Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 376
Filtrar
Más filtros

País/Región como asunto
Intervalo de año de publicación
1.
Nat Immunol ; 24(1): 30-41, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-36443515

RESUMEN

Inflammasome complexes are pivotal in the innate immune response. The NLR family pyrin domain containing protein 3 (NLRP3) inflammasome is activated in response to a broad variety of cellular stressors. However, a primary and converging sensing mechanism by the NLRP3 receptor initiating inflammasome assembly remains ill defined. Here, we demonstrate that NLRP3 inflammasome activators primarily converge on disruption of endoplasmic reticulum-endosome membrane contact sites (EECS). This defect causes endosomal accumulation of phosphatidylinositol 4-phosphate (PI4P) and a consequent impairment of endosome-to-trans-Golgi network trafficking (ETT), necessary steps for endosomal recruitment of NLRP3 and subsequent inflammasome activation. Lowering endosomal PI4P levels prevents endosomal association of NLRP3 and inhibits inflammasome activation. Disruption of EECS or ETT is sufficient to enhance endosomal PI4P levels, to recruit NLRP3 to endosomes and to potentiate NLRP3 inflammasome activation. Mice with defects in ETT in the myeloid compartment are more susceptible to lipopolysaccharide-induced sepsis. Our study thus identifies a distinct cellular mechanism leading to endosomal NLRP3 recruitment and inflammasome activation.


Asunto(s)
Inflamasomas , Proteína con Dominio Pirina 3 de la Familia NLR , Ratones , Animales , Inflamasomas/metabolismo , Proteína con Dominio Pirina 3 de la Familia NLR/metabolismo , Inmunidad Innata , Proteínas Portadoras/metabolismo , Endosomas/metabolismo
2.
Cell ; 170(1): 114-126.e15, 2017 Jun 29.
Artículo en Inglés | MEDLINE | ID: mdl-28666113

RESUMEN

Rice feeds half the world's population, and rice blast is often a destructive disease that results in significant crop loss. Non-race-specific resistance has been more effective in controlling crop diseases than race-specific resistance because of its broad spectrum and durability. Through a genome-wide association study, we report the identification of a natural allele of a C2H2-type transcription factor in rice that confers non-race-specific resistance to blast. A survey of 3,000 sequenced rice genomes reveals that this allele exists in 10% of rice, suggesting that this favorable trait has been selected through breeding. This allele causes a single nucleotide change in the promoter of the bsr-d1 gene, which results in reduced expression of the gene through the binding of the repressive MYB transcription factor and, consequently, an inhibition of H2O2 degradation and enhanced disease resistance. Our discovery highlights this novel allele as a strategy for breeding durable resistance in rice.


Asunto(s)
Oryza/genética , Proteínas de Plantas/genética , Factores de Transcripción/genética , Secuencia de Bases , Cruzamiento , Resistencia a la Enfermedad , Técnicas de Inactivación de Genes , Genoma de Planta , Estudio de Asociación del Genoma Completo , Enfermedades de las Plantas , Regiones Promotoras Genéticas
3.
Support Care Cancer ; 32(6): 367, 2024 May 18.
Artículo en Inglés | MEDLINE | ID: mdl-38761270

RESUMEN

PURPOSE: To investigate the effect of gradient pressure therapy on the prevention of chemotherapy-induced peripheral neuropathy (CIPN) and improvement in activities of daily living (ADL) in patients with breast cancer. METHODS: Eighty female patients with breast cancer treated at Tangshan People's Hospital between October 2022 and July 2023 were selected as research participants and divided into control and intervention, with 40 patients in each group. The control group received routine treatment and care, whereas the intervention group received gradient pressure therapy based on routine treatment and care. Incidence of peripheral neuropathy and the degree of impact on ADL between the two groups were compared after the intervention for cycles 2, 4, and 6. RESULTS: There was no significant difference in the general information between the two groups (P > 0.05). After two intervention cycles, there was no significant difference in the incidence of CIPN, various dimensions of Chemotherapy-Induced Peripheral Neuropathy Assessment Tool (CIPNAT), and total scores between the two groups (P > 0.05). After four intervention cycles, the two groups had a statistically significant difference in the incidence of CIPN, sensory dimension, general activity dimension, and total CIPNAT score (P < 0.05). After six intervention cycles, there was a significant difference in the incidence of CIPN, sensory dimension, fine activity dimension, general activity dimension, and total CIPNAT score between the two groups (P < 0.05), while there was no significant difference in the other dimensions (P > 0.05). CONCLUSIONS: Gradient pressure therapy can effectively prevent or alleviate peripheral neuropathy in patients with breast cancer undergoing chemotherapy and improve their ability to perform ADL. Thus, it is safe, effective, and worthy of clinical application. TRIAL REGISTRATION: RMYY-LLKS-2022-054.


Asunto(s)
Actividades Cotidianas , Antineoplásicos , Neoplasias de la Mama , Enfermedades del Sistema Nervioso Periférico , Humanos , Femenino , Neoplasias de la Mama/tratamiento farmacológico , Enfermedades del Sistema Nervioso Periférico/inducido químicamente , Enfermedades del Sistema Nervioso Periférico/prevención & control , Persona de Mediana Edad , Antineoplásicos/efectos adversos , Adulto , Presión , Incidencia , Anciano
4.
Support Care Cancer ; 32(4): 260, 2024 Apr 02.
Artículo en Inglés | MEDLINE | ID: mdl-38561474

RESUMEN

PURPOSE: To explore the effects of compression therapy on chemotherapy-induced peripheral neuropathy (CIPN), anxiety, depression, and sleep disorders in breast cancer patients administered taxanes. METHODS: Eighty patients with breast cancer undergoing chemotherapy at Tangshan People's Hospital between October 2022 and July 2023 were randomly divided into control (n = 40) and intervention (n = 40) groups. The control group received routine care, while intervention group received compression therapy in addition to routine care (30 min before the infusion of chemotherapy drugs, patients wore surgical gloves on their hands that were one size smaller than the appropriate size and elastic socks on their feet until 30 min after the infusion). The incidence of CIPN, anxiety, depression, and sleep scores, were compared between these groups before and after compression therapy during chemotherapy cycles 2, 4, and 6. RESULTS: The general characteristics did not differ significantly between the groups (P > 0.05). The CIPN incidence, anxiety and depression scores, and sleep scores also did not differ significantly between the two groups before and after the intervention period (P > 0.05). After the fourth and sixth cycles of intervention, the incidence of CIPN (≥ 1 and ≥ 2), anxiety and depression scores, and sleep scores were significantly lower in the intervention group than in the control group (P < 0.05). CONCLUSION: Compression therapy can effectively reduce the incidence of CIPN, as well as improve the level of anxiety, depression, and sleep disorders in chemotherapy patients. Therefore, medical personnel should closely observe the physical and psychological changes in patients undergoing chemotherapy and provide corresponding preventive measures. REGISTRATION NUMBER: RMYY-LLKS-2022-054. DATE OF REGISTRATION: September 25, 2022.


Asunto(s)
Antineoplásicos , Neoplasias de la Mama , Hidrocarburos Aromáticos con Puentes , Enfermedades del Sistema Nervioso Periférico , Humanos , Femenino , Neoplasias de la Mama/tratamiento farmacológico , Incidencia , Enfermedades del Sistema Nervioso Periférico/inducido químicamente , Enfermedades del Sistema Nervioso Periférico/epidemiología , Enfermedades del Sistema Nervioso Periférico/tratamiento farmacológico , Taxoides , Ansiedad/epidemiología , Antineoplásicos/efectos adversos
5.
Kidney Int ; 104(5): 956-974, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-37673285

RESUMEN

After acute kidney injury (AKI), renal tubular epithelial cells (RTECs) are pathologically characterized by intracellular lipid droplet (LD) accumulation, which are involved in RTEC injury and kidney fibrosis. However, its pathogenesis remains incompletely understood. The protein, αKlotho, primarily expressed in RTECs, is well known as an anti-aging hormone wielding versatile functions, and its membrane form predominantly acts as a co-receptor for fibroblast growth factor 23. Here, we discovered a connection between membrane αKlotho and intracellular LDs in RTECs. Fluorescent fatty acid (FA) pulse-chase assays showed that membrane αKlotho deficiency in RTECs, as seen in αKlotho homozygous mutated (kl/kl) mice or in mice with ischemia-reperfusion injury (IRI)-induced AKI, inhibited FA mobilization from LDs by impairing adipose triglyceride lipase (ATGL)-mediated lipolysis and lipophagy. This resulted in LD accumulation and FA underutilization. IRI-induced alterations were more striking in αKlotho deficiency. Mechanistically, membrane αKlotho deficiency promoted E3 ligase peroxin2 binding to ubiquitin-conjugating enzyme E2 D2, resulting in ubiquitin-mediated degradation of ATGL which is a common molecular basis for lipolysis and lipophagy. Overexpression of αKlotho rescued FA mobilization by preventing ATGL ubiquitination, thereby lessening LD accumulation and fibrosis after AKI. This suggests that membrane αKlotho is indispensable for the maintenance of lipid homeostasis in RTECs. Thus, our study identified αKlotho as a critical regulator of lipid turnover and homeostasis in AKI, providing a viable strategy for preventing tubular injury and the AKI-to-chronic kidney disease transition.

