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1.
Pharmacol Res Perspect ; 12(1): e1167, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38193611

RESUMO

Off-label use (OLU) is quite common in oncology due to the complexity of cancer and the time-consuming regulatory process. However, outcomes of OLU in cancer treatment remain unclear. This study aimed to evaluate the overall survival (OS), event-free survival (EFS), duration of treatment (DOT), and reason for treatment discontinuation in patients receiving immune checkpoint inhibitors (ICI) as OLU for solid tumors from 2011 to 2020. The study collected data on 356 episodes (353 patients), with a median age of 64.4 years, 36.2% women, and 14.6% ECOG ≥ 2. Median OS was 15.7 (11.9-18.7) months, and median EFS was 5.4 (3.8-6.6) months. Men, patients with metastatic disease or ECOG-PS higher than 1, had worse survival outcomes. The findings derived from this study provide valuable information regarding the real-world use of ICI-OLU and contributes to enhancing the decision-making process for individuals with cancer. Further research on immunotherapy outcomes of OLU in cancer is needed.


Assuntos
Inibidores de Checkpoint Imunológico , Neoplasias , Masculino , Humanos , Feminino , Pessoa de Meia-Idade , Inibidores de Checkpoint Imunológico/uso terapêutico , Uso Off-Label , Neoplasias/tratamento farmacológico , Oncologia , Resultado do Tratamento
2.
Cornea ; 42(12): 1578-1581, 2023 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-37643461

RESUMO

PURPOSE: The aim of this study was to report a case of ocular Mpox that responded favorably to treatment with topical interferon and oral doxycycline. METHODS: This is a case report of a previously healthy 24-year-old woman who developed a pustular rash, headache, fever, arthralgia, sore throat, and asthenia 3 weeks before attending to our clinic. Her main complaint at the moment of the visit was pain, photophobia, foreign body sensation, blurred vision, red eye, and discharge on the left eye. The slit-lamp examination of the left eye showed severe conjunctival hyperemia associated with tarsal follicles, 360 degrees ciliary injection, diffuse corneal epithelial edema with white linear epithelial infiltrates, pigmented and nonpigmented keratic precipitates, and two 1-mm peripheral corneal ulcers with white infiltrates, associated with positive fluorescein staining. Anterior chamber cellularity and flare were mildly present. RESULTS: Mpox with ocular manifestations diagnosis was confirmed by real-time quantitative reverse transcription polymerase chain reaction assay (qRT-PCR) testing; samples were taken from corneal, conjunctival, and nasopharynx swab as well as a skin scab. Topical interferon alpha 2b 1 MIU/mL every 6 hours for 1 month and oral doxycycline 100 mg BID were administered along with other medications with consequent decrease of inflammation and malaise symptoms 1 week later, associated with uncorrected visual acuity improvement. CONCLUSIONS: Alternative and efficacious treatment options for Mpox ocular manifestations are needed to prevent further disease progression and sequelae in countries with no access to the gold-standard therapy. Topical interferon alpha 2b and oral doxycycline have shown adequate response as shown with this patient.


Assuntos
Mpox , Humanos , Feminino , Adulto Jovem , Adulto , Doxiciclina , Administração Tópica , Interferon alfa-2 , Interferon-alfa
3.
Cancer Med ; 12(16): 17112-17125, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-37496404

RESUMO

PURPOSE: Medicines in special situations (MSS) refer to off-label or to unlicensed drugs under investigation (compassionate use). Our objectives were to evaluate characteristics and to estimate overall survival (OS), event-free survival (EFS), and the duration of treatment (DT) of MSS used for cancer treatment at a multicentre comprehensive cancer institution. METHODS: Retrospective cohort study on adult cancer patients for whom an MSS treatment was requested (January 2011-December 2020). A descriptive analysis was performed and median OS and EFS and 95% confidence intervals (CIs) were estimated. Survival curves were stratified by type of tumor, ECOG (Eastern Cooperative Oncology Group) performance status (PS), age, sex, treatment stage and type of drug (mechanism of action and target). RESULTS: Treatment was initiated in 2092 episodes (1930 patients) out of 2377 MSS episodes (2189 patients) requested, 33% for hematological treatment and 87% for advanced stage cancer. Median OS (months) was 21.1 (95% CI 19.4-22.7), median EFS was 5.6 (95% CI 5.1-6.0) months, and median DT was 4.5 [0.0; 115.3] months. OS and EFS statistically significantly favored female patients, ECOG PS ≥2 episodes showed worse OS and EFS outcomes (p < 0.0001). Statistically significant differences in survival were found within solid and hematological cancer, disease stage, drug mechanism of action, and type of cancer (p < 0.001) but not for age. Survival outcomes by tumor subtype and drug are presented both globally and separately based on disease stage. CONCLUSION: MSS uses are practiced across almost all cancer types, mostly for advanced disease. ECOG PS ≥2, along with advanced disease, was related to worse survival. Information about real-world outcomes is valuable and contributes to better decision-making regarding MSS and our experience in this field could be of interest for other colleagues.


Assuntos
Ensaios de Uso Compassivo , Neoplasias , Adulto , Humanos , Feminino , Estudos Retrospectivos , Uso Off-Label , Neoplasias/tratamento farmacológico , Resultado do Tratamento
4.
Biomolecules ; 12(2)2022 02 03.
Artigo em Inglês | MEDLINE | ID: mdl-35204750

RESUMO

Alzheimer's disease (AD) incidence is increasing worldwide at an alarming rate. Considering this increase, prevention efforts, stemming from scientific research, health education, and public policies, are critical. Clinical studies evidenced that healthy lifestyles along with natural multitarget and disease-modifying agents have a preventative impact on AD or mitigate symptoms in diagnosed patients. The pathological alterations of AD start 30 years before symptoms, and it is essential to develop the capacity to detect those changes. In this regard, molecular biomarkers that detect early pathological manifestations are helpful. Based on markers data, early preventive interventions could reduce more than 40% of AD cases. Protective actions include exercise, shown to induce neurogenesis, cognitive stimulation, intellectual-social activity, and nutrition among others. Mediterranean diet, preprobiotics, and nutraceuticals containing bioactive molecules with antioxidant and anti-inflammatory properties are relevant. Antiprotein aggregation molecules whose mechanisms were described are important. Anti-inflammatory agents with anti-aggregation properties that help to control cognitive impairment, include quercetin, biocurcumin, rosemarinic acid, and Andean shilajit. Anthocyanidins, e.g., delphinidin, malvidin, and natural flavonoids, are also included. Quercetin and hydroxy-tyrosol are antiaging molecules and could have anti-AD properties. We emphasize the relevance of nutraceuticals as a main actor in the prevention and/or control of dementia and particularly AD.


Assuntos
Doença de Alzheimer , Disfunção Cognitiva , Dieta Mediterrânea , Doença de Alzheimer/diagnóstico , Doença de Alzheimer/tratamento farmacológico , Doença de Alzheimer/prevenção & controle , Antioxidantes/farmacologia , Suplementos Nutricionais , Humanos
5.
Psychol Trauma ; 14(S1): S50-S62, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-34881944

RESUMO

OBJECTIVE: Child maltreatment (CM) is a widespread problem associated with poor mental and physical health outcomes. The underlying mechanisms of this link are not always well understood, however certain biological changes observed in maltreated individuals may play a role in connecting experience and outcome. This review specifically focuses on 2 markers of biological embedding, DNA methylation (DNAm) and telomere length (TL) in maltreated children and youth. As biomarker changes are not uniform among maltreated children, we additionally discuss biological and environmental resilience factors that may contribute to variability. METHOD: We conducted a systematic review of Medline, Embase and PsycINFO databases for studies examining DNAm and/or TL in maltreated children and youth. Methodological quality of the included studies was assessed using the Scottish Intercollegiate Guidelines Network (SIGN) checklists for cohort studies and randomized control trials. Data extraction focused on various factors including population and CM (type, chronicity, severity, and duration) characteristics. RESULTS: The initial search returned 1,688 nonduplicate results, with 417 full text articles reviewed. Twenty-six articles from 16 studies were ultimately included of which 8 examined telomere length and 18 examined DNA methylation. CONCLUSIONS: While some heterogeneity of findings was found, evidence supports differential changes in both biomarkers associated with CM. This review enhances understanding of the constellation of biological changes related to CM and consideration of the important role of resilience factors in mitigating risk. Elucidating these factors may highlight targets for future study and intervention development. (PsycInfo Database Record (c) 2022 APA, all rights reserved).


Assuntos
Maus-Tratos Infantis , Família , Adolescente , Biomarcadores , Criança , Metilação de DNA , Humanos , Fatores de Proteção
6.
J Environ Manage ; 287: 112203, 2021 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-33735674

RESUMO

Considering low-cost and effective fecal sludge (FS) treatment alternatives is essential to avoid risk to human health and to ensure safe disposal in landfills and soils. This research assesses optimal pH adjustment of two techniques for sanitizing de-watered FS from a septic sewage-treatment plant. The preliminary analysis evaluated the efficiency of lactic acid fermentation (LAF) by two lactic acid strains: Lactobacillus casei and Lactobacillus acidophilus. The homofermentative strain was chosen to evaluate three supplementary sugars: smashed carrot, sugarcane-derived molasses, and anhydrous dextrose. Lime treatment was examined using two materials, CaO, 105% calcium carbonate equivalent (CCE), and Ca(OH)2, 75% CCE. Four samples were retrieved from a passive thermal drying bed, two characterized by its available nutrient content; all samples were analyzed for the pathogenic profile, and total coliforms (TC) were selected as indicators. For LAF, an inoculating rate of Lactobacillus casei 10 g/100 g sludge was found effective in decreasing the pH below 4.0 after 30 days of fermentation, using 22% w/w dextrose/septage and 20% w/w molasses/septage, where molasses contains 20.7% of soluble sugars. In the case of lime treatment, the pH was fitted by a power-law relationship to the rate of lime applied in a septage with an initial pH lower than 7.0. A Langmuir type equation fitted better the liming of two septages with initial pHs above 7.0. The rate of lime CaO 10% w/w was observed to increase the pH above critical value, 12, after 1 h and 24 h. Analysis confirmed the total elimination of TC in samples with pH < 4.0 and pH > 12, contrasting the respective controls. Rates of CaO considering the initial pH of the FS are recommended in order to reach pH 12. Septage sanitization can be completed using either CaO or lactic acid fermentation with molasses; selecting the ideal method will rely on cost-benefit analysis. Sanitization can be considered as well to improve safety soil nutrient recycling practices.


Assuntos
Citrus aurantiifolia , Ácido Láctico , Fermentação , Humanos , Melaço , Esgotos
7.
Child Abuse Negl ; 109: 104764, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-33038722

RESUMO

BACKGROUND: Research on child maltreatment is imperative to inform evidence-based prevention and intervention efforts. Nonetheless, researchers continue to face barriers due to the perceived sensitivity and possibility of harm when asking about these experiences. While studies have started to explore reactions to participating in research on sensitive topics, there are notable limitations and fewer have focused on child maltreatment. OBJECTIVE: The objective of this study was to better understand adult respondents' identification of, and reactions to, potentially upsetting questions in the context of a well-being and experiences survey, with a focus on child maltreatment. METHODS: Data were from the first wave of the Well-Being and Experiences Study in Manitoba, Canada: a computerized self-reported community-based survey of adolescents and their parents/caregivers administered individually at a research facility. The current study focused on parents/caregivers' responses (N = 1000). The study utilized a mixed methods approach with descriptive statistics and qualitative thematic analyses of open-ended responses of their perceptions of upsetting questions. RESULTS: Overall, few respondents (15.1 %) identified any questions as upsetting. Ten themes emerged in respondents' recall of upsetting questions, including maltreatment and other themes often perceived as less sensitive. Only 4% identified maltreatment-related questions as upsetting. Among those who identified any questions or maltreatment-specific questions as upsetting, most felt they were important to ask and should not be removed (92.7 %-97.5 %). These findings suggest that retrospective survey questions about experiences of child maltreatment involving adult samples are not associated with major upset and should be included in future health and social surveys.


Assuntos
Cuidadores/psicologia , Maus-Tratos Infantis/psicologia , Pais/psicologia , Adolescente , Adulto , Cuidadores/estatística & dados numéricos , Maus-Tratos Infantis/estatística & dados numéricos , Emoções , Feminino , Humanos , Renda , Masculino , Manitoba , Cura Mental/psicologia , Pessoa de Meia-Idade , Prevalência , Estudos Retrospectivos , Inquéritos e Questionários
8.
J Alzheimers Dis ; 77(1): 33-51, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32651325

RESUMO

One of the major challenges of medical sciences has been finding a reliable compound for the pharmacological treatment of Alzheimer's disease (AD). As most of the drugs directed to a variety of targets have failed in finding a medical solution, natural products from Ayurvedic medicine or nutraceutical compounds emerge as a viable preventive therapeutics' pathway. Considering that AD is a multifactorial disease, nutraceutical compounds offer the advantage of a multitarget approach, tagging different molecular sites in the human brain, as compared with the single-target activity of most of the drugs used for AD treatment. We review in-depth important medicinal plants that have been already investigated for therapeutic uses against AD, focusing on a diversity of pharmacological actions. These targets include inhibition of acetylcholinesterase, ß-amyloid senile plaques, oxidation products, inflammatory pathways, specific brain receptors, etc., and pharmacological actions so diverse as anti-inflammatory, memory enhancement, nootropic effects, glutamate excitotoxicity, anti-depressants, and antioxidants. In addition, we also discuss the activity of nutraceutical compounds and phytopharmaceuticals formulae, mainly directed to tau protein aggregates mechanisms of action. These include compounds such as curcumin, resveratrol, epigallocatechin-3-gallate, morin, delphinidins, quercetin, luteolin, oleocanthal, and meganatural-az and other phytochemicals such as huperzine A, limonoids, azaphilones, and aged garlic extract. Finally, we revise the nutraceutical formulae BrainUp-10 composed of Andean shilajit and B-complex vitamins, with memory enhancement activity and the control of neuropsychiatric distress in AD patients. This integrated view on nutraceutical opens a new pathway for future investigations and clinical trials that are likely to render some results based on medical evidence.


Assuntos
Doença de Alzheimer/dietoterapia , Doença de Alzheimer/prevenção & controle , Suplementos Nutricionais , Compostos Fitoquímicos/uso terapêutico , Doença de Alzheimer/metabolismo , Animais , Antioxidantes/farmacologia , Antioxidantes/uso terapêutico , Humanos , Emaranhados Neurofibrilares/efeitos dos fármacos , Emaranhados Neurofibrilares/metabolismo , Compostos Fitoquímicos/farmacologia , Resultado do Tratamento
9.
Hum Resour Health ; 17(1): 67, 2019 08 15.
Artigo em Inglês | MEDLINE | ID: mdl-31416444

RESUMO

BACKGROUND: Family medicine (FM) residents choose among a range of options as they enter practice, including practice model, clinical domains, settings, and populations. The choices they make have implications for primary care workforce planning and may differ between FM residents who are parents and those who are not, as well as between male and female FM residents. We investigate whether parenthood shapes intentions among FM residents entering practice and whether the effect of parenthood differs between male and female FM residents. METHODS: We conducted cross-sectional analysis of national survey data collected from FM residents in Canadian residency programs by the College of Family Physicians of Canada between 2014 and 2017. The survey captures information on intentions for comprehensive or focused practice, practice model, clinical domains, practice setting, and populations. We used chi-square tests and multivariable logistic regression to investigate the relationships between parenthood, gender, and practice intentions, adjusting for other physician personal characteristics. RESULTS: Almost a quarter of FM residents were parents or became parents during residency. Intentions for the provision comprehensive care were higher among parents, and intentions for clinically focused practice were lower. Differences in intentions for practice models, domains, and settings/population were primarily by gender, though in several cases the effects of parenthood differed between female and male FM residents. Even during residency, the effects of parenthood differ between male and female residents: while three quarters of male parents finish residency in two years, fewer than half of female parents do. CONCLUSIONS: Both parenthood and gender independently shape practice intentions, but the effect of parenthood differs for male and female FM residents. Supporting FM residents who are parents may positively impact the quality and availability of primary care services, especially since parents are more likely to report intentions to provide  comprehensive care soon after entering practice.


Assuntos
Atitude do Pessoal de Saúde , Escolha da Profissão , Medicina de Família e Comunidade/educação , Poder Familiar/psicologia , Médicos de Família/psicologia , Adulto , Canadá , Estudos Transversais , Feminino , Humanos , Internato e Residência , Masculino , Fatores Sexuais , Inquéritos e Questionários
10.
J Enzyme Inhib Med Chem ; 33(1): 936-944, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-29734888

RESUMO

UHPLC/ESI/MS identification of organic compounds is the first step in the majority of screening techniques for the characterization of biologically active metabolites in natural sources. This paper describes a method for the fast identification and characterisation of secondary metabolites in Leptocarpha rivularis DC. (Palo negro) extracts by HPLC/UV (DAD)-Mass Spectrometry (HPLC/MS). The plant is used for the treatment of several diseases since pre-hispanic Mapuche times. Thirty-seven compounds were detected in the aqueous edible extract for the first time including 4 sesquiterpenes, 10 flavonoids, 9 oxylipins, 2 organic acids, and 11 phenolic acids. In addition, phenolic content antioxidant and cholinesterase inhibitory activities were measured for the first time using the edible infusion. The total polyphenol content of the infusion was 230.76 ± 2.5 mmol GAE/kg dry weight, while the antioxidant activity was 176.51 ± 28.84; 195.28 ± 4.83; and 223.92 ± 2.95 mmol TE/kg dry weight, for the DPPH, ABTS, and FRAP assays, respectively. The cholinesterase inhibitory activity was 7.38 ± 0.03 and 5.74 ± 0.06 mmol GALAE/kg, for the inhibition of acetylcholinesterase AChE and BChE, respectively, showing that this plant is a candidate for the isolation of compounds that can be useful for the treatment of neurodegenerative diseases. Furthermore, this plant could serve also as a raw material for the production of dietary supplements, due to its content of polyphenolic compounds.


Assuntos
Antioxidantes/farmacologia , Asteraceae/química , Produtos Biológicos/farmacologia , Compostos de Bifenilo/antagonistas & inibidores , Inibidores da Colinesterase/farmacologia , Picratos/antagonistas & inibidores , Acetilcolinesterase/metabolismo , Antioxidantes/química , Antioxidantes/isolamento & purificação , Produtos Biológicos/química , Produtos Biológicos/isolamento & purificação , Butirilcolinesterase/metabolismo , Inibidores da Colinesterase/química , Inibidores da Colinesterase/isolamento & purificação , Cromatografia Líquida de Alta Pressão , Relação Dose-Resposta a Droga , Flavonoides/química , Flavonoides/isolamento & purificação , Flavonoides/farmacologia , Hidroxibenzoatos/química , Hidroxibenzoatos/isolamento & purificação , Hidroxibenzoatos/farmacologia , Estrutura Molecular , Oxilipinas/química , Oxilipinas/isolamento & purificação , Oxilipinas/farmacologia , Sesquiterpenos/química , Sesquiterpenos/isolamento & purificação , Sesquiterpenos/farmacologia , Espectrometria de Massas por Ionização por Electrospray , Relação Estrutura-Atividade
11.
J Neurochem ; 144(1): 50-57, 2018 01.
Artigo em Inglês | MEDLINE | ID: mdl-29023772

RESUMO

l-Cysteine is an endogenous sulfur-containing amino acid with multiple and varied roles in the central nervous system, including neuroprotection and the maintenance of the redox balance. However, it was also suggested as an excitotoxic agent implicated in the pathogenesis of neurological disorders such as Parkinson's and Alzheimer's disease. l-Cysteine can modulate the activity of ionic channels, including voltage-gated calcium channels and glutamatergic NMDA receptors, whereas its effects on GABAergic neurotransmission had not been studied before. In the present work, we analyzed the effects of l-cysteine on responses mediated by homomeric GABAA ρ1 receptors, which are known for mediating tonic γ-aminobutyric acid (GABA) responses in retinal neurons. GABAA ρ1 receptors were expressed in Xenopus laevis oocytes and GABA-evoked chloride currents recorded by two-electrode voltage-clamp in the presence or absence of l-cysteine. l-Cysteine antagonized GABAA ρ1 receptor-mediated responses; inhibition was dose-dependent, reversible, voltage independent, and susceptible to GABA concentration. Concentration-response curves for GABA were shifted to the right in the presence of l-cysteine without a substantial change in the maximal response. l-Cysteine inhibition was insensitive to chemical protection of the sulfhydryl groups of the ρ1 subunits by the irreversible alkylating agent N-ethyl maleimide. Our results suggest that redox modulation is not involved during l-cysteine actions and that l-cysteine might be acting as a competitive antagonist of the GABAA ρ1 receptors.


Assuntos
Cisteína/farmacologia , Antagonistas de Receptores de GABA-A/farmacologia , Receptores de GABA-A/efeitos dos fármacos , Animais , Ligação Competitiva , Cloretos/metabolismo , Cistina/farmacologia , Relação Dose-Resposta a Droga , Etilmaleimida/farmacologia , Homocisteína/farmacologia , Humanos , Transporte de Íons/efeitos dos fármacos , Oócitos , Técnicas de Patch-Clamp , RNA Complementar/genética , Receptores de GABA-A/fisiologia , Proteínas Recombinantes/metabolismo , Xenopus laevis , Ácido gama-Aminobutírico/farmacologia
12.
J Bone Miner Res ; 32(1): 135-142, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-27447366

RESUMO

We have recently identified a significant deterioration of bone microarchitecture in premenopausal women with newly diagnosed celiac disease (CD) using high-resolution peripheral quantitative computed tomography (HRpQCT). The aim of this work was to assess changes in bone microarchitecture after 1 year on a gluten-free diet (GFD) in a cohort of premenopausal women. We prospectively enrolled 31 consecutive females at diagnosis of CD; 26 of them were reassessed 1 year after GFD. They all underwent HRpQCT scans of distal radius and tibia, areal BMD by DXA, and biochemical tests (bone-specific parameters and CD serology) at both time points. Secondary, we compared 1-year results with those of a control group of healthy premenopausal women of similar age and BMI in order to assess whether the microarchitectural parameters of treated CD patients had reached the values expected for their age. Compared with baseline, the trabecular compartment in the distal radius and tibia improved significantly (trabecular density, trabecular/bone volume fraction [BV/TV] [p < 0.0001], and trabecular thickness [p = 0.0004]). Trabecular number remained stable in both regions. Cortical density increased only in the tibia (p = 0.0004). Cortical thickness decreased significantly in both sites (radius: p = 0.03; tibia: p = 0.05). DXA increased in all regions (lumbar spine [LS], p = 0.01; femoral neck [FN], p = 0.009; ultradistal [UD] radius, p = 0.001). Most parameters continued to be significantly lower than those of healthy controls. This prospective HRpQCT study showed that most trabecular parameters altered at CD diagnosis improved significantly by specific treatment (GFD) and calcium and vitamin D supplementation. However, there were still significant differences with a control group of women of similar age and BMI. In the prospective follow-up of this group of patients we expect to be able to assess whether bone microarchitecture attains levels expected for their age. © 2016 American Society for Bone and Mineral Research.


Assuntos
Osso e Ossos/patologia , Doença Celíaca/dietoterapia , Doença Celíaca/patologia , Dieta Livre de Glúten , Absorciometria de Fóton , Adulto , Densidade Óssea , Osso e Ossos/diagnóstico por imagem , Cálcio/metabolismo , Estudos de Casos e Controles , Demografia , Suplementos Nutricionais , Feminino , Humanos , Estudos Longitudinais , Pessoa de Meia-Idade , Cooperação do Paciente , Estudos Prospectivos , Tomografia Computadorizada por Raios X , Vitamina D/uso terapêutico , Adulto Jovem
13.
VozAndes ; 28(1): 39-44, 2017.
Artigo em Espanhol | LILACS | ID: biblio-986899

RESUMO

La ataxia espinocerebelosa tipo 2 (SCA2) es una enfermedad neurodegenerativa causada por la expansión del trinucleótido CAG en el exón 1 del gen Ataxina-2 (ATXN2), situado en la región cromosómica 12q23-24. Este es el primer reporte de diagnóstico molecular realizado en Ecuador para esta enfermedad. Presentación de los casos Dos pacientes ecuatorianos de género masculino de 39 y 46 años de edad fueron remitidos al Servicio de Genética Médica del Hospital de Especialidades de las Fuerzas Armadas Nº1 para identifcar el tipo de ataxia espinocerebelosa presente en cada caso. Para ambos pacientes, la evaluación clínica evidenció síntomas compatibles con una SCA2, el análisis genealógico mostró un patrón de herencia autosómico dominante y el diagnóstico molecular confrmó que la ataxia espinocerebelosa presente era de tipo 2. Conclusión El diagnóstico específco de las ataxias espinocerebelosas debe basarse principalmente en una correlación fenotípica-genotípica, la cual involucra evaluaciones clínicas, análisis genealógico y estudios genéticos moleculares para cada caso. La SCA2 constituye un tipo de enfermedad cuyo diagnóstico implica complejidades clínicas y genéticas, concluyendo que este proceso debe efectuarse con la inclusión del asesoramiento genético familiar, siendo el comienzo del manejo integral de esta enfermedad


Assuntos
Humanos , Ataxias Espinocerebelares , Ataxina-2 , Aconselhamento Genético , Diagnóstico Clínico , Patologia Molecular
14.
Blood ; 119(25): 6089-98, 2012 Jun 21.
Artigo em Inglês | MEDLINE | ID: mdl-22446485

RESUMO

Interactions between the multikinase inhibitor sorafenib and the BH3-mimetic obatoclax (GX15-070) were examined in human acute myeloid leukemia (AML) cells. Treatment with sorafenib/obatoclax induced pronounced apoptosis in and reduced the clonogenic growth of multiple AML lines and primary AML cells but not normal CD34(+) cells. Sorafenib triggered rapid and pronounced Mcl-1 down-regulation accompanied by enhanced binding of Bim to Bcl-2 and Bcl-xL, effects that were abolished by obatoclax coadministration. Notably, shRNA knockdown of Bim, Bak, or Bax, but not Noxa, significantly attenuated obatoclax/sorafenib lethality, whereas ectopic expression of Mcl-1 exerted a protective effect. Furthermore, exposure of leukemia cells to sorafenib and obatoclax markedly induced autophagy, reflected by rapid and pronounced LC3 processing and LC3-green fluorescent protein (GFP) punctate formation. Multiple autophagy inhibitors or VPS34 knockdown, significantly potentiated sorafenib/obatoclax lethality, indicating a cytoprotective role for autophagy in this setting. Finally, studies in a xenograft mouse model revealed that combined sorafenib/obatoclax treatment markedly reduced tumor growth and significantly prolonged survival in association with Mcl-1 down-regulation and apoptosis induction, whereas agents administered individually had only modest effects. These findings suggest that combining sorafenib with agents that inhibit Mcl-1 and Bcl-2/Bcl-xL such as obatoclax may represent a novel and potentially effective strategy in AML.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Proteínas Reguladoras de Apoptose/fisiologia , Apoptose/efeitos dos fármacos , Benzenossulfonatos/administração & dosagem , Leucemia Mieloide/tratamento farmacológico , Proteínas de Membrana/fisiologia , Proteínas Proto-Oncogênicas/fisiologia , Piridinas/administração & dosagem , Pirróis/farmacologia , Animais , Protocolos de Quimioterapia Combinada Antineoplásica/farmacologia , Proteínas Reguladoras de Apoptose/antagonistas & inibidores , Proteínas Reguladoras de Apoptose/metabolismo , Proteína 11 Semelhante a Bcl-2 , Benzenossulfonatos/farmacologia , Células Cultivadas , Sinergismo Farmacológico , Feminino , Células HL-60 , Humanos , Indóis , Leucemia Mieloide/metabolismo , Leucemia Mieloide/patologia , Proteínas de Membrana/metabolismo , Camundongos , Camundongos Nus , Niacinamida/análogos & derivados , Compostos de Fenilureia , Proteínas Proto-Oncogênicas/metabolismo , Proteínas Proto-Oncogênicas c-bcl-2/antagonistas & inibidores , Piridinas/farmacologia , Pirróis/administração & dosagem , Sorafenibe , Células U937 , Regulação para Cima/efeitos dos fármacos , Ensaios Antitumorais Modelo de Xenoenxerto
15.
Res Nurs Health ; 26(2): 102-17, 2003 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-12652607

RESUMO

A pretest-posttest, repeated-measures design was used to evaluate the effects of two stress management interventions on a battery of outcomes derived from a psychoneuroimmunological (PNI) framework. The effects of cognitive-behavioral relaxation training groups (CBSM) and social support groups (SSG) were compared with a WAIT-listed control group on the outcomes of psychosocial functioning, quality of life, neuroendocrine mediation, and somatic health. Participants were 148 individuals (119 men, 29 women), diagnosed with HIV disease; 112 (76%) completing the study groups. Using analysis of covariance, the CBSM group was found to have significantly higher postintervention emotional well-being and total quality-of-life scores than did either the SSG or WAIT groups. SSG participants had significantly lower social/family well-being scores immediately postintervention and lower social support scores after 6 months. The findings point to a pressing need for further, well-controlled research with these common intervention modalities.


Assuntos
Infecções por HIV/imunologia , Infecções por HIV/psicologia , Terapia de Relaxamento , Estresse Psicológico/imunologia , Estresse Psicológico/prevenção & controle , Adaptação Psicológica , Adulto , Análise de Variância , Desidroepiandrosterona/metabolismo , Feminino , Nível de Saúde , Humanos , Hidrocortisona/metabolismo , Masculino , Mid-Atlantic Region , Modelos Psicológicos , Psiconeuroimunologia , Estresse Psicológico/etiologia
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