Biomedical subjects

Ma L Traba Villameytide

Publications and source records attributed to Ma L Traba Villameytide.

2 recordsLinked to original sources

PubMed2005

[Porphyrins in renal calculi (review)].

We performed a review of the porphyrines content in a type of black, charcoal-like, renal calculi exhibiting infrared spectra (IRS) similar to those characteristic of "organic material" which has not yet been fully elucidate. Several other types of renal calculi, mainly those of small size, spontaneous passage renal stone, may also have diffuse or isolated dark charcoal components showing "organic material" IRS. After observing that haemoglobin has an "organic material" IRS, we studied, by a sensitive thin layer chromatography method, the presence of porphyrines in several types of dark or charcoal renal stones, since porphyrines are the physiological precursors of haemo group biosynthesis. We found two types of porphyrine content: coproporphyrin, in patients suffering from hepatopathy, and uroporphyrin and heptacarboxil-porphyrin in patients with some types of porphyria or with chronic renal failure.

Humans↗

PubMedDate not supplied

[Indinavir and renal lithiasis].

Indinavir is a new specific and potent drug that inhibits, like other antiretroviral agents, the protease of immune deficiency virus (HIV) or acquired immune deficiency syndrome (AIDS), an enzyme necessary to maduration and replication of the virus. Indinavir has the capacity to bind the active site causing a decrease in plasma of HIV1-RNA and an increase of T-CD4 helper lymphocytes. The aim of this work is to study in HIV and/or AIDS patients treated with indinavir the crystalluria and the formation of renal calculi due to the clearance of this drug. Two out of nine patients studied in this work presented abundant crystalluria and one of them presented spontaneously passed renal stone. Urinary crystals were studied under polarized-light microscopy and renal stone was analyzed by infrared spectroscopy.

HIV Infections↗