1.Effect of Acotiamide on Detrusor Underactivity Induced Through Bilateral Pelvic Nerve Crush Injury in Rats
Ei-ichiro TAKAOKA ; Kenji NAGAHAMA ; Jun KAMEI ; Toru SUGIHARA ; Satoshi ANDO ; Tetsuya FUJIMURA ; Naoki YOSHIMURA
International Neurourology Journal 2025;29(1):3-9
Purpose:
To investigate the effectiveness of acotiamide on lower urinary tract dysfunction by using a rat model of neurogenic underactive bladder induced through pelvic nerve crush (PNC) injury.
Methods:
Bilateral PNC injuries were performed on 8-week-old female Sprague-Dawley rats (PNC group); the sham surgery group was used as control (control group). Two weeks after surgery, awake cystometrography (CMG) was performed, and acotiamide (10 or 100 mg/kg) was subcutaneously administered to the control and PNC groups. Subsequently, CMG parameter values obtained before and after treatment were compared.
Results:
In baseline CMG, compared to control group, PNC group revealed statistically significant elevations in the intercontraction intervals (ICIs), number of nonvoiding contractions, baseline pressure, threshold pressure, bladder capacity, voided volumes, and postvoid residual. However, contraction amplitudes and voiding efficiency were significantly decreased. In the control group, compared with the baseline values, 10-mg/kg acotiamide resulted in statistically significant elevations in contraction amplitudes. Treatment with 100-mg/kg acotiamide led to statistically significant elevations in contraction amplitudes and decreases in ICI and bladder volume. In the PNC group, there were no statistically significant changes noted in CMG parameters after treatment with 10-mg/kg acotiamide (n=6). Compared with the baseline values, the administration of 100-mg/kg acotiamide significantly decreased ICI (1,025±186 seconds vs. 578±161 seconds; P=0.012), bladder capacity (1,841±323 µL vs. 871±174 µL, respectively; P=0.0059) and postvoid residual (223±46 µL vs. 44±22 µL, respectively; P=0.023), and increased contraction amplitudes (22.09±1.76 cm H2O vs. 43.84±6.87 cm H2O, respectively; P=0.012) and voiding efficiency (0.87±0.02 vs. 0.94±0.03, respectively; P=0.029).
Conclusions
Acotiamide showed effectiveness in the treatment of underactive bladder, possibly through activation of bladder afferent and detrusor activities.
2.Effect of Acotiamide on Detrusor Underactivity Induced Through Bilateral Pelvic Nerve Crush Injury in Rats
Ei-ichiro TAKAOKA ; Kenji NAGAHAMA ; Jun KAMEI ; Toru SUGIHARA ; Satoshi ANDO ; Tetsuya FUJIMURA ; Naoki YOSHIMURA
International Neurourology Journal 2025;29(1):3-9
Purpose:
To investigate the effectiveness of acotiamide on lower urinary tract dysfunction by using a rat model of neurogenic underactive bladder induced through pelvic nerve crush (PNC) injury.
Methods:
Bilateral PNC injuries were performed on 8-week-old female Sprague-Dawley rats (PNC group); the sham surgery group was used as control (control group). Two weeks after surgery, awake cystometrography (CMG) was performed, and acotiamide (10 or 100 mg/kg) was subcutaneously administered to the control and PNC groups. Subsequently, CMG parameter values obtained before and after treatment were compared.
Results:
In baseline CMG, compared to control group, PNC group revealed statistically significant elevations in the intercontraction intervals (ICIs), number of nonvoiding contractions, baseline pressure, threshold pressure, bladder capacity, voided volumes, and postvoid residual. However, contraction amplitudes and voiding efficiency were significantly decreased. In the control group, compared with the baseline values, 10-mg/kg acotiamide resulted in statistically significant elevations in contraction amplitudes. Treatment with 100-mg/kg acotiamide led to statistically significant elevations in contraction amplitudes and decreases in ICI and bladder volume. In the PNC group, there were no statistically significant changes noted in CMG parameters after treatment with 10-mg/kg acotiamide (n=6). Compared with the baseline values, the administration of 100-mg/kg acotiamide significantly decreased ICI (1,025±186 seconds vs. 578±161 seconds; P=0.012), bladder capacity (1,841±323 µL vs. 871±174 µL, respectively; P=0.0059) and postvoid residual (223±46 µL vs. 44±22 µL, respectively; P=0.023), and increased contraction amplitudes (22.09±1.76 cm H2O vs. 43.84±6.87 cm H2O, respectively; P=0.012) and voiding efficiency (0.87±0.02 vs. 0.94±0.03, respectively; P=0.029).
Conclusions
Acotiamide showed effectiveness in the treatment of underactive bladder, possibly through activation of bladder afferent and detrusor activities.
3.Effect of Acotiamide on Detrusor Underactivity Induced Through Bilateral Pelvic Nerve Crush Injury in Rats
Ei-ichiro TAKAOKA ; Kenji NAGAHAMA ; Jun KAMEI ; Toru SUGIHARA ; Satoshi ANDO ; Tetsuya FUJIMURA ; Naoki YOSHIMURA
International Neurourology Journal 2025;29(1):3-9
Purpose:
To investigate the effectiveness of acotiamide on lower urinary tract dysfunction by using a rat model of neurogenic underactive bladder induced through pelvic nerve crush (PNC) injury.
Methods:
Bilateral PNC injuries were performed on 8-week-old female Sprague-Dawley rats (PNC group); the sham surgery group was used as control (control group). Two weeks after surgery, awake cystometrography (CMG) was performed, and acotiamide (10 or 100 mg/kg) was subcutaneously administered to the control and PNC groups. Subsequently, CMG parameter values obtained before and after treatment were compared.
Results:
In baseline CMG, compared to control group, PNC group revealed statistically significant elevations in the intercontraction intervals (ICIs), number of nonvoiding contractions, baseline pressure, threshold pressure, bladder capacity, voided volumes, and postvoid residual. However, contraction amplitudes and voiding efficiency were significantly decreased. In the control group, compared with the baseline values, 10-mg/kg acotiamide resulted in statistically significant elevations in contraction amplitudes. Treatment with 100-mg/kg acotiamide led to statistically significant elevations in contraction amplitudes and decreases in ICI and bladder volume. In the PNC group, there were no statistically significant changes noted in CMG parameters after treatment with 10-mg/kg acotiamide (n=6). Compared with the baseline values, the administration of 100-mg/kg acotiamide significantly decreased ICI (1,025±186 seconds vs. 578±161 seconds; P=0.012), bladder capacity (1,841±323 µL vs. 871±174 µL, respectively; P=0.0059) and postvoid residual (223±46 µL vs. 44±22 µL, respectively; P=0.023), and increased contraction amplitudes (22.09±1.76 cm H2O vs. 43.84±6.87 cm H2O, respectively; P=0.012) and voiding efficiency (0.87±0.02 vs. 0.94±0.03, respectively; P=0.029).
Conclusions
Acotiamide showed effectiveness in the treatment of underactive bladder, possibly through activation of bladder afferent and detrusor activities.
4.Phenotypic diversity of hereditary sensory and autonomic neuropathy type IE: a case series and review of the literature
Noriyuki Miyaue ; Yuki Yamanishi ; Satoshi Tada ; Rina Ando ; Hayato Yabe ; Noriko Nishikawa ; Masahiro Nagai ; Hiroshi Takashima ; Masahiro Nomoto
Neurology Asia 2019;24(1):15-20
Objective: DNA methyltransferase 1 (DNMT1) is crucial to maintaining methylation during DNA
replication and DNA repair. DNMT1 mutations have been identified in two neurological syndromes,
including hereditary sensory and autonomic neuropathy type IE (HSAN IE) with dementia and
hearing loss and autosomal dominant cerebellar ataxia, deafness and narcolepsy. It is likely that
DNMT1 mutations lead to various symptoms of the central and peripheral nervous system. The aim
of this study was to examine the clinical characteristics, especially the initial symptoms, in the cases
of DNMT1 mutations. Methods: We investigated the clinical manifestation and examination findings
of four cases of HSAN IE from one family with the DNMT1 mutation c.1531Y>C (p.Try511His).
