Reproduction in the Female White-Striped Mastiff Bat, Tadarida australis (Gray) (Molossidae)

1982 ◽  
Vol 30 (1) ◽  
pp. 1 ◽  
Author(s):  
DJ Kitchener ◽  
CJ Hudson
Keyword(s):  
Reproductive Tract ◽  
Reproductive Organs ◽  
Uterine Horn ◽  
Museum Specimens ◽  
Histological Techniques ◽  
Lactating Females ◽  
Young Of The Year ◽  
The Right ◽  
Reproductive Phases

The reproductive cycle of female T, australis is outlined from examination of reproductive organs in situ and from histological techniques on museum specimens collected in Australia, south of latitude 22�S., over the last 88 years. Features of the reproductive tract and ovaries during important repro- ductive phases are described. There is a marked asymmetry of the reproductive organs, only the right ovary and uterine horn being functional. T. australis is monoestrous; there is no indication of marked differences in the timing of reproductive phases between regional populations. A single, deeply embed- ded corpus luteum occupies up to 60% of the ovary and degenerates at about the time of parturition. Apparently, most females, including young of the year, become pregnant each year, and give birth to a single young, usually between mid-December and late January, although occasionally as late as the end of February. Most young are weaned by early May. There is a short anoestrus, which is probably restricted to early lactating females, followed by a relatively long pro-oestrus. Copulation, ovulation and fertilization occur around late August. There is no evidence of hibernation.

Reproduction in female Chalinolobus morio (Gray) (Vespertilionidae) in South-Western Australia

1981 ◽  
Vol 29 (3) ◽  
pp. 305 ◽  
Author(s):  
DJ Kitchener ◽  
P Coster
Keyword(s):  
Reproductive Cycle ◽  
Western Australia ◽  
Reproductive Organs ◽  
Museum Specimens ◽  
Histological Techniques ◽  
The Right ◽  
Uterine Glands

The reproductive cycle of C. morio is outlined from examination of reproductive organs in situ and from histological techniques on Museum specimens collected in south-western Australia over the last 46 years. Changes in ovaries, endometria (and glands), epithelia lining tracts and Bartholin's glands are described. C. morio is monoestrous. It copulates in autumn and stores sperm in oviducts and uterine glands until ovulation in winter. Both ovaries are functional. Trans-uterine migration of the developing zygote is recorded. It normally gives birth to a single young, although occasionally to twins, between mid-September and mid-November. In the case of twins both uterine horns are gravid, otherwise only the right horn is gravid.

scholarly journals ANATOMI DAN GAMBARAN ULTRASOUND ORGAN REPRODUKSI SELAMA SIKLUS ESTRUS PADA KUDA GAYO BETINA (Anatomy and Ultrasound Imaging of Reproductive Organs of Gayo Mares During Estrous Cycle)

2016 ◽  
Vol 10 (2) ◽  
pp. 103-108
Author(s):  
Juli Melia ◽  
Muhammad Agil ◽  
Iman Supriatna ◽  
Amrozi Amrozi
Keyword(s):  
Estrous Cycle ◽  
Reproductive Tract ◽  
Reproductive Organs ◽  
The Other ◽  
Connective Tissues ◽  
Development Stages ◽  
Corpus Uteri ◽  
Histological Method ◽  
Hematoxylin And Eosin ◽  
The Right

The present study examines anatomy of Gayo mare reproductive organs. This study used three sample of Gayo mare reproductive organs (n= 3) for observation of morphology and morphometric of the mare reproductive organs. The ovarium was fixed in 4% paraformaldehyde solution then followed by histological method and stained using hematoxylin and eosin (HE) and Masson’s trichome (MT). Three mares were observed for diameter and changes overview of uterus during estrous cycle in real time using ultrasound. The results showed that, in general, the anatomy of Gayo mare’s reproductive organs was similar to other mares, but smaller in morphometry. The total length of the Gayo mare’s reproductive tract from labia to apex cornua was 48.00±1.00 cm. Weight of Gayo mare’s left ovary was 19.07±7.70 g and the right was 24.43±0.83 g. Histologically, there was no difference between Gayo mare’s structure and other mares. In cortex uteri there were some follicles surrounded by capillary, various development stages of follicles, healthy follicles, atretic follicle, and corpus albican; while in medulla there were a lot of connective tissues. Ultrasound of the uterus showed the change in diameter during estrous cycle with the largest diameter of corpus uteri was 4.43±0.10 cm in horses with estrous cycle of 21 days and 6.30±0.93 cm in horses with 24 days estrous cycle. In conclusion, the morphometry of Gayo mare reproductive organs are smaller than the other horses and there are differences in diameter of the uterus during the estrous cycle due to the changes of endometrium thickness.

Reproduction in female Eptesicus regulus (Thomas) (Vespertilionidae), in south-western Australia

1978 ◽  
Vol 26 (2) ◽  
pp. 257 ◽  
Author(s):  
DJ Kitchener ◽  
SA Halse
Keyword(s):  
Reproductive Cycle ◽  
Western Australia ◽  
Museum Specimens ◽  
Histological Techniques ◽  
The Right

The reproductive cycle of female Eptesicus regulus is outlined from histological techniques on museum specimens collected in south-western Australia over the last 15 years. E. regulus is monoestrous and gives birth to a single young in November or December. It copulates in autumn and stores sperm over winter. Ovulation and fertilization is at the end of winter. Both ovaries are functional but pregnancy occurs only in the right horn.

scholarly journals Glycodelin mRNA is expressed in the genital tract of male and female rats (Rattus norvegicus)

1999 ◽  
Vol 23 (1) ◽  
pp. 57-66 ◽  
Author(s):  
C Keil ◽  
B Husen ◽  
J Giebel ◽  
G Rune ◽  
R Walther
Keyword(s):  
Epithelial Cells ◽  
Reproductive Tract ◽  
In Situ Hybridisation ◽  
Physiological Role ◽  
Reproductive Organs ◽  
Female Rats ◽  
Male And Female Rats ◽  
First Time

In the present study we demonstrate for the first time the expression of glycodelin mRNA in the female and male genital tracts of rats using non-radioactive in situ hybridisation. Glycodelin fragment 1 (+41 to +141) shares 100% homology with the human gene sequence. In the ovary, glycodelin mRNA was restricted to granulosa cells. In the uterus, glycodelin mRNA was expressed in all epithelial cells of the endometrium. In the male reproductive tract, glycodelin mRNA was distributed in all epithelial cells of the epididymis, the prostate and the seminal vesicle. However, in the testis, glycodelin mRNA was predominantly found in spermatogonia and in spermatocytes of the seminiferous epithelium. The expression in several reproductive organs of rats offers an excellent tool to study further the physiological role of glycodelin, which is so far thought to act as an immunosuppressive factor.

Effects on differentiation of reproductive organs and sexual behaviour in Japanese quail by excessive embryonic ERα activation

2010 ◽  
Vol 22 (2) ◽  
pp. 416 ◽  
Author(s):  
Anna Mattsson ◽  
Björn Brunström
Keyword(s):  
Japanese Quail ◽  
Oestrogen Receptor ◽  
Reproductive Tract ◽  
Reproductive Organs ◽  
Positive Control ◽  
Reproductive Organ ◽  
Testis Size ◽  
Left Testis ◽  
The Right ◽  
Copulatory Behaviour

Exposure of Japanese quail (Coturnix japonica) embryos to oestrogenic substances disrupts sexual differentiation of the reproductive tract of both sexes and impairs the copulatory behaviour of the adult male. To examine whether these effects can be induced by selective activation of oestrogen receptor α (ERα), Japanese quail eggs were injected with various doses of the selective ERα agonist 16α-lactone-oestradiol (16α-LE2). The natural oestrogen 17β-oestradiol (E2) was used as a positive control. Both 16α-LE2 and E2 induced formation of an ovary-like cortex in the left testis (ovotestis) and reduced the size of the right testis in male embryos. The asymmetry in testis size remained in sexually mature males. Both substances induced retention and malformation of the Müllerian ducts in embryos of both sexes and malformed oviducts in juveniles. Male copulatory behaviour was suppressed by embryonic exposure to E2 and the highest dose of 16α-LE2. However, the lower dose of 16α-LE2, which markedly affected development of the reproductive organs, was without effects on behaviour. It can therefore not be excluded that the behavioural demasculinisation at the 100-fold higher dose involved cross-activation of oestrogen receptor β (ERβ). In conclusion, our results suggest that oestrogen-induced disruption of reproductive organ development in Japanese quail can be mediated via ERα, whereas the role of ERα in demasculinisation of copulatory behaviour remains to be clarified.

scholarly journals Distribution of hyaluronan in bull reproductive organs.

1994 ◽  
Vol 42 (11) ◽  
pp. 1479-1486 ◽  
Author(s):  
R Tammi ◽  
S Rönkkö ◽  
U M Agren ◽  
M Tammi
Keyword(s):  
Seminal Vesicle ◽  
Seminal Plasma ◽  
Reproductive Tract ◽  
Reproductive Organs ◽  
Accessory Gland ◽  
Seminiferous Tubules ◽  
Tissue Sections ◽  
Accessory Sex Glands ◽  
Cartilage Proteoglycan

To study the expression of hyaluronan in male reproductive organs and the origin of seminal plasma hyaluronan, we stained various parts of the bull reproductive tract for hyaluronan using a biotinylated probe derived from cartilage proteoglycan (bHABC). The potential loss of hyaluronan during tissue processing was checked with a novel technique by blotting frozen tissue sections on nitrocellulose and staining the blots with bHABC. In the same tissues the CD44 receptor was visualized by Hermes 1 antibody. The testes showed only traces of hyaluronan, whereas both the epithelium and the connective tissue of seminal vesicle, prostate, Cowper's gland, and epididymis were positive in bHABC staining. Hyaluronan was localized on the basolateral surfaces of these epithelial cells. The secretions inside the seminal vesicle and in the ducts of prostate and Cowper's gland were HA-positive, whereas the luminal contents of seminiferous tubules and epididymis were unstained both in paraffin sections and in the in situ blocks. The data indicate that hyaluronan in seminal plasma originates from the accessory sex glands. The co-localization of CD44 with hyaluronan in the basolateral surfaces of the accessory gland epithelia and its absence from other epithelia with little or no hyaluronan supports its role as a hyaluronan receptor.

scholarly journals Morphometrical study of the reproductive tract in Boran (Bos indicus) heifers in Ethiopia

2021 ◽  
Vol 25 (2) ◽  
pp. 1-13
Author(s):  
Sayid Ali ◽  
Tamrat Degefa ◽  
Alemayehu Lemma
Keyword(s):  
Reproductive Tract ◽  
Bos Indicus ◽  
Cattle Breed ◽  
Reproductive Organs ◽  
Reproductive Organ ◽  
Study Data ◽  
Ovarian Size ◽  
Reproductive Anatomy ◽  
The Mean ◽  
The Right

Boran breed is the most suitable type of cattle breed for arid and semi-arid regions of Ethiopia due to their adaptive characteristics.  Understanding their reproductive anatomy is important for successful reproductive management and has many implications for the application of assisted reproductive technology, and interpretation of physiological changes at different stages of their reproductive cycle. In this study, data of the anatomical structures of the reproductive organs of 20 Boran heifers were measured and characterized at  different stages of reproduction. The mean (±SE) length (L) of the vagina, cervix, and body of uterus were 13.17±2.98 cm, 7.19±1.28 cm, and 6.70±1.08cm, respectively. The mean (±SE) length of the right uterine horn and oviduct was 18.47 ±2.54 and 18.17 ±1.27cm, respectively  and that of the left were 18.05±2.73 and 17.45±1.80 cm, respectively. The mean ±SE weight (W) of right and left ovaries were 2.44±1.51 gm and 2.44±1.51 gm, respectively. The mean ±SE Length x Width x Thickness of the right ovary was 2.10±0.59 x 1.75±0.35 x 0.83±0.36 and that of the left was 1.97±0.41 x 1.58±0.29 x 0.67±0.33 cm. The mean (±SE) weight of the whole reproductive organ (without the vulva) was 301.35±66.34gm. The ovarian size was influenced by the presence of the corpus luteum(CL) usually larger with its presence.

Metabolism of ethanol to acetaldehyde by rat uterine horn subcellular fractions

2011 ◽  
Vol 30 (11) ◽  
pp. 1785-1794 ◽  
Author(s):  
Lara R Buthet ◽  
Florencia M Bietto ◽  
José A Castro ◽  
Gerardo D Castro
Keyword(s):  
Aldehyde Dehydrogenase ◽  
Alcohol Intake ◽  
Nordihydroguaiaretic Acid ◽  
Reproductive Organs ◽  
Ethanol Exposure ◽  
Uterine Horn ◽  
Endocrine Disturbances ◽  
Enzymatic Nature ◽  
Aldehyde Dehydrogenase Activity

Controversial studies from others suggested that alcohol intake could be associated with some deleterious effects in the uterus. Not all the effects of alcohol drinking on female reproductive organs can be explained in terms of endocrine disturbances. Deleterious effect of alcohol or its metabolites in situ could also play a role. Accordingly, we found a metabolism of alcohol to acetaldehyde in the rat uterine horn tissue cytosolic fraction mediated by xanthine oxidoreductase, requiring a purine cosubstrate and inhibited by allopurinol. This activity was detected by histochemistry in the epithelium and aldehyde dehydrogenase activity was detected in the muscular layer and in the serosa. There was a microsomal process, not requiring NADPH and of enzymatic nature, oxygen-dependent and inhibited by diethyldithiocarbamate, diphenyleneiodonium and partially sensitive to esculetin and nordihydroguaiaretic acid. The presence of metabolic pathways in the uterine horn able to generate acetaldehyde, accompanied by a low capacity to destroy it through aldehyde dehydrogenase, led to acetaldehyde accumulation in the uterus during ethanol exposure. Results suggest that any acetaldehyde produced in situ or arriving to the uterine horn via blood would remain in this organ sufficiently to have the opportunity to react with critical molecules to cause deleterious effects.

scholarly journals Torsión uterina e hidrometra unilateral en una coneja (Oryctolagus cuniculus) de compañía

2019 ◽  
Vol 5 ◽  
Author(s):  
Elizabeth Morales-Salinas ◽  
Fabiola Preza-Romero ◽  
Mónica Denise Quintal-Parra ◽  
Juan Cortés García
Keyword(s):  
Oryctolagus Cuniculus ◽  
Reproductive Tract ◽  
Uterine Horn ◽  
Abdominal Distention ◽  
Histopathological Diagnosis ◽  
Female Rabbit ◽  
Uterine Torsion ◽  
Normochromic Anemia ◽  
The Right ◽  
Uterine Adenocarcinoma

Descripción del caso. Coneja de compañía (Oryctolagus cuniculus) de cinco años de edad, de raza palomino, nulípara, que dejó de comer y beber gradualmente, y estaba apática.Hallazgos clínicos. Tenía el abdomen notablemente distendido, con peloteo y dolor a la palpación, estaba deshidratada y deprimida. El hemograma y la bioquímica sanguínea indicaron anemia severa altamente regenerativa normocrómica, hiperazotemia prerrenal, hipoproteinemia e hipoalbuminemia. En el ultrasonido y estudio radiográfico, se observó que el útero estaba muy dilatado con abundante líquido, lo que sugería hidrometra, o bien, hemometra.Tratamiento y evolución. Durante su hospitalización fue medicada con enrofloxacina, tramadol y meloxicam. Al realizar la ovariohisterectomía, se observó que el cuerno uterino derecho estaba torcido por completo con abundante líquido sanguinolento. Se diagnosticó torsión uterina e hidrometra unilateral derecha. La coneja murió un día después de la cirugía.Pruebas de laboratorio. En el examen histológico, el endometrio estaba muy hemorrágico y necrosado con pérdida de la mucosa y de las glándulas endometriales, con marcada congestión y edema en todas las capas uterinas. El diagnóstico histopatológico del útero fue emitido como hemorragia y necrosis endometrial grave, difusa y edema transmural grave difuso.Relevancia clínica. Las enfermedades del tracto reproductor en conejas de edad avanzada y no esterilizadas como el adenocarcinoma uterino y la hiperplasia endometrial son comunes. Estas patologías pueden acompañarse de hidrometra y hemometra afectando a ambos cuernos uterinos. El hallazgo relevante en este caso es que la torsión y la hidrometra de un solo cuerno uterino se presentaron juntas, quizá estaban relacionadas, lo que se ha documentado poco. Las patologías uterinas en conejas se pueden prevenir con ovariohisterectomía a edad temprana. Cuando una coneja presenta distención abdominal, además de considerar patologías uterinas como en este caso, se debe descartar enfermedad cardiaca, renal o alguna neoplasia abdominal. Abstract Case description. A five years old, palomino breed, nulliparous, pet female rabbit (Oryctolagus cuniculus), which gradually stop eating and drinking and was apathetic.Clinical findings and interpretation. Physical examination revealed prominent abdominal distention, pain and puddle sing on abdominal palpation and depression. Hematological and chemistry values revealed severe strongly regenerative normochromic anemia, prerenal azotemia, hypoproteinemia, and hypoalbuminemia. The ultrasound and radiographic study revealed that the uterus was extremely dilated with abundant fluid suggesting hydrometra or hemometra.Treatment and evolution. The rabbit during her hospitalization was treated with enrofloxacin, tramadol and meloxicam. At ovariohysterectomy, it was observed that the right uterine horn was completely twisted and approximately 800 mL of bloody fluid were collected from inside it. Unilateral uterine torsion and hydrometra were diagnosed. The rabbit died one day after surgery.Laboratory tests. Histologically, the endometrium was severely hemorrhagic and necrotic with loss of the uterine epithelium and endometrial glands, in addition there was marked congestion and edema in all the uterine layers. The histopathological diagnosis of the uterus was emitted as severe diffuse hemorrhage and necrosis endometrial and severe diffuse transmural edema.Clinical relevance. Reproductive tract diseases in unsterilized mature age rabbits such as uterine adenocarcinoma and endometrial hyperplasia are common. These abnormalities can be accompanied by hydrometra and hemometra affecting both uterine horns. As a relevant finding in this case is that the torsion and hydrometra of a single uterine horn were presented together and there may be a relationship between them which has been slight referenced. Uterine pathologies in rabbits can be prevented by performing ovariohysterectomy in young animals. When a female rabbit presents abdominal distention, in addition to considering uterine abnormalities as in this case, heart or kidney disease or some abdominal neoplasm should be included in the differential diagnosis.Keywords: uterus, pseudopregnancy, surgery, lagomorph, pathology.

Surface ultrastructure of danazol treated rat endometrium: A SEM study

1983 ◽  
Vol 41 ◽  
pp. 556-557
Author(s):  
R.P. Apkarian ◽  
J.S. Sanfilippo
Keyword(s):  
Cross Sections ◽  
Reproductive Tract ◽  
Preliminary Investigation ◽  
Breast Disease ◽  
Distal Segment ◽  
Uterine Horn ◽  
Female Reproductive Tract ◽  
Ultrastructural Changes ◽  
Cycle Phase ◽  
Sprague Dawley

The synthetic androgen danazol, is an isoxazol derivative of ethisterone. It is utilized in the treatment of endometriosis, fibrocystic breast disease, and has a potential use as a contraceptive. A study was designed to evaluate the ultrastructural changes associated with danazol therapy in a rat model. The preliminary investigation of the distal segment of the rat uterine horn was undertaken as part of a larger study intended to elucidate the effects of danazol on the female reproductive tract.Cross-sections (2-3 mm in length) of the distal segment of the uterine horn from sixteen Sprague-Dawley rats were prepared for SEM. Ten rats in estrus served as controls and six danazol treated rats were noted to have alterations of the estrus cycle i.e. a lag in cycle phase or noncycling patterns. Specimens were fixed in 3% glutaraldehyde in 0.05M phosphate buffer containing CaCl2 at pH 7.0-7.4 and chilled to 4°C. After a brief wash in distilled water, specimens were passed through a graded series of ethanol, critical point dryed in CO2 from absolute ethanol, and coated with 6nm Au. Observations were made with an IS1-40 SEM operated at 15kV.

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