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1.
Biomedicines ; 12(2)2024 Jan 29.
Artigo em Inglês | MEDLINE | ID: mdl-38397908

RESUMO

Cannabis is a plant that is cultivated worldwide, and its use is internationally regulated, but some countries have been regulating its medicinal, social, and industrial uses. This plant must have arrived in Peru during the Spanish conquest and remains widely cultivated illicitly or informally to this day. However, new regulations are currently being proposed to allow its legal commercialization for medicinal purposes. Cannabis contains specific metabolites known as cannabinoids, some of which have clinically demonstrated therapeutic effects. It is now possible to quantitatively measure the presence of these cannabinoids in dried inflorescences, thus allowing for description of the chemical profile or "chemotype" of cannabinoids in each sample. This study analyzed the chemotypes of eight samples of dried inflorescences from cannabis cultivars in four different regions of Peru, and based on the significant variation in the cannabinoid profiles, we suggest their therapeutic potential. The most important medical areas in which they could be used include the following: they can help manage chronic pain, they have antiemetic, anti-inflammatory, and antipruritic properties, are beneficial in treating duodenal ulcers, can be used in bronchodilators, in muscle relaxants, and in treating refractory epilepsy, have anxiolytic properties, reduce sebum, are effective on Methicillin-resistant Staphylococcus aureus, are proapoptotic in breast cancer, can be used to treat addiction and psychosis, and are effective on MRSA, in controlling psoriasis, and in treating glioblastoma, according to the properties of their concentrations of cannabidiol, cannabigerol, and Δ9-tetrahydrocannabinol, as reviewed in the literature. On the other hand, having obtained concentrations of THC, we were able to suggest the psychotropic capacity of said samples, one of which even fits within the legal category of "non-psychoactive cannabis" according to Peruvian regulations.

2.
Neuromolecular Med ; 25(3): 441-450, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37610648

RESUMO

Glioblastoma (GBM) is the most frequent tumor of the central nervous system, and its heterogeneity is a challenge in treatment. This study examined tumoral heterogeneity involving PDGFRA, KIT, and KDR gene amplification (GA) in 4q12 and its association with clinical parameters. Specimens from 22 GBM cases with GA for the 4q12 amplicon detected by FISH were investigated for homogeneous or heterogeneous coamplification patterns, diffuse or focal distribution of cells harboring GA throughout tumor sections, and pattern of clustering of fluorescence signals. Sixteen cases had homogenously amplification for all three genes (45.5%), for PDGFRA and KDR (22.7%), or only for PDGFRA (4.6%); six cases had heterogeneous GA patterns, with subpopulations including GA for all three genes and for two genes - PDGFRA and KDR (13.6%), or GA for all three and for only one gene - PDGFRA (9.1%) or KIT (4.6%). In 6 tumors (27.3%), GA was observed in focal tumor areas, while in the remaining 16 tumors (72.7%) it was diffusely distributed throughout the pathological specimen. Amplification was universally expressed as double minutes and homogenously stained regions. Coamplification of all three genes PDGFRA, KIT, and KDR, age ≥ 60 years, and total tumor resection were statistically associated with poor prognosis. FISH proved effective for detailed interpretation of molecular heterogeneity. The study uncovered an even more diverse range of amplification patterns involving the 4q12 oncogenes in GBM than previously described, thus highlighting a complex tumoral heterogeneity to be considered when devising more effective therapies.


Assuntos
Glioblastoma , Humanos , Pessoa de Meia-Idade , Sistema Nervoso Central , Aberrações Cromossômicas , Relevância Clínica , Amplificação de Genes , Glioblastoma/genética , Receptores Proteína Tirosina Quinases , Receptor 2 de Fatores de Crescimento do Endotélio Vascular/genética , Receptor alfa de Fator de Crescimento Derivado de Plaquetas/metabolismo
3.
Res Microbiol ; 173(4-5): 103922, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35104604

RESUMO

Cadmium (Cd) is a heavy metal used as raw material for several fertilizers and pesticides. The increase of Cd concentration in soils has been observed in cultivated areas, affecting animals, plants, and microorganisms. Gluconacetobacter diazotrophicus is a plant growth-promoting bacterium able to survive under adverse environmental conditions. Here, we investigated key mechanisms involved with the resistance of G. diazotrophicus to Cd. Proteomic analyses revealed that the main pathways regulated in response to Cd are nutrient uptake, multidrug efflux pumps, response to oxidative stress, and protein quality control system. Extracytoplasmic proteins related to multidrug efflux pumps were up-accumulated, while several proteins related to nutrients uptake were down-accumulated. The relevance of these pathways for bacterial resistance to Cd was investigated by reverse genetic analysis using mutants defective for nutrient uptake (tdbr, ompW, and oprB), multidrug efflux (czcC), response to oxidative stress (ggt), and protein quality control system (clpX). Our data demonstrated the essential role of the tdbr and czcC genes for resistance to Cd in G. diazotrophicus. These results contribute to a better understanding of the resistance mechanisms to Cd in G. diazotrophicus, shedding light on responses associated with extracytoplasmic compartments.


Assuntos
Cádmio , Gluconacetobacter , Cádmio/metabolismo , Gluconacetobacter/genética , Gluconacetobacter/metabolismo , Plantas/microbiologia , Proteômica
4.
Rev. bras. ginecol. obstet ; 42(3): 124-132, Mar. 2020. tab
Artigo em Inglês | LILACS | ID: biblio-1098861

RESUMO

Abstract Objective To assess the use of the intensive care unit (ICU) and its effect on maternal mortality (MM) among women with severe maternal morbidity (SMM). Materials and Methods A secondary analysis of a cross-sectional study on surveillance of SMM in 27 Brazilian obstetric referral centers. The analysis focused on the association between ICU use and maternal death according to individual characteristics and disease severity. Two multivariate regressions considering use of the ICU, age, ethnicity, adequacy of care and the human development index were performed to identify the factors associated to maternal death and maternal near-miss. Results Out of 82,388 deliveries during the period, there were 9,555 (11.6%) women with SMM, and the MM ratio was of 170.4/100 thousand live births. In total, 8,135 (85.1%) patients were managed in facilities in which ICUs were available; however, only 2,059 (25.3%) had been admitted to the ICU. On the multivariate analysis, when the severity of the maternal disease was measured by the maternal severity score (MMS), the strength of the association between the use of the ICU and maternal death was greatly reduced, along with inadequate care and non-availability of the ICU at the facility. On the assessment of only the more critical cases (SMO, severe maternal outcome), the same pattern of association between ICU and MM was observed. In the models used, only inadequate care and MSS were significantly associated with MM. Conclusion The current study indicates that the main variables associated with maternal death are the severity and adequacy of the case management, which is more frequent in ICU admissions. The use of the ICU without the stratification of the patients by severity may not produce the expected benefits for part of the women.


Resumo Objetivo Avaliar o efeito da utilização de unidades de terapia intensiva (UTIs) na mortalidade materna (MM) entre mulheres com morbidade materna grave (MMG). Materiais e Métodos Foi realizada uma análise secundária de um estudo transversal de vigilância de morbidade materna grave em 27 centros de referência obstétrica no Brasil. O foco desta análise foi a associação entre a utilização de UTI e morte materna segundo características individuais e condições de gravidade. Análises múltiplas considerando as variáveis uso de UTI, idade, etnia, adequação do cuidado e índice de desenvolvimento humano foram realizadas para identificar os fatores associados à morte materna e near-miss materno. Resultados Dos 82.388 partos ocorridos durante o período de estudo, 9.555 (11,6%) mulheres apresentaram MMG, e a razão de MM foi de 170,4/100 mil nascidos vivos. Neste grupo, 8.135 (85,1%) pacientes foram atendidas em instituições com disponibilidade de leitos de UTI, mas apenas 2.059 (25,3%) foram de fato admitidas em leitos de UTI. Na análise de regressão multivariada, quando se considerou a gravidade do caso pelo maternal severity score (pontuação de severidade materna, MMS, na sigla em inglês), houve uma grande redução da força de associação entre utilização de UTI e morte materna, além da inadequação do cuidado e não disponibilidade de UTI na instituição. Na avaliação considerando apenas os casos de maior gravidade (desfecho materno grave, DMG), observou-se o mesmo padrão de associação entre UTI e MM. Nos modelos utilizados, apenas a inadequação do cuidado e o MSS apresentam associação significativa com a MM. Conclusão O presente estudo aponta que as principais variáveis associadas à morte materna são a gravidade e a adequação do manejo do caso, mais frequentes nas internações em UTI. A utilização dos leitos de UTI sem a estratificação da gravidade da paciente pode não trazer benefícios esperados para uma parte das mulheres.


Assuntos
Humanos , Feminino , Gravidez , Criança , Adolescente , Adulto , Adulto Jovem , Complicações na Gravidez/mortalidade , Cuidado Pré-Natal , Aceitação pelo Paciente de Cuidados de Saúde , Unidades de Terapia Intensiva/estatística & dados numéricos , Índice de Gravidade de Doença , Brasil , Mortalidade Materna , Análise de Regressão , Pessoa de Meia-Idade
6.
Surg Neurol Int ; 10: 193, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31637094

RESUMO

BACKGROUND: The aim of the study was to characterize the clinical profile of patients with anterior communicating artery (ACoA) aneurysms and examine potential correlations between clinical findings, aneurysm morphology, and outcome. METHODS: A review of medical records and diagnostic neuroimaging reports of patients treated at a neurosurgical service in Porto Alegre, Brazil, between August 2008 and January 2015 was performed. RESULTS: During the period, 100 patients underwent surgery for ACoA aneurysms. Fifteen had unruptured aneurysms and 85 had ruptured aneurysms. Ruptured aneurysms had a higher aspect ratio than unruptured ones (2.37 ± 0.71 vs. 1.93 ± 0.51, P = 0.02). Intraoperative rupture occurred in 3%, and temporary clipping was performed in 15%. Clinical vasospasm occurred in 43 patients with ruptured aneurysms (50.6%). Overall, mortality was 26%; 25 patients in the ruptured group (29.4%) and one in the unruptured group (6%). The Glasgow Outcome Scale (GOS) was favorable (GOS 4 or 5) in 54% of patients, significantly more so in those with unruptured aneurysms (P = 0.01). In patients with ruptured aneurysms, mortality was associated with preoperative Hunt and Hess (HH) score (P < 0.001), hydrocephalus (P < 0.001), and clinical complications (P < 0.001). Unfavorable outcomes were associated with HH score (P < 0.001), Fisher grade (P = 0.015), clinical vasospasm (P = 0.012), external ventricular drain (P = 0.015), hydrocephalus (P < 0.001), and presence of clinical complications (P = 0.001). In patients with unruptured aneurysms, presence of clinical complications was the only factor associated with mortality (P < 0.001). CONCLUSION: Despite advances in the management of subarachnoid hemorrhage and surgical treatment of aneurysms, mortality is still high, especially due to clinical complications.

7.
J Neuropathol Exp Neurol ; 78(4): 297-304, 2019 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-30840759

RESUMO

We investigated 113 adult Brazilian patients with glioblastoma (GBM) for comparison with patients from distinct geographical areas and evaluation of suitability for novel targeted therapies. Patients were assessed for clinical features and tumor genomic characteristics such as ROS1 and NTRK1 rearrangements, KIT, PDGFRA, and KDR amplification, and RB1 deletion using multicolor fluorescence in situ hybridization. The majority of patients were male (53%), over 40 years (94%), with tumor located in single site (64%), in the right cerebral hemisphere (60%), and underwent partial resection (71%); 14% presented complications after surgery. The main clinical sign at diagnosis was focal abnormality (57%); frontal (31%); and temporal (20%) regions were most commonly affected. Median hospitalization time was 20 days, median survival was 175 days. One tumor was positive for rearrangement in NTRK1 and another in ROS1 (0.9% each). PDGFRA was amplified in 20% of cases, often co-amplified with KDR (>90%) and KIT (>60%). RB1 was deleted in 16% of patients. There was no association between these molecular abnormalities and patient survival. However, older age, complications after surgery, and right-sided tumors were independent variables associated with patient survival. This study contributes information on the molecular profile of glioblastomas in Latin America possibly supporting new target therapies.


Assuntos
Neoplasias Encefálicas/genética , Neoplasias Encefálicas/patologia , Glioblastoma/genética , Glioblastoma/patologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Brasil , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem
8.
Res. Biomed. Eng. (Online) ; 33(4): 301-312, Oct.-Dec. 2017. tab, graf
Artigo em Inglês | LILACS | ID: biblio-896197

RESUMO

Abstract Introduction In Brazil, professionals, scientific community, and members of regulatory bodies have not yet achieved a consensus regarding who can legally perform the professional duties of a clinical engineer. We aim at clarifying this aspect, based on a detailed analysis of the pertinent regulations. Methods We acted on three fronts: (i) reviewing the current legislation regarding the clinical engineering exercise; (ii) visiting hospitals and working as trainee to understand how this exercise is implemented on Brazil's Federal District; (iii) one of the authors participated in virtual discussion groups of clinical engineering professionals, monitoring collective understanding of regulations, checking consistency of proper knowledge, and acting as an active opinion leader in the subject among peers. Results We try to make a formal definition of clinical engineer and indicate their characteristic activities. We propose a synthesis of the regulation regarding healthcare products' integrity protection and health technology management, identifying the engineering activities necessary to achieve those legal requirements. We analyze the legal constraints and conditions to exert engineering, indicating the necessary professionals' attributions and the way to obtain them. Finally, we provide a brief analysis of the technical requirements presented by the Brazilian Consumer Protection Code and of the 15.943 Brazilian Standard (NBR). Discussion We conclude that, despite the lack of consensus about the Clinical Engineering activity, there exists in Brazil a Clinical Engineering regulation, but it is spread in complex laws and normative resolutions, defining compulsory responsibilities and attributions, as well as conditions and prerequisites for role performance.

9.
J Neurooncol ; 135(3): 465-472, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28856550

RESUMO

Glioblastoma stands out as the most frequent central nervous system neoplasia, presenting a poor prognosis. The aim of this study was to verify the frequency and clinical significance of the aneuploidy of chromosomes 7 and 10, EGFR amplification, PTEN and TP53 deletions and 1p/19q deficiency in adult patients diagnosed with glioblastoma. The sample consisted of 40 patients treated from November 2011 to March 2015 at two major neurosurgery services from Southern Brazil. Molecular cytogenetic analyses of the tumor were performed through fluorescent in situ hybridization (FISH). The clinical features evaluated consisted of age, sex, tumor location, clinical symptoms, family history of cancer, type of resection and survival. The mean age of the patients was 59.3 years (ranged from 41 to 83). Most of them were males (70%). The median survival was 145 days. Chromosome 10 monosomy was detected in 52.5% of the patients, chromosome 7 polysomy in 50%, EGFR amplification in 42.5%, PTEN deletion in 35%, TP53 deletion in 22.5%, 1p deletion in 5% and 19q deletion in 7.5%. Age was shown to be a prognostic factor, and patients with lower age presented higher survival (p = 0.042). TP53 and PTEN deletions had a negative impact on survival (p = 0.011 and p = 0.037, respectively). Our data suggest that TP53 and PTEN deletions may be associated with a poorer prognosis. These findings may have importance over prognosis determination and choice of the therapy to be administered.


Assuntos
Neoplasias Encefálicas/genética , Glioblastoma/genética , Adulto , Idoso , Idoso de 80 Anos ou mais , Aneuploidia , Neoplasias Encefálicas/epidemiologia , Neoplasias Encefálicas/patologia , Neoplasias Encefálicas/cirurgia , Brasil , Cromossomos Humanos Par 1 , Cromossomos Humanos Par 10 , Cromossomos Humanos Par 7 , Receptores ErbB/genética , Feminino , Glioblastoma/epidemiologia , Glioblastoma/patologia , Glioblastoma/cirurgia , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Mutação , PTEN Fosfo-Hidrolase/genética , Proteína Supressora de Tumor p53/genética
10.
Biomed Pharmacother ; 74: 200-5, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-26349985

RESUMO

PURPOSE: Down syndrome (DS) is caused by the triplication of chromosome 21. Studies have demonstrated platelets abnormalities and oxidative stress in DS subjects. The enzymes NTPDase, 5'-nucleotidase and adenosine deaminase (ADA) represent an important therapeutic target since they interfere in the extracellular nucleotide pool altering platelet functions. In this study, we evaluated the ectonucleotidases activities and oxidative stress parameters in samples of DS and healthy individuals. METHODS AND RESULTS: The population consisted of 28 subjects with DS and 28 healthy subjects as a control group. Blood was obtained from each subject and used for platelet and serum preparation. NTPDase activity using ATP as substrate was increased in platelets of DS patients in relation to the control group; however, no alterations were observed in the ADP hydrolysis. A decrease in the 5'-nucleotidase activity and an increase in the ADA activity was observed in platelet of DS subjects when compared to healthy individuals (P<0.05). The lipid peroxidation and total thiol content was decreased in serum of DS individuals. Furthermore, superoxide dismutase and catalase activities were increased in whole blood of this group (P<0.05). CONCLUSION: Alterations in the ectonucleotidase activities in platelets as well as changes in the oxidative stress parameters may contribute to the clinical features of DS.


Assuntos
Adenosina Trifosfatases/metabolismo , Plaquetas/patologia , Síndrome de Down/fisiopatologia , Estresse Oxidativo , Adenosina Desaminase/metabolismo , Trifosfato de Adenosina/metabolismo , Adolescente , Adulto , Biomarcadores/metabolismo , Estudos de Casos e Controles , Síndrome de Down/sangue , Feminino , Humanos , Hidrólise , Peroxidação de Lipídeos/fisiologia , Masculino , Superóxido Dismutase/metabolismo , Adulto Jovem
11.
Clin Chim Acta ; 433: 105-10, 2014 Jun 10.
Artigo em Inglês | MEDLINE | ID: mdl-24631131

RESUMO

BACKGROUND: Subjects with Down syndrome (DS) have an increased susceptibility to infections and autoimmune disorders. ATP, adenosine, and acetylcholine contribute to the immune response regulation, and NTPDase, adenosine deaminase (ADA) and acetylcholinesterase (AChE) are important enzymes in the control of the extracellular levels of these molecules. We evaluated the activities of these enzymes and the cytokine levels in samples of DS individuals. METHODS: The population consisted of 23 subjects with DS and 23 healthy subjects. Twelve milliliters of blood was obtained from each subject and used for lymphocyte and serum preparation. Lymphocytes were separated on Ficoll density gradients. After isolation, NTPDase and AChE activities were determined. RESULTS: The NTPDase activity using ADP as substrate was increased in lymphocytes of DS patients compared to control (P<0.05); however, no alterations were observed in the ATP hydrolysis. An increase was observed in the AChE activity in lymphocytes and in ADA activity in serum of DS patients when compared to healthy subjects (P<0.05). In DS subjects, an increase in the levels of IL-1ß, IL-6, TNF-α and IFN-γ and a decrease in the IL-10 levels were also observed (P<0.05). CONCLUSIONS: Alterations in the NTPDase, ADA and AChE activities as well changes in the cytokine levels may contribute to immunological alterations observed in DS.


Assuntos
Acetilcolinesterase/metabolismo , Hidrolases Anidrido Ácido/metabolismo , Síndrome de Down/enzimologia , Linfócitos/enzimologia , Acetilcolinesterase/sangue , Hidrolases Anidrido Ácido/sangue , Adenosina Desaminase/sangue , Adenosina Desaminase/metabolismo , Adulto , Estudos de Casos e Controles , Citocinas/sangue , Síndrome de Down/sangue , Feminino , Humanos , Inflamação/metabolismo , Masculino
12.
Women Health ; 53(3): 298-316, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23705760

RESUMO

Overwhelming data support the relationship between physical inactivity and inflammatory processes underlying metabolic disorders. The aim of this review was to assess critically the body of evidence for the relationships between exercise protocols and levels of inflammatory biomarkers in women. Systematic literature searches using PubMed Medline, Cochrane Central Register of Controlled Trials, Web of Science, LILACS, and SciELO of publications from 1993 to January 2012 were conducted using the following keywords: inflammation, cytokine, exercise, physical training, aerobic training, cardiovascular training, strength training, resistance training, interval training, cardiac rehabilitation, and therapeutic lifestyle modification/management. Three studies reported no significant changes in inflammatory status, one documented an increase in inflammatory biomarkers, and 12 articles reported decreased inflammatory biomarkers associated with exercise. Secondary lifestyle characteristics, such as strenuous physical labor or smoking, were correlated with levels of inflammatory biomarkers. Integrative interventions, including diet, moderate aerobic (60% to 80% of maximum heart rate, or 50% to 60% of VO2max) and circuit resistance training (8 to 10 exercises, 8 to 12 repetitions), health education, and counseling, used together, appeared to be effective strategies to improve inflammatory biomarkers in women.


Assuntos
Biomarcadores/sangue , Terapia por Exercício/métodos , Exercício Físico/fisiologia , Inflamação/sangue , Doenças Metabólicas/sangue , Proteína C-Reativa/metabolismo , Reabilitação Cardíaca , Feminino , Humanos , Atividade Motora/fisiologia , Fator de Necrose Tumoral alfa/sangue
13.
Arq. neuropsiquiatr ; 68(6): 918-922, Dec. 2010. ilus, graf, tab
Artigo em Inglês | LILACS | ID: lil-571335

RESUMO

Vasospasm remains an extremely serious complication that affects patients presenting with subarachnoid hemorrhage (SAH) due to ruptured intracranial aneurysms. The current therapeutic armamentarium is still insufficient in many cases, and the search for new therapies is necessary. In this study, we evaluated the effect of N-acetylcysteine (NAC) on cerebral arterial vasospasm using an experimental model. Twenty-four wistar rats were divided into 4 groups: [1] Control, [2] SAH, [3] SAH+NAC and [4] SAH+Placebo. The experimental model employed double subarachnoid injections of autologous blood. The proposed dose of NAC was 250 mg/kg intraperitoneally per day. We analyzed the inner area of the basilar artery to assess the action of NAC. The experimental model proved to be very adequate, with a mortality rate of 4 percent. The inner area of the basilar artery in the SAH group showed significant difference to the control group (p=0.009). The use of NAC significantly reduced vasospasm as compared to the untreated group (p=0.048) and established no significant difference to the control group (p=0.098). There was no significant improvement with the administration of placebo (p=0.97). The model of the dual hemorrhage proved to be very useful for vasospasm simulation, with overall low mortality. The administration of NAC significantly reduced vasospasm resulting from SAH, and may represent a new therapeutic alternative.


O vasoespasmo arterial encefálico continua sendo uma complicação extremamente grave que acomete pacientes com hemorragia subaracnóidea (HSA) por ruptura de aneurismas. O arsenal terapêutico atual ainda, em muitos casos, é insuficiente e a busca de novas alternativas terapêuticas torna-se necessária. Neste estudo, avaliamos a ação da N-acetilcisteína (NAC) sobre o vasoespasmo arterial encefálico em um modelo experimental. Foram utilizados 24 ratos wistar divididos em 4 grupos: [1] Controle, [2] HSA, [3] HSA+NAC e [4] HSA+Placebo. O modelo experimental utilizado foi o da dupla injeção subaracnóidea de sangue autólogo. A dose proposta da NAC foi de 250 mg/kg/dia por via intraperitoneal. Foi analisada a área interna da artéria basilar para avaliação da ação da NAC. O modelo experimental mostrou-se excelente com mortalidade de 4 por cento. A mensuração da área interna da artéria basilar do grupo HSA demonstrou diminuição significativa em relação ao grupo controle (p=0,009). A administração da NAC reduziu significativamente o vasoespasmo em relação ao grupo não tratado (p=0,048) e estabeleceu diferença não significativa em relação ao grupo controle (p=0,098). Não houve melhora significativa com administração de placebo (P=0,97). O modelo da dupla hemorragia mostrou-se bastante útil para reprodução do vasoespasmo, com baixos índices de mortalidade. A administração da NAC diminuiu significativamente o vasoespasmo decorrente da HSA, podendo representar uma nova alternativa terapêutica.


Assuntos
Animais , Masculino , Ratos , Acetilcisteína/uso terapêutico , Sequestradores de Radicais Livres/uso terapêutico , Hemorragia Subaracnóidea/complicações , Vasoespasmo Intracraniano/prevenção & controle , Modelos Animais de Doenças , Ratos Wistar , Vasoespasmo Intracraniano/etiologia
14.
Arq Neuropsiquiatr ; 68(3): 346-9, 2010 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-20602033

RESUMO

Occurrence of peritumoral brain edema (PBE) in meningiomas has been associated with several factors in recent years, although its pathophysiological mechanism has not yet been fully elucidated. The aim of this study was to analyze the correlation between the presence / degree of PBE and factors such as gender, age, size and histological subtype of tumor. We analyzed the MRI images of 74 patients operated on Hospital Beneficência Portuguesa de Porto Alegre for the presence / degree of PBE and data was statistically correlated with the parameters of the patient. PBE was present in 70.1% of patients. Tumors with higher volume had more PBE. Tumors of the olfactory groove showed more PBE than sphenoid wing and parassagittal tumors. Transitional subtype showed more PBE than fibroblastic and meningothelial subtypes.


Assuntos
Edema Encefálico/patologia , Neoplasias Meníngeas/patologia , Meningioma/patologia , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Edema Encefálico/etiologia , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Neoplasias Meníngeas/complicações , Meningioma/complicações , Pessoa de Meia-Idade , Estudos Retrospectivos , Índice de Gravidade de Doença , Fatores Sexuais , Carga Tumoral , Adulto Jovem
15.
Arq. neuropsiquiatr ; 68(3): 346-349, June 2010. ilus, graf
Artigo em Inglês | LILACS | ID: lil-550263

RESUMO

Occurrence of peritumoral brain edema (PBE) in meningiomas has been associated with several factors in recent years, although its pathophysiological mechanism has not yet been fully elucidated. The aim of this study was to analyze the correlation between the presence / degree of PBE and factors such as gender, age, size and histological subtype of tumor. We analyzed the MRI images of 74 patients operated on Hospital Beneficência Portuguesa de Porto Alegre for the presence / degree of PBE and data was statistically correlated with the parameters of the patient. PBE was present in 70.1 percent of patients. Tumors with higher volume had more PBE. Tumors of the olfactory groove showed more PBE than sphenoid wing and parassagittal tumors. Transitional subtype showed more PBE than fibroblastic and meningothelial subtypes.


A presença de edema cerebral peritumoral (ECP) em meningiomas tem sido associada a diversos fatores nos últimos anos, embora o seu mecanismo fisiopatológico ainda não tenha sido inteiramente elucidado. O objetivo desse estudo foi analisar a correlação entre a presença/grau de ECP e fatores como sexo, idade, volume e subtipo histológico do tumor. Foram analisadas imagens de RM de 74 pacientes operados no Hospital Beneficência Portuguesa de Porto Alegre quanto à presença/grau de ECP e os dados correlacionados estatisticamente com os parâmetros do paciente. ECP estava presente em 70,1 por cento dos pacientes. Tumores com maior volume apresentaram mais ECP. Tumores da goteira olfatória apresentaram mais ECP que os da asa do esfenóide e que os parassagitais. Meningiomas transicionais apresentaram mais ECP que os fibroblásticos e que os meningoteliais.


Assuntos
Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem , Edema Encefálico/patologia , Neoplasias Meníngeas/patologia , Meningioma/patologia , Fatores Etários , Edema Encefálico/etiologia , Imageamento por Ressonância Magnética , Neoplasias Meníngeas/complicações , Meningioma/complicações , Estudos Retrospectivos , Índice de Gravidade de Doença , Fatores Sexuais , Carga Tumoral , Adulto Jovem
16.
Arq Neuropsiquiatr ; 68(6): 918-22, 2010 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-21243253

RESUMO

Vasospasm remains an extremely serious complication that affects patients presenting with subarachnoid hemorrhage (SAH) due to ruptured intracranial aneurysms. The current therapeutic armamentarium is still insufficient in many cases, and the search for new therapies is necessary. In this study, we evaluated the effect of N-acetylcysteine (NAC) on cerebral arterial vasospasm using an experimental model. Twenty-four wistar rats were divided into 4 groups: [1] Control, [2] SAH, [3] SAH+NAC and [4] SAH+Placebo. The experimental model employed double subarachnoid injections of autologous blood. The proposed dose of NAC was 250 mg/kg intraperitoneally per day. We analyzed the inner area of the basilar artery to assess the action of NAC. The experimental model proved to be very adequate, with a mortality rate of 4%. The inner area of the basilar artery in the SAH group showed significant difference to the control group (p=0.009). The use of NAC significantly reduced vasospasm as compared to the untreated group (p=0.048) and established no significant difference to the control group (p=0.098). There was no significant improvement with the administration of placebo (p=0.97). The model of the dual hemorrhage proved to be very useful for vasospasm simulation, with overall low mortality. The administration of NAC significantly reduced vasospasm resulting from SAH, and may represent a new therapeutic alternative.


Assuntos
Acetilcisteína/uso terapêutico , Sequestradores de Radicais Livres/uso terapêutico , Hemorragia Subaracnóidea/complicações , Vasoespasmo Intracraniano/prevenção & controle , Animais , Modelos Animais de Doenças , Masculino , Ratos , Ratos Wistar , Vasoespasmo Intracraniano/etiologia
17.
Cancer Nurs ; 29(6): 499-505, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-17135824

RESUMO

The purpose of this study was to evaluate the complexity of postoperative care required by women who had undergone breast or gynecologic cancer surgery, using the Therapeutic Intervention Scoring System-28. An observational, longitudinal study was carried out on 83 women admitted postoperatively to the Intensive Care Unit of the Center for Women's Integrated Healthcare. The results of this study show that women diagnosed with gynecologic cancer had a significantly higher mean Therapeutic Intervention Scoring System-28 score compared with women who had been diagnosed with breast cancer (P = .01). Women who underwent gynecologic surgery had a significantly higher mean Therapeutic Intervention Scoring System-28 score than women who had breast surgery (P = .03). Most of the activities performed by staff during the postoperative intensive care unit period involved only basic care procedures. Only advanced age and hypertension were related to death during the postoperative period. In conclusion, from the nursing standpoint, the complexity of care required in the intensive care unit during the postoperative period was moderate. Women aged 80 years or older were at the highest risk of death during this period.


Assuntos
Neoplasias da Mama/enfermagem , Neoplasias da Mama/cirurgia , Neoplasias dos Genitais Femininos/enfermagem , Neoplasias dos Genitais Femininos/cirurgia , Cuidados Pós-Operatórios/estatística & dados numéricos , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Unidades de Terapia Intensiva , Pessoa de Meia-Idade , Prognóstico
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