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BACKGROUND/AIM: Clinical trials have shown that the efficacy of a reduced dose of cabazitaxel (20 mg/m2 every 3 weeks) was not inferior to that of the standard dose (25 mg/m2 every 3 weeks). However, the efficacy of even lower relative dose intensities, such as 20 mg/m2 every 4 weeks, have not been evaluated conclusively. The aim of this study was to investigate the efficacy and safety of a low relative dose intensity of cabazitaxel in patients with metastatic castration-resistant prostate cancer in the real world. PATIENTS AND METHODS: We retrospectively analyzed 101 consecutive patients treated with cabazitaxel for docetaxel-refractory metastatic castration-resistant prostate cancer. The progression-free and overall survival after introduction of cabazitaxel and prostate-specific antigen response rate were assessed as oncological outcome measures. RESULTS: The patients were divided into two groups (relative dose intensity >60%, n=74 and ≤60%, n=27). Both progression-free and overall survivals were significantly better in the >60% group than in the ≤60% group (median 5 and 2 months, p<0.01, and 15 and 6 months, p<0.01, respectively). In multivariate analyses, visceral metastasis and relative dose intensity ≤60% were prognostic factors for shorter progression-free and overall survivals (p=0.04, p<0.01, respectively). The incidence of adverse events was not significantly different between groups. CONCLUSION: The cabazitaxel relative dose intensity ≤60% group had significantly shorter progression-free and overall survivals than the >60% group, whereas the incidence of adverse events was not significantly different. The results suggested that reducing the relative dose intensity of cabazitaxel to ≤60% may not be recommended.
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Neoplasias de la Próstata Resistentes a la Castración , Masculino , Humanos , Resultado del Tratamiento , Neoplasias de la Próstata Resistentes a la Castración/patología , Estudios Retrospectivos , Supervivencia sin Enfermedad , Antígeno Prostático EspecíficoRESUMEN
BACKGROUND/AIM: A recent clinical trial indicated the usefulness of local radiation therapy of the prostate in patients with low-volume metastatic prostate cancer. High-dose-rate brachytherapy (HDR-BT) is used mainly for high-risk, localized, and locally advanced cases. However, few studies exist on the efficacy of HDR-BT and external beam radiation therapy (EBRT) for metastatic prostate cancer. PATIENTS AND METHODS: We conducted a retrospective analysis of 39 patients diagnosed with regional lymph node metastasis and/or a limited number of metastases who underwent HDR-BT and EBRT with long-term androgen deprivation therapy. We utilized Cox's proportional hazards models to identify predictors of oncological outcomes. Treatment outcomes, including biochemical recurrence-free survival (BCRFS), clinical progression-free survival (CPFS), and castration-resistant prostate cancer-free survival (CRPCFS), were compared according to the clinical stage. RESULTS: The median follow-up duration was 49 months (range=23-136 months). The 5-year BCRFS, CPFS, CRPCFS, and cancer-specific survival rates were 62.2%, 67.2%, 83.2%, and 93.4%, respectively. Based on Kaplan-Meier analysis, N1M0 and N0-1M1b showed favorable outcomes compared with N1M1a. Multivariate analysis revealed that N1M1a prostate cancer was an independent risk factor for poor BCRFS, CPFS, and CRPCFS. CONCLUSION: HDR-BT and EBRT with androgen deprivation therapy is a feasible approach for patients with newly diagnosed regional and low-metastatic-burden prostate cancer. However, in our cohort M1a prostate cancer had significantly inferior outcomes. A well-controlled prospective study is imperative to confirm our results.
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Braquiterapia , Neoplasias de la Próstata , Masculino , Humanos , Braquiterapia/métodos , Neoplasias de la Próstata/tratamiento farmacológico , Neoplasias de la Próstata/radioterapia , Neoplasias de la Próstata/patología , Antagonistas de Andrógenos/uso terapéutico , Andrógenos , Estudios Retrospectivos , Estudios Prospectivos , Próstata/patología , Dosificación RadioterapéuticaRESUMEN
INTRODUCTION: The assessment of facial symmetry, after mandibular reconstruction, currently relies on subjective esthetic assessment by an evaluator. The present study aimed to compare conventional subjective assessment with quantitative evaluation by three-dimensional (3D) stereophotogrammetry of facial cosmetic symmetry. METHODS: This retrospective study enrolled 20 patients who underwent mandibular reconstruction with free fibula flap after segmental resection between 2014 and 2018. Subjective assessments were performed by seven clinicians at 6-12 months after surgery. Simultaneously, lower face symmetry was measured by 3D stereophotogrammetry with the VECTRA H1 system and recorded as the root mean square deviation (RMSD). Data from the subjective and quantitative evaluations were compared using Spearman's rank correlation coefficient. RESULTS: The results showed that subjective assessments were strongly and negatively correlated with RMSD (P=0.00000128). This confirmed that RMSD, obtained by 3D stereophotogrammetry, reflected the subjective assessment of symmetry in our cohort. CONCLUSIONS: Three-dimensional stereophotogrammetry of facial cosmetic symmetry will be an available quantitative method for patients with head and neck cancer after mandibular reconstruction.
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Colgajos Tisulares Libres , Neoplasias de Cabeza y Cuello , Reconstrucción Mandibular , Humanos , Fotogrametría , Estudios RetrospectivosRESUMEN
We report on a new measurement of the beam transverse single spin asymmetry in electron-proton elastic scattering, A_{â¥}^{ep}, at five beam energies from 315.1 to 1508.4 MeV and at a scattering angle of 30°<θ<40°. The covered Q^{2} values are 0.032, 0.057, 0.082, 0.218, 0.613 (GeV/c)^{2}. The measurement clearly indicates significant inelastic contributions to the two-photon-exchange (TPE) amplitude in the low-Q^{2} kinematic region. No theoretical calculation is able to reproduce our result. Comparison with a calculation based on unitarity, which only takes into account elastic and πN inelastic intermediate states, suggests that there are other inelastic intermediate states such as ππN, KΛ, and ηN. Covering a wide energy range, our new high-precision data provide a benchmark to study those intermediate states.
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12-lipoxygenase (12-LOX) is one of several enzyme isoforms responsible for the metabolism of arachidonic acid and other poly-unsaturated fatty acids to both pro- and anti-inflammatory lipid mediators. Mounting evidence has shown that 12-LOX plays a critical role in the modulation of inflammation at multiple checkpoints during diabetes development. Due to this, interventions to limit pro-inflammatory 12-LOX metabolites either by isoform-specific 12-LOX inhibition, or by providing specific fatty acid substrates via dietary intervention, has the potential to significantly and positively impact health outcomes of patients living with both type 1 and type 2 diabetes. To date, the development of truly specific and efficacious inhibitors has been hampered by homology of LOX family members; however, improvements in high throughput screening have improved the inhibitor landscape. Here, we describe the function and role of human 12-LOX, and mouse 12-LOX and 12/15-LOX, in the development of diabetes and diabetes-related complications, and describe promise in the development of strategies to limit pro-inflammatory metabolites, primarily via new small molecule 12-LOX inhibitors.
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Araquidonato 12-Lipooxigenasa/metabolismo , Complicaciones de la Diabetes/enzimología , Diabetes Mellitus Tipo 1/enzimología , Diabetes Mellitus Tipo 2/enzimología , Animales , Araquidonato 15-Lipooxigenasa/metabolismo , Humanos , Células Secretoras de Insulina/enzimología , Inhibidores de la Lipooxigenasa/farmacología , Transducción de SeñalRESUMEN
Strongly enhanced quantum fluctuations often lead to a rich variety of quantum-disordered states. Developing approaches to enhance quantum fluctuations may open paths to realize even more fascinating quantum states. Here, we demonstrate that a coupling of localized spins with the zero-point motion of hydrogen atoms, that is, proton fluctuations in a hydrogen-bonded organic Mott insulator provides a different class of quantum spin liquids (QSLs). We find that divergent dielectric behavior associated with the approach to hydrogen-bond order is suppressed by the quantum proton fluctuations, resulting in a quantum paraelectric (QPE) state. Furthermore, our thermal-transport measurements reveal that a QSL state with gapless spin excitations rapidly emerges upon entering the QPE state. These findings indicate that the quantum proton fluctuations give rise to a QSL-a quantum-disordered state of magnetic and electric dipoles-through the coupling between the electron and proton degrees of freedom.
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Psoriasis is a chronic inflammatory skin disease characterized by the infiltration of T cell and other immune cells to the skin in response to injury or autoantigens. Conventional, as well as unconventional, γδ T cells are recruited to the dermis and epidermis by CCL20 and other chemokines. Together with its receptor CCR6, CCL20 plays a critical role in the development of psoriasiform dermatitis in mouse models. We screened a panel of CCL20 variants designed to form dimers stabilized by intermolecular disulfide bonds. A single-atom substitution yielded a CCL20 variant (CCL20 S64C) that acted as a partial agonist for the chemokine receptor CCR6. CCL20 S64C bound CCR6 and induced intracellular calcium release, consistent with G-protein activation, but exhibited minimal chemotactic activity. Instead, CCL20 S64C inhibited CCR6-mediated T cell migration with nominal impact on other chemokine receptor signaling. When given in an IL-23-dependent mouse model for psoriasis, CCL20 S64C prevented psoriatic inflammation and the up-regulation of IL-17A and IL-22. Our results validate CCR6 as a tractable therapeutic target for psoriasis and demonstrate the value of CCL20 S64C as a lead compound.
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Quimiocina CCL20/genética , Dermatitis/terapia , Mutagénesis Sitio-Dirigida/métodos , Psoriasis/terapia , Receptores CCR6/metabolismo , Animales , Terapia Biológica/métodos , Células COS , Quimiocina CCL20/inmunología , Quimiocina CCL20/metabolismo , Chlorocebus aethiops , Cristalografía por Rayos X , Dermatitis/inmunología , Modelos Animales de Enfermedad , Epidermis/inmunología , Epidermis/metabolismo , Humanos , Interleucina-23/inmunología , Ratones , Psoriasis/inmunología , Receptores CCR6/inmunología , Linfocitos T/inmunologíaRESUMEN
Cilia-driven nodal flow is important in the determination of left-right asymmetry in the body. Several theoretical and computational models have been proposed to explain the mechanics of ciliary motion, although the full mechanism remains unknown. Here, we developed a three-dimensional nodal cilia axoneme model using a finite element-boundary element coupling method, and investigated the mechanics of nodal ciliary motion. We found that the rotational orbit was strongly dependent on the dynein activation frequency. We also investigated flow field generated by the ciliary rotation, and the flow strength decayed as r-3 at the far field from the cilium. Our numerical results also suggest that experimentally observed tilt angle θ=2π/9 is sufficiently large to make a leftward flow. These findings are helpful in better understanding ciliary motion and nodal flow.
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Axonema/ultraestructura , Cilios/ultraestructura , Algoritmos , Cilios/fisiología , Simulación por Computador , Dineínas/química , Análisis de Elementos Finitos , Modelos Moleculares , Movimiento (Física) , Estructura Cuaternaria de ProteínaRESUMEN
New measurements of the beam normal single spin asymmetry in the electron elastic and quasielastic scattering on the proton and deuteron, respectively, at large backward angles and at ⟨Q^{2}⟩=0.22 (GeV/c)^{2} and ⟨Q^{2}⟩=0.35 ( GeV/c)^{2} are reported. The experimentally observed asymmetries are compared with the theoretical calculation of Pasquini and Vanderhaeghen [Phys. Rev. C 70, 045206 (2004).PRVCAN0556-281310.1103/PhysRevC.70.045206]. The agreement of the measurements with the theoretical calculations shows a dominance of the inelastic intermediate excited states of the nucleon, πN and the Δ resonance. The measurements explore a new, important parameter region of the exchanged virtual photon virtualities.
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This study aimed to compare the reliability and magnitude of conditioned pain modulation (CPM) by applying different test stimuli (TS) and conditioning stimuli (CS). Twenty-six healthy male participants were recruited in the study of two identical sessions. In each session, four TS (electrical, heat, handheld, and cuff pressure algometry) were applied before and during CS (cold pressor test (CPT) or cuff algometry). The same procedure was repeated with 45-min intervals, but with the other CS. Five thresholds were measured including four pain detection thresholds from four TS and pain tolerance threshold from cuff TS (cuff PTT). Intraclass correlation coefficient (ICC (3,1)) and coefficient of variation (CV) were calculated as measures of reliability. The reliability of TS before and during CS was good for all combinations (ICC: 0.60-0.96, CV: 2.2-22.9%), but the reliability of the CPM effect varied (ICC: 0.04-0.53, CV: 63.6-503.9%). The most reliable combinations were considered to be the handheld pressure pain threshold with CPT (ICC: 0.49, CV: 63.6%) and the cuff pressure pain threshold with CPT (ICC: 0.44, CV: 107.6%). Significant CPM effects were found for all combinations, except the combinations of electrical and heat pain thresholds with cuff CS, which indicates the novel classification of the CPM mechanism. The combinations of handheld pressure and heat pain threshold with CPT would provide the minimum sample size to detect the significant CPM changes in further studies. It is beneficial to provide and compare both ICC and CV to design further clinical trials.
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Condicionamiento Psicológico/fisiología , Hiperalgesia/fisiopatología , Umbral del Dolor/fisiología , Adulto , Análisis de Varianza , Voluntarios Sanos , Humanos , Masculino , Dimensión del Dolor , Estimulación Física , Presión , Reproducibilidad de los Resultados , Adulto JovenRESUMEN
Serous tubal intraepithelial carcinoma (STIC) is considered the precursor of pelvic serous carcinomas and the earliest malignant alteration in BRCA mutation-positive women. Recently, risk-reducing salpingo-oophorectomy (RRSO) is being performed in BRCA mutation-positive women and STIC is often discovered incidentally in the fallopian tubes. A 62-year-old woman underwent bilateral salpingo-oophorectomy (BSO) for ovarian cysts. Ten months later, cytological screening for the endometrium revealed adenocarcinoma. No atypical tissue was detected by the endometrial curettage. Imaging tests and hysteroscopy found no abnormal findings. She underwent hysterectomy and was diagnosed with STIC originating from the intrauterine portion of the residual fallopian tube. Here, the authors report the first case of STIC being detected during an endometrial cytological examination after BSO. Although STIC associated with the BRCA mutation usually involves the distal fallopian tube, the present case suggests that the intrauterine portion of the fallopian tube should be removed or cauterized during RRSO.
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Carcinoma in Situ/etiología , Cistadenocarcinoma Seroso/etiología , Neoplasias de las Trompas Uterinas/etiología , Quistes Ováricos/cirugía , Ovariectomía , Femenino , Genes BRCA1 , Humanos , Persona de Mediana Edad , MutaciónRESUMEN
This study investigated whether itch induced by intra-epidermal histamine is subjected to modulation by a standardized conditioned pain modulation (CPM) paradigm in 24 healthy volunteers. CPM was induced by computer-controlled cuff pressure algometry and histamine was introduced to the volar forearm by skin prick test punctures. Moreover, neurogenic inflammation and wheal reactions induced by histamine and autonomic nervous system responses (heart rate variability and skin conductance) were monitored. CPM did not modulate the intensity of histamine-induced itch suggesting that pruriceptive signaling is not inhibited by pain-recruited endogenous modulation, however, CPM was found to aggravate histamine-induced neurogenic inflammation, likely facilitated by efferent sympathetic fibers.
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Agonistas de los Receptores Histamínicos/efectos adversos , Histamina/efectos adversos , Inflamación Neurogénica/inducido químicamente , Dolor/fisiopatología , Prurito/inducido químicamente , Adulto , Femenino , Respuesta Galvánica de la Piel/efectos de los fármacos , Voluntarios Sanos , Frecuencia Cardíaca/efectos de los fármacos , Humanos , Masculino , Umbral del Dolor/efectos de los fármacos , Umbral del Dolor/fisiología , Piel/inervación , Estadística como Asunto , Adulto JovenRESUMEN
A 46-year-old female was treated with a regimen of paclitaxel and carboplatin (TC therapy) as adjuvant chemotherapy for Stage IC ovarian adenocarcinoma. There was no severe toxicity except for grade 3 neutropenia during the first four cycles of TC therapy. However, she developed acute pancreatitis at 14 days after fifth cycle. TC therapy is commonly associated with adverse effects such as myelosuppression, hypersensitivity, alopecia, and peripheral neuropathy, but acute pancreatitis has rarely been reported. Ovarian cancer patients often present with nausea and abdominal pain, which are the same symptoms of pancreatitis. It is very important to keep in mind that acute pancreatitis may be concealed in these common symptoms of ovarian cancer during and after TC therapy. Because acute pancreatitis is fatal complication and quitting the drug usually leads to complete cure. The authors report an uncommon case in which TC therapy may have caused acute pancreatitis.
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Adenocarcinoma/tratamiento farmacológico , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Neoplasias Ováricas/tratamiento farmacológico , Pancreatitis/inducido químicamente , Enfermedad Aguda , Carboplatino/administración & dosificación , Carboplatino/efectos adversos , Quimioterapia Adyuvante , Femenino , Humanos , Persona de Mediana Edad , Paclitaxel/administración & dosificación , Paclitaxel/efectos adversos , Pancreatitis/diagnóstico por imagen , Tomografía Computarizada por Rayos XRESUMEN
Red blood cells migrate to the center of the blood vessel in a process called axial migration, while other blood cells, such as white blood cells and platelets, are disproportionately found near the blood vessel wall. However, much is still unknown concerning the lateral migration of cells in the blood; the specific effect of hydrodynamic factors such as a wall or a shear gradient is still unclear. In this study, we investigate the lateral migration of a capsule using the boundary integral method, in order to compute exactly an infinite computational domain for an unbounded parabolic flow and a semi-infinite computational domain for a near-wall parabolic flow in the limit of Stokes flow. We show that the capsule lift velocity in an unbounded parabolic flow is linear with respect to the shear gradient, while the lift velocity in a near-wall parabolic flow is dependent on the distance to the wall. Then, using these relations, we give an estimation of the relative effect of the shear gradient as a function of channel width and distance between the capsule and the wall. This estimation can be used to determine cases in which the effect of the shear gradient or wall can be neglected; for example, the formation of the cell-free layer in blood vessels is determined to be unaffected by the magnitude of the shear gradient.
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Eritrocitos/fisiología , Modelos Cardiovasculares , Velocidad del Flujo Sanguíneo , Hemorreología , HidrodinámicaRESUMEN
ZFP521 was previously identified as a putative gene involved in induction of B-cell lymphomagenesis. However, the contribution of ZFP521 to lymphomagenesis has not been confirmed. In this study, we sought to elucidate the role of ZFP521 in B-cell lymphomagenesis. To this end, we used a retroviral insertion method to show that ZFP521 was a target of mutagenesis in pre-B-lymphoblastic lymphoma cells. The pre-B-cell receptor (pre-BCR) signaling molecules BLNK, BTK and BANK1 were positively regulated by the ZFP521 gene, leading to enhancement of the pre-BCR signaling pathway. In addition, c-myc and c-jun were upregulated following activation of ZFP521. Stimulation of pre-BCR signaling using anti-Vpreb antibodies caused aberrant upregulation of c-myc and c-jun and of Ccnd3, which encodes cyclin D3, thereby inducing the growth of pre-B cells. Stimulation with Vpreb affected the growth of pre-B cells, and addition of interleukin (IL)-7 receptor exerted competitive effects on pre-B-cell growth. Knockdown of BTK and BANK1, targets of ZFP521, suppressed the effects of Vpreb stimulation on cell growth. Furthermore, in human lymphoblastic lymphoma, analogous to pre-B-cell lymphoma in mice, the expression of ZNF521, the homolog of ZFP521 in humans, was upregulated. In conclusion, our data showed that the ZFP521 gene comprehensively induced pre-B-cell lymphomagenesis by modulating the pre-B-cell receptor signaling pathway.
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Receptores de Células Precursoras de Linfocitos B/metabolismo , Leucemia-Linfoma Linfoblástico de Células Precursoras/metabolismo , Células Precursoras de Linfocitos B/metabolismo , Factores de Transcripción/metabolismo , Proteínas Adaptadoras Transductoras de Señales/genética , Proteínas Adaptadoras Transductoras de Señales/metabolismo , Agammaglobulinemia Tirosina Quinasa , Animales , Línea Celular , Proliferación Celular/genética , Ciclina D3/genética , Ciclina D3/metabolismo , Modelos Animales de Enfermedad , Regulación de la Expresión Génica , Humanos , Immunoblotting , Inmunohistoquímica , Ratones Endogámicos C57BL , Ratones Endogámicos , Receptores de Células Precursoras de Linfocitos B/genética , Leucemia-Linfoma Linfoblástico de Células Precursoras/genética , Proteínas Tirosina Quinasas/genética , Proteínas Tirosina Quinasas/metabolismo , Proteínas Proto-Oncogénicas c-jun/genética , Proteínas Proto-Oncogénicas c-jun/metabolismo , Proteínas Proto-Oncogénicas c-myc/genética , Proteínas Proto-Oncogénicas c-myc/metabolismo , Interferencia de ARN , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Transducción de Señal/genética , Factores de Transcripción/genéticaRESUMEN
We previously demonstrated that human mandibular fracture haematoma-derived cells (MHCs) play an important role in mandibular fracture healing and that low-intensity pulsed ultrasound (LIPUS) accelerates this effect by stimulating various osteogenic cytokines. In the present study, we investigated how LIPUS affects the expression of bone morphogenetic proteins (BMPs), which are also known to have the ability to induce bone formation. MHCs were isolated from human mandibular fracture haematomas and the cells were divided into two groups: a LIPUS (+) group and a LIPUS (-) group, both of which were cultured in osteogenic medium. LIPUS was applied to the LIPUS (+) group 20 min a day for 4, 8, 14, and 20 days (1.5 MHz, 30 mW/cm(2)). Real-time PCR and immunofluorescence studies were carried out to determine the expression of BMP-2, 4, and 7. Compared to the LIPUS (-) group, gene expression levels were significantly increased in the LIPUS (+) group for BMP-2 on day 20 (67.38 ± 26.59 vs. 11.52 ± 3.42, P < 0.001), for BMP-4 on days 14 (45.12 ± 11.06 vs. 9.20 ± 2.88, P = 0.045) and 20 (40.96 ± 24.81 vs. 3.22 ± 1.53, P = 0.035), and for BMP-7 on day 8 (48.11 ± 35.36 vs. 7.03 ± 3.96, P = 0.034). These findings suggest that BMP-2, 4, and 7 may be mediated by LIPUS therapy during the bone repair process.
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Proteínas Morfogenéticas Óseas/metabolismo , Curación de Fractura , Hematoma/metabolismo , Hematoma/terapia , Mandíbula/citología , Fracturas Mandibulares/metabolismo , Fracturas Mandibulares/terapia , Terapia por Ultrasonido/métodos , Adolescente , Adulto , Anciano , Femenino , Humanos , Masculino , Microscopía Fluorescente , Persona de Mediana Edad , Osteogénesis , ARN Mensajero/metabolismo , Reacción en Cadena en Tiempo Real de la Polimerasa , Ondas UltrasónicasAsunto(s)
Neoplasias Hepáticas , Biomarcadores de Tumor/análisis , Ablación por Catéter , Detección Precoz del Cáncer , Intervención Médica Temprana , Humanos , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/etiología , Neoplasias Hepáticas/cirugía , Neoplasias Hepáticas/terapia , Imagen MultimodalRESUMEN
BACKGROUND: Rapid increases in life expectancy have led to concurrent increases in the number of elderly people living alone or those forced to change living situations. Previous studies have found that poor dietary intake was common in elderly people living alone. However, there have been few studies about the dietary intake in elderly people living in other situations, particularly those living with family other than a spouse (nonspouse family), which is common in Japan. OBJECTIVE: To examine the differences in dietary intake by different living situations in elderly Japanese people. We analyzed the data of 1542 healthy residents in the town of Ohasama aged 60 years and over who had completed self-administered questionnaires. METHODS: The dietary intake was measured using a validated 141-item food frequency questionnaire. Multiple regression models with robust (White-corrected) standard errors were individually fitted for nutrients and foods by living situation. RESULTS: In men, although the presence of other family was correlated with significantly lower intake of protein-related foods, e.g., legumes, fish and shellfish, and dairy products, these declines were more serious in men living with nonspouse family. Conversely, in men living alone the intake of fruits and vegetables was significantly lower. In women, lower intakes of fruit and protein-related foods were significantly more common in participants living with nonspouse family than those living with only a spouse. CONCLUSION: These findings revealed that elderly people living alone as well as those living with family other than a spouse had poor dietary intake, suggesting that strategies to improve food choices and skills for food preparation could promote of healthy eating in elderly Japanese people.
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Pueblo Asiatico , Dieta/estadística & datos numéricos , Composición Familiar , Salud , Encuestas Nutricionales , Estado Nutricional , Anciano , Animales , Productos Lácteos , Conducta Alimentaria , Femenino , Frutas , Evaluación Geriátrica , Humanos , Japón/epidemiología , Masculino , Persona de Mediana Edad , Alimentos Marinos , Autoinforme , Encuestas y Cuestionarios , VerdurasRESUMEN
We investigated changes in the sensitivity of cutaneous points and the oral mucosa after sagittal split ramus osteotomy (SSRO) and assessed the differences between SSRO and intraoral vertical ramus osteotomy (IVRO). The subjects included in this study were 46 patients with mandibular prognathism who underwent IVRO (88 rami) and 30 patients who underwent SSRO (59 rami). An objective evaluation of the neurosensory status of each patient was completed preoperatively and at 1, 4, 8, 12, and 24 weeks postoperatively. Other variables studied for each patient included sex, age, magnitude of mandibular setback, and amount of blood loss during surgery. We found that a neurosensory recovery occurred earlier in the oral mucosa than at cutaneous points. The number of oral mucosa points showing reduced neurosensory function and neurosensory disturbance after SSRO was significantly higher than after IVRO at 1, 4, and 8 weeks (P<0.05). The nerve recovery observed after SSRO was delayed for a longer period than that noted in our previous study of IVRO. In conclusion, we found changes in sensitivity at cutaneous points and the oral mucosa after SSRO and assessed the differences between SSRO and IVRO.