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1.
J Public Health (Oxf) ; 40(3): e375-e387, 2018 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-29253218

RESUMO

Background: Psychological therapies are increasingly delivered in community care settings. In existing literature, patient, disorder and service variables are known to have a significant impact on the recovery outcomes for patients undergoing psychological treatment in secondary care. The aim of this review is to establish which predictors have a significant impact on recovery from common mental health disorders in community settings. Methods: A systematic review of the literature was conducted according to PRISMA guidelines to identify variables with a predictive power on psychological therapy outcomes. We searched databases using key words and MeSH terms and a strict scoring system and bias check were used. Results: A total of 486 unique references were identified from the search. Overall, 19 papers met the inclusion criteria. These reported on a total of 34 778 patients from five countries in various community care settings. Predictive factors identified and found to be significant were initial severity and comorbid depression (11/19 studies), which negatively impacted outcome in all studies. Conclusions: We identified key predictors for recovery in a community settings from five countries. The evidence currently available for this setting is limited, so this review serves as a starting point to highlight key factors that warrant further investigation.


Assuntos
Serviços Comunitários de Saúde Mental , Transtornos Mentais/terapia , Psicoterapia , Humanos , Resultado do Tratamento
2.
Mol Hum Reprod ; 21(5): 435-51, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25667199

RESUMO

Epidermal growth factor-like domain 7 (Egfl7) is a gene that encodes a partially secreted protein and whose expression is largely restricted to the endothelia. We recently reported that EGFL7 is also expressed by trophoblast cells in mouse and human placentas. Here, we investigated the molecular pathways that are regulated by EGFL7 in trophoblast cells. Stable EGFL7 overexpression in a Jeg3 human choriocarcinoma cell line resulted in significantly increased cell migration and invasiveness, while cell proliferation was unaffected. Analysis of mitogen-activated protein kinase (MAPK) and phosphatidylinositol 3-kinase (PI3K) pathways showed that EGFL7 promotes Jeg3 cell motility by activating both pathways. We show that EGFL7 activates the epidermal growth factor receptor (EGFR) in Jeg3 cells, resulting in downstream activation of extracellular regulated kinases (ERKs). In addition, we provide evidence that EGFL7-triggered migration of Jeg3 cells involves activation of NOTCH signaling. EGFL7 and NOTCH1 are co-expressed in Jeg3 cells, and blocking of NOTCH activation abrogates enhanced migration of Jeg3 cells overexpressing EGFL7. We also demonstrate that signaling through EGFR and NOTCH converged to mediate EGFL7 effects. Reduction of endogenous EGFL7 expression in Jeg3 cells significantly decreased cell migration. We further confirmed that EGFL7 stimulates cell migration by using primary human first trimester trophoblast (PTB) cells overexpressing EGFL7. In conclusion, our data suggest that in trophoblast cells, EGFL7 regulates cell migration and invasion by activating multiple signaling pathways. Our results provide a possible explanation for the correlation between reduced expression of EGFL7 and inadequate trophoblast invasion observed in placentopathies.


Assuntos
Fatores de Crescimento Endotelial/metabolismo , Fosfatidilinositol 3-Quinase/metabolismo , Receptor Notch1/agonistas , Transdução de Sinais , Trofoblastos/metabolismo , Regulação para Cima , Proteínas de Ligação ao Cálcio , Linhagem Celular Tumoral , Movimento Celular/efeitos dos fármacos , Células Cultivadas , Família de Proteínas EGF , Fatores de Crescimento Endotelial/antagonistas & inibidores , Fatores de Crescimento Endotelial/genética , Inibidores Enzimáticos/farmacologia , Receptores ErbB/agonistas , Receptores ErbB/metabolismo , Feminino , Células HEK293 , Células Endoteliais da Veia Umbilical Humana/citologia , Células Endoteliais da Veia Umbilical Humana/efeitos dos fármacos , Células Endoteliais da Veia Umbilical Humana/metabolismo , Humanos , Sistema de Sinalização das MAP Quinases/efeitos dos fármacos , Inibidores de Fosfoinositídeo-3 Quinase , Placentação/efeitos dos fármacos , Gravidez , Interferência de RNA , Receptor Notch1/antagonistas & inibidores , Receptor Notch1/genética , Receptor Notch1/metabolismo , Proteínas Recombinantes/química , Proteínas Recombinantes/metabolismo , Transdução de Sinais/efeitos dos fármacos , Trofoblastos/citologia , Trofoblastos/efeitos dos fármacos , Regulação para Cima/efeitos dos fármacos
3.
Analyst ; 140(1): 272-9, 2015 Jan 07.
Artigo em Inglês | MEDLINE | ID: mdl-25368873

RESUMO

High Resolution Magic Angle Spinning (HR-MAS) NMR allows metabolic characterization of biopsies. HR-MAS spectra from tissues of most organs show strong lipid contributions that are overlapping metabolite regions, which hamper metabolite estimation. Metabolite quantification and analysis would benefit from a separation of lipids and small metabolites. Generally, a relaxation filter is used to reduce lipid contributions. However, the strong relaxation filter required to eliminate most of the lipids also reduces the signals for small metabolites. The aim of our study was therefore to investigate different diffusion editing techniques in order to employ diffusion differences for separating lipid and small metabolite contributions in the spectra from different organs for unbiased metabonomic analysis. Thus, 1D and 2D diffusion measurements were performed, and pure lipid spectra that were obtained at strong diffusion weighting (DW) were subtracted from those obtained at low DW, which include both small metabolites and lipids. This subtraction yielded almost lipid free small metabolite spectra from muscle tissue. Further improved separation was obtained by combining a 1D diffusion sequence with a T2-filter, with the subtraction method eliminating residual lipids from the spectra. Similar results obtained for biopsies of different organs suggest that this method is applicable in various tissue types. The elimination of lipids from HR-MAS spectra and the resulting less biased assessment of small metabolites have potential to remove ambiguities in the interpretation of metabonomic results. This is demonstrated in a reproducibility study on biopsies from human muscle.


Assuntos
Encéfalo/patologia , Lipídeos/isolamento & purificação , Fígado/patologia , Músculo Esquelético/patologia , Ressonância Magnética Nuclear Biomolecular , Animais , Encéfalo/metabolismo , Difusão , Humanos , Lipídeos/química , Fígado/metabolismo , Músculo Esquelético/metabolismo , Ovinos
4.
Rev Med Suisse ; 11(481): 1421-5, 2015 Jul 15.
Artigo em Francês | MEDLINE | ID: mdl-26398970

RESUMO

A recent study has identified two molecules able to transform white adipose tissue ("bad fat", responsible for excess weight) in brown adipose tissue ("good fat", consuming energy), bringing new hope for the treatment of obesity and diabetes. But the authors' announcement (more humorous than scientific) declaring that the study is thefirst step toward a pill that can replace the treadmill is inappropriate. It underscores the importance of employing preventive methods such as physical activity, whose benefits on health are well documented and which represents the best medicine available. Different means and tools are described in this article in order to improve the amount and quality of physical activity prescription in primary care.


Assuntos
Fármacos Antiobesidade/administração & dosagem , Atividade Motora/fisiologia , Obesidade/tratamento farmacológico , Tecido Adiposo Marrom/fisiologia , Diabetes Mellitus Tipo 2/tratamento farmacológico , Exercício Físico/fisiologia , Terapia por Exercício , Humanos , Obesidade/terapia , Comprimidos
5.
J Reprod Immunol ; 151: 103502, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35255446

RESUMO

Unexplained recurrent pregnancy loss (uRPL) is a clinical condition for which there is a lack of evidenced-based therapies. However, in clinical practice, low molecular weight heparin (LMWH) has been widely used as an empirical therapy since immune effects have been hypothesized in modulating immune tolerance at the fetal-maternal interface. Epigenetic mechanisms are involved in establishing of immune tolerance, at fetal-maternal interface. To investigate potential induced immune-epigenetic changes at maternal periphery level, which could reflect the maternal-fetal interface condition, seems to open up new therapeutical strategies, since microRNAs circulating in maternal plasma and in peripheral blood mononuclear cells (PBMCs) may be specific and sensitive immunological markers/predictors of adverse pregnancy outcomes such as RPL. Our aim in this pilot study is to evaluate potential LMWH effects on genes regulating immunological response key mechanisms related to maternal-fetal tolerance processes, by studying circulating miRNAs in maternal peripheral blood. We tested a panel of selected miRNAs on three groups: 18 healthy pregnant women, 20 pregnant women affected by uRPL, 18 pregnant women affected by uRPL, treated with LMWH. The majority of differentially expressed miRNAs (miR 374a-5p, 19a-3p, 30e-5p, 128-3p, 155-5p and 200c-3p) were found to be modulated by LMWH, which seems to have a positive function in RPL patients, by bringing patients' values back to those comparable to the control ones. Selected microRNA panels would appear to be an effective clinical tool for uRPL diagnosis and management. LMWH-modified miRNA expression levels could be targets for immunotherapy, as LMWH would appear to restore physiological miRNA levels, which are dysregulated in uRPL.


Assuntos
Aborto Habitual , MicroRNAs , Feminino , Heparina de Baixo Peso Molecular/uso terapêutico , Humanos , Leucócitos Mononucleares , MicroRNAs/genética , Projetos Piloto , Gravidez , Resultado da Gravidez
6.
Diabetologia ; 54(5): 1147-56, 2011 May.
Artigo em Inglês | MEDLINE | ID: mdl-21327867

RESUMO

AIMS/HYPOTHESIS: Intramyocellular lipids, including diacylglycerol (DAG) and ceramides, have been linked to insulin resistance. This randomised repeated-measures study examined the effects of diet-induced weight loss (DIWL) and aerobic exercise (EX) on insulin sensitivity and intramyocellular triacylglycerol (IMTG), DAG and ceramide. METHODS: Sixteen overweight to obese adults (BMI 30.6 ± 0.8; 67.2 ± 4.0 years of age) with either impaired fasting glucose, or impaired glucose tolerance completed one of two lifestyle interventions: DIWL (n = 8) or EX (n = 8). Insulin sensitivity was determined using hyperinsulinaemic-euglycaemic clamps. Intramyocellular lipids were measured in muscle biopsies using histochemistry and tandem mass spectrometry. RESULTS: Insulin sensitivity was improved with DIWL (20.6 ± 4.7%) and EX (19.2 ± 12.9%). Body weight and body fat were decreased by both interventions, with greater decreases in DIWL compared with EX. Muscle glycogen, IMTG content and oxidative capacity were all significantly (p < 0.05) decreased with DIWL and increased with EX. There were decreases in DAG with DIWL (-12.4 ± 14.6%) and EX (-40.9 ± 12.0%). Ceramide decreased with EX (-33.7 ± 11.2%), but not with DIWL. Dihydroceramide was decreased with both interventions. Sphingosine was decreased only with EX. Changes in total DAG, total ceramides and other sphingolipids did not correlate with changes in glucose disposal. Stearoyl-coenzyme A desaturase 1 (SCD1) content was decreased with DIWL (-19.5 ± 8.5%, p < 0.05), but increased with EX (19.6 ± 7.4%, p < 0.05). Diacylglycerol acyltransferase 1 (DGAT1) was unchanged with the interventions. CONCLUSIONS/INTERPRETATION: Diet-induced weight loss and exercise training both improved insulin resistance and decreased DAG, while only exercise decreased ceramides, despite the interventions having different effects on IMTG. These alterations may be mediated through differential changes in skeletal muscle capacity for oxidation and triacylglycerol synthesis. TRIAL REGISTRATION: ClinicalTrials.gov NCT00766298.


Assuntos
Ceramidas/metabolismo , Diglicerídeos/metabolismo , Exercício Físico/fisiologia , Resistência à Insulina/fisiologia , Triglicerídeos/metabolismo , Redução de Peso/fisiologia , Idoso , Composição Corporal , Dieta Redutora , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Músculo Esquelético/metabolismo
7.
J Biol Regul Homeost Agents ; 25(4): 615-26, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-22217993

RESUMO

Hirsutism is the development of androgen-dependent terminal body hair in women in places in which terminal hair are normally not found. It is often associated with hyperandrogenemia and/or polycystic ovary syndrome (PCOS), but the existence of uncommom hirsutism forms that are not related to altered androgen plasma levels lead also to the definition of - idiopathic hirsutism. Although the pathophysiology of hirsutism has been linked to increasing 5-alpha reductase (SRD5A) activity and to an alteration of the androgen receptor (AR) transcriptional machinery, many aspects remain unclear. In particular, the relationships between androgens and local factors are poorly understood. In the present paper, we selected for a genital skin biopsy, 8 women affected with severe hirsutism (Ferriman-Gallway score greater than 25) but with normal plasma androgen levels, with the exception of slightly higher serum 3alpha-diol-glucuronide levels, and 6 healthy controls and analyzed their androgen- and insulin-specific transcriptional profile using a specific custom low density microarray (AndroChip 2, GPL9164). We identified the over-expression of the Son of Sevenless-1 (SOS1) gene in all of the hirsute skin fibroblast primary cell cultures compared to control healthy women. Since SOS1 is a guanine nucleotide exchange factor that couples receptor tyrosine kinases to the RAS signaling pathway that controls cell proliferation and differentiation, we further analyzed SOS1 expression, protein level and RAS signaling activation pathway in an in vitro model (NHDF, normal human dermal fibroblast cell line). NHDF treated for 24 h with different concentrations of DHT and T showed an increase in SOS1 levels (both mRNA and protein) and also an activation of the RAS pathway. Our in vivo and in vitro data represent a novel preliminary observation that factors activating SOS1 could act as local proliferative modulators linked to the androgen pathway in the pilosebaceous unit. SOS1 over-expression may play a role in the regulation of the RAS/mitogen-activated protein kinase pathway in the skin, in the hair follicle proliferation and cell cycle, suggesting new perspectives in understanding the pathogenesis of idiopathic hirsutism.


Assuntos
Fibroblastos/metabolismo , Hirsutismo/etiologia , Proteína SOS1/fisiologia , Transdução de Sinais/fisiologia , Proteínas ras/fisiologia , Adulto , Células Cultivadas , Di-Hidrotestosterona/farmacologia , Feminino , Genitália Feminina/citologia , Genitália Feminina/metabolismo , Humanos , Sistema de Sinalização das MAP Quinases , Polimorfismo de Nucleotídeo Único , Regiões Promotoras Genéticas , Reação em Cadeia da Polimerase em Tempo Real , Proteína SOS1/genética , Testosterona/farmacologia
8.
Rev Med Suisse ; 5(202): 1027-31, 2009 May 06.
Artigo em Francês | MEDLINE | ID: mdl-19530535

RESUMO

The advent of antiretroviral therapies represent a major therapeutic progress which dramatically modifies HIV seropositive people's life during the past fifteen years. After the violence of a formerly rapidly fatal disease comes nowadays the heaviness of a chronic disease. If some problems are new for the patients, it also represents new challenges for the caregivers. Due to the lack of access to medications in certain context or because of nonadherence to treatment, the full potential of these therapies is difficult to reach. We present here the experience of a therapeutic patient educational program for HIV seropositive persons. This program aimed not only to develop patient's skills to elicit them to find a balance between their life and their disease, but also to improve the skills of the caregivers to face the problem of chronicity.


Assuntos
Infecções por HIV/prevenção & controle , Infecções por HIV/transmissão , Educação de Pacientes como Assunto , Comportamento de Escolha , Cultura , Humanos , Comportamento Social
9.
Trends Genet ; 15(7): 251-4, 1999 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-10390621

RESUMO

Molecular genetics is contributing to the understanding of normal and abnormal cardiovascular development and morphogenesis. Deletions of chromosome 22q11.2 have been associated with distinct phenotypes that result from a failure to form derivatives of third and fourth branchial arches, including DiGeorge syndrome (DGS) and velo-cardio-facial syndrome (VCFS). The biochemical mechanisms underlying these phenotypes remain undetermined. A recent study provides new insight into the mechanism by which gene deletions produce the DGS and VCFS phenotypes.


Assuntos
Proteínas de Ciclo Celular/genética , Síndrome de DiGeorge/genética , Proteínas/genética , Proteínas Adaptadoras de Transporte Vesicular , Humanos , Peptídeos e Proteínas de Sinalização Intracelular , Modelos Genéticos , Fenótipo , Insuficiência Velofaríngea/genética
10.
Clin Exp Med ; 6(4): 157-65, 2006 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-17191107

RESUMO

Cystic fibrosis (CF) is caused by mutations in the gene encoding the cystic fibrosis conductance transmembrane regulator (CFTR). Symptoms are pancreatic insufficiency, chronic obstructive lung disease, liver disease, chronic sinusitis and infertility in male patients. The phenotypic variability may be explained only in part by the more than 1200 CFTR mutations, which are grouped into six different classes, according to their effect on the protein ranging from a severe (no synthesis or blocked processing) to mild mutation (altered conductance or reduced synthesis). However, it is now accepted that other genes (CF modifiers) influence the phenotypic spectrum of the disease. In order to identify CF modifier genes, we built a low-density home-made oligoarray containing 144 genes selected according to biochemical criteria and evaluated their expression in two CF bronchial epithelial cell lines (CuFi1 F508del/F508del; CuFi3 F508del/R553X). If we consider both cell lines, 38 genes (26.3%) show an altered expression pattern with a threshold > +/-1.5. Of these 38 genes, 12 are altered in CuFi1, and 26 in CuFi3. Some of these genes share the same expression pattern in both cell lines, while others have a different behaviour. These results were validated by a QRT-PCR assay (R2 CuFi1 = 0.81 and R2 CuFi3 = 0.91). These data could suggest that the presence of a class I allele (R553X) determines a more profound alteration of gene expression pattern than the presence of a class II allele (F508del). The identification of the genes altered by a specific CF mutation could lead to the development of a pharmacological approach specific for different CFTR genotypes.


Assuntos
Regulador de Condutância Transmembrana em Fibrose Cística/genética , Fibrose Cística/genética , Células Epiteliais/metabolismo , Perfilação da Expressão Gênica , Mucosa Respiratória/metabolismo , Alelos , Linhagem Celular , Regulação da Expressão Gênica , Humanos , Análise de Sequência com Séries de Oligonucleotídeos , RNA Mensageiro/análise , RNA Mensageiro/genética , Mucosa Respiratória/citologia , Reação em Cadeia da Polimerase Via Transcriptase Reversa/métodos
12.
Biochim Biophys Acta ; 1396(2): 158-62, 1998 Mar 09.
Artigo em Inglês | MEDLINE | ID: mdl-9540831

RESUMO

We report the genomic organization, RNA and protein expression patterns of the gene encoding for the human homolog of the yeast ubiquitin fusion-degradation protein-1 (UFD1L). This enzyme is involved in a ubiquitin-dependent proteolytic pathway (UFD), firstly described in yeast. The human UFD1L gene is organized into 12 exons ranging in size from 33 to 161 bp. Sequence analysis of the 5'-flanking region of the gene revealed a high GC content, multiple CCAAT-binding motifs, CREB, CFT, and AP-2 sites. RNA transcripts were detected in all tissues and cell lines examined, including thymus, thymocytes, T- and B-cells, fibroblasts, chorionic villi, and amniocytes. In Western blot, the UFD1L antibody demonstrated the presence of multiple protein isoforms in all the tested tissues. Expression profile and promoter characteristics suggest UFD1L is a housekeeping gene with implications in the pathogenesis of DiGeorge/velo-cardio-facial syndrome, due to 22q11.2 deletions.


Assuntos
Proteínas/genética , Proteínas Adaptadoras de Transporte Vesicular , Vilosidades Coriônicas/metabolismo , Éxons , Expressão Gênica , Idade Gestacional , Humanos , Peptídeos e Proteínas de Sinalização Intracelular , Íntrons , RNA/metabolismo , Timo/metabolismo , Transcrição Gênica
13.
Rev Med Suisse ; 1(12): 814-7, 2005 Mar 23.
Artigo em Francês | MEDLINE | ID: mdl-15865353

RESUMO

Dieting is a widespread behaviour responding to the public health recommendations. In the setting of weight cycling, this positive health behaviour can have physical and psychological negative consequences. This review of interventions is focused on the psychological consequences of dieting among the obese population. Based on the randomised controlled trials published in the last ten years, it seems that our biggest challenge should be the modification of our programs and the whole mind set regarding the treatment of obesity.


Assuntos
Obesidade/prevenção & controle , Aumento de Peso , Redução de Peso , Terapia Comportamental , Dieta Redutora , Humanos , Obesidade/psicologia
14.
Eur J Hum Genet ; 7(8): 903-9, 1999 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-10602366

RESUMO

Deletions of chromosome 22q11.2 have been associated with distinct phenotypes including DiGeorge syndrome (DGS) and velo-cardio-facial (VCFS) syndrome. These diseases result from a failure to form derivatives of the third and fourth branchial arches during development. DGS/VCFS deletions usually encompass about 3 Mb of genomic DNA in more than 90% of patients. However, deletion mapping studies have failed to demonstrate the existence of a single small region of overlap (SRO) and ruled out any obvious correlation between site or size of deletion and severity of clinical phenotype. We describe three patients carrying 'atypical' deletions presenting the DGS/VCFS phenotype. A comparative analysis of deletions in our patients and those previously published has suggested the existence of five distinct critical regions within the 22q11.2 locus. This observation argues that DGS/VCFS results from haploinsufficiency secondary to a complex and as yet unexplained molecular mechanism, probably involving chromatin effects in mediating gene expression throughout the entire region.


Assuntos
Cromossomos Humanos Par 22 , Síndrome de DiGeorge/genética , Deleção de Genes , Pré-Escolar , Face/anormalidades , Feminino , Cardiopatias Congênitas/genética , Humanos , Hibridização in Situ Fluorescente , Lactente , Deficiência Intelectual/genética , Cariotipagem , Masculino , Fenótipo
15.
Am J Med Genet ; 57(3): 483-8, 1995 Jul 03.
Artigo em Inglês | MEDLINE | ID: mdl-7677156

RESUMO

Atrioventricular canal defects (AVCD) constitute the predominant congenital heart defect in Down syndrome. For this reason, a candidate gene involved in atrioventricular canal development was previously searched and excluded in dominant pedigrees of AVCD, using linkage analysis of polymorphisms from chromosome 21. Because of the striking association between 8p deletion and AVCD, a search for an AVCD gene was carried out in two pedigrees of individuals with autosomal dominant AVCD using a set of DNA markers of the 8pter-->q12 region. These two families include affected individuals and subjects who have transmitted the defect but are not clinically affected. Two-point lod scores were significantly negative for all markers at penetrance levels of 90% and 50%. Multipoint analysis excluded the region covered by the markers LPL-D8S262 and 30 cM to either side of this area. This result corroborates heterogeneity of this heart defect and indicates that the genetic basis of familial AVCD is different from AVCD associated to either trisomy 21 or 8p deletion.


Assuntos
Cromossomos Humanos Par 8 , Genes Dominantes , Cardiopatias Congênitas/genética , Criança , Feminino , Ligação Genética , Marcadores Genéticos , Humanos , Escore Lod , Masculino , Linhagem , Polimorfismo Genético
16.
Am J Med Genet ; 105(6): 529-33, 2001 Aug 08.
Artigo em Inglês | MEDLINE | ID: mdl-11496370

RESUMO

Schizophrenia or schizoaffective disorders are often found in patients affected by DiGeorge/velo-cardio-facial syndrome (DGS/VCFS) as a result of hemizygosity of chromosome 22q11.2. We evaluated the UFD1L gene, mapping within the DGS/VCFS region, as a potential candidate for schizophrenia susceptibility. UFD1L encodes for the ubiquitin fusion degradation 1 protein, which is expressed in the medial telencephalon during mouse development. Using case control, simplex families (trios), and functional studies, we provided evidence for association between schizophrenia and a single nucleotide functional polymorphism, -277A/G, located within the noncoding region upstream the first exon of the UFD1L gene. The results are supportive of UFD1L involvement in the neurodevelopmental origin of schizophrenia and contribute in delineating etiological and pathogenetic mechanism of the schizophrenia subtype related to 22q11.2 deletion syndrome.


Assuntos
Regiões Promotoras Genéticas/genética , Proteínas/genética , Esquizofrenia/genética , Proteínas Adaptadoras de Transporte Vesicular , Adulto , Alelos , Canadá , Linhagem Celular , Estudos de Coortes , DNA/genética , Feminino , Frequência do Gene , Genótipo , Proteínas de Fluorescência Verde , Humanos , Peptídeos e Proteínas de Sinalização Intracelular , Itália , Proteínas Luminescentes/genética , Proteínas Luminescentes/metabolismo , Masculino , Pessoa de Meia-Idade , Polimorfismo Genético , Proteínas Recombinantes de Fusão/genética , Proteínas Recombinantes de Fusão/metabolismo , Esquizofrenia/patologia
17.
Ann Ital Chir ; 68(2): 219-24, 1997.
Artigo em Italiano | MEDLINE | ID: mdl-9290013

RESUMO

We undertook this study to estimate phagocytic killing by neutrophils (PMNs) of Pseudomonas aeruginosa pre-exposed to sub-inhibitory concentration of Amikacin and Imipenem. In particular, we have isolated bacteria from endotracheal aspirates of post-operative patients mechanically ventilated admitted to an ICU with respiratory failure. PMNs were obtained both from these patients (Group A, n. 6) as well as from subjects submitted to surgery with uncomplicated post-operative period (Group B, n. 8). From specimens tested, 6 strains of Pseudomonas aeruginosa were isolated. Results showed that the rate of killing of bacteria treated with Amikacin was no different from that of untreated bacteria, whichever the source of PMNs, either from Group A or Group B patients. On the other hand, the microbicidal effect on P. aeruginosa exposed to Imipenem was significantly enhanced when PMNs were obtained from Group B patients. In the mixture bacteria, Imipenem and PMNs obtained from Group A the rate of killing was low, similar to the controls without antibiotics. Such a finding suggests a possible impairment of PMNs due to the critical disease and in some way responsible for the host adverse interaction between granulocytes, antibiotics and pathogens. The underlying mechanisms remain to be clarified and further studies are required to understand the possible clinical implications.


Assuntos
Amicacina/farmacologia , Antibacterianos/farmacologia , Imipenem/farmacologia , Neutrófilos/efeitos dos fármacos , Fagocitose/efeitos dos fármacos , Infecções por Pseudomonas/tratamento farmacológico , Pseudomonas aeruginosa/efeitos dos fármacos , Infecção da Ferida Cirúrgica/tratamento farmacológico , Tienamicinas/farmacologia , Idoso , Estado Terminal , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Infecções por Pseudomonas/fisiopatologia , Infecção da Ferida Cirúrgica/fisiopatologia , Resultado do Tratamento
18.
Ann Ital Chir ; 69(1): 15-20, 1998.
Artigo em Inglês | MEDLINE | ID: mdl-11995034

RESUMO

In this study we tested for TNF alpha concentrations 45 subjects undergoing elective prostatectomy performed under two different anaesthetic regimens. In addition, given the influence of neuroendocrine axis on immunological homeostasis, we also determined post surgery cortisol and norepinephrine levels. The patients were randomly assigned to one of two groups: group 1 (no. = 24) received NLA general anaesthesia, whereas group 2 (no. = 21) received spinal analgesia. Blood samples were drawn the day before surgery (t0), at two (t1), at 24 (t2), at 48 (t3) and 72 (t4) hours from the completion of operation. In the patients assigned to the general anaesthesia group an increase of circulating TNF alpha was detected through t1 to t4. In the spinal group TNFa values did not change in t1 and t2, whereas enhanced levels of the cytokine--overlapping with those of group 1--were observed at 48 and 72 hrs following surgery. Cortisol response increased in both the groups, peaking at t1 but, at this time patients undergoing spinal anaesthesia were found to have significantly lower circulating cortisol. A rise of plasma norepinephrine was observed at t1 in the general anaesthesia group alone. For the early TNF alpha increase, observed in group 1 only, we hypothesize that anaesthetics, such as NLA agents, may trigger a TNF alpha release in vivo. Alternatively TNF alpha production may represent the result of the neuroendocrine response such as cortisol and norepinephrine, to the surgical/anaesthetic trauma which could be blocked by subarachnoid anaesthesia. Conversely, the late TNF alpha increase found in all the patients studied might be explained by postoperative infections as well as by inflammation of the injured tissues and/or normal wound healing.


Assuntos
Anestesia , Fator de Necrose Tumoral alfa/biossíntese , Adulto , Humanos , Pessoa de Meia-Idade , Período Pós-Operatório , Fatores de Tempo , Fator de Necrose Tumoral alfa/análise
19.
Biomed Res Int ; 2014: 878062, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24719893

RESUMO

Verbascoside (VB) is a bioactive polyphenol from olive oil mill wastewater with known antioxidant activity. Oxidative stress is an emerging problem in assisted reproductive technology (ART). Juvenile ART is a promising topic because, in farm animals, it reduces the generation gap and, in human reproductive medicine, it helps to overcome premature ovarian failure. The aim of this study was to test the effects of VB on the developmental competence of ovine prepubertal oocytes and the bioenergetic/oxidative stress status of fresh and vitrified oocytes. In fresh oocytes, VB exerted prooxidant short-term effects, that is, catalase activity increase and uncoupled increases of mitochondria and reactive oxygen species (ROS) fluorescence signals, and long-term effects, that is, reduced blastocyst formation rate. In vitrified oocytes, VB increased ROS levels. Prooxidant VB effects in ovine prepubertal oocytes could be related to higher VB accumulation, which was found as almost one thousand times higher than that reported in other cell systems in previous studies. Also, long exposure times of oocytes to VB, throughout the duration of in vitro maturation culture, may have contributed to significant increase of oocyte oxidation. Further studies are needed to identify lower concentrations and/or shorter exposure times to figure out VB antioxidant effects in juvenile ARTs.


Assuntos
Glucosídeos/efeitos adversos , Oócitos/metabolismo , Oxidantes/efeitos adversos , Estresse Oxidativo/efeitos dos fármacos , Fenóis/efeitos adversos , Óleos de Plantas , Águas Residuárias , Animais , Anti-Infecciosos/efeitos adversos , Anti-Infecciosos/farmacologia , Feminino , Glucosídeos/farmacologia , Humanos , Mitocôndrias/metabolismo , Mitocôndrias/patologia , Azeite de Oliva , Oócitos/patologia , Oxidantes/farmacologia , Fenóis/farmacologia , Espécies Reativas de Oxigênio/metabolismo , Ovinos
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