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1.
Int J Mol Sci ; 20(18)2019 Sep 06.
Artigo em Inglês | MEDLINE | ID: mdl-31500111

RESUMO

Purple turnip Brassica rapa ssp. rapa is highly appreciated by consumers but the metabolites and molecular mechanisms underlying the root skin pigmentation remain open to study. Herein, we analyzed the anthocyanin composition in purple turnip (PT) and green turnip (GT) at five developmental stages. A total of 21 anthocyanins were detected and classified into the six major anthocynanin aglycones. Distinctly, PT contains 20 times higher levels of anthocyanins than GT, which explain the difference in the root skin pigmentation. We further sequenced the transcriptomes and analyzed the differentially expressed genes between the two turnips. We found that PT essentially diverts dihydroflavonols to the biosynthesis of anthocyanins over flavonols biosynthesis by strongly down-regulating one flavonol synthase gene, while strikingly up-regulating dihydroflavonol 4-reductase (DFR), anthocyanidin synthase and UDP-glucose: flavonoid-3-O-glucosyltransferase genes as compared to GT. Moreover, a nonsense mutation identified in the coding sequence of the DFR gene may lead to a nonfunctional protein, adding another hurdle to the accumulation of anthocyanin in GT. We also uncovered several key members of MYB, bHLH and WRKY families as the putative main drivers of transcriptional changes between the two turnips. Overall, this study provides new tools for modifying anthocyanin content and improving turnip nutritional quality.

2.
Gene ; 697: 48-56, 2019 May 20.
Artigo em Inglês | MEDLINE | ID: mdl-30790652

RESUMO

BACKGROUND: Autosomal recessive disorder is closely correlated with congenital fetal malformation. The mutation of WDR35 may lead to short rib-polydactyly syndrome (SRP), asphyxiating thoracic dystrophy (ATD, Jeune syndrome) and Ellis van Creveld syndrome. The purpose of this study is to investigate the role of WDR35 in fetal anomaly. RESULTS: The fetuses presented malformation with abnormal head shape, cardiac dilatation, pericardial effusion, and non-displayed left pulmonary artery and left lung. After the detection of genomic DNA (gDNA) in amniotic fluid cells (AFC), chromosomal rearrangement was found in arr[hg19] 2p25.3p23.3. It was revealed through multiple PCR-DHPLC that MYCN, WDR35, LPIN1, ODC1, KLF11 and NBAS contained duplicated copy numbers in 2p25.3p23.3. AF-MSCs were mostly positive for CD44, CD105, negative for CD34 and CD14. Western Blot test showed that WDR35-encoded protein was decreased in the patients' AFC compared to that in normal pregnant women. In the patients' amniotic fluid-derived mesenchymal stem cells (AF-MSCs), WDR35 overexpression could repair cilia formation, and the overexpression of WDR35 or Gli2 could significantly enhance ALP activity and expressions of osteogenic differentiation marker genes, including RUNXE2, OCN, BSP and ALP. However, WDR35 silencing in C3H10T1/2 cells could remarkably inhibit cilia formation and osteogenic differentiation. This inhibitory effect could be attenuated by Gli2 overexpression. CONCLUSIONS: The results demonstrated that copy number variation (CNV) of WDR35 may lead to skeletal dysplasia and fetal anomaly, and that down-regulated WDR35 may damage the cilia formation and sequentially indirectly regulate Gli signal, which would eventually result in negative regulation of osteogenic differentiation.


Assuntos
Doenças do Desenvolvimento Ósseo/genética , Osteogênese/fisiologia , Proteínas/genética , Adulto , Líquido Amniótico/química , Líquido Amniótico/citologia , Animais , Doenças do Desenvolvimento Ósseo/metabolismo , Diferenciação Celular/fisiologia , Cílios/genética , Cílios/fisiologia , Variações do Número de Cópias de DNA , Feminino , Desenvolvimento Fetal/genética , Proteínas Hedgehog , Humanos , Células-Tronco Mesenquimais/patologia , Camundongos , Camundongos Endogâmicos C3H , Fenótipo , Polimorfismo de Nucleotídeo Único , Gravidez , Proteínas/metabolismo
3.
J Obstet Gynaecol ; 39(1): 74-81, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29884103

RESUMO

To assess the effect of cervical conisation on pregnancy outcome, a literature search strategy was conducted to identify all of the references lists of the relevant studies. The fixed or random effect model was used to calculate pooled RRs on the basis of heterogeneity. Twenty-seven publications with n cases and m controls were included in the meta-analysis. The results showed that conisation was associated with a higher risk of a preterm delivery (p = .010), PROM (p = .008), and a lower birth weight (p < .001) in overall effect. The subgroup analysis showed that CKC was associated with a significantly increased risk of a preterm delivery (p < .001), and a lower birth weight (p< .001). LLETZ was associated with preterm delivery (p = .004) and a lower birth weight (p = .020). The results suggested that cervical conisation increases the risk of a preterm delivery, PROM, and a lower birth weight, especially in a CKC and LLEETZ procedure. Impact statement What is already known on this subject? Currently, the three main excisional procedures for cervical intraepithelial neoplasia (CIN) treatment are laser conisation, cold-knife conisation (CKC), and a large loop excision of the transformation zone (LLETZ). CKC and LEEP/LLETZ were significantly associated with a preterm delivery and low birth weight, and that former was associated with higher relative risks than the latter one. What do the results of this study add? The present results showed that conisation was associated with a higher risk of a preterm delivery, PROM, and a lower birth weight in overall effect. A subgroup analysis showed that CKC was associated with a significantly increased risk of a preterm delivery, and a lower birth weight. LLETZ was associated with a preterm delivery and lower birth weight. What are the implications of these findings for clinical practice and/or further research? This study is of clinical significance by showing that cervical conisation increases the risk of preterm delivery, PROM, and a lower birth weight, especially in a CKC and a LLEETZ procedure.


Assuntos
Colo do Útero/cirurgia , Conização/efeitos adversos , Resultado da Gravidez/epidemiologia , Nascimento Prematuro/etiologia , Estudos de Casos e Controles , Neoplasia Intraepitelial Cervical/cirurgia , Feminino , Humanos , Recém-Nascido de Baixo Peso , Gravidez , Fatores de Risco , Neoplasias do Colo do Útero/cirurgia
4.
Zhongguo Dang Dai Er Ke Za Zhi ; 14(9): 661-3, 2012 Sep.
Artigo em Chinês | MEDLINE | ID: mdl-22989433

RESUMO

OBJECTIVE: To explore the association between chorioamnionitis and brain injury in preterm infants. METHODS: A total of 88 preterm infants (28-34 weeks), who were born between June 2008 and June 2011, were divided into a case group (n=41) and a control group (n=47) according to whether or not they had chorioamnionitis. All the infants were examined by brain ultrasonography periodically after birth and underwent brain diffusion weighted imaging (DWI) between 3 and 7 days after birth. The two groups were compared in terms of the incidence of periventricular leukomalacia (PVL) and periventricular and intraventricular hemorrhage (PVH-IVH) by brain magnetic resonance imaging (MRI) at the corrected gestational age of 40 weeks. RESULTS: There was statistical significance in the incidence of PVL between the case and the control groups (32% vs 6%; P<0.05), but no significant difference in the incidence of PVH-IVH between the two groups (27% vs 23%; P>0.05). CONCLUSIONS: Chorioamnionitis is associated with brain injury in preterm infants, increasing the incidence of PVL but having little influence over the incidence of PVH-IVH.


Assuntos
Hemorragia Cerebral/epidemiologia , Corioamnionite , Leucomalácia Periventricular/epidemiologia , Imagem de Difusão por Ressonância Magnética , Feminino , Humanos , Incidência , Recém-Nascido , Recém-Nascido Prematuro , Masculino , Gravidez
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