Deletion of the lysyl oxidase-like 1 gene induces impaired elastin fiber synthesis and inefficient urethral closure in rats

被引：2

作者：

Kadekawa, Katsumi ^{[1
,2
]}

Nishijima, Saori ^{[1
]}

Noguchi, Katsuhiko ^{[1
]}

Okitsu, Shiho ^{[3
]}

Karube, Kennosuke ^{[4
,5
]}

Matsumoto, Seiji ^{[6
]}

Yamamoto, Hideyuki ^{[3
]}

Sugaya, Kimio ^{[1
]}

机构：

[1] Southern Knights Lab Co Ltd, Chatan, Okinawa, Japan

[2] Okinawa Kyodo Hosp, Dept Urol, 4-10-55 Kohagura, Naha, Okinawa, Japan

[3] Univ Ryukyus, Grad Sch Med, Dept Biochem, Nishihara, Okinawa, Japan

[4] Univ Ryukyus, Grad Sch Med, Dept Pathol, Nishihara, Okinawa, Japan

[5] Univ Ryukyus, Grad Sch Med, Dept Cell Biol, Nishihara, Okinawa, Japan

[6] Asahikawa Med Univ, Ctr Adv Res & Educ, Asahikawa, Hokkaido, Japan

来源：

BIOMEDICAL RESEARCH-TOKYO | 2021年 / 42卷 / 01期

关键词：

URINARY-INCONTINENCE; STRESS CONDITION; BLADDER; MECHANISMS; PRESSURE; WALL;

D O I：

10.2220/biomedres.42.23

中图分类号：

R-3 [医学研究方法]; R3 [基础医学];

学科分类号：

1001 ;

摘要：

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.

引用

页码：23 / 31

页数：9

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