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1.
Case Rep Nephrol Dial ; 13(1): 120-128, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37900927

RESUMO

The patient was a woman in her 60s. She was found to have proteinuria on a health checkup. She did not have any particular subjective symptoms, and no definitive diagnosis was made, despite serological findings indicative of immune abnormalities. A renal biopsy was performed. Light microscopy of renal tissue section revealed mesangial proliferative nephritis. Electron microscopic findings included electron-dense deposits and fibrillar/tubular structures with a diameter of 20-30 nm. These findings suggested the presence of cryoglobulin (CG), but CG was not detected in qualitative or quantitative hematologic tests. Thus, the serum samples were stored at 37°C for a long period of time and then cooled to 4°C. When the obtained precipitates were examined, CG was successfully detected. CG that precipitates only after a long period of time is referred to as slow cryoglobulin (sCG), and sCG is extremely rare. The present case is the first documented case, to our knowledge, of renal disorders caused by sCG. It should be noted that there are some cases in which it takes much time for CG to precipitate. Thus, when CG cannot be detected, it is necessary to spend much time to determine whether CG precipitates.

2.
J Radiat Res ; 63(1): 107-114, 2022 Jan 20.
Artigo em Inglês | MEDLINE | ID: mdl-34718687

RESUMO

Oral administration of a water-soluble iodine contrast agent (gastrografin) was reported to assist in the appropriate contouring of the small intestine on computed tomography (CT)-based radiotherapy (RT) planning. The efficacy and optimal dose of gastrografin in CT-based image-guided brachytherapy (IGBT) for cervical cancer remain unknown. This study aimed to investigate the efficacy of pretreatment oral administration of gastrografin at a small dose of 50 ml in CT-based IGBT for cervical cancer. A total of 422 sessions in 137 patients who underwent CT-based IGBT with 50 ml of oral gastrografin (concentration, 3% or 4%) were analyzed. Preparation of gastrografin was judged as effective when the small intestine was contrast-enhanced at the area where the small intestine was in contact with the uterus/adnexa. About 287 out of 422 sessions (68%) were judged as effective with gastrografin preparation. The 135 ineffective sessions were considered as follows: (i) the contrast enhancement of the small intestine was not confirmed (n = 36), (ii) the small intestine was not in contact with the uterus/adnexa despite the confirmation of the contrast enhancement of the small intestine (n = 34), and (iii) gastrografin was absent in the small intestine at the area in contact with the uterus/adnexa, even when gastrografin was observed in the small intestine at the area not in contact with the uterus/adnexa (n = 65). In conclusion, pretreatment oral administration of a small dose gastrografin achieved moderate efficacy for accurate contouring of the small intestine close to the uterus/adnexa in CT-based IGBT for cervical cancer.


Assuntos
Braquiterapia , Neoplasias do Colo do Útero , Braquiterapia/métodos , Meios de Contraste , Diatrizoato de Meglumina , Feminino , Humanos , Tomografia Computadorizada por Raios X/métodos , Neoplasias do Colo do Útero/diagnóstico por imagem , Neoplasias do Colo do Útero/radioterapia
3.
J Appl Clin Med Phys ; 22(10): 66-72, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34415658

RESUMO

PURPOSE: With a new tumor-tracking system (Synchrony®) for tomotherapy (Radixact®), the internal and set-up margins can be tightened, like cyberknife (CyberKnife®), in the planning of stereotactic body radiotherapy (SBRT) for prostate cancer. Recently, the usefulness of placing a hydrogel spacer between the prostate and rectum has been established in prostate radiotherapy. We evaluated the characteristics of tomotherapy plans with the tumor-tracking system and compared them with cyberknife SBRT plans for localized prostate cancer using a hydrogel spacer. METHODS: In 20 patients, two plans were created and compared using tomotherapy and cyberknife. All patients underwent hydrogel spacer injection behind the prostate before simulation CT and MRI for fusion. For all plans, 36.25 Gy in 7.25-Gy fractions for a minimum coverage dose of 95% of planning target volume (PTV) (D95%) was prescribed. The D99% of PTV and D0.1 ml of the PTV, urethra, bladder, and rectum were intended to be > 90%, 110-130%, 100-110%, <110%, and <100%, respectively, of the prescribed doses. RESULTS: All plans using tomotherapy and cyberknife achieved the intended dose constraints. The cyberknife plans yielded better median PTV-V110% (volume of PTV covered by 110% isodose line, 54.8%), maintaining lower median D0.1 ml of the urethra (37.5 Gy) and V80% of the bladder (11.0 ml) compared to the tomotherapy plans (39.0%; p < 0.0001, 38.2 Gy; p < 0.0001, and 18.3 ml; p < 0.0001, respectively). The tomotherapy plans were superior to the cyberknife plans for the rectum (V80% = 0.4 vs. 1.0 ml, p < 0.001; D1ml = 26.4 vs. 29.0 Gy, p = 0.013). CONCLUSIONS: Our results suggested that tomotherapy with the tumor-tracking system has reasonable potential for SBRT for localized prostate cancer using a hydrogel spacer.


Assuntos
Neoplasias da Próstata , Radiocirurgia , Radioterapia de Intensidade Modulada , Humanos , Hidrogéis , Masculino , Neoplasias da Próstata/diagnóstico por imagem , Neoplasias da Próstata/radioterapia , Neoplasias da Próstata/cirurgia , Dosagem Radioterapêutica , Planejamento da Radioterapia Assistida por Computador
4.
J Radiat Res ; 61(6): 993-998, 2020 Nov 16.
Artigo em Inglês | MEDLINE | ID: mdl-33210148

RESUMO

With the newly-developed static-port forward-planning (FP) mode of tomotherapy, the ratio of the dose of the planning target volume (PTV) periphery to the maximum dose can be easily adjusted by modifying leaf margins when planning stereotactic body radiotherapy (SBRT). The purpose of this study was to evaluate the characteristics of FP plans compared to helical intensity-modulated radiotherapy (IMRT) and helical 3D conformal radiotherapy (3DCRT) plans of SBRT for lung tumors. The three plans were created for 14 tumors in 11 patients. For 13 tumors, 60 Gy in 7.5-Gy fractions was prescribed for a minimum coverage dose of 95% of the PTV (D95). The prescribed isodose line (PIL) was intended to be 60-80% of the maximum dose. Nine angles were used for the FP plans. The median D98 and D50 of the internal target volume for FP, helical-IMRT and helical-3DCRT plans were 70.4, 71.4 and 60.5 Gy, respectively (P < 0.001), and 77.7, 75.7 and 62.3 Gy, respectively (P < 0.0001). The median PIL and the lung volume receiving ≥20 Gy (V20) were 73.4, 73.4 and 94.3%, respectively (P < 0.0001), and 4.7, 4.0 and 5.7%, respectively (P < 0.0001). These parameters were not significantly different between the FP and helical-IMRT plans. The median beam-on times were 238.6, 418.9 and 197.1 s, respectively (P < 0.0001). The FP plans reduced the beam-on time by 43% compared to the helical-IMRT plans. The dose distribution of the FP plans was comparable to that of the helical-IMRT plans. The helical-3DCRT plans could not adjust PIL to be 60-80%.


Assuntos
Neoplasias Pulmonares/radioterapia , Radiocirurgia/métodos , Planejamento da Radioterapia Assistida por Computador/métodos , Radioterapia Conformacional/métodos , Radioterapia de Intensidade Modulada/métodos , Idoso , Idoso de 80 Anos ou mais , Desenho de Equipamento , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Radiometria/métodos , Dosagem Radioterapêutica , Tomografia Computadorizada por Raios X
5.
Case Rep Endocrinol ; 2020: 2808101, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32158565

RESUMO

A 47-year-old woman with a history of diabetes mellitus (DM) and obesity was admitted to our hospital for glucose control. She was detected to have hypertension (HT) and diagnosed with primary aldosteronism (PA) based on the high level of aldosterone to renin ratio and the results of the upright furosemide-loading test according to the criteria of the Japanese Society of Hypertension (JSH) guidelines. Computed tomography revealed left renal tumor and adrenocortical adenoma. She underwent left nephrectomy and adrenalectomy. The pathological findings were clear-cell renal cell carcinoma (RCC) and nonfunctional adrenocortical adenoma. Her nonneoplastic adrenal tissue histologically revealed CYP11B2-positive multiple adrenocortical micronodules (MNs) and concomitant paradoxical hyperplasia of the zona glomerulosa. Therefore, MNs were thought to be responsible for PA in this patient. After surgery, HT was improved, and the result of upright furosemide-loading test after 12 months of surgery did not fulfill the criteria of PA according to the JSH guidelines. However, the adrenocorticotrophic hormone stimulation test was positive; considering the possibility of slight aldosterone overproduction from the right adrenal gland, the administration of spironolactone was started. Herein, we report a rare case of RCC in conjunction with PA histologically associated with MNs.

6.
J Radiat Res ; 60(1): 98-108, 2019 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-30124892

RESUMO

Adult T-cell leukemia/lymphoma (ATL) is an aggressive peripheral T-cell neoplasm that occurs only in patients with human T-cell leukemia virus type 1. No large study or randomized trial investigating radiotherapy (RT) for ATL has been performed. We retrospectively reviewed 55 courses of RT for 41 consecutive patients with ATL who underwent RT between 2000 and 2016 at our institutions. The results showed that RT for local ATL lesions can achieve symptomatic improvement in 92% of cases. Local remission, either complete remission (CR) or partial response (PR), was achieved in 100% of the patients (CR: 89%, PR: 11%) with ≥40 Gy irradiation. CR or PR was achieved in 71% (CR: 29%, PR: 43%) with 30-39 Gy and in 73% (CR: 6.7%, PR: 67%) with ≤29 Gy irradiation. The mean total radiation dose in the CR and PR groups differed significantly (38 vs 25 Gy, P = 0.0002). The maximum acute toxicity was Grade 0-2 in all patients, except for one patient experienced Grade 3 radiation dermatitis. In-field relapses occurred in 36% of patients, and the frequency of in-field relapses was 11%, 30% and 71% among those who achieved CR, PR and SD, respectively. All 9 patients who received total skin irradiation experienced cutaneous relapses, with a median of 63 days (range, 7-210 days). Almost all (39 of 41) patients with ATL experienced out-of-field progression after RT. In conclusion, RT was confirmed to be effective and safe for palliative treatment of local ATL lesions.


Assuntos
Leucemia-Linfoma de Células T do Adulto/radioterapia , Dosagem Radioterapêutica , Adulto , Idoso , Idoso de 80 Anos ou mais , Relação Dose-Resposta à Radiação , Feminino , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/patologia , Intervalo Livre de Progressão , Resultado do Tratamento
7.
Case Rep Nephrol Dial ; 8(2): 147-154, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30197903

RESUMO

BACKGROUND: Oxalate nephropathy is a rare disease. Especially chronic oxalate nephropathy still has many unknown aspects as compared to acute oxalate nephropathy with relatively well-known causality. CASE PRESENTATION: The patient was a 70-year-old woman who had a history of small bowel resection 25 years before, cholecystectomy 10 years before, and renal stones (calcium oxalate stones) 7 years before. She had been suffering from chronic diarrhea and had been treated by a local physician. The patient was found to have renal dysfunction (creatinine 3.09 mg/dL, eGFR 12.3 mL/min/1.73 m2, hemoglobin 7.8 g/dL) and was referred to our department. The patient was admitted to our hospital for further investigation. Renal ultrasound showed hepatorenal echo contrast in an opposite manner and clear contrast between the renal cortex and medullary pyramid. Renal biopsy was performed, and histological examination showed tubulointerstitial disorder due to deposition of calcium oxalate. Daily urinary excretion of calcium oxalate was significantly increased. The patient was encouraged to drink water and administered vitamin B6, citric acid, K and Na hydrate. Thereafter, her symptoms improved. CONCLUSION: Case reports of chronic oxalate neuropathy are rare in the literature, and its underlying mechanism has not been understood. Our patient had a history of small bowel resection and cholecystectomy. We considered that her short bowel syndrome had influenced the development of calcium oxalate nephropathy.

8.
J Radiat Res ; 59(1): 67-76, 2018 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-29186565

RESUMO

This study evaluated the oncologic outcomes and complications of cervical cancer patients in terms of CT-based image-guided brachytherapy (IGBT) parameters. Of 68 cervical cancer patients treated with definitive radiotherapy/concurrent chemoradiotherapy, most received whole-pelvis external beam RT (EBRT) of 40 Gy in 20 fractions, pelvic EBRT with central shield of 10 Gy in 5 fractions, and CT-based IGBT of 18 Gy in 3 fractions prescribed to point A. Cumulative EBRT and IGBT doses were calculated as the total equivalent dose in 2 Gy fractions (EQD2). The median follow-up was 31 (3-52) months. The 2-year overall survival, local control, pelvic control, and disease-free survival rates of the 68 patients were 92%, 83%, 82% and 73%, respectively. The HR-CTV D90, length from the tandem axis to left/right margin of the HR-CTV (T-LR), and HR-CTV volume were significant IGBT parameters for predicting local/pelvic control. Patients who received an HR-CTV D90 of >60 Gy, compared with ≤60 Gy, had significantly better local/pelvic control. Furthermore, 70 Gy was a marginally significant HR-CTV D90 cut-off affecting local control. T-LR was an independent IGBT parameter predicting local/pelvic control on multivariate analysis. Three patients developed Grade 3 or higher treatment-related complications. The D2cm3 of organs at risk were not significant predictors of complications. Future challenges for further improving outcomes include additional interstitial needles for irregularly shaped HR-CTVs, and moderate dose escalation, especially for patients with poor tumor responses.


Assuntos
Braquiterapia , Radioterapia Guiada por Imagem , Tomografia Computadorizada por Raios X , Neoplasias do Colo do Útero/diagnóstico por imagem , Neoplasias do Colo do Útero/radioterapia , Adulto , Idoso , Idoso de 80 Anos ou mais , Braquiterapia/efeitos adversos , Intervalo Livre de Doença , Relação Dose-Resposta à Radiação , Feminino , Humanos , Estimativa de Kaplan-Meier , Pessoa de Meia-Idade , Análise Multivariada , Tomografia Computadorizada por Raios X/efeitos adversos , Resultado do Tratamento
10.
Gan To Kagaku Ryoho ; 42(10): 1156-61, 2015 Oct.
Artigo em Japonês | MEDLINE | ID: mdl-26489545

RESUMO

Fifteen years has passed since the NCI announced the clinical importance of concurrent chemoradiotherapy (CCRT) in radiotherapy for patients with locoregionally advanced uterine cervical cancer. Numerous clinical trials have been performed to further improve the outcomes of CCRT. In addition to investigations of chemotherapeutic regimens and schedules, adaptation of novel radiotherapy methods such as image-guided brachytherapy (IGBT) and intensity-modulated radiotherapy (IMRT) is encouraged in CCRT for cervical cancer.


Assuntos
Quimiorradioterapia , Neoplasias do Colo do Útero/terapia , Quimiorradioterapia/efeitos adversos , Feminino , Humanos , Metástase Linfática , Terapia de Alvo Molecular , Dosagem Radioterapêutica , Radioterapia de Intensidade Modulada , Neoplasias do Colo do Útero/patologia
11.
Ann Nucl Med ; 29(10): 848-53, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26266885

RESUMO

OBJECTIVE: The aim of the present study was to consider the safety and efficacy of concurrent use of strontium-89 (Sr-89) with external beam radiotherapy (EBRT) for multiple bone metastases, including lesions that require urgent therapy. METHODS: A retrospective review was performed of a consecutive series of patients who received Sr-89 for multiple bone metastases. Forty-five patients with multiple bone metastases received Sr-89 injection. Since 17 of the 45 patients had osteolytic bone lesions requiring emergent EBRT, they underwent concurrent use of Sr-89 with EBRT (concurrent group). The remaining 28 patients, none of whom had osteolytic lesions requiring urgent EBRT, were given Sr-89 injection only (singularity group). The injection of Sr-89 was to be given during EBRT, or on the day before the first day of EBRT. The dose of EBRT was 30 Gy in 10 fractions or 40 Gy in 20 fractions. Adverse events were evaluated according to hematological toxicity as measured by the Common Terminology Criteria for Adverse Events (V4.0). To assess efficacy, we checked changes in the pain scale and analgesic drug dosages, and the presence or absence of serious complications from bone metastases. RESULTS: Fifteen of 17 patients (88.2%) in the concurrent group and 17 of 28 patients (60.7%) in the singularity group reported bone pain relief. A statistically significant difference was found between the two groups, and severe complications (spinal cord compression and pathological fracture) from bone metastases could be prevented in all patients in the concurrent group. Severe hematological toxicity (grade 3 or higher) was not observed in the two groups. There was no statistical difference between the two groups. No one required additional intervention. The adverse events were tolerable. CONCLUSIONS: The results of our study suggest that concurrent use of Sr-89 with EBRT for multiple bone metastases can be performed safely if it is carried out with care, and that it may be an effective therapy in cases requiring emergency treatment.


Assuntos
Neoplasias Ósseas/radioterapia , Neoplasias Ósseas/secundário , Radioterapia Assistida por Computador/métodos , Radioisótopos de Estrôncio/uso terapêutico , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias Ósseas/complicações , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Dor/complicações , Radioterapia Assistida por Computador/efeitos adversos , Estudos Retrospectivos , Segurança , Radioisótopos de Estrôncio/efeitos adversos
12.
Ther Apher Dial ; 16(6): 483-521, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23190510

RESUMO

A nationwide statistical survey of 4226 dialysis facilities was conducted at the end of 2010, and 4166 facilities (98.6%) responded. The number of new patients introduced into dialysis was 37,512 in 2010. This number has decreased for two consecutive years since it peaked in 2008. The number of patients who died in 2010 was 28,882, which has been increasing every year. The number of patients undergoing dialysis at the end of 2010 was 298,252, which is an increase of 7591 (2.6%) compared with that at the end of 2009. The number of dialysis patients per million at the end of 2010 was 2329.1. The crude death rate of dialysis patients in 2010 was 9.8%, and has been gradually increasing. The mean age of the new patients introduced into dialysis was 67.8 years and the mean age of the entire dialysis patient population was 66.2 years. Regarding the primary disease of the new patients introduced into dialysis, the percentage of patients with diabetic nephropathy was 43.6%, which is a slight decrease from that in the previous year (44.5%). Patients with diabetic nephropathy as the primary disease accounted for 35.9% of the entire dialysis patient population, which approaches the percentage of patients with chronic glomerulonephritis as the primary disease (36.2%). The percentage of patients who had undergone carpal tunnel release surgery (CTx) was 4.3%, which is a slight decrease from that at the end of 1999 (5.5%). The decrease in the percentage of patients who had undergone CTx was significant among the patients with dialysis durations of 20-24 years (1999, 48.0%; 2010, 23.2%). A total weekly Kt/V attributable to peritoneal dialysis and their residual functional kidney was 1.7 or higher for 59.4% of patients who underwent peritoneal dialysis.


Assuntos
Nefropatias/terapia , Diálise Peritoneal/estatística & dados numéricos , Diálise Renal/estatística & dados numéricos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Síndrome do Túnel Carpal/cirurgia , Criança , Pré-Escolar , Nefropatias Diabéticas/epidemiologia , Nefropatias Diabéticas/terapia , Feminino , Glomerulonefrite/epidemiologia , Glomerulonefrite/terapia , Humanos , Japão , Nefropatias/epidemiologia , Nefropatias/fisiopatologia , Masculino , Pessoa de Meia-Idade , Adulto Jovem
13.
Clin Exp Nephrol ; 16(5): 805-10, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22911115

RESUMO

We report on how adefovir-induced membranous nephropathy related to hepatitis B was caused by lamivudine-resistant virus after a liver transplant due to Byler's disease. In 1980, a 2-year-old girl was diagnosed with Byler's disease (familial progressive familial intrahepatic cholestasis). In 1994 (at the age of 14 years) she underwent a liver transplant with her father as the donor. In 2003, hematuria and proteinuria appeared and shortly afterwards her renal function rapidly decreased. A renal biopsy showed atypical membranous nephropathy, which suggested the possibility of a secondary renal disease. The patient had suffered from chronic hepatitis type B (HBV). In 2001 she was administered lamivudine which is an antiviral drug; it was around this time that hematuria and proteinuria appeared as well as an increase of the virus titer. We believed the HBV-related membranous nephropathy was the cause of the virus titer and the renal histology. We concluded that the patient's condition had become resistant to lamivudine medication. Therefore, in February 2004 we administered adefovir, a new drug at the time, to treat the HBV. In April 2004, the HB virus titer decreased and the hematuria and proteinuria decreased. The patient's renal function also showed improvement. HBV-associated nephropathy is caused by HBV antigen deposition in the glomeruli. Generally the first choice of treatment is antivirus therapy. There are many reports demonstrating that administration of interferon and lamivudine are effective; however, there are few reports that show adefovir as an effective treatment for HBV-associated nephropathy.


Assuntos
Adenina/análogos & derivados , Farmacorresistência Viral , Glomerulonefrite Membranosa/induzido quimicamente , Transplante de Fígado , Organofosfonatos/efeitos adversos , Adenina/efeitos adversos , Adolescente , Adulto , Pré-Escolar , Colestase Intra-Hepática/cirurgia , Feminino , Hepatite B Crônica/tratamento farmacológico , Humanos , Lamivudina/uso terapêutico , Masculino
14.
Transpl Int ; 25(9): 956-66, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22775391

RESUMO

The long-term fate of aged liver allografts in young recipients who received grafts from older donors is unknown. We evaluated graft aging by analyzing hepatocytic telomere length and karyotypic changes. Seventeen pediatric individuals who underwent living-donor liver transplantation for congenital biliary diseases were selected. At a median of 10.4 years post-transplant, ten had tolerated grafts with weaned off immunosuppressants, and seven had idiopathic post-transplantation hepatitis. Fluorescence in situ hybridization was used to evaluate the telomere signal intensity (TI) and karyotypic changes. First, we measured predictive age-dependent TI decline with regression analysis of donor livers. The mean TI at the earliest (within a year) and latest biopsies was significantly lower than the predicted TI of the studied allografts. With univariate analysis, a higher abnormal karyotype ratio in the donor liver was correlated with development of idiopathic post-transplantation hepatitis. With multivariate analysis that included clinical parameters, a greater TI decline at the earliest biopsy was correlated with the development of idiopathic post-transplantation hepatitis. In conclusion, graft aging as measured by TI decline and donor abnormal karyotype ratio was associated with idiopathic post-transplantation hepatitis of long-term transplanted liver allografts.


Assuntos
Hepatócitos/patologia , Falência Hepática/genética , Falência Hepática/terapia , Transplante de Fígado/métodos , Telômero/ultraestrutura , Adolescente , Aneuploidia , Biópsia , Criança , Pré-Escolar , Feminino , Seguimentos , Sobrevivência de Enxerto , Hepatite/complicações , Hepatite/etiologia , Humanos , Imunossupressores , Hibridização in Situ Fluorescente , Lactente , Cariotipagem , Masculino , Análise Multivariada , Transplante Homólogo , Resultado do Tratamento
15.
Clin Lung Cancer ; 13(5): 385-90, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22285568

RESUMO

BACKGROUND: The insulin-like growth factor (IGF) pathway plays an important role in cell proliferation, differentiation, and apoptosis, and IGF induces those effects mainly through IGF receptor-1 (IGF-1R). The activities of IGF are strictly regulated by a family of IGF binding proteins (IGFBP), especially IGFBP3, a major serum carrier protein for IGF. PATIENTS AND METHODS: Between January 2006 and February 2009, in our hospital, 191 patients were histologically diagnosed as having non-small-cell lung cancer (NSCLC), and 74 patients were treated by chemotherapy alone. We examined immunohistochemical expression of both IGF-1R and IGFBP3 in 68 patients who were definitively diagnosed as having adenocarcinoma or squamous cell carcinoma among the 74 patients. RESULTS: The clinical characteristics of the included patients were as follows: median age was 68 years (range, 29-86 years); men vs. women, 40 vs. 28; stage III vs. IV, 18 vs. 50; performance status 0-1 vs. 2-4, 58 vs. 10; smoker vs. non-smoker, 44 vs. 24; and squamous cell carcinoma vs. adenocarcinoma, 13 vs. 55. Expression of IGF-1R and IGFBP3 was observed in 37 (54%) and 11 patients (16%), respectively. IGF-1R expression was detected more frequently in patients with squamous cell carcinoma (100%) than in patients with adenocarcinoma (44%) (P < .001), although IGFBP3 expression was not significantly associated with any clinical variables. Among all factors, including IGF-1R and IGFBP3 expression, IGF-1R was significantly associated with response to chemotherapy (P = .028) and performance status was significantly associated with overall survival (P < .001). CONCLUSIONS: High sensitivity of IGF-1R to squamous cell carcinoma (100%) in this study and another study encourages the use of IGF-1R antibody in the pathologic diagnosis between squamous cell and non-squamous cell carcinoma when using small biopsy specimens.


Assuntos
Biomarcadores Tumorais/metabolismo , Proteína 3 de Ligação a Fator de Crescimento Semelhante à Insulina/metabolismo , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/metabolismo , Receptor IGF Tipo 1/metabolismo , Adenocarcinoma/diagnóstico , Adenocarcinoma/tratamento farmacológico , Adenocarcinoma/metabolismo , Adenocarcinoma/mortalidade , Adulto , Idoso , Idoso de 80 Anos ou mais , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Carcinoma Pulmonar de Células não Pequenas/diagnóstico , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/metabolismo , Carcinoma Pulmonar de Células não Pequenas/mortalidade , Carcinoma de Células Escamosas/diagnóstico , Carcinoma de Células Escamosas/tratamento farmacológico , Carcinoma de Células Escamosas/metabolismo , Carcinoma de Células Escamosas/mortalidade , Feminino , Humanos , Técnicas Imunoenzimáticas , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/mortalidade , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Prognóstico , Taxa de Sobrevida , Células Tumorais Cultivadas
16.
Am J Kidney Dis ; 59(1): 108-16, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-21890255

RESUMO

BACKGROUND: Patient responsiveness to erythropoiesis-stimulating agents (ESAs), notoriously difficult to measure, has attracted attention for its association with mortality. We defined categories of ESA responsiveness and attempted to clarify their association with mortality. STUDY DESIGN: Cohort study. SETTING & PARTICIPANTS: Data from Japan's dialysis registry (2005-2006), including 95,460 adult hemodialysis patients who received ESAs. PREDICTOR: We defined 6 categories of ESA responsiveness based on a combination of ESA dosage (low [<6,000 U/wk] or high [≥6,000 U/wk]) and hemoglobin level (low [<10 g/dL], medium [10-11.9 g/dL], or high [≥12 g/dL]), with medium hemoglobin level and low-dose ESA therapy as the reference category. OUTCOMES: All-cause and cardiovascular mortality during 1-year follow-up. MEASUREMENTS: HRs were estimated using a Cox model for the association between responsiveness categories and mortality, adjusting for potential confounders such as age, sex, postdialysis weight, dialysis duration, comorbid conditions, serum albumin level, and transferrin saturation. RESULTS: Median ESA dosage (4,500-5,999 U/wk) was used as a cutoff point, and mean hemoglobin level was 10.1 g/dL in our cohort. Of 95,460 patients during follow-up, 7,205 (7.5%) died of all causes, including 5,586 (5.9%) cardiovascular deaths. Low hemoglobin levels and high-dose ESA therapy were both associated with all-cause mortality (adjusted HRs, 1.18 [95% CI, 1.09-1.27] for low hemoglobin level with low-dose ESA and 1.44 [95% CI, 1.34-1.55] for medium hemoglobin level with high-dose ESA). Adjusted HRs for high-dose ESA with low hemoglobin level (hyporesponsiveness) were 1.94 (95% CI, 1.82-2.07) for all-cause and 2.02 (95% CI, 1.88-2.17) for cardiovascular mortality. We also noted the interaction between ESA dosage and hemoglobin level on all-cause mortality (likelihood ratio test, P = 0.002). LIMITATIONS: Potential residual confounding from unmeasured factors and single measurement of predictors. CONCLUSIONS: Mortality can be affected by ESA responsiveness, which may include independent and interactive effects of ESA dose and hemoglobin level. Responsiveness category has prognostic importance and clinical relevance in anemia management.


Assuntos
Hematínicos/administração & dosagem , Diálise Renal/mortalidade , Idoso , Estudos de Coortes , Feminino , Hemoglobinas/análise , Humanos , Japão , Masculino , Pessoa de Meia-Idade , Prognóstico , Sistema de Registros
17.
J Antibiot (Tokyo) ; 64(2): 169-75, 2011 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-21119679

RESUMO

FR901379 acylase, an enzyme that catalyzes the hydrolysis of the palmitoyl moiety of the antifungal lipopeptide FR901379, was purified from the culture broth of Streptomyces sp. no. 6907 (FERM BP-5809), revealing the 80 kDa, two-subunit heterodimeric protein characteristic of the ß-lactam acylase family. Using oligodeoxyribonucleotide primers constructed on the basis of the N-terminal amino acid sequence of each purified subunit, the gene was identified from a cosmid library of Streptomyces sp. no. 6907 DNA. The deduced 775 amino acid sequence corresponded to a single polypeptide chain containing two subunits, and it shared 41.7% identity with aculeacin A acylase from Actinoplanes utahensis NRRL12052. FR901379 acylase activity was found to be 250-fold higher in the recombinant Streptomyces lividans 1326 carrying the cloned gene than in the original Streptomyces sp. no. 6907 strain.


Assuntos
Amidoidrolases/genética , Amidoidrolases/metabolismo , Clonagem Molecular , Peptídeos Cíclicos/metabolismo , Streptomyces/enzimologia , Streptomyces/genética , Amidoidrolases/química , Amidoidrolases/isolamento & purificação , Primers do DNA , DNA Bacteriano/química , DNA Bacteriano/genética , Biblioteca Gênica , Dados de Sequência Molecular , Peso Molecular , Reação em Cadeia da Polimerase , Subunidades Proteicas , Análise de Sequência de DNA , Análise de Sequência de Proteína , Homologia de Sequência de Aminoácidos
18.
Environ Sci Technol ; 44(10): 3940-6, 2010 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-20426460

RESUMO

The use of stainless steel, a metal employed in a wide range of technology applications, has been characterized for 51 countries and the world for the years 2000 and 2005. We find that the global stainless steel flow-into-use increased by more than 30% in that 5 year period, as did additions to in-use stocks. This growth was mainly driven by China, which accounted for almost half of the global growth in stainless steel crude production and which tripled its flow into use between 2000 and 2005. The global stainless steel-specific end-of-life recycling rate increased from 66% (2000) to 70% (2005); the landfilling rate was 22% for both years, and 9% (2000) to 12% (2005) was lost into recycled carbon and alloy steels. Within just 5 years, China passed such traditionally strong stainless steel producers and users as Japan, USA, Germany, and South Korea to become the dominant player of the stainless steel industry. However, China did not produce any significant stainless steel end-of-life flows in 2000 or 2005 because its products-in-use are still too new to require replacements. Major Chinese discard flows are expected to begin between 2015 and 2020.


Assuntos
Metais , Aço Inoxidável , China
19.
Waste Manag Res ; 26(1): 11-32, 2008 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-18338699

RESUMO

Greenhouse gas (GHG) emissions from post-consumer waste and wastewater are a small contributor (about 3%) to total global anthropogenic GHG emissions. Emissions for 2004-2005 totalled 1.4 Gt CO2-eq year(-1) relative to total emissions from all sectors of 49 Gt CO2-eq year(-1) [including carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and F-gases normalized according to their 100-year global warming potentials (GWP)]. The CH4 from landfills and wastewater collectively accounted for about 90% of waste sector emissions, or about 18% of global anthropogenic methane emissions (which were about 14% of the global total in 2004). Wastewater N2O and CO2 from the incineration of waste containing fossil carbon (plastics; synthetic textiles) are minor sources. Due to the wide range of mature technologies that can mitigate GHG emissions from waste and provide public health, environmental protection, and sustainable development co-benefits, existing waste management practices can provide effective mitigation of GHG emissions from this sector. Current mitigation technologies include landfill gas recovery, improved landfill practices, and engineered wastewater management. In addition, significant GHG generation is avoided through controlled composting, state-of-the-art incineration, and expanded sanitation coverage. Reduced waste generation and the exploitation of energy from waste (landfill gas, incineration, anaerobic digester biogas) produce an indirect reduction of GHG emissions through the conservation of raw materials, improved energy and resource efficiency, and fossil fuel avoidance. Flexible strategies and financial incentives can expand waste management options to achieve GHG mitigation goals; local technology decisions are influenced by a variety of factors such as waste quantity and characteristics, cost and financing issues, infrastructure requirements including available land area, collection and transport considerations, and regulatory constraints. Existing studies on mitigation potentials and costs for the waste sector tend to focus on landfill CH4 as the baseline. The commercial recovery of landfill CH4 as a source of renewable energy has been practised at full scale since 1975 and currently exceeds 105 Mt CO2-eq year(-1). Although landfill CH4 emissions from developed countries have been largely stabilized, emissions from developing countries are increasing as more controlled (anaerobic) landfilling practices are implemented; these emissions could be reduced by accelerating the introduction of engineered gas recovery, increasing rates of waste minimization and recycling, and implementing alternative waste management strategies provided they are affordable, effective, and sustainable. Aided by Kyoto mechanisms such as the Clean Development Mechanism (CDM) and Joint Implementation (JI), the total global economic mitigation potential for reducing waste sector emissions in 2030 is estimated to be > 1000 Mt CO2-eq (or 70% of estimated emissions) at costs below 100 US$ t(-1) CO2-eq year(-1). An estimated 20-30% of projected emissions for 2030 can be reduced at negative cost and 30-50% at costs < 20 US$ t(-) CO2-eq year(-1). As landfills produce CH4 for several decades, incineration and composting are complementary mitigation measures to landfill gas recovery in the short- to medium-term--at the present time, there are > 130 Mt waste year(-1) incinerated at more than 600 plants. Current uncertainties with respect to emissions and mitigation potentials could be reduced by more consistent national definitions, coordinated international data collection, standardized data analysis, field validation of models, and consistent application of life-cycle assessment tools inclusive of fossil fuel offsets.


Assuntos
Efeito Estufa , Incineração/métodos , Eliminação de Resíduos/métodos , Eliminação de Resíduos Líquidos/métodos , Gerenciamento de Resíduos/normas , Dióxido de Carbono/análise , Dióxido de Carbono/metabolismo , Monitoramento Ambiental , Gases/análise , Gases/metabolismo , Metano/análise , Metano/metabolismo , Óxido Nitroso/análise , Óxido Nitroso/metabolismo , Gerenciamento de Resíduos/métodos
20.
Antimicrob Agents Chemother ; 49(7): 3053-5, 2005 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-15980398

RESUMO

The effect of an antiosteopontin antibody (M5 Ab) reacting with the SLAYGLR sequence within osteopontin on the host susceptibility to infection was investigated in a murine model of disseminated candidiasis. The treatment with anti-tumor necrosis factor alpha antibody enhanced fungal infection, while the treatment with M5 Ab did not affect the infection.


Assuntos
Anticorpos Monoclonais/uso terapêutico , Candida albicans/patogenicidade , Candidíase/terapia , Epitopos/imunologia , Sialoglicoproteínas/química , Sialoglicoproteínas/imunologia , Animais , Candidíase/imunologia , Candidíase/microbiologia , Candidíase/fisiopatologia , Contagem de Colônia Microbiana , Modelos Animais de Doenças , Feminino , Humanos , Rim/microbiologia , Camundongos , Camundongos Endogâmicos ICR , Osteopontina , Resultado do Tratamento , Fator de Necrose Tumoral alfa/imunologia
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