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1.
Theor Appl Genet ; 137(5): 112, 2024 Apr 25.
Artigo em Inglês | MEDLINE | ID: mdl-38662228

RESUMO

KEY MESSAGE: Two key genes Zm00001d021232 and Zm00001d048138 were identified by QTL mapping and GWAS. Additionally, they were verified to be significantly associated with maize husk number (HN) using gene-based association study. As a by-product of maize production, maize husk is an important industrial raw material. Husk layer number (HN) is an important trait that affects the yield of maize husk. However, the genetic mechanism underlying HN remains unclear. Herein, a total of 13 quantitative trait loci (QTL) controlling HN were identified in an IBM Syn 10 DH population across different locations. Among these, three QTL were individually repeatedly detected in at least two environments. Meanwhile, 26 unique single nucleotide polymorphisms (SNPs) were detected to be significantly (p < 2.15 × 10-6) associated with HN in an association pool. Of these SNPs, three were simultaneously detected across multiple environments or environments and best linear unbiased prediction (BLUP). We focused on these environment-stable and population-common genetic loci for excavating the candidate genes responsible for maize HN. Finally, 173 initial candidate genes were identified, of which 22 were involved in both multicellular organism development and single-multicellular organism process and thus confirmed as the candidate genes for HN. Gene-based association analyses revealed that the variants in four genes were significantly (p < 0.01/N) correlated with HN, of which Zm00001d021232 and Zm00001d048138 were highly expressed in husks and early developing ears among different maize tissues. Our study contributes to the understanding of genetic and molecular mechanisms of maize husk yield and industrial development in the future.


Assuntos
Mapeamento Cromossômico , Fenótipo , Polimorfismo de Nucleotídeo Único , Locos de Características Quantitativas , Zea mays , Zea mays/genética , Zea mays/crescimento & desenvolvimento , Mapeamento Cromossômico/métodos , Genes de Plantas , Estudo de Associação Genômica Ampla , Estudos de Associação Genética , Desequilíbrio de Ligação , Genótipo
2.
BMC Infect Dis ; 24(1): 57, 2024 Jan 08.
Artigo em Inglês | MEDLINE | ID: mdl-38191304

RESUMO

BACKGROUND AND AIM: Two oral antivirals (Nirmatrelvir- ritonavir and Azvudine) are widely used in China practice during the Omicron wave of the pandemic. However, little evidence regarding the real-world effectiveness of these two oral antivirals in in-hospital patients. We aimed to evaluate the clinical effectiveness of nirmatrelvir-ritonavir versus azvudine among adult hospitalized patients with COVID-19. METHODS: This retrospective cohort study used data from three Chinese PLA General Hospital medical centres. Hospitalized patients with COVID-19 treated with azvudine or nirmatrelvir-ritonavir from Dec 10, 2022, to February 20, 2023, and did not require invasive ventilation support on admission were eligible for inclusion. RESULTS: After exclusions and propensity-score matching, the final analysis included 486 azvudine recipients and 486 nirmatrelvir-ritonavir recipients. By 28 days of initiation of the antivirus treatment, the crude incidence rate of all-cause death was similar in both types of antivirus treatment (nirmatrelvir-ritonavir group 2.8 events 1000 person-days [95% CI, 2.1-3.6] vs azvudine group 3.4 events/1000 person-days [95% CI, 2.6-4.3], P = 0.38). Landmark analysis showed that all-cause death was lower in the nirmatrelvir-ritonavir (3.5%) group than the azvudine (6.8%, P = 0.029) within the initial 10-day admission period, while no significant difference was observed for results between 10 and 28 days follow-up. There was no significant difference between the nirmatrelvir-ritonavir group and the azvudine group in cumulative incidence of the composite disease progression event (8.6% with nirmatrelvir-ritonavir vs. 10.1% with azvudine, HR, 1.22; 95% CI 0.80-1.86, P = 0.43). CONCLUSION: Among patients hospitalized with COVID-19 during the omicron wave in Beijing, similar in-hospital clinical outcomes on 28 days were observed between patients receiving nirmatrelvir-ritonavir and azvudine. However, it is worth noticing that nirmatrelvir-ritonavir appears to hold an advantage over azvudine in reducing early mortality. Further randomized controlled trials are needed to verify the efficacy of those two antivirus medications especially in early treatment.


Assuntos
COVID-19 , Adulto , Humanos , Estudos Retrospectivos , Ritonavir/uso terapêutico , Tratamento Farmacológico da COVID-19 , Pacientes Internados , Hospitais Gerais , Antivirais/uso terapêutico
3.
Zhonghua Yi Xue Yi Chuan Xue Za Zhi ; 41(1): 14-19, 2024 Jan 10.
Artigo em Zh | MEDLINE | ID: mdl-38171553

RESUMO

OBJECTIVE: To evaluate the feasibility of non-invasive prenatal testing (NIPT) for the screening of fetal chromosome aneuploidies in twin pregnancies. METHODS: A total of 2 745 women with twin-pregnancies were subjected for NIPT screening. Chromosomal karyotyping and chromosomal microarray analysis (CMA) were carried out on amniotic fluid samples from those with a high risk for fetal chromosome aneuploidies, and the diagnosis and pregnancy outcome were followed up. The sensitivity, specificity, positive predictive value and false positive rate of the NIPT were calculated. RESULTS: Compared with other chromosomal abnormalities, NIPT had a higher efficacy for trisomy 21 and sex chromosomal aneuploidy (SCA) in twin pregnancies (with sensitivity being 100%, 100%, and specificity being 99.93%, 99.9%, respectively). It is difficult to evaluate the efficacy for trisomies 18 and 13 due to the limited data. For chromosome microdeletions and microduplications spanning 15 ~ 21 Mb, NIPT also had a certain detection rate. Compared with women with natural conception, NIPT had a higher detection rate for those with twin pregnancies by assisted reproduction (P < 0.05). CONCLUSION: It is feasible to use NIPT for the detection of chromosome aneuploidies in women with twin pregnancies.


Assuntos
Síndrome de Down , Gravidez de Gêmeos , Gravidez , Feminino , Humanos , Diagnóstico Pré-Natal , Síndrome de Down/diagnóstico , Síndrome de Down/genética , Aberrações Cromossômicas , Aneuploidia , Síndrome da Trissomía do Cromossomo 18/genética , Trissomia
4.
Theor Appl Genet ; 136(4): 93, 2023 Apr 03.
Artigo em Inglês | MEDLINE | ID: mdl-37010631

RESUMO

KEY MESSAGE: Combined GWAS, WGCNA, and gene-based association studies identified the co-expression network and hub genes for maize EC induction. ZmARF23 bound to ZmSAUR15 promoter and regulated its expression, affecting EC induction. Embryonic callus (EC) induction in immature maize embryos shows high genotype dependence, which limits the application of genetic transformation in transgenic breeding and gene function elucidation in maize. Herein, we conducted a genome-wide association mapping (GWAS) for four EC induction-related traits, namely rate of embryonic callus induction (REC), increased callus diameter (ICD), ratio of shoot formation (RSF), and length of shoot (LS) across different environments. A total of 77 SNPs were significantly associated these traits under three environments and using the averages (across environments). Among these significant SNPs, five were simultaneously detected under multiple environments and 11 had respective phenotypic variation explained > 10%. A total of 257 genes were located in the linkage disequilibrium decay of these REC- and ICD-associated SNPs, of which 178 were responsive to EC induction. According to the expression values of the 178 genes, we performed a weighted gene co-expression network analysis (WGCNA) and revealed an EC induction-associated module and five hub genes. Hub gene-based association studies uncovered that the intragenic variations in GRMZM2G105473 and ZmARF23 influenced EC induction efficiency among different maize lines. Dual-luciferase reporter assay indicated that ZmARF23 bound to the promoter of a known causal gene (ZmSAUR15) for EC induction and positively regulated its expression on the transcription level. Our study will deepen the understanding of genetic and molecular mechanisms underlying EC induction and contribute to the use of genetic transformation in maize.


Assuntos
Estudo de Associação Genômica Ampla , Zea mays , Zea mays/genética , Zea mays/metabolismo , Melhoramento Vegetal , Mapeamento Cromossômico , Fenótipo , Polimorfismo de Nucleotídeo Único
5.
Theor Appl Genet ; 136(1): 12, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36662253

RESUMO

KEY MESSAGE: Combined linkage and association analysis revealed five co-localized genetic loci across multiple environments. The key gene Zm00001d026491 was further verified to influence leaf length by candidate gene association analysis. Leaf morphology and number determine the canopy structure and thus affect crop yield. Herein, the genetic basis and key genes for 25 leaf-related traits, including leaf lengths (LL), leaf widths (LW), and leaf areas (LA) of eight continuous leaves under the tassel, and the number of leaves above the primary ear (LAE), were dissected by using an association panel and a biparental population. Using an intermated B73 × Mo17 (IBM) Syn10 doubled haploid (DH) population, 290 quantitative trait loci (QTL) controlling these traits were detected across different locations, among which 115 QTL were individually repeatedly identified in at least two environments. Using the association panel, 165 unique significant single-nucleotide polymorphisms (SNPs) were associated with target traits (P < 2.15E-06), of which 35 were separately detected across multiple environments. In total, 42 pleiotropic QTL/SNPs (pQTL/SNPs) were responsible for at least two of the LL, LW, LA, and LAE traits across multiple environments. Combining the QTL mapping and association study, five unique SNPs were located within the confidence intervals of seven QTL, and 77 genes were identified based on the linkage disequilibrium regions of co-localized SNP loci. Gene-based association studies verified that the intragenic variants in the candidate gene Zm00001d026491 influenced LL of the third leaf counted from the top node. These findings will provide vital information to understanding the genetic basis of leaf-related traits and help to cultivate maize varieties with ideal plant architecture.


Assuntos
Locos de Características Quantitativas , Zea mays , Zea mays/genética , Ligação Genética , Mapeamento Cromossômico , Fenótipo , Polimorfismo de Nucleotídeo Único , Folhas de Planta/genética
6.
Chem Biodivers ; 20(7): e202300275, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37317928

RESUMO

Microorganisms produce a wealth of structurally diverse specialized metabolites with a remarkable range of biological activities. The Phomopsis sp. LGT-5 was obtained through tissue block and repeatedly crossed methods from Tripterygium wilfordii Hook. F. The antibacterial experiments of LGT-5 showed that it has high inhibitory activity against Staphylococcus aureus and Pseudomonas aeruginosa, and moderate inhibitory activity against Candida albicans. To research the generation of the antibacterial phenomenon of LGT-5 and provide support for further research and application, the whole genome sequencing (WGS) of LGT-5 was obtained by single-molecule real-time DNA sequencing platform Pacific Biosciences (PacBio) sequencing and Illumina paired-end sequencing. The final assembled LGT-5 genome is 54.79 Mb with a contig N50 of 290.07 kb; in addition, its secondary metabolites were detected through HPLC-Q-ToF-MS/MS. By comparing its MS/MS data, the secondary metabolites were analyzed based on visual network maps obtained on the Global Natural Products Social Molecular Networking (GNPS). The analysis results showed that the secondary metabolites of LGT-5 were triterpenes and various cyclic dipeptides.


Assuntos
Phomopsis , Espectrometria de Massas em Tandem , Cromatografia Líquida de Alta Pressão , Sequenciamento Completo do Genoma , Análise de Sequência de DNA
7.
Int J Mol Sci ; 23(23)2022 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-36499409

RESUMO

Ear shank length (ESL) has significant effects on grain yield and kernel dehydration rate in maize. Herein, linkage mapping and genome-wide association study were combined to reveal the genetic architecture of maize ESL. Sixteen quantitative trait loci (QTL) were identified in the segregation population, among which five were repeatedly detected across multiple environments. Meanwhile, 23 single nucleotide polymorphisms were associated with the ESL in the association panel, of which four were located in the QTL identified by linkage mapping and were designated as the population-common loci. A total of 42 genes residing in the linkage disequilibrium regions of these common variants and 12 of them were responsive to ear shank elongation. Of the 12 genes, five encode leucine-rich repeat receptor-like protein kinases, proline-rich proteins, and cyclin11, respectively, which were previously shown to regulate cell division, expansion, and elongation. Gene-based association analyses revealed that the variant located in Cyclin11 promoter affected the ESL among different lines. Cyclin11 showed the highest expression in the ear shank 15 days after silking among diverse tissues of maize, suggesting its role in modulating ESL. Our study contributes to the understanding of the genetic mechanism underlying maize ESL and genetic modification of maize dehydration rate and kernel yield.


Assuntos
Estudo de Associação Genômica Ampla , Zea mays , Zea mays/genética , Fenótipo , Mapeamento Cromossômico , Locos de Características Quantitativas , Polimorfismo de Nucleotídeo Único , Ligação Genética
8.
Chin J Traumatol ; 23(6): 356-362, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33289633

RESUMO

PURPOSE: By comparing the outcomes of total hip arthroplasty with hemiarthroplasty in elderly patients with a femoral neck fracture to investigate the one-year mortality, dislocation, infection, reoperation rate, and thromboembolic event. METHODS: The PubMed, EMBASE databases, and Cochrane library were systematically searched from the inception dates to April 1, 2020 for relevant randomized controlled trials in English language using the keywords: "total hip arthroplasty", "hemiarthroplasty" and "femoral neck fracture" to identify systematic reviews and meta-analyses. Two reviewers independently selected articles, extracted data, assessed the quality evidence and risk bias of included trials using the Cochrane Collaboration' stools, and discussed any disagreements. The third reviewer was consulted for any doubts or uncertainty. We derived risk ratios and 95% confidence intervals. Mortality was defined as the primary outcome. Secondary outcomes were other complications, dislocation, infection, reoperation rate, and thromboembolic event. RESULTS: This meta-analysis included 10 studies with 1419 patients, which indicated that there were no significant differences between hemiarthroplasty and total hip arthroplasty in reoperation, infection rate, and thromboembolic event. However, there was a lower mortality and dislocation rate association with total hip arthroplasty at the one-year follow-up. CONCLUSION: Based on our results, we found that total hip arthroplasty was better than hemiarthroplasty for a hip fracture at one-year follow-up.


Assuntos
Artroplastia de Quadril/métodos , Fraturas do Colo Femoral/cirurgia , Hemiartroplastia/métodos , Idoso , Idoso de 80 Anos ou mais , Feminino , Fraturas do Colo Femoral/mortalidade , Seguimentos , Humanos , Masculino , Complicações Pós-Operatórias/epidemiologia , Reoperação/estatística & dados numéricos , Infecção da Ferida Cirúrgica/epidemiologia , Tromboembolia/epidemiologia , Fatores de Tempo , Resultado do Tratamento
9.
Zhonghua Yi Xue Yi Chuan Xue Za Zhi ; 37(7): 771-773, 2020 Jul 10.
Artigo em Zh | MEDLINE | ID: mdl-32619262

RESUMO

OBJECTIVE: To carry out G-banded chromosomal karyotyping and chromosomal microarray analysis (CMA) for a fetus featuring multiple malformations. METHODS: The fetus was found to have increased nuchal thickness, generalized edema, asymmetric lower limbs, tetralogy of Fallot, nasal bone anomaly and cleft palate. Following amniocentesis, G-band karyotyping and CMA were carried out. RESULTS: The fetus had a karyotype of 47,XX,+i(12)(p10) [14]/46,XX[6]. CMA has identified a 33.9 Mb duplication at 12p13.33-p11.1, which was suggestive of tetrasomy 12p. CONCLUSION: Combined chromosomal karyotyping and CMA can delineate the origin of abnormal chromosomal fragments during prenatal diagnosis. The fetus was diagnosed with Pallister-Killian syndrome.


Assuntos
Transtornos Cromossômicos , Diagnóstico Pré-Natal , Amniocentese , Transtornos Cromossômicos/diagnóstico , Transtornos Cromossômicos/genética , Cromossomos Humanos Par 12/genética , Feminino , Humanos , Cariotipagem , Gravidez
10.
Zhonghua Yi Xue Yi Chuan Xue Za Zhi ; 36(5): 495-497, 2019 May 10.
Artigo em Zh | MEDLINE | ID: mdl-31030442

RESUMO

OBJECTIVE: To carry out genetic diagnosis for a pregnant woman and her fetus. METHODS: Chromosome G-banding and microarray analysis were used to analyze the woman featuring dysmorphism and recognition defect and her fetus featuring developmental retardation. RESULTS: The karyotype of the woman was normal, but chromosome microarray analysis showed that she has carried a 1423 kb deletion at 7q11.23 region. Her fetus has carried a 1530 kb deletion at the same region. Both individuals were diagnosed as Williams-Beuren syndrome. CONCLUSION: Familiarity with its clinical features and proper selection of genetic testing methods are crucial for the diagnosis of Williams-Beuren syndrome.


Assuntos
Síndrome de Williams , Criança , Bandeamento Cromossômico , Cromossomos Humanos Par 7 , Feminino , Testes Genéticos , Humanos , Cariotipagem , Gravidez , Diagnóstico Pré-Natal , Síndrome de Williams/diagnóstico
11.
Zhonghua Yi Xue Yi Chuan Xue Za Zhi ; 35(2): 228-231, 2018 Apr 10.
Artigo em Zh | MEDLINE | ID: mdl-29652998

RESUMO

OBJECTIVE: To assess the accuracy of quantitative fluorescence PCR(QF-PCR) for the detection of fetal chromosomal aneuploidies and its values for prenatal diagnosis. METHODS: QF-PCR and chromosomal karyotyping were used to analyze 6066 amniotic fluid samples derived from 6034 pregnant women. RESULTS: Both QF-PCR and karyotyping analysis have detected 135 cases of fetal aneuploidies involving chromosomes 21, 18, 13, X, and Y. The QF-PCR assay was also successful in 67 cases for which amniotic fluid culture has failed. Furthermore, it has identified maternal cell contamination in 7 cases. By determining the consistency of short tandem repeat (STR) sites, the QF-PCR assay has identified 22 dizygotic twins among 32 twins with double chorions and double amniotic sacs. In 12 cases, it has signaled numerical chromosomal aberration by critical or partial abnormal values for the fluorescence peak area ratio, which were verified by karyotyping analysis as mosaicisms of chromosome aneuploidies. CONCLUSION: The QF-PCR can provide an useful supplement for chromosomal karyotyping and has an important role in rapid prenatal diagnosis.


Assuntos
Aneuploidia , Reação em Cadeia da Polimerase/métodos , Diagnóstico Pré-Natal/métodos , Adolescente , Adulto , Feminino , Fluorescência , Humanos , Cariotipagem , Repetições de Microssatélites , Pessoa de Meia-Idade , Gravidez , Adulto Jovem
12.
Sichuan Da Xue Xue Bao Yi Xue Ban ; 48(1): 101-106, 2017 Jan.
Artigo em Zh | MEDLINE | ID: mdl-28612568

RESUMO

OBJECTIVES: To determine the prevalence and distribution of hepatitis B virus (HBV) infection in Mianyang. METHODS: Data were extracted from the 12th five-year National Science and Technology Major Projects-Integrated Prevention and Control of Major Infectious Diseases in Mianyang. A two-level logistic regression model was established to determine factors associated with HBV infection. RESULTS: About 4.91% of people in Mianyang were HBsAg positive, which increased with age. HBV infection showed aggregation at townships. Governmental spending ≥¥1 000 000 on public health was a protective factor in the regression model; whereas, age, male gender, medical workers, absent from HBV vaccination, more than 80 g/d alcohol consumption were risk factors of HBV infection. CONCLUSIONS: Mianyang had medium level of HBV infections. But high HBV prevalence can be found in some townships. The known behavior risk factors all exist in Mianyang, which can serve as a screening tool for identifying high risk populations.


Assuntos
Hepatite B/epidemiologia , China/epidemiologia , Estudos Transversais , Feminino , Vírus da Hepatite B , Humanos , Masculino , Prevalência , Fatores de Risco
13.
J Biol Inorg Chem ; 21(7): 807-24, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27465977

RESUMO

A series of water-soluble CO-releasing molecules, [Mn(CO)3NH2CHRCO2]2 (1-3), [M(CO)3Br[(Py-C = N)(Gly) n CO2] (M = Mn, Re, 4-7), Mn(CO)4[S2CNC m H n CO2] (8-12), were synthesized and characterized by (1)H NMR, IR and ESI-HRMS. The stability of all the complexes in solution was evaluated by means of UV, IR and (1)H NMR. Among all the complexes, complex 4 and complex 8 were stable in H2O, acidic aqueous solution and basic media; complex 1 was stable in acidic aqueous solution and weak basic media (pH < 9.4). The assays showed that each complex has CO-release ability; excess sodium dithionite can enhance CO release. Among them, complexes 8-12 were fast CO-releasers. In the test of the cell proliferation, all the complexes showed anti-proliferative activities for HeLa and HepG2. In particular, complex 8 displayed a 3.5-fold anti-proliferative activity on HeLa cells (IC50 23.13 µM) and fivefold on HepG2 cells (34.00 µM) compared with 5-FU. What is more, the complexes distinctly influenced cell cycle and promoted cell apoptosis; complex 1 arrested HeLa cells in S phase, whereas complex 4 and complex 8 arrested in G2/M phase; all the complexes induced HeLa cells "Early apoptosis". In addition, all complexes 1, 4 and 8 decreased intracellular nitrite levels, and complex 8 was stronger than both of the others. All these data demonstrate that complex 8 has potential to be a drug candidate. Three different categories of water-soluble CORMs 1-12 were synthesized, and their stability were evaluated. The biological activities were preliminarily evaluated. This includes anti-proliferation and anti-inflammatory properties.


Assuntos
Manganês/química , Compostos Organometálicos/síntese química , Compostos Organometálicos/farmacologia , Água/química , Anti-Inflamatórios/síntese química , Anti-Inflamatórios/química , Anti-Inflamatórios/farmacologia , Antineoplásicos/síntese química , Antineoplásicos/química , Antineoplásicos/farmacologia , Apoptose/efeitos dos fármacos , Ciclo Celular/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Técnicas de Química Sintética , Células HeLa , Células Hep G2 , Humanos , Compostos Organometálicos/química , Solubilidade
14.
Yao Xue Xue Bao ; 51(3): 425-33, 2016 03.
Artigo em Zh | MEDLINE | ID: mdl-29859024

RESUMO

Complexes containing cobalt and carbon monoxide ligands, CO releasing molecules(CORMs), have the potential of anti-tumor and anti-inflammatory. In this paper, three hybrid CORMs 1-3 were synthesized and tested for their toxicology in vivo and bioactivities. The results suggest that the complexes have a long half-life in the range of 43-53 min; their oral LD(50) to mouse are between 1 500 mg·kg(-1) and 5 000 mg·kg(-1). After the successive administration, complex 1 exhibited a toxic activity in rats' liver, and induced an injury to liver cells. Complex 1 had a strong growth inhibition activity(IC(50) 36.20 µmol·L(-1) and 39.25 µmol·L(-1)) in both He La cells and Hep G2 cells, complex 2 displayed a lower activity in the inhibition of He La cells proliferation than the control 5-FU(IC(50) 114.19 µmol·L(-1)), but had a higher activity in the inhibition of Hep G2 cells than the control 5-FU(IC(50) 171.34 µmol·L(-1)). The anti-inflammatory study suggests that all of them reduce intracellular nitrite level, complexes 1 and 2 have a stronger activity than complex 3. Their anti-inflammatory activity attributes to the CO molecules of the CORMs, which was confirmed by comparison with the corresponding ligand.


Assuntos
Monóxido de Carbono/toxicidade , Cobalto/toxicidade , Complexos de Coordenação/toxicidade , Animais , Anti-Inflamatórios , Proliferação de Células , Células HeLa , Células Hep G2 , Humanos , Camundongos , Ratos
15.
Gynecol Obstet Invest ; 80(2): 106-12, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25792174

RESUMO

AIMS: To investigate the impacts of cytomegalovirus (CMV) viral load, TORCH (toxoplasmosis, others, rubella, CMV and herpes) coinfections, CMV glycoprotein B (gB) genotypes and maternal genetic polymorphisms on pregnancy outcomes among CMV-infected women. METHODS: A total of 731 CMV-infected pregnant women (634 and 97 with normal and adverse pregnancy outcomes, respectively) were recruited. CMV load quantification and screening of TORCH coinfections were performed by using real-time polymerase chain reaction (PCR) and immunodetection techniques, respectively. Genotyping of CMV gB and maternal NFKB1 -94 ins/del, NFKBIA -826C/T and -881A/G polymorphisms was performed by using PCR-restriction fragment length polymorphism. RESULTS: We found that the mean CMV viral load in women with adverse pregnancy outcomes was significantly higher than that in women with normal outcomes at all pregnancy stages (p < 0.01). We also found that TORCH coinfections resulted in a 1.65-fold (95% CI = 1.00-2.73) increase in the risk of adverse pregnancy outcomes (p = 0.05). Additionally, we noticed no significant difference in the distribution of CMV gB genotypes between women with normal and adverse pregnancy outcomes (p = 0.42). We also observed that the ins/ins variant genotype of the NFKB1 polymorphism could reduce the risk of adverse pregnancy outcomes (OR = 0.38, 95% CI = 0.15-0.98; p = 0.04). CONCLUSION: CMV viral load, TORCH coinfections and maternal NFKB1 polymorphism could influence pregnancy outcomes among CMV-infected women.


Assuntos
Infecções por Citomegalovirus/virologia , Citomegalovirus/genética , Proteínas I-kappa B/genética , Subunidade p50 de NF-kappa B/genética , Complicações Infecciosas na Gravidez/virologia , Resultado da Gravidez , Proteínas do Envelope Viral/genética , Carga Viral/estatística & dados numéricos , Adulto , Comorbidade , Infecções por Citomegalovirus/epidemiologia , Feminino , Genótipo , Humanos , Inibidor de NF-kappaB alfa , Polimorfismo Genético , Gravidez , Complicações Infecciosas na Gravidez/epidemiologia , Resultado da Gravidez/epidemiologia , Adulto Jovem
16.
BMC Complement Altern Med ; 15: 311, 2015 Sep 07.
Artigo em Inglês | MEDLINE | ID: mdl-26347072

RESUMO

BACKGROUND: This study was conducted to investigate the protective effect of Tongmai oral liquid on arteriovenous fistula function and to provide an effective method to promote fistula maturation. METHODS: Fifteen female and fifteen male SPF New Zealand rabbits were randomly allocated into 3 groups including control, Aspirin and Tongmai oral liquid groups. A side-to-side femoral arteriovenous fistula was established in each rabbit and then animals were treated with Aspirin or Tongmai oral liquid for 2 weeks. The concentrations of circulating ET-1 and NO were determined before and after operation (on preoperative day, operative day, post-D1, post-D3, post-D7 and post-D15), respectively. Blood flow of the fistula stoma and contralateral artery and vein was determined on the 15th postoperative day. Last, the fistula stoma was dissected to observe patency, thrombosis and adhesion with surrounding tissues. RESULTS: 28 rabbits survived during the surgical process and the following 15-day observational period. Tissue adhesion of arteriovenous fistula with surrounding tissues was improved and fistula thrombosis was reduced by treatment with Tongmai oral liquid. NO concentration decreased to a different extent after vascular surgery. Tongmai oral liquid failed to regulate the equilibrium between NO and ET-1, but it improved blood flow of fistula stoma, as compared to control and Aspirin groups. Blood flow of fistula stoma in the three groups was lower than that of the contralateral femoral artery. CONCLUSIONS: Tongmai oral liquid improved the function of femoral ateriovenous fistula in the rabbit model by increasing blood flow and reducing thrombosis, probably not by regulating the dynamic equilibrium between NO and ET-1.


Assuntos
Fístula Arteriovenosa , Medicamentos de Ervas Chinesas/farmacologia , Artéria Femoral , Animais , Feminino , Artéria Femoral/anormalidades , Artéria Femoral/efeitos dos fármacos , Masculino , Coelhos , Fluxo Sanguíneo Regional/efeitos dos fármacos
17.
Zhonghua Yi Xue Yi Chuan Xue Za Zhi ; 32(2): 229-32, 2015 Apr.
Artigo em Zh | MEDLINE | ID: mdl-25863093

RESUMO

OBJECTIVE: To analyze 81 spontaneous abortion samples with fluorescence in situ hybridization (FISH). METHODS: Chromosome 13, 21, 16, 22, 18, X and Y probes were used to detect the samples. RESULTS: FISH was successful in 80 cases (98.77%). Among these, 35 (43.75%) had an abnormal karyotype, which included 19 autosomal aneuploidies, 6 sex chromosome aneuploidies, 9 triploidies and 1 tetraploidy. CONCLUSION: FISH is a rapid and easy method for detecting chromosomal aneuploidies in spontaneous abortion samples, and has a higher detection rate in early spontaneous abortion samples.


Assuntos
Aborto Espontâneo/genética , Aneuploidia , Cromossomos de Mamíferos/genética , Doenças Fetais/genética , Aborto Espontâneo/diagnóstico , Adulto , Aberrações Cromossômicas , Feminino , Doenças Fetais/diagnóstico , Humanos , Hibridização in Situ Fluorescente , Masculino , Pessoa de Meia-Idade , Gravidez , Diagnóstico Pré-Natal , Adulto Jovem
18.
Zhong Yao Cai ; 38(12): 2541-2, 2015 Dec.
Artigo em Zh | MEDLINE | ID: mdl-27352535

RESUMO

OBJECTIVE: To study the chemical constituents of traditional Mongolian medicine Usnea longissima. METHODS: The compounds were isolated and purified by the methods of solvent extraction and chromatographic technique, and their structures were identified on the basis of the analyses of spectral data. RESULTS: Three compounds were obtained and identified as 4-hydroxy-2-[ (2-hydroxy-4-methoxy-6-methylbenzoyl) oxy]-6-methylbenzoic acid (1), dibutyl phthalate (2) and diisobutyl phthalate (3). CONCLUSION: Compound 1 is a new compound and named as isoevernic acid, compounds 2 and 3 are isolated from Usnea longissima for the first time.


Assuntos
Medicina Tradicional da Mongólia , Compostos Fitoquímicos/análise , Plantas Medicinais/química , Usnea/química
19.
Zhong Yao Cai ; 38(11): 2321-3, 2015 Nov.
Artigo em Zh | MEDLINE | ID: mdl-27356384

RESUMO

OBJECTIVE: To study the chemical constituents of Mongolian medicine Halenia corniculata. METHODS: Positive phase and reversed phase silica gel, as well as Sephadex LH-20 methods were used to separate and purify. The structure of the isolated constituents was identified according to the NMR spectroscopy data and the literature data. RESULTS: Nine compounds were isolated from 95% ethanol extracts of petroleum ether part of Halenia corniculata and identified as: 1-hydroxy-2,3,4,6-tetramethoxyxanthone (1), 1-hydroxy-2,3, 5-trimethoxyxanthone (2) 1-hydroxy-3,7-dimethoxyxanthone (3), 1-hydroxy-3,5,6,7,8-pentamethoxyxanthone (4), 1-hydroxy-2,3,4, 7-tetramethoxyxanthone (5), 1-hydroxy-3,5-dimethoxyxanthone (6),1-hydroxy-2,3,4,5,7-pentamethoxyxanthone (7), palmitic acid (8) and ß-sitosterol (9). CONCLUSION: Compounds 3, 4 and 8 are isolated from this genus for the first time, Compound 1 is isolated from this plant for the first time.


Assuntos
Gentianaceae/química , Compostos Fitoquímicos/análise , Extratos Vegetais/química , Alcanos , Medicina Tradicional da Mongólia , Compostos Fitoquímicos/isolamento & purificação , Sitosteroides/análise , Sitosteroides/isolamento & purificação , Solventes , Xantonas/análise , Xantonas/isolamento & purificação
20.
PeerJ ; 12: e16465, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38188146

RESUMO

Excessive induction of inflammatory and immune responses is widely considered as one of vital factors contributing to the pathogenesis and progression of central nervous system (CNS) diseases. Neutrophils are well-studied members of inflammatory and immune cell family, contributing to the innate and adaptive immunity. Neutrophil-released neutrophil extracellular traps (NETs) play an important role in the regulation of various kinds of diseases, including CNS diseases. In this review, current knowledge on the biological features of NETs will be introduced. In addition, the role of NETs in several popular and well-studied CNS diseases including cerebral stroke, Alzheimer's disease, multiple sclerosis, amyotrophic lateral sclerosis (ALS), and neurological cancers will be described and discussed through the reviewing of previous related studies.


Assuntos
Doenças do Sistema Nervoso Central , Armadilhas Extracelulares , Esclerose Múltipla , Humanos , Sistema Nervoso Central , Neutrófilos
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