Deletion of the lysyl oxidase-like 1 gene induces impaired elastin fiber synthesis and inefficient urethral closure in rats
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- KADEKAWA Katsumi
- Southern Knights’ Laboratory Co., Ltd. Department of Urology, Okinawa Kyodo Hospital
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- NISHIJIMA Saori
- Southern Knights’ Laboratory Co., Ltd.
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- NOGUCHI Katsuhiko
- Southern Knights’ Laboratory Co., Ltd.
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- OKITSU Shiho
- Departments of Biochemistry, Graduate School of Medicine, University of the Ryukyus
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- KARUBE Kennosuke
- Departments of Pathology and Cell Biology, Graduate School of Medicine, University of the Ryukyus
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- MATSUMOTO Seiji
- Center for Advanced Research and Education, Asahikawa Medical University
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- YAMAMOTO Hideyuki
- Departments of Biochemistry, Graduate School of Medicine, University of the Ryukyus
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- SUGAYA Kimio
- Southern Knights’ Laboratory Co., Ltd.
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抄録
<p>We investigated the bladder and urethral function in a rat model lacking the protein lysyl oxidase-like 1 (Loxl1). Female nulliparous rats of Loxl1−/− or age-matched wild type (WT) rats had leak-point pressure testing, cystometry, histopathological analyses of lower urinary tract, and contractile response of isolated detrusor strips to carbachol and electric field stimulation. The Loxl1−/− rats showed increased looseness and redundancy of the skin, the decreased intercontraction interval and voided volume in cystometry, the lower leak-point pressure, thinner elastic fibers of the mesentery, bladder, urethra and vagina, and smaller contractile response of detrusor strips to carbachol when compared to the WT rats. Thus, the insufficient hydrostatic mechanism of urethra via submucosal impaired elastin synthesis might reduce the resting urethral closure pressure and the diminished cholinergic contractile response of detrusor smooth muscle might be involved in bladder activity in the Loxl1−/− rats.</p>
収録刊行物
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- Biomedical Research
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Biomedical Research 42 (1), 23-31, 2021-02-10
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