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1.
Tech Coloproctol ; 28(1): 80, 2024 Jul 06.
Artigo em Inglês | MEDLINE | ID: mdl-38971941

RESUMO

BACKGROUND: This study aimed to clarify the efficacy and safety of minimally invasive transabdominal surgery (MIS) with transperineal minimal invasive surgery (tpMIS) for sacrectomy in advanced primary and recurrent pelvic malignancies. METHODS: Using a prospectively collected database, we retrospectively analyzed the clinical, surgical, and pathological outcomes of MIS with tpMIS for sacrectomies. Surgery was performed between February 2019 and May 2023. The median follow-up period was 27 months (5-46 months). RESULTS: Fifteen consecutive patients were included in this analysis. The diagnoses were as follows: recurrent rectal cancer, n = 11 (73%); primary rectal cancer, n = 3 (20%); and recurrent ovarian cancer, n = 1 (7%). Seven patients (47%) underwent pelvic exenteration with sacrectomy, six patients (40%) underwent abdominoperineal resection (APR) with sacrectomy, and two patients (13%) underwent tumor resection with sacrectomy. The median intraoperative blood loss was 235 ml (range 45-1320 ml). The postoperative complications (Clavien-Dindo grade ≥ 3a) were graded as follows: 3a, n = 6 (40%); 3b, n = 1 (7%); and ≥ 4, n = 0 (0%). Pathological examinations demonstrated that R0 was achieved in 13 patients (87%). During the follow-up period, two patients (13%) developed local re-recurrence due to recurrent cancer. The remaining 13 patients (87%) had no local disease. Fourteen patients (93%) survived. CONCLUSIONS: Although the patient cohort in this study is heterogeneous, MIS with tpMIS was associated with a very small amount of blood loss, a low incidence of severe postoperative complications, and an acceptable R0 resection rate. Further studies are needed to clarify the long-term oncological feasibility.


Assuntos
Estudos de Viabilidade , Procedimentos Cirúrgicos Minimamente Invasivos , Recidiva Local de Neoplasia , Períneo , Humanos , Feminino , Pessoa de Meia-Idade , Idoso , Estudos Retrospectivos , Masculino , Períneo/cirurgia , Procedimentos Cirúrgicos Minimamente Invasivos/métodos , Procedimentos Cirúrgicos Minimamente Invasivos/efeitos adversos , Adulto , Resultado do Tratamento , Neoplasias Pélvicas/cirurgia , Sacro/cirurgia , Exenteração Pélvica/métodos , Exenteração Pélvica/efeitos adversos , Neoplasias Retais/cirurgia , Neoplasias Retais/patologia , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/epidemiologia , Neoplasias Ovarianas/cirurgia , Neoplasias Ovarianas/patologia
2.
Tech Coloproctol ; 27(12): 1367-1375, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37878167

RESUMO

BACKGROUND: The purpose of this study was to clarify the efficacy and safety of transanal minimally invasive surgery (TAMIS) for total pelvic exenteration (TPE) in advanced primary and recurrent pelvic malignancies. METHODS: Using a prospectively collected database, we retrospectively analyzed the clinical, surgical, and pathological outcomes of TAMIS for TPE. Surgery was performed between September 2019 and April 2023. The median follow-up period was 22 months (2-45 months). RESULTS: Fifteen consecutive patients were included in this analysis M:F = 14:1 and median (range) age was 63 (36-74). Their diagnoses were as follows: primary rectal cancer (n = 5; 33%), recurrent rectal cancer (n = 4; 27%), primary anorectal cancer (n = 5; 33%), and gastrointestinal stromal tumor (n = 1; 7%). Bladder-sparing TPE was selected for two patients (13%). In nine of 15 patients (60%) the anal sphincter could be successfully preserved, five patients (33%) required combined resection of the internal iliac vessels, and two (13%) required rectus muscle flap reconstruction. The median operative time was 723 min (561-1082), and the median intraoperative blood loss was 195 ml (30-1520). The Clavien-Dindo classifications of the postoperative complications were as follows: grade 0-2 (n = 11; 73%); 3a (n = 3; 20%); 3b (n = 1; 7%); and ≥ 4 (n = 0; 0%). No cases of conversion to laparotomy or mortality were observed. The pathological results demonstrated that R0 was achieved in 14 patients (93%). CONCLUSIONS: The short-term outcomes of this initial experience proved that this novel approach is feasible for TPE, with low blood loss, acceptable postoperative complications, and a satisfactory R0 resection rate.


Assuntos
Neoplasias do Ânus , Carcinoma , Exenteração Pélvica , Neoplasias Pélvicas , Neoplasias Retais , Cirurgia Endoscópica Transanal , Humanos , Neoplasias Pélvicas/cirurgia , Neoplasias Retais/cirurgia , Neoplasias Retais/patologia , Exenteração Pélvica/efeitos adversos , Exenteração Pélvica/métodos , Estudos Retrospectivos , Estudos de Viabilidade , Neoplasias do Ânus/cirurgia , Complicações Pós-Operatórias/cirurgia , Carcinoma/cirurgia , Cirurgia Endoscópica Transanal/efeitos adversos , Recidiva Local de Neoplasia/patologia , Resultado do Tratamento
3.
J Dairy Sci ; 105(3): 2082-2093, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-34955279

RESUMO

Lactic acid bacteria (LAB) play important roles in acid production and flavor formation in fermented dairy products. Lactic acid bacteria strains with distinct characteristics confer unique features to products. Diverse LAB have been identified in raw milk and traditional fermented milk prepared from raw milk. However, little is known about LAB in raw milk in Japan. To preserve diverse LAB as potential starters or probiotics for future use, we have isolated and identified various kinds of LAB from raw milk produced in Japan. In this study, we focused on Lactobacillus delbrueckii, one of the most important species in the dairy industry. We identified L. delbrueckii subspecies isolated from raw milk in Hokkaido, Japan, by analyzing intraspecific diversity using 4 distinct methods, hsp60 cluster analysis, multilocus sequence analysis, core-genome analysis, and whole-genome analysis based on average nucleotide identity. The subspecies distribution and a new dominant subset of L. delbrueckii from raw milk in Japan were revealed. The discovery of new strains with different genotypes is important for understanding the geographic distribution and characteristics of the bacteria and further their use as a microbial resource with the potential to express unconventional flavors and functionalities. The strains identified in this study may have practical applications in the development of fermented dairy products.


Assuntos
Produtos Fermentados do Leite , Lactobacillus delbrueckii , Probióticos , Animais , Produtos Fermentados do Leite/microbiologia , Variação Genética , Japão , Lactobacillus delbrueckii/genética , Leite/microbiologia
4.
Eur J Neurol ; 28(2): 509-515, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-32961590

RESUMO

BACKGROUND AND PURPOSE: A transient ischemic attack (TIA) can occur without self-awareness of symptoms. We aimed to investigate characteristics of patients with a tissue-based diagnosis of TIA but having no self-awareness of their symptoms and whose symptoms were witnessed by bystanders. METHODS: We used data from the multicenter registry of 1414 patients with a clinical diagnosis of TIA. For patients without evidence of ischemic lesions on imaging, clinical characteristics were compared between patients with and without self-awareness of their TIA symptoms. RESULTS: Among 896 patients (559 men, median age of 70 years), 59 (6.6%) were unaware of their TIA symptoms, but had those symptoms witnessed by bystanders. Patients without self-awareness of symptoms were older and more frequently female, and more likely to have previous history of stroke, premorbid disability, and atrial fibrillation, but less likely to have dyslipidemia than those with self-awareness. Patients without self-awareness of symptoms arrive at hospitals earlier than those with self-awareness (P < 0.001). ABCD2 score was higher in patients without self-awareness of symptoms than those with self-awareness (median 5 vs. 4, P = 0.002). Having no self-awareness of symptoms was a significant predictor of ischemic stroke within 1 year after adjustment for sex, ABCD2 score, and onset to arrival time (hazard ratio = 2.44, 95% confidential interval: 1.10-4.83), but was not significant after further adjustment for arterial stenosis or occlusion. CONCLUSIONS: Patients with a TIA but having no self-awareness of their symptoms might have higher risk of subsequent ischemic stroke rather than those with self-awareness, suggesting urgent management is needed even if patients have no self-awareness of symptoms.


Assuntos
Fibrilação Atrial , Ataque Isquêmico Transitório , Acidente Vascular Cerebral , Idoso , Feminino , Humanos , Ataque Isquêmico Transitório/diagnóstico , Ataque Isquêmico Transitório/epidemiologia , Masculino , Sistema de Registros , Fatores de Risco , Acidente Vascular Cerebral/epidemiologia
5.
Eur J Neurol ; 27(12): 2463-2472, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-32697875

RESUMO

BACKGROUND AND PURPOSE: Urinary liver-type fatty-acid binding protein (L-FABP), which is a biomarker of kidney tubule injury, has been studied extensively and established as a risk marker of acute kidney injury (AKI). The aim of this study was to investigate whether kidney tubule injury is associated with the development of AKI and mortality in patients with acute ischaemic stroke. METHODS: Acute ischaemic stroke patients hospitalized in the stroke care unit (SCU) within 24 h after symptom onset were prospectively investigated. AKI was defined on the basis of Kidney Disease: Improving Global Outcomes (KDIGO) criteria. Baseline urinary L-FABP was measured on admission. We evaluated the associations among urinary L-FABP, incidence of AKI, and 90-day mortality adjusted for renal function, albuminuria and other potentially predictive variables, using multivariable analysis. RESULTS: In total, 527 acute ischaemic stroke patients (342 men, median age 74 years) were enrolled in the study. Twenty-seven patients (5.1%) experienced AKI within 7 days of admission. In the univariate analysis, high urinary L-FABP level had positive associations with AKI [53.8 µg/g creatinine (Cr) vs. 3.9 µg/g Cr; P < 0.001] and 90-day mortality (15.5 µg/g Cr vs. 4.0 µg/g Cr; P < 0.001). In the multivariate analysis, elevated urinary L-FABP level (per 10-µg/g Cr increase) was independently associated with AKI (odds ratio 1.225, 95% confidence interval (CI) 1.083-1.454; P = 0.003) and 90-day mortality (hazard ratio 1.091, 95% CI 1.045-1.138; P < 0.001). CONCLUSION: Urinary biomarkers of kidney tubule injury are independently associated with the development of AKI and 90-day mortality in patients with acute ischaemic stroke treated at the SCU.


Assuntos
Injúria Renal Aguda , Isquemia Encefálica , AVC Isquêmico , Injúria Renal Aguda/epidemiologia , Injúria Renal Aguda/etiologia , Idoso , Biomarcadores , Isquemia Encefálica/complicações , Feminino , Humanos , Túbulos Renais , Masculino
6.
Adv Exp Med Biol ; 1232: 85-90, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31893398

RESUMO

Delayed orthostatic hypotension (OH) is a minor subset of orthostatic dysregulation (OD). Cerebral blood oxygenation in juvenile patients with delayed OH has not been studied. We investigated the bilateral changes in cerebral oxygenation in the prefrontal cortex during an active standing test in 23 juvenile patients with delayed OH using near-infrared spectroscopy (NIRS). We measured the oxy-Hb, deoxy-Hb, and total-Hb during the active standing test. Four observations were made during the test: t1 in a resting supine position, t2 when maintaining blood pressure, and the remaining two (t3, t4) during hypotension. The concentration of oxy-Hb significantly decreased prior to satisfying the diagnostic criteria of delayed OH after standing and did not change thereafter. The concentration of deoxy-Hb increased gradually during the measurement periods. In addition, total-Hb increased from t2 to t3. There was no significant difference in the change in each Hb parameter between the left and right cerebral hemispheres. Our results indicate that NIRS parameters are more sensitive than blood pressure for the interpretation of cerebral autoregulation in juvenile patients with delayed OH.


Assuntos
Sistema Cardiovascular , Circulação Cerebrovascular , Hipotensão Ortostática , Oxigênio , Posição Ortostática , Adolescente , Pressão Sanguínea , Circulação Cerebrovascular/fisiologia , Humanos , Hipotensão Ortostática/sangue , Hipotensão Ortostática/diagnóstico , Oxigênio/sangue , Espectroscopia de Luz Próxima ao Infravermelho
7.
Water Sci Technol ; 81(3): 529-534, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32385206

RESUMO

Sludge filterability in membrane bioreactors (MBRs) fluctuates and affects membrane fouling. Therefore, understanding the reasons for the fluctuations of sludge filterability is important for the efficient operation of MBRs. In this study, a pilot-scale MBR treating municipal wastewater was operated for about 600 days and the variations in sludge filterability were continuously monitored by batch-filtration experiments using the same membranes as in the MBR. To investigate the reasons for the deterioration of sludge filterability, constituents in sludge supernatant were intensively monitored, and the correlations with sludge filterability were determined. The concentration of lipopolysaccharides (LPS) in sludge supernatant exhibited significantly higher correlation with sludge filterability than did conventional indexes (i.e. polysaccharides and proteins). Size fractions affecting MBR sludge filterability were also investigated, and it was suggested that colloidal LPS deteriorated MBR sludge filterability. Based on the long-term operation of the MBR, increase in colloidal LPS under low temperatures of the mixed liquor suspension was a key factor in the deterioration of sludge filterability. The impact of LPS increasing under low temperatures should be investigated by operating bench-scale MBRs fed with synthetic wastewater in controlled conditions.


Assuntos
Lipopolissacarídeos , Membranas Artificiais , Reatores Biológicos , Filtração , Esgotos , Temperatura , Eliminação de Resíduos Líquidos
8.
Water Sci Technol ; 80(6): 1011-1021, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31799945

RESUMO

We investigated the operating conditions of a baffled membrane bioreactor (B-MBR) under which long-term stable operation can be achieved through the continuous operation of a pilot-scale B-MBR. Under appropriate operating conditions, the B-MBR was capable of achieving excellent treated water quality in terms of biochemical oxygen demand and concentration of total nitrogen. Excellent removal of total phosphorus was also achieved. In addition, the degree of membrane fouling was acceptable, indicating that stable continuous operation of a B-MBR is possible under the operating conditions adopted in the present study. Estimation of the specific energy consumption in hypothetical full-scale B-MBRs operated under the conditions recommended by the findings was also performed in this study. The results suggest that energy consumption in full-scale B-MBRs would be in the range of 0.20-0.22 kWh/m3. These results strongly suggest that energy consumption in MBR operation can be significantly reduced by applying the concept of a B-MBR.


Assuntos
Membranas Artificiais , Eliminação de Resíduos Líquidos , Reatores Biológicos , Membranas , Fósforo
9.
Scand J Med Sci Sports ; 28(1): 152-160, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-28247579

RESUMO

The purpose of this study was to examine the effect of habitual exercise on urinary liver-type fatty acid-binding protein (L-FABP), which can reflect the degree of various stresses on renal proximal tubule related to the progression of renal disease, in middle-aged and older adults. Cross-sectional and interventional approaches were used to comprehensively achieve this purpose. In the cross-sectional study, we investigated the relationship between physical activity levels and urinary L-FABP levels in 130 middle-aged and older adults. In the interventional study, subjects (n=31) were divided into two groups: exercise (n=19) and control group (n=12), whereby we examined the effects of 12-week aerobic exercise training on urinary L-FABP levels. The cross-sectional study showed that the urinary L-FABP levels were significantly lower in the higher physical activity group than in the lower physical activity group (P<.05). In the interventional study, 12-week aerobic exercise training significantly decreased urinary L-FABP levels (P<.01). Furthermore, the relative changes in urinary L-FABP levels were significantly correlated with the relative changes in physical activity levels and mean arterial pressure after intervention (r=-.374 and r=.530, respectively). Our results revealed that the urinary L-FABP levels were lower in the higher physical activity individuals, and aerobic exercise training decreased urinary L-FABP levels. These results suggest that habitual exercise appears to be associated with a decrease in the degree of several stresses on renal proximal tubule and to be beneficial for kidney health in middle-aged and older adults.


Assuntos
Exercício Físico , Proteínas de Ligação a Ácido Graxo/urina , Idoso , Idoso de 80 Anos ou mais , Biomarcadores/urina , Estudos Transversais , Feminino , Humanos , Túbulos Renais Proximais/fisiologia , Masculino , Pessoa de Meia-Idade
10.
Reprod Domest Anim ; 53(2): 326-332, 2018 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-29134695

RESUMO

Oviducts play roles in reproductive processes, including gametes transport, fertilization and early embryo development. Oviductal transport is controlled by various factors such as endothelins (EDNs) and nitric oxide (NO), smooth muscle contracting and relaxing factor, respectively. EDNs and NO production depend on an ovarian steroid hormone, oestradiol-17ß (E2) and E2 quickly exerts their biological functions through G protein-coupled oestrogen receptor 1 (GPER1), which mediates rapid intracellular signalling. Because follicular fluid which contains a high concentration of E2 enters the oviduct, we hypothesized that E2 in the follicular fluid participates via GPER1 in producing EDNs and NO. To test this hypothesis, we investigated 1) the expression and localization of GPER1 in bovine oviductal tissues and 2) rapid effects of E2 via GPER1 on EDN1, EDN2 and inducible NO synthase (iNOS) expression in cultured bovine oviductal isthmic epithelial cells. GPER1 was observed in the oviductal epithelium, stroma and smooth muscle, and its expression was highest in the isthmus. Short-term treatments (≤1 hr) of E2 increased EDN2 mRNA expression in the isthmic epithelial cells, although E2 did not affect EDN1 and iNOS mRNA expressions. Results of GPER1-selective agonist G-1 and GPER1-selective antagonist G-15 treatments revealed acute stimulation by E2, which is mediated via GPER1. The overall findings suggested that E2 in follicular fluid rapidly stimulates EDN2 expression via GPER1 in the isthmic epithelial cells. Follicular fluid may play a role in retention of the ovulated oocyte in the end of ampulla by contracting the isthmus for successful fertilization.


Assuntos
Estradiol/farmacologia , Contração Muscular/efeitos dos fármacos , Oviductos/efeitos dos fármacos , Receptores Acoplados a Proteínas G/metabolismo , Animais , Bovinos , Técnicas de Cultura de Células , Endotelinas , Feminino , Músculo Liso/efeitos dos fármacos , Óxido Nítrico Sintase/genética , Óxido Nítrico Sintase/metabolismo , RNA Mensageiro , Receptores Acoplados a Proteínas G/efeitos dos fármacos
11.
Water Sci Technol ; 77(11-12): 2803-2811, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-30065132

RESUMO

In this study, we investigated the effects of recirculation and separation times on removals of organic matter, nitrogen, and phosphorus in a baffled membrane bioreactor (B-MBR) treating real municipal wastewater. A pilot-scale B-MBR experimental apparatus was operated under two different sets of recirculation and separation times. The results revealed that, irrespective of operating conditions, the biochemical oxygen demand (BOD) and concentration of total nitrogen (T-N) in the treated water can be lowered to less than 3 and 5 mg/L, respectively. Although T-N was effectively removed in the two different operating conditions, increase in the fraction of recirculation time results in tiny deterioration of nitrogen removal efficiency in the B-MBR. Phosphorus removal efficiency was also slightly decreased as the fraction of recirculation time (ratio between recirculation and separation times) was increased. The results of the measurement of dissolved oxygen (DO) profiles at different points of the B-MBR apparatus indicate that the increase in DO concentration in the anoxic zone of the B-MBR becomes much more pronounced by increasing recirculation intensity. On the basis of the results obtained in this study, it can be concluded that efficient removal of BOD, T-N, and total phosphorus can be achieved by the B-MBR as long as appropriate recirculation intensity is selected.


Assuntos
Reatores Biológicos , Nitrogênio/metabolismo , Eliminação de Resíduos Líquidos/instrumentação , Eliminação de Resíduos Líquidos/métodos , Desnitrificação , Membranas Artificiais , Nitrogênio/análise , Oxigênio/metabolismo , Fósforo/metabolismo , Fatores de Tempo , Águas Residuárias/química
12.
Phys Rev Lett ; 118(10): 107206, 2017 Mar 10.
Artigo em Inglês | MEDLINE | ID: mdl-28339241

RESUMO

Inelastic neutron scattering reveals a broad continuum of excitations in Pr_{2}Zr_{2}O_{7}, the temperature and magnetic field dependence of which indicate a continuous distribution of quenched transverse fields (Δ) acting on the non-Kramers Pr^{3+} crystal field ground state doublets. Spin-ice correlations are apparent within 0.2 meV of the Zeeman energy. A random phase approximation provides an excellent account of the data with a transverse field distribution ρ(Δ)∝(Δ^{2}+Γ^{2})^{-1}, where Γ=0.27(1) meV. Established during high temperature synthesis due to an underlying structural instability, it appears disorder in Pr_{2}Zr_{2}O_{7} actually induces a quantum spin liquid.

13.
Eur J Neurol ; 24(11): 1399-1406, 2017 11.
Artigo em Inglês | MEDLINE | ID: mdl-28799181

RESUMO

BACKGROUND AND PURPOSE: Anticoagulant treatment with a vitamin K antagonist (VKA) has been reported to reduce stroke severity when patients with atrial fibrillation (AF) suffer acute ischaemic stroke (AIS). Direct oral anticoagulant (DOAC) therapy also has the potential to reduce the initial severity of AIS. However, the effect of DOAC therapy on the severity of AIS is not well known. The aim of the present study was to investigate the effect of DOACs on initial stroke severity in patients with AIS and non-valvular AF. METHODS: From March 2011 to July 2016, consecutive patients with AIS having non-valvular AF were recruited. The effects of prior DOAC treatment on severity were assessed by multivariate logistic regression analyses. RESULTS: A total of 484 patients [208 women; median age 79 (interquartile range, 71-85) years; National Institutes of Health Stroke Scale (NIHSS) score 9 (interquartile range, 3-20)] were enrolled. Of these, 352 (73%) were on no anticoagulant medication, 54 (11%) were undertreated with a VKA, 35 (7%) were sufficiently treated (admission prothrombin time-international normalized ratio: ≥2.0 for patients <70 years old and ≥1.6 for ≥70 years old) with a VKA and 43 (9%) were on a DOAC. The initial NIHSS score (median 10 in patients with no anticoagulation, 13 in undertreated VKA, 7 in sufficient VKA and 6 in DOAC, P = 0.018) was different among the groups. Multivariate analysis showed that DOAC was independently and negatively associated with severe (initial NIHSS score ≥ 10) stroke (odds ratio, 0.39; P = 0.041), compared with no anticoagulant therapy. CONCLUSIONS: Direct oral anticoagulant treatment prior to the event should reduce initial stroke severity in patients with AIS and non-valvular AF.


Assuntos
Anticoagulantes/efeitos adversos , Fibrilação Atrial/complicações , Isquemia Encefálica/diagnóstico , Acidente Vascular Cerebral/diagnóstico , Administração Oral , Idoso , Idoso de 80 Anos ou mais , Anticoagulantes/uso terapêutico , Isquemia Encefálica/complicações , Isquemia Encefálica/tratamento farmacológico , Feminino , Humanos , Coeficiente Internacional Normatizado , Masculino , Índice de Gravidade de Doença , Acidente Vascular Cerebral/complicações , Acidente Vascular Cerebral/tratamento farmacológico
15.
Am J Transplant ; 15(1): 155-60, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25521764

RESUMO

Our aim was to determine whether variant bile duct (BD) anatomy is associated with portal vein (PV) and/or hepatic artery (HA) anatomy. We examined the associations between BD anatomy and PV and/or HA anatomy in 407 living donor transplantation donors. We also examined whether the right posterior BD (RPBD) course was associated with the PV and/or HA anatomy. Variant PV, HA and BD anatomies were found in 11%, 25% and 25%, respectively, of 407 donors enrolled in this study. The presence of a variant BD was more frequently associated with a variant PV than with a normal PV (61% vs. 20%, p < 0.0001). By contrast, the presence of a variant HA was not associated with a variant BD. A supraportal RPBD was found in 357 donors (88%) and an infraportal RPBD was found in 50 donors (12%). An infraportal RPBD was significantly more common in donors with a variant PV than in donors with a normal PV (30% vs. 10%, p = 0.0004). Variant PV, but not variant HA, anatomies were frequently associated with variant BD anatomy. Additionally, an infraportal RPBD was more common in donors with a variant PV than in donors with a normal PV.


Assuntos
Ductos Biliares/anatomia & histologia , Artéria Hepática/anatomia & histologia , Hepatopatias/cirurgia , Transplante de Fígado , Doadores Vivos , Veia Porta/anatomia & histologia , Adulto , Feminino , Humanos , Hepatopatias/patologia , Masculino , Estudos Retrospectivos
16.
Phys Rev Lett ; 114(17): 177401, 2015 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-25978262

RESUMO

Bonding characteristics of liquid boron at 2500 K are studied by using high-resolution Compton scattering. An excellent agreement is found between the measurements and the corresponding Car-Parrinello molecular dynamics simulations. Covalent bond pairs are clearly shown to dominate in liquid boron along with the coexistence of diffuse pairs. Our study reveals the complex bonding pattern of liquid boron and gives insight into the unusual properties of this high-temperature liquid.

17.
Vox Sang ; 108(4): 425-7, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25557060

RESUMO

The Am and Bm phenotypes are characterized by weak expression of the A or B antigens, respectively, by red blood cells with a normal expression by the saliva of secretors. Deletion of the regulatory element in the first intron of the ABO gene and disruption of the GATA motif in the element were found to be responsible. In this study, we identified a novel mutation within the GATA motif (G>C substitution at position c.28 + 5830) in the regulatory element of the A allele that might diminish transcription activity causing the generation of the Am B phenotype.


Assuntos
Sistema ABO de Grupos Sanguíneos/genética , Células Eritroides/metabolismo , Fenótipo , Mutação Puntual , Sequências Reguladoras de Ácido Nucleico , Alelos , Sequência de Bases , Sítios de Ligação , Doadores de Sangue , Fatores de Transcrição GATA/metabolismo , Humanos , Íntrons , Dados de Sequência Molecular , Deleção de Sequência
18.
Parasite Immunol ; 36(2): 87-99, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24400637

RESUMO

We previously showed that treatment of mice with the Flt3 ligand (Flt3L) prevents development of lethal experimental cerebral malaria and inhibits parasitemia during Plasmodium berghei ANKA (PbA) infection. In this study, we investigated the mechanisms underlying the reduction of parasitemia in Flt3L-treated mice. Studies using gene knockout mice and antibody treatment indicated that the anti-parasitemia effect of Flt3L was mediated by innate immune system and was dependent on MyD88, IFN-γ, IL-12 and natural killer (NK) cells. The number of NK cells and their ability to produce IFN-γ was enhanced in Flt3L-treated mice. Phagocytic activity of splenocytes was increased in Flt3L-treated mice after PbA infection when compared with that in untreated mice, and this activity was mainly mediated by the accumulation of F4/80(mid) CD11b(+) cells in the spleen. In both MyD88(-/-) and IFN-γ(-/-) mice, the proportion of F4/80(mid) CD11b(+) cells was not increased in the spleen of Flt3L-treated mice after infection. These correlations suggest that NK cells produce IFN-γ in Flt3L-treated mice, and accumulation of F4/80(mid) CD11b(+) cells in the spleen is promoted by an IFN-γ -dependent manner, culminating in the inhibition of parasitemia. These findings imply that Flt3L promotes effective innate immunity against malaria infection mediated by interplay among varieties of innate immune cells.


Assuntos
Imunidade Inata , Interferon gama/imunologia , Malária/imunologia , Proteínas de Membrana/imunologia , Plasmodium berghei , Animais , Feminino , Interleucina-12/imunologia , Células Matadoras Naturais/imunologia , Malária/parasitologia , Proteínas de Membrana/sangue , Proteínas de Membrana/genética , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Fator 88 de Diferenciação Mieloide/fisiologia , Parasitemia/imunologia , Fagocitose , Plasmodium berghei/crescimento & desenvolvimento , Plasmodium berghei/imunologia , Baço/citologia , Baço/imunologia , Transdução Genética
19.
Eur J Neurol ; 21(3): 402-10, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-24517878

RESUMO

BACKGROUND AND PURPOSE: Hyperglycemia is recognized as a common occurrence associated with a high risk of poor outcome in ischaemic stroke patients. However, little is known about the association between elevated glucose level, growth of infarct volume and neurological deterioration in ischaemic stroke patients without diabetes. The present study aimed to clarify this issue in acute ischaemic stroke patients with arterial occlusion. METHODS: We studied 375 acute ischaemic stroke patients with arterial occlusion within 24 h of onset. Diabetes was diagnosed in patients with a known history of diabetes or HbA1c value ≥ 6.5%. Infarct volume was measured on admission and at follow-up within 48 h using diffusion-weighted imaging. Neurological deterioration was defined as an increase of ≥ 4 points in National Institutes of Health Stroke Scale score within 7 days of stroke onset. We examined the relationship between glucose level on admission, infarct volume growth and neurological deterioration in three categories (all patients, non-diabetes and diabetes) using multivariate modeling. RESULTS: Diabetes was present in 104 patients (27.7%). Multivariate regression analysis showed that elevated glucose level was independently associated with infarct volume growth in all patients (P = 0.034) and non-diabetes (P = 0.002), but not in diabetes (P = 0.871). Moreover, elevated glucose level was independently associated with neurological deterioration in all patients [odds ratio (OR), 1.010; 95% confidence interval (CI), 1.004-1.017; P = 0.002] and non-diabetes (OR, 1.014; 95% CI, 1.002-1.026; P = 0.022), but not diabetes (OR, 1.006; 95% CI, 0.998-1.014; P = 0.151). CONCLUSIONS: Glucose level appears to influence infarct volume growth and neurological deterioration, particularly in non-diabetic patients with ischaemic stroke.


Assuntos
Infarto Encefálico/etiologia , Complicações do Diabetes/fisiopatologia , Hiperglicemia/etiologia , Acidente Vascular Cerebral/complicações , Idoso , Idoso de 80 Anos ou mais , Imagem de Difusão por Ressonância Magnética , Feminino , Seguimentos , Humanos , Angiografia por Ressonância Magnética , Imageamento por Ressonância Magnética , Masculino , Exame Neurológico , Análise de Regressão , Estudos Retrospectivos , Acidente Vascular Cerebral/etiologia
20.
Eur J Neurol ; 21(2): 344-8, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24313997

RESUMO

BACKGROUND AND PURPOSE: Sleep-disordered breathing (SDB) is a risk factor for stroke. The frequency of SDB in Japanese patients with acute intracerebral hemorrhage (ICH) was investigated, as well as factors associated with SDB severity. METHODS: Between April 2010 and April 2013, patients with ICH within 24 h of onset were prospectively enrolled to participate in a sleep study within 7 days of admission. SDB was defined as a respiratory disturbance index (RDI: apnea or hypopnea events per hour) of ≥ 5. Patients were assigned to groups based on RDI values of ≥ 30 (severe SDB) and <30 (absent or not severe SDB). The frequency of SDB and factors associated with its severity were investigated using multivariate logistic regression analysis. RESULTS: Of 97 patients (55 males; mean age 68.1 years) enrolled in the study, 91 (94%) had SDB. Severe SDB was evident in 29 (30%) patients. Compared with the RDI< 30 group, the RDI ≥ 30 group had a higher frequency of dysarthria plus dysphagia (76% vs. 47%, P = 0.008), larger waist circumference [86 (84-92) vs. 84 (78-88) cm, P = 0.019] and a greater body mass index [23.8 (21.1-26.8) vs. 21.5 (19.4-25.0) kg/m(2), P = 0.046]. Multivariate logistic regression analysis showed that dysarthria plus dysphagia was independently associated with severe SDB (odds ratio 3.4; 95% confidence interval 1.250-9.252, P = 0.017). CONCLUSION: Most Japanese patients with acute ICH had SDB, and dysarthria plus dysphagia was associated with severe SDB.


Assuntos
Hemorragia Cerebral/complicações , Transtornos de Deglutição/complicações , Disartria/complicações , Síndromes da Apneia do Sono/complicações , Idoso , Idoso de 80 Anos ou mais , Índice de Massa Corporal , Hemorragia Cerebral/fisiopatologia , Transtornos de Deglutição/fisiopatologia , Disartria/fisiopatologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Polissonografia , Estudos Prospectivos , Fatores de Risco , Síndromes da Apneia do Sono/fisiopatologia , Circunferência da Cintura
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