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Nash T.E.,U.S. National Institutes of Health | Garcia H.H.,Instituto Nacional Of Ciencias Neurologicas
Nature Reviews Neurology | Year: 2011

Neurocysticercosis is a parasitic disease caused by the larval (cystic) form of the pork cestode tapeworm, Taenia solium, and is a major cause of acquired seizures and epilepsy worldwide. Development of sensitive and specific diagnostic methods, particularly CT and MRI, has revolutionized our knowledge of the burden of cysticercosis infection and disease, and has led to the development of effective antihelminthic treatments for neurocysticercosis. The importance of calcified granulomas with perilesional edema as foci of seizures and epilepsy in populations where neurocysticercosis is endemic is newly recognized, and indicates that treatment with anti-inflammatory agents could have a role in controlling or preventing epilepsy in these patients. Importantly, neurocysticercosis is one of the few diseases that could potentially be controlled or eliminated - an accomplishment that would prevent millions of cases of epilepsy. This Review examines the rationale for treatment of neurocysticercosis and highlights the essential role of inflammation in the pathogenesis of disease, the exacerbation of symptoms that occurs as a result of antihelminthic treatment, and the limitations of current antihelminthic and anti-inflammatory treatments. © 2011 Macmillan Publishers Limited. All rights reserved. Source

Del Brutto O.H.,Espiritu Santo University, Guayaquil | Garcia H.H.,Instituto Nacional Of Ciencias Neurologicas | Garcia H.H.,Cayetano Heredia Peruvian University
Handbook of Clinical Neurology | Year: 2013

Cysticercosis, an infection caused by the cystic larvae of the pork tapeworm Taenia solium, is one of the most frequent parasitic infections of the human nervous system (neurocysticercosis). It is endemic in most of Latin America, the sub-Saharan Africa, and vast parts of Asia, including the Indian subcontinent. It has also been increasingly diagnosed in developed countries because of migration of people from endemic zones and exposure in travelers. The life cycle involves the development of the adult tapeworm in the human small intestine (after ingesting infected pork with cysts) and larval infection in pig tissues (after ingesting human stools containing the eggs of the tapeworm). Humans get infected by the fecal-oral route, most often from a direct contact with an asymptomatic Taenia carrier. Most common clinical presentations are seizures (particularly late-onset seizures), chronic headaches, and intracranial hypertension. However, cysticerci can locate anywhere in the human nervous system, thus potentially causing almost any neurological syndrome and making clinical diagnosis a difficult task. Neuroimaging is the main diagnostic tool, and specific serology confirms the diagnosis and helps to define the diagnosis when images are unclear. Factors such as location (extraparenchymal versus intraparenchymal), number, size and evolutive stage of the parasites determine the clinical manifestations, therapeutic approach, and prognosis. Management includes symptomatic drugs (analgesics, antiepileptic drugs, anti-inflammatory agents) and in many cases cysticidal drugs, either albendazole or praziquantel. In recent years, efforts have focused on transmission control and potential elimination in endemic regions. © 2013 Elsevier B.V. Source

Gonzales I.,Instituto Nacional Of Ciencias Neurologicas | Garcia H.H.,Cayetano Heredia Peruvian University
Pathogens and Global Health | Year: 2012

Neurological disease resulting from neurocysticercosis (NCC) is common in most of the world. The variability in the biology of the infection and in its clinical manifestations has led to much confusion regarding appropriate management. Therapeutic options have evolved from surgery, symptomatic measures, and steroids, to include the use of anti-parasitic drugs and minimally invasive neurosurgery. This manuscript reviews the principles of medical therapy for NCC, from discussion of the need for individualized management approaches for each type of NCC to exploration of the most likely potential additions or modifications currently under study. © W. S. Maney & Son Ltd 2012. Source

Garcia H.H.,Cayetano Heredia Peruvian University | Garcia H.H.,Instituto Nacional Of Ciencias Neurologicas | Gonzalez A.E.,National Major San Marcos University | Gilman R.H.,Johns Hopkins University
Current Opinion in Infectious Diseases | Year: 2011

Purpose of Review: Taenia solium neurocysticercosis (NCC) has been long recognized as an important cause of neurological morbidity in most of the world. Unwarranted generalization of diagnostic and treatment recommendations made it difficult to assess individual prognosis and responses for each type of NCC. Understanding of the main clinical presentations (dependent on number, location, size, and stage of parasites, as well as on the immune response of the host) allows a better view of treatment options and expected outcomes. Recent Findings: Current treatment options are still limited and involve symptomatic agents, antiparasitic agents, or surgery. The importance of adequate symptomatic management, the potential for improved antiparasitic treatment regimes, in particular combination therapy, and the increasingly important role of minimally invasive neurosurgery are also reviewed in this article. Summary: Treatment decisions in NCC should be individualized in relation to the type of NCC. Initial measures should focus on the symptomatic management before considering antiparasitic therapy when appropriate. Appropriate patient categorization, new antiparasitic regimes, and minimally invasive surgery are improving the prognosis of patients with NCC. © 2011 Wolters Kluwer Health | Lippincott Williams & Wilkins. Source

Newton C.R.,Muhimbili Wellcome Programme | Newton C.R.,Center for Geographical Medicine Coast | Newton C.R.,University College London | Newton C.R.,University of Oxford | And 2 more authors.
The Lancet | Year: 2012

Epilepsy is a common disorder, particularly in poor areas of the world, and can have a devastating effect on people with the disorder and their families. The burden of epilepsy in low-income countries is more than twice that found in high-income countries, probably because the incidence of risk factors is higher. Many of these risk factors can be prevented with inexpensive interventions, but there are only a few studies that have assessed the effect of reducing risk factors on the burden of epilepsy. The mortality associated with epilepsy in low-income countries is substantially higher than in less impoverished countries and most deaths seem to be related to untreated epilepsy (eg, as a result of falls or status epilepticus), but the risk factors for death have not been adequately examined. Epilepsy is associated with substantial stigma in low-income countries, which acts as a barrier to patients accessing biomedical treatment and becoming integrated within society. Seizures can be controlled by inexpensive antiepileptic drugs, but the supply and quality of these drugs can be erratic in poor areas. The treatment gap for epilepsy is high (>60%) in deprived areas, but this could be reduced with low-cost interventions. The substantial burden of epilepsy in poor regions of the world can be reduced by preventing the risk factors, reducing stigma, improving access to biomedical diagnosis and treatment, and ensuring that there is a continuous supply of good quality antiepileptic drugs. Source

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