Transrectal combined thickness of the uterus and placenta in normal pregnant Egyptian buffalo-cows

Zaher, Hany A.; Abdalla, Hany; Labib, Faten M.; Eidaroos, Abdel-Salam

doi:10.1016/j.theriogenology.2011.11.013

Cited by 6 publications

(3 citation statements)

References 11 publications

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“…The uterine wall including the chorion laeve does not increase in thickness during gestation. Our findings were in contrast to CTUP measurements from the 3rd to the last month of gestation in buffalo; measurements in this species ranged from 3.3 to 12.0 mm, which was similar to the CTUP values of the present study, but in the buffalo values increased significantly from month to month [28]. A possible reason for this discrepancy may be that the measurements in buffalo cows were made at the dorsal part of the uterus, whereas in the present study, as well as in the mare, the measurements were made at the ventral uterine wall [22].…”

Section: Discussioncontrasting

confidence: 57%

Sonographic characteristics of the placenta, uterine wall, and placentomes during pregnancy in cows

Zoller

Peterson

Boos

et al. 2019

Tierarztl Prax Ausg G

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Objective In human medicine, contrary to bovine medicine, close monitoring of risk pregnancies is an integral part of obstetrics. A prerequisite for this is the knowledge of the normal findings during pregnancy. Material and methods For this purpose serial transrectal sonographic examination of the placentomes, uterine wall, and fetal membranes were carried out in 24 healthy (mean age 8.1 ± 3.7 years, Brown Swiss [n = 21], Red Holstein [n = 2], Simmental [n = 1]) cows from week 6 to 43 of gestation. An 8-MHz linear transducer was used to assess the thickness and appearance of the endometrium and myometrium, the height and width of placentomes, the thickness of the uterine wall including the adjacent chorion laeve (combined thickness of uterus and placenta, CTUP), and the echogenicity of the fetal fluids. The uterine wall and the placentomes were measured in 4 different zones of both uterine sides including a zone near the cervix, at the corpus near to the bifurcation, at the middle, and near the tip of the uterine horn. Results Placentome height and width were closely correlated with gestational age (height: r = 0.78; width: r = 0.83; both p < 0.0001). Placentome size increased progressively in all uterine zones until week 27, after which time their growth slowed until week 31 and then plateaued until parturition. Placentomes in the fetus-bearing horn were larger than in the non-fetus-bearing horn (p < 0.01) and were significantly smaller (height and width) near the tip of the horn than in the other 3 zones (p < 0.001 to < 0.01). The mean thickness of endometrium and myometrium, myometrium at the base of the placentome, and the mean CTUP did not change significantly during gestation. The echogenicity of the allantoic fluid did not change, but the amniotic fluid became more echogenic during gestation (p < 0.0001). Conclusion and clinical relevance Sonographic examination of placentomes and amniotic fluid are a promising diagnostic tool for the estimation of the duration of bovine pregnancies and for diagnosing possible complications.

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Section: Discussioncontrasting

confidence: 57%

Sonographic characteristics of the placenta, uterine wall, and placentomes during pregnancy in cows

Zoller

Peterson

Boos

et al. 2019

Tierarztl Prax Ausg G

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show abstract

“…B‐mode transrectal ultrasound scanning was conducted to measure the combined thickness of the uterus and placenta (CTUP; mm) and uterine arteries' cross‐sectional diameter at the ipsilateral and contralateral sides of the foetus (Ipsi and Contra MUA; cross‐sectional D, mm). For assessing CTUP, three to five points of thickness were evaluated at the level between the MUA and the allantoic sacs as shown in (Figure 1) following a previous study (Zaher et al, 2012). While the cross‐sectional MUA diameter was determined by taking the maximum diameter of three to five images of the MUA and the average was calculated (Abouelela et al, 2021; EL‐Sherbiny, ELShahat, et al, 2022).…”

Section: Methodsmentioning

confidence: 99%

“…During pregnancy, foetal differentiation, viability, growth and development require an unlimited blood supply carrying essential nutrients and withdrawing its wastes. Foetal blood demand increases gradually with pregnancy advancement being dramatic especially between mid to late gestation (Zaher et al, 2012). Uterine arteries' blood flow (UBF) controls placental functions and thickness and subsequently foetal well-being (Elmetwally et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Exogenous L‐arginine administration improves uterine vascular perfusion, uteroplacental thickness, steroid concentrations and nitric oxide levels in pregnant buffaloes under subtropical conditions

El‐Sherbiny

Samir

El-Shalofy

et al. 2022

Reprod Domestic Animals

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Heat stress (HS) during pregnancy adversely affects uterine vascular perfusion and foetal development. L‐arginine (L‐Arg), a nitric oxide (NO) precursor, has been proven to enhance an organ's vascular perfusion. Therefore, this study aimed to examine the effect of L‐Arg administration on the pregnant buffaloes' uterine haemodynamics and uteroplacental thickness under environmental HS conditions. For this purpose, pluriparous (n = 12) HS‐pregnant buffaloes (mid‐gestation, 180–190 days; temperature humidity index >85) were haphazardly assigned into two groups, either administered a single intravenous (IV) bolus of 5 mg/kg BW of L‐Arg Hcl (n = 6; ARG) or received normal saline (0.9%; IV; 25 ml) that served as a control group (n = 6; CON). Combined uteroplacental thickness (CUPT, mm), middle uterine arteries' (MUA) diameter (mm) and uterine Doppler haemodynamics (ipsilateral and contralateral to the pregnant horn) were examined utilizing B‐mode and colour Doppler ultrasonography, respectively. The serum levels of progesterone (P4), estradiol 17β (E2), nitric oxide (NO) and total antioxidant capacity (TAC) were assayed using commercial kits. The experimental time points were − 1, 0, 2, 4, 24, 48, 72, 96 and 120 h post‐L‐Arg administration. The ARG group showed higher (p < .05) CUPT and MUA diameter values starting at 24 h post‐treatment and onward than the control buffalo cows. In addition, there were improvements (p < .05) in the blood flow parameters in the ipsilateral MUA after L‐Arg treatment evidenced by lower values of pulsatility and resistive indices starting at 48 and 4 h, respectively and onward, and higher values of peak systolic velocity, coloured areas towards the pregnant uterine horn (both 24–72 h). Increases in the NO levels were found during the period between 4 and 120 h in the ARG group compared to the CON group. Moreover, significant increases in the E2 and P4 means were noted in the ARG group, especially at 24 h onward, respectively compared to the CON group. Concerning the TAC status, neither the administration nor the hours affected serum TAC levels in the HS pregnant buffaloes (CON and ARG). In conclusion, L‐Arg administration improved uteroplacental thickness and enhanced uterine haemodynamics, NO levels, and steroids production in mid‐pregnant buffalo cows under environmental heat stress conditions which could improve foetal growth and development.

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The nitric oxide serum level and combined utero-placental thickness in buffalo (Bubalus bubalis) affected by pregnancy pathology

et al. 2017

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Transrectal combined thickness of the uterus and placenta in normal pregnant Egyptian buffalo-cows

Cited by 6 publications

References 11 publications

Sonographic characteristics of the placenta, uterine wall, and placentomes during pregnancy in cows

Sonographic characteristics of the placenta, uterine wall, and placentomes during pregnancy in cows

Exogenous L‐arginine administration improves uterine vascular perfusion, uteroplacental thickness, steroid concentrations and nitric oxide levels in pregnant buffaloes under subtropical conditions

The nitric oxide serum level and combined utero-placental thickness in buffalo (Bubalus bubalis) affected by pregnancy pathology

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