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1.
Zhongguo Dang Dai Er Ke Za Zhi ; 25(2): 172-178, 2023 Feb 15.
Artigo em Chinês | MEDLINE | ID: mdl-36854694

RESUMO

OBJECTIVES: To investigate the change in the distribution of memory B cell subsets in children with frequently relapsing nephrotic syndrome (FRNS) during the course of the disease. METHODS: A total of 35 children with primary nephrotic syndrome (PNS) who attended the Department of Pediatrics of the Affiliated Hospital of Xuzhou Medical University from October 2020 to October 2021 were enrolled as subjects in this prospective study. According to the response to glucocorticoid (GC) therapy and frequency of recurrence, the children were divided into two groups: FRNS (n=20) and non-FRNS (NFRNS; n=15). Fifteen children who underwent physical examination were enrolled as the control group. The change in memory B cells after GC therapy was compared between groups, and its correlation with clinical indicators was analyzed. RESULTS: Before treatment, the FRNS and NFRNS groups had significantly increased percentages of total B cells, total memory B cells, IgD+ memory B cells, and IgE+ memory B cells compared with the control group, and the FRNS group had significantly greater increases than the NFRNS group (P<0.05); the FRNS group had a significantly lower percentage of class-switched memory B cells than the NFRNS and control groups (P<0.05). After treatment, the FRNS and NFRNS groups had significant reductions in the percentages of total B cells, total memory B cells, IgM+IgD+ memory B cells, IgM+ memory B cells, IgE+ memory B cells, IgD+ memory B cells, and IgG+ memory B cells (P<0.05) and a significant increase in the percentage of class-switched memory B cells (P<0.05). The FRNS group had a significantly higher urinary protein quantification than the NFRNS and control groups (P<0.05) and a significantly lower level of albumin than the control group (P<0.05). In the FRNS group, urinary protein quantification was negatively correlated with the percentage of class-switched memory B cells and was positively correlated with the percentage of IgE+ memory B cells (P<0.05). CONCLUSIONS: Abnormal distribution of memory B cell subsets may be observed in children with FRNS, and the percentages of IgE+ memory B cells and class-switched memory B cells can be used as positive and negative correlation factors for predicting recurrence after GC therapy in these children.


Assuntos
Subpopulações de Linfócitos B , Síndrome Nefrótica , Criança , Humanos , Subpopulações de Linfócitos B/metabolismo , Imunoglobulina E , Imunoglobulina M , Síndrome Nefrótica/tratamento farmacológico , Síndrome Nefrótica/imunologia , Estudos Prospectivos , Glucocorticoides/uso terapêutico
2.
BMC Med Educ ; 22(1): 512, 2022 Jun 30.
Artigo em Inglês | MEDLINE | ID: mdl-35773709

RESUMO

OBJECTIVE: To study the effect of the problem-based learning (PBL) method in ultrasonography (US) resident standardization training during the COVID-19 pandemic. METHODS: Fifty residents were divided into two groups to participate in a 30-day US training program. The residents in the observation group underwent PBL combined with the lecture-based learning (LBL) method, while the residents in the control group experienced the LBL method alone, with 25 residents in each group. A basic theoretical test, practical examination, and questionnaire were used to evaluate the teaching effect of the PBL + LBL method and the LBL method alone. RESULTS: The basic theoretical pretest score of the observation group was not significantly different from that of the control group. However, the posttest theoretical score and practical score were significantly higher in the observation group than in the control group (P < 0.01). The results of the questionnaire showed that the resident satisfaction level in the observation group with PBL combined with the LBL method was 96%, which was significantly higher than that of the control group with the LBL method alone (80%) (P < 0.05). CONCLUSION: The combination of PBL with the LBL method has obvious advantages over the LBL method alone in regard to the training of US residents during the COVID-19 pandemic.


Assuntos
COVID-19 , Aprendizagem Baseada em Problemas , Humanos , Pandemias , Aprendizagem Baseada em Problemas/métodos , Padrões de Referência , Ensino , Ultrassonografia
3.
J Cell Physiol ; 233(8): 6001-6017, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-29271476

RESUMO

Single nucleotide polymorphisms (SNPs) in miRNAs are associated with the risk to development of certain human diseases and affect the regulatory capacity of miRNAs. However, the relationship between miRNAs polymorphisms and recurrent pregnancy loss (RPL) is still largely unknown. Our study found that one SNP rs56103835 T>C in miR-323b coding region was associated with the increase risk of human unexplained RPL (URPL), but no differences were found in another SNP rs75330474 C>T. However, in two-locus haplotype analysis, T-C haplotype was associated with an increased risk of URPL. The level of mature miR-323b was obviously up-regulated in cells transfected with T-C haplotype. T-C haplotype inhibited HTR-8/SVneo cells proliferation and migration and promoted cells apoptosis. Further experiments identified that paired-box 8 (Pax8) was a functionally relevant target of miR-323b, and its expression was reversely regulated by miR-323b. Besides, the expressions of Pax8 in villous chorionic tissues from URPL patients were lower than controls, contrary to the high expression of miR-323. More importantly, dual-luciferase assay indicated T-C haplotype, increasing miR-323b expression, could down-regulated Pax8 expression. Collectively, our data suggest that T-C haplotype in pre-miR-323b may aggravate the risk of developing URPL and influence the level of mature miR-323b and its target gene Pax8.


Assuntos
Aborto Espontâneo/genética , Povo Asiático/genética , Predisposição Genética para Doença/genética , Haplótipos/genética , MicroRNAs/genética , Polimorfismo de Nucleotídeo Único/genética , Estudos de Casos e Controles , Linhagem Celular , Linhagem Celular Tumoral , Proliferação de Células/genética , Regulação para Baixo/genética , Feminino , Células HEK293 , Células HeLa , Humanos , Gravidez
4.
Appl Opt ; 53(31): 7402-6, 2014 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-25402905

RESUMO

In this work, we propose an active optical zoom system. The zoom module of the system is formed by a liquid lens and a spatial light modulator (SLM). By controlling the focal lengths of the liquid lens and the encoded digital lens on the SLM panel, we can change the magnification of an image without mechanical moving parts and keep the output plane stationary. The magnification can change from 1/3 to 3/2 as the focal length of the encoded lens on the SLM changes from infinity to 24 cm. The proposed active zoom system is simple and flexible, and has widespread application in optical communications, imaging systems, and displays.

5.
J Asian Nat Prod Res ; 16(7): 724-9, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24665870

RESUMO

Two new lignans, 9-salicyl-(+)-isolariciresinol (1) and gaultheroside G (2), together with seven known compounds, were isolated from the ethanolic extract of the whole plant of Gaultheria yunnanensis. Their structures were determined by extensive NMR and MS analyses. Gaultheroside G (2) was found to have an unusual ether linkage between the 2 and 9' positions of aryl-tetralin lignan skeleton. All nine compounds were assayed for inhibitory effects against nitric oxide and pro-inflammatory cytokines TNF-α and IL-6 release in LPS-induced RAW 246.7 macrophages, while no significant activities were observed for the evaluated compounds.


Assuntos
Anti-Inflamatórios/isolamento & purificação , Gaultheria/química , Lignanas/isolamento & purificação , Animais , Anti-Inflamatórios/química , Anti-Inflamatórios/farmacologia , Interleucina-6/antagonistas & inibidores , Interleucina-6/farmacologia , Lignanas/química , Lignanas/farmacologia , Lipopolissacarídeos/farmacologia , Macrófagos/efeitos dos fármacos , Camundongos , Estrutura Molecular , Óxido Nítrico/biossíntese , Precursores de Proteínas , Fator de Necrose Tumoral alfa/efeitos dos fármacos
6.
Adv Sci (Weinh) ; 11(21): e2400642, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38647258

RESUMO

Kidney stones are a pervasive disease with notoriously high recurrence rates that require more effective treatment strategies. Herein, tartronic acid is introduced as an efficient inhibitor of calcium oxalate monohydrate (COM) crystallization, which is the most prevalent constituent of human kidney stones. A combination of in situ experimental techniques and simulations are employed to compare the inhibitory effects of tartronic acid with those of its molecular analogs. Tartronic acid exhibits an affinity for binding to rapidly growing apical surfaces of COM crystals, thus setting it apart from other inhibitors such as citric acid, the current preventative treatment for kidney stones. Bulk crystallization and in situ atomic force microscopy (AFM) measurements confirm the mechanism by which tartronic acid interacts with COM crystal surfaces and inhibits growth. These findings are consistent with in vivo studies that reveal the efficacy of tartronic acid is similar to that of citric acid in mouse models of hyperoxaluria regarding their inhibitory effect on stone formation and alleviating stone-related physical harm. In summary, these findings highlight the potential of tartronic acid as a promising alternative to citric acid for the management of calcium oxalate nephropathies, offering a new option for clinical intervention in cases of kidney stones.


Assuntos
Oxalato de Cálcio , Cristalização , Modelos Animais de Doenças , Cálculos Renais , Oxalato de Cálcio/química , Oxalato de Cálcio/metabolismo , Camundongos , Animais , Cálculos Renais/tratamento farmacológico , Cálculos Renais/metabolismo , Microscopia de Força Atômica , Humanos , Camundongos Endogâmicos C57BL
7.
Phys Chem Chem Phys ; 15(33): 14069-79, 2013 Sep 07.
Artigo em Inglês | MEDLINE | ID: mdl-23852181

RESUMO

We obtained the melting temperatures of the W nanoclusters with diameters in the range of 2.5-5.0 nm which manifest the good linear fitting to the size of nanoclusters (N(-1/3)). Four different initial configurations at each size produce nearly the same melting points, with the maximum discrepancies less than 40 K. The extrapolated bulk melting point 4210 K is lower than the simulated bulk value 4520 K. Surface premelting is detected by density profiles, deformation parameters and bond orientational order parameters. Moreover, by dividing particles into surface and subsurface layers, we analyzed the different behaviors of the inner and outer shell atoms during melting in detail. During coalescence of W nanoclusters (W(N) + W(N)→ W(2N)), the shape change is along the path of peanut → rod-like → spherical → liquid structure. The obtained melting points from W(2N) are in good agreement with those from W(N) + W(N), indicating that melting temperatures are mainly relevant to the number of atoms, and nearly not affected by the different surface areas in nanoclusters.


Assuntos
Nanopartículas Metálicas/química , Simulação de Dinâmica Molecular , Tungstênio/química , Tamanho da Partícula , Transição de Fase , Termodinâmica , Temperatura de Transição
8.
Zhonghua Zhong Liu Za Zhi ; 35(2): 148-53, 2013 Feb.
Artigo em Chinês | MEDLINE | ID: mdl-23714673

RESUMO

OBJECTIVE: To evaluate the clinical value of radial endorectal ultrasound (ERUS) in the assessment of preoperative staging of rectal carcinoma. METHODS: One hundred and ten patients with rectal cancer underwent preoperative endorectal ultrasound (ERUS) examination in our hospital from February 2010 to September 2011. ERUS was performed using a Hitachi 900, Hitachi HI Vision Preirus US scanner, with a 5 - 10 MHz rigid rotating radial transducer and a focal length of 2 - 5 cm. The size, shape, echo pattern, infiltration depth, degree of circumferential involvement, extra-rectal invasion of the lesions and lymph node involvement were observed. The results of ERUS staging were compared with histopathological findings of the surgical specimens. RESULTS: The accuracy of ERUS for T staging was 91.4%. The accuracy of ERUS in diagnosing stage T1, T2, T3, T4 cancers was 92.7%, 88.2%, 88.2% and 96.4%, respectively. The sensitivity of ERUS in diagnosing stage T1, T2, T3, T4 cancers was 92.3%, 72.7%, 85.4% and 71.4%, respectively. The specificity of ERUS in diagnosing stage T1, T2, T3, T4 cancer was 92.9%, 92.0%, 90.3% and 100.0%, respectively. Comparing the consistency of preoperative T-staging and postoperative pathological results, the Kappa value was 0.75, with a considerable consistency. The sensitivity, specificity, and accuracy of ERUS in the assessment of lymph node metastasis were 74.2%, 89.9% and 85.5%, respectively. Comparing the consistency of preoperative N-staging and postoperative pathological results, the Kappa value was 0.64, with a considerable consistency. CONCLUSIONS: ERUS is a practical and accurate tool in assessment of preoperative staging of rectal tumors in regard to tumor invasion depth (T) and regional lymph node status (N), with advantages of simple operation, less pain, and high accuracy.


Assuntos
Endossonografia/métodos , Neoplasias Retais/diagnóstico por imagem , Neoplasias Retais/patologia , Reto/diagnóstico por imagem , Adulto , Idoso , Feminino , Humanos , Metástase Linfática , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Período Pré-Operatório , Neoplasias Retais/cirurgia , Reto/patologia , Reto/cirurgia
9.
Dalton Trans ; 52(27): 9275-9281, 2023 Jul 11.
Artigo em Inglês | MEDLINE | ID: mdl-37341552

RESUMO

In this paper, a cyclic (CuIpz)3·CH3CN (1) precursor and a mixed-valence pentanuclear complex CuI3CuII2(OH)pz6·CH3CN (2) have been synthesized and structurally characterized by single-crystal X-ray diffraction, where pzH = 4-chloro-3,5-diphenylpyrazole. The excellent catalytic activity of 2 has been demonstrated in the chemical fixation of CO2 into value-added cyclic carbonates, which can be carried out at ambient pressure and room temperature along with ultra-high yield and perfect steric hindrance tolerance. Based on density functional theory (DFT) calculations and comparison with the catalytic performance of 1, it is proposed that the coordinatively unsaturated CuII atoms of 2 are probably the active sites for this catalytic reaction.

10.
J Asian Nat Prod Res ; 14(12): 1130-6, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-23088569

RESUMO

Four new highly oxygenated bisabolane sesquiterpenoids were obtained from the EtOH extract from Ligularia cymbulifera, and their structures were elucidated by interpretation of spectroscopic data. Their relative configurations were clarified by a detailed analysis of ¹H NMR coupling constants, nuclear overhauser effect (NOE) experiments and two-dimensional NMR spectra. These four new compounds were assayed for their antimicrobial activities against four Gram-positive and Gram-negative bacteria, as well as against one human pathogenic fungus.


Assuntos
Asteraceae/química , Sesquiterpenos/isolamento & purificação , Candida albicans/efeitos dos fármacos , Enterobacter cloacae/efeitos dos fármacos , Escherichia coli/efeitos dos fármacos , Humanos , Testes de Sensibilidade Microbiana , Estrutura Molecular , Ressonância Magnética Nuclear Biomolecular , Pseudomonas aeruginosa/efeitos dos fármacos , Sesquiterpenos/química , Sesquiterpenos/farmacologia , Staphylococcus aureus/efeitos dos fármacos
11.
Influenza Other Respir Viruses ; 16(3): 395-401, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-34796652

RESUMO

BACKGROUND: The pandemic of COVID-19 has a persistent impact on global health, yet its sequelae need to be addressed at a wide scale around the globe. This study aims to investigate the characteristics, prevalence, and risk factors for mid-term (>6 months) clinical sequelae in a cohort of COVID-19 survivors. METHODS: Totally 715 COVID-19 survivors discharged before April 1, 2020, from three medical centers in Wuhan, China, were included. The longitudinal study was conducted by telephone interviews based on a questionnaire including the clinical sequelae of general, respiratory, and cardiovascular systems. Demographics and some characteristics of clinical sequelae of the survivors were recorded and analyzed. Multivariate logistic regression analysis was applied to explore the risk factors for the sequelae. RESULTS: The median time interval from discharge to telephone interview was 225.0 days. The COVID-19 survivors' median ages were 69 years, and 51.3% were male. Among them, 29.9% had at least one clinical sequela. There were 19.2%, 22.7%, and 5.0% of the survivors reporting fatigue, respiratory symptoms, and cardiovascular symptoms, respectively. Comorbidities, disease severity, the application of mechanical ventilation and high-flow oxygen therapy, and the history of re-admission were associated with the presence of clinical sequelae. CONCLUSIONS: Our study provides further evidence for the prevalence and characteristics of clinical sequelae of COVID-19 survivors, suggesting long-term monitoring and management is needed for their full recovery.


Assuntos
COVID-19 , Idoso , COVID-19/complicações , COVID-19/epidemiologia , China/epidemiologia , Humanos , Estudos Longitudinais , Masculino , Pandemias , SARS-CoV-2 , Sobreviventes
12.
Am J Obstet Gynecol ; 204(6): 544.e9-17, 2011 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-21497788

RESUMO

OBJECTIVE: The objective of the study was to investigate the expression and regulation of polycomb group (PcG) proteins in human neural tube defects (NTDs). STUDY DESIGN: PcG proteins in human NTD fetuses and age-matched controls were detected by Western blot. The relation between PcG proteins and microribonucleic acids was predicted and confirmed by the bioinformatics method, real-time polymerase chain reaction (PCR), dual-luciferase activity assay, and Western blot. The trimethyl condition of histone H3 Lys27 (H3K27) was detected by immunohistochemical and immunofluorescence. RESULTS: Embryonic ectoderm development protein (EED) was differentially detected in placenta, cerebral cortex, and spinal cord from NTDs and age-matched controls. MiR-30b can interact with 3'-untranslated region (UTR) of Eed and regulate endogenous EED expression in neural tissues. In addition, we found an inverse relationship between the miR-30b expression and the amount of trimethyl H3K27. CONCLUSION: Differential expression of EED exists in the nerves system in human NTDs and that is regulated by miR-30b.


Assuntos
MicroRNAs/fisiologia , Defeitos do Tubo Neural/genética , Proteínas Repressoras/genética , Adulto , Feminino , Feto , Regulação da Expressão Gênica , Humanos , Masculino , Complexo Repressor Polycomb 2
13.
RNA Biol ; 8(5): 861-72, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21788734

RESUMO

Although there are plenty of evidence that single-nucleotide polymorphisms (SNPs) that fall within coding sequences of genes are involved in recurrent pregnancy loss (RPL), it is still unknown whether the polymorphisms in microRNAs (miRNAs) are related with RPL. In this study, we established this kind of association by confirming significant differences in genotype distribution of rs41275794 (P= 0.0005) and rs12976445 (P= 0.001) within the pri-miR-125a in 217 Han Chinese patients of RPL compared with 431 controls. Based on this observation, two-locus haplotypes were constructed and the A-T haplotype was found to be associated with an increased risk of RPL (OR=2.84, 95%C.I. 1.98-4.07, P=0.0000000057). Further analysis showed that the levels of pre- and mature- miR-125a were down-regulated in the cells transfected with the A-T haplotype, which was consistent with in vivo detection that the level of mature miR-125a was lower in 30 pregnant women with A-T haplotype than that with G-C haplotype. During in vitro RNA processing assays, we found a similar decrease in the amount of pre-miR-125a and decline in binding capacity of nuclear factors to pri-miR-125a with A-T haplotype. More importantly, the reduction in miR-125a, as a consequence of A-T haplotype, further led to less efficient inhibition of target genes, LIFR and ERBB2, which play important roles in the embryo implantation and decidualization. Thus, our data collectively suggest that two common polymorphisms in pre-miR-125a might contribute to the genetic predisposition to RPL by disrupting the production of miR-125a, which consequently interfered in the expression and function of target genes of miR-125a.


Assuntos
Aborto Habitual/genética , MicroRNAs/genética , Polimorfismo de Nucleotídeo Único , Aborto Habitual/etnologia , Povo Asiático , Estudos de Casos e Controles , China , Implantação do Embrião/genética , Feminino , Estudos de Associação Genética , Predisposição Genética para Doença , Haplótipos , Humanos , Subunidade alfa de Receptor de Fator Inibidor de Leucemia/genética , MicroRNAs/biossíntese , Gravidez , Receptor ErbB-2/genética
14.
Ultrasound Med Biol ; 47(7): 1737-1746, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-33838937

RESUMO

A portion of detected breast masses might be overrated by using the Breast Imaging-Reporting and Data System ultrasonography (BI-RADS US) lexicon. A principal component regression-based contrast-enhanced ultrasound (PCR-CEUS) evaluation system was built to quantitatively illustrate whether CEUS could help radiologists to differentiate 4A masses. The PCR-CEUS evaluation system, based on principal component analysis (PCA) and logistic regression, was verified by random assignment into training and test sets and shown to reduce the data dimension and avoid collinearity in CEUS variables. This prospective study consecutively collected 238 patients with 238 4A masses confirmed pathologically. All enrolled patients accepted CEUS examination. The diagnostic performance of senior and junior radiologists, PCR-CEUS and combined methods was compared. The PCR-CEUS system had consistent diagnostic performance in both the training and test sets, with an area under the curve (AUC) of 0.831 (0.765-0.897), 0.798 (0.7034-0.892) and 0.854 (0.765-0.943) (all P > 0.05). The AUC of the combined diagnostic model (PCR-CEUS + Senior radiologists) was higher than that of senior radiologists, and the combined model had higher sensitivity (0.875 (0.781-0.969) vs. 0.729 (0.603-0.855)) without compromising specificity. Furthermore, the AUC and specificity of the combined model (PCR-CEUS + Junior radiologists) (0.852 (0.787-0.916)) was higher than that of junior radiologists (0.665 (0.592-0.737) (P < 0.00001)). PCR-CEUS demonstrated good ability in differentiating malignant BI-RADS-US 4A masses and was helpful for both senior and junior radiologists.


Assuntos
Neoplasias da Mama/diagnóstico por imagem , Meios de Contraste , Ultrassonografia Mamária/métodos , Adulto , Sistemas de Dados , Feminino , Humanos , Pessoa de Meia-Idade , Estudos Prospectivos , Radiologia , Projetos de Pesquisa
15.
J Microbiol Immunol Infect ; 54(6): 1179-1183, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33563561

RESUMO

BACKGROUND: The rapid spread of C. difficile 027 has become one of the leading threats of healthcare-associated infections wordwild. However, C. difficile 027 infections have rarely been reported in China. The objective of this study was to strengthen the understanding of the molecular characterizations of C. difficile 027 in China. METHODS: In this study, stool specimens from 176 suspected CDI cases were collected from 1 Jan 2018 to 30 Jun 2019. These specimens were measured by GeneXpert test and C.difficile colonies were identified and analyzed. RESULTS: There were five samples positive for tcdA, tcdB, binary toxin genes and had deletions in tcdC gene. These five Clostridioides difficile isolates belonged to ST1 and confirmed as Clostridioides difficile 027 strains by PCR ribotyping. Through using whole genome sequencing, , we found that these five strains were closely clustered into the same predominant evolutionary branch and were highly similar to C. difficile 027 strain R20291. Antimicrobial susceptibility testing result showed they were highly resistant to fluoroquinolones. CONCLUSIONS: In Our study, five C. difficile 027 isolates were identified and characterized using MLST, PCR ribotyping and whole genome sequencing. We proposed that C. difficile 027 infections are probably neglected in China. Further epidemiological studies across the country together with the introduction of routine diagnostic testing and multi-center or national level surveillance are needed to ascertain the size of this potentially significant problem.


Assuntos
Clostridioides difficile/genética , Infecções por Clostridium/microbiologia , Antibacterianos/farmacologia , China/epidemiologia , Clostridioides difficile/classificação , Clostridioides difficile/efeitos dos fármacos , Clostridioides difficile/isolamento & purificação , Infecções por Clostridium/epidemiologia , Farmacorresistência Bacteriana , Genoma Bacteriano/genética , Genótipo , Hospitais , Humanos , Testes de Sensibilidade Microbiana , Tipagem de Sequências Multilocus , Filogenia , Estudos Retrospectivos , Ribotipagem
16.
Mol Neurodegener ; 16(1): 48, 2021 07 19.
Artigo em Inglês | MEDLINE | ID: mdl-34281568

RESUMO

BACKGROUND: Understanding the long-term effects of coronavirus disease 2019 (COVID-19) on cognitive function is essential for monitoring the cognitive decline in the elderly population. This study aims to assess the current cognitive status and the longitudinal cognitive decline in elderly patients recovered from COVID-19. METHODS: This cross-sectional study recruited 1539 COVID-19 inpatients aged over 60 years who were discharged from three COVID-19-designated hospitals in Wuhan, China, from February 10 to April 10, 2020. In total, 466 uninfected spouses of COVID-19 patients were selected as controls. The current cognitive status was assessed using a Chinese version of the Telephone Interview of Cognitive Status-40 (TICS-40) and the longitudinal cognitive decline was assessed using an Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE). Cognitive assessments were performed 6 months after patient discharge. RESULTS: Compared with controls, COVID-19 patients had lower TICS-40 scores and higher IQCODE scores [TICS-40 median (IQR): 29 (25 to 32) vs. 30 (26 to 33), p < 0.001; IQCODE median (IQR): 3.19 (3.00 to 3.63) vs. 3.06 (3.00 to 3.38), p < 0.001]. Severe COVID-19 patients had lower TICS-40 scores and higher IQCODE scores than non-severe COVID-19 patients [TICS-40 median (IQR): 24 (18 to 28) vs. 30 (26 to 33), p < 0.001; IQCODE median (IQR): 3.63 (3.13 to 4.31) vs. 3.13 (3.00 to 3.56), p < 0.001] and controls [TICS-40 median (IQR): 24 (18 to 28) vs. 30 (26 to 33), p < 0.001; IQCODE median (IQR) 3.63 (3.13 to 4.31) vs. 3.06 (3.00 to 3.38), p < 0.001]. Severe COVID-19 patients had a higher proportion of cases with current cognitive impairment and longitudinal cognitive decline than non-severe COVID-19 patients [dementia: 25 (10.50 %) vs. 9 (0.69 %), p < 0.001; Mild cognitive impairment (MCI): 60 (25.21 %) vs. 63 (4.84 %), p < 0.001] and controls [dementia: 25 (10.50 %) vs. 0 (0 %), p < 0.001; MCI: 60 (25.21 %) vs. 20 (4.29 %), p < 0.001)]. COVID-19 severity, delirium and COPD were risk factors of current cognitive impairment. Low education level, severe COVID-19, delirium, hypertension and COPD were risk factors of longitudinal cognitive decline. CONCLUSIONS: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is associated with an increased risk of long-term cognitive decline in elderly population. COVID-19 patients, especially severe patients, should be intensively monitored for post-infection cognitive decline.


Assuntos
COVID-19/complicações , Disfunção Cognitiva/virologia , Idoso , Idoso de 80 Anos ou mais , COVID-19/epidemiologia , China , Disfunção Cognitiva/epidemiologia , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , SARS-CoV-2 , Síndrome de COVID-19 Pós-Aguda
17.
18.
Int J Mol Sci ; 11(2): 719-730, 2010 Feb 11.
Artigo em Inglês | MEDLINE | ID: mdl-20386663

RESUMO

The implantation process is complex, requiring reciprocal interactions between implantation-competent blastocysts and the receptive uterus. There were reports to show that some microRNAs (miRNAs) may play a key role during embryo implantation in mouse. However, the miR-320 expression profiles in the rat uterus during peri-implantation are unknown. In the present study, we found that the expression level of miR-320 was lower on day 5 of gestation (g.d. 5) in rats than g.d.3 and g.d.4 and restored gradually from g.d.6. MiR-320 was specifically localized in glandular and luminal epithelia and decidua. The expression of miR-320 was not significantly different in the pseudopregnant uterus and decreased in the uteri of rats subjected to activation of delayed implantation. Artificial decidualization and treatment with progesterone increased the miR-320 expression. Thus, miR-320 was differentially expressed in the rat uterus during implantation. The expression level was affected by active blastocysts and decidualization during the window of implantation. Steroid hormones, progesterone stimulated miR-320 expression.


Assuntos
Implantação do Embrião , Regulação da Expressão Gênica/efeitos dos fármacos , MicroRNAs/genética , MicroRNAs/metabolismo , Útero/metabolismo , Animais , Blastocisto/metabolismo , Decídua/metabolismo , Implantação do Embrião/genética , Feminino , Regulação da Expressão Gênica no Desenvolvimento/efeitos dos fármacos , Idade Gestacional , Gravidez , Progesterona/farmacologia , Progestinas/farmacologia , Ratos , Ratos Sprague-Dawley , Útero/efeitos dos fármacos
19.
Cell Physiol Biochem ; 23(4-6): 347-58, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-19471102

RESUMO

BACKGROUND: MicroRNAs (miRNAs) are small noncoding RNAs whose function as modulators of gene expression is crucial for the proper control of cell growth. Although many microRNAs were found to express in central nervous system (CNS), the role of the regulatory networks in which they are involved and their function in the pathological process of nerve cells are only just emerging. In the present study, the possible mechanisms by which one neuronal miRNAs, miR-125b, affected the growth of nervous cells were investigated using in vitro cell line model. METHODS: The expression pattern of miR-125b in ATRA-treated human glioma cell lines was detected by Northern blotting and in situ localization. The effect of miR-125b on the proliferation and apoptosis of human glioma cells was analyzed by MTS assay, TUNEL and Flow cytometry analysis. In addition, the identification of target gene of miR-125b was studied by dual-luciferase activity assay and Immunoblot Analysis. RESULTS: We found differential expression of miR-125b in 1.0 microM all-trans-retinoic acid (ATRA)-treated human glioma cell lines. Up-regulation of miR-125b partially restored cell viability and inhibited cell apoptosis in U343 cells treated by ATRA. Down-regulation of miR-125b decreased human glioma cells proliferation and enhanced the sensitivity of human glioma cells to ATRA-induced apoptosis. In addition, we found an inverse relationship between the expression of miR-125b and the cell apoptosis-related protein Bcl-2 modifying factor (Bmf), and miR-125b can interact with 3'-untranslated region (UTR) of Bmf. CONCLUSION: These findings indicate that overexpression of miR-125b promotes human glioma cell proliferation and inhibits ATRA-induced cell apoptosis and low expression of miR-125b sensitizes cells to ATRA-induced apoptosis. BMF may play an important role in the process of miR-125b influencing cell apoptosis.


Assuntos
Proteínas Adaptadoras de Transdução de Sinal/metabolismo , Apoptose , Proliferação de Células , Glioma/metabolismo , MicroRNAs/metabolismo , Proteínas Adaptadoras de Transdução de Sinal/genética , Sequência de Bases , Regulação para Baixo , Glioma/genética , Humanos , MicroRNAs/genética , Proteínas Proto-Oncogênicas c-bcl-2/metabolismo , Tretinoína/farmacologia , Células Tumorais Cultivadas , Proteína X Associada a bcl-2/metabolismo
20.
Planta Med ; 75(15): 1597-601, 2009 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-19579183

RESUMO

Two new and three previously known CIS-clerodane diterpenoids were isolated from the wild liverwort Gottschelia schizopleura (Jungermanniales, Jungermanniaceae). Their structures were established on the basis of spectroscopic analysis, especially 1D and 2D NMR data. The cytotoxic activities of compounds 1- 5 were evaluated against liver hepatoblastoma (HEP-G2), lung carcinoma (A549), breast ductal carcinoma (MDA-MB-435), and colon adenocarcinoma (LOVO) cell lines. Compound 1 showed moderate inhibition against MDA-MB-435 and LOVO cells.


Assuntos
Antineoplásicos Fitogênicos/isolamento & purificação , Hepatófitas/química , Neoplasias/tratamento farmacológico , Extratos Vegetais/química , Antineoplásicos Fitogênicos/farmacologia , Antineoplásicos Fitogênicos/uso terapêutico , Linhagem Celular Tumoral , Diterpenos/isolamento & purificação , Diterpenos/farmacologia , Diterpenos/uso terapêutico , Diterpenos Clerodânicos/isolamento & purificação , Diterpenos Clerodânicos/farmacologia , Diterpenos Clerodânicos/uso terapêutico , Humanos , Estrutura Molecular , Extratos Vegetais/farmacologia , Extratos Vegetais/uso terapêutico
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