6.
BMC Med ; 21(1): 226, 2023 06 26.
Artículo en Inglés | MEDLINE | ID: mdl-37365596

RESUMEN

BACKGROUND: Human epidermal growth factor receptor 2 (HER2) targeted therapy combined with endocrine therapy has been recommended as an alternative treatment strategy for patients with hormone receptor (HR)-positive, HER2-positive metastatic breast cancer (MBC). This study aimed to evaluate the role of pyrotinib, an oral pan-HER irreversible tyrosine kinase inhibitor, in combination with letrozole for patients with HR-positive, HER2-positive MBC. METHODS: In this multi-center, phase II trial, HR-positive and HER2-positive MBC patients who were not previously treated for metastasis disease were enrolled. Patients received daily oral pyrotinib 400 mg and letrozole 2.5 mg until disease progression, unacceptable toxicity, or withdrawal of consent. The primary endpoint was the clinical benefit rate (CBR) assessed by an investigator according to the Response Evaluation Criteria in Solid Tumors version 1.1. RESULTS: From November 2019 to December 2021, 53 patients were enrolled and received pyrotinib plus letrozole. As of August 2022, the median follow-up duration was 11.6 months (95% confidence interval [CI], 8.7-14.0 months). The CBR was 71.7% (95% CI, 57.7-83.2%), and the objective response rate was 64.2% (95% CI, 49.8-76.9%). The median progression-free survival was 13.7 months (95% CI, 10.7-18.7 months). The most common treatment-related adverse event of grade 3 or higher was diarrhea (18.9%). No treatment-related deaths were reported, and one patient experienced treatment discontinuation due to adverse event. CONCLUSIONS: Our preliminary results suggested that pyrotinib plus letrozole is feasible for the first-line treatment of patients with HR-positive and HER2-positive MBC, with manageable toxicities. TRIAL REGISTRATION: ClinicalTrials.gov, NCT04407988.


Asunto(s)
Neoplasias de la Mama , Femenino , Humanos , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Neoplasias de la Mama/patología , Letrozol/uso terapéutico , Receptor ErbB-2 , Resultado del Tratamiento
7.
Clin Exp Dermatol ; 47(7): 1369-1371, 2022 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-35315545

RESUMEN

We present an unusual case of unilateral and localized subcorneal pustular dermatosis, which has not been described previously.


Asunto(s)
Enfermedades Cutáneas Vesiculoampollosas , Humanos , Enfermedades Cutáneas Vesiculoampollosas/diagnóstico
8.
Psychol Health Med ; 27(8): 1739-1747, 2022 09.
Artículo en Inglés | MEDLINE | ID: mdl-34039130

RESUMEN

Township health centers play a cornerstone role in the primary healthcare in China while it's development is largely limited by the brain drain. Job satisfaction is closely related to brain drain, investigating the relevant factors of job satisfaction can provide strategies to reduce brain drain. This research was conducted in Huangpi, China. Convenience sampling methods and self-administereded questionnaires were used. We collected 1370 valid samples, with an effective rate of 97.72%. Descriptive statistics are used to describe sociodemographic information. The Pearson Chi-square statistical was used to test the binary association between job satisfaction and another categorical variable. All the sociodemographic information was applied to the binary logistic regression model using the stepwise selection method. The mean age was 36.98 (SD = 9.84), factors that affect job satisfaction include educational background (x2 = 7.99, p< 0.05), marital status (x2 = 8.96, p< 0.05, monthly income (x2 = 51.43, p< 0.01), hire form (x2 = 7.64, p< 0.05), hours worked per week (x2 = 33.48, p< 0.01), parent had a stable job (x2 = 10.65, p< 0.01). Government and management should consider the impact of current policies on job satisfaction. Increasing the welfare of healthcare staff and promoting equity are potential strategies for improving low levels of job satisfaction.


Asunto(s)
Satisfacción en el Trabajo , Población Rural , Adulto , Actitud del Personal de Salud , China , Estudios Transversales , Humanos , Encuestas y Cuestionarios
9.
Graefes Arch Clin Exp Ophthalmol ; 259(7): 1879-1887, 2021 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-33825028

RESUMEN

PURPOSE: Visual outcomes after cataract surgery in diabetic patients with retinal or visual pathway disease are difficult to predict as the fundus may be obscured, and assessment of visual potential is challenging. This study assessed the value of visual electrophysiology as a prognostic indicator of visual recovery in diabetic patients with cataract, prior to cataract surgery. METHODS: Forty-one diabetic patients (aged 52-80; 74 eyes) and 13 age-matched non-diabetic control patients (21 eyes) were examined prior to cataract surgery. Pre-surgical examinations included best-corrected visual acuity (BCVA), slit-lamp bio-microscopy, ISCEV-standard full-field electroretinography (ffERG), and flash visual evoked potential (flash VEP) testing. Electrophysiological assessments included quantification of the DA and LA ERG, oscillatory potentials (OPs; OP1, OP2, OP3, OP4) and flash VEP P1, P2, and P3 components. Post-operative BCVA was measured in all cases and the diabetic patients grouped according to the severity of visual acuity loss: mild (logMAR ≤ 0.1), moderate (0.1 < logMAR < 0.5), or severe (logMAR ≥ 0.5). A fourth group included those without diabetes. The pre-surgical electrophysiological data was compared between the four groups by analysis of variance. RESULTS: The severity of post-surgical visual acuity loss in the diabetic patients was classified as mild (N=22 eyes), moderate (N=31 eyes), or severe (N=21 eyes). In the group without diabetes, post-surgical visual impairment was classified as mild (N=21 eyes). The pre-operative DA 10.0 ERG a-wave amplitudes, DA 3.0 ERG OP2 amplitudes, and the LA 3.0 a- and b-wave amplitudes showed best significant differences among the four groups. The flash VEP did not show significant difference between groups. CONCLUSION: Electrophysiological assessment of diabetic patients with cataract can provide a useful measure of retinal function. Full-field ERG components, including the DA 10.0 ERG a-wave, DA 3.0 ERG OP2 component, and the LA 3.0 a- and b-wave amplitudes, are of prognostic value in predicting post-surgical visual acuity, and may inform the surgical management of cataract patients with diabetes.


Asunto(s)
Catarata , Diabetes Mellitus , Catarata/complicaciones , Catarata/diagnóstico , Electrofisiología , Electrorretinografía , Potenciales Evocados Visuales , Humanos , Pronóstico , Retina
10.
J Clin Pharm Ther ; 46(1): 149-157, 2021 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-33015848

RESUMEN

WHAT IS KNOWN AND OBJECTIVE: At present, studies on the usage of proton-pump inhibitors (PPIs) have universal significance. In clinical practice, PPIs are widely used to treat a variety of acid-related diseases, but they can be inappropriately prescribed, leading to increased medical costs and patient harm. The study comprehensively evaluated the clinical effects of a clinical pharmacist intervention on inappropriate PPI prescriptions in a tertiary general hospital hepatobiliary surgery ward. METHODS: A retrospective, single-centre intervention study covering the periods of July-December 2018 and July-December 2019 was conducted. In the intervention group, clinical pharmaceutical care was initiated by a clinical pharmacist in the hepatobiliary surgery ward. Outcomes, including the clinical pattern of PPI utilization, the rate of inappropriate PPI use and safety outcomes, were compared between the two periods. RESULTS AND DISCUSSION: In total, 1150 patients were admitted to the hepatobiliary surgery ward in our hospital in the study periods. Of these, 717 patients met the inclusion criteria for this study, and 420 and 297 patients were included in the preintervention and post-intervention groups, respectively. The PPI utilization rates before and after the intervention were 82.0% and 55.0%, respectively. The rates of inappropriate PPI use before and after the intervention were 48.9 and 22.7 per 100 patient-days, respectively. Clinical safety outcomes were nearly identical between before and after the intervention, but patients treated with PPIs were more likely to experience nosocomial pneumonia (2.4% vs. 0.6%). WHAT IS NEW AND CONCLUSION: The implementation of a clinical pharmacist intervention for PPI use decreased inappropriate PPI use during hospitalization without sacrificing clinical safety outcomes.


Asunto(s)
Prescripción Inadecuada/estadística & datos numéricos , Hepatopatías/cirugía , Evaluación de Resultado en la Atención de Salud , Servicio de Farmacia en Hospital/normas , Inhibidores de la Bomba de Protones/administración & dosificación , Anciano , China , Femenino , Departamentos de Hospitales , Humanos , Masculino , Estudios Retrospectivos
11.
Clin Infect Dis ; 71(16): 2218-2221, 2020 11 19.
Artículo en Inglés | MEDLINE | ID: mdl-32179890

RESUMEN

Coronavirus Disease 2019 (COVID-19), which originated in Wuhan, China, has caused many healthcare workers (HCWs) to be infected. Seventy-two HCWs manifested with acute respiratory illness were retrospectively enrolled to analyze the risk factors. The high-risk department, longer duty hours, and suboptimal hand hygiene after contacting with patients were linked to COVID-19.


Asunto(s)
COVID-19/epidemiología , Personal de Salud/estadística & datos numéricos , Hospitales/estadística & datos numéricos , Adulto , Anciano , COVID-19/transmisión , China/epidemiología , Femenino , Higiene de las Manos , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Riesgo , SARS-CoV-2 , Carga de Trabajo , Adulto Joven
12.
BMC Genomics ; 21(1): 435, 2020 Jun 26.
Artículo en Inglés | MEDLINE | ID: mdl-32586350

RESUMEN

BACKGROUND: Fatty liver is a high incidence of perinatal disease in dairy cows caused by negative energy balance, which seriously threatens the postpartum health and milk production. It has been reported that lysine acetylation plays an important role in substance and energy metabolism. Predictably, most metabolic processes in the liver, as a vital metabolic organ, are subjected to acetylation. Comparative acetylome study were used to quantify the hepatic tissues from the severe fatty liver group and normal group. Combined with bioinformatics analysis, this study provides new insights for the role of acetylation modification in fatty liver disease of dairy cows. RESULTS: We identified 1841 differential acetylation sites on 665 proteins. Among of them, 1072 sites on 393 proteins were quantified. Functional enrichment analysis shows that higher acetylated proteins are significantly enriched in energy metabolic pathways, while lower acetylated proteins are significantly enriched in pathways related to immune response, such as drug metabolism and cancer. Among significantly acetylated proteins, many mitochondrial proteins were identified to be interacting with multiple proteins and involving in lipid metabolism. Furthermore, this study identified potential important proteins, such as HADHA, ACAT1, and EHHADH, which may be important regulatory factors through modification of acetylation in the development of fatty liver disease in dairy cows and possible therapeutic targets for NAFLD in human beings. CONCLUSION: This study provided a comprehensive acetylome profile of fatty liver of dairy cows, and revealed important biological pathways associated with protein acetylation occurred in mitochondria, which were involved in the regulation of the pathogenesis of fatty liver disease. Furthermore, potential important proteins, such as HADHA, ACAT1, EHHADH, were predicted to be essential regulators during the pathogenesis of fatty liver disease. The work would contribute to the understanding the pathogenesis of NAFLD, and inspire in the development of new therapeutic strategies for NAFLD.


Asunto(s)
Enfermedades de los Bovinos/metabolismo , Hígado Graso/veterinaria , Mitocondrias Hepáticas/metabolismo , Proteínas Mitocondriales/metabolismo , Proteómica/métodos , Acetilación , Animales , Estudios de Casos y Controles , Bovinos , Cromatografía Liquida , Biología Computacional , Metabolismo Energético , Hígado Graso/metabolismo , Femenino , Metabolismo de los Lípidos , Mapas de Interacción de Proteínas , Espectrometría de Masas en Tándem
13.
New Phytol ; 226(6): 1850-1863, 2020 06.
Artículo en Inglés | MEDLINE | ID: mdl-32112568

RESUMEN

Broad-spectrum resistance is highly preferred in crop breeding programmes. Previously, we have reported the identification of the broad-spectrum resistance-Digu 1 (bsr-d1) allele from rice Digu. The bsr-d1 allele prevents activation of Bsr-d1 expression by Magnaporthe oryzae infection and degradation of H2 O2 by peroxidases, leading to resistance to M. oryzae. However, it remains unknown whether defence pathways other than H2 O2 burst and peroxidases contribute to the bsr-d1-mediated immunity. Blast resistance was determined in rice leaves by spray and punch inoculations. Target genes of OsMYB30 were identified by one-hybrid assays in yeast and electrophoretic mobility shift assay. Lignin content was measured by phloroglucinol-HCl staining, and acetyl bromide and thioacidolysis methods. Here, we report the involvement of the OsMYB30 gene in bsr-d1-mediated blast resistance. Expression of OsMYB30 was induced during M. oryzae infection or when Bsr-d1 was knocked out or downregulated, as occurs in bsr-d1 plants upon infection. We further found that OsMYB30 bound to and activated the promoters of 4-coumarate:coenzyme A ligase genes (Os4CL3 and Os4CL5) resulting in accumulation of lignin subunits G and S. This action led to obvious thickening of sclerenchyma cells near the epidermis, inhibiting M. oryzae penetration at the early stage of infection. Our study revealed novel components required for bsr-d1-mediated resistance and penetration-dependent immunity, and advanced our understanding of broad-spectrum disease resistance.


Asunto(s)
Magnaporthe , Oryza , Ascomicetos , Resistencia a la Enfermedad/genética , Oryza/genética , Fitomejoramiento , Enfermedades de las Plantas , Hojas de la Planta
14.
BMC Ophthalmol ; 20(1): 168, 2020 Apr 28.
Artículo en Inglés | MEDLINE | ID: mdl-32345252

RESUMEN

BACKGROUND: To report a case of a young patient with neurofibromatosis type 1 (NF1). METHODS: Here we review the treatment administered to a 7-year-old NF1 patient with neovascular glaucoma as the primary diagnosis. CASE PRESENTATION: A 7-year-old boy developed visual loss in the right eye associated with periocular pain and ipsilateral headache that had persisted for 1 week. The patient's condition did not improve after treatment with topical or systemic glaucoma medications. Fundus examination of the right eye showed superotemporal retinal vasoproliferative tumors (RVPT). Near-infrared reflectance scans of the left eye's fundus revealed bright patchy regions, scattered across the posterior pole; systemic examination showed café-au-lait spots all over the patient's body. The patient had a clear family history. Genetic testing confirmed NF1. The right eye was treated with intravitreal ranibizumab injection, retinal lesion cryotherapy, and transscleral ciliary body photocoagulation. After treatment, RVPT scarring was observed. The patient's intraocular pressure remained within normal limits. CONCLUSIONS: We report a rare case of neurofibromatosis in a pediatric patient with neovascular glaucoma accompanied by RVPT. We suggest that evaluations of young patients with neovascular glaucoma should include careful attention to the overall condition of the patient and his/her parents, as well as family history. If necessary, NF1 molecular testing should be performed to avoid a missed diagnosis or misdiagnosis.


Asunto(s)
Glaucoma Neovascular/etiología , Neurofibromatosis 1/complicaciones , Neoplasias de la Retina/complicaciones , Neovascularización Retiniana/complicaciones , Inhibidores de la Angiogénesis/uso terapéutico , Niño , Cuerpo Ciliar/cirugía , Angiografía con Fluoresceína , Glaucoma Neovascular/diagnóstico , Glaucoma Neovascular/cirugía , Humanos , Inyecciones Intravítreas , Coagulación con Láser , Masculino , Neurofibromatosis 1/diagnóstico , Neurofibromatosis 1/tratamiento farmacológico , Linaje , Ranibizumab/uso terapéutico , Neoplasias de la Retina/diagnóstico , Neoplasias de la Retina/tratamiento farmacológico , Neovascularización Retiniana/diagnóstico , Neovascularización Retiniana/tratamiento farmacológico , Factor A de Crecimiento Endotelial Vascular/antagonistas & inhibidores
15.
Molecules ; 25(1)2020 Jan 02.
Artículo en Inglés | MEDLINE | ID: mdl-31906449

RESUMEN

It has been demonstrated that skeletal muscle adaptions, including muscle fibers transition, angiogenesis, and mitochondrial biogenesis are involved in the regular exercise-induced improvement of endurance capacity and metabolic status. Herein, we investigated the effects of pterostilbene (PST) supplementation on skeletal muscle adaptations to exercise training in rats. Six-week-old male Sprague Dawley rats were randomly divided into a sedentary control group (Sed), an exercise training group (Ex), and exercise training combined with 50 mg/kg PST (Ex + PST) treatment group. After 4 weeks of intervention, an exhaustive running test was performed, and muscle fiber type transformation, angiogenesis, and mitochondrial content in the soleus muscle were measured. Additionally, the effects of PST on muscle fiber transformation, paracrine regulation of angiogenesis, and mitochondrial function were tested in vitro using C2C12 myotubes. In vivo study showed that exercise training resulted in significant increases in time-to-exhaustion, the proportion of slow-twitch fibers, muscular angiogenesis, and mitochondrial biogenesis in rats, and these effects induced by exercise training could be augmented by PST supplementation. Moreover, the in vitro study showed that PST treatment remarkably promoted slow-twitch fibers formation, angiogenic factor expression, and mitochondrial function in C2C12 myotubes. Collectively, our results suggest that PST promotes skeletal muscle adaptations to exercise training thereby enhancing the endurance capacity.


Asunto(s)
Fibras Musculares Esqueléticas/efectos de los fármacos , Fibras Musculares Esqueléticas/metabolismo , Fibras Musculares de Contracción Lenta/efectos de los fármacos , Músculo Esquelético/efectos de los fármacos , Músculo Esquelético/metabolismo , Neovascularización Fisiológica/efectos de los fármacos , Condicionamiento Físico Animal/fisiología , Estilbenos/uso terapéutico , Animales , Masculino , Fibras Musculares de Contracción Lenta/metabolismo , Ratas , Ratas Sprague-Dawley
16.
BMC Cancer ; 19(1): 1219, 2019 Dec 16.
Artículo en Inglés | MEDLINE | ID: mdl-31842811

RESUMEN

BACKGROUND: The posterior-inferior border of symphysis (PIBS) point system is a novel vaginal dose-reporting method and is a simple and reliable method proposed by the Medical University of Vienna proposed for both external-beam radiotherapy (EBRT) and brachytherapy (BT). In this multicenter study, we sought to first evaluate the vaginal radiation dose in Chinese cervical cancer patients according to the PIBS point system and then to analyze the factors influencing the dose distribution. METHODS: We collected data from the medical records of 936 cervical cancer patients who underwent concurrent radiochemotherapy at 13 different institutions in China. Radiation doses at points A, PIBS+ 2 cm, PIBS and PIBS-2 cm, International Commission on Radiation Units (ICRU)-R and ICRU-B were measured. RESULTS: The median total doses in EQD2α/ß = 3 at points PIBS+ 2 cm, PIBS and PIBS-2 cm were 82.5 (52.7-392.1) Gy, 56.2 (51.4-82.1) Gy and 2.6 (0.9-7.4) Gy, respectively. The median total doses in EQD2α/ß = 3 at ICRU-R and ICRU-B were 77.5 (54.8-132.4) Gy and 79.9 (60.7-133.7) Gy, respectively. The mean vaginal reference length (VRL) was 4.6 ± 1.0 cm (median, 4.5 cm). In patients with VRL ≤4.5 cm, the mean total doses in EQD2α/ß = 3 at points PIBS+ 2 cm, PIBS and PIBS-2 cm were 128.5, 60.7 and 0.8 Gy, respectively. In patients with VRL > 4.5 cm, the mean total doses at these three points were 68.9, 0.5 and 54.5 Gy, respectively. Classification of patients revealed significant differences (P < 0.05) between these two groups. CONCLUSIONS: With the PIBS point system, Chinese patients with a shorter VRL of < 4.5 cm received higher radiation doses at the PIBS+ 2 cm, PIBS and PIBS-2 cm points than European and American patients. Further studies are required to establish the dose-effect relationships with these points as references. The study was registered as a clinical trial (NCT03257475) on August 22, 2017.


Asunto(s)
Braquiterapia , Quimioradioterapia , Neoplasias del Cuello Uterino/terapia , Adenocarcinoma/terapia , Adulto , Pueblo Asiatico , Carcinoma de Células Escamosas/terapia , China , Femenino , Humanos , Persona de Mediana Edad , Dosificación Radioterapéutica
17.
BMC Endocr Disord ; 19(1): 12, 2019 Jan 22.
Artículo en Inglés | MEDLINE | ID: mdl-30670019

RESUMEN

BACKGROUND: Zinc-α2-glycoprotein (ZAG) is a recently novel lipolytic adipokine implicated in regulation of glucose and lipid metabolism in many metabolic disorders. In vitro and animal studies suggest that thyroid hormones (TH) up-regulates ZAG production in hepatocytes. However, there is no data evaluating the possible relationship between ZAG and TH in a human model of hyperthyroidism. The objective of the present study is to assess the association of serum ZAG levels with TH and lipid profile in patients with hyperthyroidism before and after methimazole treatment. METHODS: A total of 120 newly diagnosed overt hyperthyroidism and 122 healthy control subjects were recruited. Of them, 39 hyperthyroidism patients were assigned to receive methimazole treatment as follow-up study for 2 months. RESULTS: The clinical consequence showed that serum ZAG levels were elevated in patients with hyperthyroidism (P < 0.01). Adjust for age, gender and BMI, serum ZAG levels were positively related with serum free T3 (FT3), free T4 (FT4) levels and negatively correlated with serum total cholesterol (TC), low density lipoprotein cholesterol (LDLC) levels in hyperthyroidism subjects (all P < 0.01). After methimazole treatment, serum ZAG levels were decreased and the decline was associated with decreased FT3, FT4 and increased TC levels (all P < 0.001). CONCLUSION: We conclude that ZAG may be involved in the pathogenesis of lipid metabolism disorder in patients with hyperthyroidism. TRIAL REGISTRATION: ChiCTR-ROC-17012943 . Registered 11 October 2017, retrospectively registered.


Asunto(s)
Biomarcadores/sangre , Hipertiroidismo/sangre , Metimazol/uso terapéutico , Proteínas de Plasma Seminal/sangre , Hormonas Tiroideas/sangre , Adulto , Antitiroideos/uso terapéutico , Femenino , Estudios de Seguimiento , Humanos , Hipertiroidismo/diagnóstico , Hipertiroidismo/tratamiento farmacológico , Masculino , Pronóstico , Estudios Prospectivos , Zn-alfa-2-Glicoproteína
18.
BMC Public Health ; 19(1): 1526, 2019 Nov 14.
Artículo en Inglés | MEDLINE | ID: mdl-31727027

RESUMEN

BACKGROUND: Global countries are suffering from a shortage of health professionals. Turnover intention is closely related to job satisfaction and burnout, making good use of these relationships could alleviate the crisis. Our research aims to examine the mediating role of job satisfaction in the relationship between burnout and turnover intention. METHODS: This research was conducted in Huangpi, China. The convenience sampling method and self-administereded questionnaires were used. 1370 of valid samples were collected with 97.72% effective rate. Descriptive analyses were conducted to describe social demographic factors. The structural equation model (SEM) was performed to adjust model fitting, and the mediation effect test was carried out by using the bootstrap method. Sobel-Z test was used to verify the significance of mediation effect. RESULTS: The mean age was 36.98 (SD = 9.84). The fitting indices of hypothetical model are not good. After the adjustments, χ2/df = 5.590, GFI = 0.932, AGFI = 0.901, CFI = 0.977, NFI = 0.973, IFI = 0.977, TLI = 0.970, RESEA = 0.058. The revised model fitted well, and the SEM was put up by using the bootstrap method. The mediating effect is partial, and Soble-Z test indicates that the mediation effect is significant. Burnout is negatively correlated with job satisfaction (p < 0.01) and the standardized path coefficient is - 0.41. Job satisfaction is also negatively correlated with turnover intention (p < 0.01) and the standardized path coefficient is - 0.18. Burnout is positively correlated with turnover intention (p < 0.01) and the standardized path coefficient is 0.83. CONCLUSIONS: Job satisfaction is a mediating variable that affects the relationship between burnout and turnover intention. The mediating effect was a partial mediating effect and has a low impact of 7.4%. Improving treatment and giving more promotion opportunities for workers to improve job satisfaction, conducting career planning course and paying attention to employee psychological health to reduce job burnout. The above measures may be helpful to reduce employee turnover rate and alleviating the current situation of a shortage of health personnel in China.


Asunto(s)
Agotamiento Profesional , Personal de Salud/psicología , Intención , Satisfacción en el Trabajo , Reorganización del Personal , Atención Primaria de Salud , Adulto , China , Estudios Transversales , Femenino , Humanos , Masculino , Salud Mental , Persona de Mediana Edad , Encuestas y Cuestionarios
20.
Biochem Biophys Res Commun ; 496(2): 287-293, 2018 02 05.
Artículo en Inglés | MEDLINE | ID: mdl-29317208

RESUMEN

Recent studies have highlighted recruiting and activating brite adipocytes in WAT (so-called "browning") would be an attractive anti-obesity strategy. Zinc alpha2 glycoprotein (ZAG) as an important adipokine, is reported to ameliorate glycolipid metabolism and lose body weight in obese mice. However whether the body reducing effect mediated by browning programme remains unclear. Here, we show that overexpression of ZAG in 3T3-L1 adipocytes enhanced expression of brown fat-specific markers (UCP-1, PRDM16 and CIDEA), mitochondrial biogenesis genes (PGC-1α, NRF-1/2 and mtTFA) and the key lipid metabolism lipases (ATGL, HSL, CPT1-A and p-acyl-CoA carboxylase). Additionally, those effects were dramaticlly abolished by H89/SB203580, revealing ZAG-induced browning depend on PKA and p38 MAPK signaling. Overall, our findings suggest that ZAG is a candidate therapeutic agent against obesity via induction of brown fat-like phenotype in white adipocytes.


Asunto(s)
Adipocitos Marrones/metabolismo , Proteínas Portadoras/genética , Regulación de la Expresión Génica , Glicoproteínas/genética , Metabolismo de los Lípidos/genética , Células 3T3-L1 , Adipocitos Marrones/citología , Adipocitos Marrones/efectos de los fármacos , Adipoquinas , Animales , Proteínas Reguladoras de la Apoptosis/genética , Proteínas Reguladoras de la Apoptosis/metabolismo , Ligasas de Carbono-Carbono/genética , Ligasas de Carbono-Carbono/metabolismo , Carnitina O-Palmitoiltransferasa/genética , Carnitina O-Palmitoiltransferasa/metabolismo , Proteínas Portadoras/metabolismo , Proteínas Quinasas Dependientes de AMP Cíclico/genética , Proteínas Quinasas Dependientes de AMP Cíclico/metabolismo , Proteínas de Unión al ADN/genética , Proteínas de Unión al ADN/metabolismo , Glicoproteínas/metabolismo , Imidazoles/farmacología , Isoquinolinas/farmacología , Lipasa/genética , Lipasa/metabolismo , Ratones , Factor 2 Relacionado con NF-E2/genética , Factor 2 Relacionado con NF-E2/metabolismo , Factor Nuclear 1 de Respiración/genética , Factor Nuclear 1 de Respiración/metabolismo , Coactivador 1-alfa del Receptor Activado por Proliferadores de Peroxisomas gamma/genética , Coactivador 1-alfa del Receptor Activado por Proliferadores de Peroxisomas gamma/metabolismo , Piridinas/farmacología , Transducción de Señal , Sulfonamidas/farmacología , Factores de Transcripción/genética , Factores de Transcripción/metabolismo , Proteína Desacopladora 1/genética , Proteína Desacopladora 1/metabolismo
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA