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Dive into the research topics where M. Usami is active.

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Featured researches published by M. Usami.


European Urology Supplements | 2013

E80 Administration of the selective alpha 1A adrenoceptor antagonist silodosin facilitates expulsion of size 5–10 mm distal ureteral stones, as compared to control

Y. Itoh; A. Okada; K. Taguchi; Y. Hirose; K. Niimi; Y. Fujii; T. Kobayashi; M. Usami; S. Hamamoto; R. Ando; M. Hirose; T. Yasui; K. Tozawa; K. Kohri

Objective Recently, we reported that alpha 1A-adrenoceptor (AR) is the main participant in phenylephrine-induced human ureteral contraction. We therefore decided to carry out a prospective randomized study to evaluate the effects of silodosin, a selective alpha 1A AR antagonist, as a medical expulsive therapy (MET) for distal ureteral stones.


European Urology Supplements | 2014

805 Three novel susceptibility loci identified from a genome-wide association study (GWAS) are associated with urolithiasis risk

T. Yasui; A. Okada; M. Usami; S. Hamamoto; R. Ando; Y. Itoh; S. Sasaki; Y. Hayashi; Y. Higashi; Y. Sato; K. Kohri


European Urology Supplements | 2013

E18 Association of the loci 5q35.3, 7q14.3, and 13.q14.1 with urolithiasis in the Japanese population

T. Yasui; A. Okada; M. Usami; Y. Hirose; Y. Ito; K. Taguchi; Y. Fujii; K. Niimi; S. Hamamoto; R. Ando; M. Hirose; Y. Itoh; K. Tozawa; Y. Higashi; Y. Sato; K. Matsuda; K. Kohri


European Urology Supplements | 2013

311 Active phagocytosis and processing of calcium oxalate monohydrate crystals in an in vitro macrophage model

A. Okada; T. Yasui; L. Zuo; K. Taguchi; Y. Fujii; Y. Itoh; Y. Hirose; M. Usami; K. Niimi; R. Ando; T. Kobayashi; S. Hamamoto; M. Hirose; K. Tozawa; K. Kohri


European Urology Supplements | 2013

E88 Macrophage-derived cytokines and chemokines may be novel markers to predict calcium oxalate stone formation in humans

A. Okada; T. Yasui; K. Taguchi; Y. Ito; Y. Hirose; Y. Fujii; K. Niimi; M. Usami; T. Kobayashi; S. Hamamoto; M. Hirose; Y. Itoh; K. Tozawa; K. Kohri


European Urology Supplements | 2012

856 Calcium oxalate crystals could be englobed by macrophages during kidney stone formation in vitro and in vivo models

A. Okada; K. Taguchi; Y. Hirose; K. Niimi; Y. Fujii; T. Kobayashi; M. Usami; S. Hamamoto; M. Hirose; Y. Itoh; T. Yasui; K. Tozawa; K. Kohri


European Urology Supplements | 2012

952 Efficacy of Dornier official technical training for SWL treatment at the university hospital

S. Hamamoto; A. Okada; K. Taguchi; Y. Hirose; K. Niimi; Y. Fujii; R. Ando; T. Kobayashi; M. Usami; M. Hirose; Y. Itoh; T. Yasui; K. Tozawa; K. Kohri


European Urology Supplements | 2011

712 HYPOTHETICAL NEW ASPECTS OF HUMAN KIDNEY STONE FORMATION; COMPARISON OF CLINICAL AND PATHOLOGICAL FINDINGS OF STONE-FORMING AND NON-STONE-FORMING KIDNEYS

A. Okada; K. Nakaoka; J. Ichikawa; Y. Hirose; K. Taguchi; K. Niimi; Y. Fujii; M. Usami; T. Kobayashi; S. Hamamoto; M. Hirose; Y. Itoh; T. Yasui; K. Tozawa; K. Kohri


European Urology Supplements | 2011

706 RENAL MACROPHAGE MIGRATION AND CRYSTAL PHAGOCYTOSIS VIA INFLAMMATORY-RELATED GENE EXPRESSION DURING KIDNEY STONE FORMATION AND ELIMINATION IN MICE

A. Okada; S. Hamamoto; J. Ichikawa; K. Nakaoka; Y. Hirose; K. Taguchi; Y. Fujii; K. Niimi; M. Usami; T. Kobayashi; M. Hirose; Y. Itoh; T. Yasui; K. Tozawa; K. Kohri


European Urology Supplements | 2011

717 OSTEOPONTIN HAS A CRUCIAL ROLE IN ULTRASTRUCTURAL CONVERSION OF CALCIUM OXALATE CRYSTALS INTO MATRIX-INVOLVING KIDNEY STONES

A. Okada; S. Hamamoto; J. Ichikawa; K. Nakaoka; K. Taguchi; Y. Hirose; Y. Fujii; K. Niimi; M. Usami; T. Kobayashi; M. Hirose; Y. Itoh; T. Yasui; K. Tozawa; K. Kohri

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