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AIM: Patients with malignant tumors are prone to develop nutritional disorders. The Geriatric Nutritional Risk Index (GNRI) is a new prognostic indicator for assessing the nutritional status. This study was performed to evaluate whether the preoperative GNRI can serve as a prognostic factor in patients with intrahepatic cholangiocarcinoma (ICC) undergoing curative surgery. METHODS: This study included 123 consecutive patients with ICC who were treated with curative surgery. Kaplan-Meier analysis was performed to calculate the recurrence-free survival (RFS) and overall survival (OS), and Cox regression analysis was used to evaluate prognostic factors. RESULTS: Of the 123 patients, 82 were male and 41 were female. The median age of the patients was 70 years, and the median follow-up period was 37.0 months (interquartile range, 16.2-71.7 months). The patients were classified by the median GNRI into a low GNRI group (GNRI < 105) and high GNRI group (GNRI ≥ 105). The patients in the low GNRI group had a significantly poorer prognosis in terms of RFS and OS than the patients in the high GNRI group (RFS, p = 0.0201; OS, p < 0.0001). Lymph node metastasis [hazard ratio (HR), 4.66; 95% confidence interval (CI), 2.46-8.85], postoperative complications (HR, 2.38; 95% CI, 1.32-4.31), and a low GNRI (HR, 2.53; 95% CI, 1.42-4.50) were independent poor prognostic factors for OS. CONCLUSION: The GNRI may be a useful prognostic indicator in patients with ICC undergoing curative hepatectomy.
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Neoplasias dos Ductos Biliares , Colangiocarcinoma , Humanos , Feminino , Masculino , Idoso , Lactente , Pré-Escolar , Criança , Hepatectomia , Prognóstico , Estudos Retrospectivos , Colangiocarcinoma/cirurgia , Neoplasias dos Ductos Biliares/cirurgia , Ductos Biliares Intra-HepáticosRESUMO
BACKGROUND: With the rapid aging of populations worldwide, the number of vulnerable patients with liver metastasis from colorectal cancer has increased. This study aimed to examine the association between vulnerability and clinical outcomes in patients with colorectal liver metastasis (CRLM). METHODS: Consecutive 101 patients undergoing upfront hepatectomy for CRLM between 2004 and 2020 were included. The preoperative vulnerability was assessed using the Clinical Frailty Scale (CFS) score ranging from one (very fit) to nine (terminally ill), and frailty was defined as a CFS score of ≥ 4. A multivariable Cox proportional hazard regression model was utilized to investigate associations of frailty with disease-free survival (DFS), overall survival (OS), and cancer-specific survival (CSS). RESULTS: Of the 101 patients, 12 (12%) had frailty. Associations between frailty and surgical outcomes, namely, the incidence of 90-day mortality and postoperative complications, were not statistically significant (P > 0.05). In the multivariable analyses, after adjusting for clinical risk scores calculated using six factors (timing of liver metastasis, primary tumor lymph node status, number of liver tumors, size of the largest tumor, extrahepatic metastatic disease, and carbohydrate antigen 19-9 level) to predict recurrence following hepatectomy for CRLM, preoperative frailty was found to be an independent risk factor for DFS (hazard ratio [HR]:2.37, 95% confidence interval [CI] 1.06-4.72, P = 0.036), OS (HR:4.17, 95% CI 1.43-10.89, P = 0.011), and CSS (HR:3.49, 95% CI 1.09-9.60, P = 0.036). CONCLUSION: Preoperative frailty was associated with worse DFS, OS, and CSS after upfront hepatectomy for CRLM. Assessment and improvement of patient vulnerability may provide a favorable prognosis for patients with CRLM.
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Neoplasias Colorretais , Fragilidade , Neoplasias Hepáticas , Humanos , Hepatectomia , Fragilidade/cirurgia , Neoplasias Colorretais/patologia , Estudos Retrospectivos , PrognósticoRESUMO
In this study, we report a case in which molecular-targeted agents have been shown to be effective in the treatment of unresectable hepatocellular carcinoma(HCC), which has enabled a radical treatment, conversion therapy, and long-term survival with multimodality treatment including RFA. Case: A 61-year-old male, abdominal ultrasonography revealed a large liver tumor and multiple lesions mainly in the right lobe of the liver. He was diagnosed as having unresectable HCC, and treatment with sorafenib was initiated. After treatment, the tumor was clearly reduced in size and the lung metastases disappeared. Five years later, recurrence was observed at the treated site of S7/8, and RFA was performed again after TACE. The patient has survived for 8 years without recurrence.
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Carcinoma Hepatocelular , Ablação por Cateter , Quimioembolização Terapêutica , Neoplasias Hepáticas , Masculino , Humanos , Pessoa de Meia-Idade , Carcinoma Hepatocelular/tratamento farmacológico , Carcinoma Hepatocelular/cirurgia , Neoplasias Hepáticas/tratamento farmacológico , Neoplasias Hepáticas/cirurgia , Terapia de Alvo Molecular , Resultado do Tratamento , Sorafenibe , Terapia CombinadaRESUMO
Unlike absorption-based colors of dyes and pigments, reflection-based colors of photonic crystals, so called "structural colors", are responsive to external stimuli, but can remain unfaded for over ten million years, and therefore regarded as a next-generation coloring mechanism. However, it is a challenge to rationally design the spectra of structural colors, where one structure gives only one reflection peak defined by Bragg's law, unlike those of absorption-based colors. Here, we report a reconfigurable photonic crystal that exhibits single-peak and double-peak structural colors. This photonic crystal is composed of a colloidal nanosheet in water, which spontaneously adopts a layered structure with single periodicity (407â nm). After a temperature-gradient treatment, the photonic crystal segregates into two regions with shrunken (385â nm) and expanded (448â nm) periodicities, and thus exhibits double reflection peaks that are blue- and red-shifted from the original one, respectively. Notably, the transition between the single-peak and double-peak states is reversible.
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It is essential for oncology pharmacists to update their knowledge, skills, and ethical attitudes. The Japanese Society of Pharmaceutical Oncology is an academic society for healthcare professionals involved in cancer treatment. It has conducted in-person seminars every year to cultivate the knowledge necessary for practicing advanced cancer medicine. Owing to the coronavirus disease (COVID-19) pandemic, the society was obligated to conduct a web-based seminar this year. A questionnaire survey was conducted before and after the webinar to explain how it works and to assess the learning attitudes of beginner and moderately skilled pharmacists in the field of oncology. Questionnaire surveys were conducted with the participants before and after watching the webinar. The questionnaires sought to determine participants' perspectives on the webinar and their knowledge of the seven modules. Of the 1756 webinar attendees, 1661 (94.6%) answered the pre-webinar survey and 1586 (90.3%) answered the post-webinar survey. Results indicate that the median post-webinar knowledge score was significantly higher than the median pre-webinar score (p < 0.001) in all modules. Principal component analysis of the degree of knowledge of seven modules revealed that the improved score group consisted of those from younger age groups, with less experience as pharmacists, non-society members, and those with less experience in past society seminars. Moreover, the web-based seminar provided a uniform learning effect throughout the country without distinguishing between urban and rural learners. The web-based educational program was an acceptable educational tool for Japanese oncology pharmacists.
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COVID-19 , Pandemias , Humanos , Japão , Aprendizagem , FarmacêuticosRESUMO
BACKGROUND: Postoperative pancreatic fistula (POPF) is a critical complication of pancreatectomy in patients with pancreatic ductal adenocarcinoma (PDAC). Recent papers reported that serum carbohydrate antigen (CA)19-9 levels predicted long-term prognosis. We investigated whether preoperative serum CA19-9 levels were associated with POPF in PDAC patients. METHODS: This cohort study was conducted at a single institution retrospectively. Clinicopathologic features were determined using medical records. RESULTS: Among of 196 consecutive patients who underwent pancreatectomy against PDAC, 180 patients whose CA19-9 levels were above the measurement sensitivity, were registered in this study. The patients consisted of 122 patients who underwent pancreaticoduodenectomy and 58 patients who underwent distal pancreatectomy. Several clinicopathological factors, including CA 19-9 level, as well as surgical factors were determined retrospectively based on the medical records. Patients with high CA19-9 levels had a significantly higher incidence of POPF than those with low levels (43.9 vs. 13.0%, P < 0.0001). The receiver operating characteristic curves calculated that the cutoff CA19-9 value to predict POPF was 428 U/mL. CA19-9, BMI, curability, and histology were statistically significant risk factors for POPF by univariate analysis. Multivariate analysis showed that CA19-9 and BMI levels were statistically significant independent risk factors for POPF. CA19-9 levels were correlated with both histology and curability. Disease free survival and overall survival of patients with higher levels of CA19-9 were significantly shorter than that of patients with lower levels of preoperative serum CA19-9. CONCLUSIONS: In patients undergoing pancreatectomy for PDAC, higher preoperative CA19-9 levels are a significant predictor for POPF.
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Carcinoma Ductal Pancreático , Neoplasias Pancreáticas , Humanos , Fístula Pancreática/diagnóstico , Fístula Pancreática/etiologia , Fístula Pancreática/cirurgia , Antígeno CA-19-9 , Estudos Retrospectivos , Estudos de Coortes , Carcinoma Ductal Pancreático/cirurgia , Carcinoma Ductal Pancreático/patologia , Neoplasias Pancreáticas/patologia , Pancreaticoduodenectomia/efeitos adversos , Pancreatectomia/efeitos adversos , Complicações Pós-Operatórias/diagnóstico , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Fatores de Risco , Neoplasias PancreáticasRESUMO
While ultrahigh-baud-rate optical signals are effective for extending the transmission distance of large capacity signals, they also reduce the number of wavelengths that can be arranged in a band because of their wider bandwidth. This reduces the flexibility of optical path configuration in reconfigurable optical add/drop multiplexing (ROADM) networks. Particularly in colorless, directionless and contentionless (CDC)-ROADM, the effect reduces the add/drop ratio at a node. Multiband ROADM systems are an effective countermeasure for overcoming this issue, but they make the node configuration more complicated and its operation more difficult. In this paper, we analyze the challenges of C + L band CDC-ROADM and show that optical switch devices that operate over multiple bands are effective in meeting them. For this purpose, we built a C + L band CDC-ROADM node based on C + L band wavelength-selective switches and multicast switches and confirmed its effectiveness experimentally. In particular, to simplify the node configuration, we propose a reduction in the number of optical amplifiers used for node loss compensation and experimentally verify its feasibility.
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Unmanned aerial vehicles (UAVs) are popular tools for high-throughput phenotyping of crops in the field. However, their use for evaluation of individual lines is limited in crop breeding because research on what the UAV image data represent is still developing. Here, we investigated the connection between shoot biomass of rice plants and the vegetation fraction (VF) estimated from high-resolution orthomosaic images taken by a UAV 10 m above a field during the vegetative stage. Haplotype-based genome-wide association studies of multi-parental advanced generation inter-cross (MAGIC) lines revealed four quantitative trait loci (QTLs) for VF. VF was correlated with shoot biomass, but the haplotype effect on VF was better correlated with that on shoot biomass at these QTLs. Further genetic characterization revealed the relationships between these QTLs and plant spreading habit, final shoot biomass and panicle weight. Thus, genetic analysis using high-throughput phenotyping data derived from low-altitude, high-resolution UAV images during early stages of rice growing in the field provides insights into plant growth, architecture, final biomass, and yield.
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Oryza , Biomassa , Dissecação , Estudo de Associação Genômica Ampla , Haplótipos , Oryza/genética , Melhoramento VegetalRESUMO
Dynamin 1 is a neuronal endocytic protein that participates in vesicle formation by scission of invaginated membranes. Dynamin 1 is also expressed in the kidney; however, its physiological significance to this organ remains unknown. Here, we show that dynamin 1 is crucial for microtubule organization and stabilization in glomerular podocytes. By immunofluorescence and immunoelectron microscopy, dynamin 1 was concentrated at microtubules at primary processes in rat podocytes. By immunofluorescence of differentiated mouse podocytes (MPCs), dynamin 1 was often colocalized with microtubule bundles, which radially arranged toward periphery of expanded podocyte. In dynamin 1-depleted MPCs by RNAi, α-tubulin showed a dispersed linear filament-like localization, and microtubule bundles were rarely observed. Furthermore, dynamin 1 depletion resulted in the formation of discontinuous, short acetylated α-tubulin fragments, and the decrease of microtubule-rich protrusions. Dynamins 1 and 2 double-knockout podocytes showed dispersed acetylated α-tubulin and rare protrusions. In vitro, dynamin 1 polymerized around microtubules and cross-linked them into bundles, and increased their resistance to the disassembly-inducing reagents Ca2+ and podophyllotoxin. In addition, overexpression and depletion of dynamin 1 in MPCs increased and decreased the nocodazole resistance of microtubules, respectively. These results suggest that dynamin 1 supports the microtubule bundle formation and participates in the stabilization of microtubules.
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Dinamina I/metabolismo , Rim/metabolismo , Microtúbulos/metabolismo , Podócitos/metabolismo , Animais , Células Cultivadas , Endocitose/fisiologia , Células Epiteliais/metabolismo , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Proteínas Associadas aos Microtúbulos/metabolismo , Ratos , Tubulina (Proteína)/metabolismoRESUMO
We have studied the cardiac beat synchronization (CBS) control for a rotary blood pump (RBP) and revealed that it can promote pulsatility and reduce cardiac load. Besides, patients with LVAD support sometimes suffer from aortic and mitral regurgitation (AR and MR). A control method for the RBP should be validated in wider range of conditions to clarify its benefits and pitfalls prior to clinical application. In this study, we evaluated pulsatility and cardiac load reduction obtained with the CBS control on valvular failure conditions with a mathematical model. Diastolic assist could reduce cardiac load on the left ventricle by decreasing external work of the ventricle even in MR cases while it was not so effective in AR cases. Systolic assist can still promote pulsatility in AR and MR cases; however, aortic valve function should be carefully confirmed since pulse pressure can be wider not due to systolic assist but to AR.
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Insuficiência da Valva Aórtica/prevenção & controle , Insuficiência Cardíaca/cirurgia , Coração Auxiliar/efeitos adversos , Insuficiência da Valva Mitral/prevenção & controle , Modelos Cardiovasculares , Insuficiência da Valva Aórtica/etiologia , Insuficiência da Valva Aórtica/fisiopatologia , Pressão Sanguínea/fisiologia , Diástole/fisiologia , Insuficiência Cardíaca/fisiopatologia , Frequência Cardíaca/fisiologia , Ventrículos do Coração/fisiopatologia , Humanos , Insuficiência da Valva Mitral/etiologia , Insuficiência da Valva Mitral/fisiopatologia , Fluxo Pulsátil , Sístole/fisiologia , Função Ventricular Esquerda/fisiologiaRESUMO
WHAT IS KNOWN AND OBJECTIVE: Continuing education is essential for pharmacists to acquire and maintain the knowledge, skills, and ethical attitudes necessary for clinical practice. However, with the emergence of COVID-19, the social circumstances and face-to-face learning environments have changed. The objectives of this study were to determine Japanese pharmacists' perception of a web-based educational programme in oncology, and assess changes in their understanding of pharmaceutical care in oncology before and after their participation in the webinar. METHODS: Questionnaire-based surveys were conducted for the participants of the web-based educational programme to determine their perspectives on the webinar, and their degree of comprehension of the five cancer types covered before and after watching the webinar. RESULTS AND DISCUSSION: Of the 1936 pharmacists taking the programme, all participated in the pre-webinar survey, and 1861 (96.1%) in the post-webinar survey. Compared with previous seminars that were held in the offline mode before the COVID-19 pandemic, 76.8% of respondents were significantly satisfied with the web-based educational programme. The median post-webinar comprehension scores in all modules were significantly higher than the median pre-webinar scores (p < 0.0001). A majority of the participants agreed that a web-based educational programme was satisfactory in acquiring knowledge. WHAT IS NEW AND CONCLUSION: This web-based educational programme was effective for Japanese pharmacists for postgraduate education in pharmaceutical care in oncology. To the best of our knowledge, our study is the first to report the effectiveness of a web-based educational programme for oncology pharmacists using a large population.
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COVID-19/prevenção & controle , Educação Continuada/métodos , Educação a Distância/métodos , Educação em Farmácia/métodos , Internet , Farmacêuticos/estatística & dados numéricos , Avaliação de Programas e Projetos de Saúde/métodos , Adulto , Feminino , Pesquisas sobre Atenção à Saúde/métodos , Humanos , Japão , Masculino , Pessoa de Meia-Idade , Pandemias , Papel Profissional , SARS-CoV-2 , Adulto JovemRESUMO
Recently, it was reported that abdominal infection affected the survival rate after colorectal cancer surgery. We retrospectively assessed the risk factors for complications related to infection after obstructive colorectal cancer surgery. In the multivariate analysis, the following variables were found to be independent risk factors for complications related to infection after obstructive colorectal cancer surgery: PNI(p=0.02, OR=14.5)and the duration of surgery(p<0.01, OR=24.0). In addition, the lack of improvement of PNI after preoperative decompression led to an increase in the incidence of complications related to infection after surgery. Therefore, efforts should be made to prevent prolonged duration of surgery and thereby, improve preoperative nutrition while choosing the appropriate method for obstructive colorectal cancer surgery.
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Neoplasias Colorretais , Infecções , Neoplasias Colorretais/cirurgia , Humanos , Estado Nutricional , Prognóstico , Estudos Retrospectivos , Fatores de RiscoRESUMO
In the temperate latitudes, high-reflectivity exterior surfaces save energy spent on ventilation and cooling during summer, but cost energy on heating in winter. Angularly selective surfaces that adjust their reflectivities by sun position allow beneficial effects in both seasons - high reflectivity in summer and high absorption in winter. Here we show how a planar microstructured surface can produce such an angularly selective behavior and estimate its energy efficiency under direct solar irradiance at 35° N. Results show that such an ideal angularly selective surface has the potential to improve efficiency by up to 43.2% compared to a conventional concrete surface. Numerical results for an aluminum one-dimensional periodic structure indicate that it achieves a 25.7% improvement of efficiency. Finally, we validate the designed structure by measuring the reflectivity of the fabricated surface at a series of angles.
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We studied a control method of rotary blood pumps (RBPs), which is called as the cardiac beat synchronization (CBS) system. Usually, RBPs operate at constant target rotational speed, meanwhile, the CBS system modulates target speed synchronizing with cardiac beat. We built a computer simulation method to evaluate the CBS system. This simulator acquires a mathematical model of a circulatory system including a RBP and can provide us the theoretical hemodynamics when our control method is applied. We compared theoretical results with experimental ones with the model focusing on both pulsatility and aortic valve (AV) opening interval enhanced by the CBS system. Our simulator could reproduce behavior of the circulatory system whether the RBP is connected or not. Comparison among no RBP, constant assist, systolic assist, and diastolic assist modes indicated that pulsatility is enhanced with systolic assist theoretically. While systolic assist decreased AV opening interval, diastolic assist made it longer than the ones in other control strategies.
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Valva Aórtica/fisiopatologia , Simulação por Computador , Frequência Cardíaca/fisiologia , Coração Auxiliar , Modelos Cardiovasculares , Diástole , Humanos , Fluxo Pulsátil , SístoleRESUMO
Photoreactions of acetonitrile solutions of 3,3-diaryl-1,1-dicyano-2-methylprop-1-enes (1a-c) with allyltrimethylsilane (2) in the presence of phenanthrene as a photoredox catalyst and acetic acid as a proton source formed photoallylation (3) and photoreduction (4) products via photoinduced electron transfer pathways. When (S)-mandelic acid was used as the proton source, the reactions proceeded with 3.4 and 4.8 %ee for formation of 3 and 4, respectively. The results of studies of the effect of aryl ring substituents and several chiral carboxylic acids suggested that the enantioselectivities of the reactions are governed by steric controlled proton transfer in intermediate complexes formed by π-π and OH-π interactions of anion radicals derived from 1a-c and chiral carboxylic acids.
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Ácidos Carboxílicos/química , Nitrilas/química , Fenantrenos/química , Prótons , Compostos de Trimetilsilil/química , Ácido Acético/química , Alcenos/química , Ânions , Catálise , Radicais Livres , Hidrogenação , Luz , Processos Fotoquímicos , EstereoisomerismoRESUMO
Background: The clinical and pathologic manifestations of nephropathy due to type 2 diabetes are diverse, but large-scale pathologic studies with long-term observations are limited. Methods: Kidney biopsies and clinical data of 600 patients with type 2 diabetes were collected retrospectively from 13 centres across Japan. Thirteen pathologic findings (nine glomerular lesions, two interstitial lesions and two vascular lesions) were clearly defined and scored. Results: During the observation period, there were 304 composite kidney events [dialysis, doubling of creatinine or reduction of estimated glomerular filtration rate (eGFR) by half], 31 instances of chronic kidney disease (CKD) G5D, 76 cardiovascular events and 73 deaths. The mean observation period was 72.4 months. The distribution of CKD heat map categories for the 600 patients was 103 green or yellow, 149 orange and 348 red. Even in the cases in the green and yellow category, diffuse lesions (81.6%), polar vasculosis (42.6%) and subendothelial space widening (35.1%) were commonly detected. Cox proportional hazard analysis revealed that the presence of nodular lesions [hazard ratio (HR) 21.1, 95% confidence interval (CI) 5.3-84.6], exudative lesions (HR 5.1, 95% CI 1.3-20.3) and mesangiolysis (HR 7.6, 95% CI 2.0-28.8) in cases in the green and yellow category were associated with significantly great impact on composite kidney events after adjustment for clinical risk factors. Conclusions: This nationwide study on kidney biopsy of 600 cases with type 2 diabetes revealed that pathologic findings (presence of nodular lesions, exudative lesions and mesangiolysis) were strong predictors of kidney events in low-risk patients.
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Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/cirurgia , Nefropatias Diabéticas/patologia , Rim/patologia , Adulto , Idoso , Biópsia , Creatinina/sangue , Nefropatias Diabéticas/classificação , Nefropatias Diabéticas/epidemiologia , Nefropatias Diabéticas/mortalidade , Feminino , Taxa de Filtração Glomerular , Humanos , Japão/epidemiologia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Risco , Taxa de SobrevidaRESUMO
PURPOSE: In patients with aneurysmal subarachnoid hemorrhage (SAH), increased glucose variability (GV) is associated with increased mortality and cerebral infarction; however, there are no reports demonstrating an association between GV and neurological outcome. This study investigated whether GV had an independent effect on neurological outcomes in patients with SAH in the intensive care unit. MATERIALS AND METHODS: Consecutive adult patients hospitalized with SAH between January 1, 2009, and May 31, 2015 (N = 122) were retrospectively reviewed. Univariate/multivariate analyses were performed to identify independent predictors of poor neurological outcome. Patients were divided according to the mean glucose level (80-139 vs 140-200 mg/dL) and further subdivided using quartiles (Q) of the standard deviation (SD, representing variability) of the glucose level (Q1, Q2 + 3, and Q4). RESULTS: Unfavorable neurological outcomes occurred in 44.2% of the patients. On multiple regression analysis, age, Hunt and Kosnik grade, SD of glucose (odds ratio [OR], 1.09; 95% confidence interval [CI], 1.02-1.17; P < .01), and minimum blood glucose level (OR, 0.95; 95% CI, 0.91-0.99; P < .01) were significantly associated with unfavorable neurological outcomes. Both groups (mean glucose levels: 80-139 and 140-200 mg/dL groups) had increasing unfavorable neurological outcomes with increasing SD of glucose (Q1, 15.0%; Q2 + 3, 40.0%; Q4, 52.4% and Q1, 44.4%; Q2 + 3, 50%; Q4, 88.9% in the 80-139 and 140-200 mg/dL groups, respectively). Patients with minimum glucose of <90 mg/dL comprised >50% of unfavorable neurological outcome. CONCLUSION: Increased GV was an independent predictor of unfavorable neurological outcomes in patients with SAH.
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Glicemia/análise , Doenças do Sistema Nervoso/sangue , Hemorragia Subaracnóidea/complicações , Adulto , Idoso , Feminino , Humanos , Unidades de Terapia Intensiva/estatística & dados numéricos , Masculino , Pessoa de Meia-Idade , Doenças do Sistema Nervoso/etiologia , Razão de Chances , Análise de Regressão , Estudos Retrospectivos , Hemorragia Subaracnóidea/sangueRESUMO
BACKGROUND: The Japanese classification of diabetic nephropathy reflects the risks of mortality, cardiovascular events and kidney prognosis and is clinically useful. Furthermore, pathological findings of diabetic nephropathy are useful for predicting prognoses. In this study, we evaluated the characteristics of pathological findings in relation to the Japanese classification of diabetic nephropathy and their ability to predict prognosis. METHODS: The clinical data of 600 biopsy-confirmed diabetic nephropathy patients were collected retrospectively from 13 centers across Japan. Composite kidney events, kidney death, cardiovascular events, all-cause mortality, and decreasing rate of estimated GFR (eGFR) were evaluated based on the Japanese classification of diabetic nephropathy. RESULTS: The median observation period was 70.4 (IQR 20.9-101.0) months. Each stage had specific characteristic pathological findings. Diffuse lesions, interstitial fibrosis and/or tubular atrophy (IFTA), interstitial cell infiltration, arteriolar hyalinosis, and intimal thickening were detected in more than half the cases, even in Stage 1. An analysis of the impacts on outcomes in all data showed that hazard ratios of diffuse lesions, widening of the subendothelial space, exudative lesions, mesangiolysis, IFTA, and interstitial cell infiltration were 2.7, 2.8, 2.7, 2.6, 3.5, and 3.7, respectively. Median declining speed of eGFR in all cases was 5.61 mL/min/1.73 m2/year, and the median rate of declining kidney function within 2 years after kidney biopsy was 24.0%. CONCLUSIONS: This study indicated that pathological findings could categorize the high-risk group as well as the Japanese classification of diabetic nephropathy. Further study using biopsy specimens is required to clarify the pathogenesis of diabetic kidney disease.
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Nefropatias Diabéticas/patologia , Rim/patologia , Adulto , Idoso , Biópsia , Nefropatias Diabéticas/classificação , Nefropatias Diabéticas/mortalidade , Feminino , Taxa de Filtração Glomerular , Humanos , Japão/epidemiologia , Rim/fisiopatologia , Masculino , Pessoa de Meia-Idade , Estudos RetrospectivosRESUMO
BACKGROUND: Nephrosclerosis is an increasingly reason for dialysis in Japan. However, kidney biopsy specimens for hypertensive nephrosclerosis are very limited; thus, the pathologic evaluation of hypertensive nephrosclerosis currently remains unclear. METHODS: Clinical and pathologic data of a total of 184 biopsy-confirmed hypertensive nephrosclerosis patients were collected from 13 centers throughout Japan. Seven pathological findings were assessed in this study. The outcomes of interest for this study were dialysis, composite kidney events, cardiovascular events, and all-cause mortality. RESULTS: The Green and Yellow (G&Y), Orange, and Red groups of the chronic kidney diseases (CKD) heat map contained 36, 57, and 91 cases, respectively. The mean observation period was 7.3 ± 5.2 (median, IQR; 6.1, 2.6-9.7) years. Global glomerulosclerosis (GScle), interstitial fibrosis and tubular atrophy (IFTA), arteriolar hyalinosis in Red exhibited higher scores than those in G&Y and Orange. The incidence rates of the composite kidney end points in 100 person-years for the G&Y, Orange, and Red groups were 1.42, 2.16, and 3.98, respectively. In the univariate Cox analysis for the composite kidney end points, GScle, IFTA and interstitial cell infiltration exhibited statistically significant high hazard ratios (1.18, 1.84, 1.69, respectively). However, after adjustment for clinical and medication data, the Red group in the CKD heat map category was risk factor for the composite kidney end points (HR 9.51). CONCLUSIONS: In summary, although pathologic findings had minor impacts on the prediction of composite outcomes in this study, the clinical stage of the CKD heat map is a good predictor of composite kidney events.
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Hipertensão Renal/patologia , Rim/patologia , Nefrite/patologia , Nefroesclerose/patologia , Adulto , Idoso , Povo Asiático , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos RetrospectivosRESUMO
BACKGROUND: There is increased interest in surrogate endpoints for clinical trials of chronic kidney disease. METHODS: In this nationwide observational study of 456 patients with type 2 diabetes and clinically suspected diabetic nephropathy followed for a median of 4.2 years, we evaluated the association between estimated glomerular filtration rate (eGFR) and albuminuria at baseline or during follow-up and risk of ESRD. RESULTS: Low eGFR (<60 mL/min/1.73 m2) and macroalbuminuria at enrollment were independently associated with risk of ESRD. In patients with macroalbuminuria, both ≤-50% change and -50 to -30% change in eGFR over 1 and 2 years were predictive of ESRD. The higher cut point (≥50% decline in eGFR) was more strongly predictive but less common. Remission of macroalbuminuria to normo-/microalbuminuria at 1 and 2 years was associated with a lower incidence of ESRD than no remission; however, it was not a determinant for ESRD independently of initial eGFR and initial protein-to-creatinine ratio. CONCLUSION: These results suggest that a ≥30% decline in eGFR over 1 or 2 years adds prognostic information about risk for ESRD in patients with type 2 diabetes and macroalbuminuria, supporting the consideration of percentage decline in eGFR as a surrogate endpoint among macroalbuminuric cases in type 2 diabetes. On the other hand, our study suggests that additional analyses on the relationship between remission of macroalbuminuria and risk of ESRD are needed in type 2 diabetes.