Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 18 de 18
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
Front Public Health ; 12: 1360940, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38532977

RESUMO

Background: The main purpose of this study is to analyze the relationship between moral sensitivity, empathy, and caring behaviors and to explore the mediating effect of empathy on moral sensitivity and caring behaviors of nursing interns. Methods: A cross-sectional survey was conducted from August to September 2022 in which 261 nursing interns from two Grade 3A Hospitals in Xi'an participated. The questionnaires used in the survey include the General Information Questionnaire (GIQ), the Moral Sensitivity Questionnaire-Revised Version translated into Chinese (MSQ R-CV), the Chinese version of the Jefferson Empathy Scale (JSE), and the Chinese version of the Caring Behavior Inventory (C-CBI). The obtained data were analyzed through descriptive statistics, a one-way analysis of variance (ANOVA), and Pearson's correlation coefficient, and the mediating effect of empathy was tested through structural equations. Results: The overall mean of moral sensitivity of nursing interns in two Grade 3A Hospitals in Xi'an is 40.84 ± 8.73, the overall mean of empathy is 100.51 ± 21.56, and the overall mean of caring behavior is (113.81 ± 21.05). Statistical analysis showed that there is a positive correlation between moral sensitivity and caring behavior of nursing interns (r = 0.376, p < 0.01), between their empathy and moral sensitivity (r = 0.336, p < 0.01), and between their empathy and caring behavior (r = 0.394, p < 0.01). The empathy of nursing interns has a mediated effect on the relationship between moral sensitivity and caring behavior. The mediated effect value was 0.14, accounting for 31.82% of the total effect. Conclusion: The moral sensitivity of nursing interns can have a direct impact on predicting the caring behavior and indirect influences their caring behaviors mediated by empathy, with the latter effect being mediated by empathy. Therefore, nursing educators and hospital administrators should adopt targeted interventions to improve the moral sensitivity and empathy of nursing interns, which can further prove to be beneficial in improving their caring behaviors, leading to enhanced quality of nursing care and reduced nurse-patient conflicts and finally to a stabilized nursing team.


Assuntos
Empatia , Princípios Morais , Humanos , Estudos Transversais , Análise de Variância , Inquéritos e Questionários
2.
J Back Musculoskelet Rehabil ; 36(5): 1139-1150, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37458014

RESUMO

BACKGROUND: Myofascial pain syndrome (MPS) is a common disease with easy persistence and recurrence. In clinical practice, although many methods have been adopted to prevent and treat MPS, the control of MPS is still not satisfactory. OBJECTIVE: To compare the safety and effectiveness of buccal acupuncture, inactivation of trigger points (MTrPs), and their combination in the treatment of MPS. METHODS: Two hundred MPS patients in the pain clinic were randomly divided into four groups (n= 50) to receive oral drugs (Group A), oral drugs + buccal needle (Group B), oral drugs + MTrP inactivation (Group C), or oral drugs + buccal needle + MTrP inactivation (Group D). RESULTS: The visual analogue scale (VAS) and cervical range of motion (ROM) of Group D were significantly lower than those of the other three groups, and the pressure pain threshold (PPT) value of labelled MTrPs was significantly higher than those of the other three groups (P< 0.05). The excellent rate and total effective rate of Group D were significantly higher than those of the other three groups. Group C had the highest pain score and the lowest acceptance score. The results showed that buccal acupuncture combined with ultrasound-guided dry needle-evoked inactivation of MTrPs can significantly reduce the VAS score of MPS patients, improve the range of motion of the cervical spine, and improve patient satisfaction. CONCLUSIONS: This study provides a highly accepted and satisfactory treatment for MPS, which is worthy of clinical promotion.


Assuntos
Terapia por Acupuntura , Fibromialgia , Síndromes da Dor Miofascial , Humanos , Pontos-Gatilho , Ombro , Síndromes da Dor Miofascial/terapia , Ultrassonografia de Intervenção
3.
World J Clin Cases ; 11(14): 3275-3281, 2023 May 16.
Artigo em Inglês | MEDLINE | ID: mdl-37274040

RESUMO

BACKGROUND: Here, we present a unique case of mitochondrial encephalomyopathy with lactic acidosis and stroke-like episodes (MELAS) syndrome, which initially appeared to be autoimmune encephalitis and was ultimately confirmed as MELAS with the mitochondrial DNA 3243A>G mutation. CASE SUMMARY: A 58-year-old female presented with acute-onset speech impediment and auditory hallucinations, symmetrical bitemporal lobe abnormalities, clinical and laboratory findings, and a lack of relevant prodromal history, which suggested diagnosis of autoimmune encephalitis. Further work-up, in conjunction with the patient's medical history, family history, and lactate peak on brain lesions on magnetic resonance imaging, suggested a mitochondrial disorder. Mitochondrial genome analysis revealed the m.3243A>G variant in the MT-TL1 gene, which led to a diagnosis of MELAS syndrome. CONCLUSION: This case underscores the importance of considering MELAS as a potential cause of autoimmune encephalitis even if patients are over 40 years of age, as the symptoms and signs are atypical for MELAS syndrome.

4.
World J Clin Cases ; 10(24): 8648-8655, 2022 Aug 26.
Artigo em Inglês | MEDLINE | ID: mdl-36157799

RESUMO

BACKGROUND: Anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis is a treatable but frequently misdiagnosed autoimmune disease. Speech dysfunction, as one of the common manifestations of anti-NMDAR encephalitis, is usually reported as a symptom secondary to psychiatric symptoms or seizures rather than the initial symptom in a paroxysmal form. We report a case of anti-NMDAR encephalitis with paroxysmal speech disorder as a rare initial manifestation, and hope that it will contribute to the literature. CASE SUMMARY: A 39-year-old man with anti-NMDAR encephalitis initially presented with paroxysmal nonfluent aphasia and was misdiagnosed with a transient ischemic attack and cerebral infarction successively. The patient subsequently presented with seizures, but no abnormalities were found on brain magnetic resonance imaging or electroencephalogram. Cerebrospinal fluid (CSF) analysis revealed mild pleocytosis and increased protein levels. Anti-NMDAR antibodies in serum and CSF were detected for a conclusive diagnosis. After immunotherapy, the patient made a full recovery. CONCLUSION: This case suggests that paroxysmal speech disorder may be the presenting symptom of anti-NMDAR encephalitis in a young patient.

5.
J Nurs Manag ; 30(2): 428-438, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-34704641

RESUMO

AIM: To explore the relationships among self-efficacy, information literacy, social support and career success of clinical nurses and identify factors influencing clinical nurses' career success in northwestern China. BACKGROUND: Understanding the influencing factors of career success is important for the professional development of nurses and the improvement of clinical nursing quality. Many influencing factors of career success have been identified, but there is no large-scale research on the relationships among self-efficacy, information literacy, social support and career success of clinical nurses based on Kaleidoscope Career Model. Studies examining the association of the four factors remain limited. METHODS: A total of 3011 clinical nurses from 30 hospitals in northwestern China were selected in the cross-sectional survey, and the response rate was 94.71%. The clinical nurses completed the online self-report questionnaires including self-efficacy, information literacy, social support rating scale and career success scale. The data were analysed by SPSS23.0 statistical software using t test, analysis of variance, Pearson's correlation and multiple linear regression. Structural equation model (SEM) was used to analyse the influencing factors of career success using Mplus 8.3. RESULTS: The career success of clinical nurses in northwestern China was at a medium level. The linear multivariate regression analysis showed that self-efficacy (ß = .513), social support (ß = .230), information support (ß = .106), information consciousness (ß = -.097), information knowledge (ß = .067), information ethics (ß = -.053), hospital grade (ß = .118), marital status (ß = -.071) and age (ß = -.037) entered regression equation of clinical nurses' career success (all P < .05). SEM results showed that the career success was negatively correlated with demographic characteristics and positively correlated with social support and self-efficacy. CONCLUSION: Demographic characteristics, self-efficacy, social support and information literacy are the influencing factors of nurses' career success, which should be considered in the process of promoting nurses' career success. IMPLICATIONS FOR NURSING MANAGEMENT: Nursing managers need to acknowledge the significance of nurses' career success both for the realization of their own value and for the improvement of clinical nursing quality. They should encourage nurses to enhance self-efficacy and render more social support through incentive policies and foster nurses' information literacy through information technology training so as to improve their career success.


