Some biological aspects of semen were investigated in the Persian sturgeon, Acipenser persicus, by determination of seminal plasma indices (ionic composition and osmolality), sperm density and their relationships with sperm motility. The osmolality of seminal plasma ranged from 42.00 to 111.00 mOsmol Kg-1. The concentrations of Sodium (Na+), Potassium (K+), Chloride (Cl-), Calcium (Ca2+) and Ma...

1. Muscle electrolyte (Na, K, Cl, P) concentra­ tions and fluid compartments of six children with Bartter's syndrome were compared with those of 17 control children. From four of the patients biopsies were taken twice, before and after treat­ ment with potassium chloride and spironolactone. Muscle electrolytes were determined by neutron activation in tissue sampled by needle biopsy. Results wer...

Effects of humic acid on some vegetative characteristics and mineral concentrations of Mexican lime were investigated under different salinity concentrations. Four doses of humic acid (0, 1500, 3000 and 4000 mg/kg soil) and four salinity levels (1500, 2500, 3500 and 4500 µmos) were applied on Mexican lime seedlings. Experiment was conducted as a factorial arrangement based on a completely rando...

Hypokalemic periodic paralysis is anautosomal dominantdisease characterized by muscle weakness or paralysis with a matching fall in blood potassium levels. Paralysis attacks often occur in adolescence and are induced by strenuous exercise followed by rest, high carbohydrateor high sodiummeal content, sudden changes in temperature, and even excitement, noise, flashing lights and cold temperature...

Albino rats weighing 160 to 175 gm. were fed a complete synthetic diet containing 0.003 per cent potassium and 0.7 per cent sodium for 40 days. Controls were given the same diet plus adequate added potassium. 1. Data from analyses of serum and skeletal muscle showed (a) a fall in serum chloride concentration and an increase in serum carbon dioxide concentration and pH in the potassium-deficient...

le tI. Annual sweetcJover (Melilotus segetalis (Brot.) Ser. plants from the Guadalquivir salt marsh (S.W. of Spain) were grown in a glasshouse, on sandy soil with nutrient solution and four salt treatments (O, 10, ot 50 and 100 mM NaC!). Plants (five replicates per treatment and age) were harvested at 50, 90 and 120 ,1. days after germinatíon. Sodium, chloride and potassium were determined for ...

Adrenal 17-hydroxycorticosteroid (17-OHCS) secretion was followed after injection of tetramethylammonium or potassium chloride. In unanesthetized dogs the adrenal venous blood was collected by a modification of the method of Satake and his co-workers and was analyzed for 17-OHCS by the method of Nelson and Samuels. The 17-OHCS secretion rate before injection was 0.03 0.29 ƒÊg/kg/min. After inje...