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1.
Medicina (Kaunas) ; 59(10)2023 Sep 27.
Artigo em Inglês | MEDLINE | ID: mdl-37893451

RESUMO

Background: Chronic ocular graft-versus-host disease (oGVHD) is a common ocular complication following allogeneic hematopoietic stem cell transplantation (allo-HSCT), characterized by progressive inflammation of the ocular surface and refractory dry eye. In severe cases, sterile corneal perforation can occur, which poses a significant challenge, due to the low survival rate of grafts after corneal transplantation. Case Presentation: A 47-year-old female presented to our hospital with persistent dryness, foreign body sensation, and blurred vision in her left eye. Diagnosis of graft-versus-host disease with corneal descemetocele in the left eye was made after detailed history review and thorough examination. Multi-layer amniotic membrane transplantation was performed in the affected eye, resulting in amelioration of the patient's symptoms. This amelioration of symptoms provided the patient with a level of comfort that permitted additional time while awaiting corneal transplantation. Conclusions: We report a successful case of multi-layer amniotic membrane transplantation for the management of corneal descemetocele following allo-HSCT.


Assuntos
Oftalmopatias , Doença Enxerto-Hospedeiro , Transplante de Células-Tronco Hematopoéticas , Humanos , Feminino , Pessoa de Meia-Idade , Âmnio/transplante , Doença Enxerto-Hospedeiro/etiologia , Córnea
2.
Int J Cardiol ; 377: 33-41, 2023 04 15.
Artigo em Inglês | MEDLINE | ID: mdl-36513283

RESUMO

BACKGROUND: There are many risk factors related to early death after surgery among patients with acute Stanford type A aortic dissection (ATAAD) that have been analyzed in previous studies, but no evidence-based study has been conducted to confirm these risk factors. AIMS: The aims of this study were to investigate risk factors for early death after surgery in patients with ATAAD via systematic review and meta-analysis and assess evidence-based strategies for preventing adverse events. METHODS: The protocol for this study was prospectively registered with PROSPERO (CRD 42022332772). The authors systematically searched PubMed, Ovid, Scopus, Web of Science and Cochrane Library following the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines from database construction to May 2021. Studies that met the selection criteria were determined by two independent researchers, and the odds ratios (ORs) and 95% confidence intervals (95% CIs) were reported for the risk factors and were pooled using Stata 15.0. RESULTS: A total of 23 studies including 5510 patients met the inclusion criteria, and 10 risk factors were analyzed in this meta-analysis. The preoperative risk factors for early death after surgery in patients with ATAAD were age [(OR: 1.03, 95% CI (1.01, 1.06)], male sex [(OR: 1.43, 95% CI (1.06, 1.92)], shock [(OR: 1.91, 95% CI (1.06, 3.45)], malperfusion [(OR: 3.45, 95% CI (2.24, 5.31)] and cardiac tamponade [(OR: 3.89, 95% CI (1.17, 12.98)]. CONCLUSION: Patients with ATAAD who have an older age, male sex, shock, malperfusion and cardiac tamponade have a higher risk for early death after surgery. However, more highly homogenous studies are needed to demonstrate these results. Clinical staff should pay more attention to these factors and take individual actions to reduce mortality after surgery in patients with ATAAD.


Assuntos
Dissecção Aórtica , Tamponamento Cardíaco , Humanos , Masculino , Estudos Retrospectivos , Dissecção Aórtica/cirurgia , Fatores de Risco
3.
Int J Mol Sci ; 23(19)2022 Oct 03.
Artigo em Inglês | MEDLINE | ID: mdl-36233018

RESUMO

Inflammation is the main cause of corneal and retinal damage in an ocular alkali burn (OAB). The aim of this study was to investigate the effect of tauroursodeoxycholic acid (TUDCA) on ocular inflammation in a mouse model of an OAB. An OAB was induced in C57BL/6j mouse corneas by using 1 M NaOH. TUDCA (400 mg/kg) or PBS was injected intraperitoneally (IP) once a day for 3 days prior to establishing the OAB model. A single injection of Infliximab (6.25 mg/kg) was administered IP immediately after the OAB. The TUDCA suppressed the infiltration of the CD45-positive cells and decreased the mRNA and protein levels of the upregulated TNF-α and IL-1ß in the cornea and retina of the OAB. Furthermore, the TUDCA treatment inhibited the retinal glial activation after an OAB. The TUDCA treatment not only ameliorated CNV and promoted corneal re-epithelization but also attenuated the RGC apoptosis and preserved the retinal structure after the OAB. Finally, the TUDCA reduced the expression of the endoplasmic reticulum (ER) stress molecules, IRE1, GRP78 and CHOP, in the retinal tissues of the OAB mice. The present study demonstrated that the TUDCA inhibits ocular inflammation and protects the cornea and retina from injury in an OAB mouse model. These results provide a potential therapeutic intervention for the treatment of an OAB.


Assuntos
Queimaduras Químicas , Animais , Apoptose , Queimaduras Químicas/tratamento farmacológico , Modelos Animais de Doenças , Estresse do Retículo Endoplasmático , Inflamação/tratamento farmacológico , Infliximab/uso terapêutico , Camundongos , Camundongos Endogâmicos C57BL , Proteínas Serina-Treonina Quinases , RNA Mensageiro , Hidróxido de Sódio/farmacologia , Ácido Tauroquenodesoxicólico/farmacologia , Ácido Tauroquenodesoxicólico/uso terapêutico , Fator de Necrose Tumoral alfa/metabolismo
4.
J Ophthalmol ; 2022: 1265556, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36157680

RESUMO

Purpose: The aim of this study is to report the clinical characteristics, visual outcomes, and antibiotic susceptibilities of patients with Pseudomonas aeruginosa endophthalmitis. Methods: The medical records of patients with culture-proven Pseudomonas aeruginosa endophthalmitis treated from June 2013 to December 2019 were reviewed. Results: This study included 36 eyes of 36 patients. The clinical settings included ocular trauma (15/36), corneal ulcer (9/36), postoperative endophthalmitis (5/36), endogenous (3/36), and unknown (4/36). Sixteen patients underwent evisceration, 13 patients underwent pars plana vitrectomy (PPV), 2 patients were treated with only intravitreal antibiotics, and 5 patients did not undergo surgery. Only one patient achieved a visual acuity of 20/400, and the others had all counting fingers or below. The cultured Pseudomonas aeruginosa was 100% sensitive to gentamicin, tobramycin, amikacin, ciprofloxacin, and levofloxacin and, approximately 95% sensitive to meropenem, imipenem, and aztreonam. Conclusion: The visual outcomes of Pseudomonas aeruginosa endophthalmitis were very poor, and the evisceration rate remained high. Pseudomonas aeruginosa has good susceptibility to gentamicin, tobramycin, amikacin, ciprofloxacin, and levofloxacin.

5.
BMC Pregnancy Childbirth ; 22(1): 390, 2022 May 05.
Artigo em Inglês | MEDLINE | ID: mdl-35513779

RESUMO

BACKGROUND: Progesterone is widely used to improve the adverse pregnancy outcomes related to vaginal bleeding during early pregnancy. However, the evidence of its effectiveness is equivocal. METHODS: Six thousand six hundred fifteen mother-infant pairs from Tongji Maternal and Child Health Cohort (TMCHC) were involved in the study. Information on vaginal bleeding, progesterone administration in early pregnancy were obtained at enrolment. Birth outcomes were obtained from the hospital notes. Body weight of the infants at 12 months of age was collected by telephone interview. Multivariable logistic regression was conducted to estimate the effect of vaginal bleeding and progesterone administration in early pregnancy on birth outcomes and weight status of infants at 12 months of age. RESULTS: 21.4% (1418/6615) participants experienced bleeding in early pregnancy, and 47.5% (674/1418) of them were treated with progesterone. There were no significant associations between progesterone supplementation in early pregnancy and offspring outcomes. Compared to women without bleeding or any therapy, women with bleeding and progesterone therapy experienced increased risk of preterm (OR 1.74, 95% CI 1.21-2.52), and delivering a small-for-gestational-age (SGA) (OR 1.46, 95% CI 1.07-1.98) or low birth weight (LBW) (OR 2.10, 95% CI 1.25-3.51) neonate, and offspring of them had an increased risk of weight for age z-score (WAZ) < -1 at 12 months of age (OR 1.79, 95%CI 1.01-3.19). CONCLUSIONS: Offspring of mothers with bleeding and progesterone therapy were more likely to be a premature, SGA or LBW neonate, and had lower weight at 12 months of age. Progesterone supplementation may have no beneficial effect on improving adverse offspring outcomes related to early vaginal bleeding. TRIAL REGISTRATION: TMCHC was registered at clinicaltrials.gov as NCT03099837 on 4 April 2017.


Assuntos
Nascimento Prematuro , Progesterona , Hemorragia Uterina , Suplementos Nutricionais , Feminino , Retardo do Crescimento Fetal , Humanos , Recém-Nascido , Recém-Nascido Pequeno para a Idade Gestacional , Gravidez , Nascimento Prematuro/epidemiologia , Progesterona/uso terapêutico , Estudos Prospectivos , Hemorragia Uterina/tratamento farmacológico , Hemorragia Uterina/epidemiologia
6.
Ophthalmol Ther ; 11(1): 421-434, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34940946

RESUMO

INTRODUCTION: To compare outcomes in eyes with ocular burns following Boston Type I keratoprosthesis (KPro) implantation with and without prophylactic pars plana tube surgery. METHODS: A retrospective review of patients with ocular burns who underwent KPro surgery at Zhongshan Ophthalmic Center was performed. Twenty-six eyes of 26 patients without a preoperative diagnosis of glaucoma before KPro surgery met the inclusion criteria. Preoperative glaucoma was defined as a history of a durable elevated intraocular pressure (IOP) ≥ 25 mmHg at different time points, which resulted in the introduction of anti-glaucoma medication or surgical intervention. Sixteen eyes underwent KPro alone (Group 1), and 10 eyes received KPro with prophylactic pars plana tube surgery (Group 2). RESULTS: Group 1 and Group 2 were similar in the proportions of the ocular burn type and preoperative clock hours of peripheral anterior synechiae by ultrasound biomicroscopy (1.88 ± 1.63 vs. 2.30 ± 1.83; P = 0.54). Before KPro surgery, 62.5% of eyes in Group 1 and 50.0% of eyes in Group 2 had intraocular surgeries (P = 0.53). The follow-up time was 18 months. At the final follow-up time, the two groups had similar visual acuity (1.34 ± 0.87 logMAR, 1.03 ± 0.71 logMAR; P = 0.35) and eyes with a C/D ratio ≥ 0.8 (7/16, 2/10; P = 0.21), but more eyes in Group 1 developed glaucoma de novo than eyes in Group 2 (62.5%, 20%; P = 0.04) and had undergone secondary glaucoma surgery after KPro implantation (7/16 vs. 0/10; P = 0.02). CONCLUSION: In eyes injured with ocular burns, KPro implantation with prophylactic pars plana tube surgery may be a feasible option to rehabilitate visual acuity and decrease the incidence of glaucoma de novo.

7.
Am J Clin Nutr ; 114(3): 1100-1106, 2021 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-34019623

RESUMO

BACKGROUND: The association between iron supplementation and gestational diabetes mellitus (GDM) is still inconclusive, and this association has not been extensively studied in relation to plasma ferritin in the early second trimester. OBJECTIVES: We aimed to prospectively examine the independent and combined associations of plasma ferritin concentrations and iron supplement use with GDM. METHODS: We studied 2117 women from the Tongji Maternal and Child Health Cohort in Wuhan, China. Plasma ferritin around 16 weeks' gestation was measured by ELISA kits and information on iron supplement use was collected by questionnaires. GDM was diagnosed by a 75-g oral-glucose-tolerance test (OGTT) at 24-28 weeks' gestation. A log-Poisson regression model was used to estimate the RR of GDM associated with plasma ferritin and iron supplementation. RESULTS: The median and IQR of plasma ferritin was 52.1 (29.6-89.9) ng/mL, and 863 (40.8%) participants reported use of iron supplements during the second trimester. A total of 219 (10.3%) participants developed GDM. Adjusted RRs (95% CIs) for GDM across increasing quartiles of plasma ferritin were 1.00 (reference), 2.14 (1.37, 3.34), 2.03 (1.30, 3.19), and 2.72 (1.76, 4.21), respectively. After adjustment, supplemental iron ≥60 mg/d during the second trimester was associated with an increased risk of GDM compared with nonusers (RR: 1.37; 95% CI: 1.02, 1.84). CONCLUSIONS: Both elevated plasma ferritin concentrations in the early second trimester and use of ≥60 mg/d of supplemental iron during pregnancy are independently associated with increased risk of GDM. Further clinical trials with precision nutrition approaches considering both baseline iron status and supplement use are needed to evaluate the benefits and risks of iron supplementation during pregnancy.


Assuntos
Diabetes Gestacional/prevenção & controle , Suplementos Nutricionais/efeitos adversos , Ferritinas/sangue , Ferro/administração & dosagem , Fenômenos Fisiológicos da Nutrição Pré-Natal , Adulto , Estudos de Coortes , Feminino , Humanos , Ferro/efeitos adversos , Gravidez , Estudos Prospectivos
8.
Bioorg Med Chem Lett ; 41: 127981, 2021 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-33766767

RESUMO

Increasing evidences demonstrated that PRL-3 was associated with metastatic potential in a variety of cancers including CRC, gastric cancer, ovarian cancer and so on. PRL-3 knock down inhibited the development of metastasis by reducing the size of primary tumors and inhibiting the invasion and growth of cancer cells. Therefore, PRL-3 is a promising diagnostic marker and therapeutic target in tumors. So far, only several PRL-3 inhibitors have been reported. In this study, six rhodanine derivatives were synthesized and characterized. The compounds were evaluated against tyrosine phosphatase PRL-3. Among these compounds, 5-(5-chloro-2-(trifluoromethyl)benzylidene)-2-thioxothiazolidin-4-one (4) could effectively inhibit PRL-3 with IC50 value of 15.22 µM. Fluorescent assays suggested compound 4 tightly bound to tyrosine phosphatase PRL-3 with the molar ratio of 1:1, and the binding constant of 1.74 × 106 M-1. Compound 4 entered into SW-480 cells, selectively inhibited the expression of PRL-3 and increased the phosphorylation of PRL-3 substrates, and decreased the survival rate of SW-480 cells with IC50 of 6.64 µM and induced apoptosis. The results revealed that compound 4 is a dual functional inhibitor against the activity and expression of PRL-3 and a promising anti-cancer candidate targeting PRL-3.


Assuntos
Antineoplásicos/farmacologia , Inibidores Enzimáticos/farmacologia , Proteínas de Neoplasias/antagonistas & inibidores , Proteínas Tirosina Fosfatases/antagonistas & inibidores , Rodanina/farmacologia , Antineoplásicos/síntese química , Antineoplásicos/química , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Relação Dose-Resposta a Droga , Ensaios de Seleção de Medicamentos Antitumorais , Inibidores Enzimáticos/síntese química , Inibidores Enzimáticos/química , Humanos , Estrutura Molecular , Proteínas de Neoplasias/metabolismo , Proteínas Tirosina Fosfatases/metabolismo , Rodanina/síntese química , Rodanina/química , Relação Estrutura-Atividade
9.
Indoor Air ; 31(3): 673-681, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33090568

RESUMO

We aimed to evaluate the association of the exposure to environmental tobacco smoke (ETS) during pregnancy and infancy with the risk of upper respiratory tract infections (URTI) in infants based on a Chinese birth cohort study. Among 4178 infants who constituted the final study population, 46.8% experienced URTI in their first year of life. The hazard ratios (HR) and 95% confidence intervals (CI) for the risk of URTI were assessed using Cox regression models. Compared with no ETS during pregnancy, continued ETS during pregnancy was independently associated with a higher risk of URTI (HR: 1.36, 95% CI: 1.13, 1.63) after adjustment for potential confounders and also associated with earlier occurrence of URTI (log-rank P = .002). The association remained consistent across the strata defined according to maternal age, number of siblings, sex, and breastfeeding. Exposure to ETS during infancy was associated with URTI only among infants who were breastfed for less than 12 months (P for interaction < 0.05).Furthermore, infants exposed to ETS during both pregnancy and infancy showed the highest HR of 1.46 (95% CI: 1.16, 1.85) for URTI. Efforts should be made to protect pregnant women and infants from the adverse effects of indoor and outdoor ETS.


Assuntos
Poluição do Ar em Ambientes Fechados/estatística & dados numéricos , Exposição Materna/estatística & dados numéricos , Infecções Respiratórias/epidemiologia , Poluição por Fumaça de Tabaco/estatística & dados numéricos , Adulto , Aleitamento Materno , China , Estudos de Coortes , Exposição Ambiental , Feminino , Humanos , Lactente , Recém-Nascido de Baixo Peso , Recém-Nascido , Modelos Logísticos , Masculino , Parto , Gravidez , Efeitos Tardios da Exposição Pré-Natal , Fatores de Risco
10.
Curr Eye Res ; 45(7): 797-804, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-31797695

RESUMO

BACKGROUND: To evaluate the risk factors associated with failure to correct hypotony using direct cyclopexy in patients with traumatic cyclodialysis cleft. METHODS: In a series of 116 patients with traumatic cyclodialysis who underwent direct cyclopexy at Zhongshan Ophthalmic Center from January 2008 to August 2018, the clinical correlation between the risk factors and failure of the operation were retrospectively studied, after adjusting for other potential confounders. RESULTS: The curative ratio after one procedure was 82.76%, whereas 20 (17.24%) eyes experienced treatment failure after the first surgery. The degree of anterior chamber angle closure was significantly wider in patients with a failed first surgery than in patients for whom one procedure was a success (p = .046). The risk of failure to achieve closure increased as the angle-closure exceeded 5 clock hour (odds ratio, 10.39; 95% confidence interval, 1.75-61.72; p = .010). An analysis of the recurrent position indicated that an angle closure exceeding 5 clock hour may impede accurate cleft location and is thus associated with an increased risk of failure to correct hypotony. CONCLUSION: Exceeding the threshold of 5 clock hour in anterior chamber angle closure may impede accurate cleft location and, thus, present a higher risk of failure to correct hypotony using direct cyclopexy. These patients may need injection of a viscoelastic agent into the anterior chamber by paracentesis to deepen the anterior chamber and to delineate the clefts using gonioscopy pre- or intraoperatively.


Assuntos
Fendas de Ciclodiálise/cirurgia , Procedimentos Cirúrgicos Oftalmológicos , Adulto , Estudos de Casos e Controles , Fendas de Ciclodiálise/diagnóstico por imagem , Fendas de Ciclodiálise/etiologia , Fendas de Ciclodiálise/fisiopatologia , Traumatismos Oculares/complicações , Feminino , Gonioscopia , Humanos , Pressão Intraocular/fisiologia , Masculino , Microscopia Acústica , Pessoa de Meia-Idade , Hipotensão Ocular/fisiopatologia , Estudos Retrospectivos , Fatores de Risco , Técnicas de Sutura , Falha de Tratamento , Acuidade Visual/fisiologia
11.
Dalton Trans ; 48(47): 17673-17682, 2019 Dec 03.
Artigo em Inglês | MEDLINE | ID: mdl-31763642

RESUMO

Four new Ce(iii) complexes 1-4 with tridentate NNO-donor Schiff base ligands have been designed and successfully synthesized. These complexes were characterized by elemental analysis, IR, and ESI-MS, with formulas of [Ce(HL1)2(NO3)3]·2CH3OH (1), [Ce(L2)2(NO3)]·3H2O (2), [Ce(HL3)(L3)(NO3)Br]·H2O (3) and [Ce(L4)2(NO3)]·3H2O (4), in which ligands HL1-HL4 are respectively N'-[(1E)-pyridin-2-ylmethylidene]pyrazine-2-carbohydrazide (HL1), 2-(1-(salicyloylhydrazono)ethyl)pyrazine (HL2), N'-[(1E)-pyridin-2-ylmethylidene]pyridine-2-carbohydrazide (HL3) and 2-(1-(salicyloylhydrazono)ethyl) pyridine (HL4). X-ray single crystal diffraction analysis indicates that complex 1 crystallizes in the monoclinic system with the space group C2/c and the structure of complex 1 consists of a monomeric Ce(iii) species with a Ce(iii) moiety bonded to two tridentate Schiff base ligands, three nitrates and solvents. These complexes effectively inhibit the enzyme activities of PTPs (SHP-1, SHP-2, TCPTP and PTP1B), among which complex 3 shows the most potent inhibition of SHP-2 with the lowest IC50 value of 0.61 µM and displays obvious selectivity towards SHP-2. Its inhibition potency against SHP-2 was approximately 17, 4, and 5 fold higher than that against SHP-1, TCPTP and PTP1B, respectively. Further study discloses that complex 3 inhibits SHP-2 in a competitive manner. Fluorescence measurements indicate that complex 3 tightly binds to SHP-2 with a molar ratio of 1 : 1 and a binding constant of 5.45 × 105 M-1. Western blot experiments show that complex 3 promotes the phosphorylation of the SHP-2 substrate by the combination of the inhibition of the activity and expression of SHP-2. Moreover, complex 3 decreases the survival rate of A549 cells to 35.12% at 100 µM and induces apoptosis with an apoptosis rate of 12.06% at 50 µM. All these results suggest that complex 3 is a potential bi-functional inhibitor of the activity and expression of tyrosine phosphatase SHP-2.


Assuntos
Antineoplásicos/farmacologia , Cério/farmacologia , Complexos de Coordenação/farmacologia , Inibidores Enzimáticos/farmacologia , Proteína Tirosina Fosfatase não Receptora Tipo 11/antagonistas & inibidores , Células A549 , Antineoplásicos/síntese química , Antineoplásicos/química , Apoptose/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Cério/química , Complexos de Coordenação/síntese química , Complexos de Coordenação/química , Cristalografia por Raios X , Relação Dose-Resposta a Droga , Ensaios de Seleção de Medicamentos Antitumorais , Inibidores Enzimáticos/síntese química , Inibidores Enzimáticos/química , Humanos , Ligantes , Modelos Moleculares , Estrutura Molecular , Proteína Tirosina Fosfatase não Receptora Tipo 11/metabolismo , Bases de Schiff/síntese química , Bases de Schiff/química , Bases de Schiff/farmacologia , Relação Estrutura-Atividade
12.
Spectrochim Acta A Mol Biomol Spectrosc ; 202: 314-318, 2018 Sep 05.
Artigo em Inglês | MEDLINE | ID: mdl-29800895

RESUMO

In this work, we designed an anthraquinone derivative: 1,4-diacrylateanthracene-9,10-dione (DAAD) with antioxidant activity for preventing Alzheimer's disease (AD) through preventing the neurotoxicity of Homocysteine (Hcy). This compound has very low cytotoxicity and protects the cells against Hcy-induced cytotoxicity and oxidative stress. Thus, maybe DAAD can be used as a potential reagent to preventing AD. In addition, we investigated the UV-Vis and fluorescence spectra of DAAD in PBS (pH 7.29)/DMSO (v/v, 1:1) solution for detecting Hcy, and the detection limit of DAAD for Hcy was found to be 0.121 µM. Thus, DAAD also can be used to monitor the Hcy level in plasma and cells.


Assuntos
Antraquinonas/farmacologia , Homocisteína/toxicidade , Estresse Oxidativo/efeitos dos fármacos , Substâncias Protetoras/farmacologia , Animais , Antraquinonas/síntese química , Antraquinonas/química , Morte Celular/efeitos dos fármacos , Sobrevivência Celular , Imageamento Tridimensional , Cinética , Limite de Detecção , Malondialdeído/metabolismo , Células PC12 , Ratos , Espectrometria de Fluorescência , Espectrofotometria Ultravioleta
13.
Gigascience ; 6(5): 1-14, 2017 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-28368449

RESUMO

Longan (Dimocarpus longan Lour.), an important subtropical fruit in the family Sapindaceae, is grown in more than 10 countries. Longan is an edible drupe fruit and a source of traditional medicine with polyphenol-rich traits. Tree size, alternate bearing, and witches' broom disease still pose serious problems. To gain insights into the genomic basis of longan traits, a draft genome sequence was assembled. The draft genome (about 471.88 Mb) of a Chinese longan cultivar, "Honghezi," was estimated to contain 31 007 genes and 261.88 Mb of repetitive sequences. No recent whole-genome-wide duplication event was detected in the genome. Whole-genome resequencing and analysis of 13 cultivated D. longan accessions revealed the extent of genetic diversity. Comparative transcriptome studies combined with genome-wide analysis revealed polyphenol-rich and pathogen resistance characteristics. Genes involved in secondary metabolism, especially those from significantly expanded (DHS, SDH, F3΄H, ANR, and UFGT) and contracted (PAL, CHS, and F3΄5΄H) gene families with tissue-specific expression, may be important contributors to the high accumulation levels of polyphenolic compounds observed in longan fruit. The high number of genes encoding nucleotide-binding site leucine-rich repeat (NBS-LRR) and leucine-rich repeat receptor-like kinase proteins, as well as the recent expansion and contraction of the NBS-LRR family, suggested a genomic basis for resistance to insects, fungus, and bacteria in this fruit tree. These data provide insights into the evolution and diversity of the longan genome. The comparative genomic and transcriptome analyses provided information about longan-specific traits, particularly genes involved in its polyphenol-rich and pathogen resistance characteristics.


Assuntos
Frutas/genética , Genoma de Planta , Sapindaceae/genética , Processamento Alternativo , Evolução Molecular , Regulação da Expressão Gênica de Plantas , Filogenia , Polimorfismo de Nucleotídeo Único , Polifenóis/biossíntese , Análise de Sequência de RNA
14.
Medicine (Baltimore) ; 94(50): e2258, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26683946

RESUMO

A low urine flow rate is a marker of acute kidney injury. However, it is unclear whether a high urine flow rate is associated with a reduced risk of contrast-induced nephropathy (CIN) in high-risk patients. We conducted this study to evaluate the predictive value of the urine flow rate for the risk of CIN following emergent percutaneous coronary intervention (PCI). We prospectively examined 308 patients undergoing emergent PCI who provided consent. The predictive value of the 24-hour postprocedural urine flow rate, adjusted by weight (UR/W, mL/kg/h) and divided into quartiles, for the risk of CIN was assessed using multivariate logistic regression analysis. The cumulative incidence of CIN was 24.4%. In particular, CIN was observed in 29.5%, 19.5%, 16.7%, and 32.0% of cases in the UR/W quartile (Q)-1 (≤0.94  mL/kg/h), Q2 (0.94-1.30  mL/kg/h), Q3 (1.30-1.71  mL/kg/h), and Q4 (≥1.71  mL/kg/h), respectively. Moreover, in-hospital death was noted in 7.7%, 3.9%, 5.1%, and 5.3% of patients in Q1, Q2, Q3, and Q4, respectively. After adjusting for potential confounding predictors, multivariate analysis indicated that compared with the moderate urine flow rate quartiles (Q2 + Q3), a high urine flow rate (Q4) (odds ratio [OR], 2.69; 95% confidence interval [CI], 1.27-5.68; P = 0.010) and low urine flow rate (Q1) (OR, 2.23; 95% CI, 1.03-4.82; P = 0.041) were significantly associated with an increased risk of CIN. Moreover, a moderate urine flow rate (0.94-1.71  mL/kg/h) was significantly associated with a decreased risk of mortality. Our data suggest that higher and lower urine flow rates were significantly associated with an increased risk of CIN after emergent PCI, and a moderate urine flow rate (0.94-1.71  mL/kg/h) may be associated with a decreased risk of CIN with a good long-term prognosis after emergent PCI.


Assuntos
Injúria Renal Aguda/induzido quimicamente , Injúria Renal Aguda/epidemiologia , Meios de Contraste/efeitos adversos , Isquemia Miocárdica/terapia , Intervenção Coronária Percutânea , Micção/fisiologia , Injúria Renal Aguda/diagnóstico , Idoso , Estudos de Coortes , Feminino , Humanos , Incidência , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Isquemia Miocárdica/complicações , Isquemia Miocárdica/fisiopatologia , Valor Preditivo dos Testes , Medição de Risco , Urodinâmica
15.
Biomed Res Int ; 2015: 713828, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26557694

RESUMO

PURPOSE: To evaluate the effects of long-term tamponade with silicone oil on retinal saturation. METHODS: A total of 49 eyes that received tamponade with silicone oil were included. The patients were divided into 3 groups (3-6 months, 6-9 months, and >9 months) according to the duration of silicone oil tamponade. Retinal oximetry was performed using the Oxymap system before and 2 months after silicone oil removal. RESULTS: The mean retinal oxygen saturation before silicone oil removal was 107% ± 12% in the arterioles and 60% ± 10% in the venules, with an overall arteriovenous difference (AVD) of 47% ± 14%. The AVD in the >9-month group was significantly higher than that in the 3-6-month group (54% ± 16% versus 44% ± 11%, P = 0.042). After silicone oil removal, the AVD in the >9-month group was significantly decreased (45% ± 9% versus 54% ± 16%, P = 0.009); additionally, the arterioles were significantly wider than before surgery (10.8 ± 0.7 pixels versus 10.4 ± 0.9 pixels, P = 0.015). CONCLUSIONS: The tamponade with silicone oil for more than 9 months will cause the alterations of retinal saturation and the narrowing of retinal arterioles, which may further interfere with the oxygen metabolism in the retina.


Assuntos
Oxigênio/análise , Retina/efeitos dos fármacos , Vasos Retinianos/efeitos dos fármacos , Óleos de Silicone/efeitos adversos , Óleos de Silicone/uso terapêutico , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Oximetria , Estudos Prospectivos , Retina/cirurgia , Descolamento Retiniano/cirurgia , Vasos Retinianos/patologia , Vasos Retinianos/fisiologia , Oclusão Terapêutica/efeitos adversos , Oclusão Terapêutica/métodos , Vitrectomia
16.
Front Plant Sci ; 6: 956, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26594219

RESUMO

MicroRNA160 plays a critical role in plant development by negatively regulating the auxin response factors ARF10, -16, and -17. However, the ways in which miR160 expression is regulated at the transcriptional level, and how miR160 interacts with its targets during plant embryo development, remain unknown. Here, we studied the regulatory relationships among endogenous target mimics (eTMs), and miR160 and its targets, and their involvement in hormone signaling and somatic embryogenesis (SE) in Dimocarpus longan. We identified miR160 family members and isolated the miR160 precursor, primary transcript, and promoter. The promoter contained cis-acting elements responsive to stimuli such as light, abscisic acid, salicylic acid (SA) and heat stress. The pri-miR160 was down-regulated in response to SA but up-regulated by gibberellic acid, ethylene, and methyl jasmonate treatment, suggesting that pri-miR160 was associated with hormone transduction. Dlo-miR160a, -a(∗) and -d(∗) reached expression peaks in torpedo-shaped embryos, globular embryos and cotyledonary embryos, respectively, but were barely detectable in friable-embryogenic callus. This suggests that they have expression-related and functional diversity, especially during the middle and later developmental stages of SE. Four potential eTMs for miR160 were identified. Two of them, glucan endo-1,3-beta- glucosidase-like protein 2-like and calpain-type cysteine protease DEK1, were confirmed to control the corresponding dlo-miR160a(∗) expression level. This suggests that they may function to abolish the binding between dlo-miR160a(∗) and its targets. These two eTMs also participated in 2,4-D and ABA signal transduction. DlARF10, -16, and -17 targeting by dlo-miR160a was confirmed; their expression levels were higher in friable-embryogenic callus and incomplete compact pro-embryogenic cultures and responded to 2,4-D, suggesting they may play a major role in the early stages of longan SE dependent on 2,4-D. The eTMs, miR160, and ARF10, -16, and -17 exhibited tissue specificity in 'Sijimi' longan vegetative and reproductive organs, but were not significant negatively correlated. These results provide insights into the possible role of the eTM-miR160-ARF10-16-17 pathway in longan somatic embryo development.

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