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J C Rodríguez García

Publications and source records attributed to J C Rodríguez García.

8 recordsLinked to original sources
PubMed2005

Direct and combined methods for the determination of chromium, copper, and nickel in honey by electrothermal atomic absorption spectroscopy.

In the present work, direct methods for the determination of chromium, copper, and nickel in honey by electrothermal atomic absorption spectroscopy were developed using experimental design as an optimization tool. Once the optimum conditions for the individual methods were established, a direct method for the combined determination of the three elements was optimized using the response surface tool. Palladium was used as chemical modifier in all cases. Honey was diluted in water, hydrogen peroxide, and nitric acid. Triton X-100 was added to minimize the matrix effect and the viscosity of the sample. The RSD (better than 10%) and the analytical recovery (98-103%) were acceptable for all of the developed methods. Calibration graphs were used in the four methods to determine the concentration of the analytes in the sample. The detection limits of the combined method (0.21, 0.35, and 0.37 microg L(-)(1) for Cr, Cu, and Ni, respectively) were similar to those obtained for the individual methods (LOD = 0.17, 0.21, 0.33 microg L(-)(1) for Cr, Cu, and Ni, respectively). The direct-combined proposed method has been applied to the determination of chromium, copper, and nickel content in representative honey samples from Galicia (northwestern Spain). The concentrations found in the analyzed samples were in the range of (5.75 +/- 0.64)-(26.4 +/- 0.38) ng g(-)(1) of Cr, (79 +/- 7.8)-(2049 +/- 80) ng g(-)(1) of Cu, and (12.6 +/- 1.36)-(172 +/- 6.88) ng g(-)(1) of Ni.

Chromium↗
PubMed2005

[Addison's disease: the challenge of an early diagnosis].

Addison's disease is a set of symptoms which is produced due to the destruction of the suprarenal cortex, of a mainly autoimmune origin, on account of the presence of antibodies which attack it. This destruction takes place in a generally slow manner, causing symptoms to appear in an insidious way, added to the fact that these symptoms tend to be unspecific. Therefore it is easy to understand that its diagnosis at an early stage will be very difficult and is often interpreted as another disease. It is only when the deficit is important and adrenal crisis develop that we can reach the right diagnosis in a situation where the death risk is considerably high. We presented a clinical case as an example of what has been described previously. After several months of progressively deteriorating symptoms and several visits to different medical units, the patient is diagnosed as having an adrenal crisis and is immediately admitted to the intensive care unit.

Addison Disease↗
PubMed2001

[Primary actinomycosis of the abdominal wall. Description of 2 cases and review of the literature].

We report two cases of isolated abdominal wall actinomycosis and review 18 previously reported cases to further characterize the clinical findings and the therapeutic management of this syndrome. This diagnosis would be advocated in patients with a palpable abdominal mass of subacute appearance with a previous history of digestive medical illness, diabetes, abdominal surgery, or prolonged IUD use. In contrast with other actinomycosis locations, remarkable data were a more elevated mean age of patients; a female predominance; a prevalent location of mass in abdominal lower left quadrant; and a shorter duration of symptomatology before to diagnosis. The CT is the first choice for imaging study and percutaneous needle aspiration would be recommended for definite diagnosis. The long-term antibiotic therapy, with or without percutaneous drainage, is the first treatment choice because is very effective and made unnecessary a more invasive surgical management. The prognosis is excellent with adequated treatment.

Abdominal Muscles↗
PubMed1994

[Pleural effusion as the only manifestation of cryptococcosis in an AIDS patient].

Cryptococcosis is often seen in immunodeficient patients, including those with AIDS. It usually affects mainly the respiratory tract and central nervous system. We present a rare case of pleural involvement with no sign of disease at other sites. A review of the literature yields only three other similar cases. We discuss the diverse clinical manifestations of cryptococcosis, particularly those found in the respiratory tract.

AIDS-Related Opportunistic Infections↗
PubMedDate not supplied

[Pulmonary mycetoma].

Ten cases of pulmonary mycetoma diagnosed in our service between 1985-1992 were retrospectively studied. Clinical methodology followed in the study is commented and the different therapeutic options are reviewed, so the literature concerning this process. The unspecificity of serum precipitins with Aspergillus is emphasised.

Adult↗