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1.
Support Care Cancer ; 32(7): 458, 2024 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-38916761

RESUMO

PURPOSE: Adherence to oral anticancer treatments (OATs) is a critical issue in metastatic breast cancer (MBC) to enhance survivorship and quality of life. The study is aimed to analyze the main themes and attributes related to OATs in MBC patients. This research is part of a project titled "Enhancing Therapy Adherence Among Metastatic Breast Cancer Patients" designed to produce a predictive model of non-adherence, a decision support system, and guidelines to improve adherence to OATs. METHODS: The study consists of an exploratory observational and qualitative analysis using a focus group method. A semi-structured interview guide was developed to handle relevant OAT themes. Wordcloud plots, network analysis, and sentiment analysis were performed. RESULTS: Nineteen female MBC patients participated in the protocol (age mean 55.95, SD = 6.87). Four main themes emerged: (theme 1) individual clinical pathway; (theme 2) barriers to adherence; (theme 3) resources to adherence; (theme 4) patients' perception of new technologies. The Wordcloud and network analysis highlighted the important role of treatment side effects and the relationship with the clinician in the modulation of adherence behavior. This result is consistent with the sentiment analysis underscoring patients experience fear of issues related to clinical values and ineffective communication and discontinuity of the doctor in charge of the patient care. CONCLUSION: The study highlighted the key role of the individual, relational variables, and side effects as internal and external determinants influencing adherence to MBC. Finally, the opportunity offered by eHealth technology to connect with other patients with similar conditions and share experiences could be a relief for MBC patients.


Assuntos
Antineoplásicos , Neoplasias da Mama , Grupos Focais , Adesão à Medicação , Humanos , Feminino , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Neoplasias da Mama/psicologia , Pessoa de Meia-Idade , Adesão à Medicação/estatística & dados numéricos , Administração Oral , Antineoplásicos/administração & dosagem , Metástase Neoplásica , Idoso , Pesquisa Qualitativa , Qualidade de Vida
2.
Patient Prefer Adherence ; 17: 3461-3473, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38143947

RESUMO

Purpose: An interplay of clinical and psychosocial variables affects breast cancer patients' experiences and clinical trajectories. Several studies investigated the role of socio-demographic, clinical, and psychosocial factors in predicting relevant outcomes in breast cancer care, thus developing predictive models. Our aim is to summarize predictive models for specific psychological and behavioral outcomes: psychological distress, quality of life, and medication adherence. Specifically, we aim to map the determinants of the outcomes of interest, offering a thorough overview of these models. Methods: Databases (PubMed, Scopus, Embase) have been searched to identify studies meeting the inclusion criteria: a breast cancer patients' sample, development/validation of a predictive model for selected psychological/behavioral outcomes (ie, psychological distress, quality of life, and medication adherence), and availability of English full-text. Results: Twenty-one papers describing predictive models for psychological distress, quality of life, and adherence to medication in breast cancer were included. The models were developed using different statistical approaches. It has been shown that treatment-related factors (eg, side-effects, type of surgery or treatment received), socio-demographic (eg, younger age, lower income, and inactive occupational status), clinical (eg, advanced stage of disease, comorbidities, physical symptoms such as fatigue, insomnia, and pain) and psychological variables (eg, anxiety, depression, body image dissatisfaction) might predict poorer outcomes. Conclusion: Predictive models of distress, quality of life, and adherence, although heterogeneous, showed good predictive values, as indicated by the reported performance measures and metrics. Many of the predictors are easily available in patients' health records, whereas others (eg, coping strategies, perceived social support, illness perceptions) might be introduced in routine assessment practices. The possibility to assess such factors is a relevant resource for clinicians and researchers involved in developing and implementing psychological interventions for breast cancer patients.

3.
Ann Oncol ; 33(11): 1119-1133, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-35963481

RESUMO

BACKGROUND: The increased number of cancer survivors and the recognition of physical and psychosocial challenges, present from cancer diagnosis through active treatment and beyond, led to the discipline of cancer survivorship. DESIGN AND METHODS: Herein, we reflected on the different components of survivorship care, existing models and priorities, in order to facilitate the promotion of high-quality European survivorship care and research. RESULTS: We identified five main components of survivorship care: (i) physical effects of cancer and chronic medical conditions; (ii) psychological effects of cancer; (iii) social, work and financial effects of cancer; (iv) surveillance for recurrences and second cancers; and (v) cancer prevention and overall health and well-being promotion. Survivorship care can be delivered by structured care models including but not limited to shared models integrating primary care and oncology services. The choice of the care model to be implemented has to be adapted to local realities. High-quality care should be expedited by the generation of: (i) focused and shared European recommendations, (ii) creation of tools to facilitate implementation of coordinated care and (iii) survivorship educational programs for health care teams and patients. The research agenda should be defined with the participation of health care providers, researchers, policy makers, patients and caregivers. The following patient-centered survivorship research areas were highlighted: (i) generation of a big data platform to collect long-term real-world data in survivors and healthy controls to (a) understand the resources, needs and preferences of patients with cancer, and (b) understand biological determinants of survivorship issues, and (ii) develop innovative effective interventions focused on the main components of survivorship care. CONCLUSIONS: The European Society for Medical Oncology (ESMO) can actively contribute in the efforts of the oncology community toward (a) promoting the development of high-quality survivorship care programs, (b) providing educational material and (c) aiding groundbreaking research by reflecting on priorities and by supporting research networking.


Assuntos
Sobreviventes de Câncer , Neoplasias , Humanos , Sobreviventes de Câncer/psicologia , Europa (Continente) , Oncologia , Neoplasias/terapia , Neoplasias/psicologia , Sobrevivência
4.
Curr Psychol ; 41(1): 437-448, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-33776380

RESUMO

The present study aimed to test a model of relations to ascertain the determinants of distress caused by lockdown for COVID-19. It was hypothesized that the exposure to the COVID-19 increased distress directly and through the mediation of worry, health-related information seeking, and perception of the utility of the lockdown. It was also expected that higher levels of ambiguity intolerance corresponded to higher distress directly and through the mediation of worry, health information seeking behaviors, and perceived utility of the lockdown. Finally, it was expected that risk aversion positively influenced distress directly and through the increasing of worry, health-related information seeking behavior, and more positive perception of the utility of the lockdown The study was conducted in Italy during the mandatory lockdown for COVID-19 pandemic on 240 individuals (age range 18-76). Data recruitment was conducted via snowball sampling. COVID-19 exposure was positively associated with worry and health-related information seeking. Risk-aversion was positively associated with health-related information seeking and perceived utility of the lockdown to contain the spread of the virus. Worry and health-related information seeking were positively associated with distress, whereas the perceived utility of the lockdown was negatively associated with distress. Intolerance for the ambiguity was directly linked to distress with a positive sign. Findings suggest that risk aversion represents both a risk factor and a protective factor, based on what kind of variable mediates the relationship with distress, and that the intolerance to the ambiguity is a risk factor that busters distress.

5.
Breast Cancer Res Treat ; 184(3): 783-795, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-32929568

RESUMO

PURPOSE: The development of the adjuvant therapy requires that clinicians and patients should discuss the magnitude of benefit of treatment for individual patient, estimating the pros and cons and the personal preferences. The aim of the present study was to determine the preferences of women treated with adjuvant hormonal therapy (HT) for breast cancer. METHODS: The analyses were conducted into three different groups of early breast cancer patients to evaluate the survival benefit needed to make treatment worthwhile before starting HT (A), after a few months from the beginning (B) and after several years of HT (C). The questionnaires, showing hypothetical scenarios based on potential survival times and rates without HT, were used to determine the lowest gains women judged necessary to make the treatment worthwhile. RESULTS: A total of 452 patients were included in the study: 149 in group A, 150 in group B and 153 in group C. In group C, 65% of patients were receiving HT with aromatase inhibitors (with or without a LHRH analogue). In the groups A, B, C 8%, 20% and 26%, respectively, received adjuvant chemotherapy. Overall, 355 women (79%) had children. The responses were quite similar between the three groups. A median gain of 10 years was judged necessary to make adjuvant HT worthwhile based on the hypothetical scenario of untreated mean survival time of 5 and 15 years. Median gain of 20% more women surviving was judged necessary to make adjuvant HT worthwhile based on an untreated 5-year survival rate expectation of 60%. Cognitive dysfunction was considered the side effect least compatible with the continuation of treatment in all three groups. CONCLUSIONS: This is a large study of patient preferences on HT. Compared with other studies with similar design, the patients included in the present study required larger benefits to make adjuvant therapy worthwhile.


Assuntos
Neoplasias da Mama , Preferência do Paciente , Antineoplásicos Hormonais/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica , Neoplasias da Mama/tratamento farmacológico , Quimioterapia Adjuvante , Criança , Feminino , Humanos , Taxa de Sobrevida
6.
J Trauma Dissociation ; 21(5): 513-519, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32654633

RESUMO

The heterogeneity of COVID-19 experience and response for each individual is irrefutable; nevertheless, similarities can be observed between countries with respect to people's psychological responses. The main aim of this Commentary is to provide a cultural perspective of the sources of trauma, at the individual and social level, in three different countries: Italy, US and UK. The evidence from previous outbreaks, such as SARS, H1N1 flu, Ebola, and the ongoing Italian, the US, and the UK experience of COVID-19 shows that COVID-19 has introduced not only an individual trauma but also a collective trauma, that researchers should attend to now and in future global emergencies. Future clinical interventions should aim to reconnect dissociated parts both in the individual and in society. This commentary discusses four potential sources of trauma: high-stakes decision fatigue in healthcare professionals, traumatic grief, and bereavement in people who have lost loved ones, loss of roles and identity, and social divisions related to economic shutdown.


Assuntos
COVID-19/epidemiologia , COVID-19/psicologia , Comparação Transcultural , Fadiga Mental/epidemiologia , Fadiga Mental/psicologia , Trauma Psicológico/epidemiologia , Mudança Social , Transtornos de Estresse Pós-Traumáticos/epidemiologia , Luto , Tomada de Decisões , Pesar , Pessoal de Saúde/psicologia , Pessoal de Saúde/estatística & dados numéricos , Humanos , Itália , Fatores de Risco , Papel (figurativo) , Fatores Socioeconômicos , Transtornos de Estresse Pós-Traumáticos/psicologia , Reino Unido , Estados Unidos
7.
Health Qual Life Outcomes ; 18(1): 69, 2020 Mar 13.
Artigo em Inglês | MEDLINE | ID: mdl-32169082

RESUMO

BACKGROUND: A novel approach suggested that cognitive and dispositional features may explain in depth the health behaviors adoption and the adherence to prevention programs. The Health Orientation Scale (HOS) has been extensively used to map the adoption of health and unhealthy behaviors according to cognitive and dispositional features. Coherently, the main aim of the current research was to assess the factor structure of the Italian version of the HOS using exploratory and confirmatory factor analysis and testing the construct validity of the scale by assessing differences in health orientations between tobacco cigarette smokers and nonsmokers. METHOD: The research protocol was organized in two studies. Study 1 evaluated the dimensionality of the HOS in a sample of Northern Italian healthy people. Three hundred and twenty-one participants were enrolled; they were 229 women (71.3%) and 92 men (28.7%). In Study 2, the factor structure and construct validity of the HOS Italian version was assessed trough confirmatory factor analysis using a tobacco cigarette smokers and nonsmokers population. Two hundred and nineteen participants were enrolled; they were 164 women (75.2%) and 55 men (24.8%). RESULTS: In Study 1, a seven factors solution was obtained explaining 60% of cumulative variance instead of 10 factors solution of the original version of the HOS. In Study 2, the factor structure of the Italian version of the HOS was confirmed and applied to the smokers and nonsmokers; nonsmokers reported higher values than smokers in Factor 1 (MHPP) [t (208) = - 2.739 p < .007] (CI 95-4.96% to -.809), Factor 2 (HES) [t (209) = - 3.387 p < .001] (CI 95-3.93% to -. 1.03), Factor 3 (HIC) [t(213) = - 2.468 p < .014] (CI 95-2.56% to -.28) and Factor 7 (HEX) [t(217) = - 3.451 p < .001] (CI 95%- 1.45 to .39). CONCLUSIONS: Results of the Italian adaptation of HOS lead to a partial redistribution of items and confirmed 7 subscales to distinguish psycho-cognitive dispositional dimensions involved in health orientation styles.


Assuntos
Atitude Frente a Saúde , Comportamentos Relacionados com a Saúde , Adulto , Análise Fatorial , Feminino , Humanos , Itália , Masculino , Pessoa de Meia-Idade , não Fumantes/psicologia , Psicometria/métodos , Qualidade de Vida , Reprodutibilidade dos Testes , Fumantes/psicologia
8.
HIV AIDS (Auckl) ; 9: 161-165, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28883743

RESUMO

AIMS: The overall goal of this article is to make a scientific comment about the psycho-social consequences of hemophilia patients affected by human immunodeficiency virus (HIV) and/or hepatitis C virus (HCV) and to point out the related medicolegal issues. METHODS: This commentary takes into account some published evidences about the current scenario of hemophilia patients infected by HIV and/or HCV who received contaminated blood products in the late 1970s through 1985. RESULTS: Several psychological and medicolegal consequences are related with HIV and HCV contamination of blood products. A multidisciplinary approach is needed to treat all the difficulties experienced by these patients and to ensure good clinical decisions in medical practice. CONCLUSION: The literature on the psychosocial functioning of hemophilia patients with human HIV and HCV infection offers a number of implications, including medicolegal issues, that can be discussed for guaranteeing a good level of care and safeguard of this group of patients.

9.
Eur J Cancer Care (Engl) ; 25(6): 936-960, 2016 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26856816

RESUMO

This article provides an analysis of cancer decision aids (DAs), instruments developed to support oncologic patients facing tough screening or treatment decisions, with a particular attention to their level of personalisation. As discussed in our previous works, we argue that the personalisation of medicine should regard not only the genetic and clinical aspects of diseases but also the different cognitive, psychological and social factors involved in clinical choices. According to this vision, we analysed the existing randomised controlled studies on cancer DAs concluding that only few of them take into account individual variables such as cultural level, individual risk attitudes, personal beliefs, and emotional state that are crucial to determine people's reactions and health-related choices. For these reasons, although quality standards have been published for these interventions, we suggest the need for further research in order to make these instruments more efficient in transforming and improving the actual clinical practice, improving patient empowerment and participation in health-related decisions.


Assuntos
Técnicas de Apoio para a Decisão , Neoplasias/terapia , Tomada de Decisões , Feminino , Testes Genéticos , Humanos , Masculino , Neoplasias/genética , Neoplasias/prevenção & controle , Participação do Paciente , Ensaios Clínicos Controlados Aleatórios como Assunto
11.
Support Care Cancer ; 23(12): 3427-35, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25761757

RESUMO

The purpose of this study was to analyze the psychological well-being, quality of life, and cognitive strategies activated by patients with high-grade glioma. We hypothesized that the self-perceived quality of life is modulated by physical and psychological factors and that in order to understand this modulation more psychometric approaches are necessary. Data were collected from a sample of 73 consecutive patients with a histological diagnosis of primary malignant brain cancer (grade IV glioblastoma and grade III anaplastic astrocytoma) hospitalized in a specialized Italian center. The Functional Assessment of Cancer Therapy (FACT) scale and the Schedule of Evaluation of Individual Quality of Life-Direct Weighting (SEIQoL-DW) scale were used to assess quality of life. The mean FACT-Brain (Br) score was 122.37. Similarly, the median SEIQoL-DW score was 72.9 out of a maximum value of 100. No gender effect was found in relation to overall quality of life. Patients with high depression and/or anxiety scores reported lower quality of life (QoL) scores in all the instruments considered. We did not find any gender effect concerning depression and anxiety levels. However, we found that men and women, though having similar physical and functional well-being, reported different QoL determinants, since men seem to rely more on physical adjustment, while women activate more introspective strategies. Positive actions, family issues, negative thoughts, health, and positive thoughts were found to be the most reported themes. In conclusion, the present study strongly suggests that a positive psychological adjustment is possible also in the event of a severe diagnosis and during aggressive treatments, but QoL determinants might be considered too in order to help health professionals to understand patients' experience and to meet their needs.


Assuntos
Neoplasias Encefálicas/psicologia , Cognição/fisiologia , Glioma/psicologia , Qualidade de Vida , Adulto , Neoplasias Encefálicas/epidemiologia , Neoplasias Encefálicas/patologia , Depressão/epidemiologia , Depressão/etiologia , Feminino , Glioma/epidemiologia , Glioma/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Gradação de Tumores , Psicometria , Qualidade de Vida/psicologia , Inquéritos e Questionários
13.
Ecancermedicalscience ; 6: 259, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22837764

RESUMO

In the present medical context, the evaluation and the monitoring of factors other than mere physical symptoms are an urgent demand. In particular, the issue of quality of life (QoL) has become a relevant target in the treatment of cancer. However, the approach towards these aspects is not well standardized and the actual applications in a concrete setting are fragmented, left to personal or local initiative. If this is true for QoL in general, it is particularly relevant in the specific field of nutrition. Indeed, though the growing awareness of a correlation between chronic diseases and dietary habits has led to an increased interest in nutrition, both before and after cancer, very little is still known about the methods that measure this important variable of the QoL. Indeed, good nutrition may have a relevant impact on QoL, positively affecting both the physical and psychological well-being. Targeting this issue implies using proper instruments to both monitor and educate the patients. Hence, we argue that it is vital for oncologists to be able to individuate the best tool available in a specified context, so as to achieve an important goal with little effort, also adopting standardized strategies proved to be efficacious. In this framework, we briefly reviewed the tools more frequently reported in the scientific literature. We suggest that through a cognitive approach, it is possible to achieve important clinical targets, initially by understanding the patients' needs, values, and psychosocial factors involved in nutritional behaviour and food-related decisions, in order to develop a personalized approach. Hence, this is the only way to support concrete actions for promoting healthier diets, thus preventing recurrences, monitoring chronic conditions, and supporting a good QoL.

14.
Cogn Process ; 11(3): 219-26, 2010 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-19727878

RESUMO

The moral sense is among the most complex aspects of the human mind. Despite substantial evidence confirming gender-related neurobiological and behavioral differences, and psychological research suggesting gender specificities in moral development, whether these differences arise from cultural effects or are innate remains unclear. In this study, we investigated the role of gender, education (general education and health education) and religious belief (Catholic and non-Catholic) on moral choices by testing 50 men and 50 women with a moral judgment task. Whereas we found no differences between the two genders in utilitarian responses to non-moral dilemmas and to impersonal moral dilemmas, men gave significantly more utilitarian answers to personal moral (PM) dilemmas (i.e., those courses of action whose endorsement involves highly emotional decisions). Cultural factors such as education and religion had no effect on performance in the moral judgment task. These findings suggest that the cognitive-emotional processes involved in evaluating PM dilemmas differ in men and in women, possibly reflecting differences in the underlying neural mechanisms. Gender-related determinants of moral behavior may partly explain gender differences in real-life involving power management, economic decision-making, leadership and possibly also aggressive and criminal behaviors.


Assuntos
Tomada de Decisões/fisiologia , Julgamento/fisiologia , Princípios Morais , Religião , Caracteres Sexuais , Adulto , Análise de Variância , Escolaridade , Feminino , Humanos , Masculino , Testes Neuropsicológicos , Tempo de Reação , Adulto Jovem
15.
Ecancermedicalscience ; 4: 187, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-22276038

RESUMO

Quality of life (QoL) is an increasingly important outcome measure in medicine. Health, in fact, is not only based on functional status but also on psychological and social well being. Since QoL is related to the patient's perception of their position in life in relation to their goals, expectations, standards and concerns, the way in which the medical context is experienced may be critical. We then hypothesised that self-perceived QoL may be linked to unmet needs in information management and decision involvement. To analyse this hypothesis, we conducted a quantitative study on 84 consecutive patients with a diagnosis of primary high-grade glioma. The functional assessment of cancer therapy-Brain (FACT-Br) scales, the hospital anxiety and depression (HAD) scale and the need evaluation questionnaire (NEQ) questionnaire were used, in order to measure quality-of-life dimension, mood and unmet needs. Patients were classified as having no need (cluster 1), a moderate need (cluster 2) or a high need (cluster 3) to be more involved in the clinical process.Our data confirmed previous studies in other clinical areas, showing that shared decision might contribute to a better adaptation process to the illness [1]. In fact, patients in cluster 1 showed a significant better self-perceived QoL, despite the lack of clinical differences between clusters. The study showed that patients satisfied with respect to decisional involvement seem to be able to better cope with their disease. Finally, the study suggests the need for a more attuned decision-making process in approaching clinical decisions. Physicians need to better understand patient preferences related to information and decision sharing.

16.
Ergonomics ; 50(11): 1931-40, 2007 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-17972210

RESUMO

The nature of work has been changing. It is becoming more and more uncertain, complex, cognitively demanding, disperse in space and in time, and diverse for the people involved. It requires diffuse decision making and responsibility. Knowledge and creative work, instead of industrial, currently occupies the majority of workforce. A recent NIOSH report (2002) claims that the changing nature of work asks for new research, tools and methods for evaluating the impact of its transformations on workers' health and safety. Following this claim, the current paper investigates the process of recovery from fatigue. Since it is known that the quality of recovery may be highly impoverished by the presence of persisting and pervasive mental activity, namely, by mental rumination, the investigation focuses on the possible differential characteristics of rumination among industrial and knowledge workers. The results from a field study shows evidence that industrial and knowledge workers are differentially affected by rumination. It is suggested that rumination can be a promising early indicator of stress in knowledge occupations.


Assuntos
Transtornos Cognitivos/etiologia , Cognição , Fadiga/complicações , Indústrias , Conhecimento , Ocupações , Estresse Psicológico/complicações , Adulto , Idoso , Atenção , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Saúde Ocupacional , Testes Psicológicos , Fatores de Risco , Inquéritos e Questionários , Tempo , Local de Trabalho
17.
J Neuroimmunol ; 127(1-2): 37-43, 2002 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-12044973

RESUMO

We have previously demonstrated that the repeated intracerebroventricular (i.c.v.) microinjection of interleukin-6 (IL-6) prevented the myelinolytic lesions of cobalamin-deficient (Cbl-D) central neuropathy [or subacute combined degeneration (SCD)] in totally gastrectomized (TGX) rats. We therefore hypothesized that cobalamin (Cbl) may actually regulate IL-6 levels in rat cerebrospinal fluid (CSF). We measured IL-6 levels in the CSF of rats made Cbl-D by means of total gastrectomy (TG) or chronic feeding with a Cbl-D diet and killed at different times from the beginning of the experiment, and found that IL-6 levels significantly and progressively decreased over time. Chronic 2-month Cbl administration started 1 week after surgery prevented the decrease in IL-6 levels and, when it was started 2 months after surgery, it significantly increased IL-6 levels, but not to presurgical values. We also investigated whether IL-6 decrease might be ultimately due to the Cbl-deficiency-linked decrease in epidermal growth factor (EGF) synthesis. Repeated i.c.v. administrations of EGF to TGX rats did not modify CSF IL-6 levels. These results, together with those of a previous study showing the preventive effect of IL-6 treatment on SCD lesions, demonstrate that: (i) Cbl selectively regulates CSF IL-6 levels; and (ii) decreased IL-6 availability plays a role in the pathogenesis of the experimental SCD, in which no evidence of inflammatory and/or immunological reaction has been observed.


Assuntos
Interleucina-6/líquido cefalorraquidiano , Vitamina B 12/farmacologia , Animais , Fator de Crescimento Epidérmico/líquido cefalorraquidiano , Fator de Crescimento Epidérmico/farmacologia , Gastrectomia , Injeções Intraventriculares , Injeções Subcutâneas , Leptina/líquido cefalorraquidiano , Masculino , Ratos , Ratos Sprague-Dawley , Deficiência de Vitamina B 12/líquido cefalorraquidiano , Deficiência de Vitamina B 12/imunologia
18.
J Acquir Immune Defic Syndr ; 25(1): 36-43, 2000 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-11064502

RESUMO

UNLABELLED: The aim of this study was to assess the predictive value of HIV RNA levels after 1 month of therapy on the long-term virologic outcome in an unselected general population of HIV-infected patients. DESIGN: Analysis was conducted retrospectively on an ongoing clinical cohort of HIV-positive patients who were receiving antiretroviral treatment. Data on 575 patients were analyzed. RESULTS: The HIV RNA value at 1 month was significantly correlated with the virologic outcome after 12 and 24 months of therapy (R = 0.258 and R = 0.44, respectively). The predictive value of the 1-month viral load was also statistically significant after stratification for baseline CD4 T-cell counts. Prediction was similar in highly compromised patients (CD4 < or = 100 cells/microl; R = 0.426; p = .001) or in patients with a better immunologic status (R = 0.419; p < .0001). It retained validity in patients who were naive or experienced for antiretroviral therapy. CONCLUSION: HIV RNA level after 1 month of therapy is a useful prognostic marker in HIV-infected patients. It predicts long-term virologic and immunologic outcome. A cutoff level of 5000 copies/ml identifies patients most likely to fail current therapy. In these patients, a more aggressive strategy or specific diagnostic interventions to clarify the relative influence of viral resistance and/or subtherapeutic regimens is advised.


Assuntos
Fármacos Anti-HIV/uso terapêutico , Infecções por HIV/tratamento farmacológico , Infecções por HIV/virologia , HIV/isolamento & purificação , RNA Viral/análise , Contagem de Linfócito CD4 , Estudos de Coortes , Quimioterapia Combinada , HIV/genética , Infecções por HIV/diagnóstico , Humanos , Valor Preditivo dos Testes , Prognóstico , Estudos Retrospectivos , Fatores de Tempo , Carga Viral
19.
J Chemother ; 12(3): 195-8, 2000 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-10877512

RESUMO

Killing kinetic experiments were performed with moxifloxacin, a novel fluoroquinolone, vancomycin, clarithromycin, cotrimoxazole, gentamicin, rifampicin and with moxifloxacin in combination with each of the above drugs against six methicillin-resistant Staphylococcus aureus clinical isolates. Half of the strains were ciprofloxacin-resistant. The early bactericidal effect of moxifloxacin alone was substantially greater than that of the other tested drugs. No antagonism was observed between moxifloxacin and each of the other drugs. For each combination the mean decrease in the number of organisms (after 6 hours) was comparable to that achieved with moxifloxacin alone, however, when moxifloxacin was tested with gentamicin, a slight increase in the bactericidal effect was observed.


Assuntos
Anti-Infecciosos/farmacologia , Compostos Aza , Quimioterapia Combinada/farmacologia , Fluoroquinolonas , Resistência a Meticilina , Quinolinas , Staphylococcus aureus/efeitos dos fármacos , Claritromicina/farmacologia , Sinergismo Farmacológico , Gentamicinas/farmacologia , Testes de Sensibilidade Microbiana , Moxifloxacina , Rifampina/farmacologia , Combinação Trimetoprima e Sulfametoxazol/farmacologia , Vancomicina/farmacologia
20.
FASEB J ; 13(14): 2083-90, 1999 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-10544191

RESUMO

We have recently demonstrated that the myelinolytic lesions in the spinal cord (SC) of rats made deficient in vitamin B(12) (cobalamin) (Cbl) through total gastrectomy (TG) are tumor necrosis factor-alpha (TNF-alpha)-mediated. We investigate whether or not permanent Cbl deficiency, induced in the rat either through TG or by chronic feeding of a Cbl-deficient diet, might modify the levels of three physiological neurotrophic factors-epidermal growth factor (EGF), vasoactive intestinal peptide (VIP), and somatostatin (SS)-in the cerebrospinal fluid (CSF) of these rats. We also investigated the ability of the central nervous system (CNS) in these Cbl-deficient rats to synthesize EGF mRNA and of the SC to take up labeled Cbl in vivo. Cbl-deficient rats, however the vitamin deficiency is induced, show a selective decrease in EGF CSF levels and an absence of EGF mRNA in neurons and glia in various CNS areas. In contrast, radiolabeled Cbl is almost exclusively taken up by the SC white matter, but to a much higher degree in totally gastrectomized (TGX) rats. Chronic administration of Cbl to TGX rats restores to normal both the EGF CSF level and EGF mRNA expression in the various CNS areas examined. This in vivo study presents the first evidence that the neurotrophic action of Cbl in the CNS of TGX rats is mediated by stimulation of the EGF synthesis in the CNS itself. It thus appears that Cbl inversely regulates the expression of EGF and TNF-alpha genes in the CNS of TGX rats.


Assuntos
Encéfalo/metabolismo , Fator de Crescimento Epidérmico/fisiologia , Fatores de Crescimento Neural/fisiologia , Medula Espinal/metabolismo , Vitamina B 12/fisiologia , Animais , Autorradiografia , Fator de Crescimento Epidérmico/líquido cefalorraquidiano , Fator de Crescimento Epidérmico/genética , Gastrectomia , Regulação da Expressão Gênica , Masculino , RNA Mensageiro/análise , Ratos , Ratos Sprague-Dawley , Fator de Necrose Tumoral alfa/biossíntese , Fator de Necrose Tumoral alfa/genética , Deficiência de Vitamina B 12/metabolismo
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