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1.
Nutr Neurosci ; 23(8): 591-599, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-30451602

RESUMO

Studies have shown associations between reduced vitamin K status and poor cognitive function. However, despite this apparent link, direct studies measuring cognitive function, vitamin K status and inflammation are lacking. In the current study, The ELDERMET cohort was investigated to identify associations between cognition, vitamin K status and inflammation. The primary aim of the ELDERMET study was to investigate the relationship between gut bacteria, diet, lifestyle and health in 500 older Irish adults. Significant differences in serum phylloquinone, dietary phylloquinone and inflammatory markers were found across varying levels of cognitive function, after controlling for sex, age, body mass index (BMI), triglycerides and blood pressure. In addition, significantly higher levels of dietary phylloquinone were found in those with better cognition compared to those with the poorest function. Higher levels of inflammatory were also associated with poor cognition. Furthermore, both dietary and serum phylloquinone were significant independent predictors of good cognitive function, after controlling for confounders. This study highlights the importance of dietary vitamin K as a potentially protective cognitive factor; it also provides evidence for the correlation between cognition and inflammation. Strategies should be devised by which elderly populations can access rich dietary sources of phylloquinone to maintain cognition.


Assuntos
Cognição , Disfunção Cognitiva/epidemiologia , Dieta , Inflamação/epidemiologia , Estado Nutricional , Vitamina K 1/sangue , Idoso , Idoso de 80 Anos ou mais , Disfunção Cognitiva/sangue , Estudos de Coortes , Feminino , Humanos , Inflamação/fisiopatologia , Mediadores da Inflamação/sangue , Irlanda , Masculino
2.
Ir Med J ; 111(7): 790, 2018 08 13.
Artigo em Inglês | MEDLINE | ID: mdl-30520617

RESUMO

Aims Accurate preoperative knowledge of tumour stage is important in preoperative planning at radical prostatectomy (RP). The aim of this study was to assess the predictive ability of multiparametric MRI for detecting pathological outcomes. Methods A retrospective review was performed of all patients who underwent RP over a 4 year period. Results Preoperative MRI was reported as showing T3 or T4 disease in 26(17.9%) out of 145 patients undergoing RP. Of these, 10(6.9%) had ECE (extra-capsular extension) and 1(0.7%) had SVI (seminal vesicle invasion) on final histology. The sensitivity and specificity of MRI for detecting ECE were 27.3% and 87.6%, respectively. The sensitivity and specificity of MRI for detecting SVI were 11.1% and 97.8%, respectively. The positive predictive values for determining ECE and SVI were 45.5% and 25%, respectively and negative predictive values were 75.9% and 94.4%. Conclusion MRI has good specificity but poor and heterogeneous sensitivity for predicting T3 disease in RP specimen.

3.
Ir Med J ; 110(10): 648, 2017 Dec 18.
Artigo em Inglês | MEDLINE | ID: mdl-29465838

RESUMO

Traditionally, surgery and certain surgical sub-specialities in particular have been predominantly male orientated. In recent years, there has been an increased proportion of female medical graduates which will ultimately have an effect on speciality choices. The aim of this study was to assess the gender diversity among urologists in the UK and Ireland. The total number and gender breakdown of consultant urologists and trainees in the UK and Ireland was obtained from the British Association of Urological Surgeons (BAUS) and the Irish Society of Urology (ISU) membership offices. The total number and gender breakdown of medical school entrants and graduates in 2015 was obtained from the six medical schools in the Republic of Ireland. There are a total of 1,012 consultant urologists in the UK and Ireland. In the UK, 141 (14.6%) are female compared to four (8.2%) in Ireland, p= 0.531. There was a significant increase in the number of females between consultant urologists and trainees in both the UK (p=0.0001) and Ireland (p=0.015). In recent years, there has been a significant change in the percentage of female trainees in the UK and Ireland (22.8% (n=75) in 2011 vs 31.7% (n=93) in 2014, p=0.019. Between the six medical schools in Ireland, there were significantly more female entrants (n=726, 56.5%) than female graduates (n=521, 51.2%) in 2015, p=0.013.There has been a significant shift in gender diversity in urology in the UK and Ireland. Efforts to increase diversity should be pursued to attract further trainees to urology.


Assuntos
Consultores/estatística & dados numéricos , Distribuição por Sexo , Urologistas/estatística & dados numéricos , Urologia/estatística & dados numéricos , Feminino , Humanos , Irlanda , Masculino , Reino Unido
4.
Eur Geriatr Med ; 11(1): 169-177, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-32297234

RESUMO

PURPOSE: The Joint Action Malnutrition in the Elderly (MaNuEL) Knowledge Hub was established to extend scientific knowledge, strengthen evidence-based practice, build a sustainable, transnational network of experts and harmonize research and clinical practice in the field of protein-energy malnutrition in older persons. This paper aims to summarize the main scientific results achieved during the 2-year project and to outline the recommendations derived. METHODS: 22 research groups from seven countries (Austria, France, Germany, Ireland, Spain, The Netherlands and New Zealand) worked together on 6 relevant domains of malnutrition-i.e. prevalence, screening, determinants, treatment, policy measures and education for health care professionals-making use of existing datasets, evidence and expert knowledge. RESULTS: Four systematic reviews, six secondary data analyses of existing cohort and intervention studies, two web-based surveys and one Delphi study were performed. In addition, a scoring system to rate malnutrition screening tools and a theoretical framework on the aetiology of malnutrition in older persons were developed. Based on these activities and taking existing evidence into consideration, 13 clinical practice, 9 research and 4 policy recommendations were developed. The MaNuEL Toolbox was created and made available to effectively distribute and disseminate the MaNuEL results and recommendations. CONCLUSIONS: The MaNuEL Knowledge Hub successfully achieved its aims. Results and recommendations will support researchers, healthcare professionals, policy-makers as well as educational institutes to advance their efforts in tackling the increasing problem of protein-energy malnutrition in the older population.


Assuntos
Desnutrição , Idoso , Idoso de 80 Anos ou mais , Pessoal de Saúde , Humanos , Desnutrição/diagnóstico , Programas de Rastreamento , Prevalência , Inquéritos e Questionários
5.
Clin Nutr ; 38(6): 2477-2498, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-30685297

RESUMO

BACKGROUND & AIMS: Malnutrition in older adults results in significant personal, social, and economic burden. To combat this complex, multifactorial issue, evidence-based knowledge is needed on the modifiable determinants of malnutrition. Systematic reviews of prospective studies are lacking in this area; therefore, the aim of this systematic review was to investigate the modifiable determinants of malnutrition in older adults. METHODS: A systematic approach was taken to conduct this review. Eight databases were searched. Prospective cohort studies with participants of a mean age of 65 years or over were included. Studies were required to measure at least one determinant at baseline and malnutrition as outcome at follow-up. Study quality was assessed using a modified version of the Quality in Prognosis Studies (QUIPS) tool. Pooling of data in a meta-analysis was not possible therefore the findings of each study were synthesized narratively. A descriptive synthesis of studies was used to present results due the heterogeneity of population source and setting, definitions of determinants and outcomes. Consistency of findings was assessed using the schema: strong evidence, moderate evidence, low evidence, and conflicting evidence. RESULTS: Twenty-three studies were included in the final review. Thirty potentially modifiable determinants across seven domains (oral, psychosocial, medication and care, health, physical function, lifestyle, eating) were included. The majority of studies had a high risk of bias and were of a low quality. There is moderate evidence that hospitalisation, eating dependency, poor self-perceived health, poor physical function and poor appetite are determinants of malnutrition. Moderate evidence suggests that chewing difficulties, mouth pain, gum issues co-morbidity, visual and hearing impairments, smoking status, alcohol consumption and physical activity levels, complaints about taste of food and specific nutrient intake are not determinants of malnutrition. There is low evidence that loss of interest in life, access to meals and wheels, and modified texture diets are determinants of malnutrition. Furthermore, there is low evidence that psychological distress, anxiety, loneliness, access to transport and wellbeing, hunger and thirst are not determinants of malnutrition. There appears to be conflicting evidence that dental status, swallowing, cognitive function, depression, residential status, medication intake and/or polypharmacy, constipation, periodontal disease are determinants of malnutrition. CONCLUSION: There are multiple potentially modifiable determinants of malnutrition however strong robust evidence is lacking for the majority of determinants. Better prospective cohort studies are required. With an increasingly ageing population, targeting modifiable factors will be crucial to the effective treatment and prevention of malnutrition.


Assuntos
Desnutrição , Idoso , Idoso de 80 Anos ou mais , Cognição , Exercício Físico , Feminino , Hospitalização , Humanos , Masculino , Desnutrição/epidemiologia , Desnutrição/fisiopatologia , Desnutrição/psicologia , Fatores de Risco
6.
Obes Rev ; 19(12): 1667-1678, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-30160009

RESUMO

Consumption of larger portion sizes is associated with higher energy intake and weight status in children. As parents play a pivotal role in child feeding, we synthesized literature on 'parental portioning practices' using a mixed methods systematic design to inform future strategies addressing portion sizes served to children. Electronic databases PubMed, EMBASE, SCOPUS, PsycINFO and CINAHL Plus were searched. Two reviewers independently screened 385 abstracts and assessed 71 full-text articles against eligibility criteria: studies assessing portioning of foods or beverages by parent(s) with ≥1 child aged 2-12 years. Narrative synthesis of 14 quantitative studies found that portion sizes parents serve vary substantially and are influenced by amounts parents serve themselves, perceived child hunger and parent and child body size. Thematic synthesis of 14 qualitative studies found that parents serve the portion sizes they learn to be appropriate for their child to be fed. Portioning is influenced by parents' desires for a healthy child with a balanced diet. Future guidance on appropriate portion sizes for children would ideally present recommended portion sizes for first serving, incremental with age. Future research is however needed to assess the adoption and efficacy of providing such guidance to families.


Assuntos
Comportamento Alimentar , Alimentos , Poder Familiar , Pais , Tamanho da Porção , Criança , Humanos
7.
Ir J Med Sci ; 187(1): 33-37, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28478609

RESUMO

INTRODUCTION: The aim of this study was to compare the performance of preoperative risk nomograms or detecting lymph node invasion in a cohort of men undergoing radical prostatectomy (RP). METHODS: A retrospective analysis was performed on all men (n = 145) who underwent RP between 2012 and 2015. Preoperative data was inputted to the Memorial Sloan-Kettering Cancer Centre (MSKCC), Partin 2011 and Briganti nomograms and the University of California San Francisco- Centre of the Prostate Risk Assessment tool (UCSF-CAPRA). The risk of lymph node involvement (LNI) was calculated and compared to final histology. RESULTS: One hundred three (71%) men underwent a lymph node dissection at RP. Ten (9.7%) demonstrated LNI. The median nodal yield was 15 nodes, with no difference between those with LNI and those without (19.5 vs 14.5, p = 0.22).No patient classified as low risk on the UCSF-CAPRA score had evidence of LNI. In patients with LNI, no patient breached the 2% threshold for lymph node dissection (LND) on the MSKCC nomogram; four patients breached the 5% threshold on the Partin tables while three patients breached the 2.5% threshold for the Briganti nomogram. CONCLUSION: Nomograms produce useful information regarding risk of disease; however, they often have not been validated on different populations. Risk predictions need to be considered carefully and treatment decisions were made on a patient specific basis.


Assuntos
Excisão de Linfonodo/métodos , Metástase Linfática/diagnóstico , Nomogramas , Prostatectomia/métodos , Neoplasias da Próstata/diagnóstico , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Medição de Risco
8.
Ir J Med Sci ; 186(2): 371-377, 2017 May.
Artigo em Inglês | MEDLINE | ID: mdl-27485350

RESUMO

INTRODUCTION: Bibliometrics is the statistical analysis of written publications. Bibliometric analyses have been performed across a range of biomedical disciplines. The aim of this study was to provide a comprehensive qualitative and quantitative analysis of Irish urology and nephrology research and to analyse how this compares internationally. METHODS: We performed a retrospective bibliometric analysis of the top 20 ranking journals in the field of "Urology and Nephrology" based on their 5 years impact factor, as obtained from the ISI Journal Citation Report database over the 15-year study period, 2000-2015. Utilising the Pubmed database, a search phrase was constructed using country of affiliation, year of publication and journal title. The abstracts of the Irish publications identified were analysed for their institution of origin, article theme and content. RESULTS: A total of 67,740 article abstracts were analysed over the 15 years study period. As anticipated, the USA accounted for the largest number of publications by a country [28,206 (41.64 % of all articles)]. Ireland contributed 347 articles in total (0.51 % of all articles); however, ranking according to population per million was 13th worldwide. Ireland's contribution to urology and nephrology research was highest in the BJUI-British Journal of Urology International [76 articles (21.90 % of Irish total)]. CONCLUSION: We believe this study to be the largest bibliometric analysis in the field of urology and nephrology internationally. This study provides a novel overview of the current Irish urology- and nephrology-related research, and examines how our results compare within the international community.


Assuntos
Pesquisa Biomédica/estatística & dados numéricos , Nefrologia , Publicações/estatística & dados numéricos , Urologia , Bibliometria , Humanos , Irlanda , Fator de Impacto de Revistas , PubMed , Estudos Retrospectivos
9.
Chemosphere ; 144: 1582-8, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26517385

RESUMO

Captive, juvenile, ranch-bred, male mink (Neovison vison) were fed diets containing various concentrations of methyl-mercury (MeHg) and selenium (Se) for a period of 13 weeks and then sacrificed to determine total Hg levels in fur, blood, brain, liver and kidneys and total Se concentrations in brain tissue. As MeHg concentrations in the diet increased, concentrations of total Hg in the tissues also increased with the highest level occurring in the fur > liver = kidney > brain > blood. Concentrations of Hg in the fur were correlated (r(2) > 0.97) with liver, kidney, blood and brain concentrations. The addition of Se to the mink diet did not appear to affect most tissue concentrations of total Hg nor did it affect the partitioning of Hg between the liver:blood, kidney:blood and brain:blood; however, partitioning of Hg between fur and blood was apparently affected.


Assuntos
Dieta , Poluentes Ambientais/metabolismo , Mercúrio/metabolismo , Vison/metabolismo , Selênio/metabolismo , Animais , Transporte Biológico , Masculino , Compostos de Metilmercúrio/metabolismo , Especificidade de Órgãos
10.
J Leukoc Biol ; 65(3): 349-55, 1999 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-10080539

RESUMO

The objective of this study was to quantify, in vivo, constitutive and tumor necrosis factor alpha (TNF-alpha)-enhanced expression of mucosal addressin cell adhesion molecule-1 (MAdCAM-1) in different tissues from healthy wild-type mice (C57BL/6) as well as interleukin-10 (IL-10)-deficient mice with and without active colitis. Using the dual radiolabel monoclonal antibody technique, we found substantial constitutive expression of MAdCAM-1 in the intestine, colon, and mesenteric lymph nodes. MAdCAM-1 expression in these tissues was significantly enhanced, in a time-dependent manner, by systemic administration of TNF-alpha. Maximum surface expression was observed at 18 h after TNF-alpha administration and remained significantly elevated at 48 h post-TNF-alpha injection. No significant constitutive nor TNF-alpha-induced expression of MAdCAM-1 was detected in skeletal muscle, brain, or heart. In IL-10-deficient (IL-10 k/o) mice with no clinical or histological evidence of colitis, constitutive and TNF-alpha-induced expression of MAdCAM-1 in the intestine, cecum, and colon was not different from those values obtained with healthy wild-type controls. IL-10-deficient mice with active colitis exhibited a four- to fivefold greater expression of MAdCAM-1 in the cecum and colon compared with their healthy controls or to IL-10 k/o mice with no evidence of colitis. Taken together, these data demonstrate that TNF-alpha enhances surface expression of MAdCAM-1 in intestinal and colonic tissues to the same extent in both wild-type and IL-10 k/o mice with no colonic inflammation, whereas IL-10 k/o mice with active colitis exhibited a profound up-regulation of MAdCAM-1 in the colon.


Assuntos
Colite/metabolismo , Imunoglobulinas/biossíntese , Interleucina-10/deficiência , Mucoproteínas/biossíntese , Doença Aguda , Animais , Adesão Celular , Moléculas de Adesão Celular , Doença Crônica , Colite/patologia , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Receptores de Retorno de Linfócitos/metabolismo , Fator de Necrose Tumoral alfa/farmacologia
11.
Interdiscip Top Gerontol ; 40: 141-54, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25341519

RESUMO

With modern medicine and an awareness of healthy lifestyle practices, people are living longer and generally healthier lives than their ancestors. These successes of modern medicine have resulted in an increasing proportion of elderly in society. Research groups around the world have investigated the contribution of gut microbial communities to human health and well-being. It was established that the microbiota composition of the human gut is modulated by lifestyle factors, especially diet. The microbiota composition and function, acting in concert with direct and indirect effects of habitual diet, is of great importance in remaining healthy and active. This is not a new concept, but until now the scale of the potential microbiota contribution was not appreciated. There are an estimated ten times more bacteria in an individual than human cells. The bacterial population is relatively stable in adults, but the age-related changes that occur later in life can have a negative impact on host health. This loss of the adult-associated microbiota correlates with measures of markers of inflammation, frailty, co-morbidity and nutritional status. This effect may be greater than that of diet or in some cases genetics alone. Collectively, the recent studies show the importance of the microbiota and associated metabolites in healthy aging and the importance of diet in its modulation.


Assuntos
Envelhecimento/fisiologia , Dieta , Comportamento Alimentar , Trato Gastrointestinal/microbiologia , Microbiota , Adulto , Idoso , Saúde , Humanos
12.
J Histochem Cytochem ; 33(5): 465-73, 1985 May.
Artigo em Inglês | MEDLINE | ID: mdl-2580883

RESUMO

The effect of preliminary trypsinization on the immunoreactivity of keratin proteins in formalin-fixed, paraffin-embedded tissues of a variety of tumors (squamous cell carcinomas, adenocarcinomas, mesotheliomas, and transitional cell carcinomas) was evaluated. Three types of trypsin (Type II and Type IX porcine trypsin and Type III bovine trypsin) and varying concentrations of trypsin were assessed. Immunoreactivity of keratin proteins was determined using rabbit anti-keratin antibodies and monoclonal antibodies (combination of AE1 and AE3) and immunoperoxidase techniques. Preliminary trypsinization was mandatory for optimal immunoreactivity of keratin proteins using either polyclonal or monoclonal antibodies. Excellent results were obtained using Type II porcine trypsin at concentrations of 25 mg/dl for 30-45 min or 50 mg/dl for 20 min, at 37 degrees C. Trypsin treatment with excessive concentrations of enzyme and/or extended incubation times promoted tissue digestion and in some cases, yielded decreased immunoreactivity and altered staining patterns.


Assuntos
Anticorpos Monoclonais , Técnicas Imunoenzimáticas , Queratinas/análise , Proteínas de Neoplasias/análise , Coloração e Rotulagem/métodos , Tripsina , Adenocarcinoma/metabolismo , Adenocarcinoma/patologia , Animais , Carcinoma de Células Escamosas/metabolismo , Carcinoma de Células Escamosas/patologia , Carcinoma de Células de Transição/metabolismo , Carcinoma de Células de Transição/patologia , Bovinos , Feminino , Fixadores , Formaldeído , Humanos , Mesotelioma/metabolismo , Mesotelioma/patologia , Proteínas de Neoplasias/metabolismo , Parafina , Suínos
13.
Pediatrics ; 82(3): 355-63, 1988 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-3261418

RESUMO

Three children with acquired immunodeficiency syndrome and primary lymphoma of the CNS are described. All three children had clinical signs of focal mass lesions and progressive neurologic deficits. In one child the deterioration was extremely rapid. New lesions appeared on serial CT scans every few days, simulating an infectious process and leading to death within 3 weeks. Results of neuroradiologic studies in these patients demonstrated multicentric lesions that were often periventricular. On CT scans, the lesions were hyperdense before contrast and were enhanced with contrast medium. Double-dose delayed contrast CT scans and magnetic resonance imaging studies were more sensitive in indicating additional lesions. Histologically, all three tumors were B cell neoplasms; two lymphomas were large cell type, whereas one was small cell, noncleaved (Burkitt-like). Primary CNS lymphoma occurred with an incidence of 1/26 (4%) in our autopsy series and 3/100 (3%) of all pediatric cases of human immunodeficiency virus-type 1 infection, living and dead, that have been seen at the Children's Hospital of New Jersey. By comparison, opportunistic and reactivated latent CNS infections were less common in this same population and never appeared clinically as mass lesions. Therefore, in our experience, primary lymphoma is the most common cause of focal or multifocal mass lesions in the brains of children with acquired immunodeficiency syndrome. This tumor may be radiosensitive. In most cases, early biopsy is probably necessary to establish the diagnosis.


Assuntos
Síndrome da Imunodeficiência Adquirida/complicações , Neoplasias Encefálicas/complicações , Linfoma/complicações , Linfócitos B/análise , Encéfalo/diagnóstico por imagem , Encéfalo/patologia , Neoplasias Encefálicas/diagnóstico , Neoplasias Encefálicas/patologia , Criança , Pré-Escolar , Feminino , Humanos , Linfoma/diagnóstico , Linfoma/patologia , Imageamento por Ressonância Magnética , Masculino , Tomografia Computadorizada por Raios X
14.
Pediatrics ; 78(4): 678-87, 1986 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-2429248

RESUMO

This report describes the neurologic manifestations of 36 children with human immunodeficiency virus (HIV) infection. In this cohort, in 16 of 21 children with acquired immunodeficiency syndrome (AIDS), three of 12 children with AIDS-related complex, and one of three asymptomatic seropositive children, a progressive encephalopathy developed. Neurologic signs were often detected early but tended to worsen coincident with progression of the immunodeficiency. The presence of progressive encephalopathy correlated with the absence of serum neutralizing antibodies to HIV and with a poor, usually fatal, outcome. The incubation period from initial HIV infection in the perinatal period to the onset of progressive encephalopathy varied from 2 months to 5 years. Intrablood-brain barrier synthesis of HIV-specific antibodies was demonstrated in eight of 14 children with AIDS and AIDS-related complex, indicating active brain infection with HIV. In three cases this was unassociated with progressive neurologic signs. Unique neuropathologic findings in children who died with HIV infection further suggest that the progressive encephalopathy is the result of primary and persistent infection of the brain with this retrovirus. These findings broaden the spectrum of HIV infection in children and have important implications for the development of antiviral therapy.


Assuntos
Síndrome da Imunodeficiência Adquirida/complicações , Encefalopatias/etiologia , Síndrome da Imunodeficiência Adquirida/imunologia , Anticorpos Antivirais/análise , Encefalopatias/diagnóstico por imagem , Encefalopatias/patologia , Líquido Cefalorraquidiano/análise , Criança , Pré-Escolar , Deficiências do Desenvolvimento/etiologia , Feminino , Seguimentos , Anticorpos Anti-HIV , Humanos , Lactente , Masculino , Prognóstico , Tomografia Computadorizada por Raios X
15.
Pediatrics ; 82(6): 919-24, 1988 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-2903481

RESUMO

In a longitudinal study, human immunodeficiency virus type 1 (HIV-1) antigen (HIV-Ag) was measured in serum specimens from 54 children with HIV-1 infection followed for a median duration of 17 months. The persistent detection of free HIV-Ag in a group of 25 children was associated with clinical deterioration in 22 (88%) and a mortality of 52%, whereas the persistent nondetection of free HIV-Ag in a group of 18 children was associated with clinical deterioration in five (28%) and a mortality of 11% during the period of observation. Nine children had transient HIV-1 antigenemia and two children converted from HIV-Ag negative to positive during the study. Free HIV-Ag levels varied inversely with antibody reactivity to viral core proteins p24 and p17 determined by Western immunoblot, suggesting either the formation of immune complexes or a balance between viral expression and the host immune response. Five mother-infant pairs were studied for HIV-Ag expression in the perinatal period. In three of these pairs, both mother and infant were HIV-Ag negative, in one pair the mother had high levels of HIV-Ag and the infant was HIV-Ag negative. In the remaining mother-infant pair, the neonate became HIV-Ag positive but the mother was HIV-Ag negative prepartum and postpartum. These data suggest that HIV-Ag probably does not cross the placenta and that the detection of free HIV-Ag in the offspring of a HIV-1 infected mother most likely indicates viral infection.(ABSTRACT TRUNCATED AT 250 WORDS)


Assuntos
Antígenos de Deltaretrovirus/análise , Infecções por HTLV-I/sangue , Western Blotting , Criança , Pré-Escolar , Infecções por HTLV-I/imunologia , Humanos , Imunoensaio , Lactente , Recém-Nascido , Estudos Longitudinais , Prognóstico
16.
Chest ; 96(2): 406-13, 1989 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-2752824

RESUMO

Six children died of acquired immunodeficiency syndrome (AIDS), four of them females, ages 7 months, 13 months, 2 years 8 months, and 4 years; and two of them males, aged 2 1/2 and 7 years. They were born to IV drug-addicted parents. The conduction system (CS) and the entire heart were studied by serial section. In all cases the heart was hypertrophied and enlarged; one had total thrombotic occlusion of the right coronary artery with extensive infarction of the ventricular septum. Vascular changes also were found in all hearts, involving small arteries, arterioles, and venules. In the arteries, they involved the intima, media, and adventitia, and perivascular areas in a degenerative and inflammatory process. The elastic tissue was especially affected. A nonspecific myocarditis was present in four cases and epicarditis in all. Changes in the summit of the ventricular septum were present in four cases, consisting of increased fibrosis and arteriolosclerosis. The CS changes varied in location, showing either vasculitis, myocarditis, or fragmentation of the bundle with lobulation and fibrosis. The changes in the conduction system were not as severe as the changes in the surrounding myocardium. In one case the ECG was abnormal, showing left hemiblock. This corresponded to the finding of fibrosis, vacuolization of cells, and space formation in the left bundle branch.


Assuntos
Síndrome da Imunodeficiência Adquirida/patologia , Sistema de Condução Cardíaco/patologia , Cardiopatias/patologia , Miocárdio/patologia , Síndrome da Imunodeficiência Adquirida/complicações , Criança , Pré-Escolar , Feminino , Cardiopatias/complicações , Humanos , Lactente , Masculino
17.
Pediatr Infect Dis J ; 13(5): 440-8, 1994 May.
Artigo em Inglês | MEDLINE | ID: mdl-7999149

RESUMO

Essentially all new cases of human immunodeficiency virus (HIV) infection in infants and young children occur as a consequence of exposure to HIV either in utero, intrapartum or postpartum during breast feeding. Currently it is estimated that the majority of vertical transmission of HIV occurs at or near the time of birth. Based on what is known about the biology of perinatal HIV transmission, the HIV burden of the mother, effectiveness of her immune response and that of her fetus/infant and the integrity of the placental "barrier" are likely to play important roles in this process. The role of impaired immunologic control of HIV is gaining recognition as a potential key element in the pathophysiology of perinatal HIV transmission. In most studies to date, advanced maternal disease and low CD4 lymphocyte count have been associated with increased risk of vertical HIV transmission. In addition some studies have indicated that low maternal titers of antibodies to certain V3 loop epitopes may have a similar effect on vertical transmission. Cellular immune responses, which are known to play an important role in host defense against HIV, appear to be impaired in infants after exposure to HIV, especially those responses involving the development of cytotoxic lymphocytes. Mounting evidence suggests that enhancement of humoral and/or cellular immune responses in pregnant women and exposed infants is a logical and potentially feasible approach to interruption of perinatal transmission (an approach similar to that utilized for perinatally acquired hepatitis B virus infection). Studies are now in progress to assess HIV hyperimmune globulin and envelope HIV vaccines in pregnant woman and HIV-exposed infants.


Assuntos
Infecções por HIV/prevenção & controle , Infecções por HIV/transmissão , Complicações Infecciosas na Gravidez , Vacinas contra a AIDS/imunologia , Citocinas/uso terapêutico , Feminino , Humanos , Imunização Passiva , Imunoglobulinas Intravenosas/uso terapêutico , Recém-Nascido , Gravidez , Zidovudina/uso terapêutico
18.
Am J Clin Pathol ; 85(3): 269-77, 1986 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-2428237

RESUMO

Epithelial membrane antigen and keratin proteins represent markers of epithelial differentiation that may be detected in routine formalin-fixed, paraffin-embedded tissues. Eighty-seven neoplasms, including 48 adenocarcinomas of various types, squamous and transitional cell carcinomas, small-cell anaplastic carcinomas, carcinoid tumors, mesotheliomas, hepatomas, melanomas (metastatic), adrenal cortical carcinomas, germ cell tumors, and extramammary Paget's disease, were assessed to determine the relative effectiveness of these antigens as tumor markers. Immunoperoxidase studies were performed using monoclonal antibodies to epithelial membrane antigen and monoclonal (combined AE1 and AE3) and polyclonal (bovine muzzle keratins) antibodies to keratin proteins. In more than half the cases (50/87%), both markers yielded comparable results. However, in 29 cases (33%), keratin proteins were clearly superior to epithelial membrane antigen as a tumor cell marker. Particular discrepancies were apparent for some gastrointestinal adenocarcinomas, squamous cell carcinomas, hepatomas (hepatocellular type), spindle cell components of mesotheliomas, and carcinoid tumors. Epithelial membrane antigen represented a better marker in eight cases (9%), mainly for small-cell anaplastic carcinomas and some renal cell and pulmonary adenocarcinomas. Adrenal cortical carcinomas, melanomas, and seminomas were nonimmunoreactive for both antigens. Epithelial membrane antigen and keratin proteins represent useful complementary markers in diagnostic surgical pathology.


Assuntos
Antígenos de Neoplasias/análise , Antígenos de Superfície/análise , Queratinas/análise , Proteínas de Membrana/análise , Neoplasias/diagnóstico , Anticorpos Monoclonais , Carcinoma/diagnóstico , Humanos , Técnicas Imunoenzimáticas , Queratinas/imunologia , Linfoma/diagnóstico , Proteínas de Membrana/imunologia , Mucina-1 , Neoplasias/imunologia , Neoplasias/patologia
19.
Aviat Space Environ Med ; 65(11): 992-8, 1994 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-7840752

RESUMO

A flight trial was conducted in Cyprus to assess the thermal strain associated with and the G protection provided by the prototype Eurofighter 2000 aircrew equipment assembly (AEA) in a warm climate. Six subjects flew a standardized sortie four times in a Hawk aircraft: two while wearing the Eurofighter 2000 AEA and two wearing standard Hawk summer AEA. The sortie included high-G turns and simulated air combat. Cockpit temperatures, rectal and skin temperatures, heart rate, and sweat rate were recorded. Subjective thermal comfort, fatigue, and G protection were also assessed. Skin temperatures of the back, chest and thighs, mean skin temperatures, and sweat rate were greater when the Eurofighter AEA was worn. Rectal temperature and heart rate did not differ significantly between the two conditions. Superior G protection was provided by the Eurofighter assembly. These findings suggest that wearing the Eurofighter AEA in a warm climate is associated with an increased but not unacceptable level of thermal stress while offering enhanced G protection. These results may not generalize when ambient temperatures are higher or more insulative protective clothing is worn.


Assuntos
Gravitação , Trajes Gravitacionais , Temperatura Alta , Militares , Estresse Fisiológico/etiologia , Adulto , Medicina Aeroespacial , Temperatura Corporal , Clima , Frequência Cardíaca , Humanos , Pessoa de Meia-Idade , Suor/metabolismo , Visão Ocular
20.
Res Social Adm Pharm ; 10(6): 885-895, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24485754

RESUMO

BACKGROUND: Changes in the UK community pharmacy profession including new contractual frameworks, expansion of services, and increasing levels of workload have prompted concerns about rising levels of workplace stress and overload. This has implications for pharmacist health and well-being and the occurrence of errors that pose a risk to patient safety. Despite these concerns being voiced in the profession, few studies have explored work stress in the community pharmacy context. OBJECTIVES: To investigate work-related stress among UK community pharmacists and to explore its relationships with pharmacists' psychological and physical well-being, and the occurrence of self-reported dispensing errors and detection of prescribing errors. METHOD: A cross-sectional postal survey of a random sample of practicing community pharmacists (n = 903) used ASSET (A Shortened Stress Evaluation Tool) and questions relating to self-reported involvement in errors. Stress data were compared to general working population norms, and regressed on well-being and self-reported errors. RESULTS: Analysis of the data revealed that pharmacists reported significantly higher levels of workplace stressors than the general working population, with concerns about work-life balance, the nature of the job, and work relationships being the most influential on health and well-being. Despite this, pharmacists were not found to report worse health than the general working population. Self-reported error involvement was linked to both high dispensing volume and being troubled by perceived overload (dispensing errors), and resources and communication (detection of prescribing errors). CONCLUSIONS: This study contributes to the literature by benchmarking community pharmacists' health and well-being, and investigating sources of stress using a quantitative approach. A further important contribution to the literature is the identification of a quantitative link between high workload and self-reported dispensing errors.


Assuntos
Erros de Medicação/estatística & dados numéricos , Farmácias/estatística & dados numéricos , Farmacêuticos/psicologia , Estresse Psicológico , Carga de Trabalho/psicologia , Adulto , Inglaterra , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos e Questionários
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