151 results on '"Takehiro Sejima"'
Search Results
2. Site-dependent differences in the composite fibers of male pelvic plexus branches: an immunohistochemical analysis of donated elderly cadavers
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Kuniyasu Muraoka, Shuichi Morizane, Keisuke Hieda, Masashi Honda, Takehiro Sejima, Gen Murakami, Shin-ichi Abe, and Atsushi Takenaka
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Pelvic autonomic nerve plexus ,Fiber composition ,Neuronal nitric oxide synthase ,Vasoactive intestinal polypeptide ,Tyrosine hydroxylase ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Abstract Background Although the pelvic autonomic plexus branches are considered to be a mixture of sympathetic and parasympathetic nerves, little is known regarding the composite fibers of the pelvic plexus branches. This study aimed to investigate the immunohistochemical features of sympathetic and parasympathetic nerves in the pelvic autonomic plexus branches. Methods Using 10 donated elderly male cadavers, the detailed topohistology of nerve fibers at and around the bladder, seminal vesicle, prostate, and rectum was examined. Neuronal nitric oxide synthase (nNOS) and vasoactive intestinal polypeptide (VIP) were used as parasympathetic nerve markers; tyrosine hydroxylase (TH) was used as a sympathetic nerve marker. The myenteric plexus of the colon was utilized as a positive control. Results Most nerve fibers in the bladder, seminal vesicle, prostate, and rectum were both nNOS- and TH-positive. Thus, pelvic plexus branches were classified into two types: 1) triple-positive mixed nerves (nNOS+, VIP+, TH+, thick myelinated fibers + or -) and 2) double-positive mixed nerves (nNOS+, VIP-, TH+, thick myelinated fibers + or -). Notably, triple-positive nerves were localized within the posterosuperior part of the plexus (near the rectum) and travelled anteroinferiorly toward the posterolateral corner of the prostate. The posteriorly and inferiorly located nerves were predominantly composed of parasympathetic, rather than sympathetic, fibers. In contrast, nerve fibers within and along the bladder and seminal vesicle contained either no or few VIP-positive nerves. These superiorly located nerves were characterized by clear sympathetic nerve dominance. Conclusions The nerves of the pelvic plexus branches were clearly classified into nerves around the bladder and seminal vesicle (VIP-negative) and nerves around the prostate (VIP-positive). Although nNOS- and VIP-positive nerve fibers are candidate cavernous nerves, cavernous nerve identity cannot be definitively concluded for these nerves in the periprostatic region.
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- 2018
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3. The Benefits of Adjuvant Chemotherapy for Upper Tract Urothelial Carcinoma Require at Least Three Cycles.
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Tetsuya Yumioka, Shuichi Morizane, Kuniyasu Muraoka, Hirofumi Oono, Tadahiro Isoyama, Naoyuki Sakaridani, Koji Ono, Takehiro Sejima, Hiroyuki Kadowaki, Katsuya Hikita, Masashi Honda, and Atsushi Takenaka
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ADJUVANT chemotherapy ,TRANSITIONAL cell carcinoma ,KIDNEY surgery ,EVIDENCE-based medicine ,TREATMENT effectiveness - Abstract
Background Upper urinary tract urothelial carcinoma (UTUC) is uncommon. In advanced cases, radical nephroureterectomy (RNU) alone is not curative, and recurrence and metastasis are likely to occur. Adjuvant chemotherapy (AC) is an evidence-based treatment. However, the optimal number of AC cycles is not clear. This multicenter study investigated the number of cycles required for the beneficial effects of AC in Japanese patients with UTUC. Methods Patients who were diagnosed with UTUC and underwent RNU at our hospital and affiliated hospitals from January 2010 to September 2020 were included in the study. Patients with pathological T3 or higher or lymph node metastasis were observed or given AC, and their responses were compared. The AC regimens included gemcitabine and cisplatin or carboplatin. Patients were also classified into two groups: the observation and two cycles of AC group and the three to four cycles of AC group. The survival curves for recurrencefree survival (RFS) and cancer-specific survival (CSS) were evaluated using Kaplan-Meier analyses. Results Of the 133 patients enrolled in the study, 24 received 2 cycles of AC, 37 received 3-4 cycles, and 72 were observed only. The 5-year RFS was 67.1% for the 3-4 cycles of AC group and 41.7% for the observation and two cycles of AC group. The 5-year CSS was 72.2% for the 3-4 cycles of AC group and 35.9% for the observation and two cycles of AC group. RFS and CSS were significantly longer in the 3-4 cycles of AC group compared to the observation and 2 cycles group (P = 0.048 and P = 0.005 respectively). Conclusion AC prolonged RFS and CSS in the realworld setting. However, at least three cycles of AC are required to achieve beneficial effects in patients with UTUC. [ABSTRACT FROM AUTHOR]
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- 2024
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4. Comprehensive Investigations of Multiple Factors That Are Related to Refractory Outcome in Urosepsis Patients
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Takehiro, Sejima, Toshihiko, Masago, Shuichi, Morizane, Masashi, Honda, and Atsushi, Takenaka
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sepsis ,General Medicine ,urinary tract infection ,urosepsis - Abstract
Background: Urosepsis is an acute life-threating disease, and some cases show refractory outcome to therapy. In an aging society of developed countries, characteristics of urosepsis are becoming complicated. We performed a comprehensive investigation regarding the clinical and social aspects that are related to refractory outcomes in urosepsis patients. Methods: The patient cohort consisted of 66 patients with urosepsis. Multiple factors from clinical and social aspects were reviewed retrospectively. Two categories of refractory outcomes were defined. One was afebrile resistance (AR); fever continued more than 7 days from the initiation of therapy. Another was discharge resistance (DR); hospitalization continued for more than 30 days. Logistic regression analyses were performed to identify significant factors that are related to the AR or DR. Results: Univariate analysis demonstrated that high score of Eastern Cooperative Oncology Group Performance Status (ECOG PS) (? 2) and Age-adjusted Charlson comorbidity index (CCI) (? 4), high serum C-reactive protein (CRP) level (? 14.9 mg/dL), and low serum albumin level (? 2.26 g/dL) were significantly related to AR. Univariate analysis results also revealed that high score of ECOG PS (? 2), high serum creatinine level (? 1.54 mg/dL) and vasopressor administration were significantly related to DR. Multivariate analyses demonstrated that low serum albumin level (? 2.26g/dL) was the only significant factor that was related to AR. In contrast, high score of ECOG PS (? 2) and high serum creatinine level (? 1.54 mg/dL) were significant factors that were related to DR. Conclusion: It is suggested that evaluating serum albumin levels is essential for the therapeutic first step because hypoalbuminemia was the significant factor that was related to obstruction to antipyresis. It is also suggested that the deterioration of patients’ activities of daily living and renal dysfunction might be the refractory factors for discharge from the hospital, which was the ultimate therapeutic goal.
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- 2022
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5. Xp11.2 translocation renal cell carcinoma with TFE3 gene fusion in the elderly: case report and literature review
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Chihiro Takahashi, Takuji Naka, Tadahiro Isoyama, Toshihiko Masago, Takehiro Sejima, Yuu Ohtani, Susumu Kobayakawa, Kenjirou Taniguchi, and Naoto Kuroda
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medicine.medical_specialty ,business.industry ,Pleural effusion ,Urology ,Case Report ,Ipilimumab ,medicine.disease ,Metastasis ,Axitinib ,Renal cell carcinoma ,Surgical oncology ,medicine ,Nivolumab ,business ,Kidney disease ,medicine.drug - Abstract
A 68-year-old man was followed up with chronic kidney disease. Follow-up CT incidentally detected a tumor at the left kidney and multiple small nodular shadows in the lungs bilaterally. The patient underwent needle biopsy and was diagnosed with Xp11.2 translocation renal cell carcinoma (RCC) pathologically. Hence, laparoscopic nephrectomy was performed. Fluorescence in situ hybridization analysis revealed a break-apart of the transcription factor E3 (TFE3) genes in the left tumor. After 2 months postoperatively, nivolumab and ipilimumab were administered thrice intravenously, considering the intermediate risk by the IMDC risk classification. However, pleural effusion occurred but was removed adequately. Lung metastasis decreased, but new metastasis occurred at the left iliopsoas muscle. Target therapy was performed with axitinib. Unfortunately, he died 6 months later postoperatively. These tumors commonly occur in children than in adults, and very rare in elderly patients. Xp11.2 translocation RCC in the elderly has a poorer prognosis than that in children. To date, no effective treatment for Xp11.2 translocation RCC has been established.
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- 2020
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6. ISOLATED ADRENOCORTICOTROPIC HORMONE DEFICIENCY ASSOCIATED WITH PEMBROLIZUMAB THERAPY IN A PATIENT WITH ADVANCED URETER CANCER : A CASE REPORT AND LITERATURE REVIEW.
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TOSHIHIKO MASAGO, TAKAHIRO HOSHINO, HIROSHI YAMAGUCHI, TAKEHIRO SEJIMA, KENICHI TAKEDA, and MOTOFUMI SASAKI
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Copyright of Nishinihon Journal of Urology is the property of West Japan Urological Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
7. Pathological eradication of recurrent metastatic renal cell carcinoma with sarcomatoid component by nivolumab plus ipilimumab combination therapy
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Takehiro Sejima, Atsushi Takenaka, Manabu Yoshida, Tetsuya Yumioka, Masashi Honda, Toshihiko Masago, Yoshitsugu Tajima, Yasunari Kawabata, and Takeshi Nishi
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medicine.medical_specialty ,Combination therapy ,business.industry ,medicine.medical_treatment ,Urology ,Ipilimumab ,Case Report ,medicine.disease ,Nephrectomy ,Metastasis ,Surgical oncology ,Renal cell carcinoma ,medicine ,Nivolumab ,business ,Pathological ,medicine.drug - Abstract
Although immuno-oncology combination therapy with nivolumab plus ipilimumab has recently shown a notable antitumor effect for first-line metastatic renal cell carcinoma, the eradication of the disease is extremely rare. Moreover, conventional treatments for renal cell carcinoma show little efficacy in the case of a poor prognostic pathological feature of sarcomatoid dedifferentiation. We report a case of pathological eradication of recurrent metastatic renal cell carcinoma with sarcomatoid component after laparoscopic radical nephrectomy by nivolumab plus ipilimumab combination therapy. A 57-year-old male patient received four cycles of nivolumab plus ipilimumab and thirty cycles of nivolumab for local recurrence and liver metastasis after laparoscopic radical nephrectomy for T3a renal cell carcinoma with sarcomatoid component. He underwent partial hepatectomy for the remaining small hepatic lesion after immuno-oncology therapy. Pathology of the surgical specimen showed no viable cancer cells. The patient was alive with no evidence of disease a year after partial hepatectomy. Our case encourages clinicians to achieve a second cure for patients with recurrent metastatic renal cell carcinoma after radical nephrectomy even though the resected kidney pathology showed sarcomatoid component.
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- 2021
8. Cross-Sectional Investigations of Pre- and Post-Operative Renal Global Function and Renal Parenchymal Volumetry in Both Partial and Radical Nephrectomy Utilizing Film-Based Technology
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Tetsuya Yumioka, Noriya Yamaguchi, Takehiro Sejima, Atsushi Takenaka, Katsuya Hikita, Masashi Honda, Shuichi Morizane, and Toshihiko Masago
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Original Paper ,medicine.medical_specialty ,business.industry ,Urology ,medicine.medical_treatment ,030232 urology & nephrology ,Compensatory renal hypertrophy ,Renal function ,Egfr decline ,Positive correlation ,Nephrectomy ,03 medical and health sciences ,0302 clinical medicine ,Oncology ,Reproductive Medicine ,030220 oncology & carcinogenesis ,Parenchyma ,Global function ,Medicine ,business ,Pre and post - Abstract
OBJECTIVES: To investigate pre- and post-operative renal global function and renal parenchymal volume (RPV) in both partial nephrectomy (PN) and radical nephrectomy (RN) utilizing film-based technology. PATIENTS AND METHODS: The patient cohort consisted of 81 and 82 cases with T1 tumors (≤ 7 cm) treated by PN and RN, respectively. Renal global function was assessed using the estimated glomerular filtration rate (eGFR), and RPV was measured using a Synapse Vincent volumetric analyzer which creates a reconstructed image from a computed tomography scan. Renal global function and RPV were evaluated pre-operatively and 6 months post-operatively. RESULTS: The percent eGFR decline of PN cases was significantly reduced compared with RN cases (p < 0.0001). Post-operative RPV of the contralateral side was significantly increased compared with pre-operative RPV (p < 0.0001) in RN cases. The percent change of the contralat-eral side RPV was slightly increased in RN compared with PN cases (p = 0.1881). A strong positive correlation was noted between post-operative eGFR and post-operative total RPV (r = 0.69, p < 0.0001), and a strong negative correlation was noted between percent eGFR decline and post-operative total RPV (r = −0.63, p < 0.0001). CONCLUSIONS: Prominent compensatory renal hypertrophy occurred within 6 months after RN. Post-operative renal functional outcome was closely correlated with the post-operative total RPV. In addition to RPV, further studies to unravel post-operative renal function from multifactorial aspects including surgical factors and intrinsic medical disease should be performed in the future.
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- 2019
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9. Disuse muscle atrophy-improving effect of ninjin'yoeito in a mouse model
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Seiwa Michihara, Li-Kun Han, Risa Takemoto, Ryuji Takahashi, and Takehiro Sejima
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Male ,medicine.medical_specialty ,Kampo ,Cell Cycle Proteins ,Hindlimb ,Cellular and Molecular Neuroscience ,Mice ,Endocrinology ,Internal medicine ,medicine ,Animals ,Muscle, Skeletal ,Adaptor Proteins, Signal Transducing ,Soleus muscle ,Mice, Inbred ICR ,Muscle Weakness ,Endocrine and Autonomic Systems ,business.industry ,TOR Serine-Threonine Kinases ,Muscle weakness ,General Medicine ,Organ Size ,Hindlimb Suspension ,medicine.disease ,Muscle atrophy ,Muscular Disorders, Atrophic ,Diet ,Muscular Atrophy ,Neurology ,Sarcopenia ,Medicine, Kampo ,medicine.symptom ,business ,Hypoactivity ,Drugs, Chinese Herbal - Abstract
Disuse syndrome indicates psychosomatic hypofunction caused by excess rest and motionless and muscle atrophy is termed disuse muscle atrophy. Disuse muscle atrophy-induced muscle weakness and hypoactivity further induces muscle atrophy, leading to a vicious cycle, and this is considered a factor causing secondary sarcopenia and subsequently frailty. Since frailty finally leads to a bedridden state requiring nursing, in facing a super-aging society, intervention for a risk factor of frailty, disuse muscle atrophy, is important. However, the main treatment of disuse muscle atrophy is physical therapy and there are fewer effective preventive and therapeutic drugs. The objective of this study was to search for Kampo medicine with a disuse muscle atrophy-improving effect. Ninjin'yoeito is classified as a qi-blood sohozai (dual supplement) in Chinese herbal medicine, and it has an action supplementing the spleen related to muscle. In addition, improvement of muscle mass and muscle weakness by ninjin'yoeito in a clinical study has been reported. In this study, the effect of ninjin'yoeito on disuse muscle atrophy was investigated. A disuse muscle atrophy model was prepared using male ICR mice. After surgery applying a ring for tail suspension, a 1-week recovery period was set. Ninjin'yoeito was administered by mixing it in the diet for 1 week after the recovery period, followed by tail suspension for 14 days. Ninjin'yoeito administration was continued until autopsy including the hindlimb suspension period. The mice were euthanized and autopsied immediately after completion of tail suspension, and the hindlimb muscles were collected. The food and water intakes during the hindlimb unloaded period, wet weight of the collected muscle, and muscle synthesis and muscle degradation-related factors in blood and muscle were evaluated. Ingestion of ninjin'yoeito inhibited tail suspension-induced reduction of the soleus muscle wet weight. In addition, an increase in the blood level of a muscle synthesis-related factor, IGF-1, and promotion of phosphorylation of mTOR and 4E-BP1 in the soleus muscle were observed. It was suggested that ninjin'yoeito has a disuse muscle atrophy-improving action. Promotion of the muscle synthesis pathway was considered the action mechanism of this.
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- 2021
10. Efficacy and safety of combination treatment with tadalafil and mirabegron for persistent storage symptoms despite tadalafil treatment in patients with benign prostatic hyperplasia
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T. Komi, Takehiro Sejima, K. Ono, Atsushi Takenaka, H. Matsuoka, N. Sakaridani, Masashi Honda, Y. Kimura, T. Isoyama, and C. Takahashi
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medicine.medical_specialty ,business.industry ,Urology ,Hyperplasia ,medicine.disease ,lcsh:Diseases of the genitourinary system. Urology ,lcsh:RC870-923 ,lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,lcsh:RC254-282 ,Tadalafil ,Combined treatment ,medicine ,In patient ,Mirabegron ,business ,medicine.drug - Published
- 2020
11. Effective Treatment of Upper Urinary Tract Malignancies Using Laparoscopic Surgery in Three Nonagenarians in Poor General Condition: Are They Too Old for Surgery?
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Atsushi Takenaka, Takehiro Sejima, Katsuya Hikita, Masashi Honda, and Shuichi Morizane
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Laparoscopic surgery ,medicine.medical_specialty ,business.industry ,Urology ,Mortality rate ,medicine.medical_treatment ,medicine ,Effective treatment ,Perioperative ,Surgical procedures ,business ,Upper urinary tract ,Surgery - Abstract
Backgrounds: Surgical procedures in the elderly are associated with higher perioperative morbidity and mortality rates than in younger patients. This is especially significant because elde...
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- 2018
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12. The Liverwort, Marchantia, Drives Alternative Electron Flow Using a Flavodiiron Protein to Protect PSI
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Moeko Tanaka, Shigeyuki Tsukamoto, Chikahiro Miyake, Takehiro Sejima, Ginga Shimakawa, and Kimitsune Ishizaki
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0106 biological sciences ,0301 basic medicine ,Photosynthetic reaction centre ,P700 ,Photosystem II ,Physiology ,Cytochrome b6f complex ,Plant Science ,Biology ,Photosystem I ,Photosynthesis ,biology.organism_classification ,01 natural sciences ,03 medical and health sciences ,Marchantia polymorpha ,030104 developmental biology ,Botany ,Genetics ,Biophysics ,Chlorophyll fluorescence ,010606 plant biology & botany - Abstract
The diffusion efficiency of oxygen in the atmosphere, like that of CO2, is approximately 104 times greater than that in aqueous environments. Consequently, terrestrial photosynthetic organisms need mechanisms to protect against potential oxidative damage. The liverwort Marchantia polymorpha, a basal land plant, has habitats where it is exposed to both water and the atmosphere. Furthermore, like cyanobacteria, M. polymorpha has genes encoding flavodiiron proteins (FLV). In cyanobacteria, FLVs mediate oxygen-dependent alternative electron flow (AEF) to suppress the production of reactive oxygen species. Here, we investigated whether FLVs are required for the protection of photosynthesis in M. polymorpha A mutant deficient in the FLV1 isozyme (ΔMpFlv1) sustained photooxidative damage to photosystem I (PSI) following repetitive short-saturation pulses of light. Compared with the wild type (Takaragaike-1), ΔMpFlv1 showed the same photosynthetic oxygen evolution rate but a lower electron transport rate during the induction phase of photosynthesis. Additionally, the reaction center chlorophyll in PSI, P700, was highly reduced in ΔMpFlv1 but not in Takaragaike-1. These results indicate that the gene product of MpFlv1 drives AEF to oxidize PSI, as in cyanobacteria. Furthermore, FLV-mediated AEF supports the production of a proton motive force to possibly induce the nonphotochemical quenching of chlorophyll fluorescence and suppress electron transport in the cytochrome b6/f complex. After submerging the thalli, a decrease in photosystem II operating efficiency was observed, particularly in ΔMpFlv1, which implies that species living in these sorts of habitats require FLV-mediated AEF.
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- 2017
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13. Comprehensive Analysis of Factors Affecting Post-partial Nephrectomy Renal Global Function
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Masashi Honda, Tetsuya Yumioka, Takehiro Sejima, Noriya Yamaguchi, Hideto Iwamoto, Atsushi Takenaka, Shuichi Morizane, and Toshihiko Masago
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medicine.medical_specialty ,Univariate analysis ,Proteinuria ,business.industry ,medicine.medical_treatment ,030232 urology & nephrology ,Urology ,Glomerulosclerosis ,Renal function ,General Medicine ,Logistic regression ,medicine.disease ,Nephrectomy ,03 medical and health sciences ,0302 clinical medicine ,030220 oncology & carcinogenesis ,Parenchyma ,medicine ,Biomarker (medicine) ,medicine.symptom ,business - Abstract
BACKGROUND To explore new factors that are predictive of post-partial nephrectomy (PN) renal global function, we analyzed various clinico-pathological factors with a special focus on renal volume measured via three-dimensional imaging technology and histopathological parameters in non-neoplastic parenchyma. METHODS Estimated glomerular filtration rate (eGFR) and computed tomography (CT) scan were examined pre- and 6 months. post-operatively in 52 patients treated by PN. The post-operative percent eGFR decline was employed as the measure of global renal functional deterioration. The novel factors analyzed included the percent renal parenchymal volume decline of the diseased side, contralateral and bilateral sides and the global glomerulosclerosis (GS) extent in non-neoplastic parenchyma. Renal parenchymal volumetry by CT scan was performed using SYNAPSE VINCENT (Fujifilm). Additional factors analyzed included patient demographics and comorbidities, surgical factors and tumor pathology. All factors demonstrating significant tendencies (P < 0.1) in univariate analyses were subjected to multivariate logistic regression analysis. RESULTS Two groups were categorized according to the degree of eGFR decline. Groups A and B were categorized as less than 15% and greater than 15% decline, respectively. Pre-operative eGFR was significantly lower in group B than in group A. Greater than 10% global GS extent in non-neoplastic parenchyma, male gender and proteinuria were significantly more frequent in in group B than in group A. The renal volume change was not statistically significant. In multivariate logistic regression analysis, greater than 10% global GS extent in non-neoplastic parenchyma was the sole independent affecting factor for Group B. CONCLUSION Our study suggested that host factors rather than surgical factors may be useful for the prediction of post-PN renal global function. The evaluation of the global GS extent in non-neoplastic parenchyma is a promising biomarker of post-PN renal global function.
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- 2017
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14. Flutamide as an Alternative Anti-androgen Agent and Predictor of the Efficacy of Novel Androgen Receptor-targeted Agents
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Shuichi Morizane, Atsushi Takenaka, Hideto Iwamoto, Takehiro Sejima, Tetsuya Yumioka, Katsuya Hikita, Masashi Honda, and Noriya Yamaguchi
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Oncology ,Male ,Cancer Research ,medicine.medical_specialty ,medicine.drug_class ,Anti-Androgen ,Abiraterone Acetate ,Docetaxel ,urologic and male genital diseases ,Flutamide ,03 medical and health sciences ,chemistry.chemical_compound ,Prostate cancer ,0302 clinical medicine ,Internal medicine ,Antineoplastic Combined Chemotherapy Protocols ,Nitriles ,Phenylthiohydantoin ,medicine ,Enzalutamide ,Humans ,Aged ,Aged, 80 and over ,business.industry ,Therapeutic effect ,Androgen Antagonists ,General Medicine ,Middle Aged ,Prostate-Specific Antigen ,medicine.disease ,Androgen ,Androgen receptor ,Prostatic Neoplasms, Castration-Resistant ,Treatment Outcome ,chemistry ,Receptors, Androgen ,030220 oncology & carcinogenesis ,Benzamides ,business ,medicine.drug - Abstract
Background/aim There are few reports that verify the relationship between the therapeutic effects of flutamide and novel androgen receptor-targeted agents. We aimed to evaluate the benefits of flutamide as an alternative anti-androgen agent and its effects on the efficacy of novel androgen receptor-targeted agents. Patients and methods Patients with castration-resistant prostate cancer on novel androgen receptor-targeted agents without prior docetaxel therapy were included. Changes in prostate-specific antigen (PSA) level were recorded. Results Patients who responded well to flutamide (Flutamide effective) following initial maximum androgen blockade (MAB) showed significantly higher changes in serum PSA levels (p=0.039) and PSA-progression-free survival (PFS) rate (p=0.016) following enzalutamide therapy compared to those who did not respond well to flutamide. Multivariate analysis showed that the factor of Flutamide effective was significantly associated with a good PSA-PFS rate following enzalutamide therapy (HR=7.36, 95%CI=1.4-38.71, p=0.018). Conclusion Patients showing good response to flutamide following initial MAB may achieve a satisfactory PSA-PFS rate with subsequent enzalutamide therapy.
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- 2019
15. Superoxide and Singlet Oxygen Produced within the Thylakoid Membranes Both Cause Photosystem I Photoinhibition
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Shigeo Takumi, Masaki Hashiguchi, Takehiro Sejima, Chikahiro Miyake, and Daisuke Takagi
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0106 biological sciences ,0301 basic medicine ,chemistry.chemical_classification ,Reactive oxygen species ,Photoinhibition ,Physiology ,Superoxide ,food and beverages ,Plant Science ,Biology ,Photochemistry ,Photosynthesis ,Photosystem I ,01 natural sciences ,Chloroplast ,Superoxide dismutase ,03 medical and health sciences ,chemistry.chemical_compound ,030104 developmental biology ,chemistry ,Thylakoid ,Genetics ,Biophysics ,biology.protein ,010606 plant biology & botany - Abstract
Photosystem I (PSI) photoinhibition suppresses plant photosynthesis and growth. However, the mechanism underlying PSI photoinhibition has not been fully clarified. In this study, in order to investigate the mechanism of PSI photoinhibition in higher plants, we applied repetitive short-pulse (rSP) illumination, which causes PSI-specific photoinhibition in chloroplasts isolated from spinach leaves. We found that rSP treatment caused PSI photoinhibition, but not PSII photoinhibition in isolated chloroplasts in the presence of O2. However, chloroplastic superoxide dismutase and ascorbate peroxidase activities failed to protect PSI from its photoinhibition. Importantly, PSI photoinhibition was largely alleviated in the presence of methyl viologen, which stimulates the production of reactive oxygen species (ROS) at the stromal region by accepting electrons from PSI, even under the conditions where CuZn-superoxide dismutase and ascorbate peroxidase activities were inactivated by KCN. These results suggest that the ROS production site, but not the ROS production rate, is critical for PSI photoinhibition. Furthermore, we found that not only superoxide (O2−) but also singlet oxygen (1O2) is involved in PSI photoinhibition induced by rSP treatment. From these results, we suggest that PSI photoinhibition is caused by both O2− and 1O2 produced within the thylakoid membranes when electron carriers in PSI become highly reduced. Here, we show, to our knowledge, new insight into the PSI photoinhibition in higher plants.
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- 2016
16. Post-fertilization effect of bilateral primary testicular damage induced by unilateral cryptorchidism in the rat model
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Motoaki Saito, Shuhei Tomita, Takehiro Sejima, Panagiota Tsounapi, Nikolaos Sofikitis, Katsuya Hikita, Masashi Honda, Atsushi Takenaka, F. Dimitriadis, Shogo Shimizu, and Kuniyasu Muraoka
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Male ,medicine.medical_specialty ,Taurine ,Urology ,Endocrinology, Diabetes and Metabolism ,medicine.medical_treatment ,Glycine ,Embryonic Development ,Biology ,Unilateral cryptorchidism ,medicine.disease_cause ,Antioxidants ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Endocrinology ,Internal medicine ,Cryptorchidism ,Testis ,medicine ,Animals ,Rats, Wistar ,Saline ,Sulfonamides ,030219 obstetrics & reproductive medicine ,TUNEL assay ,Sivelestat ,Malondialdehyde ,Rats ,Fertility ,Animals, Newborn ,Reproductive Medicine ,chemistry ,030220 oncology & carcinogenesis ,Female ,Spermatogenesis ,Oxidative stress - Abstract
Cryptorchidism, a common anomaly of the male genitalia, affects 2-4% of male infants. The post-fertilization effects of unilateral cryptorchidism model in the rat and the effects of antioxidant treatment were investigated. Six-week-old male Wistar rats were randomly separated into four groups. Unilateral cryptorchidism was induced in the right testis of three groups. One group was treated with saline intraperitoneally (i.p.) (Crypto), one group was treated with taurine (500 mg/kg, i.p.; Tau), and another group was treated with sivelestat (15 mg/kg i.p.; Siv). The control group was treated with saline i.p. The treatment was daily for 8 weeks. Five days before sacrifice, mating studies were performed. Body, testicular, and epididymal weights were recorded. Malondialdehyde (MDA) levels in the seminal vesicular fluid (SVF) were measured. Testicular levels of MDA and 8-hydroxy-2'-deoxyguanosine (8-OHdG) were determined bilaterally. TUNEL assay was used to examine DNA fragmentation bilaterally. Histological examination and the Johnsen score were used to evaluate morphological testicular alterations. The Crypto group demonstrated significantly lower right testicular and epididymal weights, significantly increased SVF-MDA levels, testicular MDA and 8-OHdG levels, and the apoptotic score bilaterally compared to the controls. Furthermore, histological evaluation revealed significantly reduced spermatogenesis and mild injury to the cryptorchid testes compared to the control. Treatment with both taurine and sivelestat significantly reduced SVF-MDA levels, testicular MDA, 8-OHdG, and apoptosis bilaterally compared to the Crypto group. Antioxidant treatment was unable to ameliorate spermatogenesis. Newborns delivered by females that mated with Crypto-males had significantly lower body weight compared with the respective animals from the control, Tau and Siv groups. The present study demonstrated that unilateral cryptorchidism-induced testicular damage can significantly affect the contralateral testis as well having further deleterious post-fertilization effect on the development of newborns. Treatment with antioxidants can partially improve the testicular damage bilaterally with beneficial effects for the newborns.
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- 2016
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17. Vesicovascular reflexes in the spontaneously hypertensive rat
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Takehiro Sejima, Kuniyasu Muraoka, Katsuya Hikita, Masashi Honda, Bunya Kawamoto, Youichirou Higashi, Takahiro Shimizu, Atsushi Takenaka, Shogo Shimizu, and Motoaki Saito
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Male ,medicine.medical_specialty ,Epinephrine ,Nifedipine ,Vasodilator Agents ,Blood Pressure ,Pulse Wave Analysis ,030204 cardiovascular system & hematology ,General Biochemistry, Genetics and Molecular Biology ,Norepinephrine (medication) ,Norepinephrine ,03 medical and health sciences ,0302 clinical medicine ,Spontaneously hypertensive rat ,Rats, Inbred SHR ,Internal medicine ,Reflex ,Animals ,Medicine ,cardiovascular diseases ,Rats, Wistar ,General Pharmacology, Toxicology and Pharmaceutics ,Antihypertensive Agents ,medicine.diagnostic_test ,business.industry ,Myocardium ,Cystometry ,General Medicine ,Atherosclerosis ,Rats ,Blood pressure ,Valsartan ,Hypertension ,Cardiology ,Blood Vessels ,business ,030217 neurology & neurosurgery ,medicine.drug - Abstract
Aims We investigated the effects of hypertension and acute blood pressure changes on rats' vesicovascular reflexes (VVRs). Main methods Twelve-week-old male Wistar rats and spontaneously hypertensive rats (SHRs) were anesthetized with urethane, and underwent real-time cystometry and blood pressure monitoring. The SHRs were administered nifedipine or valsartan intravenously. The Wistar rats were administered intravenous noradrenaline continuously. The intercontraction intervals, maximum detrusor pressures, blood pressure during the voiding and the urine storage phases, blood pressure elevations associated with the VVRs, and arterial pulses were assessed. Plasma adrenaline and noradrenaline concentrations were measured using HPLC. The degree of atherosclerosis was assessed histologically based on the aortic wall thickness. Key findings Blood pressure elevations associated with the voiding reflexes were significantly lower and intercontraction intervals were significantly shorter in the SHRs compared with the Wistar rats. Although nifedipine and valsartan reduced the systolic blood pressure and noradrenaline increased the systolic blood pressure, they failed to alter the blood pressure elevations associated with the VVRs and the intercontraction intervals. No significant differences occurred with respect to the maximum detrusor pressures among the experimental groups. The reflected waves' shapes were normal in the Wistar rats, but they almost disappeared in the SHRs. The aortic walls were significantly thicker in SHRs compared with those in Wistar rats. Significance The blood pressure elevations associated with the VVRs were lower in the SHRs than in the Wistar rats. Acute blood pressure reductions failed to ameliorate the blood pressure elevations associated with VVRs in the SHRs.
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- 2016
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18. Site-dependent differences in the composite fibers of male pelvic plexus branches: an immunohistochemical analysis of donated elderly cadavers
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Keisuke Hieda, Shuichi Morizane, Kuniyasu Muraoka, Gen Murakami, Takehiro Sejima, Atsushi Takenaka, Masashi Honda, and Shinichi Abe
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Male ,0301 basic medicine ,Vasoactive intestinal polypeptide ,Urology ,Urinary Bladder ,Vasoactive intestinal peptide ,030232 urology & nephrology ,Rectum ,Nitric Oxide Synthase Type I ,lcsh:RC870-923 ,medicine.nerve ,03 medical and health sciences ,Nerve Fibers ,0302 clinical medicine ,Seminal vesicle ,Prostate ,Cadaver ,Humans ,Medicine ,Myenteric plexus ,Aged ,Neuronal nitric oxide synthase ,Aged, 80 and over ,Plexus ,Hypogastric Plexus ,Tyrosine hydroxylase ,business.industry ,Pelvic plexus ,Seminal Vesicles ,General Medicine ,Anatomy ,Middle Aged ,Fiber composition ,lcsh:Diseases of the genitourinary system. Urology ,medicine.anatomical_structure ,Reproductive Medicine ,Pelvic autonomic nerve plexus ,030101 anatomy & morphology ,business ,Vasoactive Intestinal Peptide ,Research Article - Abstract
Background Although the pelvic autonomic plexus branches are considered to be a mixture of sympathetic and parasympathetic nerves, little is known regarding the composite fibers of the pelvic plexus branches. This study aimed to investigate the immunohistochemical features of sympathetic and parasympathetic nerves in the pelvic autonomic plexus branches. Methods Using 10 donated elderly male cadavers, the detailed topohistology of nerve fibers at and around the bladder, seminal vesicle, prostate, and rectum was examined. Neuronal nitric oxide synthase (nNOS) and vasoactive intestinal polypeptide (VIP) were used as parasympathetic nerve markers; tyrosine hydroxylase (TH) was used as a sympathetic nerve marker. The myenteric plexus of the colon was utilized as a positive control. Results Most nerve fibers in the bladder, seminal vesicle, prostate, and rectum were both nNOS- and TH-positive. Thus, pelvic plexus branches were classified into two types: 1) triple-positive mixed nerves (nNOS+, VIP+, TH+, thick myelinated fibers + or -) and 2) double-positive mixed nerves (nNOS+, VIP-, TH+, thick myelinated fibers + or -). Notably, triple-positive nerves were localized within the posterosuperior part of the plexus (near the rectum) and travelled anteroinferiorly toward the posterolateral corner of the prostate. The posteriorly and inferiorly located nerves were predominantly composed of parasympathetic, rather than sympathetic, fibers. In contrast, nerve fibers within and along the bladder and seminal vesicle contained either no or few VIP-positive nerves. These superiorly located nerves were characterized by clear sympathetic nerve dominance. Conclusions The nerves of the pelvic plexus branches were clearly classified into nerves around the bladder and seminal vesicle (VIP-negative) and nerves around the prostate (VIP-positive). Although nNOS- and VIP-positive nerve fibers are candidate cavernous nerves, cavernous nerve identity cannot be definitively concluded for these nerves in the periprostatic region.
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- 2018
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19. Post-illumination transient O2-uptake is driven by photorespiration in tobacco leaves
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Amane Makino, Chikahiro Miyake, Hiroshi Fukayama, Takehiro Sejima, Ginga Shimakawa, Daisuke Takagi, Hitomi Hanawa, and Yuji Suzuki
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0106 biological sciences ,0301 basic medicine ,Photosystem II ,biology ,Physiology ,Nicotiana tabacum ,Ribulose ,Quantum yield ,Cell Biology ,Plant Science ,General Medicine ,Photosynthesis ,biology.organism_classification ,01 natural sciences ,Pyruvate carboxylase ,03 medical and health sciences ,chemistry.chemical_compound ,030104 developmental biology ,chemistry ,Botany ,Genetics ,Biophysics ,Photorespiration ,Chlorophyll fluorescence ,010606 plant biology & botany - Abstract
This study aims to elucidate the molecular mechanism for the transient increase in the O2 -uptake rate in tobacco (Nicotiana tabacum cv Xanthi) leaves after turning off actinic lights (ALs). The photosynthetic O2 evolution rate reaches a maximum shortly after the onset of illumination with ALs and then decreases to zero in atmospheric CO2 /O2 conditions. After turning off the ALs, tobacco leaves show a transient increase in the O2 -uptake rate, the post-illumination transient O2 -uptake, and thereafter, the O2 -uptake rate decreases to the level of the dark-respiration rate. Photosynthetic linear electron flow, evaluated as the quantum yield of photosystem II [Y(II)], maintained a steady-state value distinct from the photosynthetic O2 -evolution rate. In high-[CO2 ] conditions, the photosynthetic O2 -evolution rate and Y(II) showed a parallel behavior, and the post-illumination transient O2 -uptake was suppressed. On the other hand, in maize leaves (a C4 plant), even in atmospheric CO2 /O2 conditions, Y(II) paralleled the photosynthetic O2 -evolution rate and the post-illumination transient O2 -uptake was suppressed. Hypothesizing that the post-illumination transient O2 -uptake is driven by C3 plant photorespiration in tobacco leaves, we calculated both the ribulose 1,5-bisphosphate carboxylase- and oxygenase-rates (Vc and Vo) from photosynthetic O2 -evolution and the post-illumination transient O2 -uptake rates. These values corresponded to those estimated from simultaneous chlorophyll fluorescence/O2 -exchange analysis. Furthermore, the H+ -consumption rate for ATP synthesis in both photosynthesis and photorespiration, calculated from both Vc and Vo that were estimated from chlorophyll fluorescence/CO2 -exchange analysis, showed a positive linear relationship with the dissipation rate of the electrochromic shift signal. Thus, these findings support our hypothesis.
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- 2015
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20. Characterization of mild and severe post-radical nephrectomy renal functional deterioration utilizing histopathological evaluation of non-neoplastic nephrectomized renal parenchyma
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Noriya Yamaguchi, Toshihiko Masago, Masashi Honda, Hideto Iwamoto, Shuichi Morizane, Atsushi Takenaka, Takehiro Sejima, and Tetsuya Yumioka
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Adult ,Male ,medicine.medical_specialty ,Arteriosclerosis ,medicine.medical_treatment ,Kidney Glomerulus ,030232 urology & nephrology ,Urology ,Renal function ,Nephrectomy ,03 medical and health sciences ,Glomerulonephritis ,0302 clinical medicine ,Renal cell carcinoma ,Surgical oncology ,Humans ,Medicine ,Postoperative Period ,Renal Insufficiency ,Carcinoma, Renal Cell ,Survival rate ,Aged ,Aged, 80 and over ,business.industry ,Hematology ,General Medicine ,Middle Aged ,Prognosis ,medicine.disease ,Kidney Neoplasms ,Survival Rate ,Oncology ,Cardiovascular Diseases ,030220 oncology & carcinogenesis ,Female ,Surgery ,Histopathology ,business ,Glomerular Filtration Rate - Abstract
We investigated factors affecting mild (MRFD) and severe renal functional deterioration (SRFD) after radical nephrectomy with a special focus on the histopathology of nephrectomized non-neoplastic renal parenchyma. MRFD was defined as a postoperative decline of percent estimated glomerular filtration rate (eGFR) lower than the value of the mean minus standard deviation (SD). SRFD was defined as a rate greater than the value of the mean plus SD. The histopathological factors of global glomerulosclerosis (GS) and arteriosclerosis in non-neoplastic renal parenchyma and multiple clinical factors were analyzed to determine whether they affected postoperative renal functional deterioration in 100 renal cell carcinoma cases. The prognoses, including non-cancer mortality, were collected from long-term follow-up data. A higher preoperative eGFR and a higher global GS extent in non-neoplastic renal parenchyma were independently associated with MRFD and SRFD, respectively. The cardiovascular disease-specific survival rates of the SRFD group and the group with global GS extent >14 % were significantly worse than those of their counterparts. This is the first report to identify global GS extent in nephrectomized non-neoplastic renal parenchyma as a factor affecting the development of life-threatening post-nephrectomy renal functional deterioration. Moreover, we are the first to advocate the importance of the characterization of favorable post-nephrectomy renal functional deterioration. The identification of MRFD and SRFD by histopathological evaluation of nephrectomized non-neoplastic renal parenchyma will contribute to personalized postoperative follow-up. It may improve follow-up of individual patients with SRFD by permitting collaboration with other clinical departments such as cardiology.
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- 2015
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21. The Utility of the Remnant Kidney Volume/Body Surface Area Ratio and Tumor Diameter as Predictors of Postoperative Degree of Renal Functional Decline in Patients With Renal Cell Carcinoma Treated by Radical Nephrectomy
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Atsushi Takenaka, Takehiro Sejima, Hideto Iwamoto, Koji Ono, Tsutomu Koumi, Toshihiko Masago, Noriya Yamaguchi, Shuichi Morizane, and Masashi Honda
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medicine.medical_specialty ,Body Surface Area ,Urology ,medicine.medical_treatment ,Renal function ,Kidney ,Nephrectomy ,Postoperative Complications ,Renal cell carcinoma ,medicine ,Carcinoma ,Humans ,Postoperative Period ,Kidney surgery ,Carcinoma, Renal Cell ,Retrospective Studies ,Body surface area ,business.industry ,Retrospective cohort study ,Organ Size ,Prognosis ,medicine.disease ,Kidney Neoplasms ,Tumor Burden ,Surgery ,Cardiovascular Diseases ,Histopathology ,business ,Glomerular Filtration Rate - Abstract
Objective To characterize the preoperative factors affecting renal cell carcinoma patients as predictive of post–radical nephrectomy (RN) mild (M-decline) or severe (S-decline) renal functional decline and to elucidate the histopathologic features of the resected normal kidney cortex, as well as the occurrence of cardiovascular disease (CVD) in both M-decline and S-decline patients. Materials and Methods M-decline and S-decline were categorized as a percentage of postoperative estimated glomerular filtration rate decline of 40, respectively. The preoperative factors analyzed were patient demographics, comorbidities, and radiographic findings, including remnant kidney status and tumor size. The factors based on postoperative information analyzed were tumor and normal cortex pathology and CVD events. Results In 175 patient cohort, 21 and 32 cases were categorized as M-decline and S-decline, respectively. Absence of comorbidities, larger remnant kidney volume (RKV)/body surface area (BSA) ratio, and larger tumor diameter were significantly predictive of M-decline, whereas smaller tumor diameter was significantly predictive of S-decline. The global glomerulosclerosis extent in nephrectomized normal cortex of S-decline cases was significantly higher than in other types of cases. No CVD event was observed in M-decline cases. Conclusion This is the first report to identify the RKV/BSA ratio as a promising predictor of post-RN degree of renal functional decline. Post-RN prevention of life-threatening outcomes according to preoperative and postoperative information, including the degree of post-RN renal functional decline and histopathology of the nephrectomized normal cortex, should be considerable in future urological tasks.
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- 2015
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22. Risk stratification model, including preoperative serum C-reactive protein and estimated glomerular filtration rate levels, in patients with upper urinary tract urothelial carcinoma undergoing radical nephroureterectomy
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Shuichi Morizane, Takehiro Sejima, Atsushi Takenaka, Tetsuya Yumioka, Masashi Honda, Toshihiko Masago, and Noriya Yamaguchi
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Male ,Nephrology ,Oncology ,Urologic Neoplasms ,medicine.medical_specialty ,Time Factors ,Multivariate analysis ,Urology ,medicine.medical_treatment ,Renal function ,Cystectomy ,Nephrectomy ,Risk Assessment ,Internal medicine ,Biomarkers, Tumor ,medicine ,Humans ,In patient ,Neoadjuvant therapy ,Aged ,Retrospective Studies ,Upper urinary tract ,Carcinoma, Transitional Cell ,biology ,business.industry ,C-reactive protein ,Prognosis ,C-Reactive Protein ,Preoperative Period ,biology.protein ,Female ,Ureter ,Positive Surgical Margin ,business ,Follow-Up Studies ,Glomerular Filtration Rate - Abstract
To investigate the prognostic indicators, including clinicopathological and preoperative hematological factors, in patients undergoing radical nephroureterectomy (RNU) for upper urinary tract urothelial carcinoma (UTUC), and to develop a prognostic factor-based risk stratification model.The clinicopathological data and preoperative parameters were collected from 345 UTUC patients treated with RNU without neoadjuvant therapy, retrospectively. The prognostic values of preoperative hematological parameters and clinicopathological factors were evaluated. Then, a risk stratification model was developed to predict poor survival after RNU using the regression coefficients of multivariate analysis.In multivariate analysis, high serum C-reactive protein (CRP) levels (≥0.5 mg/dl), low estimated glomerular filtration rate (eGFR) levels (50 ml/min/1.73 m(2)), Eastern Cooperative Oncology Group Performance status ≥1, number of tumor foci1, tumor grade (G3), positive LN, and positive surgical margin were independent factors predicting poor cancer-specific survival (CSS). Patients were stratified into three groups, and the risk stratification model revealed significant differences in CSS between the three subgroups. The 5-year CSS in patients at low, intermediate, and high risk was 92.7, 75.4, and 31.5 %, respectively.This study indicates that preoperative hematological markers, such as low eGFR and high CRP levels predict a poor survival in patients with UTUC. Our risk stratification model may provide physicians with useful prognostic information for identifying patients who may be candidates for multimodal treatment.
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- 2015
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23. High neutrophil-to-lymphocyte ratio predicts poor clinical outcome in patients with castration-resistant prostate cancer treated with docetaxel chemotherapy
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Atsushi Takenaka, Akihisa Yao, Toshihiko Masago, Shuichi Morizane, Hideto Iwamoto, Takehiro Sejima, and Masashi Honda
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Male ,Oncology ,medicine.medical_specialty ,Neutrophils ,Urology ,Antineoplastic Agents ,Docetaxel ,Kaplan-Meier Estimate ,Disease-Free Survival ,Prostate cancer ,Predictive Value of Tests ,Internal medicine ,medicine ,Humans ,Lymphocyte Count ,Lymphocytes ,Progression-free survival ,Neutrophil to lymphocyte ratio ,Aged ,Retrospective Studies ,Aged, 80 and over ,business.industry ,Proportional hazards model ,Hazard ratio ,Retrospective cohort study ,Middle Aged ,Prostate-Specific Antigen ,medicine.disease ,Confidence interval ,Survival Rate ,Prostatic Neoplasms, Castration-Resistant ,Taxoids ,business ,medicine.drug - Abstract
Objective To evaluate the prognostic significance of the neutrophil-to-lymphocyte ratio in patients receiving chemotherapy with docetaxel for castration-resistant prostate cancer. Methods A total of 57 castration-resistant prostate cancer patients treated between 2009 and 2014 were included in the present retrospective study. All patient data, including clinicopathological factors, were assessed. Univariate and multivariate Cox regression models were used to predict overall survival and progression-free survival after chemotherapy initiation. Results The median overall survival and progression-free survival were determined as 19.0 months (range 1–61 months) and 10.0 months (range 1–56 months), respectively. The cut-off level of the neutrophil-to-lymphocyte ratio was set as the median value of 3.5 among all patients in this study. In Kaplan–Meier analysis, the median overall survival and progression-free survival were shorter in patients with a high neutrophil-to-lymphocyte ratio compared with those with a low neutrophil-to-lymphocyte ratio (15 vs 20 months, P = 0.0125; and 9.5 vs 15 months, P = 0.0132, respectively). The overall survival and progression-free survival periods in patients with a high neutrophil-to-lymphocyte ratio were significantly shorter than those of patients with a low neutrophil-to-lymphocyte ratio (P = 0.0178 and 0.0176, respectively). In the multivariate analysis, a high neutrophil-to-lymphocyte ratio was an independent predictor of overall survival and progression-free survival (hazard ratio 2.728, 95% confidence interval 1.05–7.09, P = 0.039; and hazard ratio 2.376, 95% confidence interval 1.12–5.06, P = 0.024, respectively). Conclusion The present study results suggest that the neutrophil-to-lymphocyte ratio is a useful prognostic factor in patients with castration-resistant prostate cancer treated by docetaxel chemotherapy. These findings might be useful in determining treatment strategies in the future.
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- 2015
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24. Treatment of Ureterosciatic Hernia with a Ureteral Stent
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Atsushi Takenaka, Koji Yanagi, Akinobu Kan, and Takehiro Sejima
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medicine.medical_specialty ,Ureteral stent ,medicine.medical_treatment ,Computed tomography ,Greater sciatic foramen ,Ureter ,medicine ,Hernia ,medicine.diagnostic_test ,business.industry ,Stent ,Urography ,Ureterosciatic hernia ,medicine.disease ,Surgery ,surgical procedures, operative ,medicine.anatomical_structure ,Nephrology ,Vomiting ,Retrograde ureteral ,Radiology ,Published online: March, 2015 ,medicine.symptom ,business ,Pyelogram - Abstract
A 92-year-old woman was referred to our hospital from a family practice with the chief of complaint of vomiting. Subsequent computed tomography imaging revealed left hydroureteronephrosis without clear evidence of ureteral stones or ureteral tumors and that the lower part of the ureter was shifted to the outside of the cavum pelvis minor from the greater sciatic foramen. Retrograde pyelography was performed, and the shadow of a mass, which constricted and obstructed the distal left ureter, was observed. The patient was diagnosed with ureterosciatic hernia, and a left retrograde ureteral stent was indwelled and the hernia was repaired. Cases of ureterosciatic hernia are very rare. We describe one case of ureterosciatic hernia and review the relevant literature.
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- 2015
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25. The significance of predictable traumatic area by renorrhaphy in the prediction of postoperative ipsilateral renal function
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Toshihiko, Masago, Noriya, Yamaguchi, Hideto, Iwamoto, Shuichi, Morizane, Katsuya, Hikita, Masashi, Honda, Takehiro, Sejima, and Atsushi, Takenaka
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Original Paper ,traumatic region ,virtual system ,robot-assisted partial nephrectomy - Abstract
Introduction To determine the relationship between the actual renal function loss and volume loss in robot-assisted partial nephrectomy (RAPN) using a novel three-dimensional volume analyzer. Material and methods We respectively evaluated the medical records of 23 consecutive patients who underwent RAPN between January 2012 and March 2016 and the data on their kidney function and parenchymal mass specific to the operated kidney. Parenchymal volume was measured by computerized tomography and reconstructed with a Synapse Vincent volumetric analyzer. Using this system, we predicted the renal vascular territory and other trauma areas involved in renorrhaphy. All measurements were taken within 3 and 6 months pre- and postoperatively, respectively. RESULTS The actual postoperative renal parenchymal volume was significantly correlated with the virtual predicted residual renal volume excluding the tumor and resected margin (r = 0.435, p
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- 2017
26. Identification of MicroRNAs Involved in Resistance to Sunitinib in Renal Cell Carcinoma Cells
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Kunishige Onuma, Noriya Yamaguchi, Hideto Iwamoto, Atsushi Takenaka, Tetsuya Yumioka, Mitsuhiko Osaki, Hiroyuki Kugoh, Futoshi Okada, and Takehiro Sejima
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0301 basic medicine ,Cancer Research ,medicine.medical_specialty ,Indoles ,Microarray ,medicine.drug_class ,Antineoplastic Agents ,Biology ,urologic and male genital diseases ,Tyrosine-kinase inhibitor ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,Renal cell carcinoma ,law ,Cell Line, Tumor ,Internal medicine ,microRNA ,Sunitinib ,medicine ,Humans ,Pyrroles ,Carcinoma, Renal Cell ,Polymerase chain reaction ,General Medicine ,medicine.disease ,Kidney Neoplasms ,female genital diseases and pregnancy complications ,MicroRNAs ,030104 developmental biology ,Endocrinology ,Oncology ,Drug Resistance, Neoplasm ,Cell culture ,Cytoplasm ,030220 oncology & carcinogenesis ,Cancer research ,medicine.drug - Abstract
Aim To generate sunitinib-resistant renal cell carcinoma (RCC) cell lines and identify miRNAs contributing to sunitinib resistance. Materials and methods Two RCC cell lines, ACHN and RCC23, were cultured by continuous treatment with sunitinib for 3 months, with doses gradually increasing up to the 50% inhibitory concentration for each cell line. We performed microarray and quantitative real-time polymerase chain reaction analyses of sunitinib-resistant ACHN (SR-ACHN) and RCC23 (SR-RCC23) cells, as well of as sunitinib-sensitive ACHN and RCC23 cells. Results SR-ACHN and SR-RCC23 cells exhibited significantly higher resistance to sunitinib treatment compared to sunitinib-sensitive cells. SR-ACHN and SR-RCC23 cells were hypertrophic and contained granules in the cytoplasm. When SR-ACHN and SR-RCC23 cells were compared to ACHN and RCC23 cells, expression of miR-575, miR-642b-3p, and miR-4430 was significantly increased, while that of miR-18a-5p, miR-29b-1-5p, miR-431-3p, and miR-4521 was significantly decreased. Conclusion These miRNAs may contribute to sunitinib resistance in humans.
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- 2017
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27. Comprehensive Analysis of Factors Affecting Post-partial Nephrectomy Renal Global Function
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Takehiro, Sejima, Tetsuya, Yumioka, Noriya, Yamaguchi, Hideto, Iwamoto, Toshihiko, Masago, Shuichi, Morizane, Masashi, Honda, and Atsushi, Takenaka
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Original Article - Abstract
To explore new factors that are predictive of post-partial nephrectomy (PN) renal global function, we analyzed various clinico-pathological factors with a special focus on renal volume measured via three-dimensional imaging technology and histopathological parameters in non-neoplastic parenchyma.Estimated glomerular filtration rate (eGFR) and computed tomography (CT) scan were examined pre- and 6 months. post-operatively in 52 patients treated by PN. The post-operative percent eGFR decline was employed as the measure of global renal functional deterioration. The novel factors analyzed included the percent renal parenchymal volume decline of the diseased side, contralateral and bilateral sides and the global glomerulosclerosis (GS) extent in non-neoplastic parenchyma. Renal parenchymal volumetry by CT scan was performed using SYNAPSE VINCENT (Fujifilm). Additional factors analyzed included patient demographics and comorbidities, surgical factors and tumor pathology. All factors demonstrating significant tendencies (Two groups were categorized according to the degree of eGFR decline. Groups A and B were categorized as less than 15% and greater than 15% decline, respectively. Pre-operative eGFR was significantly lower in group B than in group A. Greater than 10% global GS extent in non-neoplastic parenchyma, male gender and proteinuria were significantly more frequent in in group B than in group A. The renal volume change was not statistically significant. In multivariate logistic regression analysis, greater than 10% global GS extent in non-neoplastic parenchyma was the sole independent affecting factor for Group B.Our study suggested that host factors rather than surgical factors may be useful for the prediction of post-PN renal global function. The evaluation of the global GS extent in non-neoplastic parenchyma is a promising biomarker of post-PN renal global function.
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- 2017
28. Initial evidence demonstrating the association between the vascular status in surgically resected renal parenchymal pathology and sexual function
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Shuichi Morizane, Yoshihisa Umekita, Hideto Iwamoto, Atsushi Takenaka, Akihisa Yao, Toshihiko Masago, Masashi Honda, and Takehiro Sejima
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Adult ,Male ,medicine.medical_specialty ,Pathology ,Urology ,medicine.medical_treatment ,Kidney Glomerulus ,Comorbidity ,Nephrectomy ,Renal Circulation ,Cohort Studies ,Impotence, Vasculogenic ,Postoperative Complications ,Renal Artery ,Predictive Value of Tests ,Renal cell carcinoma ,Surveys and Questionnaires ,medicine.artery ,Humans ,Medicine ,Renal artery ,Carcinoma, Renal Cell ,Aged ,Glomerulosclerosis, Focal Segmental ,business.industry ,Glomerulosclerosis ,Middle Aged ,Atherosclerosis ,medicine.disease ,Kidney Neoplasms ,Erectile dysfunction ,Socioeconomic Factors ,Histopathology ,business ,Sexual function - Abstract
Our goal is to evaluate the association between histopathology of glomerulosclerosis (GS) and atherosclerosis (AS) in the nephrectomized normal parenchyma together with patients' background, and erectile dysfunction (ED) of patients treated with radical nephrectomy (RN) for renal cell carcinoma (RCC). ED was assessed with the International Index of Erectile Function in 65 patients who were less than age 70 years at the time of questionnaire. Glomeruli status was assessed by the extent of global GS. AS was graded based on lumen occlusion and frequency of involvement. Patients' backgrounds included any comorbidities, post-RN renal insufficiency, tumor pathology, demographics and social status. The presence of diabetes mellitus and lack of a spouse were independent predictors for severe ED, whereas G0/1 AS was an independent predictor for mild/no ED. The extent of global GS was significantly lower in patients with mild/no ED than in other patients. Our study represents the first report identifying healthy arterial status in the renal parenchyma as a significant indicator of favorable erectile function and that the evaluation of AS severity is not a superior indicator of severe ED in the presence of comorbidities or social status among patients treated with RN.
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- 2014
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29. Anatomical dimensions using preoperative magnetic resonance imaging: Impact on the learning curve of robot-assisted laparoscopic prostatectomy
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Hideto Iwamoto, Atsushi Takenaka, Akihisa Yao, Takehiro Sejima, Shuichi Morizane, Masashi Honda, and Toshihiko Masago
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Univariate analysis ,medicine.medical_specialty ,Surgical margin ,medicine.diagnostic_test ,business.industry ,Urology ,Magnetic resonance imaging ,Pelvic cavity ,medicine.disease ,Surgery ,Prostate cancer ,medicine.anatomical_structure ,Prostate ,medicine ,Laparoscopic Prostatectomy ,Radiology ,business ,Pelvis - Abstract
Objective To evaluate the impact of anatomical dimensions as measured using preoperative magnetic resonance imaging on the outcomes of robot-assisted laparoscopic prostatectomy. Methods We retrospectively reviewed 100 consecutive robot-assisted laparoscopic prostatectomy procedures that were carried out by a single surgeon at the Division of Urology, Department of Surgery, Tottori University Faculty of Medicine, Yonago, Japan. Preoperative clinical data and anatomical measurements, including the calculated prostate volume pelvic cavity index, were determined based on preoperative magnetic resonance imaging, and their effects on console time, estimated blood loss and surgical margin status were compared. Results Body mass index, the prostate anteroposterior diameter, and the prostate volume-to-pelvic cavity index ratio were all significantly correlated with console time and estimated blood loss, based on a univariate analysis (P
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- 2014
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30. Renal parenchymal histopathology predicts life-threatening chronic kidney disease as a result of radical nephrectomy
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Atsushi Takenaka, Masashi Honda, and Takehiro Sejima
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medicine.medical_specialty ,business.industry ,Urology ,medicine.medical_treatment ,Disease ,Nomogram ,urologic and male genital diseases ,medicine.disease ,Pathophysiology ,Nephrectomy ,Quality of life ,Renal cell carcinoma ,medicine ,Histopathology ,business ,Kidney disease - Abstract
The preoperative prediction of post-radical nephrectomy renal insufficiency plays an important role in the decision-making process regarding renal surgery options. Furthermore, the prediction of both postoperative renal insufficiency and postoperative cardiovascular disease occurrence, which is suggested to be an adverse consequence caused by renal insufficiency, contributes to the preoperative policy decision as well as the precise informed consent for a renal cell carcinoma patient. Preoperative nomograms for the prediction of post-radical nephrectomy renal insufficiency, calculated using patient backgrounds, are advocated. The use of these nomograms together with other types of nomograms predicting oncological outcome is beneficial. Post-radical nephrectomy attending physicians can predict renal insufficiency based on the normal renal parenchymal pathology in addition to preoperative patient characteristics. It is suggested that a high level of global glomerulosclerosis in nephrectomized normal renal parenchyma is closely associated with severe renal insufficiency. Some studies showed that post-radical nephrectomy severe renal insufficiency might have an association with increased mortality as a result of cardiovascular disease. Therefore, such pathophysiology should be recognized as life-threatening, surgically-related chronic kidney disease. On the contrary, the investigation of the prediction of mild post-radical nephrectomy renal insufficiency, which is not related to adverse consequences in the postoperative long-term period, is also promising because the prediction of mild renal insufficiency might be the basis for the substitution of radical nephrectomy for nephron-sparing surgery in technically difficult or compromised cases. The deterioration of quality of life caused by post-radical nephrectomy renal insufficiency should be investigated in conjunction with life-threatening matters.
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- 2014
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31. A case of renal cell carcinoma metastatic to the ovary: a case report and review of the literature
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Takehiro Sejima, Shu Nakamoto, Toshihiko Masago, Takeshi Watanabe, Shuichi Morizane, and Atsushi Takenaka
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Pathology ,medicine.medical_specialty ,business.industry ,medicine.medical_treatment ,Ovary ,medicine.disease ,Malignancy ,female genital diseases and pregnancy complications ,Nephrectomy ,Metastasis ,Ovarian tumor ,medicine.anatomical_structure ,Renal cell carcinoma ,Clear cell carcinoma ,medicine ,business ,Brain metastasis - Abstract
A 35-year-old woman complained of pain in the left hypochondrium. She was diagnosed as having a left renal carcinoma and treated with retro-approach radical nephrectomy without lymphadenectomy. The histology was renal cell carcinoma (RCC), papillary cell type 2, G3, expansive type, INFα, v(+), pT2N0M0, stage II. The Memorial Sloan-Kettering Cancer Center risk classification was favorable. Then, 18 months later, a multilocular cystic mass (15 × 10 cm) in the pelvis was found on abdominal CT and MRI. Although the ovarian tumor was highly suspicious of malignancy, differentiation between primary and metastatic ovarian tumor was not possible. Examination of the resected right ovarian tumor showed that it consisted of clear cell type (G2) that resembled components of the left RCC. When we resected the right ovarian tumor, we found some nodules on the peritoneum. There seemed to be new suspicious metastases. Immunohistochemistry revealed that only CD10 was positive; 34βE12, CA125, and CK7 were negative. These results indicated renal metastasis. The patient then underwent targeted therapy with sunitinib 50 mg/day for 28 days. One month later, a new metastasis was found in the left ovary and treated surgically. Soon thereafter, a brain metastasis was found and the patient underwent radiation therapy to the brain, but she died 21 months after the nephrectomy. Metastasis to the ovary from RCC is very rare, and only 20 cases have been reported. Its rarity may be related to the difficulty associated with the differential diagnosis of metastatic ovarian tumors from RCC and primary ovarian clear cell carcinoma. Careful histological and immunohistochemical analysis may help differentiate the two.
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- 2014
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32. Effects of sensory neuron-specific receptor agonist on bladder function in a rat model of cystitis induced by cyclophosphamide
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Atsushi Takenaka, Motoaki Saito, Bunya Kawamoto, Takehiro Sejima, Michael B. Chancellor, Kuniyasu Muraoka, Naoto Kobayashi, Katsuya Hikita, Masashi Honda, and Naoki Yoshimura
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Agonist ,Nephrology ,medicine.medical_specialty ,Cyclophosphamide ,medicine.drug_class ,Urology ,medicine.medical_treatment ,media_common.quotation_subject ,Pharmacology ,urologic and male genital diseases ,Urination ,Rats, Sprague-Dawley ,Internal medicine ,Cystitis ,medicine ,Animals ,Receptor ,Saline ,Medulla ,media_common ,business.industry ,Peptide Fragments ,Sensory neuron ,Rats ,Disease Models, Animal ,medicine.anatomical_structure ,Anesthesia ,Female ,business ,medicine.drug - Abstract
To investigate the effects of activation of sensory neuron-specific receptors (SNSRs) on cyclophosphamide (CYP) bladder overactivity in rats. Female Sprague–Dawley rats (235–258 g) were used. Rats were injected with either CYP (200 mg/kg, intraperitoneally) or saline (control). Continuous cystometrograms (0.04 ml/min) were recorded 48 h after CYP or saline injection under urethane anesthesia. After stable micturition cycles were established, a selective rat SNSR1 agonist, bovine adrenal medulla 8-22 (BAM8-22), was administered intravenously or intrathecally. Cyclophosphamide treatment-induced higher baseline pressure and shorter intercontraction intervals compared with the control group. Intravenous administration of BAM8-22 at 10, 30 and 100 μg/kg significantly increased intercontraction intervals in the CYP-treated group. Intrathecal administration of BAM8-22 at 0.03, 0.1 and 0.3 μg also significantly increased intercontraction intervals in the CYP-treated group. Intravenous or intrathecal administration of BAM8-22 did not change baseline pressure or maximum voiding pressure in the CYP-treated group. These findings indicate that activation of SNSRs can suppress CYP-induced bladder overactivity, probably due to suppression of bladder afferent activity.
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- 2014
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33. Comprehensive Analyses of Factors Associated with Postoperative Renal Global Function in Patients Treated by Partial Nephrectomy
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Takehiro Sejima, Shuichi Morizane, Toshihiko Masago, Atsushi Takenaka, Masashi Honda, and Tetsuya Yumioka
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medicine.medical_specialty ,Univariate analysis ,Multivariate analysis ,business.industry ,medicine.medical_treatment ,Urology ,Renal function ,Logistic regression ,Nephrectomy ,Group B ,Global function ,General Earth and Planetary Sciences ,Medicine ,In patient ,business ,General Environmental Science - Abstract
Study aim: To characterize the associated factors of postoperative renal global functional deterioration after partial nephrectomy (PN), comprehensive analyses were performed using multiple factors categorized as data from pre, intra and postoperative periods. Methods: Ninety-three patients underwent PN. Estimated glomerular filtration rate (eGFR) and computed tomography (CT) scans were examined pre- and 6 months postoperatively. Renal global functional deterioration after PN was assessed by postoperative percent of eGFR decline. Pre- and postoperative renal parenchymal volume (RPV) was measured by the Synapse Vincent volumetric analyzer which creates a reconstructed image from a CT scan. Additional factors that were analyzed included patient demographics, comorbidities, surgical factors and tumor pathology. All factors demonstrating statistical tendencies (P < 0.1) in univariate analyses were subjected to multivariate logistic regression analysis. Two groups were categorized according to the degree of eGFR decline. Groups A and B were categorized as less than 15% and greater than 15% declines, respectively. Results: The case distributions of hypertension (HTN) and male gender were significantly shifted in group B. Significant compensatory renal hypertrophy of the contralateral side occurred postoperatively. The percent increment of RPV in the contralateral side in group B was significantly lower than that in group A. In multivariate analysis, HTN was the sole independent associated factor in group B. Conclusions: Host factors, rather than surgical factors, may be associated with postoperative renal global functional deterioration in PN. Surgeons should consider medical problems in addition to surgical skills especially in HTN patients.
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- 2019
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34. The Usefulness of the Interpretation of Initial Plain CT Scan in Hospitalized Patients with Acute Pyelonephritis without Obstructive Uropathy
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Takehiro Sejima, Katsuya Hikita, Masashi Honda, Atsushi Takenaka, and Shuichi Morizane
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Kidney ,medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,Hospitalized patients ,Computed tomography ,medicine.disease ,Adipose capsule of kidney ,medicine.anatomical_structure ,Diabetes mellitus ,medicine ,Thickening ,Radiology ,business ,Renal pelvis ,Obstructive uropathy - Abstract
To investigate the association between plain computed tomography (CT) findings and clinical characteristics and to characterize the potential factors affecting the disease outcome in hospitalized patients with acute pyelonephritis (APN) without obstructive uropathy, we reviewed our clinical database retrospectively. Five plain CT scan abnormal kidney findings of perirenal fat stranding, thickening of perirenal fasciae, kidney enlargement, dilation of renal pelvis, and abnormal density of renal parenchyma were elucidated in 70 patients with APN without obstructive uropathy who were hospitalized. The association between CT scan findings and clinical characteristics were analyzed. Logistic regression analysis was performed to characterize the potential factors that affect the period until the patient was afebrile using various clinical factors and five defined CT scan findings. Perirenal fat stranding and dilation of renal pelvis were significantly frequent in females and patients with diabetes mellitus. Serum inflammation markers were significantly deteriorated in patients with perirenal fat stranding, thickening of perirenal fasciae and kidney enlargement compared to patients with normal findings. An age-adjusted Charlson comorbidity index ≥ 5 and low serum albumin values were significantly associated with a prolonged febrile period. In conclusion, although abnormal plain CT scan findings at diagnosis are associated with some clinical characteristics, the patient’s intrinsic factors are more useful for predicting the disease outcome in hospitalized patients with APN without obstructive uropathy.
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- 2019
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35. Serum miR-210 as a potential biomarker of early clear cell renal cell carcinoma
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Hideto Iwamoto, Mitsuhiko Osaki, Futoshi Okada, Yusuke Kanda, Takehiro Sejima, and Atsushi Takenaka
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Adult ,Male ,Oncology ,Cancer Research ,medicine.medical_specialty ,Biology ,Metastasis ,Renal cell carcinoma ,Internal medicine ,Biomarkers, Tumor ,Carcinoma ,medicine ,Humans ,Carcinoma, Renal Cell ,Aged ,Aged, 80 and over ,Oncogene ,Cancer ,Middle Aged ,medicine.disease ,Gene Expression Regulation, Neoplastic ,MicroRNAs ,Clear cell renal cell carcinoma ,Clear cell carcinoma ,Biomarker (medicine) - Abstract
Early detection and treatment are critical in the management of renal cell carcinoma (RCC). However, there is no standard serum biomarker to facilitate early diagnosis or prognostic stratification in patients with RCC. Recent reports suggest that circulating microRNAs (miRNAs) have great potential as biomarkers for diagnosis and prognosis in patients with several types of cancers. Further, many studies using miRNA microarray analysis demonstrated that miR-210 expression in clear cell carcinoma (CCC), which is the largest subtype of RCC, was significantly upregulated in tumor tissue. Therefore, we investigated whether serum miR-210 could be a useful biomarker for the diagnosis and progression of CCC. This study included 34 CCC patients and 23 healthy controls (HC). First, we analyzed tissue miR-210 levels in tumor tissues and matched normal tissues from the 34 CCC patients. Second, we investigated the serum miR-210 levels in the 34 CCC patients and the 23 HC patients. Real-time polymerase chain reaction (PCR) was used to measure miRNA levels. Moreover, we examined the correlation between serum miR-210 levels and the clinicopathological parameters. Among patients with CCC, expression of miR-210 was higher in tumor tissues compared to normal tissues (P
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- 2013
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36. The significant immunological characteristics of peripheral blood neutrophil-to-lymphocyte ratio and Fas ligand expression incidence in nephrectomized tumor in late recurrence from renal cell carcinoma
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Hideto Iwamoto, Shuichi Morizane, Tadahiro Isoyama, Motoaki Saito, Atsushi Takenaka, Akihisa Yao, Takehiro Sejima, and Nobuyuki Hinata
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Male ,medicine.medical_specialty ,Pathology ,Fas Ligand Protein ,Neutrophils ,Urology ,medicine.medical_treatment ,Lymphocyte ,Kaplan-Meier Estimate ,Nephrectomy ,Gastroenterology ,Fas ligand ,Metastasis ,Immune system ,Renal cell carcinoma ,Internal medicine ,Outcome Assessment, Health Care ,medicine ,Humans ,Lymphocyte Count ,Lymphocytes ,Neoplasm Metastasis ,Neutrophil to lymphocyte ratio ,Carcinoma, Renal Cell ,Aged ,Aged, 80 and over ,Performance status ,Reverse Transcriptase Polymerase Chain Reaction ,business.industry ,Middle Aged ,Prognosis ,medicine.disease ,Immunohistochemistry ,Kidney Neoplasms ,Gene Expression Regulation, Neoplastic ,medicine.anatomical_structure ,Oncology ,Female ,Neoplasm Recurrence, Local ,business - Abstract
Objective In order to characterize the significance of immune system function in patients with advanced renal cell carcinoma (RCC), we investigated the interactive relationships among the following parameters: metastatic characteristics, expression of Fas ligand (FasL) in nephrectomized specimens, immunological parameters, and patient's prognosis. Materials and methods Thirty-five patients with advanced RCC were stratified into 3 groups according to the characteristics of metastasis timing, at first presentation (mFP), within 5 years of nephrectomy (early-recurrence), after 5 years (late-recurrence). Immunological parameters [hemoglobin, lymphocyte count, neutrophil/lymphocyte ratio (NLR), serum albumin, Eastern Cooperative Oncology Group (ECOG) performance status (PS), and Charlson Comorbidity Index], FasL expression in RCC, and patient prognosis from occurrence of metastasis were compared among the groups. Thirty-five patients were also stratified into 2 groups according to FasL positivity and individual parameters. Patient's prognosis and the remaining immunological parameters were compared between groups. Results The NLRs of the late-recurrence group were significantly lower than those of the mFP (P = 0.0004) and early-recurrence (P = 0.013) groups. The FasL mRNA positivity of the late-recurrence group was significantly lower than those of the mFP (P = 0.001) and early-recurrence (P = 0.0277) groups. The prognosis of the late-recurrence group was significantly better than that of the early-recurrence group (P = 0.0255). NLRs were significantly lower in the FasL-negative group than in the -positive group (P = 0.0182). The cause-specific survival rates of the ECOG PS 0 group were significantly higher than that of the ECOG PS > 0 group (P Conclusions Our results suggest the associations of the prognosis in advanced RCC with peripheral blood NLR and FasL expression in nephrectomized tumor. The characteristics of lower values of NLR and FasL expression positivity in late-recurrence compared with other metastatic timings suggest strong host immune activity, and may imply relatively long survival. On the other hand, elucidation of the patient's general condition obtained not only by chemical data but also by ECOG PS is crucial in the management of patients with advanced RCC.
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- 2013
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37. Successful radiation therapy for primary mucosa-associated lymphoid tissue lymphoma of the prostate
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Ryosuke Nemoto, Takehiro Sejima, Atsushi Takenaka, Shu Nakamoto, Takeshi Watanabe, Toshihiko Masago, and Tadahiro Isoyama
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PCA3 ,Pathology ,medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,medicine.medical_treatment ,MALT lymphoma ,Hyperplasia ,medicine.disease ,Lymphoma ,Radiation therapy ,medicine.anatomical_structure ,Prostate ,Biopsy ,medicine ,Dysuria ,medicine.symptom ,business - Abstract
We report a case of primary mucosa-associated lymphoid tissue (MALT) lymphoma of the prostate. A 57-year-old man complained of dysuria, nocturia, and sensation of residual urine for 3 years. The laboratory data showed that the serum prostate-specific antigen (PSA) level was 5.2 ng/mL. A physical examination revealed mild prostate enlargement and no lymphadenopathy. Magnetic resonance imaging (MRI) suggested benign prostatic hyperplasia. A transrectal ultrasound-guided prostate needle biopsy was performed and the prostatic tissues of the biopsy showed the features of MALT lymphoma. And then complete clinical investigation, including bone marrow biopsy and positron emission tomography (PET), did not show any other involved site. The patient was diagnosed as having extranodal marginal zone B cell MALT-type lymphoma of the prostate, low grade and stage I. He received external beam radiation therapy to the prostate with a total dose of 44 Gy in 22 fractions. A follow-up biopsy of the prostate was performed 12 months after the radiation therapy. The immunohistochemical analysis showed no evidence of disease. He became free of disease within the following 24 months.
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- 2013
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38. Prognostic impact of preoperative hematological disorders and a risk stratification model in bladder cancer patients treated with radical cystectomy
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Tadahiro Isoyama, Tsutomu Koumi, Takashi Amisaki, Shuichi Morizane, Motoaki Saito, Takehiro Sejima, Atsushi Takenaka, and Akihisa Yao
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Hematological disorders ,medicine.medical_specialty ,Bladder cancer ,Multivariate analysis ,business.industry ,Urology ,medicine.medical_treatment ,medicine.disease ,Cystectomy ,Risk stratification ,Medicine ,Positive Surgical Margin ,business ,Pathological ,Neoadjuvant therapy - Abstract
Objectives The present study investigated prognostic indicators, including clinicopathological and preoperative hematological factors, and developed a prognostic factor-based risk stratification model in bladder cancer patients treated with radical cystectomy. Methods Data were collected from 249 consecutive bladder cancer patients treated with radical cystectomy without neoadjuvant therapy. Prognostic values of the preoperative hematological parameters, along with the patients' clinicopathological parameters were evaluated. A risk stratification model was developed to predict disease-specific survival after radical cystectomy using the regression coefficients of multivariate analysis. Results In the multivariate analysis, preoperative hemoglobin and C-reactive protein levels, as well as the pathological factors of T stage, positive surgical margin and lymph node metastasis, were independently predictive of disease-specific survival. Low hemoglobin ( 0.5 mg/dL), extravesical T stage (≥pT3a) and positive surgical margin were independent predictors of poor disease-specific survival. The risk stratification model showed significant differences in disease-specific survival between the three subgroups. Conclusions This is the first report to show the significance of combining preoperative hemoglobin with the pathology of radical cystectomy specimens as an independent predictor for disease-specific survival, and it also represents the largest contemporary series to date demonstrating that two types of preoperative hematological disorders, assessed by hemoglobin and C-reactive protein, are independent predictors in bladder cancer patients treated with radical cystectomy. Our risk stratification model could provide physicians with useful prognostic information for identifying patients who might be candidates for multimodal treatments.
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- 2013
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39. Impact of postoperative phosphodiesterase type 5 inhibitor treatment on lower urinary tract symptoms after robot-assisted radical prostatectomy: a longitudinal study
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Kuniyasu Muraoka, Katsuya Hikita, Masashi Honda, Takehiro Sejima, Shuichi Morizane, Bunya Kawamoto, and Atsushi Takenaka
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Male ,medicine.medical_specialty ,Urology ,medicine.medical_treatment ,030232 urology & nephrology ,Tadalafil ,03 medical and health sciences ,0302 clinical medicine ,Lower Urinary Tract Symptoms ,Robotic Surgical Procedures ,Lower urinary tract symptoms ,Medicine ,Humans ,Longitudinal Studies ,Aged ,Retrospective Studies ,Postoperative Care ,Prostatectomy ,Urinary continence ,business.industry ,Urinary Bladder, Overactive ,Prostatic Neoplasms ,Retrospective cohort study ,Middle Aged ,Phosphodiesterase 5 Inhibitors ,medicine.disease ,Treatment Outcome ,Urinary Incontinence ,Overactive bladder ,Nephrology ,030220 oncology & carcinogenesis ,cGMP-specific phosphodiesterase type 5 ,International Prostate Symptom Score ,business ,medicine.drug - Abstract
This study aimed to assess the role of tadalafil, a phosphodiesterase type 5 inhibitor (PDE5-I), in recovery of lower urinary tract symptoms (LUTS) after robot-assisted radical prostatectomy (RARP).All patients treated with RARP between October 2010 and August 2013 were enrolled in this retrospective study on prospectively collected data. Patients were retrospectively divided into groups according to postoperative treatment: patients taking tadalafil twice weekly from 1 month to 6 months after RARP, and patients not taking tadalafil. The International Prostate Symptom Score (IPSS), the Overactive Bladder Symptom Score (OABSS) and urinary continence (UC) were assessed preoperatively (2 days before RARP) and at 1, 3, 6, 9 and 12 months after RARP.There was no difference in the overall IPSS score between the groups. At 6 and 9 months, the IPSS storage symptom scores were significantly lower in patients taking tadalafil than in patients not taking tadalafil. In patients with overactive bladder (OAB) before RARP (n = 22), no differences in the total scores of OABSS were seen between patients taking tadalafil and patients not taking tadalafil. On the other hand, in non-OAB patients before RARP (n = 68), at 3, 6 and 9 months, the total scores of OABSS were significantly lower in patients taking tadalafil than in patients not taking tadalafil. No differences in UC rates after surgery were seen between the groups.Postoperative tadalafil treatment may be temporarily effective for the recovery of the IPSS storage symptom scores and OABSS.
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- 2016
40. Biochemical Recurrence Prediction in High-Risk Prostate Cancer Patients, Following Robot-Assisted Radical Prostatectomy
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Noriya, Yamaguchi, Tetsuya, Yumioka, Hideto, Iwamoto, Toshihiko, Masago, Shuichi, Morizane, Masashi, Honda, Takehiro, Sejima, and Atsushi, Takenaka
- Subjects
Original Article - Abstract
High-risk prostate cancer treatment has been controversial. Some high-risk prostate cancer patients fail to respond to radical prostatectomy only. Thus, we aimed to investigate the predictive factors for biochemical recurrence (BCR) and identify patients who could achieve sufficient therapeutic effect by radical prostatectomy only.Of 264 medical records reviewed, 141 low-intermediate-risk and 100 high-risk prostate cancer patients, excluding those who had received neoadjuvant hormone therapy, were analyzed. BCR was defined as the first increase in prostate-specific antigen levels (≥ 0.2 ng/mL), with levels not decreasing to undetectable limits, after radical prostatectomy. Log-rank test and Cox proportional hazards regression analyses were performed to determine the prognostic factors. We investigated the perioperative predictive factors for BCR and BCR-free survival rates, with the number of National Comprehensive Cancer Network (NCCN) high-risk factors for high-risk prostate cancer patients who underwent robot-assisted radical prostatectomy.Multivariate analyses showed that clinical T3 was significantly associated with BCR [hazard ratio (HR) = 4.052; 95% confidence interval (CI), 1.26-12.99;High-risk prostate cancer patients with 1 NCCN high-risk factor can be considered for robot-assisted radical prostatectomy treatment only.
- Published
- 2016
41. The Liverwort
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Ginga, Shimakawa, Kimitsune, Ishizaki, Shigeyuki, Tsukamoto, Moeko, Tanaka, Takehiro, Sejima, and Chikahiro, Miyake
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Chlorophyll ,Time Factors ,Flavoproteins ,Light ,Photosystem I Protein Complex ,Reverse Transcriptase Polymerase Chain Reaction ,Photosystem II Protein Complex ,Proton-Motive Force ,Articles ,Electron Transport ,Oxygen ,Cytochrome b6f Complex ,Gene Expression Regulation, Plant ,Mutation ,Marchantia ,Photosynthesis ,Plant Proteins - Abstract
Flavodiiron protein drives an oxygen-dependent alternative electron flow to stimulate the protective mechanisms of PSI against photooxidative damage in the liverwort Marchantia polymorpha.
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- 2016
42. [Lymph node dissection]
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Takehiro, Sejima and Atsushi, Takenaka
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Male ,Postoperative Complications ,Meta-Analysis as Topic ,Lymphatic Metastasis ,Humans ,Lymph Node Excision ,Prostatic Neoplasms - Published
- 2016
43. MP60-04 INTRAVESICAL ADMINISTRATION OF SENSORY NEURON-SPECIFIC RECEPTOR AGONIST SUPPRESSES CYCLOPHOSPHAMIDE-INDUCED BLADDER OVERACTIVITY
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Motoaki Saito, Naoki Yoshimura, Takehiro Sejima, Kuniyasu Muraoka, Tsounapi Panagiota, Masashi Honda, Takahiro Shimizu, Atsushi Takenaka, Michael B. Chancellor, Shogo Shimizu, Hikita Katsuya, Bunya Kawamoto, and Shuichi Morizane
- Subjects
Agonist ,medicine.anatomical_structure ,Cyclophosphamide ,medicine.drug_class ,business.industry ,Urology ,medicine ,Pharmacology ,business ,Receptor ,Sensory neuron ,medicine.drug - Published
- 2016
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44. MP34-12 THREE-DIMENSIONAL IMAGING AND ROBOTIC SURGERY IN A COMPREHENSIVE DEPARTMENT WITHIN AN ACADEMIC INSTITUTIONAL FRAMEWORK
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Masashi Honda, Takehiro Sejima, Shuichi Morizane, Toshihiko Masago, Hideto Iwamoto, Noriya Yamaguchi, Atsushi Takenaka, and Tetsuya Yumioka
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medicine.medical_specialty ,Three dimensional imaging ,business.industry ,Urology ,Emergency medicine ,medicine ,Robotic surgery ,Medical physics ,business - Published
- 2016
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45. MP89-02 IS THERE A NON-HORMONAL MECHANISM IN THE DIABETES-INDUCED DYSFUNCTION OF THE VASA DEFERENTIA IN THE RAT?
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Fotios Dimitriadis, Masaki Imanishi, Shinji Matsunaga, Panagiota Tsounapi, Bunya Kawamoto, Katsuya Hikita, Masashi Honda, Michiyo Iguchi, Shuhei Tomita, Nikolaos Sofikitis, Atsushi Takenaka, Shogo Shimizu, Motoaki Saito, Takehiro Sejima, and Kuniyasu Muraoka
- Subjects
medicine.medical_specialty ,Endocrinology ,business.industry ,Non hormonal ,Mechanism (biology) ,Urology ,Diabetes mellitus ,Internal medicine ,Medicine ,business ,medicine.disease ,VASA DEFERENTIA - Published
- 2016
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46. MP28-02 SUPRASPINAL AND SPINAL EFFECTS OF DOPAMINE UPTAKE INHIBITOR ON THE MICTURITION REFLEX IN URETHANE-ANESTHETIZED RATS
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Atsushi Takenaka, Hikita Katsuya, Kuniyasu Muraoka, Shogo Shimizu, Motoaki Saito, Tsounapi Panagiota, Takehiro Sejima, Naoki Yoshimura, Masashi Honda, Michael B. Chancellor, Bunya Kawamoto, and Takahiro Shimizu
- Subjects
Micturition reflex ,business.industry ,Dopamine ,Urology ,Medicine ,Pharmacology ,business ,medicine.drug - Published
- 2016
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47. MP73-01 CHARACTERIZATION OF FAVORABLE AND UNFAVORABLE POST-RADICAL NEPHRECTOMY RENAL INSUFFICIENCY
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Takehiro Sejima, Toshihiko Masago, Noriya Yamaguchi, Hideto Iwamoto, Atsushi Takenaka, Shuichi Morizane, Tetsuya Yumioka, and Masashi Honda
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medicine.medical_specialty ,business.industry ,Urology ,medicine.medical_treatment ,Medicine ,business ,Nephrectomy - Published
- 2016
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48. Transurethral En Bloc Resection of Bladder Tumor Using an Endoscopic Submucosal Dissection Technique: Preliminary Results in an Animal Model
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Shuichi, Morizane, Takehiro, Sejima, Hideto, Iwamoto, Toshihiko, Masago, Masashi, Honda, Yuichiro, Ikebuchi, Kazuya, Matsumoto, Masaru, Ueki, and Atsushi, Takenaka
- Subjects
Original Article - Abstract
Transurethral resection of bladder tumor (TURBT) technique has been considered the routine method for removing most bladder tumors for decades. In contrast, endoscopic submucosal dissection (ESD) is the gold-standard treatment for gastrointestinal superficial tumors. We investigated the effectiveness and applicability of a new technique for en bloc bladder tumor resection using ESD procedure.Four Landrace Large White Duroc female pigs were anesthetized with isoflurane prior endoscopic resection using a large-caliber prototype fiber bronchoscope. After local infiltration of the submucosa with sodium hyaluronate using an injector needle, a section of the target area (1.0-2.0 cm diameter circular area) was cut with the Dual Knife.In total, seven target sections were resected from the pigs. The median size of the resected sections was 1.8 cm (range 1.0-2.5 cm) and the median time taken to perform the resection of one section was 20 min (range 4-35 min). These target sections were completely resected en bloc. Although the small bladder perforations occurred on two occasions, no other short-term complications such as uncontrollable bleeding were observed.This procedure is a slightly difficult in the pigs with thin bladder walls. However, this procedure with the slim flexible cystoscope may allow us to be able to remove bladder tumors using only light sedation, especially for cases when small tumor recurrence is observed during routine cystoscopy for the patients with non-muscle invasive bladder cancer.
- Published
- 2016
49. A prognostic model for predicting urinary incontinence after robot-assisted radical prostatectomy
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Masashi, Honda, Bunya, Kawamoto, Shuichi, Morizane, Katsuya, Hikita, Kuniyasu, Muraoka, Takehiro, Sejima, and Atsushi, Takenaka
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Male ,Prostatectomy ,Urinary Bladder ,Prostatic Neoplasms ,Middle Aged ,Prognosis ,Magnetic Resonance Imaging ,Logistic Models ,Postoperative Complications ,Urinary Incontinence ,Robotic Surgical Procedures ,Urethra ,Predictive Value of Tests ,Risk Factors ,Preoperative Period ,Humans ,Urinary Tract ,Aged ,Proportional Hazards Models - Abstract
The aim of this study is to develop a novel prognostic model for estimating the risk of postoperative urinary incontinence (UI) after robot-assisted radical prostatectomy (RARP).Participants comprised 131 men who underwent RARP at our hospital from 2011 to 2013. Cox regression analyses were performed to evaluate associations between UI and preoperative factors including filling cystometry and pressure-flow study results and magnetic resonance imaging.Logistic regression analyses revealed significant associations between membranous urethral length or levator thickness and UI at 3 and 6 months. Stratification produced high (membranous urethral length 9.5 mm or levator thickness 9.0 mm) and low (membranous urethral length ≥ 9.5 mm and levator thickness ≥ 9.0 mm) UI risk groups. These inter-group differences in UI rate were significant.We developed a novel prognostic model based on preoperative patient data that can be used for patient counselling.
- Published
- 2016
50. Preoperative prognostic factors after radical nephroureterectomy in patients with upper urinary tract urothelial carcinoma
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Takehiro Sejima, Hideto Iwamoto, Toshihiko Masago, Tadahiro Isoyama, Shuichi Morizane, Atsushi Takenaka, and Akihisa Yao
- Subjects
Adult ,Male ,medicine.medical_specialty ,Urology ,medicine.medical_treatment ,Kaplan-Meier Estimate ,Nephrectomy ,Severity of Illness Index ,Disease-Free Survival ,Hemoglobins ,Biomarkers, Tumor ,medicine ,Carcinoma ,Humans ,Clinical significance ,Aged ,Proportional Hazards Models ,Retrospective Studies ,Upper urinary tract ,Aged, 80 and over ,Ureteral Neoplasms ,business.industry ,Proportional hazards model ,Hazard ratio ,Retrospective cohort study ,Middle Aged ,medicine.disease ,Kidney Neoplasms ,Urinary Bladder Neoplasms ,Nephrology ,Creatinine ,Concomitant ,Multivariate Analysis ,Female ,Ureter ,Urothelium ,business ,Follow-Up Studies - Abstract
To evaluate the clinical significance of preoperative biomarkers such as laboratory data, Eastern Cooperative Oncology Group Performance Status (ECOG PS) and clinicopathological factors in patients undergoing radical nephroureterectomy for upper urinary tract urothelial carcinoma. Between 1995 and 2011, a total of 99 patients treated at our institution for upper urinary tract urothelial carcinoma were enrolled in this study. The prognostic significance of various preoperative data and clinicopathological factors were analyzed. Univariate and multivariate analyses were performed using the Kaplan–Meier method with the log-rank test and a Cox proportional hazards regression model. Median patient age was 73 years (range 44–86 years), and the median follow-up period after radical nephroureterectomy was 37.9 months (range 6.6–171.4 months). The 5-year intravesical recurrence-free survival and cancer-specific survival estimates were 47.1 and 70.0 %, respectively. On multivariate analysis, concomitant bladder carcinoma was an independent predictor of intravesical recurrence (hazard ratio 3.689; P = 0.002), and infiltration (hazard ratio 14.842; P = 0.002), preoperative serum creatinine level (hazard ratio 9.992; P = 0.005), preoperative serum hemoglobin level (hazard ratio 6.370; P = 0.018) and ECOG PS (hazard ratio 4.326; P = 0.037) were associated with worse cancer-specific survival. This study is limited by biases associated with its retrospective design. This study indicates that not only clinicopathological factors, but also preoperative biomarkers, such as serum creatinine and hemoglobin levels and ECOG PS, predict a poor survival in patients with upper urinary tract urothelial carcinoma.
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- 2012
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