Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 145
Filtrar
Mais filtros

Base de dados
Tipo de documento
País de afiliação
Intervalo de ano de publicação
1.
J Cell Mol Med ; 28(8): e18247, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38520212

RESUMO

Malignant melanoma (MM) is a highly aggressive and deadly form of skin cancer, primarily caused by recurrence and metastasis. Therefore, it is crucial to investigate the regulatory mechanisms underlying melanoma recurrence and metastasis. Our study has identified a potential targeted regulatory relationship between LINC02202, miR-526b-3p and XBP1 in malignant melanoma. Through the regulation of the miR-526b-3p/XBP1 signalling pathway, LINC02202 may play a role in tumour progression and immune infiltration and inhibiting the expression of LINC02202 can increase the efficacy of immunotherapy for melanoma. Our findings shed light on the impact of LINC02202/XBP1 on the phenotype and function of malignant melanoma cells. Furthermore, this study provides a theoretical foundation for the development of novel immunotherapy strategies for malignant melanoma.


Assuntos
Melanoma , MicroRNAs , Neoplasias Cutâneas , Humanos , Melanoma/tratamento farmacológico , Melanoma/genética , Melanoma/patologia , MicroRNAs/metabolismo , Receptor de Morte Celular Programada 1/metabolismo , Anticorpos Monoclonais/farmacologia , Anticorpos Monoclonais/uso terapêutico , Linhagem Celular Tumoral , Neoplasias Cutâneas/genética , Sistemas de Liberação de Medicamentos , Perfilação da Expressão Gênica , Regulação Neoplásica da Expressão Gênica , Proteína 1 de Ligação a X-Box/genética , Proteína 1 de Ligação a X-Box/metabolismo
2.
Ann Hematol ; 103(3): 771-780, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38294533

RESUMO

The objective of this study was to analyze the correlation between skeletal muscle mass and the distribution of peripheral blood lymphocytes and natural killer (NK) cells, as well as their impact on prognosis in patients with acute myeloid leukemia (AML). A retrospective analysis was conducted on 211 newly diagnosed AML patients, evaluating skeletal muscle index (SMI), NK cell proportion, and absolute value, along with relevant clinical data. Linear regression and Spearman's correlation coefficient were used to assess the relationship between various indicators and SMI, followed by multiple linear regression for further modeling. Univariate and multivariate Cox proportional hazards regression models were used to identify independent predictors for overall survival (OS). Among the 211 AML patients, 38 cases (18.0%) were diagnosed with sarcopenia. Multiple linear regression analysis included weight, fat mass, ECOG score, body mass index, and peripheral blood NK cell proportion, constructing a correlation model for SMI (R2 = 0.745). Univariate analysis identified higher NK cell count (> 9.53 × 106/L) as a poor predictor for OS. Multivariate Cox proportional hazards regression model indicated that age ≥ 60 years, PLT < 100 × 109/L, ELN high risk, sarcopenia, and B cell count > 94.6 × 106/L were independent adverse prognostic factors for AML patients. Low skeletal muscle mass may negatively impact the count and function of NK cells, thereby affecting the prognosis of AML. However, further basic and clinical research is needed to explore the specific mechanisms underlying the relationship between NK cells and SMI in AML.


Assuntos
Leucemia Mieloide Aguda , Sarcopenia , Humanos , Pessoa de Meia-Idade , Sarcopenia/patologia , Estudos Retrospectivos , Prognóstico , Leucemia Mieloide Aguda/diagnóstico , Leucemia Mieloide Aguda/patologia , Músculo Esquelético , Células Matadoras Naturais
3.
Environ Sci Technol ; 58(19): 8215-8227, 2024 May 14.
Artigo em Inglês | MEDLINE | ID: mdl-38687897

RESUMO

Per- and polyfluoroalkyl substances (PFAS) are extensively utilized in varieties of products and tend to accumulate in the human body including umbilical cord blood and embryos/fetuses. In this study, we conducted an assessment and comparison of the potential early developmental toxicity of perfluorooctanoic acid (PFOA), undecafluorohexanoic acid (PFHxA), heptafluorobutyric acid, perfluorooctanesulfonate (PFOS), perfluorohexanesulfonate, and perfluorobutyric acid at noncytotoxic concentrations relevant to human exposure using models based on human embryonic stem cells in both three-dimensional embryoid body (EB) and monolayer differentiation configurations. All six compounds influenced the determination of cell fate by disrupting the expression of associated markers in both models and, in some instances, even led to alterations in the formation of cystic EBs. The expression of cilia-related gene IFT122 was significantly inhibited. Additionally, PFOS and PFOA inhibited ciliogenesis, while PFOA specifically reduced the cilia length. Transcriptome analysis revealed that PFOS altered 1054 genes and disrupted crucial signaling pathways such as WNT and TGF-ß, which play integral roles in cilia transduction and are critical for early embryonic development. These results provide precise and comprehensive insights into the potential adverse health effects of these six PFAS compounds directly concerning early human embryonic development.


