João Ricardo M. Oliveira

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Motor neuron diseases (MNDs) are a group of neurodegenerative disorders with involvement of upper and/or lower motor neurons, such as amyotrophic lateral sclerosis (ALS), spinal muscular atrophy (SMA), progressive bulbar palsy, and primary lateral sclerosis. Recently, we have mapped a new locus for an atypical form of ALS/MND (atypical amyotrophic lateral(More)
Basal ganglia calcification (striatopallidodentate calcifications) can be caused by several systemic and neurological disorders. Familial Idiopathic Basal Ganglia Calcification (IBGC, "Fahr's disease"), is characterized by basal ganglia and extrabasal ganglia calcifications, parkinsonism and neuropsychiatric symptoms. Because of an increased use of(More)
Investigators of independent studies reported alterations in cytokine serum levels in patients with different mood disorders. Several polymorphisms associated with neuropsychiatric disorders such as schizophrenia and Alzheimer's disease have been reported at the interleukin-1 (IL-1) panel. Here we report the results of three specific polymorphisms at the(More)
Familial idiopathic basal ganglia calcification (FIBGC), also known as “Fahr’s disease,” is a neuropsychiatric disorder with motor and cognitive symptoms. It is characterized pathologically by bilateral calcification most commonly in the basal ganglia and also in other brain regions such as the thalamus and cerebellum. A recent report by Wang et al. (2012)(More)
Familial idiopathic basal ganglia calcification (IBGC, Fahr disease) is an inherited neurologic condition characterized by basal ganglia and extra-basal ganglia brain calcifications, parkinsonism, and neuropsychiatric symptoms. The authors examined six families for linkage to the previously identified genetic locus (IBGC1) located on chromosome 14q. The(More)
Primary familial brain calcification (PFBC) is a neurological disease characterized by calcium phosphate deposits in the basal ganglia and other brain regions and has thus far been associated with SLC20A2, PDGFB or PDGFRB mutations. We identified in multiple families with PFBC mutations in XPR1, a gene encoding a retroviral receptor with phosphate export(More)
We analyzed a deletion/insertion polymorphism within the promoter region of the serotonin transporter gene (5-HTTPLR) in 81 patients with late onset Alzheimer's (AD) disease (mean age 70.02 +/- 8.13 years). Control groups included 81 normal subjects with comparable age (mean age 75.6 +/- 10.2) and 82 younger normal subjects (mean age 37.4 +/- 9.1).(More)
After the identification of the apolipoprotein E gene isoform (APOE-epsilon4) as a risk factor for late-onset Alzheimer's disease (LOAD), the search for other polymorphisms associated with AD has been undertaken by many groups of investigators around the world. These studies have shown controversial results in many populations. More recently, a single(More)
Alzheimer's Disease (AD) is the most common type of dementia among the elderly, with devastating consequences for the patient, their relatives, and caregivers. More than 300 genetic polymorphisms have been involved with AD, demonstrating that this condition is polygenic and with a complex pattern of inheritance. This paper aims to report and compare the(More)