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Biomedical subjects

R Enríquez

Publications and source records attributed to R Enríquez.

At least 19 recordsLinked to original sources
PubMed2006

Autosomal dominant polycystic kidney disease with congenital absence of contralateral kidney.

Autosomal dominant polycystic kidney disease is the most frequent hereditary kidney disorder, accounting for 8-10% of the cases of end-stage renal disease. It is characterized by bilateral multiple renal cysts, nevertheless, asymmetric enlargement of the kidneys is frequently observed, and this can lead to diagnostic confusion. We report the rare occurrence of autosomal dominant polycystic disease confined to a right kidney and congenital absence of the contralateral one. Unexpected early onset of terminal renal failure in this hypertensive 23-year-old male is discussed with the review of the literature.

Adult↗
PubMed2006

Sequencing of the porB gene: a step toward a true characterization of Neisseria meningitidis.

Variations in class 2/3 (PorB) proteins form the basis for meningococcal serotyping. Antibodies against these proteins are bactericidal, making serotyping results useful not only for epidemiological surveillance of meningococcal disease but also for identifying potential vaccine components. A total of 20 to 60% of meningococcal B and C isolates from any given population are nontypeable (NT) using a panel of monoclonal antibodies. To analyze the mechanisms responsible for the nonserotypeability characteristic in Neisseria meningitidis, we (i) established the nucleotide sequences of porB gene in 146 meningococcal strains (95 not recognized by the serotyping panel), (ii) identified 18 new allelic variants of the porB gene, (iii) correlated allelic variants with serotypes, (iv) suggest the nontypeability characteristic in those 95 NT strains, and (v) reject the possibility of variation in the levels of PorB expression.

Molecular Sequence Data↗
PubMed2006

[Hypersensitivity reaction to systemic corticosteroids in a hemodialysis patients].

Hypersensitivity reactions are a feared complication of hemodialysis considering their potential for a serious and eventually fatal course. This association could reflect a number of different exposures, including concomitant medications. Like this, systemic steroid-induced hypersensitivity reactions do occur, althought their incidence is extremely rare. A few reactions related to metylprednisolone have been reported in renal transplantation. The diagnosis could be confirmed by the patient history and performing skin testing, oral or parenteral challenge or by the evidence of specific IgE. We report on a 39-year-old woman undergoing dialysis therapy in whom severe bronchospasm was induced by corticosteroids. She has a positive systemic reaction on the oral steroid challenge test. A successful desensitization regimen for safe administration was achieved. The recognition of high-risk subjects and alternative therapeutic approach are critical, mainly in the management of patients while receiving corticosteroids or a renal allograft.

Adrenal Cortex Hormones↗
PubMed2004

Postinfectious diffuse proliferative glomerulonephritis and acute renal failure in an HIV patient.

Postinfectious proliferative glomerulonephritis may occur in HIV-infected patients, although it is not a common cause of severe acute renal failure in them. We report a woman with HIV infection, who developed hypocomplementemic acute nephritic syndrome 10 days after an upper respiratory infection. Systemic diseases were excluded. The serum creatinine level increased to 6.6 mg/dl. Renal biopsy showed diffuse endocapillary proliferative glomerulonephritis, with mesangial and capillary walls, granular deposits of IgG and C3 by immunofluorescence. She was given corticosteroids with progressive normalization of her renal function. No opportunistic infections have occurred during 1-year follow-up.

Acute Kidney Injury↗
PubMed2003

Renal hypomagnesemia, hypercalciuria and nephrocalcinosis in a middle-aged man.

We report a 41-year-old man with hypomagnesemia, hypercalciuria, nephrocalcinosis, myopia and horizontal nystagmus. The hypomagnesemia was due to primary renal magnesium loss. He was diagnosed as having the syndrome of renal hypomagnesemia, hypercalciuria and nephrocalcinosis. This is a rare condition generally diagnosed by the first to third decades of life. Renal failure is common and end-stage renal disease can occur in children or young adults. The patient was treated with oral magnesium, chlorthalidone, potassium citrate and allopurinol and was followed up for 3 years. Treatment resulted in an improvement in hypercalciuria but serum magnesium level could not be normalized. The patient's renal function remains stable, with a mild degree of renal insufficiency.

Adult↗
PubMed2001

Antiglomerular basement membrane antibody-crescentic glomerulonephritis complicating chronic bronchiectasis.

A 68-year-old woman with chronic bronchiectasis presented with haematuria and severe oligoanuric renal failure with no other serious systemic manifestation. Antiglomerular basement membrane (anti-GBM) antibodies and anti-myeloperoxidase antibodies were positive. Renal biopsy revealed anti-GBM crescentic glomerulonephritis. A conservative approach was followed and the patient is stable on chronic haemodialysis 6 months later. To the authors' knowledge, there has only been one previous report of anti-GBM disease complicating bronchiectasis.

Aged↗