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Altered Integrins Expression of Patients Affected by Cryptorchidism

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Objectives: The study aimed to investigate the expression of the integrin isoforms α7A and β1A, expressed by myogenic precursor cells, and α7B and β1D, expressed by mature muscle cells in… Click to show full abstract

Objectives: The study aimed to investigate the expression of the integrin isoforms α7A and β1A, expressed by myogenic precursor cells, and α7B and β1D, expressed by mature muscle cells in the cremaster of patients affected by an undescended testis. Methods: Fifteen samples of cremaster were obtained from patients undergoing surgery for an undescended testis. Thirty control specimens of cremaster were harvested from patients with congenital hydrocele or inguinal hernia. Immunofluorescent analysis was carried out using anti-α7A, β1A, α7B, and β1D integrin antibodies. Sections were observed using confocal laser scanning microscopy. Results: As compared with controls, a significant loss of a α7B (p = 0.0355) and β1D (p = 0.0069) integrins and a higher expression of α7A (p = 0.0003) and β1A (p = 0.0150) was detected in the cremaster of patients affected by an undescended testis. Conclusions: Our data document a critical alteration of the cytoskeleton of cremasteric smooth muscle cells in patients with an undescended testis. This might explain the altered function in smooth muscle cells in cremaster implied during testicular descent. We therefore speculate that the postnatal splicing of α7A to α7B and of β1A to β1D integrins is delayed. This could account for the common clinical scenario of spontaneous descent of the testes in the first months of life.

Keywords: altered integrins; muscle cells; undescended testis; expression; patients affected

Journal Title: Urologia Internationalis
Year Published: 2018

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