Perinatal Changes in Plasma and Adrenal Corticosterone and Aldosterone Concentrations in the Mouse

Dalle, M; Giry, J.; Gay, Martha D.; Delost, P

doi:10.1677/joe.0.0760303

Cited by 65 publications

(27 citation statements)

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“…Even when additional factors affecting morbidity are present, mortality data related to both birth weight and gestation age are essential for determining the chances of survival of the premature infant (Lubchenco et al, 1972 ;Papiernik, 1977). These results are comparable to those obtained in premature monkey (Digiacomo and Shaughnessy, 1972 ;Price et al, 1972 ;Hird et al, 1975 ;Shaughnessy et al, 1978) and premature piglet (Aumaitre et al, 1979 (Dalle et al, 1978 (Loctin, 1980). al., 1980).…”

supporting

confidence: 89%

Mortality in premature mice at birth and during neonatal development

Loctin¹,

Delost²

1983

Reprod. Nutr. Dévelop.

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Summary. This paper reports a statistical study of mortality and the number of newborns per litter. Two types of mortality were observed in premature mice, mortality at reanimation and breeding mortality. Mortality at reanimation was about 13 % ; breeding mortality, occurring only during the first 3 neonatal days, was of two types : primary neonatal mortality (10.9 %), occurring from the end of reanimation up to 6 h after birth, and secondary neonatal mortality (6.9 %) which appeared from days 2 to 3. The role of some factors causing mortality has been discussed.Introduction.

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supporting

confidence: 89%

Mortality in premature mice at birth and during neonatal development

Loctin¹,

Delost²

1983

Reprod. Nutr. Dévelop.

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“…9 pg.ml-i ) (P < 0.05) and reached 71.5 ± 8 pg. ml-1 (P < 0.01) 58 (Dalle et al, 1978) and mares (Giry et al, 1979) were about 400 pg. ml-1 , 350 pg.…”

Section: )mentioning

confidence: 90%

“…7). Similarly, plasma aldosterone levels decreased after delivery in ewes (Boulfekhar and Brudieux, 1980 ;Moncaup et al, 1980), mares (Giry et al, 1979), guinea-pigs (Giry and Delost, 1977), mice (Dalle et al, 1978) and women (Lammintausta and Erkkola, 1977). Although the metabolic clearance rate of aldosterone in ewes increased after parturition, the changes observed in the plasma levels of this hormone during the perinatal period in those animals could not be directly related to modifications in its catabolism (Moncaup et al, 1980 (Weir et al, 1975).…”

Section: )mentioning

confidence: 98%

Sodium and potassium in blood and milk and plasma aldosterone levels in high-yield dairy cows

Safwate¹,

Davicco²,

Barlet³

et al. 1981

Reprod. Nutr. Dévelop.

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Summary. Plasma sodium, potassium and aldosterone levels, daily milk production and milk sodium and potassium were measured in 10 Holstein x Friesian cows during a whole lactation period beginning in November and ending in November the following year. The milk production (4 p. 100 fat content) of these animals was 6 170 ± 66 kg (mean ± SEM).During the whole experimental period, the cows had free access to salt blocks and were thus always sodium-replete.Plasma sodium and potassium levels showed no significant variations during lactation. The daily excretion of sodium and potassium through milk paralleled that of daily milk production. Plasma aldosterone levels decreased sharply from 77.4! 4.0 pg. ml-1 at calving to 13.2 ! 3.6 pg.ml-1 (P < 0.01) on day 7 of lactation, then remained stable until day 50 (16.4:d:= 4 pg.ml-1 ). They increased slightly on day 155 (60 days after mating : 36 ± 5 pg. mi-1 ; P G 0.05) and abruptly after spring grazing (54.9! 11 pg.ml-1 ; P < 0.01), then remained high until the end of lactation (48.5! 12 pg. ml-1 ). Plasma aldosterone levels were 11.9 ! 2.4 pg . ml-1 in seven 24-month old, non-pregnant heifers fed the same winter ration as the cows. No relationship could be demonstrated between sodium and potassium concentrations in blood and milk or between those parameters and plasma aldosterone levels.Thus, in high-yield dairy cows, aldosterone does not seem to play a major role in the regulation of sodium and potassium excretion through milk.Introduction.

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“…The H19 transcripts were only localized in some clustered cells. The large variations of H19 gene (1980); (2) Dalle et al (1978); (3) Sanyal (1978); (4) Rhoda et al (1984); (5) Smith et al (1975); (6) McCormack and Greenwald (1974); (7) Chatelain et al (1989); (8) Lesage et al (1996); (9) expression were correlated with the morphological alterations of the endometrium. A moderate expression of H19 was found in stromal cells and the myometrium during the proestrus ( Figure 3, row 4) and the level of H19 transcription increased gradually during the proliferative phase until ovulation (estrus, Figure 3, row 1).…”

Section: H19 Gene Expression During Mouse Estrus Cyclementioning

confidence: 97%

Steroid hormones modulate H19 gene expression in both mammary gland and uterus

et al. 1999

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H19 is an imprinted and developmentally regulated gene whose product remains apparently untranslated. In a previous study on breast adenocarcinomas, we reported that overexpression of the H19 gene was signi®cantly correlated with the presence of steroid receptors, suggesting the putative role of hormones in H19 transcription. To determine the mode of steroid action, we have detected levels of H19 RNA synthesis during mammary gland development by in situ hybridization (ISH): two peaks of H19 transcription occur during puberty and pregnancy. Furthermore, we demonstrated by ISH that in the uterus H19 RNA synthesis is high during estrus and metestrus phases. To test steroid control of H19 transcription, ovariectomized and adrenalectomized mice were supplemented, 1 week after surgery, with 17-b-estradiol (E2, 20 mg/kg/day), progesterone (P, 1 mg/kg/day) or corticosterone (B, 0.3 mg/ kg/day) for 2 weeks. According to ISH data, E2 and to a lesser extent B stimulated H19 transcription in the uterus, whereas P inhibited it. To con®rm the in vivo results, in vitro experiments were performed using cultures of MCF-7 cells (a hormone-sensitive mammary cell line). E2 stimulated the endogenous H19 gene of this cell line and tamoxifen inhibited this e ect. Furthermore, we performed transient cotransfections in MCF-7, in HBL-100 (another hormone-sensitive mammary cell line) and in BT-20 (a hormone-insensitive mammary cell line) with various constructs of ERa (WT or mutated) and PR-A, in presence or absence of steroid hormones. We demonstrated that ERa up-regulated the H19 promoter in MCF-7 and in HBL-100, whereas PR-A did not have any e ect per se. Moreover, in MCF-7, PR-A antagonized clearly the ERa-mediated promoter enhancement, but in HBL-100 this counteracting e ect on the ERa up-regulation was not found. Interestingly, the same experiments performed in BT-20 cell line provided very similar results as those obtained in MCF-7 cells, with a clear down-regulation mediated by PR-A on the H19 promoter. All these in vitro data are in agreement with in vivo results. In addition, data obtained with ERa mutants indicate that H19 promoter activation is both ligand-dependent and ligand-independent. We have thus demonstrated that H19 gene expression is controlled by steroid hormones; furthermore, this gene is highly expressed in hormone-sensitive organs when the hormonal stimulation is accompanied with a morphological repair.

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Perinatal Changes in Plasma and Adrenal Corticosterone and Aldosterone Concentrations in the Mouse

Cited by 65 publications

References 0 publications

Mortality in premature mice at birth and during neonatal development

Mortality in premature mice at birth and during neonatal development

Sodium and potassium in blood and milk and plasma aldosterone levels in high-yield dairy cows

Steroid hormones modulate H19 gene expression in both mammary gland and uterus

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