Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 33
Filtrar
1.
World J Clin Cases ; 12(12): 2122-2127, 2024 Apr 26.
Artigo em Inglês | MEDLINE | ID: mdl-38680266

RESUMO

BACKGROUND: Crossed renal ectopia (CRE) occurs when one kidney crosses the midline from the primary side to the contralateral side while the ureter remains on the primary side. Rectal cancer, one of the most common malignant tumors of the digestive tract, refers to cancer from the dentate line to the rectosigmoid junction. The concurrent presentation of CRE alongside rectal cancer is an uncommon clinical observation. CASE SUMMARY: Herein, we report a 69-year-old male patient with rectal cancer who was diagnosed with CRE via computed tomography during hospitalization. Following thorough preoperative evaluations, the patient underwent Dixon surgery. CONCLUSION: We performed laparoscopic radical resection of rectal cancer and adequate lymph node removal in a patient with CRE with no postoperative discomfort.

2.
Med Biol Eng Comput ; 62(3): 843-852, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38052881

RESUMO

This study aimed to compare the properties and safety of self-designed plates in type II traumatic spondylolisthesis of the axis with those of traditional devices via finite element (FE) analysis. We constructed a hangman's fracture FE model from the occipital bone (C0) level to the C3 level. Then, FE models were constructed for the following four fixation systems: an anterior cervical L-shaped plate with four vertebral screws (4-ACLP), or six screws (6-ACLP), an anterior cervical orion plate (ACOP), and a posterior fixation system. A preloaded compressive force of 50 N and a moment of 1.5 N·m were applied to each model under six working conditions. The mobility of the C2/3 segment decreased significantly in four fixation models. In the Mises stress cloud diagram, 4-ACLP showed a better stress distribution in both the bone graft and fixation system than 6-ACLP and ACOP. The resultant force of 4-ACLP was lower but higher than ACOP in axial force. Additionally, the cage in the 4-ACLP configuration experienced the highest stress in the six working conditions. Hence, this novel self-designed plate has the potential to mitigate the operational difficulties, provide sufficient stability, reduce the risk of plate or screw fractures, and improve bone fusion.


Assuntos
Fraturas Ósseas , Fraturas da Coluna Vertebral , Espondilolistese , Humanos , Vértebras Cervicais/cirurgia , Análise de Elementos Finitos , Espondilolistese/cirurgia , Fraturas da Coluna Vertebral/cirurgia , Parafusos Ósseos , Fixação Interna de Fraturas , Placas Ósseas , Fenômenos Biomecânicos
3.
Front Psychiatry ; 14: 1187360, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37860165

RESUMO

Background: Bipolar disorder and metabolic syndrome are both associated with the expression of immune disorders. The current study aims to find the effective diagnostic candidate genes for bipolar affective disorder with metabolic syndrome. Methods: A validation data set of bipolar disorder and metabolic syndrome was provided by the Gene Expression Omnibus (GEO) database. Differentially expressed genes (DEGs) were found utilizing the Limma package, followed by weighted gene co-expression network analysis (WGCNA). Further analyses were performed to identify the key immune-related center genes through function enrichment analysis, followed by machine learning-based techniques for the construction of protein-protein interaction (PPI) network and identification of the Least Absolute Shrinkage and Selection Operator (LASSO) and Random Forest (RF). The receiver operating characteristic (ROC) curve was plotted to diagnose bipolar affective disorder with metabolic syndrome. To investigate the immune cell imbalance in bipolar disorder, the infiltration of the immune cells was developed. Results: There were 2,289 DEGs in bipolar disorder, and 691 module genes in metabolic syndrome were identified. The DEGs of bipolar disorder and metabolic syndrome module genes crossed into 129 genes, so a total of 5 candidate genes were finally selected through machine learning. The ROC curve results-based assessment of the diagnostic value was done. These results suggest that these candidate genes have high diagnostic value. Conclusion: Potential candidate genes for bipolar disorder with metabolic syndrome were found in 5 candidate genes (AP1G2, C1orf54, DMAC2L, RABEPK and ZFAND5), all of which have diagnostic significance.

4.
Front Neurol ; 14: 1189746, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37305753

RESUMO

Background: Patients with comorbid schizophrenia, depression, drug use, and multiple psychiatric diagnoses have a greater risk of carotid revascularization following stroke. The gut microbiome (GM) plays a crucial role in the attack of mental illness and IS, which may become an index for the diagnosis of IS. A genomic study of the genetic commonalities between SC and IS, as well as its mediated pathways and immune infiltration, will be conducted to determine how schizophrenia contributes to the high prevalence of IS. According to our study, this could be an indicator of ischemic stroke development. Methods: We selected two datasets of IS from the Gene Expression Omnibus (GEO), one for training and the other for the verification group. Five genes related to mental disorders and GM were extracted from Gene cards and other databases. Linear models for microarray data (Limma) analysis was utilized to identify differentially expressed genes (DEGs) and perform functional enrichment analysis. It was also used to conduct machine learning exercises such as random forest and regression to identify the best candidate for immune-related central genes. Protein-protein interaction (PPI) network and artificial neural network (ANN) were established for verification. The receiver operating characteristic (ROC) curve was drawn for the diagnosis of IS, and the diagnostic model was verified by qRT-PCR. Further immune cell infiltration analysis was performed to study the IS immune cell imbalance. We also performed consensus clustering (CC) to analyze the expression of candidate models under different subtypes. Finally, miRNA, transcription factors (TFs), and drugs related to candidate genes were collected through the Network analyst online platform. Results: Through comprehensive analysis, a diagnostic prediction model with good effect was obtained. Both the training group (AUC 0.82, CI 0.93-0.71) and the verification group (AUC 0.81, CI 0.90-0.72) had a good phenotype in the qRT-PCR test. And in verification group 2 we validated between the two groups with and without carotid-related ischemic cerebrovascular events (AUC 0.87, CI 1-0.64). Furthermore, we investigated cytokines in both GSEA and immune infiltration and verified cytokine-related responses by flow cytometry, particularly IL-6, which played an important role in IS occurrence and progression. Therefore, we speculate that mental illness may affect the development of IS in B cells and IL-6 in T cells. MiRNA (hsa-mir-129-2-3p, has-mir-335-5p, and has-mir-16-5p) and TFs (CREB1, FOXL1), which may be related to IS, were obtained. Conclusion: Through comprehensive analysis, a diagnostic prediction model with good effect was obtained. Both the training group (AUC 0.82, CI 0.93-0.71) and the verification group (AUC 0.81, CI 0.90-0.72) had a good phenotype in the qRT-PCR test. And in verification group 2 we validated between the two groups with and without carotid-related ischemic cerebrovascular events (AUC 0.87, CI 1-0.64). MiRNA (hsa-mir-129-2-3p, has-mir-335-5p, and has-mir-16-5p) and TFs (CREB1, FOXL1), which may be related to IS, were obtained.

5.
Medicine (Baltimore) ; 101(36): e30381, 2022 Sep 09.
Artigo em Inglês | MEDLINE | ID: mdl-36086744

RESUMO

BACKGROUND: Increasing studies have shown that Chinese medicine combined with acupuncture has a significant effect on chronic urticaria, which can treat both symptoms and root causes. This meta-analysis aims to compare the efficacy and safety differences between acupuncture combined with conventional Western medicine, so as to provide guidance for the clinical treatment of chronic urticaria. METHODS: We searched Pubmed, Embase, Cochrane Library, CNKI, Wanfang, CQVIP, and CBM from the establishment of the database to August 2021. We included randomized controlled trial study that the experimental group was acupuncture combined with traditional Chinese medicine, while the control group was treated with conventional Western medicine. We excluded repeated publication, researches without full text, incomplete information, or inability to conduct data extraction and animal experiments, reviews, and systematic reviews. STATA 15.1 was used to analyze the data. RESULTS: The pooled results show that total effective rate of acupuncture combined with traditional Chinese medicine group was significantly higher than that in the conventional Western medicine group (ratio rate [RR] = 1.29, 95% confidence interval [CI]: 1.2-1.38). Additionally, the pooled results show that Urticaria Activity Score (standardized mean difference = -1.51, 95% CI: -2.24 to -0.78) and pruritus score (standardized mean difference = -1.09, 95% CI: -1.71 to -0.47) of acupuncture combined with traditional Chinese medicine group was significantly lower than that in conventional Western medicine group, while there is no significant difference in wheal score between acupuncture combined with traditional Chinese medicine group and conventional Western medicine group. Importantly, the pooled results show that recurrence rate (RR = 0.35, 95% CI: 0.19-0.64) and the incidence of adverse events (RR = 0.27, 95% CI: 0.10-0.75) of acupuncture combined with traditional Chinese medicine group were all significantly lower than that in conventional Western medicine group. CONCLUSION: Our research results found that traditional Chinese medicine combined with acupuncture has a more significant effect than conventional Western medicine and can significantly reduce the recurrence rate and the incidence of adverse reactions. The application of traditional Chinese medicine combined with acupuncture in the treatment of chronic urticaria should be further promoted.


Assuntos
Terapia por Acupuntura , Urticária Crônica , Medicamentos de Ervas Chinesas , Urticária Crônica/terapia , Terapia Combinada/efeitos adversos , Humanos , Medicina Tradicional Chinesa
6.
Exp Ther Med ; 24(4): 640, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-36160877

RESUMO

Melanoma, which evolves from melanocytes, is the most malignant skin cancer and is highly fatal, although it only accounts for 4% of all skin cancers. Numerous studies have demonstrated that melanoma has a large tumor mutational burden, which means that melanoma has great potential to achieve immune evasion. Tumor-associated macrophages (TAMs) are an important component of both the immune system and tumor microenvironment. Several studies have demonstrated their double-edged sword effects on melanoma. The present review focuses on the role of TAMs in melanoma development, including regulation of proliferation, invasion, metastasis, angiogenesis and chemical resistance of melanoma. Furthermore, the existing mechanisms of action of the TAM-targeting treatments for melanoma are reviewed. More broadly, the weak points of existing research and the direction of future research are finally identified and described.

7.
Medicine (Baltimore) ; 101(29): e29675, 2022 Jul 22.
Artigo em Inglês | MEDLINE | ID: mdl-35866789

RESUMO

BACKGROUND: The impact of Tuina on neonatal jaundice is not yet comprehensively understood, and its clinical application is rather limited. This study systematically assessed the relevant literature and conducted a meta-analysis to study the influence of Tuina on neonatal jaundice and provide convincing clinical evidence for promoting its clinical application. METHODS: We searched Pubmed, Embase, Cochrane Library, CNKI, Wanfang, CQVIP, and CBM from the establishment of the database up to July 2021. Studies that are randomized controlled trials were included. However, duplicate publications; manuscripts with no full text, incomplete information, or inability to extract data; animal experiments; and reviews and systematic reviews were excluded. STATA 15.1 was used to analyze the data. RESULTS: The pooled results showed that compared with the treatment of neonatal jaundice solely with blue light, Tuina combined with blue light significantly improved the total effective rate and frequency of defecation on days 1, 2, 3, 4, and 5 and significantly decreased the traditional Chinese medicine syndrome score; the third serum total bilirubin on days 3, 4, and 7; and duration of jaundice. Moreover, the incidence of adverse events in neonatal jaundice treated with Tuina combined with blue light was significantly lower than that with blue light alone. CONCLUSION: Tuina combined with blue light for treating neonatal jaundice can increase the effect of clinical treatment and reduce the adverse events caused by blue light therapy. Thus, the clinical application of traditional Chinese medicine Tuina in neonatal jaundice should be further promoted.


Assuntos
Icterícia Neonatal , Icterícia , Humanos , Recém-Nascido , Icterícia/terapia , Icterícia Neonatal/terapia , Medicina Tradicional Chinesa/métodos , Fototerapia , Síndrome
8.
Int J Nurs Sci ; 9(1): 71-78, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-35079607

RESUMO

OBJECTIVES: To investigate why patients with terminal illness and their families in Shanghai choose the hospice ward and their decision-making process. METHODS: This was a mixed-method study consisting of a cross-sectional survey and a descriptive qualitative study. Medical decision-makers for patients hospitalized in hospice wards were recruited between September 2019 and July 2021. A medical decision-maker is a family member who makes medical decisions for a patient. All 146 participants completed a self-developed 10-item questionnaire that included five items about their demographic characteristics and five items about the decision-making process. The semi-structured interviews were conducted with nine participants to understand the family's decision-making process when they chose a hospice ward. The interviews were analyzed using qualitative content analysis. RESULTS: The mean age of the 146 participants was 57.6 years old. Of the decision-makers, 56.85% were the patients' children. Family-dominated discussions involving other family members were the main decision-making mode (84.93%). Patient participation in the decision-making process was reported in 43.15% of families. The participation of doctors (17.81%) and nurses (2.05%) were reported in a small number of families. The most common reason for choosing the hospice ward was the inability to find any other hospital for the patients (82.19%). The most common ways to learn about the service were neighbors and friends (38.36%) and social media (28.77%). Two themes and six categories emerged from the interviews. The first theme was reasons for choosing hospice wards. The reasons included being unable to care for the patients at home, staying in a hospice ward could reduce the psychological stress for home care, being unable to be admitted into tertiary/secondary hospitals, and thinking a hospice ward was a suitable place for the family. The second theme was the decision process of choosing a hospice ward. This theme included the following two categories, i.e., ways to learn about the hospice ward and family-discussion decision mode. CONCLUSION: To most families having dying patients, a hospice ward is a reasonable and balanced choice after the families experience huge care stress and practical difficulties. The participation of patients should be encouraged in the family discussion so that their wishes can be known. More efforts will be needed to guide the families with dying patients to make reasonable medical choices. Social media can be a good way to improve public awareness of hospice services in the future. Meanwhile, healthcare providers should be more involved in the decision-making process.

9.
Acta Bioeng Biomech ; 24(2): 187-193, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-38314461

RESUMO

PURPOSE: A three-dimensional finite element model of the lower cervical spine was established to evaluate the biomechanical stability and stress distribution of the new lower cervical interzygapophyseal fusion device (IZFD) developed by ourselves under different construct. The aim of this study was to provide theoretical basis for further clinical application. METHODS: A normal fresh cadaveric specimen (male, 35 years old) was used to establish an intact three-dimensional finite element model of C3-C6. On this basis, the comparative finite element models of the lateral mass screw rod (LMSR) system and LMSR+IZFD were established. Only C4-C5 is fixed in the lateral mass. The range of motion (ROM) and stress distribution in the flexion,extension, lateral bending and rotation of the C4-C5 segment under the three constructs were analyzed. RESULTS: The ROM and stress distribution of the three-dimensional finite element model under load construct were within a reasonable range, which proved the validity and reliability of the model. The ROM and stress distribution of C4-C5 segment was significantly decreased in both LMSR and LMSR+IZFD constructs than those in the intact construct. The ROM and stresss distribution were even smaller in LMSR+IZFD construct than in LMSR construct. CONCLUSIONS: The IZFD combined with LMSR system can provide satisfactory stability for the lower cervical spine, and the IZFD can further improve the fixation effect of the LMSR system.

10.
Int J Exp Pathol ; 102(4-5): 200-208, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-34709686

RESUMO

MicroRNAs (miRNAs or miRs) serve essential roles in the pathogenic process of spinal cord injury (SCI). The present study investigated the role of miR-378-3p and autophagy-related 12 (ATG12) in SCI. RT-qPCR was used to detect the mRNA expression levels of miR-378-3p and ATG12. Cell viability and membrane integrity were evaluated using CCK-8 and LDH assays. For the analysis of the interaction between miR-378-3p and ATG12, a dual-luciferase reporter assay was conducted. The hindlimb function of rats was detected with the Basso, Beattie and Bresnahan score, and the motor deficit index score was used to evaluate nerve function. Using these approaches, it was identified that miR-378-3p expression was downregulated, while that of ATG12 was upregulated in SCI tissues and in cells exposed to hypoxia. Hypoxia repressed the expression of miR-378-3p via hypoxia-inducible factor 1-α. The overexpression of miR-378-3p exerted anti-apoptotic effects on nerve cells by directly repressing ATG12. The infusion of miR-378-3p improved hindlimb motor function and the neurological functions of rats with contusion SCI, which contributed to amelioration of functional deficits and the relief of contusion SCI. Therefore, it was concluded that upregulated expression of miR-378-3p in PC12 or N2A cells repressed the apoptosis of nerve cells, and the administration of miR-378-3p in model rats with contusion SCI improved neurological and motor functions.


Assuntos
Proteína 7 Relacionada à Autofagia/metabolismo , MicroRNAs/metabolismo , Traumatismos da Medula Espinal/metabolismo , Animais , Apoptose , Linhagem Celular , Sobrevivência Celular , Lipopolissacarídeos/farmacologia , Camundongos , Neurônios , Ratos , Traumatismos da Medula Espinal/induzido quimicamente , Traumatismos da Medula Espinal/patologia
11.
Medicine (Baltimore) ; 100(31): e26785, 2021 Aug 06.
Artigo em Inglês | MEDLINE | ID: mdl-34397828

RESUMO

BACKGROUND: There are still controversies between the curative effect of acupuncture combined with cupping therapy and western medicine for post-herpetic neuralgia (PHN). Our meta-analysis fully incorporates the research of acupuncture combined with cupping therapy versus Western medicine for PHN, aiming to explore the difference in the efficacy of the 2 therapies, so as to provide guidance for clinical treatment. METHODS: We searched PubMed, Embase, Cochrane Library, CNKI, Wanfang, CQVIP, CBM, from establishment of the database to September, 2020. Include studies that are clearly defined as PHN or herpes zoster, and exclude duplicate publications; studies with no full text, incomplete information, or inability to extract data; the definition of exposure is quite different from most literature; animal experiments. RESULTS: The total effective rate (relative ratio [RR] = 1.21, 95% confidence interval [CI]: 1.12-1.31) and the rate of remarkable effect (RR = 1.46, 95% CI: 1.30-1.63) of acupuncture and moxibustion combined with cupping in the treatment of PHN were significantly higher than that of conventional western medicine. The visual analogue scale score of acupuncture and moxibustion combined with cupping for PHN was significantly lower than that of conventional western medicine treatment (WMD = -1.77, 95% CI [-2.79, -0.75]). In addition, acupuncture and moxibustion combined with cupping therapy significantly reduced the occurrence of PHN compared with conventional western medicine treatment after treatment of acute herpes zoster (RR = 0.30, 95% CI: 0.20-0.45). In order to explore the differences in the efficacy and preventive effects of different types of acupuncture and cupping therapy, we have further conducted a subgroup analysis. CONCLUSION: The effect of acupuncture and moxibustion combined with cupping in the treatment of PHN is significantly higher than that of conventional western medicine, and it can significantly prevent the occurrence of PHN. Chinese medicine should be used more widely in the treatment of PHN.


Assuntos
Terapia por Acupuntura/normas , Ventosaterapia/normas , Moxibustão/normas , Neuralgia Pós-Herpética/terapia , Terapia por Acupuntura/métodos , Ventosaterapia/métodos , Herpes Zoster/complicações , Humanos , Moxibustão/métodos , Neuralgia Pós-Herpética/etiologia
12.
Constr Build Mater ; 266: 120892, 2021 Jan 10.
Artigo em Inglês | MEDLINE | ID: mdl-33020684

RESUMO

This paper presents the results of long-term experiments performed on three timber-concrete composite (TCC) beams. An innovative fabricated steel plate connection system, which consists of screws and steel plates embedded in concrete slabs, was adopted in the TCC beam specimens. The adopted shear connection can provide dry-type connection for TCC beams. Steel plates were embedded in concrete slabs while the concrete slab was constructed in factories. The timber beam and concrete slab can be assembled together using screws at the construction site. In this experimental programme, the beam specimens were subjected to constant loading for 613 days in indoor uncontrolled environments. The influence of long-term loading levels and the number of shear connections on the long-term performance of TCC beams was investigated and discussed. The mid-span deflection, timber strain, and interface relative slip at the positions of both connections and beam-ends were recorded throughout the long-term tests. It was found the long-term deflection of the TCC beam increased by approximately 60% while the long-term loads were doubled. Under the influence of the variable temperature and humidity, the TCC specimens with 8 shear connections showed slighter fluctuations compared with the TCC beam with 6 shear connections. In the 613-day observation period, the maximum deflection increment recorded was 6.56 mm for the specimen with eight shear connections and 20% loading level. A rheological model consisting of two Kelvin bodies was employed to fit the curves of creep coefficients. The final deflections predicted of all specimens at the end of 50-year service life were 2.1~2.7 times the initial deflections caused by the applied loads. All beam specimens showed relative small increments in mid-span deflection, strain and relative slip over time without any degradations, demonstrating the excellent long-term performance of TCC beams using the innovative steel plate connection system, which is also easily fabricated.

13.
BMC Cardiovasc Disord ; 20(1): 381, 2020 08 20.
Artigo em Inglês | MEDLINE | ID: mdl-32819289

RESUMO

BACKGROUND: Evidence has shown that serum uric acid (UA) is associated with cognitive function, but this finding remains debatable. Serum UA is commonly elevated in patients with chronic heart failure (CHF), especially in men. However, the relationship between serum UA and cognitive function in CHF populations and stratified by sex are unclear. We aimed to examine whether serum UA was independently associated with cognitive function in CHF populations after controlling for demographic, medical and psychological variables and whether there was a sex difference in the association between serum UA and cognitive function among male and female CHF patients. METHODS: One hundred ninety-two hospitalized patients with CHF underwent an assessment of cognitive function using the Montreal Cognitive Assessment (MoCA) and the determination of serum UA. Hyperuricemia was defined as serum UA ≥7 mg/dl in men and ≥ 6 mg/dl in women. Multiple linear hierarchical regression analyses were conducted to examine the independent association between serum UA and cognitive function in CHF populations and stratified by sex. RESULTS: The mean serum UA concentration of participants was 7.3 ± 2.6 mg/dL. The prevalence of hyperuricemia was 54.7% (105 of 192) in CHF patients, 52.9% (64 of 121) in men, and 57.7% (41 of 71) in women. In the total sample, higher serum UA was associated with poorer cognitive function independent of demographic, medical and psychological variables (ß = - 0.130, ΔR2 = 0.014, p = 0.015). In sex-stratified groups, elevated serum UA was independently associated with worse cognitive function in men (ß = - 0.247, ΔR2 = 0.049, p = 0.001) but not in women (ß = - 0.005, ΔR2 = 0.000, p = 0.955). CONCLUSIONS: Higher serum UA is independently associated with poorer cognitive function in CHF populations after adjusting for confounding variables. Furthermore, elevated serum UA is independently related to worse performance on cognitive function in men but not in women. More longitudinal studies are needed to examine the association between serum UA and cognitive function in CHF populations and stratified by sex.


Assuntos
Transtornos Cognitivos/etiologia , Cognição , Insuficiência Cardíaca/complicações , Hiperuricemia/complicações , Ácido Úrico/sangue , Idoso , Idoso de 80 Anos ou mais , Biomarcadores/sangue , Doença Crônica , Transtornos Cognitivos/diagnóstico , Transtornos Cognitivos/psicologia , Estudos Transversais , Feminino , Insuficiência Cardíaca/diagnóstico , Insuficiência Cardíaca/fisiopatologia , Hospitalização , Humanos , Hiperuricemia/sangue , Hiperuricemia/diagnóstico , Masculino , Pessoa de Meia-Idade , Medição de Risco , Fatores de Risco , Fatores Sexuais , Volume Sistólico , Função Ventricular Esquerda
14.
Materials (Basel) ; 13(12)2020 Jun 16.
Artigo em Inglês | MEDLINE | ID: mdl-32560140

RESUMO

This paper presents an experimental evaluation of the fire resistance of glued-in rod timber joints using epoxy resin, with and without modification. A heat-resistant modified resin was designed by adding inorganic additives into the epoxy resin, aiming to improve the heat resistance. Joints that were made using the modified epoxy resin at room temperature showed a bearing capacity comparable to those with commercial epoxy resin. Twenty-one joint specimens with the modified epoxy resin and six with a commercial epoxy resin were tested in a fire furnace to evaluate the fire resistance. The main failure mode was the pull-out of the rod, which is typical in fire tests of this type of joints. As to the effects of the test parameters, this study considered the effects of adhesive types, sectional sizes, stress levels, and fireproof coatings. The test results showed that the fire resistance period of a joint can be evidently improved by modifying the resin and using the fireproof coating, as the improvements reached 73% and 35%, respectively, compared with the joint specimens with commercial epoxy resin. It was also found that, for all specimens, the fire resistance period decreased with an increase in the stress level and increased with an increase in the sectional sizes.

16.
Mol Med Rep ; 20(6): 5265-5271, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31702812

RESUMO

Vitamin D deficiency may lead to an increased risk of tuberculosis. In the present study, the effects of Mycobacterium tuberculosis (Mtb) infection on dendritic cells (DCs) derived from vitamin D­deficient mice or normal control mice were investigated. A vitamin D­deficient mouse model was established, and bone marrow­derived DCs (BMDCs) were isolated and treated with GM­CSF and interleukin (IL)­4 for 6 days, followed by an additional 24 h of treatment with Bacillus Calmette­Guérin (BCG). The expression levels of surface molecules of DCs, including integrin alpha­X and T­lymphocyte activation antigen CD86, were significantly increased by BCG in the vitamin D­deficient mice model group compared with the control group, while those of T­lymphocyte activation antigen CD80, major histocompatibility complex class I and major histocompatibility complex class II were significantly decreased. These changes were BCG concentration­dependent. In addition, the levels of IL­4, IL­6 and IL­10 in the BMDCs from the vitamin D­deficient mice were significantly decreased compared with the control mice, while the levels of tumor necrosis factor­α, IL­5, IL­2, IL­12 and interferon­Î³ were significantly increased. Furthermore, the expression levels of vitamin D receptor (VDR) and CYP27B1 protein in the BMDCs from the vitamin D­deficient mice were decreased compared with the control. BCG significantly increased the expression levels of VDR and CYP27B1 in the BMDCs. The DCs treated with BCG significantly induced the viability of CD4+ T lymphocytes. Therefore, BCG increases DCs and may enhance immunofunction, which may assist in preventing the risk of tuberculosis in patients with a vitamin D deficiency.


Assuntos
25-Hidroxivitamina D3 1-alfa-Hidroxilase/metabolismo , Vacina BCG/farmacologia , Proliferação de Células/efeitos dos fármacos , Células Dendríticas/efeitos dos fármacos , Receptores de Calcitriol/metabolismo , Deficiência de Vitamina D/metabolismo , Animais , Antígeno B7-1/metabolismo , Antígeno B7-2/metabolismo , Células da Medula Óssea/patologia , Linfócitos T CD4-Positivos/imunologia , Citocinas/metabolismo , Células Dendríticas/citologia , Células Dendríticas/imunologia , Células Dendríticas/metabolismo , Modelos Animais de Doenças , Antígenos de Histocompatibilidade Classe II/metabolismo , Interleucina-10 , Interleucina-4/metabolismo , Interleucina-6/metabolismo , Ativação Linfocitária/efeitos dos fármacos , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Mycobacterium tuberculosis/metabolismo , Tuberculose/imunologia , Vitamina D/metabolismo
17.
Chin Med J (Engl) ; 132(21): 2543-2549, 2019 Nov 05.
Artigo em Inglês | MEDLINE | ID: mdl-31652142

RESUMO

BACKGROUND: The effect of short-segment decompression/fusion versus long-segment decompression/fusion and osteotomy for Lenke-Silva type VI adult degenerative scoliosis (ADS) has not been clarified. This study aimed to compare the clinical and radiographic results of short-segment fusion vs. long-segment fusion and osteotomy for patients with Lenke-Silva type VI ADS. METHODS: Data of 28 patients who underwent spinal surgery for ADS from January 2012 to January 2014 in the General Hospital of Northern Theater Command were reviewed. Of the 28 patients, 12 received long-segment fusion and osteotomy and 16 received short-segment fusion. Radiographic imaging parameters and clinical outcomes, including the sagittal vertical axis (SVA), lumbar lordosis (LL) angle, pelvic tilt (PT), sacral slope (SS), the visual analog scale (VAS), Japanese Orthopedic Association (JOA), Oswestry disability index (ODI), and lumbar stiffness disability index (LSDI) scores, were recorded. The difference between groups was compared using the dependent t test or Chi-squared test. RESULTS: The Cobb and LL angles and SVA improved in both groups; however, PT and SS angles did not improve following short fusion. There were significant differences in the post-operative SVA (26.8 ±â€Š5.4 mm vs. 47.5 ±â€Š7.6 mm, t = -8.066, P < 0.001), PT (14.7 ±â€Š1.8° vs. 29.1 ±â€Š3.4°, t = -13.277, P < 0.001), and SS (39.8 ±â€Š7.2° vs. 26.1 ±â€Š3.3°, t = 6.175, P < 0.001) between the long and short fusion groups. All patients had improved ODI, JOA, and VAS scores post-operatively (all P < 0.001), with no significant difference between the groups (all P > 0.05). The post-operative LSDI score was 3.5 ±â€Š0.5 in the long fusion group, which was significantly higher than that of the short fusion group (1.4 ±â€Š0.7; P < 0.001). CONCLUSIONS: The clinical outcomes of patients with Lenke-Silva type VI ADS who underwent short-segment decompression/fusion were comparable to those of patients who underwent long-segment decompression/fusion and osteotomy despite poor correction of sagittal imbalance. Moreover, short-segment decompression/fusion showed a short operation time and reduced surgical trauma.


Assuntos
Osteotomia/métodos , Escoliose/cirurgia , Adulto , Idoso , Distribuição de Qui-Quadrado , Feminino , Humanos , Lordose/cirurgia , Vértebras Lombares/cirurgia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Escoliose/diagnóstico por imagem , Vértebras Torácicas/cirurgia
18.
Zhongguo Zhong Yao Za Zhi ; 42(6): 1118-1124, 2017 Mar.
Artigo em Chinês | MEDLINE | ID: mdl-29027426

RESUMO

Apocynum venetum belongs to apocynaceae and is a perennial medicinal plant, its stem is an important textile raw materials. The projection of potential geographic distribution of A. venetum has an important significance for the protection and sustainable utilization of the plant. This study was conducted to determine the potential geographic distribution of A. venetum and to project how climate change would affect its geographic distribution. The projection geographic distribution of A. venetum under current bioclimatic conditions in northern China was simulated using MaxEnt software based on species presence data at 44 locations and 19 bioclimatic parameters. The future distributions of A. venetum were also projected in 2050 and 2070 under the climate change scenarios of RCP2.6 and RCP8.5 described in 5th Assessment Report of the Intergovernmental Panel on Climate Change (IPCC). The result showed that min air temperature of the coldest month, annual mean air temperature, precipitation of the coldest quarter and mean air temperature of the wettest quarter dominated the geographic distribution of A. venetum. Under current climate, the suitable habitats of A. venetum is 11.94% in China, the suitable habitats are mainly located in the middle of Xinjiang, in the northern part of Gansu, in the southern part of Neimeng, in the northern part of Ningxia, in the middle and northern part of Shaanxi, in the southern part of Shanxi, in the middle and northern part of Henan, in the middle and southern part of Hebei, Shandong, Tianjin, in the southern part of Liaoning and part of Beijing. From 2050 to 2070, the model outputs indicated that the suitable habitats of A. venetum would decrease under the climate change scenarios of RCP2.6 and RCP8.5.


Assuntos
Apocynum/crescimento & desenvolvimento , Mudança Climática , Ecossistema , China , Previsões , ômega-Conotoxina GVIA
19.
Eur J Cardiovasc Nurs ; 16(2): 104-112, 2017 02.
Artigo em Inglês | MEDLINE | ID: mdl-27036954

RESUMO

BACKGROUND: Atrial fibrillation (AF) is associated with cognitive impairment in heart failure (HF). AIMS: The purpose of this study was to examine whether AF independently predicted cognitive function in HF patients after controlling for more demographic, medical and psychological characteristics, and whether the timing of AF onset in relation to HF diagnosis independently contributed to cognitive function in HF patients with AF. METHODS: A total of 188 hospitalized HF patients (62.8% male, age 66.3±10.6 years) completed cognitive function assessment with the Montreal Cognitive Assessment (MoCA). A history of AF, along with other medical characteristics, was ascertained through a review of participants' medical charts. The timing of AF onset in relation to HF diagnosis was categorized into AF occurring prior to HF diagnosis (i.e. prior AF) and AF developing after HF diagnosis (i.e. incident AF). RESULTS: Altogether 72 participants had a positive diagnostic history of AF. Specifically, 41 had prior AF, and 31 developed AF subsequently. In HF patients, AF was associated with poorer performance on cognitive function after controlling for more confounders (ß=-0.112, ΔR2=0.010, p=0.046). Among HF patients with AF, incident AF independently predicted poorer cognitive function (ß=-0.238, ΔR2=0.027, p=0.047). CONCLUSION: AF independently contributes to cognitive function in HF patients after adjusting for more confounding variables. The timing of AF onset in relation to HF diagnosis independently predicts cognitive function in HF patients with AF. Prospective studies are needed to elucidate possible mechanisms for the association between AF and cognitive function in HF populations.


Assuntos
Fibrilação Atrial/complicações , Transtornos Cognitivos/etiologia , Transtornos Cognitivos/fisiopatologia , Cognição/fisiologia , Insuficiência Cardíaca/complicações , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Fatores de Risco
20.
Spine J ; 16(10): e649-e650, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26928879
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA