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1.
Gen Comp Endocrinol ; 355: 114557, 2024 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-38797341

RESUMEN

The gonadotrope cells within the pituitary control vital processes of reproduction by producing follicle stimulating hormone (FSH) and luteinizing hormone (LH). Both external stimuli and internal regulatory factors contribute to the regulation of gonadotrope development and function. In recent years, growing evidences indicate that microRNAs (miRNAs), which regulate gene expression post-transcriptionally, play critical roles in multiple processes of gonadotrope development and function, including the syntheses of α or ß subunits of FSH and LH, the secretion of LH, the regulation of GnRH signaling, and the maintenance of gonadotrope cell kinetics. Here, we review recent advances of miRNAs' expression, functions and mechanisms approached by using miRNA knockout mouse models, in silico analysis and the in vitro cultures of primary pituitary cells and gonadotrope-derived cell lines. By summarizing and discussing different roles of miRNAs in gonadotropes, this minireview helps to gain insights into the complex molecular network in gonadotropes and reproduction.


Asunto(s)
Gonadotrofos , MicroARNs , Animales , MicroARNs/genética , MicroARNs/metabolismo , Gonadotrofos/metabolismo , Hormona Folículo Estimulante/metabolismo , Ratones , Hormona Luteinizante/metabolismo , Hipófisis/metabolismo , Humanos
2.
Int Wound J ; 21(3): e14804, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38385817

RESUMEN

The process of wound healing in the dental pulp is characterized by intricate interplay of signalling cascades, cellular responses, and extracellular matrix (ECM). The objective of this research was to examine the intricate interaction between signalling cascades, cellular responses, and extracellular matrix (ECM) dynamics that comprise the wound healing process of dental pulp. We conducted a controlled laboratory analysis of transcriptomic landscape of dental pulp tissues, including both healthy and inflamed samples, utilizing single-cell RNA sequencing. We identified significant change in cellular composition under carious conditions by analysing samples from 50 patients. Specifically, the proportion of immune cells increased from 25% to 40%, while the proportion of fibroblasts decreased from 20% to 10%. A transition towards ECM remodelling and fibrosis was indicated by this change. In addition, substantial increase inexpression of critical genes including COL1A1, FN1, IL-1B, IL-6 and TNC was detected, indicating that the extracellular matrix (ECM) was actively remodelled and that a robust inflammatory response was present, both of which are vital for tissue repair. Increased cell-cell interactions among B cells, plasma cells, macrophages and MSCs, and fibroblasts were highlighted in our study, demonstrating the intricate cellular dynamics that occur in response to dental pulp injury. The knowledge gained regarding the cellular and molecular processes underlying pulp wound healing contributed to the advancement of knowledge regarding pulp pathology and regeneration. Moreover, it established a foundation for creation of targeted therapeutic interventions that seek to maximize pulp repair and regeneration. This study represented noteworthy achievement in the field of dental surgery, establishing a solid groundwork for subsequent investigations into regenerative medicine, wound healing, and dental tissue restoration.


Asunto(s)
Pulpa Dental , Perfilación de la Expresión Génica , Humanos , Estado de Salud , Fibroblastos , Análisis de Secuencia de ARN
3.
Zhonghua Nan Ke Xue ; 30(7): 658-662, 2024 Jul.
Artículo en Zh | MEDLINE | ID: mdl-39212403

RESUMEN

The testis, as one of the important reproductive organs in men, has two major functions of secreting androgens and producing sperm. Androgen and spermatogenesis are the key factors for the evaluation of the testicular function. The lack of androgen or the decline of spermatogenic function is both a symbolic manifestation and a "product" of testis aging. In order to gain a deeper insight into the relationship between testis aging and overall health, this article reviews the relevant literature based on the correlation of androgen deficiency with various systemic diseases and the belief in the impacts of testis aging on the health of the cardiovascular and nervous systems through different channels, the development and progression of metabolic diseases, orthopedic diseases, PCa, kidney disease, peptic ulcer and other diseases. All these suggest that adequate attention should be paid to the studies of male reproductive health and its impact on overall health, so as to provide some new ideas and evidence for clinical diagnosis and treatment of relevant conditions.


Asunto(s)
Envejecimiento , Testículo , Humanos , Masculino , Envejecimiento/fisiología , Espermatogénesis , Andrógenos/metabolismo
4.
Kidney Blood Press Res ; 48(1): 209-219, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36780878

RESUMEN

INTRODUCTION: Acute kidney injury (AKI) is a clinical emergency caused by the rapid decline of renal function caused by various etiologies. Growth differentiation factor 11 (GDF11) can promote renal tubular regeneration and improve kidney function in AKI, but the specific mechanism remains unclear. Herein, we investigated the effect and mechanisms of GDF11 in ameliorating AKI induced by ischemia-reperfusion (I/R). METHODS: An animal model of AKI was established by I/R method, and the changes of serum urea nitrogen and creatinine were measured to evaluate the AKI. Enzyme-linked immunosorbent assay (ELISA) was used to measure cytokines, malondialdehyde, superoxide dismutase, nitric oxide synthase, and arginase 1 levels. Flow cytometry was used to count the M1/M2 macrophages. IHC, WB, and q-PCR experiments were used to evaluate the expression of GDF11. RESULTS: The changes in serum levels of urea nitrogen and creatinine after I/R suggest that an animal model of AKI induced by I/R was successfully established. AKI caused by I/R significantly changed the M1/M2 macrophage polarization balance, with an increase in M2 being significantly higher than M1 as well as increased oxidative stress. Treatment with GDF11 after I/R significantly increased the differentiation of M2 cells and inhibited the differentiation of M1 macrophages, as well as decreased oxidative stress. CONCLUSION: GDF11 can promote the repair of AKI caused by I/R by regulating the balance of M1/M2 polarization in macrophages and oxidative stress.


Asunto(s)
Lesión Renal Aguda , Daño por Reperfusión , Animales , Lesión Renal Aguda/etiología , Lesión Renal Aguda/metabolismo , Creatinina/metabolismo , Factores de Diferenciación de Crecimiento/genética , Factores de Diferenciación de Crecimiento/metabolismo , Isquemia/complicaciones , Riñón/metabolismo , Macrófagos/metabolismo , Nitrógeno/metabolismo , Reperfusión/efectos adversos , Daño por Reperfusión/complicaciones , Daño por Reperfusión/metabolismo , Urea/metabolismo
5.
Biochem Genet ; 61(4): 1319-1333, 2023 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-36585568

RESUMEN

Cataract is a global eye disease caused by the opacification of lens, while its underlying molecular pathogenesis is not clear, making it difficult for prevention. CELF1, an RNA binding protein, mediates Alternative Splicing (AS) of genes involved in diverse diseases and regulates development or defects of lens. Utilizing transcriptome-wide approaches, we analyzed and compared AS patterns between human lens epithelial cells (SRA01/04) with CELF1 overexpression (CELF1-OE) and control cells. Extensive changes in AS patterns upon CELF1-OE were identified in SRA01/04 cells. We finally identified 840 CELF1-regulated AS events (RASEs) and found that CELF1-OE preferred to repress exon skipping events in SRA01/04 cells. CELF1-regulated AS genes were enriched in the regulation of DNA repair, cellular response to DNA damage stimulus, and apoptosis pathways (including HMGA2, CSNK1E, and YAP1). These biological functions and pathways have been reported to be associated with lens development or other eye diseases. To further explore the mechanisms of CELF1 in regulating AS genes, we downloaded and re-analyzed a set of CELF1-RNA interactome data. We found that 194 genes were bound and regulated by CELF1 at the AS level. 10 genes involved in DNA repair-related pathways were also bound by CELF1. Motif analysis for CELF1-bound peaks and splicing sites of RASEs showed that CELF1 regulates AS by binding to the AGGU[AG]AG motif in SRA01/04 cells. CELF1 could mediate AS of DNA repair-related genes through directly binding to their transcripts with distinct motif bias. The functional mechanism of CELF1 may ultimately participate in cataract formation and lens development.


Asunto(s)
Empalme Alternativo , Catarata , Humanos , Proteínas CELF1/genética , Proteínas CELF1/metabolismo , Línea Celular , Catarata/genética , Proteínas de Unión al ARN/genética , Proteínas de Unión al ARN/metabolismo
6.
BMC Ophthalmol ; 22(1): 122, 2022 Mar 14.
Artículo en Inglés | MEDLINE | ID: mdl-35287612

RESUMEN

BACKGROUND: RNA binding proteins (RBPs)-mediated regulation plays important roles in many eye diseases, including the canonical RBP CELF1 in cataract. While the definite molecular regulatory mechanisms of CELF1 on cataract still remain elusive. METHODS: In this study, we overexpressed CELF1 in human cultured lens epithelial SRA01/04 cells and applied whole transcriptome sequencing (RNA-seq) method to analyze the global differences mediated by CELF1. We then analyzed public RNA-seq and CELF1-RNA interactome data to decipher the underlying mechanisms. RESULTS: The results showed that transcriptome profile was globally changed by CELF1 overexpression (CELF1-OE). Functional analysis revealed CELF1 specifically increased the expression of genes in extracellular matrix disassembly, extracellular matrix organization, and proteolysis, which could be classified into matrix metalloproteinases (MMPs) family. This finding was also validated by RT-qPCR and public mouse early embryonic lens data. Integrating analysis with public CELF1-RNA interactome data revealed that no obvious CELF1-binding peak was found on the transcripts of these genes, indicating an indirectly regulatory role of CELF1 in lens epithelial cells. CONCLUSIONS: Our study demonstrated that CELF1-OE promotes transcriptional level of MMP genes; and this regulation may be completed by other ways except for binding to RNA targets. These results suggest that CELF1-OE is implicated in the development of lens, which is associated with cataract and expands our understanding of CELF1 regulatory roles as an RNA binding protein.


Asunto(s)
Células Epiteliales , Proteínas de Unión al ARN , Animales , Proteínas CELF1/genética , Proteínas CELF1/metabolismo , Células Epiteliales/metabolismo , Metaloproteinasas de la Matriz/genética , Ratones , Proteínas de Unión al ARN/genética , Proteínas de Unión al ARN/metabolismo , Transcriptoma
7.
BMC Ophthalmol ; 22(1): 447, 2022 Nov 19.
Artículo en Inglés | MEDLINE | ID: mdl-36402981

RESUMEN

BACKGROUND: This study provides a detailed description of a Chinese family with North Carolina macular dystrophy (NCMD) and explores its possible pathogenesis. METHODS: Five individuals from a three-generation family underwent general ophthalmic examination, multi-imaging examinations and visual electrophysiology examinations when possible. Genetic characterization was carried out by target region sequencing and high-throughput sequencing in affected patients. RESULTS: Despite severe fundus changes, patients had relatively good visual acuity. Genetic analysis showed that affected patients had PRDM13 gene duplication and heterozygous mutations of the ABCA4 gene. Optical coherence tomography (OCT) showed an abnormal retinal pigment epithelium (RPE) layer in patients with grade 2 lesions, while the neurosensory retina was relatively normal. In grade 3 patients, RPE and choroid atrophy were greater than that of the neurosensory retina, showing concentric atrophy. CONCLUSIONS: RPE and choroidal atrophy were found to play an important role in the development of macular caldera.


Asunto(s)
Distrofias Hereditarias de la Córnea , Humanos , Linaje , Distrofias Hereditarias de la Córnea/diagnóstico , Distrofias Hereditarias de la Córnea/genética , Tomografía de Coherencia Óptica , Atrofia , Transportadoras de Casetes de Unión a ATP/genética
8.
BMC Ophthalmol ; 22(1): 24, 2022 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-35033040

RESUMEN

BACKGROUND: Herein, we report two cases of unilateral retinal pigment epithelium dysgenesis (URPED) in Chinese patients and explore the relationship between URPED and combined hamartoma of the retina and retinal pigment epithelium (CHRRPE). CASE PRESENTATION: The lesion margins in the two cases showed pathognomonic clinical features of URPED, namely, a scalloped reticular margin in hyperplastic retinal pigment epithelium and mild fibrosis. The hypoautofluorescence observed by fundus autofluorescence was inverted compared with that observed by fundus fluorescence angiography. A large amount of fibroglial proliferation and disorganization of the retina involving the whole layer, which are also found in peripapillary CHRRPE, were found in the lesions. CONCLUSIONS: URPED appears to share some clinical features with CHRRPE, and the relationship between URPED and CHRRPE needs further study.


Asunto(s)
Hamartoma , Enfermedades de la Retina , Angiografía con Fluoresceína , Hamartoma/diagnóstico , Humanos , Retina , Enfermedades de la Retina/diagnóstico , Epitelio Pigmentado de la Retina , Tomografía de Coherencia Óptica
9.
Eat Weight Disord ; 27(7): 2561-2568, 2022 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-35459986

RESUMEN

BACKGROUND: Studies have shown that the reference equations for the six-minute walking distance (6MWD), which were mainly derived from healthy, normal-weight people, are not suitable for individuals with obesity. The main purpose of this study was to establish reference equations for the 6MWD in obese Chinese subjects. METHODS: In our study, a total of 214 individuals with obesity performed the six-minute walking tests (6MWTs) according to the American thoracic society (ATS) guidelines, and the longer 6MWD was used for further analysis. The reference equations for the 6MWD were developed using stepwise multiple regression analysis. The newly established equations for the 6MWD were compared to the existing prediction equations. RESULTS: The mean 6MWD for the cohort was 523 ± 56 m. We found that the reliability of two 6MWTs was good. Age and BMI were identified as independent factors, and explained 31% and 27% of the variance in the 6MWD for the male and female participants, respectively. Thus, the reference equations reported in the previous studies did not accurately predict the 6MWD in our subjects. CONCLUSION: Our study was the first to describe the 6MWD in obese Chinese subjects and to propose new predictive equations. These established equations can improve the assessment of the health of obese Chinese patients whose exercise capacity is affected by the disease. LEVEL OF EVIDENCE: III, Cohort study.


Asunto(s)
Obesidad , Caminata , Adulto , China , Estudios de Cohortes , Femenino , Humanos , Masculino , Valores de Referencia , Reproducibilidad de los Resultados
10.
BMC Ophthalmol ; 21(1): 201, 2021 May 07.
Artículo en Inglés | MEDLINE | ID: mdl-33962570

RESUMEN

BACKGROUND: Numerous cases with ocular toxicity secondary to tamoxifen have been reported, and became more apparent with keratopathy, cataract, optic neuritis, macular holes, crystalline retinopathy with or without cystoid macular edema (CME). Withdrawing tamoxifen with the approval of the oncologist is the major treatment for cases with tamoxifen-induced retinopathy. CASE PRESENTATION: We herein reported a patient with a two-year history of painless and reduced visual acuity in both eyes who received tamoxifen therapy for 6 years. Tamoxifen-induced rentinopathy with CME showed significant development even though the patient has already discontinued tamoxifen treatment for 6 months. Anatomic improvements after intravitreal ranibizumab injection in both eyes were significant but were temporary. Surprisingly, CME in both eyes has been resolved spontaneously after 10 months in the penultimate visit without any therapy. CONCLUSION: Intravitreal ranibizumab injection temporarily improved the anatomy of the eyes in a case with tamoxifen-induced CME, and only tamoxifen withdrawal can bring a sustained effect.


Asunto(s)
Edema Macular , Bevacizumab/uso terapéutico , Humanos , Inyecciones Intravítreas , Edema Macular/inducido químicamente , Edema Macular/tratamiento farmacológico , Ranibizumab/uso terapéutico , Tamoxifeno/efectos adversos , Tomografía de Coherencia Óptica , Agudeza Visual
12.
Mol Vis ; 26: 1-13, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32165822

RESUMEN

Background: As a disorder occurs in the eyes, keratoconus (KC) is induced by the thinning of the corneal stroma. This study was designed to reveal the key long non-coding RNAs (lncRNAs), microRNAs (miRNAs), and mRNAs involved in the mechanisms of KC. Methods: Transcriptome RNA-seq data set GSE112155 was acquired from the Gene Expression Omnibus database, which contained 10 KC samples and 10 myopic control samples. Using the edgeR package, the differentially expressed (DE)-mRNAs between KC and control samples were screened. The DE-lncRNAs and DE-miRNAs in this data set were identified using the HUGO Gene Nomenclature Committee (HGNC). Using the pheatmap package, bidirectional hierarchical clustering of the DE-RNAs was conducted. Then, an enrichment analysis of the DE-mRNAs was performed using the DAVID tool. Moreover, a competitive endogenous RNA (ceRNA) regulatory network was built using the Cytoscape software. After KC-associated pathways were searched within the Comparative Toxicogenomics Database, a KC-associated ceRNA regulatory network was constructed. Results: There were 282 DE-lncRNAs (192 upregulated and 90 downregulated), 40 DE-miRNAs (29 upregulated and 11 downregulated), and 910 DE-mRNAs (554 upregulated and 356 downregulated) between the KC and control samples. A total of 34 functional terms and 9 pathways were enriched for the DE-mRNAs. In addition, 6 mRNAs (including PPARG, HLA-B, COL4A1, and COL4A2), 5 miRNAs (including miR-181a), 9 lncRNAs (including XIST), and the XIST-miR-181a-COL4A1 axis were involved in the KC-associated ceRNA regulatory network. Conclusions: PPARG, HLA-B, COL4A1, COL4A2, miR-181a, and XIST might be correlated with the development of KC. Further, the XIST-miR-181a-COL4A1 axis might be implicated in the pathogenesis of KC.


Asunto(s)
Colágeno Tipo IV/metabolismo , Queratocono/genética , Queratocono/metabolismo , MicroARNs/metabolismo , ARN Largo no Codificante/metabolismo , Colágeno Tipo IV/genética , Bases de Datos Genéticas , Progresión de la Enfermedad , Regulación hacia Abajo , Regulación de la Expresión Génica/genética , Ontología de Genes , Redes Reguladoras de Genes , Antígenos HLA-B/genética , Antígenos HLA-B/metabolismo , Humanos , MicroARNs/genética , PPAR gamma/genética , PPAR gamma/metabolismo , ARN Largo no Codificante/genética , Transducción de Señal/genética , Transcriptoma , Regulación hacia Arriba
13.
BMC Pulm Med ; 20(1): 177, 2020 Jun 22.
Artículo en Inglés | MEDLINE | ID: mdl-32571358

RESUMEN

BACKGROUND: The six-minute walking test (6MWT) is a tool that plays a key role in evaluating the functional exercise capacity, prognosis and evaluation of treatment response of patients with various cardiopulmonary diseases. However, standard reference equations are currently unavailable for the six-minute walking distance (6MWD) for people aged 60-85 years in China. The purpose of this study was to 1) measure the 6MWD of healthy Chinese people aged 60-85 years, 2) establish reference equations for predicting the 6MWD, and 3) compare our reference equations with equations reported in previously published studies. METHOD: We obtained informed consent from each participant prior to the test, and the research design was approved by the Ethics Committee of Wenzhou People's Hospital. The demographic and anthropometric data and the 6MWD of healthy Chinese subjects aged 60-85 years old were measured using a standardized protocol. Every subject completed two 6MWTs, and the longest 6MWD further analyzed. RESULTS: Two hundred sixty-six subjects (128 males and 138 females) completed the 6MWT, and the mean walking distance was 518 ± 72 m. Males achieved a longer walking distance than females (518 ± 72 m vs. 487 ± 70 m; p < 0.0001), and active subjects achieved a longer walking distance than nonactive subjects (512 ± 76 m vs. 485 ± 63 m; p < 0.0001). According to the univariate analysis, the 6MWD was significantly associated with age, height, body mass index (BMI), heart rate and blood pressure after exercise and changes in heart rate before and after exercise. The stepwise multivariate regression analysis identified age, height and BMI as independent predictors of the 6MWD. The reference equations for Caucasians and South Americans tended to overestimate the 6MWD of our subjects, while the equations for Asian and African populations tended to underestimate the 6MWD. CONCLUSIONS: This study is the first to describe the 6MWD of healthy Chinese people aged 60-85 years, and reference prediction equations were proposed. These findings will help to improve the evaluation of Chinese patients with diseases that affect exercise capacity.


Asunto(s)
Pueblo Asiatico , Frecuencia Cardíaca , Prueba de Paso , Caminata , Anciano , Anciano de 80 o más Años , Índice de Masa Corporal , Peso Corporal , China , Femenino , Voluntarios Sanos , Humanos , Masculino , Persona de Mediana Edad , Valores de Referencia , Análisis de Regresión
14.
J Electrocardiol ; 54: 40-42, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-30870633

RESUMEN

A 54-year-old man presented to the emergency department with chest pain and electrocardiogram (ECG) changes of acute ST-segment elevation myocardial infarction (STEMI) and junctional ST-depression with tall symmetrical T-waves (de Winter T-wave) in the lateral and inferior leads. Emergent coronary angiography revealed a culprit lesion in the gigantic obtuse marginal artery (OM). This case demonstrates the de Winter T-wave can occur in a patient with an acute occlusion of OM. Emergency physicians, ambulance staff, cardiologists and all involved in STEMI networks should familiarize themselves with this unusual ECG pattern and consider transferring patients for urgent angiography and reperfusion therapy.


Asunto(s)
Electrocardiografía , Infarto del Miocardio con Elevación del ST/diagnóstico , Infarto del Miocardio con Elevación del ST/fisiopatología , Angiografía Coronaria , Diagnóstico Diferencial , Humanos , Masculino , Persona de Mediana Edad
15.
BMC Cardiovasc Disord ; 18(1): 51, 2018 03 13.
Artículo en Inglés | MEDLINE | ID: mdl-29534678

RESUMEN

BACKGROUND: Atrial fibrillation (AF) usually originates from pulmonary veins (PVs) but can also be caused by pulmonary veins outside, such as the coronary sinus (CS), the superior vena cava (SVC), and the ligament of Marshall. CASE PRESENTATION: A 69-year-old male with a history of palpitations for 10 years was referred to our institute because of its recurrence for half a day. A dynamic electrocardiogram revealed sinus rhythm (SR) and paroxysmal AF. Echocardiography demonstrated normal cardiac structure, and physical examination results were unremarkable. However, computed tomography angiography (CTA) showed a persistent left superior vena cava (LSVC) but no indication of thrombosis in the left atria. A cryoablation catheter was inserted into the PV. After the PV was successfully isolated, AF was still observed. After cardioversion was synchronized, SR was detected, but AF occurred again in less than a minute. Finally, we observed ectopic atrial electrical activity originating from the LSVC and successfully ablated it. CONCLUSIONS: An LSVC may be a substrate for initiating or perpetuating atrial arrhythmia. Cryoballoon ablation can help treat AF originating from the LSVC.


Asunto(s)
Fibrilación Atrial/cirugía , Cateterismo Cardíaco/instrumentación , Catéteres Cardíacos , Criocirugía/instrumentación , Vena Cava Superior/anomalías , Vena Cava Superior/cirugía , Potenciales de Acción , Anciano , Fibrilación Atrial/diagnóstico , Fibrilación Atrial/fisiopatología , Angiografía por Tomografía Computarizada , Electrocardiografía , Frecuencia Cardíaca , Humanos , Masculino , Flebografía/métodos , Resultado del Tratamiento , Vena Cava Superior/diagnóstico por imagen , Vena Cava Superior/fisiopatología
16.
BMC Pulm Med ; 17(1): 119, 2017 Aug 29.
Artículo en Inglés | MEDLINE | ID: mdl-28851335

RESUMEN

BACKGROUND: The six-minute walk test (6MWT) is a safe, simple, inexpensive tool for evaluating the functional exercise capacity. However, there is a lack of standard reference equations for the six-minute walk distance (6MWD) in the healthy Chinese Han population with an age of 18-30 years. The aims of the present study were as follows: 1) to measure the anthropometric data and the walking distance in a sample of healthy Chinese Han population, aged 18-30 years; 2) to construct reference equations for the 6MWD; 3) to compare the measured 6MWD of our cohort with previously published equations. METHODS: The anthropometric data, demographic, lung function and the walking distance of Chinese Han population, aged 18-30 years, were prospectively measured using a standardized protocol. Informed consent was obtained from each participant and the approval was obtained from the ethics committee of Wenzhou People's Hospital. The 6MWT was performed twice and the longer 6MWD was used for further analysis. RESULTS: A total of 355 subjects (176 female and 179 male) completed the 6MWT, and the average walking distance was 627.3 ± 52.88 m. The walking distance was achieved by females compared with males (607.4 ± 51.00 m vs. 646.9 ± 47.15 m; p < 0.0001) and active subjects compared with non-active subjects (646.1 ± 48.27 m vs. 611.6 ± 51.52 m; p < 0.0001). Univariate analysis showed age, height, body mass index, resting blood pressure, heart rate and blood pressure after the walk test and difference in heart rate before and after the walk test were significantly correlated with the 6MWD. Stepwise multiple regression analysis showed that height and difference in heart rate before and after the walk test were independent predictors associated with the 6MWD. The reference equations from Caucasian, Canadian and Chilean populations tend to overestimate the walking distance in our subjects, while Brazilian and Arabian equations tend to underestimate the walking distance. There was no significant difference in the walking distance between Korean equations and the current study. CONCLUSION: In summary, height and difference in heart rate before and after the walk test were the most significant predictors of the 6MWD, and the regression equations could explain approximately 38% and 31% of the distance variance in the female and male groups, respectively.


Asunto(s)
Pueblo Asiatico , Frecuencia Cardíaca , Prueba de Paso , Caminata , Adolescente , Adulto , Índice de Masa Corporal , Peso Corporal , China , Femenino , Voluntarios Sanos , Humanos , Masculino , Valores de Referencia , Análisis de Regresión , Factores Sexuales , Adulto Joven
17.
Int J Mol Sci ; 18(2)2017 Feb 10.
Artículo en Inglés | MEDLINE | ID: mdl-28208619

RESUMEN

Dihydroartemisinin (DHA), a semi-synthetic derivative of artemisinin, is known to play important roles in inhibiting proliferation rate, inducing apoptosis, as well as hindering the metastasis and invasion of glioma cells, but the underlying mechanisms are still unclear so far. In this study, methyl thiazolyl tetrazolium (MTT), colony-forming, wound healing, invasion, and apoptosis assays were performed to investigate the effect of DHA on malignant glioma cells. Results showed that DHA induced apoptosis of malignant glioma cells through Protein Kinase B (AKT) axis, induced death of malignant glioma cells by downregulating miR-21, and inhibited the invasion of malignant glioma cells corresponding with up-regulation of the reversion-inducing-cysteine-rich protein with kazal motifs (RECK). These results revealed that AKT axis, miR-21, and RECK play pivotal roles in DHA killing malignant glioma cells, suggesting that DHA is a potential agent for treating glioma.


Asunto(s)
Apoptosis/efectos de los fármacos , Apoptosis/genética , Artemisininas/farmacología , Proteínas Ligadas a GPI/genética , Glioma/genética , MicroARNs/genética , Proteínas Proto-Oncogénicas c-akt/genética , Adulto , Anciano , Línea Celular Tumoral , Movimiento Celular , Proliferación Celular , Femenino , Regulación Neoplásica de la Expresión Génica/efectos de los fármacos , Glioma/metabolismo , Glioma/patología , Humanos , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias
18.
Antimicrob Agents Chemother ; 59(7): 4121-8, 2015 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-25941216

RESUMEN

Nucleos(t)ide analogues rarely result in a durable off-treatment response in chronic hepatitis B infection, whereas pegylated interferon (Peg-IFN) induces a long-lasting response only in a subset of patients. We assessed the effect of sequential combination therapy with Peg-IFN-α2a and entecavir in hepatitis B e antigen (HBeAg)-positive patients with prior long-term entecavir therapy and investigated the predictors of response to treatment. HBeAg-positive individuals who did not achieve HBeAg seroconversion during previous long-term entecavir therapy, receiving Peg-IFN-α2a added to ongoing entecavir therapy (sequential combination [S-C] therapy; n = 81) for 48 weeks or remaining on entecavir monotherapy (n = 116), were retrospectively included. A matched pair was created at a 1:1 ratio from each treatment group. The primary endpoint was HBeAg seroconversion at week 48. Subgroup analysis of response prediction was conducted for 81 patients with S-C therapy. More patients in the S-C therapy group achieved HBeAg seroconversion than those in the entecavir group (44% versus 6%; P < 0.0001). An HBeAg level of <200 signal-to-cutoff ratio (S/CO) at baseline was a strong predictor for higher HBeAg seroconversion than that achieved when HBeAg was ≥200 S/CO (64.2% versus 17.9%; P < 0.0001). Hepatitis B surface antigen (HBsAg) levels at baseline and the decrease in HBsAg levels predicted HBsAg loss in the S-C therapy group. The combination of baseline HBeAg of <200 S/CO and HBsAg of <1,000 IU/ml and an HBsAg decline at week 12 of ≥0.5 log10 IU/ml provided the highest rate of HBeAg seroconversion (92.31%) and HBsAg loss (83.3%) at week 48. Patients receiving sequential combination therapy have a higher rate of HBeAg seroconversion and are more likely to experience HBsAg clearance than do those continuing entecavir monotherapy. Sequential combination therapy can be guided by baseline HBsAg/HBeAg levels and on-treatment HBsAg dynamics.


Asunto(s)
Antivirales/uso terapéutico , Guanina/análogos & derivados , Antígenos de Superficie de la Hepatitis B/inmunología , Antígenos e de la Hepatitis B/inmunología , Hepatitis B Crónica/tratamiento farmacológico , Interferón-alfa/uso terapéutico , Polietilenglicoles/uso terapéutico , Adulto , Área Bajo la Curva , Determinación de Punto Final , Femenino , Guanina/uso terapéutico , Hepatitis B Crónica/inmunología , Hepatitis B Crónica/virología , Humanos , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Proteínas Recombinantes/uso terapéutico , Estudios Retrospectivos , Seroconversión , Resultado del Tratamiento , Adulto Joven
19.
Cell Tissue Bank ; 16(2): 271-81, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-24929994

RESUMEN

Cerebral glioma is the most common brain tumor as well as one of the top ten malignant tumors in human beings. In spite of the great progress on chemotherapy and radiotherapy as well as the surgery strategies during the past decades, the mortality and morbidity are still high. One of the major challenges is to explore the pathogenesis and invasion of glioma at various "omics" levels (such as proteomics or genomics) and the clinical implications of biomarkers for diagnosis, prognosis or treatment of glioma patients. Establishment of a standardized tissue bank with high quality biospecimens annotated with clinical information is pivotal to the solution of these questions as well as the drug development process and translational research on glioma. Therefore, based on previous experience of tissue banks, standardized protocols for sample collection and storage were developed. We also developed two systems for glioma patient and sample management, a local database for medical records and a local image database for medical images. For future set-up of a regional biobank network in Shanghai, we also founded a centralized database for medical records. Hence we established a standardized glioma tissue bank with sufficient clinical data and medical images in Huashan Hospital. By September, 2013, tissues samples from 1,326 cases were collected. Histological diagnosis revealed that 73 % were astrocytic tumors, 17 % were oligodendroglial tumors, 2 % were oligoastrocytic tumors, 4 % were ependymal tumors and 4 % were other central nervous system neoplasms.


Asunto(s)
Bancos de Muestras Biológicas/normas , Investigación Biomédica/normas , Glioma/patología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Preescolar , China , Bases de Datos Factuales/normas , Femenino , Glioma/cirugía , Humanos , Lactante , Masculino , Persona de Mediana Edad , Manejo de Especímenes , Investigación Biomédica Traslacional/normas , Adulto Joven
20.
Kaohsiung J Med Sci ; 2024 Aug 21.
Artículo en Inglés | MEDLINE | ID: mdl-39166861

RESUMEN

Glioma, a common malignancy, is characterized by high morbidity and mortality. Promoting ferroptosis can delay tumor progression. Here, we aimed to explore the underlying mechanism of ferroptosis in glioma. In vitro and in vivo experiments were conducted using glioma cells and nude mice. The expression of genes and proteins was evaluated by RT-qPCR, Western blot assay, and immunohistochemical staining. Malignant activities of glioma cells were evaluated using MTT, EdU, and Transwell assays. The levels of Fe2+, lipid reactive oxygen species, and malondialdehyde were determined using commercial kits. The interplays among CMTM5, WWP2, and LATS2 were validated using Co-immunoprecipitation assay. The UALCAN database predicted downregulation of CMTM5 expression in glioma, and low expression of CMTM5 was associated with poor survival outcomes. CMTM5 overexpression inhibited cell growth and invasion and promoted ferroptosis of glioma cells. Besides, CMTM5 protein interacted with WWP2 protein and decreased WWP2 expression. WWP2 silencing attenuated LATS2 ubiquitination to enhance LATS2 expression and phosphorylation of YAP1. CMTM5 exerted a suppressive effect on cell growth and invasion and promoted ferroptosis of glioma cells by regulating the WWP2/LATS2 pathway. In the in vivo experiments, CMTM5 overexpression suppressed tumor growth and enhanced ferroptosis. CMTM5 regulated Hippo/YAP signaling to inhibit cell growth and invasion and to promote ferroptosis in glioma by regulating WWP2-mediated LATS2 ubiquitination, thereby attenuating glioma progression.

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