Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 59
Filtrar
1.
Neurologia ; 30(1): 42-9, 2015.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-21893367

RESUMO

INTRODUCTION: The American continent is very rich in psychoactive plants and fungi, and many pre-Columbian Mesoamerican cultures used them for magical, therapeutic and religious purposes. OBJECTIVES: The archaeological, ethno-historical and ethnographic evidence of the use of hallucinogenic substances in Mesoamerica is reviewed. RESULTS: Hallucinogenic cactus, plants and mushrooms were used to induce altered states of consciousness in healing rituals and religious ceremonies. The Maya drank balché (a mixture of honey and extracts of Lonchocarpus) in group ceremonies to achieve intoxication. Ritual enemas and other psychoactive substances were also used to induce states of trance. Olmec, Zapotec, Maya and Aztec used peyote, hallucinogenic mushrooms (teonanacatl: Psilocybe spp) and the seeds of ololiuhqui (Turbina corymbosa), that contain mescaline, psilocybin and lysergic acid amide, respectively. The skin of the toad Bufo spp contains bufotoxins with hallucinogenic properties, and was used since the Olmec period. Jimson weed (Datura stramonium), wild tobacco (Nicotiana rustica), water lily (Nymphaea ampla) and Salvia divinorum were used for their psychoactive effects. Mushroom stones dating from 3000 BC have been found in ritual contexts in Mesoamerica. Archaeological evidence of peyote use dates back to over 5000 years. Several chroniclers, mainly Fray Bernardino de Sahagún, described their effects in the sixteenth century. CONCLUSIONS: The use of psychoactive substances was common in pre-Columbian Mesoamerican societies. Today, local shamans and healers still use them in ritual ceremonies in Mesoamerica.


Assuntos
Comportamento Ritualístico , Alucinógenos/história , Religião/história , Arte/história , Fungos/classificação , Fungos/metabolismo , Alucinógenos/administração & dosagem , Alucinógenos/efeitos adversos , História Antiga , História Medieval , Humanos , México , Plantas Medicinais/efeitos adversos , Plantas Medicinais/classificação , Religião e Medicina
2.
Rev Neurol ; 55(2): 111-20, 2012 Jul 16.
Artigo em Espanhol | MEDLINE | ID: mdl-22760771

RESUMO

INTRODUCTION: The skull cult is a cultural tradition that dates back to at least Neolithic times. Its main manifestations are trophy heads, skull masks, moulded skulls and shrunken heads. The article reviews the skull cult in both pre-Columbian America and the ethnographic present from a neuro-anthropological perspective. DEVELOPMENT: The tradition of shaping and painting the skulls of ancestors goes back to the Indo-European Neolithic period (Natufian culture and Gobekli Tepe). In Mesoamerica, post-mortem decapitation was the first step of a mortuary treatment that resulted in a trophy head, a skull for the tzompantli or a skull mask. The lithic technology utilised by the Mesoamerican cultures meant that disarticulation had to be performed in several stages. Tzompantli is a term that refers both to a construction where the heads of victims were kept and to the actual skulls themselves. Skull masks are skulls that have been artificially modified in order to separate and decorate the facial part; they have been found in the Templo Mayor of Tenochtitlan. The existence of trophy heads is well documented by means of iconographic representations on ceramic ware and textiles belonging to the Paraca, Nazca and Huari cultures of Peru. The Mundurucu Indians of Brazil and the Shuar or Jivaroan peoples of Amazonian Ecuador have maintained this custom down to the present day. The Shuar also shrink heads (tzantzas) in a ritual process. Spanish chroniclers such as Fray Toribio de Benavente 'Motolinia' and Gaspar de Carvajal spoke of these practices. CONCLUSIONS: In pre-Columbian America, the tradition of decapitating warriors in order to obtain trophy heads was a wide-spread and highly developed practice.


Assuntos
Comportamento Ritualístico , Decapitação/história , Cabeça , Indígenas Centro-Americanos/história , Indígenas Sul-Americanos/história , Antropologia Cultural , Arte/história , América Central , Decapitação/etnologia , Rituais Fúnebres/história , História do Século XV , História do Século XVI , História do Século XXI , História Antiga , Humanos , Magia/história , Magia/psicologia , Mandíbula , Máscaras/história , Preservação Biológica/métodos , Crânio , América do Sul , Guerra
4.
Rev Neurol ; 49(7): 349-53, 2009.
Artigo em Espanhol | MEDLINE | ID: mdl-19774528

RESUMO

INTRODUCTION: Epileptic seizures are a common complication among patients who are admitted to rehabilitation hospitals. This work examines aspects related to their aetiology and progress. PATIENTS AND METHODS: The study involved all the patients with a history of epileptic seizures who had been consecutively admitted for rehabilitation during the second semester of 2008. The protocol for data collection included sociodemographic variables, the aetiology, type, frequency and complications of the seizures, and their treatment and side effects. RESULTS: An analysis was performed on 160 patients (62.5% males; mean age: 43.6 years). The main aetiologies were the following: stroke (41.2%), traumatic brain injury (35%), meningitis/encephalitis (5%), primary brain tumour (3.8%), anoxia (3.8%), static encephalopathy (3.8%) and others (7.6%). 7.6% had a history of epilepsy before suffering the brain injury. 16.3% had had a single epileptic seizure. 6.2% presented treatment failure with two antiepileptic drugs, and 12.5% suffered from more than one seizure per month. 17.5% of the patients had suffered from an epileptic status. In semiological terms, the most common seizures were focal seizures (54.5%), generalised seizures (44.4%) and focal seizures with secondary generalisation (31.9%). 76% of the subjects took antiepileptic drugs on a regular basis, but the caregiver was responsible for medication in 70% of cases. Carbamazepine and valproate were the two most frequently used drugs. CONCLUSIONS: Epilepsy can limit rehabilitation therapy in patients with stroke or traumatic injury, due to the risk of developing difficult-to-treat epilepsy. Caregivers often have to take responsibility for the pharmacological treatment in disabled patients with brain damage.


Assuntos
Lesões Encefálicas , Epilepsia/etiologia , Centros de Reabilitação , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Anticonvulsivantes/uso terapêutico , Lesões Encefálicas/complicações , Lesões Encefálicas/reabilitação , Carbamazepina/uso terapêutico , Epilepsia/tratamento farmacológico , Epilepsia/fisiopatologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Ácido Valproico/uso terapêutico , Adulto Jovem
5.
Rev Neurol ; 49(3): 149-55, 2009.
Artigo em Espanhol | MEDLINE | ID: mdl-19621310

RESUMO

INTRODUCTION: Latin American medicine in the 16th century produced the first collections of herbs with native plants from the New World. Treatises on popular therapies appeared, which included gallenic remedies as well as incorporating autochthonous plants. We review the main neurological diseases and their treatments described in The Treasure of Medicines for All Illnesses by Gregorio Lopez (1542-1596). DEVELOPMENT: Some critics claim that his work was an enumeration of empirical prescriptions, sometimes with a magico-religious influence, which was extended in successive reprints. Yet, this manuscript is probably the first treatise on therapeutics written by a European in the New World to describe the native remedies employed in the treatment of diseases. In the section entitled Remedies in alphabetical order the following neurological ailments and appropriate remedies to treat them are described: abscess, apoplexy, brain, chilling, cramp, gota coral or epilepsy, headache, melancholy, memory, migraine, nerves, palsy, paralysis, sciatica, stupor and vertigo. The list of diseases is very complete and includes syndromes ranging from fevers, colics and bruises to phthisis, scabs or burns. The copy of the manuscript in the Vatican contains a final section on Indian medicines, which includes a list of medicinal plants used at that time, with the names given in Nahuatl language. CONCLUSIONS: Headaches, epilepsy and conditions affecting the peripheral nerves were the neurological pathologies that were described at greatest length in The Treasure of Medicines for All Illnesses, and for which a greater number of natural prescriptions were compiled.


Assuntos
Manuscritos Médicos como Assunto/história , Medicina Tradicional/história , Doenças do Sistema Nervoso/história , Farmacognosia/história , Farmacopeias como Assunto/história , História do Século XVI , Humanos , Materia Medica/história , Transtornos Mentais/tratamento farmacológico , Transtornos Mentais/história , México , Doenças do Sistema Nervoso/tratamento farmacológico , Doenças do Sistema Nervoso/terapia , Fitoterapia/história , Plantas Medicinais , Espanha
6.
Rev Neurol ; 48(3): 147-55, 2009.
Artigo em Espanhol | MEDLINE | ID: mdl-19206063

RESUMO

INTRODUCTION: Human T-cell lymphotropic virus type-I (HTLV-I) causes tropical spastic paraparesis/HTLV-I associated myelopathy (TSP/HAM). Immunopathogenesis and available treatments for TSP/HAM are reviewed. DEVELOPMENT: At least 20 million people are infected worldwide and 0.3-4% will develop TSP/HAM. Incidence in endemic areas is around 2 cases/ 100,000 inhabitants and year. The 50% of TSP/HAM patients suffer from clinical progression during their first ten years. Progression is associated with high proviral load and ager than 50 years at onset. HTLV-I proviral DNA and m-RNA load are significantly raised in TSP/HAM patients compared to asymptomatic carriers. This antigenic load activates T cells CD8+ specific for Tax-protein, which up-regulate pro-inflammatory cytokines. Corticoids, plasma-exchange, intravenous immunoglobulins, danazol, pentoxifilline, green-tea polyphenols, lactobacillus fermented milk, zidovudine, lamivudine, monoclonal antibodies (daclizumab), interferon, and valproic acid have been used in open trials in a small number of patients. Nevertheless, their clinical efficacy is limited. Interferon alpha and beta-1a have cytostatic properties and may cause a reduction in HTLV-I proviral load. CONCLUSIONS: High HTLV-I proviral load and an exaggerated pro-inflammatory cellular response are involved in the pathogenesis of TSP/HAM. No therapy has been conclusively shown to alter long-term disability associated with TSP/HAM. Multicentric clinical trials are necessary to assess long-term efficacy of interferon in TSP/HAM.


Assuntos
Infecções por HTLV-I/imunologia , Infecções por HTLV-I/patologia , Vírus Linfotrópico T Tipo 1 Humano/imunologia , Paraparesia Espástica Tropical/imunologia , Paraparesia Espástica Tropical/virologia , Doenças da Medula Espinal/tratamento farmacológico , Doenças da Medula Espinal/imunologia , Corticosteroides/uso terapêutico , Anticorpos Monoclonais/imunologia , Anticorpos Monoclonais/uso terapêutico , Linfócitos T CD8-Positivos/imunologia , Diagnóstico Diferencial , Progressão da Doença , Infecções por HTLV-I/epidemiologia , Infecções por HTLV-I/fisiopatologia , Humanos , Interferon gama/imunologia , Interferon gama/uso terapêutico , Paraparesia Espástica Tropical/patologia , Paraparesia Espástica Tropical/fisiopatologia , Doenças da Medula Espinal/patologia , Doenças da Medula Espinal/fisiopatologia , Carga Viral
7.
Rev Neurol ; 47(7): 374-9, 2008.
Artigo em Espanhol | MEDLINE | ID: mdl-18841550

RESUMO

SUMMARY INTRODUCTION: Several different indigenous groups (Yamana, Selk'nam, Alacaluf, Haush) used to inhabit the Patagonian region of Tierra de Fuego, but are now extinct. AIM: To analyse the healing practices that these prehistoric aborigines used to treat headaches and to compare them with those observed in other anthropological studies. DEVELOPMENT: The article reviews the most important manuscripts from the end of the 19th century written by anthropologists and missionaries who were in contact with these peoples (Bridges, Hyades, Gusinde). The Yamana, or 'canoero' Indians, lived in the coastal areas and ate mostly seals and shellfish. The Selk'nam were nomadic hunter-gatherers who lived in the northern part of the Isla Grande. The Yekamush were the Yamana healers. The chief palliative treatments for pain were fasting, drinking cold water and the application of localised heat and massages. Headaches were one of the most prevalent conditions among the Yamana. Treatment for headaches consisted in hitting the patient's head with prickly chaura (Pernettya mucronata) leaves, which produces a small amount of bleeding, or the use of fresh nettle leaves, which were held in place with a headband. The Selk'nam used the term kwaketan to refer to the feeling of sadness with pain, while the term kwake meant 'illness'. Other common ways of treating headaches included ritual ceremonies with chanting, the detection of painful points, and the absorption and expulsion of the kwake. CONCLUSIONS: Headaches were one of the most frequent neurological pathologies among these prehistoric Fuegian aborigines, in line with the observations made in other transcultural studies conducted on present-day native cultures.


Assuntos
Cefaleia , Indígenas Sul-Americanos , Medicina Tradicional , Antropologia Física , Argentina , Cefaleia/história , Cefaleia/terapia , História do Século XIX , História do Século XX , Humanos
8.
Neurologia ; 23(4): 263-8, 2008 May.
Artigo em Espanhol | MEDLINE | ID: mdl-18516749

RESUMO

INTRODUCTION: Histoplasma capsulatum is an endemic fungus in America that may present as a lung self-limiting infection or be asymptomatic. Disseminated histoplasmosis can occur in cell-mediated immunity disorders and acquired immunodeficiency syndrome. Isolated central nervous system (CNS) histoplasmosis is uncommon, furthermore in immunocompetent patients. PATIENT: A 34 year old inmunocompetent male is reported. He presented with several pathogenic forms of neurohistoplasmosis: chronic meningitis, meningovascular histoplasmosis with stroke, acute myelopathy and chronic recurrent hydrocephalus. Other causes of chronic infectious meningitis were ruled out. Cerebrospinal flow (CSF) analysis showed an increased white cell count, hyperproteinorraquia and decrease of glucose levels. Brain magnetic resonance imaging (MRI) showed hydrocephalus and gadolinium enhancement of the meninges; a spinal cord MRI detected a cervical and thoracic myelopathy. A chronic unspecific inflammatory process and absence of granulomata were observed in a meninge biopsy. Electronic microscopy showed the presence of yeasts in the CSF. Histoplasma capsulatum was isolated in a specific culture from two consecutive CSF samples. The patient was treated with ev amphotericin B and fluconazol, plus 6 months of oral itraconazole. CONCLUSIONS: Isolated chronic CNS histoplasmosis may present as recurrent episodes of stroke, meningitis, myelopathy and hydrocephalus. CSF specific culture can help in the diagnosis.


Assuntos
Encefalopatias/diagnóstico , Encefalopatias/microbiologia , Infecções Fúngicas do Sistema Nervoso Central/diagnóstico , Histoplasmose/diagnóstico , Adulto , Doença Crônica , Humanos , Masculino
9.
Neurologia ; 23(2): 78-84, 2008 Mar.
Artigo em Espanhol | MEDLINE | ID: mdl-18322825

RESUMO

INTRODUCTION: The human T cell lymphotropic virus type I (HTLV-I) is a retrovirus that causes tropical spastic paraparesis/HTLV-I associated myelopathy (TSP/HAM). Objectives. To describe neurological characteristics and the severity of disability in a sample of patients with TSP/HAM. METHODS: All TSP/HAM patients consecutively admitted during 2006 at the Brasilia Sarah Hospital, neurology outpatient clinic were included in the study. HTLV-I infected patient fulfilled criteria for serological positivity at both ELISA and western blot. Ashworth spasticity scale, Barthel index of activities of daily living, kurtzke functional systems and the Expanded Disability Status Scale (EDSS) were applied. All patients performed electrophysiological studies (evoked potentials, electromyogram) and brain/spinal cord magnetic resonance imaging (MRI). RESULTS: Forty two of 249 paraparetic patients (16.9%; 26 females; mean age: 49.8 years) were diagnosed as having TSP/HAM. Mean time of evolution was 11.2 years. Most common neurological syndrome was a chronic progressive spastic paraparesis with hyperreflexia, ankle clonus and bilateral Babinski sign (97.7 %). Other findings were proximal muscle atrophy in lower limbs (28.6 %) , ataxia (21.4%), and peripheral neuropathy (7.1%). Half of patients were wheel-chair restricted or had a domiciliary walk. EDSS median was 6 and Barthel index mean score was 65. Most common findings on spinal cord MRI were thoracic spinal cord atrophy (66.7%) and white matter hyper-intensity areas in cerebral subcortical (42.8 %) and spinal cord (21.4%) regions. CONCLUSIONS: TSP/HAM is a very disabilitating disorder. Peripheral neuropathy and ataxia are other syndromes that should be included in the spectrum of HTLV-I infection.


Assuntos
Avaliação da Deficiência , Infecções por HTLV-I/complicações , Paraparesia Espástica Tropical/fisiopatologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Ataxia/etiologia , Ataxia/fisiopatologia , Córtex Cerebral/patologia , Criança , Feminino , Infecções por HTLV-I/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade , Exame Neurológico , Paraparesia Espástica Tropical/etiologia , Paraparesia Espástica Tropical/patologia , Fatores de Risco , Medula Espinal/patologia , Nervo Sural/patologia , Inquéritos e Questionários
10.
Rev Neurol ; 45(11): 647-54, 2007.
Artigo em Espanhol | MEDLINE | ID: mdl-18050095

RESUMO

AIM: To assess the psychometric attributes of the stroke-adapted 30-item version of the Sickness Impact Profile, Spanish version (SA-SIP30), in stroke survivors. PATIENTS AND METHODS: 79 patients were evaluated (mean age: 68.1 years) by means of the modified Rankin Scale (m-RS), Scandinavian Stroke Scale (SSS), Barthel Index (BI), and the modified 23-item Beck-Hamilton's Depression Rating Scale (HDRS). Health-related quality of life was evaluated using the MOS-Short Form 36 (SF-36) and the SA-SIP30. RESULTS: SA-SIP30 mean score was 36.8. SA-SIP30 floor and ceiling effects were 3.8% and 0%. Regarding SA-SIP30 categories, floor effect ranged from 15.2% (social interaction) to 49.4% (alertness behavior), whereas ceiling effect ranged from 2.5% (social interaction) to 26.6% (household management). A floor effect was observed in seven SA-SIP30 categories. The internal consistency of SA-SIP30 (Cronbach's alpha = 0.87), physical (Cronbach's alpha = 0.89) and psychosocial (Cronbach's alpha = 0.75) dimensions were satisfactory. Standard error of measurement (SEM) values for each SA-SIP30 category ranged from 15.9 (household management) to 26.3 (ambulation). SEM values for overall SA-SIP30, physical and psychosocial dimensions were 8, 10 and 17.3, respectively. Corrected item-category correlations ranged from 0.17 (item 28) to 0.83 (item 23). A significant correlation (Spearman's correlation coefficient; p < 0.0001) between SA-SIP30 scores and BI (-0.71), m-RS (0.68), SSS (-0.67), HDRS (0.52), SF-36 physical (-0.67) and mental components (-0.51) was found. SA-SIP30 mean score significantly increased as m-RS increased (discriminative validity; Kruskal-Wallis, p < 0.0001). CONCLUSION: The Spanish-version of the SA-SIP30 has satisfactory internal consistency, convergent validity and discriminative validity in stroke patients.


Assuntos
Perfil de Impacto da Doença , Acidente Vascular Cerebral/psicologia , Idoso , Idoso de 80 Anos ou mais , Transtornos Cognitivos/diagnóstico , Transtornos Cognitivos/epidemiologia , Transtornos Cognitivos/etiologia , Estudos de Coortes , Humanos , Relações Interpessoais , Idioma , Pessoa de Meia-Idade , Transtornos do Humor/diagnóstico , Transtornos do Humor/epidemiologia , Transtornos do Humor/etiologia , Transtornos dos Movimentos/diagnóstico , Transtornos dos Movimentos/epidemiologia , Transtornos dos Movimentos/etiologia , Psicometria , Qualidade de Vida , Reprodutibilidade dos Testes , Índice de Gravidade de Doença , Espanha , Acidente Vascular Cerebral/classificação , Acidente Vascular Cerebral/epidemiologia
11.
Neurologia ; 22(6): 410-5, 2007.
Artigo em Espanhol | MEDLINE | ID: mdl-17610173

RESUMO

INTRODUCTION: Several South-American native societies snuff psychoactive seeds in magic-religious rituals since ancient times. OBJECTIVES: To describe archeological, historical and ethnographical evidences regarding the ritual use of vilca or yopo (Anadenanthera sp). DEVELOPMENT: Anadenanthera seeds were used in South America 3,000 years ago. Archeological studies found vilca seeds in funerary tombs from 1,000 BC in the north of Chile and Argentina; ceramics and snuff tubes were found in San Pedro de Atacama archeological sites from the same data, and in Tiwanaku ceremonial center in Bolivian Altiplano. Today, Anadenanthera sp is used by several native groups in Orinoco basin, where is known as yopo, and in the Brazilian and Colombian Amazon. Hallucinogenic effect is due to the presence of methyl-tryptamine derivatives. Most snuff is prepared from the roasted and powdered seeds, vegetable ash and/or lime obtained from shells. CONCLUSIONS: Archeological and ethnographical data suggest that vilca was used and is still used by native shamans as a sacred seed in South America, due to its hallucinogenic effects.


Assuntos
Comportamento Ritualístico , Fabaceae/história , Alucinógenos/história , Indígenas Sul-Americanos/história , Sementes , História Antiga , Humanos
12.
Rev Neurol ; 44(12): 755-63, 2007.
Artigo em Espanhol | MEDLINE | ID: mdl-17583870

RESUMO

INTRODUCTION: Almost three out of every four people in the world who suffer a fatal stroke live in developing countries. A number of different tropical diseases may appear in Europe in the coming years as a consequence of the demographic change that is being brought about by migratory flows. We review the main infectious causes of strokes in the tropics. DEVELOPMENT: There are estimated to be 500 million cases of malaria every year. Cerebral malaria can cause cerebral oedema, diffuse or focal compromise of the subcortical white matter and cortical, cerebellar and pontine infarctions. Chagas disease is an independent risk factor for stroke in South America. At least 20 million people have the chronic form of Chagas disease. The main prognostic factors for Chagas-related stroke are the presence of apical aneurysms, arrhythmia and heart failure. Vascular complications of neurocysticercosis include transient ischemic attacks, ischemic strokes due to angiitis and intracranial haemorrhages. The frequency of cerebral infarction associated with neurocysticercosis varies between 2% and 12%. Gnathostomiasis is a cause of subarachnoid haemorrhage in south-east Asia. Other less common causes of stroke are viral haemorrhagic fevers due to arenavirus and flavivirus. CONCLUSIONS: Several diseases that are endemic in the tropics can be responsible for up to 10% of the cases of strokes in adults.


Assuntos
Infecções do Sistema Nervoso Central/complicações , Acidente Vascular Cerebral/etiologia , Clima Tropical , Medicina Tropical , Animais , Infecções do Sistema Nervoso Central/patologia , Infecções do Sistema Nervoso Central/fisiopatologia , Infecções do Sistema Nervoso Central/terapia , Doença de Chagas/complicações , Doença de Chagas/patologia , Doença de Chagas/fisiopatologia , Doença de Chagas/terapia , Diagnóstico Diferencial , Gnathostoma/parasitologia , Febres Hemorrágicas Virais/complicações , Febres Hemorrágicas Virais/patologia , Febres Hemorrágicas Virais/fisiopatologia , Febres Hemorrágicas Virais/terapia , Humanos , Malária/complicações , Malária/patologia , Malária/fisiopatologia , Malária/terapia , Neurocisticercose/complicações , Neurocisticercose/patologia , Neurocisticercose/fisiopatologia , Neurocisticercose/terapia , Fatores de Risco , Acidente Vascular Cerebral/patologia , Acidente Vascular Cerebral/fisiopatologia , Tripanossomíase/complicações , Tripanossomíase/patologia , Tripanossomíase/fisiopatologia , Tripanossomíase/terapia
13.
Rev Neurol ; 44(9): 513-9, 2007.
Artigo em Espanhol | MEDLINE | ID: mdl-17492607

RESUMO

INTRODUCTION: Several prospective and case-control studies have pointed to an association between hyperhomocysteinemia and ischaemic stroke. AIM: To analyse the main factors determining hyperhomocysteinemia in the chronic phase of strokes. PATIENTS AND METHODS: We studied 280 patients with ischaemic stroke (130 subjects < 45 years old; 150 > 45 years old; 50.7% males) who were admitted to the Neurology Service consecutively over the years 2002 and 2003. Both plasma levels of homocysteine (Hc) and the mutation of the gene for 5, 10-methylenetetrahydrofolate reductase (MTHFR) were determined. An analysis was conducted to determine the distribution of the mean levels of Hc according to the aetiological subtype of stroke (TOAST classification) and the presence of vascular risk factors. RESULTS: Hc levels were found to be above normal (> 13 micromol/L) in 44.3% of cases. Hyperhomocysteinemia was more frequent in those above the age of 45 (55.3 versus 31.5%; p < 0.01). The mean Hc value was 16.3 micromol/L and was high both in young patients (15.1 +/- 14.9 micromol/L) and in adults (17.4 +/- 9.1 micromol/L). Results showed that 42.5% were carriers of the C677T mutation (7.1% in homozygosis and 35.4% in heterozygosis). There were more young patients carrying the homozygotic mutation than adults (9.2 versus 5.3%; p = 0.05). Hc levels in plasma were significantly higher (p < 0.01) in patients who were carriers of the homozygotic mutation (29.4 versus 14.2 micromol/L). The main factors determining hyperhomocysteinemia in the multiple linear regression analysis were: age, mutation of the gene for MTHFR, smoking and being male (R = 0.386). CONCLUSION: Genetic and environmental factors determine the levels of Hc in the chronic phase of strokes.


Assuntos
Isquemia Encefálica/complicações , Homocisteína/sangue , Hiper-Homocisteinemia/etiologia , Acidente Vascular Cerebral/complicações , Adulto , Idoso , Isquemia Encefálica/sangue , Doença Crônica , Feminino , Humanos , Hiper-Homocisteinemia/sangue , Masculino , Metilenotetra-Hidrofolato Redutase (NADPH2)/genética , Metilenotetra-Hidrofolato Redutase (NADPH2)/metabolismo , Pessoa de Meia-Idade , Mutação Puntual , Estudos Retrospectivos , Fatores de Risco , Acidente Vascular Cerebral/sangue
14.
Eur J Neurol ; 14(5): 581-5, 2007 May.
Artigo em Inglês | MEDLINE | ID: mdl-17437622

RESUMO

Mitochondrial neurogastrointestinal encephalomyopathy (MNGIE) is caused by mutations in the thymidine phosphorylase gene (ECGF1). We present the first detailed report of a Brazilian MNGIE patient, harboring a novel ECGF1 homozygous mutation (C4202A, leading to a premature stop codon, S471X). Multiple deletions and the T5814C change were found in mitochondrial DNA. Together with gastrointestinal symptoms, endocrine involvement and memory dysfunction, not reported in MNGIE to date, were the most preeminent features.


Assuntos
Transtornos Cognitivos/genética , Gastroenteropatias/genética , Hipogonadismo/genética , Encefalomiopatias Mitocondriais/complicações , Encefalomiopatias Mitocondriais/genética , Mutação/genética , Timidina Fosforilase/genética , Adulto , Encéfalo/enzimologia , Encéfalo/patologia , Encéfalo/fisiopatologia , Brasil , Códon sem Sentido/genética , Transtornos Cognitivos/enzimologia , Transtornos Cognitivos/fisiopatologia , Análise Mutacional de DNA , DNA Mitocondrial/genética , Gastroenteropatias/enzimologia , Gastroenteropatias/fisiopatologia , Deleção de Genes , Marcadores Genéticos/genética , Humanos , Hipogonadismo/enzimologia , Hipogonadismo/fisiopatologia , Masculino , Transtornos da Memória/genética , Transtornos da Memória/metabolismo , Transtornos da Memória/fisiopatologia , Encefalomiopatias Mitocondriais/psicologia
16.
Rev Neurol ; 44(1): 43-50, 2007.
Artigo em Espanhol | MEDLINE | ID: mdl-17199228

RESUMO

INTRODUCTION: Archaeological findings have confirmed the existence of representations of ritual human sacrifices on pottery belonging to the Moche culture (100-750 AD) in northern Peru; until recently these images were thought to be mythological narrations. We review the archaeological and ethno-historical data concerning Moche sacrifices and we attempt to identify the psychoactive seeds and plants used during such rites. DEVELOPMENT: Ethno-historical data from different chronicles of the New World written in the 16th century state that hamala seeds (belonging to the species Nectandra) were used for their analgesic, sedative, narcotic and anticoagulating properties, and that chamico, or stramonium, had an intoxicating effect on those who took it. There were two kinds of Moche rituals, that is, sacrifices as offerings to divinities and as exemplary punishments. Methods of sacrifice included slitting victims' throats, dismembering them and throwing them off mountains. The sacrifices of the Moche were part of a complex and elaborate ritual which consisted in capturing prisoners, parading them with nooses around their necks, making offerings, preparing the officiants and the community, consummation of the sacrifice and presenting the blood to the priest in a chalice. Human sacrifices were part of the propitiatory ceremonies held in honour of the gods in order to favour human fertility, obtain good harvests and preserve a plentiful supply of water for irrigating the valleys. CONCLUSIONS: The therapeutic properties of the seeds of the Nectandra species favoured their utilisation in the ritual sacrifices of the Moche culture. Their use was probably associated with stramonium and San Pedro cactus, which contain extracts rich in hallucinogenic alkaloids.


Assuntos
Comportamento Ritualístico , Psicotrópicos , Sementes , Peru
17.
Cephalalgia ; 26(8): 934-9, 2006 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-16886929

RESUMO

The aim of this study was to investigate the prevalence of patent foramen ovale (PFO) in a consecutive unselected cohort of migraine patients (with and without aura) and compare it with a group of ischaemic young and elderly stroke patients. One hundred and forty-one migraine patients were compared with 330 stroke patients (130 young patients; 200 elderly patients) selected from our hospital stroke data bank. PFO was assessed with transcranial Doppler sonography with i.v. injection of agitated saline. The prevalence of PFO was 51.7% in migraine with aura (MA) patients, 33.7% in migraine without aura (MoA) patients, 33.8% in young stroke patients and 20.5% in elderly stroke patients (P < 0.001). The prevalence of PFO in cryptogenic stroke in young and elderly stroke patients was, respectively, 41.1% and 25% (P = 0.04). The difference between MA and MoA patients was significant (odds ratio = 2.1). The prevalence of PFO in MA patients is higher than in MoA patients and in young cryptogenic stroke patients.


Assuntos
Comunicação Interatrial/diagnóstico por imagem , Comunicação Interatrial/epidemiologia , Transtornos de Enxaqueca/diagnóstico por imagem , Transtornos de Enxaqueca/epidemiologia , Acidente Vascular Cerebral/diagnóstico por imagem , Acidente Vascular Cerebral/epidemiologia , Ultrassonografia Doppler Transcraniana/estatística & dados numéricos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Brasil/epidemiologia , Comorbidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Enxaqueca com Aura/diagnóstico por imagem , Enxaqueca com Aura/epidemiologia , Prevalência , Prognóstico , Medição de Risco/métodos , Fatores de Risco
18.
Neurologia ; 21(6): 297-303, 2006.
Artigo em Espanhol | MEDLINE | ID: mdl-16799904

RESUMO

INTRODUCTION: Moche (100-700 AD) and Lambayeque-Sicán (750-1100 AD) are pre-Columbian cultures from Regional States Period, developed in Northern Peru. Information about daily life, religion and medicine has been obtained through the study of Moche ceramics found in lords and priests tombs, pyramids and temples. OBJECTIVE: To analyze archeological evidences of Moche Medicine and neurological diseases through ceramics. MATERIAL AND METHODS: Representations of diseases in Moche and Lambayeque iconography and Moche pottery collections exposed in Casinelli museum from Trujillo, and Brüning National Archeological museum from Lambayeque, Peru, were studied. The most representative cases were analyzed and photographed, previous authorization from authorities and curators of the museums. RESULTS: The following pathologies were observed in ceramic collections: peripheral facial palsy, facial malformations such as cleft lip, hemifacial spasm, legs and arm amputations, scoliosis and Siamese patients. Male and females Moche doctors were also observed in the ceramics in ritual ceremonies treating patients. CONCLUSIONS: The main pathologies observed in Moche and Lambayeque pottery are facial palsy and cleft lip. These are one of the earliest registries of these pathologies in pre-Columbian cultures in South-America.


Assuntos
Fenda Labial/história , Face/anormalidades , Paralisia Facial/história , Medicina nas Artes , Escultura/história , Indígena Americano ou Nativo do Alasca , Fenda Labial/patologia , Cultura , Face/patologia , Paralisia Facial/patologia , Feminino , História Antiga , História Medieval , Humanos , Masculino , Museus , Peru
19.
Rev Neurol ; 42(8): 489-98, 2006.
Artigo em Espanhol | MEDLINE | ID: mdl-16625512

RESUMO

INTRODUCTION: The San Pedro cactus contains the alkaloid mescaline and other derivates of phenethylamine with hallucinogenic properties. This cactus was used throughout history by a number of different pre-Columbine cultures and civilisations that settled in northern Peru. In this article we review the ethno-archaeological and ethno-historical evidence of the ritual use of the San Pedro cactus in the pre-Columbine cultures, and these findings are compared with the information provided by current ethnographical studies. DEVELOPMENT: The longer a cactus has been stored, the stronger and the higher its content in mescaline-derived alkaloids will be. Archaeological evidence has been found of the use of San Pedro for magical-religious purposes in the following pre-Columbine cultures: Cupisnique (1500 BC), Chavin (1000 BC), Moche (100-750 AD) and Lambayeque (750-1350 AD). Today's master shamans use San Pedro on altars ('mesas') erected for healing rites in order to treat enchantment and bad luck. The mesa follows a sophisticated ritual: 'levantar' (raise) or sniff tobacco with alcohol, ingest San Pedro, pinpoint the diseases, cleanse the evil and 'florecer' (flourish) the sick person. The mesa rite is performed in the early hours of Tuesdays and Fridays, which are sacred days in the Andean religions. San Pedro is sometimes replaced by an infusion of plants and seeds that contain hallucinogenic components, such as ayahuasca and the 'mishas' (Brugmansia sp.). CONCLUSIONS: The ancient tradition of using the San Pedro cactus for healing and hallucinogenic purposes has remained part of the culture in Andean shamanism up to the present day.


Assuntos
Cactaceae/química , Comportamento Ritualístico , Medicina Tradicional , Mescalina/uso terapêutico , Plantas Medicinais/química , Psicotrópicos/uso terapêutico , Arte , Alucinógenos/uso terapêutico , História da Medicina , Humanos , Doenças do Sistema Nervoso/tratamento farmacológico , Peru , Fenetilaminas/uso terapêutico , Xamanismo
20.
Neurologia ; 21(3): 135-49, 2006 Apr.
Artigo em Espanhol | MEDLINE | ID: mdl-16575627

RESUMO

American trypanosomiasis, known as Chagas' disease (CD) is a major Public Health problem in South America. Chronic cardiomyopathy is the most common clinical form of CD. Chagasic cardiomyopathy affects about 30 % of CD patients, and its manifestations begin on average 10-40 years after the initial infection. Chagas' cardiomyopathy is characterized by congestive heart failure, sudden cardiac death, intraventricular conduction defects, arrhythmias and thromboembolism. The relationship between Chagas' cardiomyopathy and ischemic stroke was reviewed. Significant variables that predict ischemic stroke in chagasic patients have been identified: apical aneurysm, cardiac insufficiency and cardiac arrhythmia. Prevalence of apical aneurysm in CD stroke patients has been estimated in 37%. The diagnosis of CD may be established after stroke presentation in at least 40% of patients. Chagasic cardiomyopathy should be included in the differential diagnosis of the etiology of stroke, being a potential source of cardioembolic stroke.


Assuntos
Isquemia Encefálica/fisiopatologia , Doença de Chagas/fisiopatologia , Acidente Vascular Cerebral/fisiopatologia , Animais , Isquemia Encefálica/diagnóstico , Isquemia Encefálica/etiologia , Isquemia Encefálica/terapia , Cardiomiopatia Chagásica/complicações , Cardiomiopatia Chagásica/diagnóstico , Cardiomiopatia Chagásica/fisiopatologia , Cardiomiopatia Chagásica/terapia , Doença de Chagas/complicações , Doença de Chagas/diagnóstico , Doença de Chagas/terapia , Doença Crônica , Humanos , Insetos Vetores , Rhodnius , América do Sul , Acidente Vascular Cerebral/diagnóstico , Acidente Vascular Cerebral/etiologia , Acidente Vascular Cerebral/terapia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA