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1.
Vet Parasitol Reg Stud Reports ; 20: 100385, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-32448527

RESUMO

Insect Bite Hypersensitivity (IBH) is a common cutaneous disease, affecting a large number of horses worldwide. Several studies have identified Culicoides spp. saliva as a clinically relevant allergen source. The prevalence of IBH in Portugal, particularly in Lusitano horses, is still not known. However, the environmental characteristics of the national territory are favorable to the activity of Culicoides, and several species of this genus can be found, namely C. imicola and C. obsoletus/C. scoticus. In this study we characterized the Culicoides population present in Lusitano stud farms with a history of IBH. Thirteen stud farms with Lusitano horses were selected in several regions of mainland Portugal for having a previous history of IBH-affected horses, with a minimum of 5 affected horses. Culicoides were collected in May and June 2016 using OVI traps, placed in these stud farms, and we were able to identify several Culicoides species. We could also verify that C. obsoletus/C. scoticus, and C. imicola were the ones most frequently found, but other species like C. pulicaris were also found.


Assuntos
Ceratopogonidae/fisiologia , Doenças dos Cavalos/parasitologia , Hipersensibilidade/veterinária , Mordeduras e Picadas de Insetos/veterinária , Animais , Ceratopogonidae/classificação , Fazendas , Feminino , Doenças dos Cavalos/epidemiologia , Cavalos , Hipersensibilidade/epidemiologia , Hipersensibilidade/imunologia , Hipersensibilidade/parasitologia , Incidência , Mordeduras e Picadas de Insetos/epidemiologia , Mordeduras e Picadas de Insetos/parasitologia , Masculino , Portugal/epidemiologia
2.
J Sex Med ; 15(5): 687-697, 2018 05.
Artigo em Inglês | MEDLINE | ID: mdl-29653914

RESUMO

BACKGROUND: Several studies have demonstrated that culture plays a fundamental role in individuals' beliefs, attitudes, and values toward sexuality, and influences their ability to enjoy sex. It follows that culture may influence sexual satisfaction or dissatisfaction. AIM: To examine and compare cognitive-emotional variables related to women's sexual dissatisfaction in Iran and New Zealand. METHODS: In total, 196 Iranian women and 207 New Zealand women participated in the study, answering questionnaires evaluating dysfunctional sexual beliefs, automatic thoughts, emotional and sexual response during sexual activity, as well as sexual satisfaction. OUTCOMES: Sexual beliefs were measured by the Sexual Dysfunctional Beliefs Questionnaire, thoughts and emotional responses were measured by the Sexual Modes Questionnaire, and sexual satisfaction was measured by the Sexual Satisfaction Index. RESULTS: Findings indicated that in both Iranian and New Zealand women, failure and disengagement thoughts, lack of erotic thoughts, and emotions of fear during sexual activity were significant predictors of sexual dissatisfaction. Besides these common predictors, results also indicated that sexual conservatism and women's sexual passivity beliefs, sexual abuse thoughts, and fear during sexual activity were significant predictors of sexual dissatisfaction in Iranian women. Beliefs of sexual desire and pleasure as a sin; age-related beliefs; and emotions such as sadness, disillusion, and hurt were significant predictors of sexual dissatisfaction in New Zealand women. CLINICAL TRANSLATION: The present findings could facilitate a better understanding of cultural differences in the roles played by dysfunctional sexual beliefs, negative automatic thoughts, and negative emotions during sexual activity, and the value of these beliefs, thoughts, and emotions in predicting sexual dissatisfaction. CONCLUSIONS: The strength of this study is in providing an examination of the role of culturally bound beliefs in predicting sexual dissatisfaction in women from different cultural backgrounds. Limitations include the lack of evaluation of psychological and interpersonal variables that may impact on women's sexual dissatisfaction. These findings suggest that there may be a role of culture in shaping beliefs, attitudes, and values toward sexuality; and provide evidence for the effect of cognitive-emotional variables in predicting women's sexual dissatisfaction. Abdolmanafi A, Nobre P, Winter S, et al. Culture and Sexuality: Cognitive-Emotional Determinants of Sexual Dissatisfaction Among Iranian and New Zealand Women. J Sex Med 2018;15:687-697.


