The -675 4G/5G polymorphism at the Plasminogen Activator Inhibitor 1 (PAI-1) gene modulates plasma Plasminogen Activator Inhibitor 1 concentrations in response to dietary fat consumption.

The objective of the study was to determine whether Plasminogen Activator Inhibitor Type 1 (PAI-1) -675 4G/5G polymorphism is associated with the response of functional plasma PAI-1 concentrations to changes in the amount and quality of dietary fat in healthy subjects. PAI-1 is the major inhibitor of fibrinolysis, and a lower level of fibrinolytic activity could be implicated in an increased risk of IHD. Fifty-nine healthy Spanish volunteers (ten 4G/4G homozygotes, twenty-eight heterozygotes 4G/5G and twenty-one 5G/5G homozygotes) consumed three diets for periods of 4 weeks each: a SFA-rich diet (38 % fat, 20 % SFA), followed by a carbohydrate-rich diet (30 % fat, 55 % carbohydrate) and a MUFA-rich diet (38 % fat, 22 % MUFA) according to a randomized crossover design. At the end of each dietary period plasma lipid and functional plasma PAI-1 concentrations were determined. Subjects carrying the 4G allele (4G/4G and 4G/5G) showed a significant decrease in PAI-1 concentrations after the MUFA diet, compared with the SFA-rich and carbohydrate-rich diets (genotype x diet interaction: P = 0.028). 5G/5G homozygotes had the lowest plasma PAI-1 concentrations compared with 4G/4G and 4G/5G subjects (genotype: P = 0.002), without any changes as a result of the amount and the quality of the dietary fat. In summary, no differences in plasma PAI-1 concentration response were found after changes in dietary fat intake in 5G/5G homozygotes, although these subjects displayed the lowest concentrations of PAI-1. On the other hand, carriers of the 4G allele are more likely to hyper-respond to the presence of MUFA in the diet because of a greater decrease in PAI-1 concentrations.

[Characteristics of patients with multiple disease hospitalized in Internal Medicine services]. / Características clínicas diferenciales de los enfermos pluripatológicos hospitalizadosen servicios de Medicina Interna.

INTRODUCTION: Know what proportion of patients hospitalized in the Internal Medicine services have multiple diseases. MATERIAL AND METHODS: We analyzed 400 clinical histories of a random sample of patients admitted to 24 Internal Medicine services of Andalusia. We assessed the diagnostic categories present that make it possible to classify patients as having multiple diseases. RESULTS: One hundred sixty eight patients (42%) were considered as having multiple diseases. The most prevalent diseases in these patients are cardiological and diabetes mellitus. The two main variables that determine that one is a multiple disease patient are age and disease causing the admission. DISCUSSION: A significant percentage of the patients admitted to the Medicine services of the Andalusia public hospitals have multiple diseases.

[Impact of automatized systems in a high resolution model of outpatients clinics]. / Impacto de los sistemas automatizados en un modelo de consulta de alta resolución.

OBJECTIVE: To analyse the impact of computerised systems in Radiology and Laboratory Departments on the reduction in the waiting time of the patients attending to an Internal Medicine outpatient consultation organised in a high resolution model. METHODS: For one year, we studied the delay in diagnostic explorations (laboratory test, simple radiology, ultrasonic diagnostics and brain scanner) that were all applied for and performed in a single day. We compared the traditional organization (n = 312 explorations), in which the results were handed in by hospital auxiliary staff, to a computerised method (n = 457 explorations), which was implemented via our intranet. RESULTS: The global delay decreased 10% in average, the differences being significant only for the variables "brain scanner" (12.7%) and "laboratory" (19%). The average reduction in the waiting time per patient was 11.7%, ranging from 7.8% (when only one exploration was performed) to 13.2% (when 2 explorations were carried out). The percentage of patients who needed to wait more than 3 hours to receive their results also diminished significantly. CONCLUSION: The implementation of computerised systems reduced the waiting time to receive the results of complementary explorations. However, our results were not homogeneous for the different explorations.

Duodenal compression caused by superior mesenteric artery: study of 10 patients.

BACKGROUND: the compression of the third portion of the duodenum by the superior mesenteric artery (aorto-mesenteric clamp) is a rare cause of abdominal pain. Its clinical appearance may range between an asymptomatic and accidental radiological finding and an acute duodenal ileus (superior mesenteric artery syndrome), which requires urgent surgical intervention. METHODS: we revised all of the reports of upper gastrointestinal tract contrast-medium study (which included the duodenum) made in our hospital between May 1999 and April 2002. We analysed the case history of those patients with a radiological image compatible with aorto-mesenteric clamp. RESULTS: of the 1280 studies analysed, 10 of them (0,78%) were compatible with an aorto-mesenteric clamp. The 10 patients were females whose mean age was 25,7 years (range 9-77) that consulted for different abdominal discomfort. The symptoms of the 9 youngest patients were not typical of duodenal obstruction and their evolution was favourable. In the eldest patient, the clinical data were compatible with a mesenteric superior artery syndrome, although a subsequent study showed the presence of a colon adenocarcinoma. CONCLUSIONS: the aorto-mesenteric clamp is a rare radiological finding (<1 %) which does not always justify the supported clinical data. In our series, 9 cases were considered non-obstructive aorto-mesenteric clamps, although some of them showed pathogenical factors (scoliosis and thinness). The superior mesenteric artery syndrome should be considered as a diagnosis of exclusion after performing an adequate clinical study when the situation of the patient requires it.

[Gaucher's disease. Report of 4 cases]. / Enfermedad de Gaucher. Aportación de 4 casos.

Gaucher's disease is a rare condition caused by a deficiency in the lysosomal enzyme called beta-glucocerebrosidase (GBA). The objective of our work was to analyse the clinical, diagnostic and therapeutic characteristics in a group of four patients with Gaucher's disease type 1. The advantages of the new diagnostic and therapeutic techniques are stressed. In all cases the diagnosis was made by means of cyto-histological examination and enzymatic measurement of the beta-glucocerebrosidase activity. A genetic study and genotype determination was made in the four cases. A questionnaire was administered to patients to evaluate their life quality applying the SF36 questionnaire adapted to the Gaucher's disease. All subjects have received enzymatic replacement therapy with the recombinant enzyme imiglucerase (Cerezyme Corporation) with a satisfactory clinical course. Interestingly, eosinophilia was present in one patient, which disappeared after treatment.