Results: All four cases exhibited sensory neuropathy, cerebellar ataxia, and hearing loss, all of which
were demonstrated by the audiograms. The initial symptoms of the four cases included hearing loss
(n=1), gait disturbance (n=1), and depressive mood (n=2). Depressive symptoms are reported in some
cases with HSAN IE, however, there are currently no published reports that describe them as primary
symptoms. The CSF orexin level was measured in three cases, revealing normal values in two cases
and intermediate values in one case, in which the patient exhibited rapid eye movement (REM) sleep
behavior disorder.
Conclusion: Our findings suggest that in cases with HSAN IE or the DNMT1 mutation, psychiatric
symptoms should be taken into account as one of the initial manifestations of the disease.
5.Multiple Papillary Fibroelastomas Involving All Four Heart Valves
Mizuki ANDO ; Yuya KISE ; Tatsuya MAEDA ; Hitoshi INAFUKU ; Satoshi YAMASHIRO ; Yukio KUNIYOSHI
Japanese Journal of Cardiovascular Surgery 2019;48(4):245-249
Papillary fibroelastoma (PFE) is a rare primary cardiac tumor that usually involves an aortic or mitral heart valve. We encountered a case of a 32-year-old woman, who presented with syncope and was found to have multiple PFEs involving all four heart valves during surgery. The echocardiography was performed and showed two mobile masses near the tricuspid and mitral valves. Moreover, the enhanced computed tomography (CT) showed thickened aortic cusps, which may indicate the possibility of heart tumor. Intraoperatively, we first found multiple tumors at each cusp of the aortic valve, ranging in size from 5 to 10 mm which were excised without injury of aortic cusps themselves. These showed a sea anemone-like appearance and were suspected to represent PFE. We then observed the tricuspid and mitral valves, and both valves showed tumors of similar appearance in each cusp. Furthermore, we found a tumor at the pulmonary valve, even though there had been no evidence of its presence on echocardiography or CT. We confirmed that these masses were PFEs by histological study after the operation. We should keep in mind that PFE can develop in multiple valves. To the best of our knowledge, this is the first description of multiple PFEs involving all four heart valves.
6.A Surgical Case for a Huge Pulmonary Artery Aneurysm 40 Years after Waterston Operation
Norihiro ANDO ; Tsuyoshi TACHIBANA ; Nobuyasu KATO ; Satoshi ARIMURA ; Hidetsugu ASAI ; Yasushige SHINGU ; Satoru WAKASA ; Hiroki KATO ; Tomonori OOKA ; Yoshiro MATSUI
Japanese Journal of Cardiovascular Surgery 2018;47(1):13-17
Surgical cases for pulmonary artery aneurysm after palliative operation for congenital heart disease are rare. A man in his 40s underwent Waterston operation (side-side anastomosis of the ascending aorta and right pulmonary artery) for pulmonary atresia and ventricular septal defect at the age of one. Medical follow-up was continued at a local clinic without definitive repair. He had complained of exertional dyspnea and cough for one month. CT scan on admission showed a large right pulmonary artery aneurysm and atelectasis of the right lung. An urgent operation was planned for the huge pulmonary artery aneurysm. Under cardiac arrest, the proximal end-to-side anastomosis to the aorta was conducted using a Y-shaped vascular prosthesis at the previous Waterston anastomosis. The peripheral pulmonary arteries were reconstructed by inclusion technique. Percutaneous cardiopulmonary support was necessary for one day after operation due to unstable hemodynamics. He was extubated on postoperative day (POD) 4 and transferred to our general ward on POD 5. He was discharged home on POD 38. He is now free from heart failure symptoms and recurrence of aneurysm one year after surgery. Careful follow-up is necessary for the dilatation of the pulmonary artery and aortic root. A definitive operation—Rastelli and closure of the ventricular septal defect—may be considered in the future if the pulmonary artery resistance is suitable for the repair.
9.Variety of the Wave Change in Compound Muscle Action Potential in an Animal Model.
Zenya ITO ; Shiro IMAGAMA ; Kei ANDO ; Akio MURAMOTO ; Kazuyoshi KOBAYASHI ; Tetsuro HIDA ; Kenyu ITO ; Yoshimoto ISHIKAWA ; Mikito TSUSHIMA ; Akiyuki MATSUMOTO ; Satoshi TANAKA ; Masayoshi MOROZUMI ; Yukihiro MATSUYAMA ; Naoki ISHIGURO
Asian Spine Journal 2015;9(6):952-957
STUDY DESIGN: Animal study. PURPOSE: To review the present warning point criteria of the compound muscle action potential (CMAP) and investigate new criteria for spinal surgery safety using an animal model. OVERVIEW OF LITERATURE: Little is known about correlation palesis and amplitude of spinal cord monitoring. METHODS: After laminectomy of the tenth thoracic spinal lamina, 2-140 g force was delivered to the spinal cord with a tension gage to create a bilateral contusion injury. The study morphology change of the CMAP wave and locomotor scale were evaluated for one month. RESULTS: Four different types of wave morphology changes were observed: no change, amplitude decrease only, morphology change only, and amplitude and morphology change. Amplitude and morphology changed simultaneously and significantly as the injury force increased (p<0.05) Locomotor scale in the amplitude and morphology group worsened more than the other groups. CONCLUSIONS: Amplitude and morphology change of the CMAP wave exists and could be the key of the alarm point in CMAP.
Action Potentials*
;
Animals*
;
Contusions
;
Gravitation
;
Laminectomy
;
Models, Animal*
;
Spinal Cord
10.Drastic Therapy for Listerial Brain Abscess Involving Combined Hyperbaric Oxygen Therapy and Antimicrobial Agents.
Keiichi NAKAHARA ; Satoshi YAMASHITA ; Katsumasa IDEO ; Seigo SHINDO ; Tomohiro SUGA ; Akihiko UEDA ; Shoji HONDA ; Tomoo HIRAHARA ; Masaki WATANABE ; Taro YAMASHITA ; Yasushi MAEDA ; Yasuhiro YONEMOCHI ; Tomohiro TAKITA ; Yukio ANDO
Journal of Clinical Neurology 2014;10(4):358-362
BACKGROUND: Listeria monocytogenes (L. monocytogenes) is a rare causative pathogen of brain abscess that is often found in immunocompromised patients. Although patients with supratentorial listerial abscesses showed a longer survival with surgical drainage, the standard therapy for patients with subtentorial lesions has not been established. CASE REPORT: We report herein a patient with supra- and subtentorial brain abscesses caused by L. monocytogenes infection. These abscesses did not respond to antibiotics, and his symptoms gradually worsened. Drainage was not indicated for subtentorial lesions, and the patient was additionally treated with hyperbaric oxygen therapy, which dramatically reduced the volume of abscesses and improved the symptoms. CONCLUSIONS: This is the first report of drastic therapy for a patient with listerial brain abscesses involving combined antibiotics and hyperbaric oxygen therapy. The findings suggest that hyperbaric oxygen therapy is a good option for treating patients with deep-seated listerial abscesses and for who surgical drainage is not indicated.
Abscess
;
Anti-Bacterial Agents
;
Anti-Infective Agents*
;
Brain Abscess*
;
Drainage
;
Humans
;
Hyperbaric Oxygenation*
;
Immunocompromised Host
;
Listeria monocytogenes


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