Assuntos
Cultura , Emoções , Comportamento Sexual/etnologia , Disfunções Sexuais Psicogênicas/etnologia , Adolescente , Adulto , Idoso , Atitude , Cognição , Medo , Feminino , Humanos , Irã (Geográfico)/epidemiologia , Libido/fisiologia , Pessoa de Meia-Idade , Nova Zelândia/epidemiologia , Orgasmo/fisiologia , Sexualidade/etnologia , Adulto Jovem
3.
Health Promot Int ; 33(3): 468-478, 2018 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-28028011

RESUMO

Evaluation of public health programs, services and policies is increasingly required to demonstrate effectiveness. Funding constraints necessitate that existing programs, services and policies be evaluated and their findings disseminated. Evidence-informed practice and policy is also desirable to maximise investments in public health. Partnerships between public health researchers, service providers and policymakers can help address evaluation knowledge and skills gaps. The Western Australian Sexual Health and Blood-borne Virus Applied Research and Evaluation Network (SiREN) aims to build research and evaluation capacity in the sexual health and blood-borne virus sector in Western Australia (WA). Partners' perspectives of the SiREN model after 2 years were explored. Qualitative written responses from service providers, policymakers and researchers about the SiREN model were analysed thematically. Service providers reported that participation in SiREN prompted them to consider evaluation earlier in the planning process and increased their appreciation of the value of evaluation. Policymakers noted benefits of the model in generating local evidence and highlighting local issues of importance for consideration at a national level. Researchers identified challenges communicating the services available through SiREN and the time investment needed to develop effective collaborative partnerships. Stronger engagement between public health researchers, service providers and policymakers through collaborative partnerships has the potential to improve evidence generation and evidence translation. These outcomes require long-term funding and commitment from all partners to develop and maintain partnerships. Ongoing monitoring and evaluation can ensure the partnership remains responsive to the needs of key stakeholders. The findings are applicable to many sectors.


Assuntos
Fortalecimento Institucional , Colaboração Intersetorial , Avaliação de Programas e Projetos de Saúde , Saúde Pública , Pesquisa , Patógenos Transmitidos pelo Sangue , Política de Saúde , Humanos , Estudos de Casos Organizacionais , Pesquisa Qualitativa , Saúde Sexual , Viremia , Austrália Ocidental
4.
BMC Psychiatry ; 17(1): 111, 2017 03 23.
Artigo em Inglês | MEDLINE | ID: mdl-28335758

RESUMO

BACKGROUND: The prevalence of mental health problems have been found to be higher among university students compared to their non-student peers. Nursing students in particular face a range of additional stressors which may impact their undergraduate performance and their careers. Mental Health First Aid (MHFA) aims to increase mental health literacy and to reduce stigma and may positively impact on the student population. This paper describes a MHFA randomised controlled trial targeting nursing students at a large Australian university. This study aimed to measure the impact of the MHFA course on mental health literacy, mental health first aid intentions, confidence in helping someone with a mental health problem and stigmatising attitudes including social distance. METHODS: Participants were first year nursing students (n = 181) randomly allocated to the intervention (n = 92) or control (n = 89) group. Intervention group participants received the standardised MHFA course for nursing students. Online self-report questionnaires were completed at three time intervals: baseline (one week prior to the intervention: T1) (n = 140), post intervention (T2) (n = 120), and two months post intervention (T3) (n = 109). Measures included demographics, mental health knowledge, recognition of depression, confidence in helping, mental health first aid intentions and stigmatising attitudes including social distance. Repeated measures ANOVA was computed to measure if the impact of time (T1, T2, T3) and group (intervention and control) on the outcome variables. RESULTS: There was a significant improvement among intervention compared to control group participants across the three time periods for knowledge scores (p < 0.001), confidence in helping (p < 0.001), mental health first aid intentions (p < 0.001), total personal stigma (p < 0.05), personal dangerous/unpredictable stigma (p < 0.05) and social distance (p < 0.05) scores. CONCLUSION: MHFA is useful training to embed in university courses and has the potential to enhance mental health literacy and reduce stigmatising attitudes and social distance. While this course has particular salience for nursing and other health science students, there are broader benefits to the general university population that should be considered and opportunities accordingly explored for all students to complete the course. TRIAL REGISTRATION: Australian New Zealand Clinical Trials Registry ACTRN12614000861651 . Retrospectively registered 11 August 2014.


Assuntos
Currículo , Educação em Enfermagem , Primeiros Socorros , Transtornos Mentais/diagnóstico , Transtornos Mentais/enfermagem , Enfermagem Psiquiátrica/educação , Estudantes de Enfermagem/psicologia , Adulto , Atitude do Pessoal de Saúde , Austrália , Escolha da Profissão , Feminino , Humanos , Masculino , Transtornos Mentais/psicologia , Nova Zelândia , Distância Psicológica , Estigma Social , Estresse Psicológico/complicações
5.
J Sex Med ; 12(6): 1415-26, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25963126

RESUMO

INTRODUCTION: Female sexual dysfunction is highly prevalent and reportedly has adverse impacts on quality of life. Although it is prevalent after childbirth, women rarely seek advice or treatment from health care professionals. AIM: The aim of this study was to assess the sexual functioning of Australian women during the first year after childbirth. METHODS: Postpartum women who had given birth during the previous 12 months were invited to participate in this cross-sectional study. A multidimensional online questionnaire was designed for this study. This questionnaire included a background section, the Female Sexual Function Index, the Patient Health Questionnaire (PHQ-8), and the Relationship Assessment Scale. Responses from 325 women were analyzed. RESULTS: Almost two-thirds of women (64.3%) reported that they had experienced sexual dysfunction during the first year after childbirth, and almost three-quarters reported they experienced sexual dissatisfaction (70.5 %). The most prevalent types of sexual dysfunction reported by the affected women were sexual desire disorder (81.2%), orgasmic problems (53.5%), and sexual arousal disorder (52.3%). The following were significant risk factors for sexual dysfunction: fortnightly or less frequent sexual activity, not being the initiator of sexual activity with a partner, late resumption of postnatal sexual activity (at 9 or more weeks), the first 5 months after childbirth, primiparity, depression, and relationship dissatisfaction. CONCLUSION: Sexual satisfaction is important for maintaining quality of life for postpartum women. Health care providers and postpartum women need to be encouraged to include sexual problems in their discussions.


Assuntos
Período Pós-Parto , Comportamento Sexual/estatística & dados numéricos , Disfunções Sexuais Psicogênicas/epidemiologia , Adulto , Austrália/epidemiologia , Estudos Transversais , Parto Obstétrico , Feminino , Humanos , Orgasmo , Satisfação Pessoal , Gravidez , Prevalência , Qualidade de Vida , Fatores de Risco , Comportamento Sexual/psicologia , Disfunções Sexuais Psicogênicas/etiologia , Inquéritos e Questionários , Adulto Jovem
6.
Arch Womens Ment Health ; 18(3): 423-33, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25934058

RESUMO

Sexual function of women can be affected by many factors resulting in female sexual dysfunction (FSD). Sexual dysfunction is a common problem among women of all ages and has negative effects not only on their quality of lives but also on the sexual function and quality of life of their partners. It can also affect mental health of the entire family and society. Regarding the multidimensional nature of female sexual dysfunction and considering its consequences, this condition needs to be recognised in its early stages in order to prevent future consequences and impacts. This article discusses biopsychosocial aspect of female sexual function, classifications and risk factors of female sexual dysfunction and investigates current approaches to identify and treat this problem.


Assuntos
Comportamento Sexual/psicologia , Disfunções Sexuais Fisiológicas/psicologia , Disfunções Sexuais Psicogênicas/psicologia , Feminino , Humanos , Libido , Qualidade de Vida , Fatores Socioeconômicos
7.
BMC Psychiatry ; 15: 26, 2015 Feb 19.
Artigo em Inglês | MEDLINE | ID: mdl-25886615

RESUMO

BACKGROUND: The impact of mental health problems and disorders in Australia is significant. Mental health problems often start early and disproportionately affect young people. Poor adolescent mental health can predict educational achievement at school and educational and occupational attainment in adulthood. Many young people attend higher education and have been found to experience a range of mental health issues. The university setting therefore presents a unique opportunity to trial interventions to reduce the burden of mental health problems. Mental Health First Aid (MHFA) aims to train participants to recognise symptoms of mental health problems and assist an individual who may be experiencing a mental health crisis. Training nursing students in MHFA may increase mental health literacy and decrease stigma in the student population. This paper presents a protocol for a trial to examine the efficacy of the MHFA training for students studying nursing at a large university in Perth, Western Australia. METHODS/DESIGN: This randomised controlled trial will follow the CONSORT guidelines. Participants will be randomly allocated to the intervention group (receiving a MHFA training course comprising two face to face 6.5 hour sessions run over two days during the intervention period) or a waitlisted control group (not receiving MHFA training during the study). The source population will be undergraduate nursing students at a large university located in Perth, Western Australia. Efficacy of the MHFA training will be assessed by following the intention-to-treat principle and repeated measures analysis. DISCUSSION: Given the known burden of mental health disorders among student populations, it is important universities consider effective strategies to address mental health issues. Providing MHFA training to students offers the advantage of increasing mental health literacy, among the student population. Further, students trained in MHFA are likely to utilise these skills in the broader community, when they graduate to the workforce. It is anticipated that this trial will demonstrate the scalability of MHFA in the university environment for pre-service nurses and that implementation of MHFA courses, with comprehensive evaluation, could yield positive improvements in the mental health literacy amongst this target group as well as other tertiary student groups. TRIAL REGISTRATION: Australian New Zealand Clinical Trials Registry ACTRN12614000861651 .


Assuntos
Educação em Enfermagem/métodos , Transtornos Mentais , Saúde Mental/educação , Estudantes de Enfermagem/psicologia , Adolescente , Adulto , Comunicação , Eficiência Organizacional , Feminino , Letramento em Saúde , Comportamento de Ajuda , Humanos , Masculino , Transtornos Mentais/diagnóstico , Transtornos Mentais/prevenção & controle , Transtornos Mentais/psicologia , Projetos de Pesquisa , Estigma Social , Universidades , Austrália Ocidental
8.
Aust J Prim Health ; 21(3): 305-9, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-24851954

RESUMO

Sexual difficulties relating to selective serotonin reuptake inhibitor (SSRI) medication have an impact on quality of life and are a common cause for non-adherence to medication. While most research has focussed on the prevalence and treatment of sexual difficulties, little is known about how patients cope with the adverse sexual effects of SSRIs. This qualitative study, using Interpretive Phenomenological Analysis (IPA), investigated the experiences of 10 Australian women currently coping with the adverse sexual effects ofthis antidepressant by conducting semi-structured interviews. This paper presents one major theme from the study and reports the findings related to women's self-reported experiences of interacting with GPs in their search for answers and validation of their concerns. Findings from the study add to the current literature by providing an insight into how interactions with GPs impact on women's abilities to cope with adverse sexual effects. Empathic discussions and shared decision-making between GPs and women can provide the opportunity to improve the management of the adverse sexual effects of SSRIs and may lead to improved outcomes for women.


Assuntos
Adaptação Psicológica , Libido/efeitos dos fármacos , Relações Médico-Paciente , Inibidores Seletivos de Recaptação de Serotonina/efeitos adversos , Disfunções Sexuais Fisiológicas/induzido quimicamente , Adulto , Austrália , Feminino , Clínicos Gerais , Humanos , Entrevistas como Assunto , Pessoa de Meia-Idade
9.
Psychol Health ; 29(12): 1388-406, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24991877

RESUMO

A growing body of evidence has highlighted the sexual side effects of selective serotonin reuptake inhibitor (SSRI) medication. Whilst most of the research has focused on the prevalence and treatment of sexual difficulties, little is known about how patients cope with the SSRI-related sexual side effects. The objective of this study was to explore women's experiences of coping with the sexual side effects of SSRI medication and interpretative phenomenological analysis was employed for an in-depth exploratory study of a sample of 10 women. Four broad themes emerged which are discussed under the following headings: searching, suffering in silence, trying to resolve and accepting what is. The themes provide an insight into the different strategies used by women to cope with the sexual side effects of SSRI medication and highlight the importance of contextualising these difficulties as part of an overall approach to improve the management and treatment of SSRI-related sexual side effects.


Assuntos
Adaptação Psicológica , Antidepressivos/efeitos adversos , Inibidores Seletivos de Recaptação de Serotonina/efeitos adversos , Comportamento Sexual/efeitos dos fármacos , Adulto , Depressão/tratamento farmacológico , Feminino , Humanos , Pessoa de Meia-Idade , Comportamento Sexual/psicologia
10.
Front Psychol ; 5: 339, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24860521

RESUMO

Accurate assessment of obsessions and compulsions is a crucial step in treatment planning for Obsessive-Compulsive Disorder (OCD). In this clinical case study, we sought to determine if the use of Ecological Momentary Assessment (EMA) could provide additional symptom information beyond that captured during standard assessment of OCD. We studied three adults diagnosed with OCD and compared the number and types of obsessions and compulsions captured using the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) compared to EMA. Following completion of the Y-BOCS interview, participants then recorded their OCD symptoms into a digital voice recorder across a 12-h period in reply to randomly sent mobile phone SMS prompts. The EMA approach yielded a lower number of symptoms of obsessions and compulsions than the Y-BOCS but produced additional types of obsessions and compulsions not previously identified by the Y-BOCS. We conclude that the EMA-OCD procedure may represent a worthy addition to the suite of assessment tools used when working with clients who have OCD. Further research with larger samples is required to strengthen this conclusion.

11.
Res Vet Sci ; 93(2): 1006-14, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22136797

RESUMO

As recurrent airway obstruction (RAO) is progressive and as medical history is frequently unknown by owners, it's important to suggest a score model to characterize RAO stages for a more accurate diagnosis and treatment. The authors correlated clinical (CS), endoscopic (ES), thoracic X-ray (XRS) and bronchoalveolar lavage fluid (BALFS) scores in horses with RAO, in an attempt to establish relevance of each factor's contribution for the characterization of RAO stages and to suggest a staging method. Thirty horses with RAO and ten healthy controls were studied. Pearson correlation coefficients were determined between CS, ES, XRS and BALFS. Only significant correlation coefficients (>0.60) were considered. One way variance analyses were used to compare the two groups. A discriminant analysis model was adjusted on the RAO staging method suggested. There was a significant correlation coefficient between the CS cough, nostril flare and abdominal lift, all the mucus ES (0.61-0.84), the XRS interstitial pattern, bronchial radiopacity and thickening and tracheal thickening (0.67-0.78) and the BALFS neutrophil percentages (0.63-0.84). These variables (e.g., cough) which presented a significant correlation coefficient were considered relevant and chosen for a score model to characterize RAO stages. The ten healthy controls were attributed stage 0 and the 30 RAO horses were attributed stages 1 (4 horses), 2 (7 horses), 3 (10 horses) and 4 (9 horses). There was also a significant correlation coefficient between all the relevant variables and the RAO stage (0.61-0.89). Furthermore, discriminant analysis of the RAO staging method showed 92.5% of original grouped cases and 85.0% of cross-validated grouped cases correctly classified, having confirmed major contribution of the same variables that had significant correlation coefficients. Even though further confirmation by lung functional testing is desirable, the significant correlation between relevant variables and RAO stage and the results of RAO staging discriminant analysis support the suggestion of our score model for the characterization of RAO stages.


Assuntos
Obstrução das Vias Respiratórias/veterinária , Doenças dos Cavalos/patologia , Doença Pulmonar Obstrutiva Crônica/veterinária , Obstrução das Vias Respiratórias/diagnóstico por imagem , Obstrução das Vias Respiratórias/patologia , Animais , Tosse/veterinária , Doenças dos Cavalos/diagnóstico por imagem , Cavalos , Muco , Doença Pulmonar Obstrutiva Crônica/classificação , Doença Pulmonar Obstrutiva Crônica/diagnóstico por imagem , Doença Pulmonar Obstrutiva Crônica/patologia , Radiografia , Testes de Função Respiratória
12.
J Clin Microbiol ; 43(2): 740-4, 2005 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-15695673

RESUMO

The etiological agent most commonly associated with bacillary dysentery is Shigella. As part of its mandate, the Bacteriology and Enteric Disease Program of Health Canada identifies and serotypes unusual isolates of Shigella received from provincial laboratories of public health. In this report, six unusual isolates from three provinces were analyzed biochemically and serologically using slide and tube agglutinations and molecularly using standard pulsed-filed gel electrophoresis (PFGE), PCR, and PCR-restriction fragment length polymorphism (RFLP) techniques. All six isolates were identical. PFGE analysis grouped these strains; biochemically, they were mannitol negative and consistent with the profile of Shigella. Serologically, these strains produced weak reactions in Shigella dysenteriae serovars 4 and 16 and Escherichia coli O159 and O173 antisera. Molecular serotyping by PCR-RFLP of the rfb gene produced an S. dysenteriae serovar 2/E. coli O112ac pattern. They were positive by PCR for ipaH and ial enteroinvasive genes but negative for all other genes tested. Antiserum was prepared from one of the isolates and tested against Shigella and E. coli reference strains as well as the other isolates. The antiserum reacted with the five remaining isolates and showed cross-reactivity with S. dysenteriae serovars 1, 4, and 16; Shigella flexneri type 3; and E. coli O118, O159, O168, O172, and O173 antigens. Absorbing the sera with E. coli O159 and S. dysenteriae serovar 4 antigen removed all cross-reactions and only slightly reduced the homologous titer. Based on biochemical, molecular, and complete serological analysis, we propose that these six isolates represent a new provisional serovar of S. dysenteriae, type strain BEDP 02-5104.


Assuntos
Técnicas de Tipagem Bacteriana , Disenteria Bacilar/epidemiologia , Shigella dysenteriae/classificação , Shigella dysenteriae/isolamento & purificação , Adolescente , Adulto , Alberta/epidemiologia , Animais , Colúmbia Britânica/epidemiologia , Células CHO , Canadá/epidemiologia , Linhagem Celular , Criança , Pré-Escolar , Cricetinae , Disenteria Bacilar/microbiologia , Eletroforese em Gel de Campo Pulsado , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase , Polimorfismo de Fragmento de Restrição , Quebeque/epidemiologia , Sorotipagem , Shigella dysenteriae/genética , Shigella dysenteriae/metabolismo
13.
Diagn Microbiol Infect Dis ; 37(1): 17-23, 2000 May.
Artigo em Inglês | MEDLINE | ID: mdl-10794935

RESUMO

Control of Bordetella pertussis in the community is hampered by slow and insensitive diagnostic tests. We therefore examined the accuracy and cost of culture, direct fluorescent antibody (DFA) staining, and PCR in a routine clinical laboratory. Six hundred thirty seven nasopharyngeal swabs and aspirates in casamino acids transport medium were cultured, stained with polyclonal (Difco), and monoclonal (BL-5 and Accu-Mab) anti-B. pertussis reagents, and amplified by an IS481-specific PCR. PCR products were detected by a hybridization-enzyme immunoassay kit (Gen-eti-k DEIA, DiaSorin), with confirmation by a second PCR in a separate laboratory. Sensitivities and specificities of culture, polyclonal DFA, monoclonal DFA, and PCR were 36 and 100%, 11.4 and 94.6%, 8.3 and 98. 4%, and 95.0 and 99.3%, respectively, with a prevalence of 15.7%. The DFA tests were the most economical, and the PCR cost was 31% higher than culture. This study suggests that with minor improvements in economy, pertussis PCR can be implemented in a clinical laboratory with marked improvement in diagnostic accuracy.


Assuntos
Bordetella pertussis/isolamento & purificação , Técnica Direta de Fluorescência para Anticorpo , Reação em Cadeia da Polimerase/métodos , Bordetella pertussis/genética , Bordetella pertussis/crescimento & desenvolvimento , Bordetella pertussis/imunologia , Custos e Análise de Custo , Técnica Direta de Fluorescência para Anticorpo/economia , Humanos , Laboratórios , Reação em Cadeia da Polimerase/economia , Reprodutibilidade dos Testes , Coloração e Rotulagem/economia , Coloração e Rotulagem/métodos
14.
APMIS ; 108(1): 57-66, 2000 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-10698086

RESUMO

Flow cytometry has proven to be a useful tool for the investigation of cytokine synthesis by selected cell subpopulations. While most reports have used mitogen stimulation or long-term cultures with antigen, we describe here a novel method to allow the detection of rare mycobacterial antigen-specific cytokine synthesizing cells within one day. The most important feature of this method is the use of an FITC-conjugated isotype-matched control antibody to identify and exclude cells which fluoresce non-specifically. With this technique, we demonstrate interferon-gamma (IFN-gamma) staining in 785 cells per 1 x 10(5) T cells counted, in mycobacterial antigen-stimulated peripheral blood mononuclear cells from a BCG-vaccinated subject. In comparison, only 14 IFN-gamma-staining T cells were seen in the cultures not stimulated by mycobacterial antigen. Less than 10 cells per 1 x 10(5) T cells are stained by an irrelevant control antibody. Specific responses are detectable after 12 h of in vitro culture, and peak at 24 h. In volunteer health care workers, IFN-gamma staining correlated with IFN-gamma production using a published ELISPOT assay (r=0.927). IFN-gamma staining was also higher in PBMC from mantoux skin test-positive volunteers, compared to cells from skin test-negative subjects (p=0.0045). Flow cytometry following short-term culture can thus be used for enumeration of antigen-specific IFN-gamma synthesizing cells.


Assuntos
Interferon gama/biossíntese , Mycobacterium/imunologia , Linfócitos T/imunologia , Adulto , Vacina BCG/farmacologia , Feminino , Citometria de Fluxo , Humanos , Técnicas In Vitro , Cinética , Masculino , Pessoa de Meia-Idade , Mycobacterium bovis/imunologia
15.
Artigo em Inglês | MEDLINE | ID: mdl-11465021

RESUMO

We describe a case of the Brown-Vialetto-Van Laere syndrome, which is a rare disorder characterized by progressive pontobulbar palsy associated with sensorineural deafness. More than 30 cases have been reported since the first case was described in 1894. We review the literature of this condition, comparing our case with those reported in the literature and emphasizing important features to improve our understanding of this syndrome.


Assuntos
Paralisia Bulbar Progressiva/diagnóstico , Perda Auditiva Neurossensorial/diagnóstico , Adulto , Humanos , Masculino
17.
Clin Infect Dis ; 18(6): 896-900, 1994 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-8086549

RESUMO

Acinetobacter species are widespread environmental gram-negative coccobacilli that are associated with nosocomial infections; these bacteria are considered to be of relatively low virulence and rarely cause invasive disease. Fifty-two cases of bacteremic episodes due to Acinetobacter species were reviewed, and risk factors and outcomes of these cases were examined. It was noted that these cases belonged to a few clinical groups with markedly different outcomes. Eighteen patients had malignancies (predominantly hematologic), and bacteremia often developed after respiratory infection. Nine patients suffered traumatic injuries and developed bacteremia with Acinetobacter species after endotracheal intubation in the intensive care unit and respiratory colonization. Four burn patients, three of whom had burns covering > or = 50% of their body surface areas, had burn infections prior to bacteremia. While many patients had central venous catheters, in only four cases were the catheters clearly infected prior to the positive blood culture. Prior use of antibiotics was widespread in all groups of patients, and isolates showed high levels of antimicrobial resistance, particularly to beta-lactam agents. The outcome of infection correlated more closely with the type of underlying illness than with other factors such as biovar, polymicrobial bacteremia, or appropriate therapy. Patients with malignancies and burn patients fared poorly (10 of 18 and 2 of 4 patients, respectively, died), while trauma patients and patients with other illnesses did well.


Assuntos
Infecções por Acinetobacter/microbiologia , Acinetobacter , Bacteriemia/microbiologia , Infecções por Acinetobacter/mortalidade , Adulto , Bacteriemia/mortalidade , Infecções Comunitárias Adquiridas/microbiologia , Infecções Comunitárias Adquiridas/mortalidade , Infecção Hospitalar/microbiologia , Infecção Hospitalar/mortalidade , Resistência Microbiana a Medicamentos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Infecções Oportunistas/microbiologia , Infecções Oportunistas/mortalidade , Prognóstico , Fatores de Risco
18.
J Med Virol ; 43(2): 119-24, 1994 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-8083659

RESUMO

The normal immune response after primary varicella-zoster virus (VZV) infection includes IgG subclass evolution to predominantly IgG1-type antibodies, and maturation from low to high avidity antibodies which are maintained for life. Twenty-three healthy and apparently immunocompetent children with a history of 2-5 episodes of chickenpox were studied after repeat disease. Serial sera were tested for VZV-IgG subclass patterns and VZV IgG and G-subclass antibody avidity by urea elution enzyme linked immunoassay (ELISA). Of 11 patients studied within 8 weeks of repeat chickenpox (Early Group), mean antibody avidity was significantly lower (31.3 +/- 26.81) than control (65.1 +/- 12.38) (P < .001). Seven had low avidity antibody (< 30 percent) and an abundance of IgG3 which was a pattern like primary chickenpox, and 2/11 had high avidity antibody characteristic of anamnestic responses. Early Group patients and 12 others studied over 8 weeks after repeat disease (Late Group) showed avidity maturation and attrition of IgG subclass antibodies other than IgG1. At least nine children failed to show VZV-specific secondary (memory) immune responses early in the course of repeat disease. It is possible that failure to maintain or evoke a secondary immune response could explain their susceptibility to repeat chickenpox.


Assuntos
Anticorpos Antivirais/imunologia , Afinidade de Anticorpos/imunologia , Varicela/imunologia , Herpesvirus Humano 3/imunologia , Imunoglobulina G/imunologia , Adolescente , Anticorpos Antivirais/sangue , Varicela/sangue , Criança , Pré-Escolar , Feminino , Humanos , Imunoglobulina G/sangue , Lactente , Masculino , Recidiva , Fatores de Tempo
20.
J Clin Immunol ; 9(4): 362-7, 1989 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-2788659

RESUMO

Precursor and effector cells of recombinant interleukin-2 (r-IL-2)-induced lymphokine-activated killer (LAK) activity were investigated for their expression of VGO1. Peripheral blood lymphocytes (PBL) from normal donors were purified and separated in a FACS 420 into VGO1+- and VGO1- cell fractions before and after culture for 96 hr with 100 U/ml of r-IL-2. Their lytic activity against K 562 and Daudi cells was measured in a 51Cr release assay. The majority, if not all, of the LAK effector and precursor cells was VGO1+ lymphocytes. The expression of VGO1 by LAK precursor cells remained stable under the culture conditions used in our experiments. VGO1- lymphocytes cultured with r-IL-2 demonstrated neither LAK-induced activity nor expression of VGO1 antigen.


Assuntos
Antígenos de Superfície/biossíntese , Interleucina-2/farmacologia , Células Matadoras Naturais/imunologia , Células-Tronco/imunologia , Separação Celular , Radioisótopos de Cromo , Testes Imunológicos de Citotoxicidade , Citometria de Fluxo , Humanos , Técnicas In Vitro , Proteínas Recombinantes/farmacologia
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