Expression of acid-base-related proteins in mesonephric kidney of the rabbit

Tohru Matsumoto, Cornelia A. Winkler, Luc P. Brion, George J. Schwartz

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The mesonephric kidney, precursor to the metanephric kidney, comprises 30-50 nephrons, each with a glomerulus and proximal, distal, and collecting tubules. Although two different cell types have been identified in the mesonephric collecting tubule, no relationship to cells of the metanephric collecting duct has been established. To characterize expression of some of the acid-base-related proteins, we assayed for carbonic anhydrase (CA) activity and performed immunocytochemistry in mesonephroi from 15- to 20-day-old fetal rabbits. From total RNA, we detected expression of CA II and CA IV mRNA. Microdissected proximal and collecting tubules abundantly expressed both CA II and CA IV, at least to the extent observed in mature metanephric proximal tubules and collecting ducts. Histochemistry confirmed the expression of CA activity in these segments; in the collecting tubule, 28% of the collecting tubule cells were CA rich. Most CA-rich cells showed apical H+-ATPase and basolateral band 3 anion exchanger staining consistent with the findings in mature H+-secreting (α) intercalated cells of the metanephric collecting duct. CA-negative cells could be labeled with an antibody that identifies mature metanephric principal cells. Thus the mesonephric collecting tubule has many cells resembling mature α-intercalated cells and a majority of cells resembling principal cells. The similarity to the metanephric collecting duct suggests that the lineages of metanephric α-intercalated and principal cells may be closely related to those of the mesonephros.

Original languageEnglish (US)
JournalAmerican Journal of Physiology - Renal Fluid and Electrolyte Physiology
Volume267
Issue number6 36-6
StatePublished - Dec 1994

Fingerprint

Rabbits
Kidney
Acids
Carbonic Anhydrases
Proteins
Carbonic Anhydrase IV
Mesonephros
Carbonic Anhydrase II
Chloride-Bicarbonate Antiporters
Proton-Translocating ATPases
Nephrons
Immunohistochemistry
RNA
Staining and Labeling
Messenger RNA
Antibodies

Keywords

  • Anion exchanger
  • Carbonic anhydrase
  • Development
  • Histochemistry
  • Hydrogen ion-adenosinetriphosphatase
  • Immunofluorescence
  • Intercalated cell
  • Reverse transcription-polymerase chain reaction

ASJC Scopus subject areas

  • Physiology

Cite this

Expression of acid-base-related proteins in mesonephric kidney of the rabbit. / Matsumoto, Tohru; Winkler, Cornelia A.; Brion, Luc P.; Schwartz, George J.

In: American Journal of Physiology - Renal Fluid and Electrolyte Physiology, Vol. 267, No. 6 36-6, 12.1994.

Research output: Contribution to journalArticle

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