 women. An end...

The sperm reservoir is formed when spermatozoa bind to the epithelium of the uterotubal junction and caudal isthmus of the oviduct. It is an important mechanism that helps synchronize the meeting of gametes by regulating untimely capacitation and polyspermic fertilization. This study investigated the influence of epididymal maturation and caudal fluid on the ability of spermatozoa to bind to ov...

by investigators CALDEN, '42; BoRELL et al., '59; DEANE, '52; ODoR, 53; SCHAFFER, '08). In order to know the morphology and the function of the rat oviduct, it seems necessary to clarify in detail the oviductal segmentation from the basic point of cell types and their distribution. Segmentation may contribute to a deeper understanding of the structure and function of the rat oviduct. In the fir...

The contractile response of turtle oviduct smooth muscle to acetylcholine after 30 min of incubation of muscles in Ca-free, 4 mM ethylene (bis) oxyethylenenitrilotetraacetic acid (EGTA) solutions at room temperature was greater than the contractile response after 30 min of incubation in the Ca-free medium at 37 degrees C. Incubation in Ca-free solution at 37 degrees C before stimulation with ac...

CD9 is a tetraspan protein that associates with several beta1 integrins, including alpha6beta1. Because alpha6beta1 is present on murine eggs and interacts with the sperm-surface glycoprotein ADAM 2 (fertilin beta), we first asked whether CD9 is present on murine eggs and whether it functions in sperm-egg binding and fusion. CD9 is present on the plasma membrane of oocytes in the ovary as well ...

Developmentally inappropriate exposures to estrogenic compounds are known to alter morphology and function of the reproductive tract in various species. Chickens are continually exposed to the relatively potent estrogenic soy isoflavones through the diet. Previous experiments in this laboratory have demonstrated that the primary soy isoflavone genistein induces proliferation of the chick oviduc...

The macroanatomy, histology, and fine structure of the avian oviduct is reviewed and related to its role in fertile egg production. The avian oviduct functions as a biological assembly line, beginning sequentially with the deposition of the albumen around the fertilized or unfertilized ovum, then the shell membrane, and lastly, the shell, all within 25 hr of ovulation. While in transit through ...

The mechanisms regulating oviduct function were investigated. In Experiment 1, porcine oviductal secretory protein (pOSP) mRNA, and pOSP and insulin-like growth factor (IGF-I) in oviductal flushings, decreased through the peri-ovulatory period. In Experiment 2, higher plasma steroids in oviductal veins, ipsilateral (INT), rather than contralateral (OVX), to the remaining ovary in unilaterally o...