Assuntos
Fluorocarbonos , Células-Tronco Embrionárias Humanas , Humanos , Células-Tronco Embrionárias Humanas/efeitos dos fármacos , Fluorocarbonos/toxicidade , Diferenciação Celular/efeitos dos fármacos
4.
BMC Public Health ; 24(1): 899, 2024 Mar 26.
Artigo em Inglês | MEDLINE | ID: mdl-38532400

RESUMO

PURPOSE: To examine the knowledge, attitudes, and practices (KAP) of caregivers of children with Kawasaki disease toward Kawasaki disease. METHODS: This cross-sectional study was conducted at four hospitals in China from March 2023 to June 2023. The KAP scores were evaluated using a self-designed questionnaire (Cronbach's α = 0.840; KMO = 0.7381). Correlations between dimension scores were evaluated by Pearson correlation analysis. A structural equation model (SEM) was used to examine the relationships among factors. RESULTS: Of 643 surveyed, 49.50% were male caregivers. The mean knowledge, attitude, and practice scores were 7.12 ± 2.34 (possible range, 0-11), 29.23 ± 5.67 (possible range, 12-60), and 21.57 ± 5.34 (possible range, 6-30). Knowledge correlated with attitude (r = 0.172, P < 0.001) and practice (r = 0.280, P < 0.001). Attitude was significantly related to practice (r = 0.598, P < 0.001). SEM showed knowledge had a positive effect on attitudes (ß = 0.581, P < 0.001) and practices (ß = 0.786, P < 0.001). In addition, attitudes also positively affected practices (ß = 0.554, P < 0.001). Occupation type (ß = 0.598, P = 0.025) and monthly per capita income (ß=-0.750, P = 0.020) had different effects on attitudes, while monthly per capita income also had negative effects on practices (ß=-0.410, P = 0.021). CONCLUSION: Caregivers of children with Kawasaki disease have moderate knowledge and unfavorable attitudes but proactive practices toward this disease. The results could help design an educational intervention to improve KAP, which could translate into better patient management and outcomes. TRIAL REGISTRATION: Not applicable.


Assuntos
Cuidadores , Síndrome de Linfonodos Mucocutâneos , Criança , Humanos , Masculino , Feminino , Estudos Transversais , Conhecimentos, Atitudes e Prática em Saúde , Inquéritos e Questionários
5.
Inflamm Res ; 72(10-11): 1965-1979, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37768354

RESUMO

BACKGROUND: Malignant neoplasms are a well-recognized global public health concern, with significant impacts on human health and quality of life. The interplay between tumors and autoimmune rheumatic diseases is complex, and the resulting tumor-associated rheumatic diseases represent a rare and intricate group of conditions that occur in the context of malignant tumors. In addition, various rheumatic diseases can arise as a consequence of oncology treatment. These diseases present with intricate clinical manifestations and pathological features, often rendering them challenging to diagnose and impacting patients' quality of life. Despite this, they have yet to be fully recognized. METHODS: This article presents a literature review of published original articles and review articles concerning paraneoplastic rheumatic syndromes and rheumatic diseases associated with cancer treatment. We conducted a comprehensive literature search in PubMed, Web of Science and Google Scholar databases, excluding duplicated and irrelevant studies. In cases of duplicated research, we selected articles with higher impact factors for the review. RESULTS: This review focuses on the clinical features, diagnosis, and treatment of paraneoplastic rheumatic diseases, as well as the pathogenesis of these diseases. Additionally, we summarize the autoimmune rheumatic diseases associated with cancer treatment. Ultimately, the goal of this review is to enhance recognition and improve the management of autoimmune rheumatic diseases related to tumors.


