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de Oliveira GB, de Araújo Júnior HN, Dos Santos Sousa R, Bezerra FVF, Dos Santos AC, de Moura CEB, Silva AR, de Oliveira Rocha HA, de Oliveira MF. Morphology of the genital organs of the female red-rumped agouti (Dasyprocta leporina, Linnaeus, 1758) during estrous cycle phases and in advanced pregnancy. J Morphol 2019; 280:1232-1245. [PMID: 31233245 DOI: 10.1002/jmor.21027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 05/27/2019] [Accepted: 06/06/2019] [Indexed: 11/11/2022]
Abstract
The study investigated the gross and microscopic anatomy of the genital organs of 20 agoutis at different stages of the estrous cycle and four in the final trimester of pregnancy. Specimens were euthanized and their reproductive organs were fixed in a 4% paraformaldehyde or 2.5% glutaraldehyde solution and submitted to routine histological techniques for light and scanning electron microscopy. In the ovary, during the proestrus phase, we observed developing follicles and corpus luteum (CL) in regression; during estrus, there were Graafian follicles; during metestrus, there was a hemorrhagic corpus, whereas in diestrus, there was a mature CL. The uterus was partially double because the cervix was cranially septate but caudally, the septum disappeared, forming a single ostium that opened into the vagina. Changes occurred along the estrous cycle in the uterine and vaginal epithelia, that is, an increase in the uterine epithelium height accompanied by an increase of thickness of the vaginal epithelium during the follicular phase and a decrease of thickness of both epithelia during the luteal phase. The endometrial lining was composed of a simple cuboidal epithelium to simple columnar epithelium with basal nuclei. The vaginal mucosa consisted of epithelium that varied from nonkeratinized stratified squamous (luteal phase) to keratinized stratified squamous (follicular phase). The clitoris was external to the vagina. It presented two protruding lateral keratinized spicules and a centralized urethra, with no common parts between the urinary and genital tracts. Anatomical and histological changes were observed mainly in the cervix, vagina and spicules of the clitoris during the EC.
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Affiliation(s)
| | | | - Rejane Dos Santos Sousa
- Department of Anatomy of Domestic and Wild Animals, School of Veterinary Medicine and Animal Sciences, Sao Paulo, Sao Paulo, Brazil
| | | | - Amilton Cesar Dos Santos
- Department of Anatomy of Domestic and Wild Animals, School of Veterinary Medicine and Animal Sciences, Sao Paulo, Sao Paulo, Brazil
| | | | - Alexandre Rodrigues Silva
- Department of Animal Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, State of Rio Grande do Norte, Brazil
| | - Hugo Alexandre de Oliveira Rocha
- Bioscience Center, Department of Biochemistry, Federal University of Rio Grande do Norte, Natal, State of Rio Grande do Norte, Brazil
| | - Moacir Franco de Oliveira
- Department of Animal Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, State of Rio Grande do Norte, Brazil
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Flamini MA, Barbeito CG, Portiansky EL. Morphological characteristics of the uterus and uterine cervix of the plains viscacha (
Lagostomus maximus
). ACTA ZOOL-STOCKHOLM 2019. [DOI: 10.1111/azo.12300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Mirta A. Flamini
- Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada, Facultad de Ciencias Veterinarias Universidad Nacional de La Plata La Plata Argentina
| | - Claudio G. Barbeito
- Laboratorio de Histología y Embriología Descriptiva, Experimental y Comparada, Facultad de Ciencias Veterinarias Universidad Nacional de La Plata La Plata Argentina
- Laboratorio de Análisis de Imágenes, Facultad de Ciencias Veterinarias Universidad Nacional de La Plata La Plata Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) La Plata Argentina
| | - Enrique L. Portiansky
- Laboratorio de Análisis de Imágenes, Facultad de Ciencias Veterinarias Universidad Nacional de La Plata La Plata Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) La Plata Argentina
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Özbek M, Ergün E, Beyaz F, Ergün L, Y Ld R M N, Özgenç Ö, Erhan F. Prenatal development and histochemical characteristics of gastrointestinal mucins in sheep fetuses. Microsc Res Tech 2018. [PMID: 29536591 DOI: 10.1002/jemt.23018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The object of this study was to describe the prenatal development and histochemical properties of mucins in the sheep gastrointestinal tract. To determine changes in the mucin profile, the sections were stained with specific histochemical stains for carbohydrates. While neutral and mixed mucins were observed in the superficial epithelial cells of the abomasal pyloric region, acidic mucins were detected in the secretory ducts and corpus of the glands. Acidic mucins consisted predominantly of sialomucins. In the duodenal villi, the number of goblet cells containing neutral mucins increased toward the end of gestation, whereas Brunner's glands contained acidic mucins until the 95th day of gestation and both acidic and neutral mucins thereafter. The jejunal goblet cells contained either acidic, neutral, or mixed mucins. Goblet cells containing acidic mucins, which were mainly localized to the ileal crypts and villi, mostly contained sulfated mucins. While villi were observed in the proximal colon until the 115th day of gestation, later the typical crypt structure emerged. During the period in which the villi were found in the proximal colon, the goblet cells containing sulphomucins were predominant, whereas the goblet cells containing sialomucins were predominant after the typical crypt structure was formed. In conclusion, gastrointestinal mucins may be involved in the formation of meconium during the prenatal period, and acidic mucins may contribute to the strength of the intestinal barrier against pathogens and digestive enzymes, as the barrier is not fully functional after birth.
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Affiliation(s)
- Mehmet Özbek
- Department of Histology and Embryology, Mehmet Akif Ersoy University, Burdur, Turkey
| | - Emel Ergün
- Department of Histology and Embryology, Ankara University, Ankara, Turkey
| | - Feyzullah Beyaz
- Department of Histology and Embryology, Erciyes University, Kayseri, Turkey
| | - Levent Ergün
- Department of Histology and Embryology, Ankara University, Ankara, Turkey
| | - Nuh Y Ld R M
- Department of Histology and Embryology, Ankara University, Ankara, Turkey
| | - Özge Özgenç
- Department of Histology and Embryology, Ankara University, Ankara, Turkey
| | - Füsun Erhan
- Department of Histology and Embryology, Cumhuriyet University, Sivas, Turkey
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Tano de la Hoz MF, Eyheramendy V, Felipe AE, Díaz AO. Comparative analysis of the morphology and histochemistry of the duodenum of the coypu (Myocastor coypus bonariensis) during its prenatal and postnatal development. Tissue Cell 2016; 48:18-24. [DOI: 10.1016/j.tice.2015.12.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 12/08/2015] [Indexed: 12/28/2022]
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Histology of the ovary of Chinchilla lanigera in captivity. Anim Reprod Sci 2014; 148:205-11. [DOI: 10.1016/j.anireprosci.2014.05.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 05/05/2014] [Accepted: 05/10/2014] [Indexed: 11/19/2022]
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Mayor P, Guimarães D, López C. Functional morphology of the genital organs in the wild paca (Cuniculus paca) female. Anim Reprod Sci 2013; 140:206-15. [DOI: 10.1016/j.anireprosci.2013.06.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Revised: 06/18/2013] [Accepted: 06/21/2013] [Indexed: 10/26/2022]
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Flamini MA, Barbeito CG, Portiansky EL. A morphological, morphometric and histochemical study of the oviduct in pregnant and non-pregnant females of the plains viscacha (Lagostomus maximus). ACTA ZOOL-STOCKHOLM 2012. [DOI: 10.1111/azo.12018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mirta A. Flamini
- Department of Histology and Embryology; School of Veterinary Sciences; National University of La Plata; P.O. Box 296 1900 La Plata Argentina
| | - Claudio G. Barbeito
- Department of Histology and Embryology; School of Veterinary Sciences; National University of La Plata; P.O. Box 296 1900 La Plata Argentina
- Institute of Pathology; School of Veterinary Sciences; National University of La Plata; P.O. Box 296 1900 La Plata Argentina
| | - Enrique L. Portiansky
- Institute of Pathology; School of Veterinary Sciences; National University of La Plata; P.O. Box 296 1900 La Plata Argentina
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Martins L, Biagioni M, Oliveira F, Toniollo G, Pacheco M, Machado M. Morfologia do útero de cutias nulíparas e não nulíparas. ARQ BRAS MED VET ZOO 2011. [DOI: 10.1590/s0102-09352011000200009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Descreveu-se a morfologia do útero de cutias nulíparas e não nulíparas por meio de ovariossalpingoisterectomia. A análise macroscópica do útero foi realizada in loco e na peça retirada. Segmentos das porções proximal, média e distal do órgão foram colhidas, fixadas e preparadas histologicamente, sendo as amostras analisadas à microscopia de luz, e realizada a histomorfometria das camadas uterinas. Topograficamente, o útero localiza-se na região sublombar, caudalmente aos rins, em continuação aos ovários e às tubas uterinas, estendendo-se até à entrada da pelve, onde se posiciona dorsalmente à bexiga. Caracteriza-se como do tipo duplo, embora culmine em apenas um óstio cervical externo. Microscopicamente, a mucosa uterina é formada por variações do epitélio, de cilíndrico a pseudoestratificado, que se apoia em tecido conjuntivo frouxo, onde se observam glândulas endometriais revestidas por epitélio cilíndrico, além da presença de vasos sanguíneos. A camada muscular subdivide-se em interna ou submucosa, média ou vascular e externa ou subserosa. A camada serosa é composta por tecido conjuntivo e mesotélio. Na histomorfometria, verificou-se que a espessura uterina total e a espessura da camada mucosa, em média, foram maiores nas fêmeas não nulíparas.
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Mayor P, Bodmer R, Lopez-Bejar M. Functional anatomy of the female genital organs of the wild black agouti (Dasyprocta fuliginosa) female in the Peruvian Amazon. Anim Reprod Sci 2011; 123:249-57. [DOI: 10.1016/j.anireprosci.2010.12.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Revised: 11/22/2010] [Accepted: 12/10/2010] [Indexed: 11/28/2022]
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Spina F, Courtalon P, Porini G, Fabián Bó R. Estimation of the birth season of Myocastor coypus (Molina 1782) by characterisation of prenatal developmental stages. MAMMALIA 2009. [DOI: 10.1515/mamm.2009.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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