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1.
Climacteric ; 25(3): 293-299, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-34423699

RESUMO

OBJECTIVE: This study aimed to evaluate anthropometric, biochemical and clinical parameters in climacteric yoga practitioners. METHODS: This study investigated 108 climacteric women. We recruited 28 women between 40 and 65 years old who started yoga practices in premenopause and had already practiced for at least 5 years. As controls, we selected 30 physical activity (PA) practitioners who had practiced for at least 5 years and 50 sedentary women in the same age range. We conduced anthropometric, biochemical and blood pressure measurements. RESULTS: The yoga group had significantly lower fasting blood glucose than the PA practitioners and sedentary women. Yoga practitioners also had lower weight, body mass index, waist circumference, body fat percentage and waist-to-height ratio; higher levels of high-density lipoprotein cholesterol; lower levels of triglycerides, insulin, Homeostasis Model Assessment of Insulin Resistance, uric acid, apolipoprotein B and high-sensitivity C-reactive protein; and lower frequency of metabolic syndrome, lipid accumulation product, visceral adiposity index and systolic blood pressure than the sedentary women. CONCLUSION: Yoga practitioners had lower glucose serum concentrations than the PA practitioners and sedentary women. Overall, the yoga group also had better anthropometric, biochemical and clinical variables than the other groups. Although further investigation is required, yoga practice in premenopause seems to be beneficial for women when they reach menopause.


Assuntos
Yoga , Adulto , Idoso , Antropometria , Índice de Massa Corporal , Feminino , Humanos , Masculino , Menopausa , Pessoa de Meia-Idade , Circunferência da Cintura
2.
Br J Nutr ; 123(9): 1003-1012, 2020 05 14.
Artigo em Inglês | MEDLINE | ID: mdl-31964426

RESUMO

A child's diet contains nutrients and other substances that influence intestinal health. The present study aimed to evaluate the relations between complementary feeding, intestinal barrier function and environmental enteropathy (EE) in infants. Data from 233 children were obtained from the Brazilian site of the Etiology, Risk Factors, and Interactions of Enteric Infections and Malnutrition and the Consequences for Child Health and Development Project cohort study. Habitual dietary intake from complementary feeding was estimated using seven 24-h dietary recalls, from 9 to 15 months of age. Intestinal barrier function was assessed using the lactulose-mannitol test (L-M), and EE was determined as a composite measure using faecal biomarkers concentrations - α-1-antitrypsin, myeloperoxidase (MPO) and neopterin (NEO) at 15 months of age. The nutrient adequacies explored the associations between dietary intake and the intestinal biomarkers. Children showed adequate nutrient intakes (with the exception of fibre), impaired intestinal barrier function and intestinal inflammation. There was a negative correlation between energy adequacy and L-M (ρ = -0·19, P < 0·05) and between folate adequacy and NEO concentrations (ρ = -0·21, P < 0·01). In addition, there was a positive correlation between thiamine adequacy and MPO concentration (ρ = 0·22, P < 0·01) and between Ca adequacy and NEO concentration (ρ = 0·23; P < 0·01). Multiple linear regression models showed that energy intakes were inversely associated with intestinal barrier function (ß = -0·19, P = 0·02), and fibre intake was inversely associated with the EE scores (ß = -0·20, P = 0·04). Findings suggest that dietary intake from complementary feeding is associated with decreased intestinal barrier function and EE in children.


Assuntos
Dieta/normas , Enterite/etiologia , Fenômenos Fisiológicos da Nutrição do Lactente , Intestinos/fisiologia , Brasil/epidemiologia , Aleitamento Materno , Estudos de Coortes , Enterite/epidemiologia , Feminino , Humanos , Lactente , Masculino , Estado Nutricional
3.
Infect Immun ; 86(7)2018 07.
Artigo em Inglês | MEDLINE | ID: mdl-29661930

RESUMO

Enterotoxigenic Escherichia coli (ETEC) is a major cause of traveler's diarrhea as well as of endemic diarrhea and stunting in children in developing areas. However, a small-mammal model has been badly needed to better understand and assess mechanisms, vaccines, and interventions. We report a murine model of ETEC diarrhea, weight loss, and enteropathy and investigate the role of zinc in the outcomes. ETEC strains producing heat-labile toxins (LT) and heat-stable toxins (ST) that were given to weaned C57BL/6 mice after antibiotic disruption of normal microbiota caused growth impairment, watery diarrhea, heavy stool shedding, and mild to moderate intestinal inflammation, the latter being worse with zinc deficiency. Zinc treatment promoted growth in zinc-deficient infected mice, and subinhibitory levels of zinc reduced expression of ETEC virulence genes cfa1, cexE, sta2, and degP but not of eltA in vitro Zinc supplementation increased shedding and the ileal burden of wild-type (WT) ETEC but decreased shedding and the tissue burden of LT knockout (LTKO) ETEC. LTKO ETEC-infected mice had delayed disease onset and also had less inflammation by fecal myeloperoxidase (MPO) assessment. These findings provide a new murine model of ETEC infection that can help elucidate mechanisms of growth, diarrhea, and inflammatory responses as well as potential vaccines and interventions.


Assuntos
Toxinas Bacterianas/metabolismo , Diarreia/fisiopatologia , Escherichia coli Enterotoxigênica/metabolismo , Infecções por Escherichia coli/fisiopatologia , Zinco/metabolismo , Animais , Diarreia/microbiologia , Modelos Animais de Doenças , Camundongos , Camundongos Endogâmicos C57BL
4.
Epidemiol Infect ; 146(6): 688-697, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-29534766

RESUMO

Improving understanding of the pathogen-specific seasonality of enteric infections is critical to informing policy on the timing of preventive measures and to forecast trends in the burden of diarrhoeal disease. Data obtained from active surveillance of cohorts can capture the underlying infection status as transmission occurs in the community. The purpose of this study was to characterise rotavirus seasonality in eight different locations while adjusting for age, calendar time and within-subject clustering of episodes by applying an adapted Serfling model approach to data from a multi-site cohort study. In the Bangladesh and Peru sites, within-subject clustering was high, with more than half of infants who experienced one rotavirus infection going on to experience a second and more than 20% experiencing a third. In the five sites that are in countries that had not introduced the rotavirus vaccine, the model predicted a primary peak in prevalence during the dry season and, in three of these, a secondary peak during the rainy season. The patterns predicted by this approach are broadly congruent with several emerging hypotheses about rotavirus transmission and are consistent for both symptomatic and asymptomatic rotavirus episodes. These findings have practical implications for programme design, but caution should be exercised in deriving inferences about the underlying pathways driving these trends, particularly when extending the approach to other pathogens.


Assuntos
Análise por Conglomerados , Transmissão de Doença Infecciosa , Infecções por Rotavirus/epidemiologia , Estações do Ano , África/epidemiologia , Ásia/epidemiologia , Pré-Escolar , Estudos de Coortes , Humanos , Lactente , Recém-Nascido , Prevalência , Infecções por Rotavirus/transmissão , América do Sul/epidemiologia
5.
Med Oral Patol Oral Cir Bucal ; 23(6): e691-e697, 2018 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-30341265

RESUMO

BACKGROUND: To investigate the skeletal development of HIV infected children through a morphological analysis of the cervical vertebrae (CV) in lateral cephalometric radiographs. MATERIAL AND METHODS: The sample consisted of 86 lateral cephalometric radiographs of male and female children aged between 6 and 14 years old. The radiographs were equally distributed in groups 1 (HIV infected children) and 2 (non-infected children, paired by sex and age). Two examiners analyzed the CV according to the method of Hassel and Farman (1995). Spearman correlation coefficient was used to associate age and skeletal development within groups, while Mann-Whitney test compared the skeletal development between groups. RESULTS: The correlation of age and skeletal development in group 1 reached 0.17, 0.27 and 0.27 (p>0.05) for C2, C3 and C4, respectively, while in group 2 it reached 0.65, 0.54 and 0.60, respectively (p<0.001). Differences were not significant between groups (p>0.05). CONCLUSIONS: HIV infected and non-infected children showed a similar development of the CV. However, the weak correlation between age and CV development in HIV infected children highlights the need for careful decisions prior to therapeutic approaches - especially those founded on the prediction of skeletal development, such as maxillofacial surgeries, and orthopedic and orthodontic procedures.


Assuntos
Terapia Antirretroviral de Alta Atividade , Desenvolvimento Ósseo , Cefalometria , Vértebras Cervicais/anatomia & histologia , Vértebras Cervicais/diagnóstico por imagem , Infecções por HIV/tratamento farmacológico , Infecções por HIV/fisiopatologia , Adolescente , Terapia Antirretroviral de Alta Atividade/efeitos adversos , Criança , Feminino , Humanos , Masculino , Radiografia
6.
Genet Mol Res ; 15(1)2016 Mar 28.
Artigo em Inglês | MEDLINE | ID: mdl-27051005

RESUMO

The Triatominae subfamily consists of 150 species in 18 genera, grouped into six tribes. In cytogenetics, triatomines are important biological models because they have holocentric chromosomes and nucleolar persistence in meiosis. The phenomenon of nucleolar persistence has been described for 23 species of triatomine in three genera: Triatoma, Rhodnius, and Panstrongylus. However, new species and genera should be analyzed to assess whether nucleolar persistence is a peculiarity of Triatominae. Thus, this study aimed to analyze nucleolar behavior during spermatogenesis of Meccus pallidipennis and M. longipennis, focusing on the nucleolar-persistence phenomenon. Through the analysis of spermatogenesis, more specifically of meiotic metaphase, we observed the phenomenon of nucleolar persistence in M. pallidipennis and M. longipennis, represented by remnants of nucleolar material in metaphase. Thus, although nucleologenesis of new species, and, especially, new genera, should be analyzed, this study confirms for the first time the phenomenon of nucleolar persistence in the genus Meccus. Therefore, we emphasize the importance of new studies in this area in order to assess whether this phenomenon is truly a synapomorphy of these hematophagous insects.


Assuntos
Meiose/fisiologia , Espermatogênese/fisiologia , Triatominae/fisiologia , Animais , Nucléolo Celular/genética , Nucléolo Celular/metabolismo , Nucléolo Celular/fisiologia , Masculino , Meiose/genética , Espermatogênese/genética , Triatominae/citologia
7.
Braz J Med Biol Res ; 57: e13309, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38656073

RESUMO

Diabetic-metabolic syndrome (MetS-D) has a high prevalence worldwide, in which an association with the rupture of the intestinal epithelium barrier function (IEBF) has been pointed out, but the functional and morphological properties are still not well understood. This study aimed to evaluate the impact of acute hyperglycemia diabetes on intestinal tight junction proteins, metabolic failure, intestinal ion and water transports, and IEBF parameters. Diabetes was induced in male Rattus norvegicus (200-310 g) with 0.5 mL of streptozotocin (70 mg/kg). Glycemic and clinical parameters were evaluated every 7 days, and intestinal parameters were evaluated on the 14th day. The MetS-D animals showed a clinical pattern of hyperglycemia, with increases in the area of villi and crypts, lactulose:mannitol ratio, myeloperoxidase (MPO) activity, and intestinal tissue concentrations of malondialdehyde (MDA), but showed a reduction in reduced glutathione (GSH) when these parameters were compared to the control. The MetS-D group had increased secretion of Na+, K+, Cl-, and water compared to the control group in ileal tissue. Furthermore, we observed a reduction in mRNA transcript of claudin-2, claudin-15, and NHE3 and increases of SGLT-1 and ZO-1 in the MetS-D group. These results showed that MetS-D triggered intestinal tissue inflammation, oxidative stress, complex alterations in gene regulatory protein transcriptions of intestinal transporters and tight junctions, damaging the IEBF and causing hydroelectrolyte secretion.


Assuntos
Diabetes Mellitus Experimental , Hiperglicemia , Mucosa Intestinal , Junções Íntimas , Animais , Masculino , Mucosa Intestinal/metabolismo , Mucosa Intestinal/patologia , Diabetes Mellitus Experimental/metabolismo , Hiperglicemia/metabolismo , Junções Íntimas/metabolismo , Ratos , Inflamação/metabolismo , Modelos Animais de Doenças , Ratos Wistar , Síndrome Metabólica/metabolismo , Síndrome Metabólica/fisiopatologia
8.
Artigo em Inglês | MEDLINE | ID: mdl-38697879

RESUMO

INTRODUCTION: Although some studies have reported the association between uric acid (UA) and hypertension, evidence on prehypertension is still lacking. Therefore, the objective of this study was to determine the levels of UA and other cardiovascular markers among prehypertensive and hypertensive patients and assess their risk for developing arterial hypertension. METHODS: 157 individuals were recruited: 67 normotensive, 23 pre-hypertensive and 67 hypertensive. Blood samples were collected to measure biochemical parameters and anthropometric measurements and blood pressure were evaluated. We calculated the product of lipid accumulation and the visceral adiposity index to assess cardiovascular risk. RESULTS: Our data showed an increase in UA levels in normotensives (4.9±1.3mg/dL), prehypertensives (5.2±1.3mg/dL) and hypertensives (5.9±1.6mg/dL) (p=0.004). We found a higher frequency of hyperuricemia in the hypertensive group (34.3%) than in the normotensive group (13.4%, p<0.05). Hypertensive volunteers had lower levels of HDL-C (p=0.004 and p=0.003) and higher body mass indexes (p<0.001 and p=0.007), glucose (p<0.001 and p=0.033), triglycerides (p=0.001 and p=0.005), visceral adiposity index (p<0.001 and p=0.002) and lipid accumulation product (p<0.001 and p=0.007) than normotensive and prehypertensive participants. We also observed that individuals with UA≥6.2mg/dL had an increased risk of hypertension of 4.77 (p=0.003) compared to individuals with levels≤4.3mg/dL. CONCLUSION: Our results showed that UA is associated with increased blood pressure and unfavorable changes in anthropometric and biochemical parameters, which represent risk factors for hypertension and cardiovascular diseases.

10.
Braz J Med Biol Res ; 56: e12996, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37878889

RESUMO

Pain is present in the dental clinic, whether due to oral problems such as dental caries and its complications or related to dental procedures. Pain evaluation in patients with communication difficulties (PCDs) is challenging for dentists, potentially compromising treatment. The aim of this study was to develop and validate an instrument to assess the perception of dentists about pain in PCDs. This study followed a quantitative methodological approach involving constructing and validating an instrument administered to 50 dentists. The initial instrument consisted of 29 items divided into four domains. Content and construct validity and internal consistency were confirmed. Content validation was performed by judges using the Content Validity Index. The instrument underwent construct validation and internal consistency assessments through exploratory factor analysis and confirmatory factor analysis using Cronbach's α, Kaiser-Meyer-Olkin, and Bartlett's sphericity tests. The final instrument consisted of 21 items divided into three domains, with a high Cronbach's α for one domain and moderate values for the others. The total variance accounted for was above 46.03%. Each factor retained at least three items, with factor loadings greater than 0.3, commonalities greater than 0.2, and eigenvalues >1. Despite the study's limitations, the instrument demonstrated its applicability and potential in evaluating the perception and management of pain in PCDs.


Assuntos
Cárie Dentária , Humanos , Inquéritos e Questionários , Reprodutibilidade dos Testes , Dor , Percepção , Odontólogos
11.
Genet Mol Res ; 11(2): 1752-61, 2012 Jun 29.
Artigo em Inglês | MEDLINE | ID: mdl-22843052

RESUMO

We examined the prevalence of human papillomavirus (HPV) infection in a sample of Brazilian women presenting normal cervical cytology. Possible interactions between patient characteristics and HPV infection were analyzed in order to provide background data to improve cervical cancer screening and prophylaxis. Cervical samples of 399 women, received for routine evaluation in the Health Department of Ouro Preto, MG, Brazil, were subjected to HPV-DNA testing by PCR with MY09/11 primers. HPV-positive specimens were typed by RFLP. A structured epidemiological questionnaire was administered to each woman. HPV prevalence among these cytologically normal women was 11%. Twelve viral types were detected, the most common being HPV-16, -6, -61, -83, and -66. HPV was more prevalent in younger women; high-risk viral types were detected in 61% of the infected women and 27% of the infected women had multiple HPV infections. Significant associations of HPV infection were found with age, literacy, residence, marital status, lifetime number of sexual partners, and parity. We detected a great diversity of HPV types in women with normal cytology. This kind of information about local populations is useful for HPV prevention and vaccination strategies.


Assuntos
Colo do Útero/patologia , Papillomavirus Humano 16/genética , Papillomavirus Humano 6/genética , Infecções por Papillomavirus/patologia , Adolescente , Adulto , Idoso , Brasil/epidemiologia , Colo do Útero/virologia , Feminino , Humanos , Pessoa de Meia-Idade , Análise Multivariada , Infecções por Papillomavirus/epidemiologia , Infecções por Papillomavirus/virologia , Prevalência , Esfregaço Vaginal , Adulto Jovem
12.
Genet Mol Res ; 10(2): 1277-89, 2011 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-21732291

RESUMO

The plant hormone ethylene is involved in several developmental and physiological processes in plants, including senescence, fruit ripening and organ abscission, as well as in biotic and abiotic stress responses. Initiation of these processes involves complex regulation of both ethylene biosynthesis and the ability of cells to perceive the hormone and respond in an appropriate manner, a process which is regulated both spatially and temporally. Ethylene is a gaseous hormone whose sensitivity is a key factor to limiting its response in target cells. We made a search of the Coffee Expressed Sequence Tag (CAFEST) database for expressed sequence tags related to known elements of the ethylene signaling pathway. Sequences showing a reliable similarity were clusterized, annotated and analyzed for conserved domains. Multiple alignments comprising the sequences that we found and sequences of ethylene signaling elements from other species were made, and their phylogeny was assessed by phylogenetic trees constructed with the MEGA4 software. The expression profile was assessed by in silico Northern blot analysis performed using the Cluster and TreeView programs. The CAFEST database was found to have a large number of sequences related to previously described ethylene signaling pathway elements, allowing identification of putative members from almost every step of this pathway. The phylogenetic trees demonstrated high similarity between the sequences found in the CAFEST and those from other species, and the electronic Northern blot analysis detected their expression in various tissues, development stages and stress conditions.


Assuntos
Café/metabolismo , Etilenos/metabolismo , Transdução de Sinais , Café/genética , Etiquetas de Sequências Expressas , Genes de Plantas , Filogenia
13.
Braz J Med Biol Res ; 53(5): e9211, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32321150

RESUMO

Strenuous exercise triggers deleterious effects on the intestinal epithelium, but their mechanisms are still uncertain. Here, we investigated whether a prolonged training and an additional exhaustive training protocol alter intestinal permeability and the putative effect of alanyl-glutamine (AG) pretreatment in this condition. Rats were allocated into 5 different groups: 1) sedentary; 2 and 3) trained (50 min per day, 5 days per week for 12 weeks) with or without 6 weeks oral (1.5 g/kg) AG supplementation; 4 and 5) trained and subjected to an additional exhaustive test protocol with or without oral AG supplementation. Venous blood samples were collected to determine gasometrical indices at the end of the 12-week protocol or after exhaustive test. Lactate and glucose levels were determined before, during, and after the exhaustive test. Ileum tissue collected after all experimental procedures was used for gene expression analysis of Zonula occludens 1 (ZO-1), occludin, claudin-2, and oligopeptide transporter 1 (PepT-1). Intestinal permeability was assessed by urinary lactulose/mannitol test collected after the 12-week protocol or the exhaustive test. The exhaustive test decreased pH and base excess and increased pCO2. Training sessions delayed exhaustion time and reduced the changes in blood glucose and lactate levels. Trained rats exhibited upregulation of PEPT-1, ZO-1, and occludin mRNA, which were partially protected by AG. Exhaustive exercise induced intestinal paracellular leakage associated with the upregulation of claudin-2, a phenomenon protected by AG treatment. Thus, AG partially prevented intestinal training adaptations but also blocked paracellular leakage during exhaustive exercise involving claudin-2 and occludin gene expression.


Assuntos
Dipeptídeos/administração & dosagem , Mucosa Intestinal/efeitos dos fármacos , Mucosa Intestinal/fisiopatologia , Permeabilidade/efeitos dos fármacos , Condicionamento Físico Animal/fisiologia , Animais , Masculino , Modelos Animais , Ratos , Ratos Wistar
14.
Genet Mol Res ; 8(4): 1437-43, 2009 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-20013657

RESUMO

Human papillomavirus (HPV) has been extensively studied concerning genomic structure, infection mechanisms, and diversity of types, as well as disease progression stages and development of vaccines. HPV type prevalence can differ in specific populations in different countries, according to ethnicity. This is the first report of an integrated project to evaluate the incidence of HPV types in different regions in Brazil in order to obtain data for vaccine development. Cervical samples were collected from women seen at a public hospital in Pernambuco, Northeast Brazil, for routine evaluation of genital alterations. Selection of the patients was random. There was a strong prevalence of HPV16 and a high incidence of HPV types 31 and 33. These data foster the discussion about the need to evaluate viral prevalence in each geographic region in order to develop targeted vaccine programs.


Assuntos
Alphapapillomavirus/isolamento & purificação , Colo do Útero/virologia , Alphapapillomavirus/classificação , Alphapapillomavirus/genética , Brasil , Feminino , Humanos , Reação em Cadeia da Polimerase , Especificidade da Espécie
15.
Med Chem ; 5(1): 74-8, 2009 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-19149652

RESUMO

Benzodiazepines are among the most frequently prescribed drugs and are often related with dry mouth. Pilocarpine is a cholinergic agonist that increases salivary flow rate and has been used to treat xerostomia. This study aimed to measure salivary flow rate of rats under chronic treatment with benzodiazepine (Diazepam), to analyze by histomorphometry the effects of the drug in the parotids glands and to verify the effect of the pilocarpine in glandular parenchyma and in the salivary flow rate. Seventy-two male Wistar rats were allocated to four groups. Control groups received saline during 60 days (C60) and pilocarpine (Pilo) during 60 days. Experimental groups were dealt with Diazepam associated with saline (DS), and Diazepam associated with pilocarpine (DP) during 60 days. The stimulated salivary flow rate was obtained by using the gravimetric method. After the animals were killed, parotid glands were removed and mass and size were determined. The specimens were processed and stereological analysis revealed cell volume. Mean values of size and salivary flow rate varied from 9.007 mm and 0.015 mg/min in DS to 7.854 mm and 0.029 mg/min in DP, respectively. ANOVA showed statistically significant differences between groups for size (p=0.0028) and salivary flow rate (p=0.0003). Psychotropic drugs caused hyposalivation in rats and acinar hypertrophy in their parotid glands. Pilocarpine, a cholinergic agonist with topical appliance, showed significant secretagogue action in the treatment of hyposalivation induced by Diazepam chronic use.


Assuntos
Benzodiazepinas/farmacologia , Glândula Parótida/efeitos dos fármacos , Pilocarpina/farmacologia , Salivação/efeitos dos fármacos , Animais , Benzodiazepinas/efeitos adversos , Masculino , Glândula Parótida/patologia , Ratos , Ratos Wistar
16.
Braz. j. med. biol. res ; 57: e13309, fev.2024. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1557314

RESUMO

Abstract Diabetic-metabolic syndrome (MetS-D) has a high prevalence worldwide, in which an association with the rupture of the intestinal epithelium barrier function (IEBF) has been pointed out, but the functional and morphological properties are still not well understood. This study aimed to evaluate the impact of acute hyperglycemia diabetes on intestinal tight junction proteins, metabolic failure, intestinal ion and water transports, and IEBF parameters. Diabetes was induced in male Rattus norvegicus (200-310 g) with 0.5 mL of streptozotocin (70 mg/kg). Glycemic and clinical parameters were evaluated every 7 days, and intestinal parameters were evaluated on the 14th day. The MetS-D animals showed a clinical pattern of hyperglycemia, with increases in the area of villi and crypts, lactulose:mannitol ratio, myeloperoxidase (MPO) activity, and intestinal tissue concentrations of malondialdehyde (MDA), but showed a reduction in reduced glutathione (GSH) when these parameters were compared to the control. The MetS-D group had increased secretion of Na+, K+, Cl-, and water compared to the control group in ileal tissue. Furthermore, we observed a reduction in mRNA transcript of claudin-2, claudin-15, and NHE3 and increases of SGLT-1 and ZO-1 in the MetS-D group. These results showed that MetS-D triggered intestinal tissue inflammation, oxidative stress, complex alterations in gene regulatory protein transcriptions of intestinal transporters and tight junctions, damaging the IEBF and causing hydroelectrolyte secretion.

17.
Genet Mol Res ; 7(4): 1119-26, 2008 Oct 21.
Artigo em Inglês | MEDLINE | ID: mdl-19048490

RESUMO

Papillomaviruses have been reported to be very difficult to grow in cell culture. Also, there are no descriptions of cell cultures from lesions of bovine cutaneous papillomatosis, with identification of different bovine papilloma virus (BPV) DNA sequences. In the present report, we describe primary cell cultures from samples of cutaneous lesions (warts). We investigated the simultaneous presence of different BPV DNA sequences, comparing the original lesion to different passages of the cell cultures and to peripheral blood. BPV 1, 2 and 4 DNA sequences were found in lesion samples, and respective cell cultures and peripheral blood, supporting our previous hypothesis of the possible activity of these sequences in different samples and now also showing how they can be maintained in different passages of cell cultures.


Assuntos
Papillomavirus Bovino 1/genética , Doenças dos Bovinos/virologia , Papiloma/veterinária , Verrugas/veterinária , Animais , Bovinos , Doenças dos Bovinos/patologia , Técnicas de Cultura de Células , DNA Viral/análise , DNA Viral/genética , Feminino , Masculino , Papiloma/patologia , Papiloma/virologia , Verrugas/patologia , Verrugas/virologia
18.
Braz. j. med. biol. res ; 56: e12996, 2023. tab
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1520483

RESUMO

Pain is present in the dental clinic, whether due to oral problems such as dental caries and its complications or related to dental procedures. Pain evaluation in patients with communication difficulties (PCDs) is challenging for dentists, potentially compromising treatment. The aim of this study was to develop and validate an instrument to assess the perception of dentists about pain in PCDs. This study followed a quantitative methodological approach involving constructing and validating an instrument administered to 50 dentists. The initial instrument consisted of 29 items divided into four domains. Content and construct validity and internal consistency were confirmed. Content validation was performed by judges using the Content Validity Index. The instrument underwent construct validation and internal consistency assessments through exploratory factor analysis and confirmatory factor analysis using Cronbach's α, Kaiser-Meyer-Olkin, and Bartlett's sphericity tests. The final instrument consisted of 21 items divided into three domains, with a high Cronbach's α for one domain and moderate values for the others. The total variance accounted for was above 46.03%. Each factor retained at least three items, with factor loadings greater than 0.3, commonalities greater than 0.2, and eigenvalues >1. Despite the study's limitations, the instrument demonstrated its applicability and potential in evaluating the perception and management of pain in PCDs.

19.
Braz J Med Biol Res ; 51(10): e7423, 2018 Jul 26.
Artigo em Inglês | MEDLINE | ID: mdl-30066727

RESUMO

Epithelial cell migration is an essential response to enteric pathogens such as enteropathogenic Escherichia coli (EPEC). This study aimed to investigate the effects of EPEC infection on intestinal epithelial cell migration in vitro, as well as the involvement of type III secretion system (T3SS) and Rho GTPases. Crypt intestinal epithelial cells (IEC-6) were infected with EPEC strains (E2348/69, ΔescF, and the LDI001 strain isolated from a malnourished Brazilian child) and commensal E. coli HS. Wound migration and cell death assays were performed at different time-points. Transcription and expression of Rho GTPases were evaluated using real-time PCR and western blotting. Overall, EPEC E2348/69 reduced migration and increased apoptosis and necrosis levels compared to EPEC LDI001 and E. coli HS strains. Moreover, EPEC LDI001 impaired cell migration at a higher level than E. coli HS and increased necrosis after 24 hours compared to the control group. The different profiles of virulence genes between the two wild-type EPEC strains, characterized by the absence of espL and nleE genes in the LDI001, might explain the phenotypic results, playing significant roles on cell migration impairment and cell death-related events. Moreover, the type III secretion system is determinant for the inhibition of intestinal epithelial cell migration by EPEC 2348/69, as its deletion prevented the effect. Active Rac1 concentrations were increased in E2348/69 and LDI001-infected cells, while the T3SS-deficient strain did not demonstrate this activation. This study contributes with valuable insight to characterize the mechanisms involved in the impairment of intestinal cell migration induced by EPEC.


Assuntos
Movimento Celular/fisiologia , Escherichia coli Enteropatogênica/patogenicidade , Células Epiteliais/microbiologia , Sistemas de Secreção Tipo III/fisiologia , Fatores de Virulência/genética , Proteínas rho de Ligação ao GTP/fisiologia , Apoptose , Western Blotting , Citometria de Fluxo , Humanos , Reação em Cadeia da Polimerase em Tempo Real , Fatores de Virulência/fisiologia
20.
Braz J Med Biol Res ; 40(1): 49-56, 2007 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-17224996

RESUMO

The influence of apolipoprotein E alleles and genotypes on plasma lipid levels was determined in 185 individuals of mixed ethnicity living in Ouro Preto, Brazil. DNA was obtained from blood samples and the genotypes were determined by an RFLP-PCR procedure. The *3 allele was the most frequent (72%), followed by *4 (20%) and *2 (8%); *4 frequency was higher and *2 frequency was lower in the dyslipidemic group than in the normal control group. The *2 carriers presented lower LDL and total cholesterol levels compared to the *3 and *4 carriers. All six expected genotypes were observed in the individuals genotyped: E2/2 (2.1%), E4/4 (2.7%), E2/4 (3.7%), E2/3 (8.0%), E3/3 (53.3%), E3/4 (29.9%); no difference in genotype frequencies was found between the normal and dyslipidemic groups. Compared with *2, the presence of *3 increases more than two times the risk for dyslipidemia (OR = 2.31; P = 0.025; 95% CI = 1.06-5.06) and the presence of *4 increases it three times (OR = 3.31; P = 0.006; 95% CI = 1.36-8.04). The only significant effect of genotype was an increased risk for dyslipidemia in the *4 genotype carriers (E3/4 + E4/4) compared with the *2 genotype carriers (E2/2 + E2/3) with OR = 3.69 (95% CI = 1.25-10.88). The present study indicates that in the Ouro Preto admixed population the presence of APOE *2 can confer a protective effect, whereas the presence of APOE *4 implies an enhanced risk for dyslipidemia.


Assuntos
Apolipoproteínas E/genética , Dislipidemias/genética , Frequência do Gene , Lipídeos/sangue , Polimorfismo Genético , Apolipoproteína E3/genética , Apolipoproteína E4/genética , Índice de Massa Corporal , Brasil/etnologia , Estudos de Casos e Controles , Colesterol/sangue , HDL-Colesterol/sangue , LDL-Colesterol/sangue , Dislipidemias/sangue , Feminino , Genótipo , Humanos , Masculino , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Triglicerídeos/sangue
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