Progesterone and estradiol profiles in different reproductive stages of captive collared peccary ( Pecari tajacu ) females assessed by fecal metabolites

Ahuja-Aguirre, Concepción; Buen, Lorena López de; Rojas‐Maya, Susana; Hernández-Cruz, Bertha C.

doi:10.1016/j.anireprosci.2017.03.008

Cited by 8 publications

(3 citation statements)

References 25 publications

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“…The variation in serum concentrations of E2 and progesterone observed in A. lituratus is similar to other mammals, such as Pecari tajacu (Ahuja‐Aguirre, López‐Debuen, Rojas‐Maya, & Hernández‐Cruz, ) and Prionailurus bengalensis euptilurus (Adachi et al, ). However, they differ from others, such as Moschus berezovskii (Wang et al, ), in which estradiol do not change during gestation, and Macaca fuscata (Shimizu & Mouri, ), which presents stable progesterone levels throughout pregnancy.…”

Section: Discussionsupporting

confidence: 68%

Evaluation of the uterine hormonal control of the bat Artibeus lituratus during the different phases of its reproductive cycle

Santiago

Albernaz

Santos

et al. 2020

Journal of Morphology

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Artibeus lituratus is a frugivorous bat that directly assists in the restoration of degraded habitats through the effective dispersion of seeds and fruits. Given its great importance, this work aimed to evaluate the uterine hormonal control of A. lituratus during its different reproductive phases. The uteri of 30 sexually mature adult females, five specimens for each of the six sample groups (NON, nonreproductive; P1, initial pregnancy; P2, intermediate pregnancy; P3, advanced pregnancy; LAC, lactating; P + LAC, pregnant‐lactating), were submitted to analyses of serum estradiol and progesterone concentrations, in addition to immunohistochemical analyses. Both estradiol and progesterone, gradually increased during pregnancy, with a marked significant increase in P3 females. Both returned to low levels in LAC‐females; however, estradiol levels decreased further in P + LAC‐females, while progesterone increased in the same group. In general, signs indicative of aromatase expression were observed in the endometrium of all analyzed groups and in the placenta of bats in the gestation groups. Similarly, ERα and PR were expressed in the myometrium, endometrium and placenta at varying levels of intensity. The results indicate that the uterine microenvironment of A. lituratus is directly regulated by serum concentrations of estradiol and progesterone, and fluctuations in these concentrations control morphological and physiological changes of this organ during different phases of the reproductive cycle. Research highlights Increases in serum concentrations of estradiol and progesterone coordinate the gestational period of A. lituratus. Estradiol activates ERα, stimulating cell proliferation in the uterus, in addition to activating the expression of PR, which trigger the quiescence of the myometrium and stimulation of the secretion and differentiation of the endometrium. Results showed several similarities to humans, indicating the use of A. lituratus as an animal model in reproductive studies.

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Section: Discussionsupporting

confidence: 68%

Evaluation of the uterine hormonal control of the bat Artibeus lituratus during the different phases of its reproductive cycle

Santiago

Albernaz

Santos

et al. 2020

Journal of Morphology

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“…Milk samples are usually obtained from lactating animals while urine samples will require the fixing of catheters and some animal restraint. Fecal samples, however, can be collected at any time with ease and without any stress or restraint [ 23 , 24 , 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

Opportunities and challenges associated with fecal progesterone metabolite analysis

et al. 2018

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Conventionally, plasma or milk progesterone evaluations are used to determine the reproductive status of female animals. Collection of such samples is often associated with difficulties of animal handling and restraint. Measurable quantities of progesterone metabolites are found in feces of animals. Their concentrations are known to be well correlated to plasma progesterone levels and are, therefore, used as non-invasive samples for assessing reproductive function in a wide range of animal species. Although the analysis of fecal progesterone metabolites has been widely accepted in many laboratories, several factors are known to affect the results from this valuable analytical technique. Some of these factors include storage/transportation media for fecal samples, type of solvent that is used for extraction of progesterone metabolites from feces, and the type and sensitivity of an assaying technique employed. Although fecal progesterone metabolites analysis is associated with some difficulties, it can effectively be used to monitor reproductive function in a wide range of animal species. This review aims to highlight the usefulness of fecal progesterone metabolite analysis as a non-invasive technique in monitoring reproductive function in animals. The article mainly focuses on the many opportunities and challenges associated with this analytical technique.

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“…Os suínos domésticos também podem ser utilizados como modelos experimentais para suídeos e tayassuídeos silvestres, devido às proximidades filogenéticas. Alguns estudos já foram realizados utilizando a matriz fecal em espécies silvestres (Ahuja-Aguirre et al, 2017;Berger et al, 2006;Macchi et al, 2010). Entretanto, somente Berger et al (2006) monitoraram longitudinalmente o ciclo estral.…”

Section: Resultsunclassified

Monitoring of progesterone and estradiol fecal metabolites during estrous cycle in sows

Nunes

Claudio

Ferreira

et al. 2019

Pubvet

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Resumo. O objetivo deste estudo foi avaliar os níveis de metabólitos fecais de progesterona e estradiol ao longo do ciclo estral em fêmeas suínas. Assim, amostras de fezes foram coletadas de quatro fêmeas adultas saudáveis e vazias duas vezes por semana por 75 a 200 dias, dependendo do indivíduo. Os metabólitos fecais de progesterona e estradiol foram dosados por enzimaimunensaio. A duração do ciclo estral estimada (~21 dias), bem como a duração das fases progesterônica (~12 dias) e não progesterônica (~8 dias) corroboraram com as relatadas na literatura, com diferenças entre as fases para os metabólitos fecais de progesterona. Houve uma ausência de sincronia entre os metabólitos fecais de progesterona e estradiol, relacionada com as diferenças na metabolização e excreção destes hormônios. Este estudo demonstrou a viabilidade no uso de amostras fecais para o monitoramento longitudinal do ciclo estral em suínos. Entretanto, é necessário considerar as diferenças na metabolização dos hormônios ao avaliar a interação hormonal durante o ciclo estral.

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Progesterone and estradiol profiles in different reproductive stages of captive collared peccary ( Pecari tajacu ) females assessed by fecal metabolites

Cited by 8 publications

References 25 publications

Evaluation of the uterine hormonal control of the bat Artibeus lituratus during the different phases of its reproductive cycle

Evaluation of the uterine hormonal control of the bat Artibeus lituratus during the different phases of its reproductive cycle

Opportunities and challenges associated with fecal progesterone metabolite analysis

Monitoring of progesterone and estradiol fecal metabolites during estrous cycle in sows

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