RESUMO
The study aimed to evaluate the insecticidal activity of extracts of edible mushrooms Pleurotus ostreatus and Lentinula edodes against Rhyssomatus nigerrimus. Methanol:water extracts (70:30) of P. ostreatus and L. edodes were made and evaluated in two in vitro tests (exposure and immersion toxic effect) against R. nigerrimus. Subsequently, the toxicity test of the extracts against Artemia salina was evaluated. These extracts were subjected to colorimetric tests and gas chromatography-mass spectrometry. The results showed a mortality effect against R. nigerrimus of 50% for the P. ostreatus 2 extracts at a concentration of 20% in the immersion test. Likewise, in the toxic effect test, 90% mortality was observed after five days of exposure to a concentration of 10%. On the other hand, for the toxicity test, the extract that showed the values with the highest mortality against A. salina was P. ostreatus, starting with 80% mortality at 100µg/mL. The functional groups present in the extracts were saponins, coumarins, and alkaloids. Furthermore, the presence of more than 7 compounds in the mushroom extracts evaluated is reported. This study demonstrates the insecticidal activity of P. ostreatus and L. edodes fungal extracts and indicates the importance of using different in vitro tests to elucidate the mechanism of action for future studies.
Assuntos
Artrópodes , Inseticidas , Pleurotus , Cogumelos Shiitake , Gorgulhos , Animais , Metanol , ArtemiaRESUMO
In the present study, the nematicidal activity of a Moringa oleifera ethyl acetate leaf extract against the eggs and larvae of Haemonchus contortus and Nacobbus aberrans, nematodes of agricultural importance, was evaluated. The experimental design for the evaluation of the effects against both nematodes consisted of eight treatments (n = 4). Distilled water, Tween (4%) and a commercial anthelmintic agent (ivermectin, 5 mg/mL) were used as controls, and for treatments 4-8, the concentrations of the extract were 20, 10, 5, 2.5 and 1.25 mg/mL, respectively. Readings were taken at 12 h and 24 h for N. aberrans and 48 h and 72 h for H. contortus post-treatment under an optical microscope (10× and 40×). The data obtained were analysed by analysis of variance through a completely randomized factorial design using the SAS V9 program. The results show that, for H. contortus egg hatching, 85.88% inhibition was obtained at a concentration of 20 mg/mL at 48 h, while for third-stage larva (L3) mortality, the highest percentage was 68.19% at 1.25 mg/mL at 72 h. In the case of N. aberrans, the greatest inhibition of egg hatching was 90.69% at 5 mg/mL at 12 h post-treatment, and for larval mortality, it was 100% at 10 mg/mL at 24 h post-treatment. The main major compounds identified by qualitative analysis and by gas chromatography coupled to mass spectrometry were 9,12,15-octadecatrienoic acid, (Z,Z,Z)-, n-hexadecanoic acid and 2,4-di-tert-butylphenol, and the minor compounds included phytol, γ-sitosterol and α-tocopheryl acetate. It was demonstrated that the ethyl acetate leaf extract of M. oleifera Lam. shows great potential for combating agricultural nematodes.
Assuntos
Anti-Helmínticos , Haemonchus , Moringa oleifera , Animais , Anti-Helmínticos/farmacologia , Antinematódeos/farmacologia , Cromatografia Gasosa-Espectrometria de Massas , Larva , Extratos Vegetais/química , Extratos Vegetais/farmacologiaRESUMO
Inflammatory pain associates with spinal glial activation and central sensitization. Systemic administration of IMT504, a non-CpG oligodeoxynucleotide originally designed as an immunomodulator, exerts remarkable anti-allodynic effects in rats with complete Freund´s adjuvant (CFA)-induced hindpaw inflammation. However, the anti-nociceptive mechanisms of IMT504 remain unknown. Here we evaluated whether IMT504 blocks inflammatory pain-like behavior by modulation of spinal glia and central sensitization. The study was performed in Sprague Dawley rats with intraplantar CFA, and a single lumbosacral intrathecal (i.t.) administration of IMT504 or vehicle was chosen to address if changes in glial activation and spinal sensitization relate to the pain-like behavior reducing effects of the ODN. Naïve rats were also included. Von Frey and Randall-Selitto tests, respectively, exposed significant reductions in allodynia and mechanical hypersensitivity, lasting at least 24 h after i.t. IMT504. Analysis of electromyographic responses to electrical stimulation of C fibers showed progressive reductions in wind-up responses. Accordingly, IMT504 significantly downregulated spinal glial activation, as shown by reductions in the protein expression of glial fibrillary acidic protein, CD11b/c, Toll-like receptor 4 (TLR4) and the phosphorylated p65 subunit of NFκB, evaluated by immunohistochemistry and western blot. In vitro experiments using early post-natal cortical glial cultures provided further support to in vivo data and demonstrated IMT504 internalization into microglia and astrocytes. Altogether, our study provides new evidence on the central mechanisms of anti-nociception by IMT504 upon intrathecal application, and further supports its value as a novel anti-inflammatory ODN with actions upon glial cells and the TLR4/NFκB pathway. Intrathecal administration of the non-CpG ODN IMT504 fully blocks CFA-induced mechanical allodynia and hypersensitivity, in association with reduced spinal sensitization. Administration of the ODN also results in downregulated gliosis and reduced TLR4-NF-κB pathway activation. IMT504 uptake into astrocytes and microglia support the concept of direct modulation of CFA-induced glial activation.
Assuntos
Sensibilização do Sistema Nervoso Central , Hiperalgesia , Animais , Hiperalgesia/tratamento farmacológico , Inflamação , Oligodesoxirribonucleotídeos , Dor , Ratos , Ratos Sprague-Dawley , Medula EspinalRESUMO
BACKGROUND: Pulmonary embolism (PE) is a potentially fatal disease related to venous thromboembolism. Information regarding this pathology in the Ecuadorian population is limited. This study aims to present the PE hospital mortality rates (HMR) in Ecuador, analyze its trend and risk factors. METHODS: An epidemiological, descriptive and cross-sectional study based on the reporting and trend analysis of pulmonary embolism HMR in the Ecuadorian population from 2011 to 2018 through the governmental database of the Ecuadorian National Statistics and Census Institute, was conducted. RESULTS: In Ecuador, PE hospital discharges (HD) varied from 358 in 2011 to 424 in 2018. More than 60% of patients were older than 60 years. Also, the frequency of PE with acute cor pulmonale increased from 3.07% in 2011 to 16.98% in 2018 (P<0.05). The HMR by 100 HD increased between 2011 (12.85/100 HD) and 2018 (17.02/100 HD) (P<0.05), with the highest rate reported in 2017 (21.52/100 HD). In the period studied, 505 in-hospital deaths were reported in patients with PE, the average age in this group was 64.3 years, 58.42% were female, and 10.89% had acute cor pulmonale (ICD-10 I26.0). Risk factors associated with PE in-hospital death were acute cor pulmonale (OR 1.63, 95% CI: 1.18 to 2.25, P<0.01) and 60 years or more (OR 1.73, 95% CI 1.40-2.15, P<0.01). CONCLUSION: A significant increase in PE HMR in Ecuador was found. Also, acute cor pulmonale and age of 60 years or more may be potential risk factors for in-hospital death in patients with PE.
Assuntos
Embolia Pulmonar , Doença Cardiopulmonar , Estudos Transversais , Equador/epidemiologia , Feminino , Mortalidade Hospitalar , Humanos , Pessoa de Meia-Idade , Embolia Pulmonar/epidemiologia , Doença Cardiopulmonar/epidemiologiaRESUMO
RATIONALE: Prenatal omega-3 fatty acids improve alveolarization, diminish inflammation, and improve pulmonary growth, but it is unclear whether these outcomes translate into improved postnatal lung function. OBJECTIVE: We assessed the effect of prenatal supplementation with docosahexaenoic acid (DHA) on offspring lung function through 60 months of age. METHODS: We included a cohort of 772 Mexican preschoolers whose mothers participated in a clinical trial (NCT00646360) of supplementation with DHA or a placebo from week 18-22 of gestation through delivery. MEASUREMENTS: The children were followed after birth and anthropometric measurements and forced oscillation tests were performed at 36, 48, and 60 months of age. The effect of DHA was tested using a longitudinal mixed effect models. RESULTS: Overall, mean (Standard Deviation) of the measurements of respiratory system resistance and respiratory system reactance at 6, 8, and 10 Hz during follow up period were 11.3 (2.4), 11.1 (2.4), 10.3 (2.2) and -5.2 (1.6), -4.8 (1.7), -4.6 (1.6), respectively. There were no significant differences in pulmonary function by treatment group. DHA did not affect the average lung function or the trajectories through 60 months. CONCLUSIONS: Prenatal DHA supplementation did not influence pulmonary function in this cohort of Mexican preschoolers.
Assuntos
Suplementos Nutricionais , Ácidos Docosa-Hexaenoicos/administração & dosagem , Efeitos Tardios da Exposição Pré-Natal/epidemiologia , Testes de Função Respiratória , Adolescente , Adulto , Pesos e Medidas Corporais , Desenvolvimento Infantil , Pré-Escolar , Ácidos Graxos Ômega-3/administração & dosagem , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , México/epidemiologia , Gravidez , Adulto JovemRESUMO
Objetivo: Demostrar que la revisión de la cavidad uterina instrumental gentil previene mayormente, la hemorragia posparto en comparación con la revisión manual de la cavidad uterina. Métodos: Estudio observacional, transversal, descriptivo y asociativo. Se llevó a cabo en las pacientes que ingresaron a las unidades toco-quirúrgicas de 2 hospitales públicos en el Estado de México. Muestreo por conveniencia (aquellas pacientes a quienes se les realizó revisión de cavidad uterina, durante la atención del parto). Muestra integrada por 236 pacientes. Resultados: Hubo 76 casos de hemorragia posparto, que se analizaron por grupos de edad, distinguiendo entre adolescentes, en edad reproductiva óptima y en edad materna avanzada, encontrándose mayor incidencia en el primer y tercer grupo, con el 34.4% y 48.3% de los casos, respectivamente. La relación entre hemorragia posparto y tipo de técnica de revisión de cavidad uterina, mostró mayor incidencia en la revisión manual. Los casos analizados según la instrucción del personal que brindó la atención, mostraron mayor número de casos de hemorragias, en quienes fueron atendidos por personal en formación. Los especialistas de Enfermería Perinatal, llevaron a cabo 97 procedimientos de atención de parto, 25 presentaron hemorragia posparto, frente a 72 que no presentaron la patología. Conclusiones: La revisión manual de cavidad uterina se asocia estrechamente con la aparición de hemorragia posparto, en contraste con la revisión instrumentada gentil, en la que se registró menor incidencia de esta complicación. La revisión de cavidad uterina debe practicarse bajo indicaciones precisas, hecho que contribuye a la disminución de complicaciones en el posparto.
Objective: to demonstrate that the gentle instrumental uterine cavity assessment largely prevents postpartum hemorrhage in comparison to the manual assessment. Methods: cross-sectional, observational, descriptive, and associative study on patients admitted to the labor-surgical units of two public hospitals in the State of México, using a convenience sample (patients to whom a uterine cavity assessment was performed during their labor process) of 236. Results: There were 76 total cases of post-partum hemorrhage. Patients were classified in three age groups: adolescents, optimal reproductive age, and advanced maternal age. Post-partum hemorrhage cases were prevalent in the first and third groups with 34.4% and 48.3% respectively. The manual uterine cavity assessment technique resulted in a higher prevalence of post-partum hemorrhage. More post-partum hemorrhage cases were also found in those patients attended by inexpert staff. Perinatal Nursing Specialists, conducted 97 childbirth care procedures, 25 had Postpartum Hemorrhage, compared to 72 who did not have the pathology. Conclusions: The manual uterine cavity assessment technique, is closely associated with the onset of Postpartum Hemorrhage, Gentle instrumented uterine cavity assessment resulted in a lower incidence of post-partum hemorrhage. In order to decrease post-partum complications, the uterine cavity assessment must be performed through precise procedures.
Assuntos
Humanos , Feminino , Gravidez , Adolescente , AdultoRESUMO
Though exposure to air pollution has a detrimental effect on respiratory health, few studies have examined the association between elemental carbon exposure and lung function among schoolchildren. The aim of the present study was to present the association between short-term elemental carbon exposure and lung function in schoolchildren from Mexico City. 55 asthmatic and 40 non-asthmatic children were followed for an average of 22 weeks. A spirometry test was performed every 15 days during follow-up. Portable air samplers collected particulate matter onto Teflon filters. Gravimetric analysis was conducted and elemental carbon was quantified using transmission densitometry. The association between the main variables was analysed using linear mixed effects models. The mean ± sd of elemental carbon light absorption was 92.7 ± 54.7 Mm(-1). An increase of one interquartile range in the 24-h average of elemental carbon (100.93 Mm(-1)) was associated with a significant negative impact on forced expiratory volume in 1 s (FEV(1)) (-62.0 (95% CI -123.3- -1.2) mL) and forced expiratory flow at 25-75% of forced vital capacity (FVC) (FEF(25-75%)) (-111 (95% CI -228.3- -4.1) mL) among asthmatic children, equal to 3.3% and 5.5%, respectively; and on FEV(1) (-95.0 (95% CI -182.3- -8.5) mL) and FVC (-105.0 (95% CI -197.0- -13.7) mL) among non-asthmatic children. Exposure to elemental carbon resulted in an important negative effect on lung function in atopic schoolchildren, regardless of asthma status.
Assuntos
Asma/epidemiologia , Carbono/toxicidade , Pulmão/efeitos dos fármacos , Adolescente , Poluição do Ar , Asma/induzido quimicamente , Criança , Cidades , Densitometria/métodos , Exposição Ambiental , Feminino , Humanos , Pulmão/patologia , Masculino , México , Testes de Função Respiratória , Espirometria/métodosRESUMO
BACKGROUND: The Cuban population is essentially a result of the admixture between Spanish, West African and, to a lesser degree, Amerindian tribes that inhabited the island. AIM: The study analysed the genetic structure of the three principal ethnic groups from Havana City, and the contribution of parental populations to its genetic pool. SUBJECTS AND METHODS: According to genealogical information and anthropological traits, 206 subjects were classified as Mulatto, of Spanish decent or of African descent. Seventeen Ancestry Informative Markers, with high difference in frequency between parental populations, were selected to estimate individual and group admixture proportions. The statistical analyses were performed using the ADMIX, ADMIX95 and STRUCTURE 2.1 packages. RESULTS: The results demonstrate a high level of European and African admixture in Mulattos (57-59% European; 41-43% West African). The European contribution was higher in those of Spanish descent (85%) while in those of African descent, the West African contribution ranged between 74% and 76%. Genetic structure was only detected in Mulattos and those of African descent. An Amerindian contribution was not detectable in the studied sample. CONCLUSION: Our findings indicate the existence of admixture and genetic structure in the population of Havana City. This study represents one of the first steps towards understanding Cuban population admixture in order to produce successful experimental designs for admixture mapping.
Assuntos
População Negra/genética , Etnicidade/genética , Indígenas Sul-Americanos/genética , População Urbana/estatística & dados numéricos , População Branca/genética , Adulto , África Ocidental/etnologia , Antropometria , Doadores de Sangue , Cuba , Etnicidade/estatística & dados numéricos , Feminino , Frequência do Gene , Marcadores Genéticos , Humanos , Masculino , Casamento , Polimorfismo de Nucleotídeo Único , Espanha/etnologiaRESUMO
BACKGROUND: Diet during pregnancy and childhood has been suggested to play an important role in children's asthma risk. We assessed whether the adherence to a Mediterranean dietary pattern, for children in the last 12 months and their mothers during pregnancy, was associated with both childhood asthma and allergic rhinitis. METHODS: A cross-sectional study was conducted in 2004 using a random sample of 1476 children (6- to 7-year old) from the Mexicali region, Mexico. Dietary data of children's intake in the last 12 months and their mothers' intake during pregnancy was collected, through a parental food frequency questionnaire. A Mediterranean diet score was computed [Trichopoulou et al., N Engl J Med 348 (2003), 2599]. Data on seven asthma and rhinitis-related outcomes were obtained from the International Study of Asthma and Allergies in Childhood questionnaire. RESULTS: Adherence to a Mediterranean dietary pattern was inversely associated with asthma ever (OR = 0.60, 95% CI = 0.40-0.91), wheezing ever (0.64, 0.47-0.87), rhinitis ever (0.41, 0.22-0.77), sneezing ever (0.79, 0.59-1.07), current sneezing (0.71, 0.52-0.96) and current itchy-watery eyes (0.63, 0.42-0.95). No associations were found using the mothers' pregnancy diet score, except for current sneezing (0.71, 0.53-0.97). CONCLUSIONS: Our findings suggest a protective effect of following a healthy dietary pattern on asthma and allergic rhinitis in Mexican children.
Assuntos
Asma/epidemiologia , Dieta Mediterrânea , Rinite Alérgica Perene/epidemiologia , Asma/prevenção & controle , Criança , Estudos Transversais , Feminino , Humanos , México , Gravidez , Prevalência , Rinite Alérgica Perene/prevenção & controleRESUMO
La existencia de una relación entre las enfermedades cardiovasculares como la aterosclerosis y las patologías bucales como la enfermedad periodontal; ha sido de gran interés, debido probablemente a que son patologías inflamatorias y de alta prevalencia, que las convierte, sin lugar a dudas, en uno de los principales problemas de salud pública a nivel mundial y que constituyen una de las causas de mayor morbilidad y mortalidad. Gracias al avance en biología molecular, se ha podido identificar diferentes moléculas en pacientes periodontalmente afectados que producen variadas alteraciones a distancia como lo es la Proteína C Reactiva. Esta proteína es un marcador altamente específico y preciso en la detección de procesos inflamatorios e infecciosos, produciéndose un aumento en los niveles plasmáticos de ésta, además de ser de uso clínico corriente, a esta molécula proteica se le reconocen efectos proinflamatorios y esta catalogado como el factor de riesgo cardiovascular por la Asociación Americana del Corazón. Esta revisión se basa fundamentalmente en destacar algunos aspectos de importancia en relación a la proteína C reactiva como marcador de la inflamación y su asociación con la enfermedad periodontal y aterosclerosis.
The cardiovascular diseases as the atherosclerosis have some relation with the periodontal disease; specially, a great interest about the implication of the inflammatory process. Otherwise, The periodontal disease and the arteriosclerosis is of high prevalence in many countries is one of the main problems of public health to world-wide level and constitutes one of the causes of greater morbidity and mortality. The advance in molecular biology has been able to identify different molecules in patients with periodontal diseases with the production of different alterations as in the C-reactive protein. This protein is a precise marker in detection of inflammatory in the infectious processes with the production of high level of the C-reactive protein, also it is involve in the proinflammatory effects. In the last decade it is catalogued as a factor for the cardiovascular risk by the America Associations of The Heart. This revision is bases on different aspects the C-reactive protein as a marker of inflammatory process with the periodontal disease and aterosclerosis.
RESUMO
Between 1982 and 2002, applying the uterine/cervix cancer prevention protocol of the Gynecology Institute of the University of Padua [1] modified to our needs, we diagnosed 5,008 (53.8%) cases of oncogenic risk out of 9,312 evaluated patients. Values were obtained through the analysis of three diagnostic methodologies: colposcopy, cytology and directed biopsy, taking into consideration the limitations of each one of these and their effectiveness in identifying specific abnormalities or pathologies. The results fully demonstrate that the integration of the three diagnostic methodologies is necessary to decrease false-negative results.
Assuntos
Doenças dos Genitais Femininos/epidemiologia , Doenças dos Genitais Femininos/patologia , Programas de Rastreamento/estatística & dados numéricos , Lesões Pré-Cancerosas/epidemiologia , Lesões Pré-Cancerosas/patologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Biópsia/estatística & dados numéricos , Colposcopia/estatística & dados numéricos , Citodiagnóstico/estatística & dados numéricos , Feminino , Humanos , Anamnese/estatística & dados numéricos , Pessoa de Meia-Idade , Panamá/epidemiologia , Estudos Retrospectivos , Esfregaço Vaginal/estatística & dados numéricosRESUMO
During 20 years of preventive study of the oncogenic risk of cervix-uterine cancer in the Republic of Panama, applying the protocol of the Gynecology Institute of the University of Padua, Italy, we diagnosed 5,009 cases out of the 9,312 patients studied. We classified them according to the degree of the pathology, guiding the patients to the appropriate treatment and the respective follow-up, and concluding that those women who do not follow recommendations have five times more probability of suffering from cervix-uterine cancer. Moreover, the age groups between 20 and 40 years old with HPV infection that do not have access to these procedures are highly vulnerable.
Assuntos
Neoplasias do Colo do Útero/epidemiologia , Neoplasias do Colo do Útero/patologia , Neoplasias Uterinas/epidemiologia , Neoplasias Uterinas/patologia , Biópsia/estatística & dados numéricos , Colposcopia/estatística & dados numéricos , Feminino , Humanos , Panamá/epidemiologia , Infecções por Papillomavirus/complicações , Infecções por Papillomavirus/epidemiologia , Estudos Retrospectivos , Fatores de Risco , Resultado do Tratamento , Neoplasias do Colo do Útero/prevenção & controle , Neoplasias do Colo do Útero/virologia , Neoplasias Uterinas/prevenção & controle , Neoplasias Uterinas/virologiaRESUMO
SETTING: A tuberculosis clinic associated with a university hospital in Monterrey, Mexico, an urban community with high tuberculosis incidence. OBJECTIVE: To determine the diversity of DNA fingerprint patterns and the extent of drug resistance of Mycobacterium tuberculosis isolates from patients who attended the clinic. DESIGN: Isolates of M. tuberculosis obtained from 186 patients during the period from 31 January 1996 to 31 March 1998 were tested for susceptibility to isoniazid, rifampicin, ethambutol and streptomycin. Demographic data and the social history of each patient were obtained prospectively by interview. The IS6110 DNA fingerprints were obtained for 166 of the 186 isolates. Secondary typing was carried out on isolates with fewer than six copies of IS6110. RESULTS: Thirty-two per cent of the tested isolates (60/ 186) were drug-resistant, and 18% (33/186) were multidrug-resistant. Approximately 55% of the resistant isolates (33/60) were attributed to acquired resistance. A total of 106 different IS6110 fingerprint patterns were observed among the 166 fingerprinted isolates. Based on both IS6110 and pTBN12 fingerprinting, 65 (39%) of the 166 isolates were part of 22 DNA fingerprint clusters. Various drug susceptibility patterns were seen in most clusters. CONCLUSION: Fingerprint clustering indicates extensive recent transmission of tuberculosis in patients attending the clinic. The prevalence of drug-resistant tuberculosis is high.
Assuntos
Antituberculosos/administração & dosagem , Resistência a Múltiplos Medicamentos , Mycobacterium tuberculosis/efeitos dos fármacos , Mycobacterium tuberculosis/genética , Tuberculose Resistente a Múltiplos Medicamentos/tratamento farmacológico , Tuberculose Resistente a Múltiplos Medicamentos/epidemiologia , Adulto , Idoso , Antituberculosos/farmacologia , Intervalos de Confiança , Impressões Digitais de DNA , Feminino , Hospitais Universitários , Humanos , Incidência , Masculino , México/epidemiologia , Testes de Sensibilidade Microbiana , Pessoa de Meia-Idade , Razão de Chances , Probabilidade , Fatores de Risco , Tuberculose Resistente a Múltiplos Medicamentos/genética , População UrbanaRESUMO
OBJECTIVE: To assess the prevalence and severity of asthma and allergic diseases in schoolchildren residing in Ciudad Juarez, Chihuahua. MATERIAL AND METHODS: A cross-sectional study was conducted from April 1998 to May 1999, among 6,174 children from 53 schools in Ciudad Juarez, Chihuahua. The method used was the one recommended by the International Study of Asthma and Allergies in Childhood (ISAAC) to determine the prevalence and severity of asthma, rhinitis, and eczema. Parents were asked to answer a standardized questionnaire on current and cumulative prevalence of asthma, rhinitis, and eczema. A sample stratified by level of pollution was selected. RESULTS: The cumulative prevalence of medically diagnosed asthma and wheezing was 6.8% (95% CI 6.2, 7.4) and 20% (95% CI 19.7, 21.8), respectively. The prevalence of wheezing in the last 12 months was higher in the group aged 6-8 years than in those aged 11-14 years (9.7% vs. 5.8%, p < 0.01). The prevalence of medically diagnosed rhinitis was 5.0% (95% CI 4.5, 5.6). The prevalence of medically diagnosed eczema was 4.9% (4.3, 5.4). The prevalence of eczema symptoms in the last 12 months was 12.7% in the 6-8 years group and 13.3% in the 11-14 year group, respectively. Severe symptoms of asthma were significantly higher in the 6-8 years group and during the autumn months. CONCLUSIONS: The prevalence of medically diagnosed and symptomatic asthma was relatively low in comparison with findings from others studies that use similar methods, but the prevalence rates of rhinitis and eczema were higher.
Assuntos
Asma/epidemiologia , Hipersensibilidade/epidemiologia , Criança , Feminino , Humanos , Masculino , México , Prevalência , População UrbanaRESUMO
The key findings of a solid waste characterisation study conducted at the Guadalajara Metropolitan Zone, Mexico, are reported. Objectives of the study were to estimate the daily generation rate of household (HSW) and municipal solid waste (MSW), characterise and compare their composition by type of material, determine the proportion that HSW contributes to MSW, explore changes in MSW composition through time after final disposal, and estimate the types and amount of MSW that are sorted out for recycling at final disposal sites. HSW generated during seven days by a sample of 300 households chosen through a two-stage stratified sampling design was collected, weighed and classified. MSW entering the four local disposal sites was recorded for 12 weeks, and materials' sorting was quantified. MSW samples taken by excavating trenches in two final disposal sites were also characterised. The average per capita daily HSW generation rate was 508 g. HSW mainly consisted of putrescible waste (53%), paper (10%) and plastic (9%). The average daily generation rate of MSW was 3119.2 metric tonnes. HSW represented 55.9% of MSW, and the main difference between HSW and MSW was a lower proportion of organic materials (53% vs. 16.5%, respectively). The major changes in MSW composition through time after final disposal, were the result of the quick decomposition of putrescible materials. Only 2.2% of total MSW generated in Guadalajara (mainly package waste) was sorted for recycling.
Assuntos
Conservação dos Recursos Naturais , Monitoramento Ambiental , Eliminação de Resíduos , Cidades , MéxicoRESUMO
Two cases with complete bronchial stenosis of the mainstem bronchus secondary to thoracic blunt trauma are presented. One patient had hemoneumothorax on the left side, the other one had bilateral hemothorax. Both were initially treated with drainage by thoracostomy tube with partial resolution of the thoracic bloody pleural collection. Later, the two patients developed complete atelectasis of the lung, one on the left side and the other one in the right; this later case was subject to lung decortication. The fiberopticbronchoscopy showed a complete occlusion of the mainstem bronchus in both patients. A bronchoplasty with sleeve resection of the stenotic segment was performed; the lumen of the bronchus was preserved by an end-to-end suture with separate stitchs of Vycryl 0000. Both cases remain without bronchopulmonary pathology after 4 years of follow-up of bronchoplasty. In cases of blunt thoracic trauma, it is important to consider the possibility of bronchial rupture. The importance of bronchoscopic diagnosis and surgical treatment is stressed.
Assuntos
Acidentes de Trânsito , Broncopatias/etiologia , Traumatismos Torácicos/complicações , Ferimentos não Penetrantes/complicações , Adolescente , Broncopatias/diagnóstico por imagem , Broncopatias/cirurgia , Constrição Patológica/diagnóstico por imagem , Constrição Patológica/etiologia , Constrição Patológica/cirurgia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Radiografia , Traumatismos Torácicos/diagnóstico por imagem , Traumatismos Torácicos/cirurgia , Ferimentos não Penetrantes/diagnóstico por imagem , Ferimentos não Penetrantes/cirurgiaRESUMO
Biological differences and molecular variability between six phenotypically distinct tobacco-infecting geminivirus isolates from southern Africa (Zimbabwe) and Mexico were investigated. Host range studies conducted with tobacco virus isolates ZIM H from Zimbabwe and MEX 15 and MEX 32 from Mexico indicated all had narrow host ranges restricted to the Solanaceae. Alignment of coat protein gene (CP) and common region (CR) sequences obtained by PCR, and phylogenetic analysis of the CP sequences indicated Zimbabwean isolates were distantly related to those from Mexico and that geographically proximal isolates shared their closest affinities with Old and New World geminiviruses, respectively. Zimbabwean isolates formed a distinct cluster of closely related variants (> 98% sequence identity) of the same species, while MEX 15 segregated independently from MEX 32, the former constituting a distinct species among New World geminiviruses, and the latter being a variant, Texas pepper virus-Chiapas isolate (TPV-CPS) with 95% sequence identity to TPV-TAM. Results collectively indicated a geographic basis for phylogenetic relationships rather than a specific affiliation with tobacco as a natural host. MEX 15 is provisionally described as a new begomovirus, tobacco apical stunt virus, TbASV, whose closest CP relative is cabbage leaf curl virus, and ZIM isolates are provisionally designated as tobacco leaf curl virus, TbLCV-ZIM, a new Eastern Hemisphere begomovirus, which has as its closest relative, chayote mosaic virus from Nigeria.