Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 179
Filtrar
1.
Acta Pharmacol Sin ; 45(7): 1451-1465, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38491161

RESUMO

Inflammatory bowel disease (IBD) is characterized by persistent damage to the intestinal barrier and excessive inflammation, leading to increased intestinal permeability. Current treatments of IBD primarily address inflammation, neglecting epithelial repair. Our previous study has reported the therapeutic potential of notoginsenoside R1 (NGR1), a characteristic saponin from the root of Panax notoginseng, in alleviating acute colitis by reducing mucosal inflammation. In this study we investigated the reparative effects of NGR1 on mucosal barrier damage after the acute injury stage of DSS exposure. DSS-induced colitis mice were orally treated with NGR1 (25, 50, 125 mg·kg-1·d-1) for 10 days. Body weight and rectal bleeding were daily monitored throughout the experiment, then mice were euthanized, and the colon was collected for analysis. We showed that NGR1 administration dose-dependently ameliorated mucosal inflammation and enhanced epithelial repair evidenced by increased tight junction proteins, mucus production and reduced permeability in colitis mice. We then performed transcriptomic analysis on rectal tissue using RNA-sequencing, and found NGR1 administration stimulated the proliferation of intestinal crypt cells and facilitated the repair of epithelial injury; NGR1 upregulated ISC marker Lgr5, the genes for differentiation of intestinal stem cells (ISCs), as well as BrdU incorporation in crypts of colitis mice. In NCM460 human intestinal epithelial cells in vitro, treatment with NGR1 (100 µM) promoted wound healing and reduced cell apoptosis. NGR1 (100 µM) also increased Lgr5+ cells and budding rates in a 3D intestinal organoid model. We demonstrated that NGR1 promoted ISC proliferation and differentiation through activation of the Wnt signaling pathway. Co-treatment with Wnt inhibitor ICG-001 partially counteracted the effects of NGR1 on crypt Lgr5+ ISCs, organoid budding rates, and overall mice colitis improvement. These results suggest that NGR1 alleviates DSS-induced colitis in mice by promoting the regeneration of Lgr5+ stem cells and intestinal reconstruction, at least partially via activation of the Wnt/ß-Catenin signaling pathway. Schematic diagram of the mechanism of NGR1 in alleviating colitis. DSS caused widespread mucosal inflammation epithelial injury. This was manifested by the decreased expression of tight junction proteins, reduced mucus production in goblet cells, and increased intestinal permeability in colitis mice. Additionally, Lgr5+ ISCs were in obviously deficiency in colitis mice, with aberrant down-regulation of the Wnt/ß-Catenin signaling. However, NGR1 amplified the expression of the ISC marker Lgr5, elevated the expression of genes associated with ISC differentiation, enhanced the incorporation of BrdU in the crypt and promoted epithelial restoration to alleviate DSS-induced colitis in mice, at least partially, by activating the Wnt/ß-Catenin signaling pathway.


Assuntos
Colite , Ginsenosídeos , Mucosa Intestinal , Camundongos Endogâmicos C57BL , Receptores Acoplados a Proteínas G , Via de Sinalização Wnt , Animais , Ginsenosídeos/farmacologia , Ginsenosídeos/uso terapêutico , Via de Sinalização Wnt/efeitos dos fármacos , Colite/tratamento farmacológico , Colite/induzido quimicamente , Colite/metabolismo , Colite/patologia , Camundongos , Receptores Acoplados a Proteínas G/metabolismo , Mucosa Intestinal/efeitos dos fármacos , Mucosa Intestinal/metabolismo , Masculino , Células-Tronco/efeitos dos fármacos , Células-Tronco/metabolismo , Humanos
2.
Nutr Neurosci ; : 1-13, 2023 Sep 10.
Artigo em Inglês | MEDLINE | ID: mdl-37691351

RESUMO

CONTEXT: Spinal cord injury (SCI) is a potentially fatal neurological disease with severe complications and a high disability rate. An increasing number of animal experimental studies support the therapeutic effect of quercetin, which is a natural anti-inflammatory and antioxidant bioflavonoid. OBJECTIVE: This paper reviewed the therapeutic effect of quercetin on a rat SCI model and summarized the relevant mechanistic research. DATA SOURCES: PubMed, EMBASE, Web of Science, Science Direct, WanFang Data, SinoMed databases, the China National Knowledge Infrastructure, and the Vip Journal Integration Platform were searched from their inception to April 2023 for animal experiments applying quercetin to treat SCI. STUDY SELECTION: Based on the PICOS criteria, a total of 18 eligible studies were included, of which 14 were high quality. RESULTS: In this study, there was a gradual increase in effect based on the Basso, Beattie, and Bresnahan (BBB) score after three days (p < 0.0001). Furthermore, gender differences also appeared in the efficacy of quercetin; males performed better than females (p = 0.008). Quercetin was also associated with improved inclined plane test score (p = 0.008). In terms of biochemical indicators, meta-analysis showed that MDA (p < 0.0001) and MPO (p = 0.0002) were significantly reduced after quercetin administration compared with the control group, and SOD levels were increased (p = 0.004). Mechanistically, quercetin facilitates the inhibition of oxidative stress, inflammation, autophagy and apoptosis that occur after SCI. CONCLUSIONS: Generally, this systematic review suggests that quercetin has a neuroprotective effect on SCI.

3.
Perfusion ; 38(8): 1751-1753, 2023 11.
Artigo em Inglês | MEDLINE | ID: mdl-35973207

RESUMO

Macleaya cordata is a Chinese herbal medicine containing a variety of highly cardiotoxic alkaloids, and might result in cardiac failure. Venous-arterial Extracorporeal membrane oxygenation (VA-ECMO) could be used as a therapeutic option in patients poisoned by Macleaya cordata complicating refractory cardiogenic shock or cardiac arrest. A 60-year-old man suffered from severe arrhythmia, cardiogenic shock and cardiac arrest after consuming Macleaya cordata. The patient received VA-ECMO support in the emergency department at 5 hours after hospitalization, and was weaned from VA-ECMO on day 4, and was discharged with complete clinical improvement on Day 12. VA-ECMO is an effective method in treating cardiogenic shock or cardiac arrest induced by severe poisoning from Chinese herbal medicine. Timely and appropriate interventions with venoarterial extracorporeal membrane oxygenation devices could improve clinical outcomes in these patients.


Assuntos
Medicamentos de Ervas Chinesas , Oxigenação por Membrana Extracorpórea , Parada Cardíaca , Venenos , Humanos , Masculino , Pessoa de Meia-Idade , Medicamentos de Ervas Chinesas/intoxicação , Parada Cardíaca/etiologia , Estudos Retrospectivos , Choque Cardiogênico/terapia , Choque Cardiogênico/etiologia
4.
J Orthop Sci ; 28(5): 984-991, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-36137918

RESUMO

BACKGROUND: The Japanese Orthopaedic Association Back Pain Evaluation Questionnaire (JOABPEQ) is a reliable and sensitive measure of disability to determine functional status and evaluate curative effects in low back pain, it has now been cross-cultural translated into many other languages and adapted for use in different countries. We aim to evaluate the translation procedures and measurement properties of cross-cultural adaptations of the JOABPEQ. METHODS: Studies related to cross-cultural adaptation of the JOABPEQ in a specific language/culture were searched in PubMed, Embase, CINAHL, SciELO, PsycINFO, SinoMed, and Web of Science from their inception to March 2022. The Guidelines for the Process of Cross-Cultural Adaptation of Self-Report Measures and the Consensus-based Standards for the Selection of Health Status Measurement Instruments guideline were used for evaluation. RESULTS: Nine different versions of cross-cultural JOABPEQ adaptations in 8 different languages/cultures were included. The adaptation process was not strictly performed, such as standard forward translation and expert committee review were rarely reported. Content validity (8/9), floor and ceiling effects (3/9), reliability (4/9), and interpretability (6/9) were assessed in most of the adaptations, while agreement (2/9), responsiveness (2/9), and the internal consistency (2/9) were not. JOABPEQ can replace functional and quality of life score to reduce the burden of scientific research. CONCLUSION: We recommend Persian-Iranian, simplified Chinese-Chinese Mandarin, Thai and Gunaydin G's Turkish adaptations for application. The numerical pain rating scale/visual analogue scale in low back pain and lower extremities, as well as numbness in lower extremities could not be neglected in JOABPEQ adaptations.


Assuntos
Comparação Transcultural , Dor Lombar , Ortopedia , Humanos , Dor nas Costas , Avaliação da Deficiência , Dor Lombar/diagnóstico , Psicometria/métodos , Qualidade de Vida , Reprodutibilidade dos Testes , Inquéritos e Questionários
5.
J Environ Sci (China) ; 125: 750-760, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36375957

RESUMO

Copper (Cu) is a kind of micronutrient element that is essential for human metabolism. However, it is also considered as an environmental pollutant which is toxic to organisms at a high concentration level. Probiotics, regarded as beneficial microorganisms for promoting human health, have functions of antioxidant capacity, immune-enhancing properties, intestinal barrier protection and regulation. Several studies have reported that probiotics show positive effects on alleviating and intervening heavy metals toxicity. However, evidence for relieving copper-induced toxicity by probiotics is still limited. In this study, we firstly conducted a zebrafish larvae model to screen out microorganisms which are helpful for CuSO4 toxicity resistance and one novel strain named as Bacillus coagulans XY2 was discovered with the best protective activity. B. coagulans XY2 significantly reduced the mortality of zebrafish larvae exposed to 10 µmol/L CuSO4 for 96 hr, as well as alleviated the neutrophils infiltration in the larvae lateral line under a 2 hr exposure. B. coagulans XY2 exhibited a high in vitro antioxidant activity and against CuSO4-induced oxidative stress in zebrafish larvae by up-regulating sod1, gstp1 and cat gene transcriptional levels and relevant enzymatic activities. CuSO4 stimulated the inflammation process resulting in obvious increases of gene il-1ß and il-10 transcription, which were suppressed by B. coagulans XY2 intervention. Overall, our results underline the bio-function of B. coagulans XY2 on protecting zebrafish larvae from copper toxicity, suggesting the potential application values of probiotics in copper toxicity alleviation on human and the environment.


Assuntos
Bacillus coagulans , Probióticos , Humanos , Animais , Bacillus coagulans/fisiologia , Peixe-Zebra , Cobre/toxicidade , Cobre/metabolismo , Larva , Antioxidantes/metabolismo
6.
Zhongguo Yi Xue Ke Xue Yuan Xue Bao ; 45(3): 530-532, 2023 Jun.
Artigo em Zh | MEDLINE | ID: mdl-37407545

RESUMO

The acquired immunodeficiency syndrome patients with compromised immunity are prone to hemophagocytic syndrome secondary to opportunistic infections.This paper reports a rare case of hemophagocytic syndrome secondary to human parvovirus B19 infection in an acquired immunodeficiency syndrome patient,and analyzes the clinical characteristics,aiming to improve the diagnosis and treatment of the disease and prevent missed diagnosis and misdiagnosis.


Assuntos
Síndrome da Imunodeficiência Adquirida , Eritema Infeccioso , Linfo-Histiocitose Hemofagocítica , Infecções por Parvoviridae , Parvovirus B19 Humano , Humanos , Linfo-Histiocitose Hemofagocítica/diagnóstico , Linfo-Histiocitose Hemofagocítica/tratamento farmacológico , Eritema Infeccioso/complicações , Síndrome da Imunodeficiência Adquirida/complicações , Infecções por Parvoviridae/complicações , Infecções por Parvoviridae/diagnóstico
7.
Angew Chem Int Ed Engl ; 62(39): e202308858, 2023 Sep 25.
Artigo em Inglês | MEDLINE | ID: mdl-37462217

RESUMO

An asymmetric intramolecular hydroalkylation of unactivated internal olefins with tethered cyclic ketones was realized by the cooperative catalysis of a newly designed chiral amine (SPD-NH2 ) and PdII complex, providing straightforward access to either bridged or fused bicyclic systems containing three stereogenic centers with excellent enantioselectivity (up to 99 % ee) and diastereoselectivity (up to >20 : 1 dr). Notably, the bicyclic products could be conveniently transformed into a diverse range of key structures frequently found in bioactive terpenes, such as Δ6 -protoilludene, cracroson D, and vulgarisins. The steric hindrance between the Ar group of the SPD-NH2 catalyst and the branched chain of the substrate, hydrogen-bonding interactions between the N-H of the enamine motif and the C=O of the directing group MQ, and the counterion of the PdII complex were identified as key factors for excellent stereoinduction in this dual catalytic process by density functional theory calculations.

8.
Angew Chem Int Ed Engl ; 60(13): 7061-7065, 2021 03 22.
Artigo em Inglês | MEDLINE | ID: mdl-33369843

RESUMO

A challenging direct asymmetric catalytic aerobic oxidative cross-coupling of 2-naphthylamine and 2-naphthol, using a novel CuI /SPDO system, has been successfully developed for the first time. Enantioenriched 3,3'-disubstituted NOBINs were achieved and could be readily derived to divergent chiral ligands and catalysts. This reaction features high enantioselectivities (up to 96 % ee) and good yields (up to 80 %). The DFT calculations suggest that the F-H interactions between CF3 of L17 and H-1,8 of 2-naphthol, and the π-π stacking between the two coupling partners could play vital roles in the enantiocontrol of this cross-coupling reaction.

9.
Neurourol Urodyn ; 39(1): 96-107, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31584215

RESUMO

OBJECTIVE: To evaluate the histological response to and changes in the biomechanical properties of titanized polypropylene lightweight mesh and conventional polypropylene mesh at 1 and 12 weeks following implantation in the sheep vagina. METHODS: We compared a titanized polypropylene lightweight mesh (TiLOOP Mesh) to a conventional polypropylene mesh (Gynemesh PS) in a sheep vagina model. Explants were harvested after 1 and 12 weeks (n = 6/mesh type/time point) for histological observation. After 12 weeks, mesh-tissue complex specimens were biomechanically assessed by a uniaxial tension system. RESULTS: One week after implantation, there was no significant difference in the inflammatory response between the two groups. Twelve weeks after implantation, the TiLOOP light mesh elicited a lower inflammatory response than was observed for the Gynemesh PS (1.44 ± 0.61 vs 2.05 ± 0.80, P = .015). Twelve weeks after implantation, the collagen I/III ratio was lower in the TiLOOP light mesh group than in the Gynemesh PS group (9.41 ± 5.06 vs 15.21 ± 8.21, P = .019). The messenger RNA expression levels of the inflammatory factors interleukin 10 and tumor necrosis factor α were lower in the TiLOOP Mesh group than in the Gynemesh PS group at both 1 and 12 weeks (P < .05). There were no significant differences in any of the evaluated biomechanical characteristics between the two meshes (P > .05). CONCLUSION: Although the titanized polypropylene lightweight mesh induces slightly less tissue reactivity and has better in vivo biocompatibility, further studies should be conducted including the complications and the success rate of pelvic organ prolapse in patients before recommending it in pelvic floor reconstruction.


Assuntos
Materiais Biocompatíveis , Teste de Materiais , Polipropilenos , Telas Cirúrgicas , Titânio , Animais , Fenômenos Biomecânicos , Colágeno/metabolismo , Feminino , Inflamação/etiologia , Interleucina-10/biossíntese , Diafragma da Pelve/cirurgia , Carneiro Doméstico , Fator de Necrose Tumoral alfa/biossíntese , Vagina
10.
Int Urogynecol J ; 31(1): 79-89, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-30997545

RESUMO

INTRODUCTION AND HYPOTHESIS: Most synthetic meshes used in transvaginal surgery are made of polypropylene, which has a stable performance, but does not easily degrade in vivo. However, mesh-related complications are difficult to address and have raised serious concerns. A new biomaterial mesh with good tissue integration and few mesh-related complications is needed. To evaluate the effect of a new bacterial cellulose (BC) mesh on pelvic floor reconstruction following implantation in the vagina of sheep after 1 and 12 weeks. METHODS: The meshes were implanted in the submucosa of the posterior vagina wall of sheep. At 1 and 12 weeks after surgery, mesh-tissue complex (MTC) specimens were harvested for histological studies and biomechanical evaluation. At 12 weeks after surgery, MTC specimens were biomechanically assessed by a uniaxial tension "pulley system". RESULTS: The BC mesh elicited a higher inflammatory response than Gynemesh™PS at both 1 and 12 weeks after implantation. Twelve weeks after implantation, the BC mesh resulted in less fibrosis than Gynemesh™PS. Compared with the Gynemesh™PS group, the BC mesh group had increased mRNA expression of MMP-1, MMP-2, and MMP-9 (P < 0.05), but decreased expression of the anti-inflammatory factor IL-4 (P < 0.05). Twelve weeks after implantation, the ultimate load and maximum elongation percentage of the BC mesh were significantly lower than those of Gynemesh™PS. CONCLUSIONS: The BC mesh could not be a promising biomaterial for pelvic floor reconstructive surgery unless the production process and parameters were improved.


Assuntos
Procedimentos Cirúrgicos em Ginecologia/instrumentação , Telas Cirúrgicas , Vagina/cirurgia , Animais , Celulose , Feminino , Prolapso de Órgão Pélvico/cirurgia , Ovinos
11.
Plant Dis ; 103(12): 3002-3008, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31573432

RESUMO

Alternaria species are the most important fungal pathogens that attack various crops as well as fruit trees such as pear and cause black spot disease. Here, a loop-mediated isothermal amplification (LAMP) assay is developed for the detection of Alternaria species. A. alternata cytochrome b (cyt-b) gene was used to design two pairs of primers and amplified a 229-bp segment of Aacyt-b gene. The results showed that LAMP assay is faster and simpler than polymerase chain reaction (PCR). LAMP assay is highly sensitive method for the detection of about 1 pg of genomic DNA of A. alternata by using optimized concentration of MgCl2 (4 mM) in final LAMP reaction. In contrast, the limit of detection was 1 ng of target DNA via conventional PCR. Among the genomic DNA of 46 fungal species, only the tubes containing DNA of Alternaria spp. except A. porri, A. solani, and A. infectoria changed color from orange to yellowish green with SYBR Green I including the main pathogens of pear black spot. The yellowish green color was indicative of DNA amplification. Moreover, LAMP assay was used for testing infected tissues among 22 healthy and diseased pear tissues; the orange color changed to yellowish green for infected tissues only. Altogether, we conclude that cyt-b gene can be used for the detection of Alternaria spp. via LAMP assay, which is involved in pear black spot disease.


Assuntos
Alternaria , Técnicas de Amplificação de Ácido Nucleico , Pyrus , Alternaria/genética , Citocromos b/genética , Primers do DNA , Microbiologia de Alimentos/métodos , Limite de Detecção , Reação em Cadeia da Polimerase , Pyrus/microbiologia
12.
Angew Chem Int Ed Engl ; 58(32): 11023-11027, 2019 08 05.
Artigo em Inglês | MEDLINE | ID: mdl-31131524

RESUMO

A novel chiral 1,5-N,N-bidentate ligand based on a spirocyclic pyrrolidine oxazoline backbone was designed and prepared, and it coordinates CuBr in situ to form an unprecedented catalyst that enables efficient oxidative cross-coupling of 2-naphthols. Air serves as an external oxidant and generates a series of C1 -symmetric chiral BINOL derivatives with high enantioselectivity (up to 99 % ee) and good yield (up to 87 %). This approach is tolerant of a broader substrates scope, particularly substrates bearing various 3- and 3'-substituents. A preliminary investigation using one of the obtained C1 -symmetric BINOL products was used as an organocatalyst, exhibiting better enantioselectivity than the previously reported organocatalyst, for the asymmetric α-alkylation of amino esters.

13.
Cell Tissue Res ; 372(3): 535-547, 2018 06.
Artigo em Inglês | MEDLINE | ID: mdl-29480458

RESUMO

HUMSCs were isolated, differentiated and characterized in vitro. Both HUMSCs and smooth muscle cells differentiated from HUMSCs were used to fabricate tissue-engineered fascia equivalents. Forty-eight mature female Sprague Dawley rats were randomly assigned to four groups: group A (GynemeshTMPS, n = 12), group B (GynemeshTMPS + HUMSCs; n = 12), group C (GynemeshTMPS + smooth muscle cells differentiated from HUMSCs; n = 12) and group D (GynemeshTMPS + HUMSCs + smooth muscle cells differentiated from HUMSCs; n = 12). The posterior vaginal wall was incised from the introitus and the mesh was then implanted. Three implants of each type were tested at 1, 4, 8 and 12 weeks. Fibrotic remodeling, inflammation, vascularization and tissue regeneration were histologically assessed. The levels of type I and type III collagen were determined. There was no difference in fibrotic remodeling between cell-seeded and unseeded meshes at any time (p > 0.05). At 12 weeks, there did not appear to be fewer inflammatory cells around the filament bundles in the mesh with cells compared with the mesh alone (P > 0.05). Group D showed a trend toward better vascularization at 12 weeks compared with group A (P < 0.05). Twelve weeks after implantation, a thin layer of new tissue growth covered the unseeded scaffold and a thicker layer covered the cell-seeded scaffold (P < 0.05). No significant difference in the ratio of collagen type I/III could be detected among the different groups after 12 weeks (P > 0.05). HUMSCs with differentiated smooth muscle cells might have a potential role in fascia tissue engineering to repair POP in the future.


Assuntos
Transplante de Células-Tronco Mesenquimais , Células-Tronco Mesenquimais/citologia , Diafragma da Pelve/cirurgia , Procedimentos de Cirurgia Plástica/métodos , Cordão Umbilical/citologia , Animais , Biomarcadores/metabolismo , Diferenciação Celular , Proliferação de Células , Separação Celular , Células Cultivadas , Colágeno Tipo I/metabolismo , Colágeno Tipo III/metabolismo , Modelos Animais de Doenças , Fáscia/fisiologia , Feminino , Humanos , Células-Tronco Mesenquimais/metabolismo , Células-Tronco Multipotentes/citologia , Miócitos de Músculo Liso/citologia , Fenótipo , Ratos Sprague-Dawley , Regeneração , Engenharia Tecidual
14.
Fish Shellfish Immunol ; 81: 260-265, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30010021

RESUMO

Currently, white spot syndrome virus (WSSV) is one of the most serious pathogens that impacts shrimp farming around the world. A WSSV vaccine provides a significant protective benefit to the host shrimp. Although various types of vaccines against WSSV have emerged, the immune effects among them were not compared, and it remains unclear which type of vaccine has the strongest protective effect. Meanwhile, due to the lack of effective routes of administration and immunization programs, WSSV vaccines have been greatly limited in the actual shrimp farming. To answer these questions, this study conducted a comprehensive meta-analysis over dozens of studies and compared all types WSSV vaccines, which include sub-unit protein vaccines, whole virus inactivated vaccines, DNA vaccines and RNA-based vaccines. The results showed that the RNA-based vaccine had the highest protection rate over the other three types of vaccines. Among the various sub-unit protein vaccines, VP26 vaccine had the best protective effects than other sub-unit protein vaccines. Moreover, this study demonstrated that vaccines expressed in eukaryotic hosts had higher protection rates than that of prokaryotic systems. Among the three immunization modes (oral administration, immersion and injection) used in monovalent protein vaccines, oral administration had the highest protection rate. In natural conditions, shrimp are mostly infected by the virus orally. These results provide a guide for exploration of a novel WSSV vaccine and help facilitate the application of WSSV vaccines in shrimp farming.


Assuntos
Penaeidae/imunologia , Vacinas Virais/administração & dosagem , Vírus da Síndrome da Mancha Branca 1/imunologia , Administração Oral , Animais , Penaeidae/virologia , Vacinação/métodos
15.
Environ Sci Technol ; 52(3): 1054-1061, 2018 02 06.
Artigo em Inglês | MEDLINE | ID: mdl-29316392

RESUMO

The mining and burning of low-rank coal in Xuanwei, China have attracted a great deal of research attention because of the generated polyaromatic hydrocarbons (PAHs) and the high incidence of lung cancer in this region. Given the abundant transition metals in the allitic soil, we hypothesized that environmentally persistent free radicals (EPFRs) are formed in this region and the potential risk had not been addressed. Strong electron paramagnetic resonance (EPR) signals of 3.20 × 1017 - 3.10 × 1019 spins/g were detected in environmental samples, including chimney soot, coal, soil and total suspended particles (TSP). These EPR signals did not significantly change after 18-months storage and had g-values in the range of 2.0039-2.0046, suggesting typical organic free radicals. Similar strong EPR signals were observed in PAH (anthracene and pyrene as model compounds) degradation on simulated soil particles and lasted over one month even when the applied PAHs were 100% degraded. Based on g-value and bond width, we propose that EPR signals detected in TSP and soot originated from both coal combustion and PAH photodegradation. Further research is thus urgently required to investigate EPFR generation, exposure and risk in Xuanwei to better understand the cause of high lung cancer incidence.


Assuntos
Carvão Mineral , Hidrocarbonetos Policíclicos Aromáticos , China , Espectroscopia de Ressonância de Spin Eletrônica , Radicais Livres , Solo
16.
Int Urogynecol J ; 29(8): 1147-1153, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-29478112

RESUMO

INTRODUCTION AND HYPOTHESIS: Our aim was to evaluate the impact of generalized anxiety disorders (GAD) on the effectiveness of pessary treatment for pelvic organ prolapse (POP) in postmenopausal women. METHODS: One-hundred and ten women with symptomatic POP who underwent pessary treatment were enrolled in this prospective study. Subjective evaluations of pelvic floor symptoms were assessed using the Pelvic Floor Distress Inventory (PFDI-20) and the Pelvic Floor Impact Questionnaire-7 (PFIQ-7), both at baseline and at the 3-month follow-up visit after pessary use. GAD was measured by the Generalized Anxiety Disorder-7 (GAD-7). Independent samples t tests, Mann-Whitney U test, chi-square test, Fisher's exact test, and Wilcoxon signed rank test were used to analyze data. RESULTS: Twenty-one patients (20.6%) had GAD at baseline. After 3 months of pessary use, PFIQ-7, PFDI-20, and GAD scores were significantly improved in all participants (P < 0.001). In the GAD-negative group, total PFIQ-7 and PFDI-20 scores, including all subscales scores, were significantly decreased from baseline to posttreatment (P < 0.05). However, in the GAD-positive group, both PFIQ-7 and PFDI-20 scores, including subscales, were also significantly decreased from baseline to posttreatment (P < 0.05), except for subscale Colorectal-Anal Impact Questionnaire (CRAIQ-7) of PFIQ-7 (P = 0.225), which represented the impact on quality of life (QoL) from bowel dysfunction. CONCLUSIONS: Both groups of women with or without GAD showed significant improvement in QoL scores after 3 months of pessary treatment. GAD had no influence on the success of pessary treatment for POP.


Assuntos
Transtornos de Ansiedade/diagnóstico , Transtornos de Ansiedade/psicologia , Diafragma da Pelve/fisiopatologia , Prolapso de Órgão Pélvico/terapia , Pessários , Qualidade de Vida , Transtornos de Ansiedade/complicações , Feminino , Humanos , Prolapso de Órgão Pélvico/psicologia , Pós-Menopausa , Estudos Prospectivos , Reprodutibilidade dos Testes , Inquéritos e Questionários , Resultado do Tratamento
17.
BMC Cardiovasc Disord ; 17(1): 174, 2017 07 03.
Artigo em Inglês | MEDLINE | ID: mdl-28673246

RESUMO

BACKGROUND: The meta-analysis was aimed to evaluate the effects of AMPD1 gene C34T polymorphism on cardiac function indexes, blood pressure and prognosis in patients with cardiovascular diseases (CVD). METHODS: Eligible studies were retrieved through a comprehensive search of electronic databases and manual search. Then the high-quality studies met the rigorous inclusion and exclusion criteria, as well as related to the subject was selected for the study. Comprehensive data analyses were conducted using STATA software 12.0. RESULTS: The study results revealed that CVD patients with CT + TT genotype of AMPD1 C34T polymorphism presented elevated left ventricular ejection fraction (LVEF) (%) and reduced left ventricular end diastolic dimension (LVEDD) (mm) as compared with CC genotype, moreover, the subgroup analysis found that the LVEF (%) was markedly higher in heart failure (HF) patients carrying CT + TT genotype than CC genotype. Besides, the systolic blood pressure (SBP) (mmHg) in CVD patients with CT + TT genotype was obviously decreased in contrast with the CC genotype. Patients suffered from HF with different genotypes (CT + TT and CC) of AMPD1 C34T polymorphism exhibited no significant differences in total survival rate and cardiac survival rate. CONCLUSIONS: Our current meta-analysis indicated that the T allele of AMPD1 gene C34T polymorphism may be correlated with LVEF, LVEDD and SBP, which plays a protective role in the cardiac functions and blood pressure in CVD patients, but had no effects on total survival rate and cardiac survival rate for HF.


Assuntos
AMP Desaminase/genética , Pressão Sanguínea/genética , Doenças Cardiovasculares/genética , Polimorfismo Genético , Função Ventricular Esquerda/genética , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/enzimologia , Doenças Cardiovasculares/fisiopatologia , Frequência do Gene , Predisposição Genética para Doença , Heterozigoto , Homozigoto , Humanos , Estimativa de Kaplan-Meier , Modelos Lineares , Fenótipo , Prognóstico , Fatores de Proteção , Medição de Risco , Fatores de Risco , Volume Sistólico/genética
18.
Pak J Pharm Sci ; 30(4(Suppl.)): 1455-1460, 2017 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29043997

RESUMO

This paper aims to understand the blood pressure control status for hypertension patients, and discuss the relationship between social support, medication compliance and blood pressure for hypertensive patients. The survey objective was the hypertensive patients in chronic disease management system in Xinxiang city. The survey was conducted as the questionnaire survey filled by objectives. Social support rating scale and medication therapy compliance questionnaire was utilized to evaluate the patients' social support and medication therapy compliance. 1095 patients in medication were investigated, the blood pressure of 66.6% investigated objectives was controlled at target levels (<140/90 mmHg), 70.0% investigated objectives have good medication therapy compliance; the overall social support score for hypertensive patients in medication was (40.01±6.54) points, the subjective support score, objective support score and support utilization degree score were respectively (24.43±4.61) points, (8.59±2.59) points and (7.00±2.06) points; Rank correlation coefficient of Spearman illustrated that the support utilization rating evaluation was apparently correlated to medication therapy compliance (rs=0.88, P<0.01); multivariate analysis proved that the protective factors for medication therapy compliance were the high support utilization rate (OR 1.62; 95%CI 1.19~2.05), long hypertensive duration (5~10 years: OR 2.01, 95%CI 1.42~2.73; more than 10 years: OR 1.46, 95%CI 1.01~1.99) and high average monthly household income (OR 2.03, 95%CI 1.45~2.69); Risk factor for blood pressure control were male (OR 0.61, 95% CI 0.47~0.79) and high hypertensive grade (OR 0.31, 95%CI 0.19~0.44); The protective factors for blood pressure control was good medication therapy compliance (OR 1.54, 95%CI 1.22~1.89), (average P<0.05). It required to build effective social support system, increase patients' social support utilization degree, emphasized the intervention on low average monthly household incomes, male higher rate, higher hypertensive degree, and further improve the medication therapy compliance and hypertensive control rate of hypertensive patients.


Assuntos
Anti-Hipertensivos/uso terapêutico , Pressão Sanguínea/efeitos dos fármacos , Hipertensão/tratamento farmacológico , Adesão à Medicação , Adulto , Idoso , Idoso de 80 Anos ou mais , Anti-Hipertensivos/efeitos adversos , China , Estudos Transversais , Feminino , Pesquisas sobre Atenção à Saúde , Humanos , Hipertensão/diagnóstico , Hipertensão/fisiopatologia , Masculino , Pessoa de Meia-Idade , Apoio Social , Fatores Socioeconômicos , Resultado do Tratamento
19.
J Org Chem ; 81(3): 1099-105, 2016 Feb 05.
Artigo em Inglês | MEDLINE | ID: mdl-26716579

RESUMO

A new cascade three-component haloazidation of benzene-tethered 1,7-enynes for the formation of biologically interesting azidylated 3,4-dihydroquinolin-2(1H)-ones has been achieved under mild and metal-free conditions using TMSN3 as a N3 source and NIS (or NBS or NCS) as a halogen source. The reaction pathway involves in situ-generated azidyl radical-triggered α,ß-conjugated addition/6-exo-dig cyclization/radical coupling sequence, resulting in successive multiple bond-forming events, including carbon-nitrogen, carbon-carbon, and carbon-halogen bonds to rapidly construct complex heterocyclic molecules. Furthermore, the resulting products would be useful building blocks in the discovery of lead compounds and other biologically interesting N3-containing heterocycles.


Assuntos
Azidas/química , Benzeno/química , Radicais Livres/química , Metais/química , Quinolonas/química , Quinolonas/síntese química , Fenômenos Biológicos , Carbono/química , Catálise , Ciclização , Estrutura Molecular , Nitrogênio/química
20.
Compr Psychiatry ; 69: 216-24, 2016 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-27423364

RESUMO

This study investigated the correlation between the level of microRNA expression in peripheral blood mononuclear cells (PBMCs) and symptomatology in patients with generalized anxiety disorder (GAD). MicroRNA array was performed in peripheral blood mononuclear cells (PBMCs) obtained from GAD patients with gender, age, ethnicity-matched healthy controls. Then real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) was used to verify the top 7 miRNAs with the highest fold-change values in 76 GAD patients and 39 healthy controls. It demonstrated that 5 miRNAs showed significantly differences in expression levels (P<0.01). These 5 GAD-associated miRNAs were finally selected into our study to analyze the association between the plasma level of miRNAs expression and symptomatology scores in Hamilton Anxiety Scale (HAMA). Results showed that the level of miR-4505 and miR-663 was negatively correlated with the total HAMA scores in GAD patients (r=0.2228, r=0.264 P<0.05). MiR-663 was selected into the regression equation of HAMA total scores and psychic anxiety symptomatology scores, and it could explain 5.3% of the HAMA total scores and 15.3% of the anxiety symptomatology scores. This study analyzed preliminarily possible circulating miRNAs expression changes in GAD patients, and the expression level of miR-663 highly correlated with psychic anxiety symptoms, further molecular mechanism of which needs to be explored.


Assuntos
Transtornos de Ansiedade/diagnóstico , Transtornos de Ansiedade/genética , MicroRNAs/sangue , MicroRNAs/genética , Adulto , Transtornos de Ansiedade/psicologia , Feminino , Humanos , Leucócitos Mononucleares/metabolismo , Masculino , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase em Tempo Real , Valores de Referência , Estatística como Assunto
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA