Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 211
Filtrar
Más filtros

Banco de datos
País/Región como asunto
Tipo del documento
Intervalo de año de publicación
1.
Biosci Biotechnol Biochem ; 87(5): 482-490, 2023 Apr 24.
Artículo en Inglés | MEDLINE | ID: mdl-36804662

RESUMEN

HAK family transporters primarily function as K+ transporters and play major roles in K+ uptake and translocation in plants, whereas several HAK transporters exhibit Na+ transport activity. OsHAK2, a rice HAK transporter, was shown to mediate Na+ transport in Escherichia coli in a previous study. In this study, we investigated whether OsHAK2 is involved in Na+ transport in the rice plant. Overexpression of OsHAK2 increased Na+ translocation from the roots to the shoots of transgenic rice. It also increased both root and whole-plant Na+ content, and enhanced shoot length under low Na+ and K+ conditions. Meanwhile, OsHAK2 overexpression increased salt sensitivity under a long-term salt stress condition, indicating that OsHAK2 is not involved in salt tolerance, unlike in the case of ZmHAK4 in maize. These results suggest that OsHAK2 is permeable to Na+ and contributes to shoot growth in rice plants under low Na+ and K+ conditions.


Asunto(s)
Oryza , Oryza/metabolismo , Proteínas de Plantas/metabolismo , Raíces de Plantas/metabolismo , Plantas/metabolismo , Transporte Biológico , Proteínas de Transporte de Membrana , Sodio/metabolismo , Potasio , Regulación de la Expresión Génica de las Plantas
2.
Clin Exp Nephrol ; 27(12): 1010-1020, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37634218

RESUMEN

BACKGROUND: Thrombotic microangiopathy (TMA) after kidney transplantation (KTx), particularly early onset de novo (dn) TMA, requires immediate interventions to prevent irreversible organ damage. This multicenter study was performed to investigate the allogeneic clinical factors and complement genetic background of dnTMA after KTx. METHODS: Perioperative dnTMA after KTx within 1 week after KTx were diagnosed based on pathological or/and hematological criteria at each center, and their immunological backgrounds were researched. Twelve aHUS-related gene variants were examined in dnTMA cases. RESULTS: Seventeen recipients (15 donors) were enrolled, and all dnTMA cases were onset within 72-h of KTx, and 16 of 17 cases were ABO incompatible. The implementation rate of pre-transplant plasmaphereses therapies were low, including cases with high titers of anti-A/anti-B antibodies. Examination of aHUS-related gene variants revealed some deletions and variants with minor allele frequency (MAF) in Japan or East Asian genome databases in genes encoding alternative pathways and complement regulatory factors. These variants was positive in 8 cases, 6 of which were positive in both recipient and donor, but only in one graft loss case. CONCLUSIONS: Although some immunological risks were found for dnTMA after KTx, only a few cases developed into TMA. The characteristic variations revealed in the present study may be novel candidates related to dnTMA in Japanese or Asian patients, but not pathogenic variants of aHUS. Future studies on genetic and antigenic factors are needed to identify factors contributing to dnTMA after KTx.


Asunto(s)
Trasplante de Riñón , Microangiopatías Trombóticas , Humanos , Trasplante de Riñón/efectos adversos , Donadores Vivos , Pueblos del Este de Asia , Estudios Retrospectivos , Microangiopatías Trombóticas/etiología , Microangiopatías Trombóticas/genética , Proteínas del Sistema Complemento/genética
3.
J Am Soc Nephrol ; 33(1): 186-200, 2022 01.
Artículo en Inglés | MEDLINE | ID: mdl-34725107

RESUMEN

BACKGROUND: Tertiary lymphoid tissues (TLTs) are ectopic lymphoid tissues found in chronically inflamed organs. Although studies have documented TLT formation in transplanted kidneys, the clinical relevance of these TLTs remains controversial. We examined the effects of TLTs on future graft function using our histologic TLT maturity stages and the association between TLTs and Banff pathologic scores. We also analyzed the risk factors for the development of TLTs. METHODS: Serial protocol biopsy samples (0 hour, 1, 6, and 12 months) without rejection were retrospectively analyzed from 214 patients who underwent living donor kidney transplantation. TLTs were defined as lymphocyte aggregates with signs of proliferation and their stages were determined by the absence (stage I) or presence (stage II) of follicular dendritic cells. RESULTS: Only 4% of patients exhibited TLTs at the 0-hour biopsy. Prevalence increased to almost 50% at the 1-month biopsy, and then slightly further for 12 months. The proportion of advanced stage II TLTs increased gradually, reaching 19% at the 12-month biopsy. Presence of stage II TLTs was associated with higher risk of renal function decline after transplantation compared with patients with no TLT or stage I TLTs. Stage II TLTs were associated with more severe tubulitis and interstitial fibrosis/tubular atrophy at 12 months and predicted poorer graft function independently from the degree of interstitial inflammation. Pretransplantation rituximab treatment dramatically attenuated the development of stage II TLTs. CONCLUSIONS: TLTs are commonly found in clinically stable transplanted kidneys. Advanced stage II TLTs are associated with progressive graft dysfunction, independent of interstitial inflammation.


Asunto(s)
Coristoma/patología , Enfermedades Renales/patología , Trasplante de Riñón/efectos adversos , Tejido Linfoide , Disfunción Primaria del Injerto/etiología , Disfunción Primaria del Injerto/patología , Adulto , Anciano , Biopsia , Femenino , Tasa de Filtración Glomerular , Humanos , Enfermedades Renales/cirugía , Masculino , Persona de Mediana Edad , Estudios Retrospectivos
4.
Int J Mol Sci ; 23(19)2022 Oct 03.
Artículo en Inglés | MEDLINE | ID: mdl-36233042

RESUMEN

The purpose of this study was to evaluate the effects of NR1I2 (7635G>A and 8055C>T) and ABCB1 (1236C>T, 2677G>T/A, and 3435C>T) genetic polymorphisms on everolimus pharmacokinetics in 98 Japanese renal transplant patients. On day 15 after everolimus administration, blood samples were collected just prior to and 1, 2, 3, 4, 6, 9, and 12 h after administration. The dose-adjusted area under the blood concentration−time curve (AUC0-12) of everolimus was significantly lower in patients with the NR1I2 8055C/C genotype than in those with other genotypes (p = 0.022) and was significantly higher in male patients than female patients (p = 0.045). Significant correlations between the dose-adjusted AUC0-12 of everolimus and age (p = 0.001), aspartate transaminase (p = 0.001), and alanine transaminase (p = 0.005) were found. In multivariate analysis, aging (p = 0.008) and higher alanine transaminase levels (p = 0.032) were independently predictive of a higher dose-adjusted everolimus AUC0-12. Aging and hepatic dysfunction in patients may need to be considered when evaluating dose reductions in everolimus. In renal transplant patients, management using everolimus blood concentrations after administration may be more important than analysis of NR1I2 8055C>T polymorphism before administration.


Asunto(s)
Subfamilia B de Transportador de Casetes de Unión a ATP , Everolimus , Trasplante de Riñón , Receptor X de Pregnano , Subfamilia B de Transportador de Casetes de Unión a ATP/genética , Alanina Transaminasa/genética , Aspartato Aminotransferasas/genética , Citocromo P-450 CYP3A/genética , Everolimus/uso terapéutico , Femenino , Genotipo , Humanos , Inmunosupresores/farmacocinética , Japón , Masculino , Polimorfismo de Nucleótido Simple , Receptor X de Pregnano/genética
5.
Hinyokika Kiyo ; 68(8): 265-269, 2022 Aug.
Artículo en Japonés | MEDLINE | ID: mdl-36071018

RESUMEN

A 65-year-old man was found to have a 1.7 cm right renal mass by follow-up abdominal computed tomography for left total nephrectomy after a traffic accident. The renal mass progressed slowly to 2.2 cm in three years and enhanced magnetic resonance imaging revealed marked T2 weighting hyperintensity of the lesion. Although a radiologist (TK) suggested the diagnosis renal anastomosing hemangioma preoperatively, we could not deny the possibility of renal cell carcinoma completely. Therefore, the patient underwent robot-assisted laparoscopic partial nephrectomy. The tumor was successfully removed without any renal arterial clamping or parenchymal excision. Histopathologically, the lesion was composed of capillary-size blood vessels lined by a single layer of endothelial cells, and was diagnosed as a renal anastomosing hemangioma. There were no signs of postoperative recurrence during the 3 month follow-up.


Asunto(s)
Carcinoma de Células Renales , Hemangioma , Neoplasias Renales , Anciano , Carcinoma de Células Renales/diagnóstico por imagen , Carcinoma de Células Renales/cirugía , Células Endoteliales/patología , Hemangioma/diagnóstico por imagen , Hemangioma/cirugía , Humanos , Neoplasias Renales/diagnóstico por imagen , Neoplasias Renales/cirugía , Masculino , Nefrectomía/métodos
6.
Transpl Int ; 34(7): 1212-1225, 2021 07.
Artículo en Inglés | MEDLINE | ID: mdl-33884674

RESUMEN

Anemia and vitamin D deficiency are associated with allograft failure, and hence, are potential therapeutic targets among kidney transplant recipients (KTRs). We conducted a multicenter, two-by-two factorial, open-label, randomized clinical trial to examine the effects of anemia correction and vitamin D supplementation on 2-year change in eGFR among KTRs (CANDLE-KIT). We enrolled 153 patients with anemia and >1-year history of transplantation across 23 facilities in Japan, and randomly assigned them to either a high or low hemoglobin target (>12.5 vs. <10.5 g/dl) and to either cholecalciferol 1000 IU/day or control. This trial was terminated early based on the planned interim intention-to-treat analyses (α = 0.034). Among 125 patients who completed the study, 2-year decline in eGFR was smaller in the high vs. low hemoglobin group (i.e., -1.6 ± 4.5 vs. -4.0 ± 6.9 ml/min/1.73 m2 ; P = 0.021), but did not differ between the cholecalciferol and control groups. These findings were supported by the fully adjusted mixed effects model evaluating the rate of eGFR decline among all 153 participants. There were no significant between-group differences in all-cause death or the renal composite outcome in either arm. In conclusion, aggressive anemia correction showed a potential to preserve allograft kidney function.


Asunto(s)
Anemia , Trasplante de Riñón , Anemia/tratamiento farmacológico , Suplementos Dietéticos , Humanos , Japón , Vitamina D
7.
J Clin Pharm Ther ; 46(6): 1800-1803, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-34041772

RESUMEN

WHAT IS KNOWN AND OBJECTIVE: We aim to add to the few reports on tacrolimus concentrations in breast milk and in maternal, umbilical vein and neonatal blood after maternal renal transplantation. CASE SUMMARY: In a 30-year-old pregnant woman, the tacrolimus concentration at delivery was the same in maternal, umbilical vein and neonatal blood. The breast milk/maternal blood tacrolimus ratio ranged from 0.40 to 0.64. WHAT IS NEW AND CONCLUSION: The maternal and neonatal blood tacrolimus concentrations at birth are equivalent; thus, one must assume that maternal tacrolimus concentrations directly affect the foetus and/or neonate. Tacrolimus is not detectable in the neonate 3 weeks after birth, suggesting that there is minimal transfer through breast milk.


Asunto(s)
Inmunosupresores/sangre , Trasplante de Riñón , Leche Humana/química , Tacrolimus/sangre , Adulto , Femenino , Humanos , Inmunosupresores/análisis , Recién Nacido , Tacrolimus/análisis , Venas Umbilicales/química
8.
Hinyokika Kiyo ; 67(12): 525-528, 2021 Dec.
Artículo en Japonés | MEDLINE | ID: mdl-34991292

RESUMEN

A 46-year-old woman was referred to our hospital with a left-sided renal tumor pointed out by ultrasonography at the time of a medical checkup.Computed tomography revealed a mass measuring 88×77×68 mm on the upper pole of the left kidney. She was diagnosed with cT2aN0M0 clear cell renal cell carcinoma. Laparoscopic left nephrectomy was performed uneventfully. Histopathological diagnosis was clear cell renal cell carcinoma, G2, v1, pT2. Four months after surgery, lung metastases appeared, and systemic therapy was given sequentially as follows ; sunitinib for 2 months, nivolumab for 8 months, axitinib for 17 months, and pazopanib for 2 months.However, metastases progressed, and a re-administration of nivolumab was planned. The nivolumab re-treatment resulted in a marked reduction in multiple lung metastases despite the previous failure by nivolumab treatment. There are few reports on the therapeutic effect of re-administration of nivolumab. We report a case of successful treatment by re-administration of nivolumab.


Asunto(s)
Carcinoma de Células Renales , Neoplasias Renales , Axitinib , Carcinoma de Células Renales/diagnóstico por imagen , Carcinoma de Células Renales/tratamiento farmacológico , Carcinoma de Células Renales/cirugía , Femenino , Humanos , Neoplasias Renales/diagnóstico por imagen , Neoplasias Renales/tratamiento farmacológico , Neoplasias Renales/cirugía , Persona de Mediana Edad , Nivolumab/uso terapéutico , Sunitinib
9.
BMC Cancer ; 20(1): 302, 2020 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-32293349

RESUMEN

BACKGROUND: Although docetaxel-based chemohormonal therapy (CHT) is one of the standard treatments for castration-resistant prostate cancer (CRPC), pertinent biomarkers and precise mechanisms involved in the resistance for CHT for CRPC remain unknown. We investigated the relationship between chemohormonal resistance and the expression of steroid receptors and Hippo pathway proteins using a docetaxel-resistant prostate cancer (PCa) cell line and human PCa tissues in patients who underwent surgery with and without neoadjuvant therapy. METHODS: A docetaxel-resistant subline (22Rv1-DR) was generated to assess Hippo pathway protein expression and the effect of YAP1 inhibition on cellular characteristics. A tissue microarray with 203 cores from 70 high-risk localized PCa tissues was performed to assess steroid receptor and Hippo pathway protein expressions. RESULTS: Nuclear YAP (nYAP) expression was higher in 22RV-1-DR than in parental 22Rv-1 and YAP1 knockdown suppressed cell proliferation of 22Rv1-DR. Steroid receptor and Hippo pathway protein expressions varied among three different neoadjuvant groups, and nYAP1 expression was the highest in the CHT group. The patients with high nYAP in residual cancer after neoadjuvant CHT had a significantly higher biochemical recurrence (BCR) rate than those with low nYAP1. On multivariate analysis, the high nYAP1 was an independent prognostic factor for BCR. CONCLUSIONS: nYAP expression is a potential biomarker in high-risk patients treated with docetaxel-based CHT. Steroid receptors and Hippo pathway proteins may play a role in the chemohormonal resistance in advanced PCa.


Asunto(s)
Proteínas Adaptadoras Transductoras de Señales/metabolismo , Docetaxel/uso terapéutico , Neoplasia Residual/metabolismo , Neoplasias de la Próstata/metabolismo , Factores de Transcripción/metabolismo , Regulación hacia Arriba , Proteínas Adaptadoras Transductoras de Señales/genética , Línea Celular Tumoral , Núcleo Celular , Proliferación Celular , Técnicas de Silenciamiento del Gen , Humanos , Masculino , Terapia Neoadyuvante , Neoplasia Residual/tratamiento farmacológico , Neoplasias de la Próstata/tratamiento farmacológico , Análisis de Supervivencia , Análisis de Matrices Tisulares , Factores de Transcripción/genética , Proteínas Señalizadoras YAP
10.
Neurourol Urodyn ; 39(6): 1653-1666, 2020 08.
Artículo en Inglés | MEDLINE | ID: mdl-32542707

RESUMEN

AIMS: We develop a novel rabbit urinary diversion model of bladder defunctionalization due to bladder anuria followed by refunctionalization due to urine reperfusion to investigate the molecular biological background. To validate the results, we used reverse transcription-polymerase chain reaction (RT-PCR) to analyze human specimens from defunctionalized bladders in patients receiving dialysis before kidney transplantation. METHODS: Female rabbits were divided into three groups: control, defunctionalized, and refunctionalized. The bilateral ureters were anastomosed to vagina in the defunctionalized and refunctionalized groups at 0 weeks. In the refunctionalized group, the unilateral ureter was reanastomosed to the bladder at 8 weeks. RESULTS: The capacity and compliance of the rabbit bladder in the refunctionalized group were significantly lower than those in the control group at 8 weeks and higher than those in the defunctionalized group at 14 weeks. The significant downregulation of IGFBP2, UPK1B, and CST6 in the defunctionalized group compared with that in the control groups, and the significant downregulation of AGTR2 in the refunctionalized group compared with that in the defunctionalized group in the rabbit bladder-muscle DNA microarray were validated by RT-PCR. Human bladder muscle indicated significant downregulation of UPK1B and CST6 and significant downregulation of IGFBP2 in the defunctionalized group, which is consistent with both rabbit bladder-muscle DNA microarray and rabbit bladder RT-PCR results. CONCLUSIONS: The present study using novel model of bladder defunctionalization followed by refunctionalization indicated the consistent downregulation of UPK1B and CST6 in muscle and the consistent downregulation of IGFBP2 in mucosa in process of bladder defunctionalization, which was validated by human specimens.


Asunto(s)
Anuria/genética , Vejiga Urinaria/metabolismo , Derivación Urinaria , Animales , Anuria/metabolismo , Cistatina M/genética , Cistatina M/metabolismo , Femenino , Humanos , Proteína 2 de Unión a Factor de Crecimiento Similar a la Insulina/genética , Proteína 2 de Unión a Factor de Crecimiento Similar a la Insulina/metabolismo , Trasplante de Riñón/métodos , Masculino , Membrana Mucosa , Conejos , Reperfusión , Uréter/metabolismo , Uréter/cirugía , Uroplaquina Ib/genética , Uroplaquina Ib/metabolismo
11.
Clin Exp Nephrol ; 24(2): 174-184, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-31768865

RESUMEN

BACKGROUND: To evaluate whether serum N-glycan profile can be used as a diagnostic marker of graft rejection after living-donor kidney transplants (KT). METHODS: We retrospectively examined 174 KT recipients at five medical centers. N-Glycan levels were analyzed in postoperative serum samples using glycoblotting combined with mass spectrometry. We developed an integrated score to predict graft rejection based on a combination of age, gender, immunological risk factors, and serum N-glycan levels at post-KT day D1 and D7. Rejection-free survival rates stratified by the sum of integrated scores (D1 + D7) were evaluated using Kaplan-Meier curves. RESULTS: Of 174, 52 showed graft rejection (Rejection-pos. group) and 122 recipients did not show graft rejection (Rejection-neg. group). The integrated scores were significantly higher in the Rejection-pos. group than those of the Rejection-neg. group. Area-under-curve (AUC) value of integrated scores at post-KT D1, and D7 were 0.84 and 0.84, respectively. The sum of integrated scores (D1 + D7) ≥ 0.50 identified graft rejection with 81% sensitivity and 80% specificity; with an AUC value of 0.87. Recipients with higher sum of integrated scores (D1 + D7 ≥ 0.5) had significantly shorter rejection-free survival than those with lower scores. CONCLUSION: Evaluation of serum N-glycosylation profiles can identify recipients who are prone to rejection.


Asunto(s)
Rechazo de Injerto/sangre , Trasplante de Riñón/efectos adversos , Donadores Vivos , Polisacáridos/sangre , Adulto , Biomarcadores/sangre , Femenino , Rechazo de Injerto/etiología , Rechazo de Injerto/patología , Humanos , Japón , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Reproducibilidad de los Resultados , Estudios Retrospectivos , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento
12.
Hinyokika Kiyo ; 66(10): 351-355, 2020 Oct.
Artículo en Japonés | MEDLINE | ID: mdl-33271649

RESUMEN

This case report documents seminal vesicle cystadenoma with concurrent prostate cancer in a 49-yearold man evaluated at follow-up for a high prostate-specific antigen level (12 ng/ml). Transrectal ultrasound-guided prostate biopsy was performed for adenocarcinoma of the prostate (Gleason score 3+4= 7). Staging computed tomography showed a 6.6×5.5×5.0 cm cystic tumorof the seminal vesicle. A possible diagnosis of primary malignant tumor of the seminal vesicle with concurrent organ-confined prostate cancer was considered. However, seminal vesicle tumor biopsy was not performed because the patient underwent open radical prostatectomy with the resection of the seminal vesicle tumor. Histopathologic examination of the seminal vesicle and the prostate revealed cystadenoma (Gleason score 4+3=7) and adenocarcinoma (stage pT2cN0). Neither recurrence of the cystadenoma nor biochemical recurrence of the prostate cancer was observed 5 years and 6 months after the surgery.


Asunto(s)
Cistoadenoma , Neoplasias de la Próstata , Humanos , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia , Estadificación de Neoplasias , Antígeno Prostático Específico , Prostatectomía , Neoplasias de la Próstata/patología , Vesículas Seminales/patología
13.
Hinyokika Kiyo ; 66(1): 1-4, 2020 Jan.
Artículo en Japonés | MEDLINE | ID: mdl-32028747

RESUMEN

The initial results robot-assisted pyeloplasty (RAP) performed on 6 patients were compared with those of laparoscopic pyeloplasty (LP) for ureteropelvic junction obstruction performed on 26 patients in a Japanese regional center. The median operating time, estimated blood loss, time to oral intake, time to start walking, and hospital stay were not significantly different between the groups. There was no difference in the rate of complications of Clavien-Dindo≥grade III between the two groups. Although the number of entered patients was small, the results indicated that RAP is feasible with favorable outcome.


Asunto(s)
Laparoscopía , Procedimientos Quirúrgicos Robotizados , Obstrucción Ureteral , Humanos , Pelvis Renal , Resultado del Tratamiento , Obstrucción Ureteral/cirugía , Procedimientos Quirúrgicos Urológicos
14.
Clin Exp Nephrol ; 23(12): 1398-1406, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31493185

RESUMEN

BACKGROUND: We evaluated the impact of persistent preformed donor-specific antibody (DSA) and de novo DSA (dnDSA) detected at 1 year posttransplantation on long-term death-censored graft survival. METHODS: One hundred and sixty adult patients who received living kidney allograft with pretransplant-negative T-cell complement-dependent cytotoxicity crossmatch (CDCXM), and without periodic screening for DSA, were eligible for this study. All enrolled patients were retrospectively tested for DSA using the Luminex assay. The presence of DSA was analyzed in stored serum samples collected at 1 year posttransplantation. If the recipients had DSA, it was analyzed in the pretransplant serum sample. The detection of DSA solely in the 1 year posttransplant sample was defined as dnDSA, and DSA detection in both pretransplant and 1 year posttransplant samples was defined as persistent preformed DSA. RESULTS: DSAs were identified in 14 (8.8%) of the 160 patients. Seven patients had persistent preformed DSA, 6 had dnDSA, and 1 had both persistent preformed and dnDSA at 1 year posttransplantation. Death-censored allograft survival rates of patients with DSA versus those without DSA at 7 and 11 years were 77.9 vs. 97.8% and 60.6 vs. 89.2%, respectively. The graft survival rate was lower in patients with persistent preformed DSA and/or dnDSA. Each case of preformed DSA and dnDSA was associated with long-term graft survival. CONCLUSION: The presence of persistent preformed DSA or dnDSA at 1 year posttransplantation may be a predictor of long-term graft survival. Further study is needed to evaluate whether periodic screening for DSA improves long-term graft survival.


Asunto(s)
Supervivencia de Injerto , Antígenos HLA/inmunología , Isoanticuerpos/sangre , Trasplante de Riñón , Adulto , Anciano , Anciano de 80 o más Años , Biomarcadores/sangre , Femenino , Antígenos HLA/genética , Prueba de Histocompatibilidad , Humanos , Japón , Trasplante de Riñón/efectos adversos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Tiempo , Resultado del Tratamiento , Adulto Joven
15.
Hinyokika Kiyo ; 65(10): 397-402, 2019 Oct.
Artículo en Japonés | MEDLINE | ID: mdl-31697884

RESUMEN

A 36-year-old female was referred to our hospital for a giant abdominal mass found by ultrasound examination. A computed tomographic scan showed a large retroperitoneal mass measuring 11 cm in diameter suspected to be liver invasion,a right atrial and inferior vena cava (IVC) tumor thrombus with obstruction of hepatic vein junction of IVC,and small lung metastases. She was diagnosed with cT4N0M1 adrenocortical carcinoma (ACC) by a needle biopsy and radiographic examination. Right adrenalectomy and thrombectomy were successfully performed without cardiac arrest and without liver dissection. The operative time was 485 minutes,and the estimated blood loss was 7,533 ml. No major peri- or postoperative complications were observed. For the residual lung mass,a first line combination chemotherapy with etoposide,doxorubicin,cisplatin and mitotane followed by a second line chemotherapy with gemcitabine and capecitabine were administered. She has been alive with disease for 45 months under mitotane treatment against residual lung metastases. In conclusion,extended surgery could be successfully performed for advanced ACC with right atrium and IVC tumor thrombus. Although careful planning is needed for successful surgery,combination therapy with extended surgery and subsequent systematic chemotherapy may provide a substantial benefit in patients with advanced ACC.


Asunto(s)
Neoplasias de la Corteza Suprarrenal , Carcinoma Corticosuprarrenal , Trombosis , Neoplasias de la Corteza Suprarrenal/complicaciones , Adrenalectomía , Carcinoma Corticosuprarrenal/complicaciones , Adulto , Femenino , Humanos , Trombectomía , Trombosis/etiología , Vena Cava Inferior
16.
Hinyokika Kiyo ; 65(6): 219-222, 2019 Jun.
Artículo en Japonés | MEDLINE | ID: mdl-31501389

RESUMEN

We report a case of idiopathic penile pyoderma gangrenosum that was successfully treated with corticosteroid treatment without penectomy. A 67-year-o1d man with induration and tenderness of the penile shaft visited a local hospital. A penile abscess was suspected on magnetic resonance imaging, and needle biopsy did not reveal malignancy. After the tension of the penile shaft had worsened, he was referred to our hospital where surgical drainage and re-biopsy were performed. Microbiological cultures revealed no growth, and pathological examination revealed no evidence of malignancy. Despite drainage, the abscess recurred on postoperative day 18. With a working diagnosis of penile pyoderma gangrenosum, we initiated prednisolone 30 mg once daily followed by taper and performed a second surgical drainage, leaving the wound open to heal by secondary intention. Wound discharge declined gradually, and no recurrence of abscess has yet been observed. Pyoderma gangrenosum is clinically diagnosed when subcutaneous chronic inflammatory findings are present without concurrent bacterial infection. Corpus cavernosum abscess presenting as the initial symptom of pyoderma gangrenosum is rare. Most cases of recurrent corpus cavernosum abscess eventually result in total penectomy. In this case, we successfully avoided penectomy by suspecting pyoderma gangrenous and initiating prednisolone treatment appropriately.


Asunto(s)
Glucocorticoides , Prednisolona , Piodermia Gangrenosa , Absceso , Anciano , Drenaje , Glucocorticoides/uso terapéutico , Humanos , Imagen por Resonancia Magnética , Masculino , Prednisolona/uso terapéutico , Piodermia Gangrenosa/tratamiento farmacológico
17.
Hinyokika Kiyo ; 65(9): 363-367, 2019 Sep.
Artículo en Japonés | MEDLINE | ID: mdl-31697878

RESUMEN

A 68-year-old man was referred to our hospital with a right-sided renal tumor identified by ultrasonography at the time of his medical check-up. Computed tomography revealed a well-circumscribed but distorted mass measuring 64×45×57 mm in the right kidney with para-aortic lymph node swelling. Laparoscopic right nephrectomy with para-aortic lymphadenectomy was performed. Histopathological diagnosis was mucinous tubular and spindle cell carcinoma (MTSCC) (pT3a) without lymph node metastasis (pN0). Postoperatively, metastases were identified in the lungs, and the vertebral and iliac bones. The patient was treated with axitinib. The lung nodule progressed and left sacrum metastases appeared even after treatment with axitinib. Therefore, nivolumab was administered as second-line treatment. The metastases in the lungs, as well as vertebral and iliac bone showed complete response to this therapy. MTSCC of the kidney is a rare low-grade renal cell carcinoma without any established systemic therapy for metastatic or unresectable lesions. We report a case of metastatic MTSCC in a patient who showed a favorable response to nivolumab treatment. This is the first report to describe successful treatment of metastatic MTSCC with anti-programmed cell death 1 antibody.


Asunto(s)
Adenocarcinoma Mucinoso , Neoplasias Renales , Nivolumab/uso terapéutico , Adenocarcinoma Mucinoso/terapia , Anciano , Humanos , Neoplasias Renales/terapia , Masculino , Nefrectomía
18.
Jpn J Clin Oncol ; 48(8): 765-770, 2018 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-29931077

RESUMEN

OBJECTIVE: To evaluate the positive surgical margin rates and locations in radical prostatectomy among three surgical approaches, including open radical prostatectomy, laparoscopic radical prostatectomy and robot-assisted radical prostatectomy. METHODS: We retrospectively reviewed clinical outcomes at our institution of 450 patients who received radical prostatectomy. Multiple surgeons were involved in the three approaches, and a single pathologist conducted the histopathological diagnoses. Positive surgical margin rates and locations among the three approaches were statistically assessed, and the risk factors of positive surgical margin were analyzed. RESULTS: This study included 127, 136 and 187 patients in the open radical prostatectomy, laparoscopic radical prostatectomy and robot-assisted radical prostatectomy groups, respectively. The positive surgical margin rates were 27.6% (open radical prostatectomy), 18.4% (laparoscopic radical prostatectomy) and 13.4% (robot-assisted radical prostatectomy). In propensity score-matched analyses, the positive surgical margin rate in the robot-assisted radical prostatectomy was significantly lower than that in the open radical prostatectomy, whereas there was no significant difference in the positive surgical margin rates between robot-assisted radical prostatectomy and laparoscopic radical prostatectomy. In the multivariable analysis, PSA level at diagnosis and surgical approach (open radical prostatectomy vs robot-assisted radical prostatectomy) were independent risk factors for positive surgical margin. The apex was the most common location of positive surgical margin in the open radical prostatectomy and laparoscopic radical prostatectomy groups, whereas the bladder neck was the most common location in the robot-assisted radical prostatectomy group. The significant difference of positive surgical margin locations continued after the propensity score adjustment. CONCLUSIONS: Robot-assisted radical prostatectomy may potentially achieve the lowest positive surgical margin rate among three surgical approaches. The bladder neck was the most common location of positive surgical margin in robot-assisted radical prostatectomy and apex in open radical prostatectomy and laparoscopic radical prostatectomy. Although robot-assisted radical prostatectomy may contribute to the reduction of positive surgical margin, dissection of the bladder neck requires careful attention to avoid positive surgical margins.


Asunto(s)
Laparoscopía , Márgenes de Escisión , Prostatectomía , Neoplasias de la Próstata/cirugía , Robótica , Anciano , Humanos , Incidencia , Laparoscopía/efectos adversos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Cuidados Preoperatorios , Puntaje de Propensión , Antígeno Prostático Específico , Prostatectomía/efectos adversos , Neoplasias de la Próstata/patología , Estudios Retrospectivos , Factores de Riesgo
20.
BMC Urol ; 18(1): 32, 2018 May 08.
Artículo en Inglés | MEDLINE | ID: mdl-29739368

RESUMEN

BACKGROUND: Less evidence is known about the role of early changes in serum biomarker after androgen deprivation therapy (ADT) in patients with metastatic hormone-sensitive prostate cancer (mHSPC). Here we evaluated the impact of pre-treatment prognostic factors and early changes in serum biomarkers on prostate specific antigen (PSA) progression-free and overall survival rates in mHSPC. METHODS: We retrospectively reviewed the medical records of 60 mHSPC patients (median age 72 years) treated with ADT whose laboratory data at baseline and following 12 weeks were available. RESULTS: Forty-four patients (73%) had PSA progression and 27 patients (45.0%) died during a median follow-up of 34 months. The multivariable Cox hazard model demonstrated that a log-transformed baseline PSA level (p = 0.003) and an extent of bone disease (EOD) score of ≥3 (p = 0.004) were statistically associated with an increased risk for PSA progression whereas one unit increase in a log-transformed PSA change (baseline-12 weeks) was associated with a decreased risk for PSA progression (p = 0.004). For overall survival, a high level of alkaline phosphatase (ALP) at 12 weeks was associated with increased risk (p = 0.030) whereas a one-unit increase in the log-transformed PSA change was associated with decreased risk (p = 0.001). CONCLUSIONS: An increased level of PSA at baseline, or an EOD score of ≥3 may be a good predictor of PSA progression, and a high level of ALP at 12 weeks may be a risk predictor of death. A larger decline in PSA at 12 weeks from the baseline was associated with both PSA progression-free and overall survival time. Early changes in serum biomarkers may be useful in predicting poor outcomes in patients with mHSPC who are initially treated with ADT.


Asunto(s)
Antagonistas de Andrógenos/uso terapéutico , Biomarcadores de Tumor/sangre , Neoplasias de la Próstata/sangre , Neoplasias de la Próstata/tratamiento farmacológico , Anciano , Anciano de 80 o más Años , Supervivencia sin Enfermedad , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Neoplasias de la Próstata/diagnóstico , Estudios Retrospectivos , Resultado del Tratamiento
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA