Aquaporin‐1 expression in the chick embryo chorioallantoic membrane

Ribatti, Doménico; Frigeri, Antonio; Nicchia, Grazia Paola; Giorgis, Michela De; Roncali, Luisa; Svelto, María

doi:10.1002/ar.10123

Cited by 25 publications

(19 citation statements)

References 26 publications

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“…The mRNA levels of rat AQPs 1, 3, and 4 reached maximum at the time of birth, whereas the level of rat AQP2 mRNA continued to increase postnatally for 10 days [6] and 4 weeks [76]. AQP1 homologue is also expressed at ectodermal and endodermal epithelia and chorioallantoic membrane blood vessels (endothelium and smooth muscle) of chick embryos [65].…”

Section: Aqps During Development and Maturationmentioning

confidence: 95%

Urine concentration and avian aquaporin water channels

Nishimura

2008

Pflugers Arch - Eur J Physiol

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Although birds and mammals have evolved from primitive tetrapods and advanced divergently, both can conserve water by producing hyperosmotic urine. Unique aspects in the avian system include the presence of loopless and looped nephrons, lack of the thin ascending limb of Henle's loop, a corticomedullary osmotic gradient primarily consisting of NaCl without contribution of urea, and significant postrenal modification of final urine. The countercurrent multiplier mechanism operates between the descending and ascending limbs of Henle via recycling of a single solute (NaCl) with no water accompaniment, forming an osmotic gradient along the medullary cone. Bird kidneys and developing rat kidneys share morphological and functional characteristics. Avian kidneys express aquaporin (AQP) 1, 2, and 4 homologues that share considerable homology with mammalian counterparts, but their distribution and function may not be the same. AQP2 expression in Japanese quail (q) evolves in the collecting duct of early metanephric kidneys and continues to increase in intensity and distribution during nephrogenesis and maturation. qAQP2 mRNA and protein are increased by arginine vasotocin (avian ADH), but vasotocin-induced enhancement of cAMP production and water permeability are less marked than in mammalian kidneys. Nephrogenesis is delayed by insufficient nutrition in avian embryos and newborns and results in fewer nephrons and an impaired water balance in adults. Diabetes insipidus quail with homozygous autosomal recessive mutation and an unaffected vasotocin system have low AQP2 expression, underdeveloped medullary cones. Comparative studies will provide important insight into integrative, cellular, and molecular mechanisms of epithelial water transport and its control by humoral, neural, and hemodynamic mechanisms.

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Section: Aqps During Development and Maturationmentioning

confidence: 95%

Urine concentration and avian aquaporin water channels

Nishimura

2008

Pflugers Arch - Eur J Physiol

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“…The trophoectoderm gives rise to the placenta and chorion; aquaporins 1, 3, 8 and 9 are water channel genes previously reported to be in the placenta and/or chorion of the human and sheep [18-21]. AQP1 has also been reported to be in the chick chorioallantoic membrane [22]. AQP1 is in the vasculature and AQP3 and 9 are in the apical membranes of human and ovine term placenta and chorion.…”

Section: Placenta and Fetal Fluid Compartmentsmentioning

confidence: 99%

Aquaporins in development – a review

Liu

Wintour

2005

Reprod Biol Endocrinol

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Water homeostasis during fetal development is of crucial physiologic importance. It depends upon maternal fetal fluid exchange at the placenta and fetal membranes, and some exchange between fetus and amniotic fluid can occur across the skin before full keratinization. Lungs only grow and develop normally with fluid secretion, and there is evidence that cerebral spinal fluid formation is important in normal brain development. The aquaporins are a growing family of molecular water channels, the ontogeny of which is starting to be explored. One question that is of particular importance is how well does the rodent (mouse, rat) fetus serve as a model for long-gestation mammals such as sheep and human? This is particularly important for organs such as the lung and the kidney, whose development before birth is very much less in rodents than in the long-gestation species.

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“…Davis et al (1988) suggested by using water-stressed developing eggs that the action of the CAM was an integral component of the osmoregulatory system of the chick embryo. A family of molecular water channels, aquaporins, was expressed in CAM blood vessels and increased from embryonic day 10 (Ribatti et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

Development of a method to control the water evaporation of hatching eggs during incubation

et al. 2010

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Three experiments were conducted to develop methods to control the amount of water loss and to evaluate the metabolic effects of water condition in the White Leghorn breeder eggs during incubation. One hundred twenty, 54, and 90 Julia strain White Leghorn breeder eggs were incubated at 37.8 degrees C, 60% RH in experiments 1, 2, and 3. In experiment 1, eggs were drilled with various bore diameters of 0, 0.5, 1, 2, 3, 4, and 5 mm on the blunt end of the eggshell. In experiment 2, 4 x 4 mm(2) windows were cut into the eggs or the eggs were drilled with 5 holes of bore diameter 2 mm on the blunt end of eggshell. In experiment 3, eggs were drilled with 1, 3, 5, and 7 holes of diameter 2 mm on the blunt end of eggshell. Eggs were treated on d 3 of each experiment and the amount of water loss was recorded on d 19 of incubation. Embryo growth was evaluated in experiments 2 and 3. In addition, the livers of embryos were collected in the 0-, 1-, 3-, and 5-hole treatment groups after weighing eggs to determine 3-hydroxy acyl coenzyme A dehydrogenase activity. In experiment 1, although higher water loss was observed in all windowed eggs than in control, there were no differences in amount of water loss among all bore diameters. Accordingly, that was not successful to control amount of water loss. In experiment 2, higher water loss was observed in drilled eggs at the same levels in windowed eggs as in control. Drilling holes was a more useful treatment to control amount of water loss on incubated eggs than windowing. In experiment 3, amount of water loss increased linearly with increasing number of holes on the blunt end of eggshell. Hepatic 3-hydroxy acyl coenzyme A dehydrogenase activity increased with increasing the number of drilled holes.

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Aquaporin‐1 expression in the chick embryo chorioallantoic membrane

Cited by 25 publications

References 26 publications

Urine concentration and avian aquaporin water channels

Urine concentration and avian aquaporin water channels

Aquaporins in development – a review

Development of a method to control the water evaporation of hatching eggs during incubation

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