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Nutritive value and wholesomeness of fermented foods (1970)

Van Veen, Andre G. ; Steinkraus, Keith H.

s.l. : American Chemical Society

Journal of agricultural and food chemistry 18 (1970), S. 576-578

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ISSN: 1520-5118

Source: ACS Legacy Archives

Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1021/jf60170a038

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Effects of sucrose solution on the longitudinal tissue resistivity of trabecular muscle from mammalian heart (1973)

Kléber, André G.

Springer

Pflügers Archiv 345 (1973), S. 195-205

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ISSN: 1432-2013

Keywords: Heart Muscle ; Longitudinal Resistance ; Sucrose ; Calcium ; Longitudinal Ion Distribution

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Summary Trabecular muscle bundles from sheep and calf hearts were exposed to isosmotic sucrose solution in a single sucrose gap arrangement. Inside longitudinal specific resistanceR i , calculated from recordings of the inside and outside action potentials across the gap and the total longitudinal resistance in the mid-interpolar region, increase tenfold from an initial value of 463 Ω cm during 4 h of sucrose perfusion. Upon re-perfusion with Tyrode for 8–10 hR i decreased to 1000 Ω cm. The marked increase ofR i was prevented by addition of 10−4 M CaCl2 to the sucrose solution. The inside and outside action potentials across the gap became distorted whenR i reached high values. Longitudinal distribution of sodium and potassium in a number of trabeculae was determined with activation analysis. These experiments revealed considerable mixing between sodium and sucrose near the sucrose-Tyrode junction. The longitudinal distribution of potassium suggests that loss of ions from the cells cannot account for the increase ofR i .