Assuntos
Doenças Autoimunes , Neoplasias , Síndromes Paraneoplásicas , Doenças Reumáticas , Humanos , Qualidade de Vida , Neoplasias/complicações , Neoplasias/terapia , Síndromes Paraneoplásicas/etiologia , Síndromes Paraneoplásicas/diagnóstico , Doenças Autoimunes/complicações
6.
BMC Psychiatry ; 23(1): 535, 2023 07 24.
Artigo em Inglês | MEDLINE | ID: mdl-37488539

RESUMO

BACKGROUND: Schizophrenia is a chronic, complex, and severe mental disorder and caregivers having knowledge about it can help improve patient adherence to treatment. This study aims to translate the Knowledge About Schizophrenia Test (KAST) into a Chinese Mandarin version and test it among caregivers to validate its reliability and reproducibility, as well as to determine its associated sociodemographic factors and clinical factors. METHODS: The project surveyed 160 patients with schizophrenia and their caregivers at four community health facilities in Beijing, China, from January 2022 to February 2022. All patients and caregivers completed the sociodemographic questionnaire, and caregivers also completed the Chinese-version KAST, and 143 of these caregivers completed the Chinese-version KAST again 2-4 weeks later. RESULTS: The mean (SD) of the caregiver score was 11.49 (± 3.13). After item analysis, there was acceptable internal consistency among the 17 items in the Chinese version (KR-20 coefficient 0.702). The intraclass correlation coefficient in the retest (0.686) was statistically significant. Gender, educational attainment, marital status, relationship with the patient, and occupational status were associated with the KAST score. CONCLUSION: The findings demonstrate that the Chinese-version KAST is a reliable and reproducible instrument that can measure knowledge about schizophrenia and is valid to be applied in schizophrenia research.


Assuntos
Esquizofrenia , Humanos , Esquizofrenia/diagnóstico , Esquizofrenia/terapia , Reprodutibilidade dos Testes , Cuidadores , China , Inquéritos e Questionários , Psicometria
7.
BMC Psychiatry ; 23(1): 333, 2023 05 12.
Artigo em Inglês | MEDLINE | ID: mdl-37173670

RESUMO

BACKGROUND: It has been documented that social media addiction (SMA) has a detrimental effect on college students' academic engagement. However, the mechanisms underlying this association are not well understood. This study aimed to determine the serial mediation effects of sleep quality and fatigue on the relationship between SMA and academic engagement among college students. METHODS: A cross-sectional survey was conducted with 2661 college students (43.3% males, mean age = 19.97 years). The participants completed the Bergen Social Media Addiction Scale, the Utrecht Student Work Engagement Scale for Students, the Pittsburgh Sleep Quality Index, and the Fatigue Assessment Scale. The serial mediation effects were examined using Model 6 in the Hayes' PROCESS macro for SPSS. RESULTS: The results showed that SMA among college students had a direct negative relationship with their academic engagement (Effect = - 0.051, 95% CI: -0.087 to - 0.015). In addition, sleep quality and fatigue mediated the relationship between SMA and academic engagement both independent and serially, with the independent mediation effect of sleep quality being - 0.031 (95% CI: -0.048 to - 0.016), the independent mediation effect of fatigue being - 0.109 (95% CI: -0.133 to - 0.088), and the serial mediation effect of sleep quality and fatigue being - 0.080 (95% CI: -0.095 to - 0.066). The total indirect effect of the three mediation paths was 80.9%. CONCLUSIONS: Decreased academic engagement caused by SMA can be aggravated by poor sleep quality and fatigue. Strengthening supervision and intervention in social media use among college students, supplemented by attention to psychosomatic health, including sleep quality and fatigue could promote their engagement in academic work.


Assuntos
Transtorno de Adição à Internet , Qualidade do Sono , Masculino , Humanos , Adulto Jovem , Adulto , Feminino , Estudos Transversais , Fadiga , Estudantes
8.
BMC Psychiatry ; 23(1): 339, 2023 05 12.
Artigo em Inglês | MEDLINE | ID: mdl-37173691

RESUMO

BACKGROUND: International consensus shows that community-based rehabilitation (CBR) service is an effective way to improve functioning and negative symptoms and address the treatment gap for schizophrenia. Rigorous trials are needed in China to demonstrate effective and scalable CBR interventions to significantly improve outcomes for people with schizophrenia and to provide evidence of the economic benefits. The objectives of this trial are to examine the effectiveness of CBR as an adjunct to test the usual facility-cased care (FBC) in comparison to FBC alone in improving a range of outcomes in people with schizophrenia and their caregivers. METHODS: This trial is a cluster randomized controlled trial design in China. The trial will be conducted at three districts of Weifang city, Shandong province. Eligible participants will be identified from the psychiatric management system where community-dwelling patients with schizophrenia have been registered. Participants will be recruited after providing informed consent. 18 sub-districts will be randomly allocated in a 1:1 ratio to facility-based care (FBC) plus CBR (intervention arm) or FBC alone (control arm). The structured CBR intervention will be delivered by trained psychiatric nurses or community health workers. We aim to recruit 264 participants. The primary outcomes include symptoms of schizophrenia, personal and social function, quality of life, family burden of caring, etc. The study will be conducted according to good ethical practice, data analysis and reporting guidelines. DISCUSSION: If the hypothesized clinical benefit and cost-effectiveness of CBR intervention are confirmed, this trial will provide significant implications for policy makers and practitioners to scale up rehabilitation services, as well as for people with schizophrenia and their family to promote recovery and social inclusion, and to alleviate the burden of care. TRIAL REGISTRATION: Chinese Clinical Trial Registry (ChiCTR2200066945). Registered December 22, 2022.