Assuntos
Motivação , Autoeficácia , China , Estudos Transversais , Humanos , Inquéritos e Questionários
6.
Oncogene ; 40(14): 2524-2538, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33674746

RESUMO

Gastric cancer (GC) is one of the most common malignant neoplasms. Invasion and metastasis are the main causes of GC-related deaths. Recently, kinesins were discovered to be involved in tumor development. The aim of this study was to elucidate the roles of kinesin superfamily protein 26A (KIF26A) in GC and its underlying molecular mechanism in regulating tumor invasion and metastasis. Using real-time quantitative polymerase chain reaction (qPCR) and immunohistochemistry (IHC), we showed that KIF26A expression was lower in GC tissues without lymph node metastasis (LNM) than in nontumorous gastric mucosa, and even lower in GC tissues with LNM than in GC tissues without LNM. Functional experiments showed that KIF26A inhibited migration and invasion of GC cells. We further identified focal-adhesion kinase (FAK), phosphatidylinositol 3-kinase regulatory subunit alpha (PI3KR1), VAV3, Rac1 and p21-activated kinase 2, and ß-PAK (PAK3) as downstream effectors of KIF26A in the focal-adhesion pathway, and we found that KIF26A could regulate FAK mRNA expression through inhibiting c-MYC by MAPK pathway. c-MYC could bind to the promoter of FAK and activate FAK transcription. Moreover, we found that KIF26A-mediated inactivation of the focal-adhesion pathway could reduce the occurrence of the epithelial-to-mesenchymal transition (EMT) by increasing expression of E-cadherin and reducing that of Snail. Luciferase assays and Western blotting revealed that miR-19a and miR-96 negatively regulate KIF26A. Finally, we found that decreased expression of KIF26A has been positively correlated with histological differentiation, Lauren classification, LNM, distal metastasis, and clinical stage, as well as poor survival in patients with GC. These data indicate that KIF26A could inhibit GC migration and invasion by regulating the focal-adhesion pathway and repressing the occurrence of EMT.


Assuntos
Quinase 1 de Adesão Focal/metabolismo , MicroRNAs/metabolismo , Neoplasias Gástricas/metabolismo , Animais , Linhagem Celular Tumoral , Modelos Animais de Doenças , Feminino , Xenoenxertos , Humanos , Masculino , Camundongos , Camundongos Endogâmicos NOD , Camundongos SCID , Metástase Neoplásica , Transdução de Sinais , Neoplasias Gástricas/patologia
7.
Front Surg ; 8: 797793, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-35111806

RESUMO

OBJECTIVE: This study aimed to investigate the effects of stellate ganglion block (SGB) through different approaches under guidance of ultrasound. METHODS: A total of 130 patients undergoing SGB in our hospital between February 2019 and February 2020 were enrolled as the research subjects. According to the random number table method, these subjects were divided into two groups: a modified 6th cervical vertebra (C6) group (n = 65) and a 7th cervical vertebra (C7) group (n = 65). Under the guidance of ultrasound, the subjects in the modified C6 group were punctured at the level of the C6 transverse process, and the subjects in the C7 group were punctured at the level of the C7 transverse process. The operation duration, number of puncture angle adjustments, block effects, and adverse reactions for SGB were compared between the two groups. RESULTS: The modified C6 group showed shorter SGB operation duration and a lower number of puncture angle adjustments than the C7 group, and the differences were statistically significant (P < 0.05). Horner Syndrome occurred in both groups after SGB. The incidence of adverse reactions in the modified C6 group was 4.62%, comprising 1 case of hoarseness and 2 cases of slowed pulse, while that in the C7 group was 6.15%, with 1 case of hoarseness and 3 cases of slowed pulse; the difference between the two groups was not statistically significant (P > 0.05). CONCLUSION: The operation duration for modified SGB guided by ultrasound puncturing at the C6 transverse process is shorter and requires fewer puncture angle adjustments than puncturing at the C7 transverse process; however, there is no significant difference between the incidence of adverse reactions or the blocking effects of the two methods.

8.
Oxid Med Cell Longev ; 2020: 1404915, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32587656

RESUMO

Aseptic loosening caused by wear particles is one of the common complications after total hip arthroplasty. We investigated the effect of the recombinant protein ephB4-Fc (erythropoietin-producing human hepatocellular receptor 4) on wear particle-mediated inflammatory response. In vitro, ephrinB2 expression was analyzed using siRNA-NFATc1 (nuclear factor of activated T-cells 1) and siRNA-c-Fos. Additionally, we used Tartrate-resistant acid phosphatase (TRAP) staining, bone pit resorption, Enzyme-linked immunosorbent assay (ELISA), as well as ephrinB2 overexpression and knockdown experiments to verify the effect of ephB4-Fc on osteoclast differentiation and function. In vivo, a mouse skull model was constructed to test whether the ephB4-Fc inhibits osteolysis and inhibits inflammation by micro-CT, H&E staining, immunohistochemistry, and immunofluorescence. The gene expression of ephrinB2 was regulated by c-Fos/NFATc1. Titanium wear particles activated this signaling pathway to the promoted expression of the ephrinB2 gene. However, ephrinB2 protein can be activated by osteoblast membrane receptor ephB4 to inhibit osteoclast differentiation. In in vivo experiments, we found that ephB4 could regulate Ti particle-mediated imbalance of OPG/RANKL, and the most important finding was that ephB4 relieved the release of proinflammatory factors. The ephB4-Fc inhibits wear particle-mediated osteolysis and inflammatory response through the ephrinB2/EphB4 bidirectional signaling pathway, and ephrinB2 ligand is expected to become a new clinical drug therapeutic target.


Assuntos
Efrina-B2/metabolismo , Mediadores da Inflamação/metabolismo , Osteoprotegerina/metabolismo , Ligante RANK/metabolismo , Receptor EphB4/farmacologia , Proteínas Recombinantes/farmacologia , Transdução de Sinais , Titânio/farmacologia , Actinas/metabolismo , Animais , Reabsorção Óssea/patologia , Diferenciação Celular/efeitos dos fármacos , Feminino , Humanos , Interleucina-1beta/metabolismo , Interleucina-6/metabolismo , Camundongos Endogâmicos C57BL , Fatores de Transcrição NFATC/metabolismo , Osteoblastos/efeitos dos fármacos , Osteoblastos/metabolismo , Osteoclastos/efeitos dos fármacos , Osteoclastos/metabolismo , Osteogênese/efeitos dos fármacos , Osteólise/patologia , Proteínas Proto-Oncogênicas c-fos/metabolismo , Fator de Necrose Tumoral alfa/metabolismo
9.
J Cell Mol Med ; 24(5): 3203-3216, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-32053272

RESUMO

Aseptic loosening caused by wear particles is a common complication after total hip arthroplasty. We investigated the effect of the quercetin on wear particle-mediated macrophage polarization, inflammatory response and osteolysis. In vitro, we verified that Ti particles promoted the differentiation of RAW264.7 cells into M1 macrophages through p-38α/ß signalling pathway by using flow cytometry, immunofluorescence assay and small interfering p-38α/ß RNA. We used enzyme-linked immunosorbent assays to confirm that the protein expression of M1 macrophages increased in the presence of Ti particles and that these pro-inflammatory factors further regulated the imbalance of OPG/RANKL and promoted the differentiation of osteoclasts. However, this could be suppressed, and the protein expression of M2 macrophages was increased by the presence of the quercetin. In vivo, we revealed similar results in the mouse skull by µ-CT, H&E staining, immunohistochemistry and immunofluorescence assay. We obtained samples from patients with osteolytic tissue. Immunofluorescence analysis indicated that most of the macrophages surrounding the wear particles were M1 macrophages and that pro-inflammatory factors were released. Titanium particle-mediated M1 macrophage polarization, which caused the release of pro-inflammatory factors through the p-38α/ß signalling pathway, regulated OPG/RANKL balance. Macrophage polarization is expected to become a new clinical drug therapeutic target.


Assuntos
Osteonecrose/tratamento farmacológico , Osteoprotegerina/genética , Quercetina/farmacologia , Ligante RANK/genética , Proteínas Quinases p38 Ativadas por Mitógeno/genética , Animais , Artroplastia de Quadril/efeitos adversos , Diferenciação Celular/efeitos dos fármacos , Polaridade Celular/efeitos dos fármacos , Regulação da Expressão Gênica no Desenvolvimento/efeitos dos fármacos , Humanos , Macrófagos/efeitos dos fármacos , Camundongos , Osteoclastos/efeitos dos fármacos , Osteonecrose/induzido quimicamente , Osteonecrose/genética , Osteonecrose/patologia , Células RAW 264.7 , Crânio/efeitos dos fármacos , Crânio/crescimento & desenvolvimento , Crânio/patologia , Titânio/efeitos adversos
10.
J Orthop Surg Res ; 14(1): 13, 2019 Jan 10.
Artigo em Inglês | MEDLINE | ID: mdl-30630533

RESUMO

OBJECTIVES: To introduce a new method of pelvic incidence (PI) measurement based on three-dimensional (3D) pelvic models reconstructed from CT images and to report the normal distribution of PI in normal pelvic anatomy. METHODS: CT images of 320 subjects with normal pelvic anatomy who visited the Radiology Department between 2006 and 2017 were retrospectively selected and saved in Digital Imaging and Communications in Medicine (DICOM) format. A computerized method was employed to determine the bony landmarks required for the measurement of PI. To quantify the method's accuracy and reliability, the intraclass correlation coefficient (ICC) was calculated. A subgroup of 30 DICOM files was randomly selected to perform a validation study. Three independent testers performed all procedures. All measurements were performed twice independently by the three testers on all 10 subjects with an interval of 2 weeks. Independent samples t tests were used to identify statistically significant differences in the PI value between sexes. Pearson correlation coefficient was employed to determine the relationship between PI and age. RESULTS: PI measurement using the new method resulted in an excellent intraobserver reliability (0.9612, range 0.8917-0.9893; p < 0.001) and interobserver reliability (0.9867, range 0.9611-0.9964; p < 0.001). PI was significantly different between sexes, with larger PI in women (p = 0.019). PI was significantly larger in the 40-80-year age group (45.94 ± 9.08°) than the < 40-year age group (43.50 ± 7.39°). We did not find any linear correlation between PI and age in the male (r = 0.140, p = 0.105) or female subgroup (r = 0.119, p = 0.107). A weak correlation between PI and age overall was observed (r = 0.142, p = 0.011). CONCLUSION: Accurate PI measurement could be achieved by a CT data-based 3D pelvic model.


Assuntos
Modelos Anatômicos , Ossos Pélvicos/diagnóstico por imagem , Adulto , Idoso , Idoso de 80 Anos ou mais , Envelhecimento/patologia , Feminino , Humanos , Imageamento Tridimensional/métodos , Masculino , Pessoa de Meia-Idade , Variações Dependentes do Observador , Ossos Pélvicos/anatomia & histologia , Reprodutibilidade dos Testes , Estudos Retrospectivos , Caracteres Sexuais , Tomografia Computadorizada por Raios X/métodos , Adulto Jovem
11.
J Orthop Surg Res ; 13(1): 59, 2018 Mar 20.
Artigo em Inglês | MEDLINE | ID: mdl-29554920

RESUMO

Pelvic incidence has become one of the most important sagittal parameters in spinal surgery. Despite its great importance, pelvic incidence can vary from 33° to 85° in the normal population. The reasons for this great variability in pelvic incidence remain unexplored. The objective of this article is to present some possible interpretations for the great variability in pelvic incidence under both normal and pathological conditions and to further understand the determinants of pelvic incidence from the perspective of the functional requirements for bipedalism and genetic backgrounds via a literature review. We postulate that both pelvic incidence and pelvic morphology may be genetically predetermined, and a great variability in pelvic incidence may already exist even before birth. This great variability may also serve as a further reminder that the sagittal profile, bipedal locomotion mode, and genetic background of every individual are unique and specific, and clinicians should avoid making universally applying broad generalizations of pelvic incidence. Although PI is an important parameter and there are many theories behind its variability, we still do not have clear mechanistic answers.


Assuntos
Determinismo Genético , Ossos Pélvicos/anatomia & histologia , Animais , Evolução Biológica , Humanos , Locomoção/fisiologia , Lordose/patologia , Ossos Pélvicos/crescimento & desenvolvimento , Ossos Pélvicos/patologia , Equilíbrio Postural/fisiologia , Coluna Vertebral/patologia , Coluna Vertebral/cirurgia
12.
Tumour Biol ; 39(4): 1010428317697551, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28381163

RESUMO

The protocadherin 7 is a member of the protocadherin family that expressed aberrantly in many types of human cancers. However, its expression, function, and underlying mechanisms are little known in gastric cancer. In this study, we detected protocadherin 7 expression in gastric cancer tissues and non-tumorous gastric mucosa tissues by real-time quantitative polymerase chain reaction and immunohistochemistry. The association of protocadherin 7 expression with the clinicopathological characteristics and the prognosis was subsequently analyzed. MTS ((3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium)) and transwell assays were performed to assess the effect of protocadherin 7 on proliferation, migration, and invasion in gastric cancer cell lines. Moreover, real-time quantitative polymerase chain reaction and western blot were used to detect the expression of epithelial-mesenchymal transition markers. Protocadherin 7 expression was decreased gradiently from normal tissue to gastric cancer, especially in gastric cancer tissue with lymph node metastasis. Low expression of protocadherin 7 was significantly associated with Lauren's classification ( p = 0.0005), lymph node metastases ( p = 0.0002), and tumor node metastasis stage ( p = 0.0221), as well as poor prognosis ( p < 0.05). Furthermore, down-regulation of protocadherin 7 in gastric cancer cell lines significantly increased their migration and invasion abilities (both p < 0.05), while it had no influence on the gastric cancer cell proliferation ( p > 0.05). Additionally, our results demonstrated that E-cadherin expression was down-regulated in gastric cancer cells with protocadherin 7 depletion. Our data indicated that protocadherin 7 may play important roles in the invasion and metastasis of gastric cancer, and protocadherin 7 could suppress cell migration and invasion through E-cadherin inhibition. Protocadherin 7 can serve as a novel biomarker for diagnostic and prognosis in patients with gastric cancer.


Assuntos
Caderinas/fisiologia , Movimento Celular , Neoplasias Gástricas/patologia , Adulto , Idoso , Antígenos CD , Linhagem Celular Tumoral , Proliferação de Células , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Invasividade Neoplásica , Prognóstico , Protocaderinas
13.
Int J Clin Exp Pathol ; 10(9): 9627-9632, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-31966841

RESUMO

OBJECTIVE: Uterine adenomatoid tumors (UATs) are tubercle without significant clinical features. The study aims to summarize the clinicopathological characteristics of UATs to improve diagnostic accuracy. METHODS: Between January 2014 and December 2015, 4326 uterine specimens were collected from patients who received hysterectomy or myomectomy, of which 102 cases were pathologically confirmed as UATs. The clinical features, pathological parameters and immunohistochemical staining were analyzed. RESULTS: One hundred and two UATs were identified by gross and microscopic examination, which accounts for 2.4% of all the uterine tumors. UATs were usually located in the uterus myometrium, near the serosa or cornua. Most of them were solitary, without an enveloping membrane or clear demarcation. Microscopically, typical features were glandular structures and cavities with various sizes and shapes found within the hyperplastic smooth muscle tissues. Immunohistochemical staining showed that all tumors were positive for HBME-1 and CK (pan). Most of them were positive for CR (89.6%) and D2-40 (92.4%), negative for CD31 and CEA, while cast-off cells in glandular cavities and lymphocytes were positive for LCA. CONCLUSION: Adenomatoid tumors are not very rare in the uterus. The diagnosis of UATs can be improved by carefully gross and microscopic examination. Immnohistachemical staining is helpful for diagnosis and differential diagnosis of UATs.

14.
Oncotarget ; 6(35): 37458-70, 2015 Nov 10.
Artigo em Inglês | MEDLINE | ID: mdl-26460960

RESUMO

Vascular Endothelial Growth Factor C (VEGF-C) has critical roles in angiogenesis in human cancers; however, the underlying mechanisms regulating VEGF-C expression remain largely unknown. In the present study, VEGF-C protein expression and the density of blood vessels or lymphatic vessels were determined by immunohistochemistry in 103 cases of gastric cancer tissues. Suppression of VEGF-C by miR-27b, miR-101 and miR-128 was investigated by luciferase assays, Western blot and ELISA. The miRNAs expression levels were detected in human gastric cancers by real-time quantitative PCR. Cell proliferation, migration and invasion assays were performed to assess the effect of miRNAs on gastric cancer cells and human umbilical vascular endothelial cells (HUVECs). Our data showed that high VEGF-C expression was significantly associated with increased tumor size, advanced TNM classification and clinical stage, higher microvessel density (MVD) and lymphatic density (LVD), as well as poor survival in patients with gastric cancer. Furthermore, VEGF-C was found to be a direct target gene of miR-27b, miR-101, and miR-128. The expression levels of the three miRNAs were inversely correlated with MVD. Overexpression of miR-27b, miR-101, or miR-128 suppressed migration, proliferation activity, and tube formation in HUVECs by repressing VEGF-C secretion in gastric cancer cells. We conclude that miR-27b, miR-101 and miR-128 inhibit angiogenesis by down-regulating VEGF-C expression in gastric cancers.


Assuntos
MicroRNAs/metabolismo , Neovascularização Patológica , Neoplasias Gástricas/metabolismo , Fator C de Crescimento do Endotélio Vascular/metabolismo , Linhagem Celular Tumoral , Movimento Celular , Proliferação de Células , Regulação para Baixo , Feminino , Gastrectomia , Regulação Neoplásica da Expressão Gênica , Células Endoteliais da Veia Umbilical Humana/metabolismo , Humanos , Estimativa de Kaplan-Meier , Vasos Linfáticos/metabolismo , Vasos Linfáticos/patologia , Masculino , MicroRNAs/genética , Microvasos/metabolismo , Microvasos/patologia , Pessoa de Meia-Idade , Invasividade Neoplásica , Estadiamento de Neoplasias , Transdução de Sinais , Neoplasias Gástricas/irrigação sanguínea , Neoplasias Gástricas/genética , Neoplasias Gástricas/mortalidade , Neoplasias Gástricas/patologia , Neoplasias Gástricas/cirurgia , Fatores de Tempo , Transfecção , Resultado do Tratamento , Carga Tumoral , Fator C de Crescimento do Endotélio Vascular/genética
15.
Biosystems ; 120: 1-9, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24705245

RESUMO

Serotonin selective reuptake inhibitors (SSRIs) have been widely used as first-line drugs in the treatment of a range of depressive and anxiety disorders. Recently, clinical studies found that this class of agents also shows significant efficacy in promoting neurogenesis, neuroplasticity and neurorecovery following stroke. Here, we attempt to elucidate molecular mechanism and biological implication underlying the SSRI-mediated neurorecovery. In the procedure, a comprehensive protein-drug interactome (PDI) was constructed for various SSRIs and their major metabolites as well as a group of control drugs across a large panel of human neuroproteins via a high-throughput molecular docking approach. The obtained PDI was then analyzed at systematic level to extract unexpected targets for SSRIs/metabolites. Biological network analysis and gene ontology (GO) enrichment solidified that the inferred targets have high potential to be directly or indirectly involved in diverse neural events, and further molecular dynamics (MD) simulation and post molecular mechanics-Poisson Boltzmann/surface area (MM-PB/SA) characterization revealed a stable complex architecture and high-affinity interaction between the targets and SSRIs/metabolites. Specifically, two human proteins, i.e. neurogenic locus notch homolog protein 1 (NOTCH 1) and Rho-associated protein kinase 1 (ROCK 1), were suggested as promising regulators in the SSRI-mediated neurorecovery, which can be targeted efficiently by fluoxetine and paroxetine, respectively, as well as other SSRIs and metabolites.


Assuntos
Simulação de Acoplamento Molecular , Receptor Notch1/metabolismo , Recuperação de Função Fisiológica/fisiologia , Inibidores Seletivos de Recaptação de Serotonina/metabolismo , Reabilitação do Acidente Vascular Cerebral , Quinases Associadas a rho/metabolismo , Humanos , Modelos Biológicos , Recuperação de Função Fisiológica/efeitos dos fármacos , Inibidores Seletivos de Recaptação de Serotonina/farmacologia
17.
Sichuan Da Xue Xue Bao Yi Xue Ban ; 39(1): 63-5, 83, 2008 Jan.
Artigo em Chinês | MEDLINE | ID: mdl-18390202

RESUMO

OBJECTIVE: To investigate the effect of Janus kinase (JAK) inhibitor AG490 on invasion and metastasis of the human breast cancer cell MDA-MB-231, and to explore the regulating role of JAK-STAT3 signaling pathway when the breast cancer occurs to the invasiveness and metastasis. METHODS: The human breast cancer cell MDA-MB-231 was used as the research object, and AG490 was as Janus kinase inhibitor. The adhesion of MDA-MB-231 cell attaching to matrigel was measured with MTT assay. The invasion and metastasis potential were evaluated with transwell chamber. The P-STAT3 protein in cell was detected by Western-blot. RESULTS: Janus kinase inhibitor AG490 could make that the expression of P-STAT3 in human breast cancer cell MDA-MB-231 became weak, and that the abilities of adhesion, invasion and metastasis were also dropping down as compared with the control group (P < 0.01). CONCLUSION: JAK-STAT3 signaling pathway participates in regulating the invasion and metastasis of human breast cancer. Inhibiting the activation of JAK-STAT3 signaling pathway can suppress the invasion and metastasis of human breast cancer.


Assuntos
Antineoplásicos/farmacologia , Neoplasias da Mama/metabolismo , Janus Quinases/antagonistas & inibidores , Tirfostinas/farmacologia , Adesão Celular , Linhagem Celular Tumoral , Humanos , Janus Quinases/metabolismo , Metástase Neoplásica , Fator de Transcrição STAT3/metabolismo , Transdução de Sinais
18.
Zhongguo Wei Zhong Bing Ji Jiu Yi Xue ; 17(3): 177-9, 2005 Mar.
Artigo em Chinês | MEDLINE | ID: mdl-15760535

RESUMO

OBJECTIVE: To study the changes in humoral immunological function and their clinical significance in cerebral hemorrhage. METHODS: Among 115 cases of cerebral hemorrhage, there was low volume bleeding in 39 case, middle volume in 37 cases, and large volume in 39 cases. The ratios of CD19+-CD25+ and CD19+-CD25-B lymphocytes were determined by flow cytometry, and the content of IgA, IgG, IgM, and complement C3 were determined with scattered turbidimetry. The changes in humoral immunological function were compared in patients with different degrees of hemorrhage, and their variation in acute and recovery stages of disease were respectively assessed. RESULTS: The ratios of CD19+-CD25+and CD19+-CD25-B lymphocyte, and the levels of IgA, IgG, IgM, and C3 were higher than those of controls (all P<0.05). The ratios of CD19+-CD25+ and CD19+-CD25- B lymphocyte, and the contents of IgA, IgG,IgM and C3 were increased with the increase in amount of hemorrhage(all P<0.05). The ratios of CD19+-CD25+ and CD19+-CD25-B lymphocytes in recovery stage were lower than those in acute stage (all P<0.05). CONCLUSION: There are activations of humoral immunological functions in cerebral hemorrhage. The more abundant in hemorrhage and the severer in disease, the more predominant in the changes in humoral immunological functions.


Assuntos
Formação de Anticorpos/imunologia , Hemorragia Cerebral/imunologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Complemento C3/imunologia , Feminino , Humanos , Imunoglobulina A/imunologia , Imunoglobulina G/imunologia , Imunoglobulina M/imunologia , Masculino , Pessoa de Meia-Idade
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...