The Physiology of Contractile Vacuoles

Contractile vacuole in the amoeba Pelomyxa carolinensis.

RIDDICK, DANIEL H. Contractile vacuole in the amoeba, Pelomyxa carolinensis. Am. J. Physiol. 215(3): 736-740. 1968.-The osmolality of the cytoplasm and contractile vacuole of the giant amoeba Chaos chaos was determined by micropuncture. Sodium and potassium concentrations of the cytoplasm and contractile vacuole were similarly obtained. Single contractile vacuoles were isolated. It was determin...

The Role of Adrenergic and Angiotensinergic Systems in Vascular Effect Of Alcoholic of Extract Trigonella foenum-graecum Seed In Diabetic Rats

Considering the anti-diabetic potential of Trigonella foenum-graecum (TFG) and its beneficial effect on aortic reactivity of diabetic rats, this study was conducted to evaluate the effect of its alcoholic seed extract on aortic reactivity and also figure out mechanisms including the role of adrenergic and angiotensinergic systems in streptozotocin-diabetic rats. Male Wistar rats were divided in...

The Role of Adrenergic and Angiotensinergic Systems in Vascular Effect Of Alcoholic of Extract Trigonella foenum-graecum Seed In Diabetic Rats

Considering the anti-diabetic potential of Trigonella foenum-graecum (TFG) and its beneficial effect on aortic reactivity of diabetic rats, this study was conducted to evaluate the effect of its alcoholic seed extract on aortic reactivity and also figure out mechanisms including the role of adrenergic and angiotensinergic systems in streptozotocin-diabetic rats. Male Wistar rats were divided in...

Inhibition of contractile vacuole function by brefeldin A.

Brefeldin A (BFA) causes a block in the secretory system of eukaryotic cells. In the scaly green flagellate Scherffelia dubia, BFA also interfered with the function of the contractile vacuoles (CVs). The CV is an osmoregulatory organelle which periodically expels fluid from the cell in many freshwater protists. Fusion of the CV membrane with the plasma membrane is apparently blocked by BFA in S...

The physiology of contractile vacuoles; the effects of short-term variations of temperature on a fresh-water peritrich ciliate.