Assuntos
Esquizofrenia , Humanos , China , Análise Custo-Benefício , Qualidade da Assistência à Saúde , Qualidade de Vida , Ensaios Clínicos Controlados Aleatórios como Assunto
9.
BMC Public Health ; 23(1): 425, 2023 03 03.
Artigo em Inglês | MEDLINE | ID: mdl-36869301

RESUMO

BACKGROUND: The association of anxiety and depression with adverse reactions after receipt of coronavirus disease 2019 (COVID-19) vaccine is not clear among the general population. This study aims to evaluate the effect of anxiety and depression on self-reported adverse reactions to COVID-19 vaccine. METHODS: The cross-sectional study was conducted during April-July 2021. Participants completing the two doses of vaccine were included in this study. Sociodemographic information, anxiety and depression levels and adverse reactions after the first dose of vaccine for all participants were collected. The anxiety and depression levels were assessed by the Seven-item Generalized Anxiety Disorder Scale and the Nine-item Patient Health Questionnaire Scale, respectively. The multivariate logistic regression analysis was used to examine the association between anxiety and depression and adverse reactions. RESULTS: A total of 2161 participants were enrolled in this study. The prevalence of anxiety and depression was 13% (95% confidence interval (CI), 11.3-14.2%) and 15% (95%CI, 13.6-16.7%), respectively. Of the 2161 participants, 1607 (74%; 95% CI, 73-76%) reported at least one adverse reaction after the first dose of the vaccine. Pain at the injection site (55%) and fatigue and headache (53% and 18%, respectively) were the most commonly reported local and systemic adverse reactions, respectively. Participants with anxiety or depression or both were more likely to report local and systemic adverse reactions (P < 0.05). CONCLUSION: The results suggest that anxiety and depression increase the risk of self-reported adverse reactions to COVID-19 vaccine. Consequently, appropriate psychological interventions before vaccination will help to reduce or alleviate symptoms of vaccination.


Assuntos
Vacinas contra COVID-19 , COVID-19 , Humanos , Estudos Transversais , Autorrelato , Depressão , China , Ansiedade
10.
Cutan Ocul Toxicol ; 42(4): 264-272, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37602871

RESUMO

OBJECTIVE: To explore the retinal toxicity of pharmaceuticals and personal care products (PPCPs), flame retardants, bisphenols, phthalates, and polycyclic aromatic hydrocarbons (PAHs) on human retinal progenitor cells (RPCs) and retinal pigment epithelial (RPE) cells, which are the primary cell types at the early stages of retinal development, vital for subsequent functional cell type differentiation, and closely related to retinal diseases. MATERIALS AND METHODS: After 23 days of differentiation, human embryonic stem cell (hESC)-based retinal pre-organoids, containing RPCs and RPE cells, were exposed to 10, 100, and 1000 nM pesticides (butachlor, terbutryn, imidacloprid, deltamethrin, pendimethalin, and carbaryl), flame retardants (PFOS, TBBPA, DBDPE, and TDCIPP), PPCPs (climbazole and BHT), and other typical pollutants (phenanthrene, DCHP, and BPA) for seven days. Then, mRNA expression changes were monitored and compared. RESULTS: (1) The selected pollutants did not show strong effects at environmental and human-relevant concentrations, although the effects of flame retardants were more potent than those of other categories of chemicals. Surprisingly, some pollutants with distinct structures showed similar adverse effects. (2) Exposure to pollutants induced different degrees of cell detachment, probably due to alterations in extracellular matrix and/or cell adhesion. CONCLUSIONS: In this study, we established a retinal pre-organoid model suitable for evaluating multiple pollutants' effects, and pointed out the potential retinal toxicity of flame retardants, among other pollutants. Nevertheless, the potential mechanisms of toxicity and the effects on cell detachment are still unclear and deserve further exploration. Additionally, this model holds promise for screening interventions aimed at mitigating the detrimental effects of these pollutants.


Assuntos
Poluentes Ambientais , Retardadores de Chama , Células-Tronco Embrionárias Humanas , Humanos , Células-Tronco Embrionárias Humanas/metabolismo , Poluentes Ambientais/toxicidade , Retardadores de Chama/farmacologia , Retardadores de Chama/toxicidade , Retina/metabolismo , Organoides , Diferenciação Celular
11.
Psychiatr Q ; 94(3): 501-529, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37249835

RESUMO

Schizophrenia is a serious mental illness that imposes huge burden of illness on the society. We aimed to conduct a meta-analytic and systematic review of literature on the effectiveness of community-based rehabilitation interventions on symptoms and functioning for people with schizophrenia. The PubMed, Embase, the Cochrane Library, Web of Science, and CINAHL databases were searched through April 16 and 17, 2021, including clinical trial registries and previous Cochrane reviews. We included 24 randomized controlled trials in this review. The content of interventions varied from single-faceted rehabilitation intervention or cognitive retraining, to multi-component rehabilitation interventions or case management. Among 20 studies that reported effects of community-based rehabilitation interventions on symptoms, the pooled SMDs across all interventions was 0.94 (95% CI = 0.11, 1.76; P < 0.001; I2 = 99.1%; n = 3694), representing a strong effect. 21 included studies showed that community-based rehabilitation interventions also had beneficial impacts on functioning (SMD = 1.65; 95% CI = 0.88, 2.43; P < 0.001; I2 = 98.9%; n = 3734). Overall quality of evidence was moderate with a high level of heterogeneity. Community-based rehabilitation interventions have positive effectiveness in improving patients' symptoms and functioning. Community-based rehabilitation interventions should therefore be provided as an adjuvant service in addition to facility-based care for people with schizophrenia.


Assuntos
Esquizofrenia , Humanos
12.
Geriatr Nurs ; 51: 194-201, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37011491

RESUMO

OBJECTIVE: To assess the effect of Tai Chi exercise on fear of falling (FOF) and balance in older adults. METHOD: Chinese and English databases were searched for randomized controlled trials (RCTs) on the effect of Tai Chi on the fear of falling and balance of older adults. The search time limit was from inception until 13 December 2022. RESULTS: A total of 13 RCTs were included and the overall quality was moderate. The results showed that Tai Chi exercise could significantly improve fear of falling [SMD = -0.54, 95%CI(-1.09, 0.01), Z =1.94, P = 0.05], dynamic balance [SMD = -2.23, 95%CI(-3.89, -0.75), Z=2.90, P = 0.004] and fall incidence [RR = 0.48, 95%CI(0.35, 0.65), Z =4.67, P <0.001] in older adults. However, its significant benefits in improving the static balance [MD = 4.16, 95%CI(-3.71, 12.04), Z =1.04, P = 0.30] in older adults were not found. The results of the subgroup analysis showed that the short-term effect of Tai Chi in reducing the fear of falling was more significant (P = 0.002). CONCLUSION: Tai Chi could alleviate the FOF of older adults, improve balance and reduce fall incidence. However, large-sample, multi-center, high-quality randomized controlled studies are still verified in the future.


Assuntos
Tai Chi Chuan , Humanos , Idoso , Tai Chi Chuan/métodos , Equilíbrio Postural , Exercício Físico , Bases de Dados Factuais
13.
Environ Res ; 214(Pt 4): 114093, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-35998690

RESUMO

The high moisture content and heavy metal concentration of hyperaccumulator are the main bottlenecks of resource utilization. Supercritical water gasification technology was used to convert Sedum plumbizincicola (a hyperaccumulator of Zn and Cd) into hydrogen gas and to immobilize HMs into biochar. Homogeneous alkali metal catalysts such as NaOH, Na2CO3 and Ca(OH)2 were added to optimize the experimental conditions. The results showed that NaOH was effective in capturing CO2in-situ, thereby shifting the water-gas shift reaction equilibrium in the forward direction. And the increase of NaOH concentration had a significant promotion effect on hydrogen production. In the non-catalytic gasification of Sedum plumbizincicola, the highest hydrogen (1.5 mol/kg) and H2 selectivity (22.9%) with greater carbon gasification efficiency (19.3%) and lower H2 gasification efficiency (8.7%) of the gas products were obtained at 400 °C with 6 wt% material concentration for 20 min. However, NaOH at 5% mass fraction maximized hydrogen and H2 selectivity up to 7.5 and 98.2%, respectively. Alkali catalyst not only promoted the generation of hydrogen-rich bio-gas but also enhanced the immobilization efficiency of heavy metals. Compared to non-catalytic, when the addition amount of NaOH was 1 wt%, the Zn、Mn、Cd、Pb、Cr accumulated in biochar increased significantly for 76.8, 42.5, 80.8, 75.6 and 80.0%, respectively. This study highlights the remarkable ability of SCWG with alkali catalyst for hydrogen production and heavy metal stabilization.


Assuntos
Metais Alcalinos , Metais Pesados , Álcalis , Cádmio , Hidrogênio , Hidróxido de Sódio , Água
14.
Platelets ; 33(8): 1307-1311, 2022 Nov 17.
Artigo em Inglês | MEDLINE | ID: mdl-35791514

RESUMO

MYH9-related disorder (MYH9-RD) is autosomal dominant thrombocytopenia caused by mutations in the MYH9 gene, which codes for the non-muscle myosin-IIA heavy chain. We present a case of a 24-year-old Chinese man with MYH9-RD who was initially misdiagnosed with immune thrombocytopenia. Whole-exome sequencing and Sanger sequencing revealed a novel missense mutation in the MYH9 gene at the position of c.4550 G > T (p.G1517V) in exon 32. The same phenotype was observed in the proband, his mother, and his brother, in addition to macrothrombocytopenia and Dohle-like bodies in neutrophil granulocytes without non-hematologic manifestations. Following failed treatment with eltrombopag, avatrombopag, which was not mentioned before in the MYH9-RD treatment, was administered to the patient, and thrombocytopenia improved. In this case report, we present a novel pathogenic mutation and show the potential of avatrombopag for temporarily increasing the platelet count in patients with MYH9-RD.


Assuntos
Perda Auditiva Neurossensorial , Trombocitopenia , Benzoatos , Perda Auditiva Neurossensorial/genética , Humanos , Hidrazinas , Masculino , Proteínas Motores Moleculares/genética , Mutação , Cadeias Pesadas de Miosina/genética , Pirazóis , Tiazóis , Tiofenos , Trombocitopenia/congênito , Trombocitopenia/diagnóstico , Trombocitopenia/tratamento farmacológico , Trombocitopenia/genética , Falha de Tratamento
15.
Molecules ; 27(6)2022 Mar 10.
Artigo em Inglês | MEDLINE | ID: mdl-35335172

RESUMO

The four polycyclic aromatic hydrocarbon markers (PAH4) of benzo[a]anthracene (BaA), chrysene (Chr), benzo[b]fluoranthene (BbF), and benzo[a]pyrene (BaP) are indicators showing polycyclic aromatic hydrocarbon (PAH) contamination levels in Chinese medicine raw materials (CMRMs), extracts and health food products; Samples of herbal medicine, herbal extracts, and food supplements were extracted with n-hexane, then cleaned up sequentially on Florisil and EUPAH solid-phase extraction (SPE) columns. A gas chromatography-mass spectrometry method for the determination of four polycyclic aromatic hydrocarbon markers in Chinese medicine raw material, extracts, and health food products was established; In spiked-recovery experiments, the average recovery was about 78.6-107.6% with a precision of 2.3-10.5%. The limit of quantification (LOQ) and limit of detection (LOD) of the PAH4 markers in this method were 2.0 µg/kg and 0.7 µg/kg, respectively. When the developed method was utilized to determine PAH4 contents in 12 locally available health food products, 3 samples contained over 10.0 µg/kg BaP, and 5 samples contained over 50.0 µg/kg PAH4. The European Union (EU) limits for BaP and PAH4 are 10 and 50.0 µg/kg, respectively; therefore, more attention must be drawn to the exposure risk of BaP and PAH4 in CMRMs, their extracts, and health food products. According to the risk assessment based on the Margin of Exposure (MOE) method, it is recognized that the products mentioned in this study pose a low risk.


Assuntos
Alimentos Especializados , Hidrocarbonetos Policíclicos Aromáticos , Contaminação de Alimentos/análise , Alimentos Especializados/análise , Medicina Tradicional Chinesa , Extratos Vegetais , Hidrocarbonetos Policíclicos Aromáticos/análise
16.
Artigo em Inglês | MEDLINE | ID: mdl-34499597

RESUMO

A Gram-reaction-negative, yellow-pigmented, non-spore-forming rod, aerobic, motile bacterium, designated SJY3T, was isolated from soil samples collected from a Pu-erh tea cellar in Bolian Pu-erh tea estate Co. Ltd. in Pu'er city, Yunnan, south-west China. Phylogenetic analysis based on 16S rRNA gene sequences showed that the isolate belonged to the genus Massilia. The closest phylogenetic relative was Massilia arenae CICC 24458T (99.5 %), followed by M. timonae CCUG45783T (97.9 %), M. oculi CCUG43427AT (97.8 %), and M. aurea DSM 18055T (97.8 %). The major fatty acids were C16 : 0 and C16 : 1 ω7c and/or C16 : 1 ω6c. The major respiratory quinone was ubiquinone Q-8 and the major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, and phosphatidylethanolamine. Genome sequencing revealed a genome size of 5.97 M bp and a G+C content of 65.4 mol%. Pairwise determined whole genome average nucleotide identity (gANI) values and digital DNA-DNA hybridization (dDDH) values were all below the threshold. Although the 16S rRNA gene similarity of stain SJY3T and Massilia arenae CICC 24458T was more than 99 %, the gANI, dDDH values and genomic tree clearly indicated that they were not of the same species. In summary, strain SJY3T represents a new species, for which we propose the name Massilia puerhi sp. nov. with the type strain SJY3T (=CGMCC 1.17158T=KCTC 82193T).


Assuntos
Oxalobacteraceae/classificação , Filogenia , Microbiologia do Solo , Técnicas de Tipagem Bacteriana , Composição de Bases , China , DNA Bacteriano/genética , Ácidos Graxos/química , Hibridização de Ácido Nucleico , Oxalobacteraceae/isolamento & purificação , Fosfolipídeos/química , Pigmentação , RNA Ribossômico 16S/genética , Análise de Sequência de DNA , Chá , Ubiquinona/química
17.
BMC Womens Health ; 21(1): 419, 2021 12 18.
Artigo em Inglês | MEDLINE | ID: mdl-34922503

RESUMO

BACKGROUND: Cervical cancer is one of the most common cancers among women worldwide. The formulation or evaluation on prevention strategies all require an accurate understanding of the burden for cervical cancer burden. We aimed to report the up-to-date estimates of cervical cancer burden at global, regional, and national levels. METHODS: Data were extracted from the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2017 study. The counts, age-standardized rates, and percentage changes of incidence, disability-adjusted life-years (DALYs), and death attributed to cervical cancer at the global, regional, and national levels in all 195 countries and territories from 21 regions during 2007 to 2017 by age and by Socio-demographic Index (SDI) were measured. All estimates were reported with 95% uncertainty intervals (UIs). RESULTS: In 2017, 601,186 (95% UI 554,455 to 625,402) incident cases of cervical cancer were reported worldwide, which caused 8,061,667 (7,527,014 to 8,401,647) DALYs and 259,671 (241,128 to 269,214) deaths. The age-standardized rates for incidence, DALYs and death decreased by - 2.8% (- 7.8% to 0.6%), - 7.1% [- 11.8% to - 3.9%] and - 6.9% [- 11.5% to - 3.7%] from 2007 to 2017, respectively. The highest age-standardized incidence, DALYs and death rates in 2017 were observed in the low SDI quintile, Oceania, Central and Eastern Sub-Saharan Africa. During 2007 to 2017, only East Asia showed increase in these rates despite not significant. At the national level, the highest age-standardized rates for incidence, DALYs, and death in 2017 were observed in Kiribati, Somalia, Eritrea, and Central African Republic; and Georgia showed the largest increases in all these rates during 2007 to 2017. CONCLUSION: Although the age-standardized rates for incidence, DALYs, and death of cervical cancer have decreased in most parts of the world from 2007 to 2017, cervical cancer remains a major public health concern in view of the absolute number of cervical cancer cases, DALYs, and deaths increased during this period. The challenge is more prone to in the low SDI quintile, Oceania, Central and Eastern Sub-Saharan Africa, East Asia, and some countries, suggesting an urgent to promote human papillomavirus vaccination in these regions.


Assuntos
Infecções por Papillomavirus , Vacinas contra Papillomavirus , Neoplasias do Colo do Útero , Feminino , Carga Global da Doença , Humanos , Incidência , Anos de Vida Ajustados por Qualidade de Vida , Fatores de Risco , Neoplasias do Colo do Útero/epidemiologia
18.
BMC Health Serv Res ; 21(1): 722, 2021 Jul 22.
Artigo em Inglês | MEDLINE | ID: mdl-34294102

RESUMO

BACKGROUND: The service industry has been an evolving sector and a great concern to providers ensuring continuously that clients' satisfaction is met. Hence, the importance of patient satisfaction in the healthcare sector. This study focused on the satisfaction of women with the delivery of health services in Ghana and aims to be different from other studies which has focused on patient satisfaction with urban and rural health services, regional health services and health insurance. Our study examines the percentages of satisfaction with the multiple outcomes defined and identifies the key health system and demographic related factors associated with women satisfaction. METHODS: This study used data from the 2014 Ghana Demographic and Health Survey and a total of 12,831 households were systematically selected with reproductive women aged 15-49 years eligible for interview. Data for this study was analysed quantitatively using descriptive statistics, chi square and regression analysis. A total of 3648 women were included in this study and the final analysis thus involved a weighted sample of 3507 women. Satisfaction indicators were put together into SERVQUAL dimensions in the study and reliability test run using Cronbach Alpha (α). All data analyses were carried out in STATA 13.0. The adjusted odds ratios (AOR) with their corresponding 95% confidence intervals (CI) were calculated. RESULTS: Analysis showed that independently, education and religion were significantly associated with service reliability, overall satisfaction and responsiveness. Payment option was also associated with responsiveness and tangibility dimensions. Furthermore, place of residence was independently associated with responsiveness, tangibility and overall satisfaction. Finally, maternal age, region, provider friendly, ease of getting care and opening hours were all independently associated with reliability, responsiveness, tangibility and overall service satisfaction at the multivariable level. CONCLUSIONS: Dimensions of service quality which focus on patient-centered atmosphere and efficient service delivery system should be integrated and strengthened by hospital management in order to increase patient satisfaction. Key maternal characteristics and health system related factors were revealed to have positive association with patient satisfaction with health services delivery and this cannot be ignored by health care managers in ensuring that systems are improved for better health care.


Assuntos
Satisfação do Paciente , Serviços de Saúde Rural , Feminino , Gana , Humanos , Qualidade da Assistência à Saúde , Reprodutibilidade dos Testes
19.
Eur Arch Otorhinolaryngol ; 278(12): 4847-4853, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33837837

RESUMO

PURPOSE: The etiology of allergic rhinitis (AR) is closely correlated with the complex interactions between genetic and environmental factors. This study explored the effect of single-nucleotide polymorphisms (SNPs) of CYSLTR1 gene on the risk of AR and clinical response to montelukast treatment in children. METHODS: A total of 135 children with AR and 100 healthy children were included for subsequent analyses. Genotype and allele distribution of rs321029 SNP of CYSLTR1 gene and inflammatory mediators were detected and compared between AR and healthy children. RESULTS: Genotype and allele frequency of rs321029 SNP of CYSLTR1 gene showed no difference between children with AR and controls or between AR cases with different severity. The total montelukast effective rate of wide-type genotype TT children was significantly higher than variants genotype CC children. CONCLUSION: Polymorphism of rs321029 on CYSLTR1 gene is not related to the susceptibility and severity of AR in children, but it is closely related with the efficacy of montelukast on AR.


Assuntos
Antiasmáticos/uso terapêutico , Quinolinas , Receptores de Leucotrienos/genética , Rinite Alérgica , Acetatos/uso terapêutico , Criança , Ciclopropanos , Frequência do Gene , Predisposição Genética para Doença , Genótipo , Humanos , Polimorfismo de Nucleotídeo Único , Quinolinas/uso terapêutico , Rinite Alérgica/tratamento farmacológico , Rinite Alérgica/genética , Sulfetos
20.
Sensors (Basel) ; 21(12)2021 Jun 08.
Artigo em Inglês | MEDLINE | ID: mdl-34201197

RESUMO

Dissolved oxygen (DO) is a direct indicator of water pollution and an important water quality parameter that affects aquatic life. Based on the fundamental theorem of surfaces in differential geometry, the present study proposes a new modeling approach to estimate DO concentrations with high accuracy by assessing the spatial correlation and heterogeneity of DO with respect to explanatory variables. Specifically, a regularization penalty term is integrated into the high-accuracy surface modeling (HASM) method by applying geographically weighted regression (GWR) with some covariates. A modified version of HASM, namely HASM_MOD, is illustrated through a case study of Poyang Lake, China, by comparing the results of HASM, a support vector machine (SVM), and cokriging. The results indicate that HASM_MOD yields the best performance, with a mean absolute error (MAE) that is 38%, 45%, and 42% lower than those of HASM, the SVM, and cokriging, respectively, by using the cross-validation method. The introduction of a regularization penalty term by using GWR with respect to covariates can effectively improve the quality of the DO estimates. The results also suggest that HASM_MOD is able to effectively estimate nonlinear and nonstationary time series and outperforms three other methods using cross-validation, with a root-mean-square error (RMSE) of 0.20 mg/L and R2 of 0.93 for the two study sites (Sanshan and Outlet_A stations). The proposed method, HASM_MOD, provides a new way to estimate the DO concentration with high accuracy.


Assuntos
Oxigênio , Qualidade da Água , China , Monitoramento Ambiental , Máquina de Vetores de Suporte
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA