The postpartum buffalo: I. Endocrinological changes and uterine involution

Elwishy, A.B.

doi:10.1016/j.anireprosci.2006.03.004

Cited by 25 publications

(20 citation statements)

References 31 publications

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“…One study reported that uterine involution was not as complete by 3 months postpartum in women with cesarean deliveries compared to those with vaginal delivery, but as noted above, we found no effect of cesarean delivery on fibroid regression. Similarly, animal studies have shown a delay in uterine involution secondary to subclinical infection and severe endometritis (but not mild endometritis);14–15 we found no association with fibroid regression for infections or antibiotic use, while fever appeared to be marginally important. Our infection data was not limited to nor specified endometritis, so more detailed future study is needed.…”

Section: Commentsupporting

confidence: 63%

Postpartum factors and natural fibroid regression

Laughlin

Hartmann

Baird

2011

American Journal of Obstetrics and Gynecology

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Objective-Many fibroids regress with pregnancy or postpartum involution. We sought to identify factors that might inhibit or enhance this natural regression.Study design-We used a prospective cohort of women with fibroids (n=494) determined by ultrasound screening during the early first trimester identified from the Right from the Start study. Ultrasounds were repeated three to six months postpartum (n=279). Logistic regression analyses were used to identify factors associated with fibroid regression (>50% reduction in volume).Results-Postpartum progestin users had significantly less fibroid regression (p=0.01), while there was no association for combined estrogen-progestin use. Cesarean delivery and fever (hypothesized to inhibit regression) and breast feeding (hypothesized to enhance regression) were not associated with fibroid regression.Conclusion-Progestin use in the postpartum period may limit regression of fibroids, consistent with prior literature on progesterone's role in fibroid development. Research into progestin-only treatments in critical reproductive periods is needed.

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Section: Commentsupporting

confidence: 63%

Postpartum factors and natural fibroid regression

Laughlin

Hartmann

Baird

2011

American Journal of Obstetrics and Gynecology

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“…2000; De Rensis and Scaramuzzi 2003). Post‐partum anoestrus in buffalo has also been summarized in a number of reviews (Gupta and Das 1994, 1996; El‐Wishy 2007a,b), yet, to date despite of its several ill effects on reproductive efficiency, summer anoestrus and its impact as such has not been reviewed adequately. In this review, summer anoestrus in buffaloes has been described with special reference to factors responsible, endocrine profile, managemental and therapeutic approaches to ameliorate the condition.…”

Section: Introductionmentioning

confidence: 99%

Summer Anoestrus in Buffalo – A Review

Das

Khan

2010

Reprod Domestic Animals

109

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The present review addresses summer anoestrus in buffaloes. The condition is a major impediment in the improvement of reproductive as well as productive efficiency in buffalo. Factors affecting summer anoestrus include environment, nutrition and management. The environmental factors especially longer day length and increased temperature with high humidity pre-dispose to the condition when the nutritive status of buffaloes is poor. Buffaloes with summer anoestrus fail to exhibit oestrus as a result of aberration in the endocrine profile leading to ovarian inactivity. Increased day length with high environmental temperature causes hyper-prolactinaemia, suppressing the secretion of gonadotrophins, which leads to an alteration in ovarian steroidogenesis. Heat stress produced during summer also affects folliculogenesis, follicular fluid microenvironment and oocyte quality. A large number of hormonal regimens have been used with varying degree of efficacy in terms of oestrus induction and conception rate. A combined strategy of improvement in environment, nutrition and management is pre-requisite for hormonal manipulation in order to improve productivity in summer anoestrus buffaloes. A brief description of summer anoestrus with special reference to factors responsible, endocrinology, deleterious effects on reproductive system and possible remedial measures is presented in this review.

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“…The highest number of follicles was observed on day 3, 10 and 20 of study as compared to other days. Lucy et al, (1991) and El-Wishy (2007) reported that the early postpartum period is characterized by reduction in the number of small sized follicles. In contrast to our study, Dutt et al, (2014) reported the mean number of small follicle in a range between 3.17±0.17 to 4.17±0.48 without any significance in noncyclic Murrah buffaloes.…”

Section: Ovarian Dynamics In Non-cyclic Buffaloesmentioning

confidence: 99%

Comparative Study of Follicular Turn Over in Cyclic and Non-Cyclic Murrah Buffaloes through 2D Trans-Rectal Ultrasonography

Singh¹,

Chandolia²,

Dutt³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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The present research was based on study of follicular dynamics in cyclic (n=6) and noncyclic (n=6) Murrah buffaloes by using 2D trans-rectal ultrasonography from day 1 to 21 of study period. During each examination, number of small (<4mm), medium (4-8mm) and large follicles (>8mm) were assessed along with diameter of medium and large follicles. Moreover, diameter of corpus luteum was also studied daily in cyclic animals. The number of small follicles was significantly (P<0.05) higher on 6 th day (2.75±0.25) of cycle as compared to number of small follicles on days 4, 9, 14, 16 and 18-21 of study in cyclic animals. The number of small follicles in non-cyclic buffaloes did not differ significantly (P<0.05) on day 3 (2.00±0.00), 10 (2.00±0.00) and 20 (2.00±0.58) of observations but these were significantly higher than other days of study. Significantly higher number of medium size follicles was recorded on 6 th day (4.50±1.50) as compared to day 18 and 20 of study in cyclic animals. But there was no variation in non-cyclic animals throughout the study. The number of large follicles on day 3 (1.80±0.20) versus days 15, 16 and 18-20 of study varies significantly (P<0.05) while on other days there was non-significant variation. The number of large follicles in cyclic animals varied nonsignificantly throughout the study. The diameter of medium sized follicles in cyclic animals on day 5 (6.77±0.42) was significantly higher than other days of cycle except days 19 and 20 of the cycle. However, the diameter of medium follicles on 1 st day (7.18±.45mm) of the study was significantly higher than follicles of days 7, 11-13, 17-19 and 21 of study in non-cyclic animals. The diameter of largest follicles recorded between 11.45±2.35mm and 14.12±1.40mm in cyclic and non-cyclic animals, respectively. The large size follicle diameter on 21 st day of study was significantly (P<0.05) higher than the diameter of 6 th day while on other days there was non-significant variation in non-cyclic animals. In cyclic buffaloes, CL appeared on 5 th day of cycle and attained maximum size on 14 th day (16.43±.40mm) and then declined. From the present study, it was concluded that the selected non-cyclic animals were not in true anestrus condition as there was follicles development on ovaries that reaches to preovulatory size but not ovulated that may be due to irregular gonadotrophin synthesis or hormonal imbalance and managemental errors. K e y w o r d s2D ultrasonography, Corpus luteum, Follicle, Murrah buffaloes.

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The postpartum buffalo: I. Endocrinological changes and uterine involution

Cited by 25 publications

References 31 publications

Postpartum factors and natural fibroid regression

Postpartum factors and natural fibroid regression

Summer Anoestrus in Buffalo – A Review

Comparative Study of Follicular Turn Over in Cyclic and Non-Cyclic Murrah Buffaloes through 2D Trans-Rectal Ultrasonography

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