Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 177
Filtrar
1.
Chemotherapy ; 69(1): 45-48, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-37820606

RESUMO

Vascular endothelial growth factor receptor tyrosine kinase inhibitors are known to cause perforation as one of their severe side effects, and postoperative and postradiation therapy are known risk factors. However, there are few studies on perforation following tumor shrinkage. A 78-year-old woman with postoperative recurring left collecting duct carcinoma of the right hilar lymph nodes and mediastinum underwent eight courses of nivolumab plus cabozantinib, resulting in tumor shrinkage. Three days after the last administration, she developed fever and cough and was hospitalized for right lobar pneumonia. The patient received long-term antibiotics for bronchial fistula with the destruction of the bronchial wall and secondary lung abscess. When using nivolumab plus cabozantinib combination therapy for a tumor with bronchial invasion, physicians should be aware of bronchial perforation as the tumor shrinks.


Assuntos
Anilidas , Carcinoma de Células Renais , Neoplasias Renais , Piridinas , Feminino , Humanos , Idoso , Carcinoma de Células Renais/tratamento farmacológico , Carcinoma de Células Renais/patologia , Nivolumabe/uso terapêutico , Neoplasias Renais/tratamento farmacológico , Neoplasias Renais/patologia , Fator A de Crescimento do Endotélio Vascular/uso terapêutico , Recidiva Local de Neoplasia/tratamento farmacológico
2.
Nano Lett ; 23(24): 11630-11637, 2023 Dec 27.
Artigo em Inglês | MEDLINE | ID: mdl-38038680

RESUMO

Phase contrast imaging techniques enable the visualization of disparities in the refractive index among various materials. However, these techniques usually come with a cost: the need for bulky, inflexible, and complicated configurations. Here, we propose and experimentally demonstrate an ultracompact meta-microscope, a novel imaging platform designed to accomplish both optical and digital phase contrast imaging. The optical phase contrast imaging system is composed of a pair of metalenses and an intermediate spiral phase metasurface located at the Fourier plane. The performance of the system in generating edge-enhanced images is validated by imaging a variety of human cells, including lung cell lines BEAS-2B, CLY1, and H1299 and other types. Additionally, we integrate the ResNet deep learning model into the meta-microscope to transform bright-field images into edge-enhanced images with high contrast accuracy. This technology promises to aid in the development of innovative miniature optical systems for biomedical and clinical applications.


Assuntos
Microscopia , Dispositivos Ópticos , Humanos , Microscopia/métodos , Microscopia de Contraste de Fase/métodos , Imagem Óptica
3.
Medicina (Kaunas) ; 60(6)2024 Jun 12.
Artigo em Inglês | MEDLINE | ID: mdl-38929589

RESUMO

Chronic endometritis (CE) is an inflammatory pathologic condition of the uterine mucosa characterized by unusual infiltration of CD138(+) endometrial stromal plasmacytes (ESPCs). CE is often identified in infertile women with unexplained etiology, tubal factors, endometriosis, repeated implantation failure, and recurrent pregnancy loss. Diagnosis of CE has traditionally relied on endometrial biopsy and histopathologic/immunohistochemistrical detection of ESPCs. Endometrial biopsy, however, is a somewhat painful procedure for the subjects and does not allow us to grasp the whole picture of this mucosal tissue. Meanwhile, fluid hysteroscopy has been recently adopted as a less-invasive diagnostic modality for CE. We launched the ARCHIPELAGO (ARChival Hysteroscopic Image-based Prediction for histopathologic chronic Endometritis in infertile women using deep LeArninG mOdel) study to construct the hysteroscopic CE finding-based prediction tools for histopathologic CE. The development of these deep learning-based novel models and computer-aided detection/diagnosis systems potentially benefits infertile women suffering from this elusive disease.


Assuntos
Aprendizado Profundo , Endometrite , Histeroscopia , Humanos , Feminino , Endometrite/diagnóstico , Histeroscopia/métodos , Doença Crônica , Infertilidade Feminina/etiologia , Endométrio/patologia
4.
Pediatr Res ; 2023 Oct 19.
Artigo em Inglês | MEDLINE | ID: mdl-37857850

RESUMO

BACKGROUND: The association between prenatal metal exposure and congenital anomalies is unclear. We aimed to examine the association between exposure to cadmium, lead, mercury, selenium, and manganese and physical abnormalities. METHODS: Data from 89,887 pregnant women with singleton pregnancies who participated in the Japan Environment and Children's Study (JECS) were used. The correlation between maternal blood metal concentrations and physical abnormalities during the second or third trimester was investigated using logistic regression models. Physical anomalies included those observed at birth or at 1 month, primarily from ICD-10 Chapter 17, particularly congenital anomalies associated with environmental factors (e.g., hypospadias, cryptorchidism, cleft lip and palate, digestive tract atresia, congenital heart disease, and chromosomal abnormalities) and minor abnormalities. RESULTS: After adjusting for covariates, the OR (95% CIs) of physical abnormalities for a one-unit rise in Mn concentrations in all individuals were 1.26 (1.08, 1.48). The OR (95% CIs) of physical abnormalities in the 4th quartile (≥18.7 ng/g) were 1.06 (1.01, 1.13) (p-value for the trend = 0.034) compared with those in the 1st quartile (≤12.5 ng/g). CONCLUSION: In Japan, maternal blood Mn concentrations above threshold during pregnancy may slightly increase the incidence of physical abnormalities. IMPACT: Physical abnormalities (including minor anomalies and congenital anomalies) are associated with prenatal manganese concentrations. They are not associated with cadmium, lead, mercury, and selenium concentrations.

5.
Sensors (Basel) ; 23(21)2023 Nov 05.
Artigo em Inglês | MEDLINE | ID: mdl-37960684

RESUMO

We developed a shoe sole sensor system with four high-capacity, compact triaxial force sensors using a nitrogen added chromium strain-sensitive thin film mounted on the sole of a shoe. Walking experiments were performed, including straight walking and turning (side-step and cross-step turning), in six healthy young male participants and two healthy young female participants wearing the sole sensor system. A regression model to predict three-directional ground reaction forces (GRFs) from force sensor outputs was created using multiple linear regression and Gaussian process regression (GPR). The predicted GRF values were compared with the GRF values measured with a force plate. In the model trained on data from the straight walking and turning trials, the percent root-mean-square error (%RMSE) for predicting the GRFs in the anteroposterior and vertical directions was less than 15%, except for the GRF in the mediolateral direction. The model trained separately for straight walking, side-step turning, and cross-step turning showed a %RMSE of less than 15% in all directions in the GPR model, which is considered accurate for practical use.


Assuntos
Marcha , Sapatos , Humanos , Masculino , Feminino , Fenômenos Biomecânicos , Caminhada , Aprendizado de Máquina
6.
Tohoku J Exp Med ; 258(4): 303-307, 2022 Nov 11.
Artigo em Inglês | MEDLINE | ID: mdl-36261355

RESUMO

Community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) infections have increased worldwide in people without underlying diseases. CA-MRSA can often cause serious bacterial infections, especially skin and soft tissue infections (SSTI). Here, we describe a case of severe subcutaneous abscess due to Panton-Valentine leucocidin (PVL)-positive CA-MRSA in an infant without underlying diseases. A 4-month-old girl presented with a 4-day history of fever, with extensive redness and swelling of the lumbar region and buttocks. She was diagnosed with extensive subcutaneous abscess of the lumbar region and buttocks. Surgical drainage was performed, and a substantial volume of pus was drained. MRSA was detected in the pus on culture. Antibiotic therapy that covered MRSA was also administered for 3 weeks, and the abscess healed. As it was a severe SSTI due to MRSA, analysis of MRSA revealed PVL-positive MRSA. This patient had no underlying disease or history of antibiotic administration, and as MRSA was present in the nasopharyngeal cavity, it was considered a case of CA-MRSA. Furthermore, the prevalence of PVL-positive CA-MRSA in MRSA isolated from patients with SSTI has also increased in Japan. The Infectious Diseases Society of America recommends surgical intervention and empirical antibiotic therapy for MRSA-complicated SSTI cases in an era of CA-MRSA. Pediatricians must strongly consider the possibility of MRSA in children with severe SSTIs.


Assuntos
Infecções Comunitárias Adquiridas , Staphylococcus aureus Resistente à Meticilina , Infecções dos Tecidos Moles , Infecções Estafilocócicas , Criança , Lactente , Feminino , Humanos , Leucocidinas , Abscesso , Infecções Estafilocócicas/tratamento farmacológico , Infecções Estafilocócicas/epidemiologia , Infecções Estafilocócicas/microbiologia , Infecções dos Tecidos Moles/epidemiologia , Infecções dos Tecidos Moles/microbiologia , Antibacterianos/uso terapêutico
7.
Biochem Biophys Res Commun ; 577: 64-70, 2021 11 05.
Artigo em Inglês | MEDLINE | ID: mdl-34507067

RESUMO

To detect a small amount of Period1 (Per1) expression, we developed a micro-photomultiplier tube (µPMT) system which can be used both in vivo and in vitro. Using this system, we succeeded in detecting Per1 gene expression in the skin of freely moving mice over 240 times higher compared with that of the tissue contact optical sensor (TCS) as previously reported. For in vitro studies, we succeeded in detecting elevated Per1 expression by streptozotocin (STZ) treatment in the scalp hairs at an early stage of diabetes, when glucose content in the blood was still normal. In addition, we could detect elevated Per1 expression in a single whisker hair at the time of diabetes onset. These results show that our µPMT system responds to minute changes in gene expression in freely moving mice in vivo and in mice hair follicles in vitro. Furthermore, Per1 in the hair can be used for a marker of diabetic aggravation.


Assuntos
Expressão Gênica , Luciferases/genética , Medições Luminescentes/métodos , Proteínas Circadianas Period/genética , Animais , Diabetes Mellitus Experimental/genética , Diabetes Mellitus Experimental/metabolismo , Cabelo/metabolismo , Luciferases/metabolismo , Medições Luminescentes/instrumentação , Camundongos Endogâmicos C57BL , Camundongos Transgênicos , Atividade Motora/fisiologia , Movimento/fisiologia , Proteínas Circadianas Period/metabolismo , Reprodutibilidade dos Testes , Couro Cabeludo/metabolismo , Pele/citologia , Pele/metabolismo , Vibrissas/metabolismo
8.
Histochem Cell Biol ; 156(3): 239-251, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34129097

RESUMO

Estrogen-related receptor (ERR), a member of the nuclear receptor superfamily, consists of three subtypes (α, ß, γ) and has strong homology with estrogen receptor. No endogenous ligands have been identified for ERRs, but they play key roles in metabolic, hormonal, and developmental processes as transcription factors without ligand binding. Although subnuclear dynamics are essential for nuclear events including nuclear receptor-mediated transcriptional regulation, the dynamics of ERRs are poorly understood. Here, we report that ERRs show subcellular kinetic changes in response to diethylstilbestrol (DES), a synthetic estrogen that represses the transactivity of all three ERR subtypes, using live-cell imaging with fluorescent protein labeling. Upon DES treatment, all ERR subtypes formed discrete clusters in the nucleus, with ERRγ also displaying nuclear export. Fluorescence recovery after photobleaching analyses revealed significant reductions in the intranuclear mobility of DES-bound ERRα and ERRß, and a slight reduction in the intranuclear mobility of DES-bound ERRγ. After DES treatment, colocalization of all ERR subtypes with scaffold attachment factor B1 (SAFB1), a nuclear matrix-associated protein, was observed in dot-like subnuclear clusters, suggesting interactions of the ERRs with the nuclear matrix. Consistently, co-immunoprecipitation analyses confirmed enhanced interactions between ERRs and SAFB1 in the presence of DES. SAFB1 was clarified to repress the transactivity of all ERR subtypes through the ERR-response element. These results demonstrate ligand-dependent cluster formation of ERRs in the nucleus that is closely associated with SAFB1-mediated transrepression. Taken together, the present findings provide a new understanding of the pathophysiology regulated by ERR/SAFB1 signaling pathways and their subcellular dynamics.


Assuntos
Proteínas de Ligação à Região de Interação com a Matriz/metabolismo , Proteínas Associadas à Matriz Nuclear/metabolismo , Receptores de Estrogênio/metabolismo , Animais , Núcleo Celular/metabolismo , Células Cultivadas , Chlorocebus aethiops , Humanos , Proteínas de Ligação à Região de Interação com a Matriz/análise , Proteínas Associadas à Matriz Nuclear/análise , Receptores de Estrogênio/análise , Transdução de Sinais , Ativação Transcricional
9.
Ann Surg Oncol ; 28(13): 8497-8505, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33778906

RESUMO

BACKGROUND: The clinical utility of plasma cell-free DNA in precision cancer medicine has not been established. A pilot study was conducted to investigate the clinical utility of comprehensive genomic profiling by liquid biopsy in a Japanese population. METHODS: In this PROFILE study, 102 patients with advanced solid tumors who showed progression with standard systemic therapy underwent liquid biopsy between August 2017 and February 2020. Liquid biopsy was performed using Guardant360. RESULTS: Of the 102 patients, 56 were women, and the median age was 65 years. Regarding the types of cancer, 31 were hepatobiliary and pancreatic cancer, 17 were gastrointestinal cancer, and 13 were breast cancer. Frequently altered genes were TP53 (53.9%, 46/102), KRAS (25.5%, 26/102), PIK3CA (19.6%, 20/102), and EGFR (17.6%, 18/102). At least one genetic aberration was detected in 92 patients (90.2%). Actionable mutation was discovered in 88 patients (86.3%), and 67 patients (65.7%) were clinical trial candidates. Of the 102 patients, 22 (21.6%) were able to receive biomarker-matched therapy. Their best responses were as follows: 1 complete response, 3 partial responses, 7 stable diseases, and 11 progressive diseases. Additionally, the treated patients were divided on the basis of matching scores (≥ 50% vs. < 50%). The patients were divided into high and low groups. The high group had a higher disease control rate (DCR) of 75% compared with 20% in the low group (P = 0.010). CONCLUSIONS: The results indicate that liquid biopsy is useful for identifying actionable mutations associated with the clinical response of selected patients.


Assuntos
Ácidos Nucleicos Livres , Neoplasias , Idoso , Biomarcadores Tumorais/genética , Ácidos Nucleicos Livres/genética , Feminino , Genômica , Sequenciamento de Nucleotídeos em Larga Escala , Humanos , Japão , Masculino , Mutação , Neoplasias/genética , Projetos Piloto
10.
Pediatr Transplant ; 25(5): e13971, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-33470490

RESUMO

BACKGROUND: ILNEB constitute an autosomal recessive disorder caused by homozygous or compound heterozygous mutation of the gene for the ITGA3. To date, 8 ILNEB patients have been reported, but all 6 neonatal-onset ILNEB patients suffered early death within 2 years. The most common cause of death among previously reported ILNEB patients was exacerbation of the respiratory condition. METHODS: In this study, we describe a case of ILNEB with neonatal onset in a female patient and the genetic and histopathological testing performed. RESULTS: Our patient had a compound heterozygous mutation in ITGA3. Compared to previously reported patients, this patient exhibited milder clinical and histopathological characteristics. After experiencing a life-threatening respiratory infection at 8 months old, the patient started periodic subcutaneous immunoglobulin treatment once every 1-2 weeks for nephrotic-range proteinuria-induced secondary hypogammaglobulinemia. At the age of 3 years, proteinuria gradually increased with severe edema despite strict internal management. Therefore, our patient underwent unilateral nephrectomy and insertion of a peritoneal dialysis catheter followed by another unilateral nephrectomy. One month later, she underwent an ABO-compatible living-donor kidney transplantation at the age of 4 years. CONCLUSIONS: Our patient is a neonatal-onset ILNEB patient who survived for more than 2 years and underwent successful kidney transplantation.


Assuntos
Epidermólise Bolhosa Juncional/cirurgia , Transplante de Rim , Doenças Pulmonares Intersticiais/cirurgia , Síndrome Nefrótica/cirurgia , Epidermólise Bolhosa Juncional/genética , Feminino , Marcadores Genéticos , Humanos , Recém-Nascido , Integrina alfa3/genética , Doenças Pulmonares Intersticiais/congênito , Doenças Pulmonares Intersticiais/genética , Mutação , Nefrectomia , Síndrome Nefrótica/congênito , Síndrome Nefrótica/genética , Síndrome
11.
Environ Health Prev Med ; 26(1): 59, 2021 May 22.
Artigo em Inglês | MEDLINE | ID: mdl-34022817

RESUMO

BACKGROUND: The Hokkaido Study on Environment and Children's Health is an ongoing study consisting of two birth cohorts of different population sizes: the Sapporo cohort and the Hokkaido cohort. Our primary objectives are to (1) examine the effects that low-level environmental chemical exposures have on birth outcomes, including birth defects and growth retardation; (2) follow the development of allergies, infectious diseases, and neurobehavioral developmental disorders, as well as perform a longitudinal observation of child development; (3) identify high-risk groups based on genetic susceptibility to environmental chemicals; and (4) identify the additive effects of various chemicals, including tobacco. METHODS: The purpose of this report is to provide an update on the progress of the Hokkaido Study, summarize recent results, and suggest future directions. In particular, this report provides the latest details from questionnaire surveys, face-to-face examinations, and a collection of biological specimens from children and measurements of their chemical exposures. RESULTS: The latest findings indicate different risk factors of parental characteristics on birth outcomes and the mediating effect between socioeconomic status and children that are small for the gestational age. Maternal serum folate was not associated with birth defects. Prenatal chemical exposure and smoking were associated with birth size and growth, as well as cord blood biomarkers, such as adiponectin, leptin, thyroid, and reproductive hormones. We also found significant associations between the chemical levels and neuro development, asthma, and allergies. CONCLUSIONS: Chemical exposure to children can occur both before and after birth. Longer follow-up for children is crucial in birth cohort studies to reinforce the Developmental Origins of Health and Disease hypothesis. In contrast, considering shifts in the exposure levels due to regulation is also essential, which may also change the association to health outcomes. This study found that individual susceptibility to adverse health effects depends on the genotype. Epigenome modification of DNA methylation was also discovered, indicating the necessity of examining molecular biology perspectives. International collaborations can add a new dimension to the current knowledge and provide novel discoveries in the future.


Assuntos
Saúde da Criança , Poluentes Ambientais/efeitos adversos , Hipersensibilidade/epidemiologia , Transtornos do Neurodesenvolvimento/epidemiologia , Efeitos Tardios da Exposição Pré-Natal/epidemiologia , Fumar/efeitos adversos , Biomarcadores/sangue , Criança , Pré-Escolar , Estudos de Coortes , Exposição Ambiental/efeitos adversos , Saúde Ambiental , Feminino , Sangue Fetal/química , Seguimentos , Crescimento/efeitos dos fármacos , Humanos , Hipersensibilidade/etiologia , Lactente , Japão/epidemiologia , Masculino , Transtornos do Neurodesenvolvimento/etiologia , Gravidez , Efeitos Tardios da Exposição Pré-Natal/etiologia , Prevalência
12.
Br J Cancer ; 122(12): 1747-1753, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32238920

RESUMO

BACKGROUND: The effectiveness of a therapeutic strategy that switches chemotherapy, based on Ki-67 tumour expression after initial therapy, relative to that of standard chemotherapy, has not been evaluated. METHODS: Patients were randomly assigned to the control arm or the Ki-67 response-guided arm (Ki-67 arm). Primary tumour biopsies were obtained before treatment, and after three once-weekly doses of paclitaxel and trastuzumab to assess the interim Ki-67 index. In the control arm, paclitaxel and trastuzumab were continued for a total of 12 doses, regardless of the interim Ki-67 index. In the Ki-67 arm, subsequent treatment was based on the interim Ki-67 index. Ki-67 early responder is defined as the absolute Ki-67 value that was <10%, and the percentage of Ki-67-positive tumour cells was reduced by >30% compared with before treatment. Early Ki-67 responders continued to receive the same treatment, while early Ki-67 non-responders were switched to epirubicin plus cyclophosphamide. The primary endpoint was the pathological complete response (pCR) rate. RESULTS: A total of 237 patients were randomised. There was almost linear correlation between the Ki-67 reduction rate at interim assessment and the pCR rate. The pCR rate in Ki-67 early non-responders in the Ki-67 arm was inferior to that in the control arm (44.1%; 31.4-56.7; P = 0.025). CONCLUSIONS: The standard chemotherapy protocol remains as the recommended strategy for patients with HER2-positive breast cancer. CLINICAL TRIAL REGISTRATION: Clinical Trial Registration: UMIN-CTR as UMIN000007074.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Quimioterapia Adjuvante/métodos , Antígeno Ki-67/biossíntese , Adulto , Idoso , Biomarcadores Tumorais/análise , Biomarcadores Tumorais/metabolismo , Ciclofosfamida/administração & dosagem , Epirubicina/administração & dosagem , Feminino , Humanos , Antígeno Ki-67/análise , Pessoa de Meia-Idade , Terapia Neoadjuvante/métodos , Paclitaxel/administração & dosagem , Receptor ErbB-2/biossíntese , Trastuzumab/administração & dosagem
13.
Biochem Biophys Res Commun ; 524(2): 497-501, 2020 04 02.
Artigo em Inglês | MEDLINE | ID: mdl-32008747

RESUMO

Circadian rhythms are a fundamental biological phenomena that control various physiological functions. The suprachiasmatic nucleus (SCN) is a master clock that integrates various peripheral clocks. Recently, the choroid plexus (CP) was reported to be one such peripheral clock, a circadian oscillator that might conversely affect the SCN. Hence, the principle aim of our study was to unravel the circadian oscillator within the CP. Quantitative PCR against rPer1, rPer2, and rBmal1 showed that CP in the lateral ventricle (CP-LV) and fourth ventricle (CP-4V) has a robust circadian oscillator. The phases of the CP oscillator are between those of the pineal gland (PG) and SCN. Bioluminescence monitoring of explants showed that the intrinsic circadian period of CP-LV and CP-4V was approximately 21 h, which is shorter than SCN and PG. It is possible that interaction between oscillators of the CP-LV, CP-4V, PG, and SCN ensures the SCN adopts a stable 24 h rhythm, with each of the regions having an intrinsic oscillator with different phases and periods. In situ hybridization analysis revealed that dusk-to-dawn variation of rPer2 expression was found in epithelial cells of the CP only. Furthermore, the CP circadian oscillator might control cerebrospinal fluid secretion. However, no dusk-to-dawn variation in expression of the water channel, aquaporin 1, was observed. Further investigations are needed to clarify the involvement of circadian rhythm on CP.


Assuntos
Plexo Corióideo/fisiologia , Ritmo Circadiano , Animais , Aquaporina 1/análise , Aquaporina 1/genética , Proteínas CLOCK/análise , Proteínas CLOCK/genética , Plexo Corióideo/ultraestrutura , Regulação da Expressão Gênica , Masculino , Proteínas Circadianas Period/análise , Proteínas Circadianas Period/genética , Ratos , Ratos Transgênicos , Ratos Wistar
14.
J Orthop Sci ; 25(3): 410-415, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-31153740

RESUMO

BACKGROUND: Various arthroscopic tenodesis techniques for the treatment of long head of the biceps tendon pathologic abnormalities have been described. PURPOSE: This study evaluated the clinical outcomes of using a bioabsorbable interference screw and soft anchor for long head of the biceps tendon arthroscopic tenodesis. METHODS: Sixty patients treated by this technique between February 2013 and March 2015 were followed up for at least 2 years. In our operative technique, after the bone hole was made just proximal to the pectoralis major, the soft anchor was inserted at the bottom of the hole. After tenotomy of the long head of the biceps tendon proximal to the bone hole, the tendon was fixed into the bottom of the hole temporarily using the soft anchor. Finally, the tendon was fixed in the hole with a bioabsorbable interference screw. RESULTS: The UCLA score 15.1 points preoperatively and 32.4 points at follow-up (p < 0.05). The Constant 55.8 points preoperatively and 93.9 points at follow-up (p < 0.01). After biceps tenodesis, no cosmetic deformities were found in 56 patients (93.3%), and four patients (6.7%) had a Popeye deformity. On postoperative magnetic resonance evaluation, the long head of the biceps tendon was located on the bicipital groove without deviation in 53 cases (88.3%), on the bicipital groove with a partial deviation in 6 cases (10.0%), and outside the bicipital groove with complete deviation (dislocated) in 1 case (1.7%). CONCLUSION: We found that arthroscopic biceps tenodesis using a soft anchor provided a reliable means for treating biceps pathology with no cosmetic deformities and with good clinical results.


Assuntos
Implantes Absorvíveis , Artroscopia , Parafusos Ósseos , Âncoras de Sutura , Tenodese/instrumentação , Tenodese/métodos , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
15.
J Orthop Sci ; 25(1): 96-103, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30857766

RESUMO

BACKGROUND: Massive rotator cuff tears have a high rate of re-injury because of severe fatty infiltration. Our data showed that injuries proximal to the suprascapular nerve may be one cause of massive rotator cuff tears. The purpose of this study was to evaluate, using a rat model, how brachial plexus injury associated with a massive rotator cuff tear influences healing of the rotator cuff repair. METHODS: Seventy Sprague-Dawley rats were divided into three groups: rotator cuff tear with BP injury (DT group) (n = 28), rotator cuff tear without brachial plexus injury (T group) (n = 28), and a sham-operated group (n = 14). In the DT group, the rotator cuff tear was made and repaired 4 weeks after brachial plexus ligation. The gross assessment (evaluated the wet weight), biomechanical testing (evaluated the yield stress and the Young's modulus) and histological analyses (using the Bonar scale) were performed at baseline in the sham group, and at 4 and 12 weeks postoperatively in the DT and T groups (n = 7/group/time). RESULTS: Mean wet weight and yield stress were significantly lower in the DT group than in the T group. Additionally, the mean Young's modulus was significantly higher in the DT group than in the T group. Histologically, greater tendon degeneration was observed around the musculotendinous junction in the DT group than in the T group. CONCLUSION: The gross, biomechanical and histological data show that the repaired rotator cuff tendon with brachial plexus injury in rats does not heal as well as a repaired tendon without an accompanying brachial plexus injury. This suggests that more proximal neuropathy is one risk factor for re-tear of a repaired rotator cuff tendon.


Assuntos
Plexo Braquial/lesões , Plexo Braquial/fisiopatologia , Lesões do Manguito Rotador/fisiopatologia , Cicatrização , Animais , Fenômenos Biomecânicos , Modelos Animais de Doenças , Ratos , Ratos Sprague-Dawley , Recidiva , Lesões do Manguito Rotador/cirurgia
17.
Biosci Biotechnol Biochem ; 83(6): 1102-1110, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-30774020

RESUMO

High temperature (HT) during the grain developing stage causes deleterious effects on rice quality resulting in mature grains with a chalky appearance. Phospholipase D (PLD) plays an important role in plants, including responses to environmental stresses. OsPLDα1, α3 and ß2-knockdown (KD) plants showed decreased production of chalky grains at HT. HT ripening increased H2O2 accumulated in the developing grains. However, the increase was canceled by the knockdown of OsPLDß2. Expression levels of OsCATA which is one of three rice catalase genes, in developing grains of OsPLDß2-KD plants at 10 DAF were increased compared with that in vector-controls in HT growth conditions. Overexpression of OsCATA markedly suppressed the production of chalky grains in HT growth conditions. These results suggested that OsPLDß2 functions as a negative regulator of the induction of OsCATA and is involved in the production of chalky grains in HT growth conditions.


Assuntos
Genes de Plantas , Temperatura Alta , Oryza/crescimento & desenvolvimento , Oryza/genética , Fosfolipase D/genética , Catalase/genética , Técnicas de Silenciamento de Genes , Oryza/metabolismo , Espécies Reativas de Oxigênio/metabolismo , Regulação para Cima
18.
J Reprod Dev ; 65(1): 67-72, 2019 Feb 08.
Artigo em Inglês | MEDLINE | ID: mdl-30487374

RESUMO

A major role of the corpus luteum (CL) is to produce progesterone (P4). The CL has immature vasculature shortly after ovulation, suggesting it exists under hypoxic conditions. To elucidate the mechanism involved in regulation of luteal cell function during CL development, we compared the effect of hypoxia on P4 production by cultured bovine early and mid luteal cells. Luteal cells obtained from early and mid CL were incubated under different O2 concentrations (20% and 3%) with or without hCG (1 U/ml) for 6 h and 24 h. After 6 h of culture in the presence of hCG, P4 production was not affected by hypoxia whereas decrease in its production by mid luteal cells was observed. After 24 h of culture, P4 production was significantly decreased by hypoxia in both stages of luteal cells regardless of the use of hCG. At 6 h of culture, hypoxia increased mRNA expression of hydroxyl-Δ-5-steroid dehydrogenase, 3ß- and steroid Δ-isomerase 1 (HSD3B1) in early luteal cells, and decreased mRNA expression of cytochrome P450 cholesterol side chain cleavage (CYP11A1) enzyme in mid luteal cells. At 24 h of culture, mRNA expressions of steroidogenic acute regulatory protein (STAR), CYP11A1, and HSD3B1 were not affected by hypoxia in both stages of luteal cells. The overall results suggest that early luteal cells maintain P4 production under hypoxic conditions, and hypoxia-induced HSD3B1 may support this P4 production in the bovine early CL.


Assuntos
Bovinos , Hipóxia Celular/fisiologia , Células Lúteas/metabolismo , Progesterona/biossíntese , Animais , Células Cultivadas , Enzima de Clivagem da Cadeia Lateral do Colesterol/genética , Corpo Lúteo/crescimento & desenvolvimento , Feminino , Fase Luteal , Complexos Multienzimáticos/genética , Fosfoproteínas/genética , Progesterona Redutase/genética , RNA Mensageiro/análise , Esteroide Isomerases/genética
19.
Plant Biotechnol J ; 16(1): 111-123, 2018 01.
Artigo em Inglês | MEDLINE | ID: mdl-28499068

RESUMO

Physicochemical properties of storage starch largely determine rice grain quality and food characteristics. Therefore, modification of starch property is effective to fine-tune cooked rice textures. To obtain new resources with modified starch property as breeding materials, we screened a mutant population of a japonica cultivar Nipponbare and found two independent mutant lines, altered gelatinization (age)1 and age2, with moderate changes in starch gelatinization property. A combination of conventional genetic analyses and the latest mapping method, MutMapPlus, revealed that both of these lines harbour novel independent mutant alleles of starch branching enzyme IIb (BEIIb) gene. In age1, amino acid substitution of Met-723 to Lys completely abolished BEIIb enzyme activity without significant reduction in its protein level. A transposon insertion in an intron of BEIIb gene reduced BEIIb protein level and activity in age2. Production of a series of the mutant lines by combining age alleles and indica-type starch synthase IIa allele established stepwise alteration of the physicochemical properties of starch including apparent amylose content, thermal property, digestibility by α-amylase and branched structures of amylopectin. Consistent with the alteration of starch properties, the results of a sensory evaluation test demonstrated that warm cooked rice of the mutants showed a variety of textures without marked reduction in overall palatability. These results suggest that a series of the mutant lines are capable of manipulation of cooked rice textures.


Assuntos
Enzima Ramificadora de 1,4-alfa-Glucana/genética , Enzima Ramificadora de 1,4-alfa-Glucana/metabolismo , Oryza/enzimologia , Oryza/genética , Alelos , Amilopectina/genética , Amilopectina/metabolismo , Oryza/metabolismo
20.
Jpn J Clin Oncol ; 48(4): 388-391, 2018 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-29506214

RESUMO

We previously reported a potential predictive value of HSD17B4 hypermethylation for pathological complete response after preoperative trastuzumab plus chemotherapy in HER2-positive breast cancer. We will prospectively evaluate the predictive performance of HSD17B4 hypermethylation in patients with HER2-positive/HR-negative breast cancer treated with sequential chemo-radiotherapy. The primary endpoint is the rate of pathological complete response, defined as the absence of invasive and intraductal tumor cells in the breast at surgery, in breast cancer with HSD17B4 hypermethylation. If the pCR rates are extremely high, the ultimate breast-conserving treatment excluding the need for surgery could be a future treatment option. A total of 200 patients will be enrolled. This trial is registered at the UMIN Clinical Trials Registry as UMIN000028065 and is financially supported by the Japan Agency for Medical Research and Development, AMED.


Assuntos
Neoplasias da Mama/genética , Neoplasias da Mama/patologia , Testes Genéticos , Hormônios/metabolismo , Cuidados Pré-Operatórios , Receptor ErbB-2/metabolismo , Adulto , Neoplasias da Mama/terapia , Metilação de DNA/genética , Feminino , Seguimentos , Humanos , Japão , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Indução de Remissão
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA