Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 19 de 19
Filtrar
Mais filtros

Base de dados
País/Região como assunto
Tipo de documento
País de afiliação
Intervalo de ano de publicação
1.
Eur J Nutr ; 62(2): 771-782, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36261730

RESUMO

PURPOSE: Fruit intake is beneficial to several chronic diseases, but controversial in diabetes. We aimed to investigate prospectively the associations of whole fresh fruit intake with risk of incident type 2 diabetes (T2D) in subjects with different glucose regulation capacities. METHODS: The present study included 79,922 non-diabetic participants aged ≥ 40 years from an ongoing nationwide prospective cohort in China. Baseline fruit intake information was collected by a validated food frequency questionnaire. Plasma HbA1c, fasting and 2 h post-loading glucose levels were measured at both baseline and follow-up examinations. Cox proportional hazards models were used to calculate hazard ratio (HR) and 95% confidence intervals (CI) for incident diabetes among participants with normal glucose tolerance (NGT) and prediabetes, after adjusted for multiple confounders. Restricted cubic spline analysis was applied for dose-response relation. RESULTS: During a median 3.8-year follow-up, 5886 (7.36%) participants developed diabetes. Overall, we identified a linear and dose-dependent inverse association between dietary whole fresh fruit intake and risk of incident T2D. Each 100 g/d higher fruit intake was associated with 2.8% lower risk of diabetes (HR 0.972, 95%CI [0.949-0.996], P = 0.0217), majorly benefiting NGT subjects with 15.2% lower risk (HR 0.848, 95%CI [0.766-0.940], P = 0.0017), while not significant in prediabetes (HR 0.981, 95%CI 0.957-4.005, P = 0.1268). Similarly, the inverse association was present in normoglycemia individuals with a 48.6% lower risk of diabetes when consuming fruits > 7 times/week comparing to those < 1 time/week (HR 0.514, 95% CI [0.368-0.948]), but not in prediabetes (HR 0.883, 95% CI [0.762-1.023]). CONCLUSION: These findings suggest that higher frequency and amount of fresh fruit intake may protect against incident T2D, especially in NGT, but not in prediabetes, highlighting the dietary recommendation of higher fresh fruit consumption to prevent T2D in normoglycemia population.


Assuntos
Diabetes Mellitus Tipo 2 , Estado Pré-Diabético , Humanos , Diabetes Mellitus Tipo 2/epidemiologia , Frutas , Estudos Prospectivos , Incidência , Glucose , Fatores de Risco
2.
J Lumin ; 2322021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-34565833

RESUMO

Six dinuclear lanthanide(III) nitrato complexes [Ln(NO3)3(H2O)]2(µ-tppz) (where tppz = 2,3,5,6-tetra(2-pyridyl) pyrazine and Ln(III) = Nd (1), Sm (2), Eu (3), Gd (4), Tb (5), and Dy (6)) with bis-tridentate N-heterocyclic 2,3,5,6-tetra(2-pyridyl)pyrazine as bridging ligand have been solvothermally synthesized and characterized via elemental analysis, infrared spectroscopy, thermogravimetric analysis, single-crystal X-ray diffraction, and powder X-ray diffraction. The 3-D Hirshfeld surface and 2-D fingerprint plots show that the main interactions in 1-6 are the O⋯H/H⋯O intermolecular interactions with relative contributions of about 62%. Although the poor lanthanide(III)-centered luminescence properties clearly point to the efficiency of nonradiative quenching processes (presence of water molecules in the coordination sphere of the lanthanide(III) ions), the ligand tppz is better suited to sensitize the lanthanide(III)'s emissions of EuIII and NdIII than SmIII, TbIII, and DyIII. Finally, the magnetic data of DyIII comple×6 reveals antiferromagnetic coupling between DyIII ions.

3.
Inorganica Chim Acta ; 489: 85-92, 2019 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-34079145

RESUMO

Four mononuclear lanthanide complexes containing 4'-phenyl-2,2':6',2″-terpyridine (ptpy), [Ln(NO3)3(ptpy) (H2O)] (Ln = Eu (1), Gd (2), Tb (3), Dy (4)), were solvothermally synthesized and characterized via elemental analysis, infrared spectroscopy, thermogravimetric analysis, single-crystal X-ray diffraction, and powder X-ray diffraction. Hirshfeld surfaces and the solid-state luminescence properties of the complexes were investigated. The 3-D Hirshfeld surface and 2-D fingerprint plots show that the main interactions are the O H/H O intermolecular interactions in 1-4. Solid-state luminescence investigation reveals that GdIII complex 2 displays a ligand-centered emission and the EuIII, TbIII and DyIII complexes 1, 3 and 4 show the characteristic lanthanide-centered luminescence upon UV excitations. The EuIII and TbIII complexes exhibit red (CIE: 0.6549, 0.3447) and green (CIE: 0.3760, 0.5412) luminescence in the solid state with quantum yields of 16.8% and 0.8% and lifetimes of 0.545 and 0.043 ms, respectively. Density functional theory (DFT) calculations were conducted to unravel the HOMO-LUMO energy gaps of the structures of ptpy and complexes 1 and 3.

4.
World J Psychiatry ; 14(4): 513-522, 2024 Apr 19.
Artigo em Inglês | MEDLINE | ID: mdl-38659605

RESUMO

BACKGROUND: Bronchial asthma is closely related to the occurrence of attention-deficit hyperactivity disorder (ADHD) in children, which can easily have adverse effects on children's learning and social interactions. Studies have shown that childhood asthma can increase the risk of ADHD and the core symptoms of ADHD. Compared with children with ADHD alone, children with asthma and ADHD are more likely to show high levels of hyperactivity, hyperactive-impulsive and other externalizing behaviors and anxiety in clinical practice and have more symptoms of somatization and emotional internalization. AIM: To explore the relationship between ADHD in children and bronchial asthma and to analyze its influencing factors. METHODS: This retrospective cohort study was conducted at Dongying People's Hospital from September 2018 to August 2023. Children diagnosed with ADHD at this hospital were selected as the ADHD group, while healthy children without ADHD who underwent physical examinations during the same period served as the control group. Clinical and parental data were collected for all participating children, and multivariate logistic regression analysis was employed to identify risk factors for comorbid asthma in children with ADHD. RESULTS: Significant differences were detected between the ADHD group and the control group in terms of family history of asthma and allergic diseases, maternal complications during pregnancy, maternal use of asthma and allergy medications during pregnancy, maternal anxiety and depression during pregnancy, and parental relationship status (P < 0.05). Out of the 183 children in the ADHD group, 25 had comorbid asthma, resulting in a comorbidity rate of 13.66% (25/183), compared to the comorbidity rate of 2.91% (16/549) among the 549 children in the control group. The difference in the asthma comorbidity rate between the two groups was statistically significant (P < 0.05). The results of the multivariate logistic regression analysis indicated that family history of asthma and allergic diseases, maternal complications during pregnancy, maternal use of asthma and allergy medications during pregnancy, maternal anxiety and depression during pregnancy, and parental relationship status are independent risk factors increasing the risk of comorbid asthma in children with ADHD (P < 0.05). CONCLUSION: Children with ADHD were more likely to have comorbid asthma than healthy control children were. A family history of asthma, adverse maternal factors during pregnancy, and parental relationship status were identified as risk factors influencing the comorbidity of asthma in children with ADHD. Clinically, targeted interventions based on these factors can be implemented to reduce the risk of comorbid asthma. This information is relevant for results sections of abstracts in scientific articles.

5.
Analyst ; 138(19): 5777-82, 2013 Oct 07.
Artigo em Inglês | MEDLINE | ID: mdl-23912152

RESUMO

With the advantages of in situ analysis and high surface sensitivity, surface-enhanced infrared absorption spectroscopy in attenuated total reflection mode (ATR-SEIRAS) combined with electrochemical methods has been employed to examine the interfacial direct electron transfer activity and adsorption kinetics of cytochrome c (cyt c). This work presents data on cyt c adsorption onto negatively charged mercaptohexanoic acid (MHA) and positively charged 6-amino-1-hexanethiol (MHN) self-assembled monolayers (SAMs) on gold nanofilm surfaces. The adsorbed cyt c displays a higher apparent electron transfer rate constant (33.5 ± 2.4 s(-1)) and apparent binding rate constant (73.1 ± 5.2 M(-1) s(-1)) at the MHA SAMs surface than those on the MHN SAMs surface. The results demonstrate that the surface charge density determines the protein adsorption kinetics, while the surface charge character determines the conformation and orientation of proteins assembled which in turn affects the direct electron transfer activity.


Assuntos
Adsorção/fisiologia , Citocromos c/química , Citocromos c/metabolismo , Transporte de Elétrons/fisiologia , Animais , Cavalos , Conformação Proteica , Estrutura Secundária de Proteína , Propriedades de Superfície
6.
World J Diabetes ; 14(2): 120-129, 2023 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-36926660

RESUMO

BACKGROUND: Exposure to proton pump inhibitors (PPIs) has been reported to have a potential role in the development of diabetes. AIM: To determine the association between PPIs and diabetes. METHODS: This meta-analysis is registered on PROSPERO (CRD42022352704). In August 2022, eligible studies were identified through a comprehensive literature search. In this study, odds ratios were combined with 95% confidence intervals using a random-effects model. The source of heterogeneity was assessed using sensitivity analysis and subgroup analysis. The publication bias was evaluated using Egger's test and Begg's test. RESULTS: The meta-analysis included 9 studies with a total of 867185 participants. Results showed that the use of PPIs increased the risk of diabetes (odds ratio = 1.23, 95% confidence interval: 1.05-1.43, n = 9, I2 = 96.3%). Subgroup analysis showed that geographic location and study type had significant effects on the overall results. Both Egger's and Begg's tests showed no publication bias (P > 0.05). Sensitivity analysis also confirmed the stability of the results. CONCLUSION: The results of this study indicated that the use of PPIs was related to an increased risk of diabetes. However, more well-designed studies are needed to verify these results in the future.

7.
Mitochondrial DNA B Resour ; 6(7): 1951-1952, 2021 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-34179477

RESUMO

Fragaria orientalis Lozinsk. is valuable germplasm material for cross breeding in Fragaria. In this study, we assembled the complete mitochondrial genome of F. orientalis using a combination of Illumina data and Nanopore data. The mitochondrial genome was 275,143 bp in length, including 29 protein-coding genes, 20 tRNA genes, and three rRNA genes, with a total GC content 45.23%. Seven protein-coding genes contained introns, and three were trans-spliced. Phylogenetic analysis indicated that F. orientalis is making a sister clade to the Amygdaloideae species. The complete mitochondrial genome of F. orientalis reported in this study will improve our understanding of Fragaria evolution.

8.
Biomed Environ Sci ; 34(1): 9-18, 2021 Jan 20.
Artigo em Inglês | MEDLINE | ID: mdl-33531103

RESUMO

OBJECTIVE: The relationship between serum uric acid (SUA) levels and glycemic indices, including plasma glucose (FPG), 2-hour postload glucose (2h-PG), and glycated hemoglobin (HbA1c), remains inconclusive. We aimed to explore the associations between glycemic indices and SUA levels in the general Chinese population. METHODS: The current study was a cross-sectional analysis using the first follow-up survey data from The China Cardiometabolic Disease and Cancer Cohort Study. A total of 105,922 community-dwelling adults aged ≥ 40 years underwent the oral glucose tolerance test and uric acid assessment. The nonlinear relationships between glycemic indices and SUA levels were explored using generalized additive models. RESULTS: A total of 30,941 men and 62,361 women were eligible for the current analysis. Generalized additive models verified the inverted U-shaped association between glycemic indices and SUA levels, but with different inflection points in men and women. The thresholds for FPG, 2h-PG, and HbA1c for men and women were 6.5/8.0 mmol/L, 11.0/14.0 mmol/L, and 6.1/6.5, respectively (SUA levels increased with increasing glycemic indices before the inflection points and then eventually decreased with further increases in the glycemic indices). CONCLUSION: An inverted U-shaped association was observed between major glycemic indices and uric acid levels in both sexes, while the inflection points were reached earlier in men than in women.


Assuntos
Índice Glicêmico , Ácido Úrico/sangue , Idoso , Povo Asiático , Glicemia/análise , China/epidemiologia , Estudos de Coortes , Diabetes Mellitus/sangue , Feminino , Teste de Tolerância a Glucose , Hemoglobinas Glicadas/análise , Humanos , Masculino , Pessoa de Meia-Idade
9.
Guang Pu Xue Yu Guang Pu Fen Xi ; 30(11): 2911-3, 2010 Nov.
Artigo em Zh | MEDLINE | ID: mdl-21284151

RESUMO

By adding the thulium oxide nanoparticles (NP) of Gd2 O3 and Eu2O3 and Nd2O3 to polymer dispersed liquid crystals (PDLC), and the transmittances of PDLC and NP-PDLC changing with voltage in visible light was tested, and the thulium oxide modulation for PDLC was studied. The results show that transmittance of Gd2O3-NP-PDLC decreases with increasing voltage when the voltage is less than 10 V. The relaxation phenomenon of the sample appears at 15 V, and its transmittance curve fluctuates slightly around that at 10 V. The transmittance of Gd2O3-NP-PDLC increases rapidly at 20 V, and its filter phenomenon emerges. And the transmittance of Eu2O3-NP-PDLC decreases with increasing voltage, but the decrease is only slight. And the transmittance of Nd2O3-NP-PDLC changes with voltage insignificantly.

10.
World J Clin Cases ; 7(10): 1213-1220, 2019 May 26.
Artigo em Inglês | MEDLINE | ID: mdl-31183355

RESUMO

BACKGROUND: Small-cell lung cancer (SCLC) is a type of fatal tumor that is increasing in prevalence. While these are unpleasant facts to consider, it is vitally important to be informed, and it is important to catch the disease early. Typically, lung cancer does not show severe clinical symptoms in the early stage. Once lung cancer has progressed, patients might present with classical symptoms of respiratory system dysfunction. Thus, the prognosis of SCLC is closely related to the early diagnosis of the disease. Ectopic adrenocorticotropic hormone (ACTH) syndrome (EAS) is related to cancer occurrence, especially for SCLC with the presence of Cushing's syndrome, which is dependent on markedly elevated ACTH and cortisol levels. CASE SUMMARY: In the current report, we describe two middle-age patients who were originally diagnosed with diabetes mellitus with no classical symptoms of lung cancer. The patients were eventually diagnosed with SCLC, which was confirmed by bronchoscopic biopsy and histopathology. SCLC-associated diabetes was related to EAS, which was an endogenous ACTH-dependent form of Cushing's syndrome with elevated ACTH and cortisol levels. Multiple organ metastases were found in Patient 1, while Patient 2 retained good health at 2 years follow-up. EAS symptoms including thyroid dysfunction, hypercortisolism and glucose intolerance were all resolved after anticancer treatment. CONCLUSION: In conclusion, SCLC might start with diabetes mellitus and increased cortisol and hypokalemia or other EAS symptoms. These complex clinical features were the most significant factors to deteriorate a patient's condition. Early diagnosis and treatment from clinicians were essential for the anti-cancer treatment for patients with SCLC.

11.
Molecules ; 12(5): 979-87, 2007 May 11.
Artigo em Inglês | MEDLINE | ID: mdl-17873833

RESUMO

A new type of NADH model compound with good reactivity and enantioselectivity has been synthesized in good yields by an efficient and convenient synthetic method. The structures of these model compounds were confirmed by 1H and 13C-NMR and MS.


Assuntos
Formiatos/síntese química , Ácidos Mandélicos/química , NAD/química , Formiatos/química , Espectroscopia de Ressonância Magnética , Espectrometria de Massas , Estereoisomerismo
12.
Chem Commun (Camb) ; 51(4): 689-92, 2015 Jan 14.
Artigo em Inglês | MEDLINE | ID: mdl-25418674

RESUMO

We propose a strategy to control directly the orientation of hemin plane via experimental models, Hemin-His model and Hemin-MHN model with ODT. Electrochemical results show that electron communication is largely enhanced when the hemin plane is near to parallel to the electrode surface by histidine ligation in Hemin-His model, while the electron transport of hemin in Hemin-MHN model with ODT becomes relatively difficult.


Assuntos
Hemina/química , Técnicas Eletroquímicas , Eletrodos , Transporte de Elétrons , Elétrons , Histidina/química , Modelos Moleculares
13.
PLoS One ; 10(3): e0120586, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25793984

RESUMO

Low shear stress (LSS) plays a critical role in the site predilection of atherosclerosis through activation of cellular mechanosensors, such as platelet endothelial cell adhesion molecule 1 (PECAM-1). Poly(ADP-ribose) polymerase 1 (PARP-1) is a nuclear enzyme that regulates the expression of various inflammatory cytokines. The nuclear enzyme high mobility group box 1 (HMGB1) can induce inflammation response by binding to toll-like receptor 4 (TLR4). In the present study, we aimed to investigate the role and mechanism of HMGB1 in LSS induced inflammation in human umbilical vein endothelial cells (HUVECs). HUVECs were stimulated by undisturbed shear stress (USS, 1 Pa) and LSS (0.4 Pa) in our experiments. Gene expression was inhibited by small interfering RNA (siRNA). ICAM-1 expression was regulated by LSS in a time dependent manner. LSS can induce HMGB1 translocation from nucleus to cytoplasm and release. Compared with the USS, LSS could increase the protein expression of PECAM-1 and PARP-1 as well as the secretion of TNF-α and IL-1ß. LSS induced the translocation of HMGB1 from nucleus to cytoplasm. Inhibition of HGMB1 reduced LSS-induced inflammatory response. Inhibition of PARP-1 suppressed inflammatory response through inhibiting TLR4 expression and HMGB1 translocation. PECAM-1 inhibition reduced LSS-induced ICAM-1 expression, TNF-α and IL-1ß secretion, and monocytes adhesion. LSS can induce inflammatory response via PECAM-1/PARP-1/HMGB1 pathway. PARP-1 plays a fundamental role in HMGB1 translocation and TLR4 expression. Inhibition of PARP-1 may shed light on the treatment of HMGB1 involved inflammation during atherosclerosis.


Assuntos
Proteína HMGB1/metabolismo , Inflamação/metabolismo , Molécula-1 de Adesão Celular Endotelial a Plaquetas/metabolismo , Poli(ADP-Ribose) Polimerases/metabolismo , Resistência ao Cisalhamento , Transdução de Sinais , Estresse Mecânico , Proteína HMGB1/antagonistas & inibidores , Células Endoteliais da Veia Umbilical Humana/metabolismo , Humanos , Inflamação/patologia , Molécula 1 de Adesão Intercelular/metabolismo , Interleucina-1beta/metabolismo , Transporte Proteico , Fatores de Tempo , Receptor 4 Toll-Like/metabolismo , Fator de Necrose Tumoral alfa/metabolismo , Regulação para Cima
14.
Acta Crystallogr C Struct Chem ; 70(Pt 7): 715-7, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24992118

RESUMO

A novel manganese coordination polymer, poly[(µ5-thiophene-3,4-dicarboxylato)manganese(II)], [Mn(C6H2O4S)]n, was synthesized hydrothermally using 3,4-thiophenedicarboxylate (3,4-tdc(2-)) as the organic linker. The asymmetric unit of the complex contains an Mn(2+) cation and one half of a deprotonated 3,4-tdc(2-) anion, both residing on a twofold axis. Each Mn(2+) centre is six-coordinated by O atoms of bridging/chelating carboxylate groups from five 3,4-tdc(2-) anions, forming a slightly distorted octahedron. The Mn(2+) centres are bridged by 3,4-tdc(2-) anions to give an infinite two-dimensional layer which incorporates one-dimensional Mn-O gridlike chains, and in which the 3,4-tdc(2-) anion adopts a novel hexadentate chelating and µ5-bridging coordination mode. The fully deprotonated 3,4-tdc(2-) anion exhibits unexpected efficiency as a ligand towards the Mn(2+) centres, which it coordinates through all of its carboxylate O atoms to provide the novel coordination mode. The IR spectrum of the complex is also reported.

15.
J Chromatogr A ; 1342: 86-91, 2014 May 16.
Artigo em Inglês | MEDLINE | ID: mdl-24709591

RESUMO

The effect of low concentrations of sodium dodecyl sulfate (SDS) on the separation of palonosetron hydrochloride (PALO) stereoisomers by micellar electrokinetic chromatography (MEKC) has been investigated. It was found that the addition of SDS prolongs the migration time and the migration order of four stereoisomers changes regularly with the SDS concentration. Good separations for all the four stereoisomers were achieved at appropriate SDS concentration. The effect of SDS on the electromigration (mobilities) of PALO stereoisomers has been studied, in order to explain its effect on the separation by MEKC. It was found that low concentrations of SDS added into the separation media forms negatively charged complexes with PALO stereoisomers and hence reverses their electromigration direction. Furthermore, the migration order between two enantiomeric pairs is also reversed because the enantiomeric pair with a bigger positive mobility than that of another pair turns to have a bigger negative mobility when bound with SDS. Based on these results, the effect of SDS on the MEKC separation of PALO stereoisomers was elucidated reasonably. The performance of the developed chiral MEKC method was validated by the analysis of a real sample.


Assuntos
Isoquinolinas/química , Quinuclidinas/química , Dodecilsulfato de Sódio/química , Cromatografia Capilar Eletrocinética Micelar/métodos , Micelas , Palonossetrom , Estereoisomerismo
16.
Chem Commun (Camb) ; 49(78): 8788-90, 2013 Oct 09.
Artigo em Inglês | MEDLINE | ID: mdl-23958636

RESUMO

Ferric ions show high affinity to the kinase-generated phosphorylated sites of peptides. Thus, the high electrocatalytic activity of the coordinated ferric ions toward the reduction of hydrogen peroxide can be used for sensitive label-free monitoring of protein kinase activity and inhibition.


Assuntos
Proteínas Quinases Dependentes de AMP Cíclico/metabolismo , Compostos Férricos/metabolismo , Peróxido de Hidrogênio/metabolismo , Peptídeos/metabolismo , Sequência de Aminoácidos , Proteínas Quinases Dependentes de AMP Cíclico/antagonistas & inibidores , Técnicas Eletroquímicas/métodos , Ensaios Enzimáticos/métodos , Íons/metabolismo , Oxirredução , Peptídeos/química , Fosforilação
17.
Chem Commun (Camb) ; 48(88): 10859-61, 2012 Nov 14.
Artigo em Inglês | MEDLINE | ID: mdl-23023396

RESUMO

It is proposed that direct electron transfer is dependent on the orientation of the heme plane in cytochrome c (cyt c) assembled on electrode surfaces. Orientation with the heme plane in cyt c parallel to the gold electrode surface favors the direct electron transfer, while vertical orientation of the heme plane makes the direct electron transfer difficult. A preferable electron transport pathway for cyt c is through the axial ligand (His-18) of the heme center rather than the porphyrin ring.


Assuntos
Citocromos c/química , Ouro/química , Heme/química , Adsorção , Eletroquímica , Eletrodos , Propriedades de Superfície , Molhabilidade
18.
Ying Yong Sheng Tai Xue Bao ; 23(11): 3016-20, 2012 Nov.
Artigo em Zh | MEDLINE | ID: mdl-23431784

RESUMO

Different origins Bt cotton cultivars, including DP410B (conventional cultivar) and Daiza No. 1 (hybridized cultivar) from US and Sikang No. 1 (conventional cultivar) and Sikang No. 3 (hybridized cultivar) from China, were taken as the test materials to investigate the effects of high temperature (37 degrees C) and different humidity (50%, 70%, and 90%) on the leaf Bt protein expression of Bt cotton. At high temperature, temperature and humidity had no significant effects on the leaf Bt protein expression of the cultivars at peak squaring stage. At peak flowering stage, as compared with the control (25-30 degrees C and 60%-70% humidity), 37 degrees C and 50% humidity decreased the leaf Bt protein content of conventional cultivars significantly by 2.6%-3.0%. At peak bolling stage, compared with the control, 37 degrees C and 50% humidity decreased the leaf Bt protein content of DP410B, Sikang No. 1, and Sikang No. 3 significantly by 3.3%-5.8%. Among the four cultivars, DP410B and Daiza No. 1 had the highest leaf Bt protein content, while Sikang No. 1 had the lowest one.


Assuntos
Proteínas de Bactérias/metabolismo , Endotoxinas/metabolismo , Gossypium/metabolismo , Proteínas Hemolisinas/metabolismo , Temperatura Alta , Umidade , Controle Biológico de Vetores/métodos , Folhas de Planta/metabolismo , Animais , Toxinas de Bacillus thuringiensis , Gossypium/genética , Plantas Geneticamente Modificadas
19.
Zhonghua Liu Xing Bing Xue Za Zhi ; 30(12): 1243-7, 2009 Dec.
Artigo em Zh | MEDLINE | ID: mdl-20193306

RESUMO

OBJECTIVE: To understand the distribution of birth weight among premature infants and the associated social factors. METHODS: The study population consisted of 97 537 women who delivered singleton live birth of 20 to 41 gestational weeks in 4 counties/cities, Jiangsu and Zhejiang provinces, China from 1995 to 2000. Chi-square test was employed to test the difference of proportions between respective groups. One- way ANOVA was used to test the differences regarding the mean of gestational weeks at the first prenatal visit and the mean of prenatal visits between the two groups. Multivariate logistic regression was conducted to examine the factors associated with premature birth. RESULTS: Women aged 35 years had higher (8.8%) premature incidence than those aged less than 24 years (5.6%), 25 - 29 years (4.6%), or 30 - 34 years (4.5%, P < 0.001). Women with height less than 149 cm had higher (6.8%) premature incidence than those with height taller than 150 cm (5.0%). Women whose BMI were at least 28 and 24 - 28 had higher (5.5%, 5.5%) premature incidences than those whose BMI were 18.5 - 24.0 (5.0%), < 18.5 (4.6%, P < 0.001). The incidence of premature birth was 6.0% among women without previous pregnancy, higher than that among those women with 4 times of pregnancies (5.7%), 2 times of pregnancies (4.3%), and 3 times of pregnancies (4.0%). Parous women with at least two deliveries had higher (9.3%) premature incidence than the primiparous women (5.2%) and whose women with only one delivery (4.5%, P < 0.001). Women who received early prenatal care had lower 4.7% premature incidence than those who did not receive the service (6.1%). The mean times of prenatal visits among women with premature births was 8.53, less than that of those with full term delivery (10.97). Women with less than four times of prenatal visit had higher (18.9%) premature incidence than those with at least five prenatal visits (4.9%). Multivariate logistic regression showed that premature delivery risk was associated with age, height, BMI, gravidity, parity, early prenatal care, the mean of gestational weeks at first prenatal visit and the mean number of prenatal visits etc. CONCLUSION: Premature delivery risk was associated with factors as age, height, BMI, gravidity, parity, early prenatal care, the mean of gestational weeks at first prenatal visit, the mean number of prenatal visits etc.


Assuntos
Peso ao Nascer , Recém-Nascido Prematuro , Fatores Socioeconômicos , Adulto , China/epidemiologia , Feminino , Humanos , Incidência , Recém-Nascido de Baixo Peso , Recém-Nascido , Doenças do Prematuro/epidemiologia , Gravidez , Fatores de Risco
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA