What question did this study set out to answer?

To identify the specific sites of citrate and calcium reabsorption along the renal tubule and evaluate how different chemical infusions influence their transport.

October 1, 1963American Journal of Physiology-Legacy Content

Site of reabsorption of citrate and calcium in the renal tubule of the dog

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To identify the specific sites of citrate and calcium reabsorption along the renal tubule and evaluate how different chemical infusions influence their transport.
Assessed canine renal clearance using the stop-flow technique during systemic infusions.
Administered calcium chloride alongside neutral sodium salts of malate, citrate, and ethylenediaminetetraacetate (EDTA).
Measured simultaneous tubular patterns of calcium and citrate alongside sodium, potassium, creatinine, and para-aminohippurate (PAH).
Citrate reabsorption localized to the proximal nephron coinciding with PAH secretion, whereas calcium reabsorption reached its minimum in the distal tubule coinciding with sodium reabsorption.
Malate infusion completely abolished citrate reabsorption and stimulated distal potassium secretion without raising renal tissue citrate concentrations.
EDTA infusion eliminated the distal calcium reabsorption minimum without altering proximal citrate reabsorption patterns.

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Implication

Experimental study reveals distinct proximal citrate and distal calcium reabsorption in canine nephrons, indicating anatomically independent transport sites.

Cite This Study

Grollman et al. (1963) studied this question.

synapsesocial.com/papers/6a1310298f1bac20a09eccf3 https://doi.org/10.1152/ajplegacy.1963.205.4.697

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Implication

Experimental study reveals distinct proximal citrate and distal calcium reabsorption in canine nephrons, indicating anatomically independent transport sites.

Site of reabsorption of citrate and calcium in the renal tubule of the dog

Key Points

Discussion

Implication

Cite This Study

Site of reabsorption of citrate and calcium in the renal tubule of the dog

Key Points

Discussion

Implication

Cite This Study

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