the time period immediately before estrus, characterized by the development of ovarian follicles and the uterine lining
proestrus in American English
(prouˈestrəs)
noun
the period immediately preceding estrus
Also: pro-oestrus
Word origin
[1920–25; pro-1 + estrus]This word is first recorded in the period 1920–25. Other words that entered Englishat around the same time include: audio, ski jump, slalom, superpower, zipperpro- is a prefix indicating favor for some party, system, idea, etc., without identitywith the group (pro-British; pro-Communist; proslavery), having anti- as its opposite
Examples of 'proestrus' in a sentence
proestrus
Growth hormone and insulin-like growth factor 1 diminished 60 and 20% respectively on proestrus morning.
Gamarra-Luques Carlos, Hapon María, Jahn Graciela A 2010, 'Short term hypothyroidism affects ovarian function in the cycling rat', Reproductive Biology and Endocrinologyhttp://www.rbej.com/content/8/1/14. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
No apoptotic cells were observed at proestrus.
Asselin Eric, Shooner Carl, Leblanc Valerie, Dery Marie-Claude 2003, 'Regulation of Akt expression and phosphorylation by 17β-estradiol in the rat uterusduring estrous cycle', Reproductive Biology and Endocrinologyhttp://www.RBEj.com/content/1/1/47. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Superficial cornified cells were present during proestrus and estrus.
Caroline Rocha de Oliveira Lima, Luiz Antônio Franco da Silva, Miguel Joaquim Dias,Gabriela Teixeira Borges, Maria Ivete Moura, Maria Lúcia Gambarini 2008, 'COLPOCITOLOGY AND SERUM CONCENTRATIONS OF PROGESTERONE IN NULIPAROUS GOATS SUBMMITEDTO ARTIFICIAL PHOTOPERIODS COLPOCITOLOGIA E CONCENTRAÇÕES SÉRICAS DE PROGESTERONAEM CABRAS NULÍPARAS SUBMETIDAS AO FOTOPERÍODO ARTIFICIAL', Ciência Animal Brasileirahttp://www.revistas.ufg.br/index.php/vet/article/view/447. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The values of estradiol were significantly higher in the proestrus-estrus stage.
R. Serakides, V.A Nunes, E.F. Nascimento, G.V. Serra 2002, 'Histomorphometric and functional studies of the rat thyroid throughout the estrouscycle Histomorfometria e função tireoidiana no ciclo estral da rata', Arquivo Brasileiro de Medicina Veterinária e Zootecniahttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352002000100017. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Every animal showed cytological alterations by the progression from proestrus to estrus.
Aracélle Elisane Alves, Eliandra Antonia Pires, Ivo Walter dos Santos, Wilter RicardoRussiano Vicente, Ana Paula Coelho Ribeiro, Maricy Ferreira Apparício 2007, 'Gonadotrophin in the induction of estrus in bitches Gonadotrofinas na indução do estroem cadelas', Revista Brasileira de Saúde e Produção Animalhttp://revistas.ufba.br/index.php/rbspa/article/view/795. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The implanted area was measured during the proestrus phase and after hormonal treatment.
Vera Lúcia Rodrigues Lobo, José Maria Soares Júnior, Manuel de Jesus Simões, Ricardodos Santos Simões, Geraldo Rodrigues de Lima, Edmund C Baracat 2008, 'Does gestrinone antagonize the effects of estrogen on endometrial implants upon theperitoneum of rats?', Clinicshttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-59322008000400019. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Intact form of caspase-3 was maximal at proestrus and was reduced only at estrus.
Asselin Eric, Shooner Carl, Leblanc Valerie, Dery Marie-Claude 2003, 'Regulation of Akt expression and phosphorylation by 17β-estradiol in the rat uterusduring estrous cycle', Reproductive Biology and Endocrinologyhttp://www.RBEj.com/content/1/1/47. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
During the proestrus phase, the exfoliative cytology arrangement showed high frequency of intermediate and superficial cells.
Diva Anelie deAraujo Guimarães, Sylvia Cristina Garcia de Garcia, Yvonnick le Pendu,Natália Inagaki de Albuquerque 2011, 'Determinação do ciclo estral em catetos Pecari tajacu: aspectos colpocitológicos eclínicos Determination of the estrous cycle in collared peccary Pecari tajacu: colpocytologicaland clinical aspects', Acta Amazonicahttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672011000400016. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)