[Effect of elastic stockings on edema related to chronic venous insufficiency. Videocapillaroscopic assessment]. / Effet des bas de compression sur l'oedème de l'insuffisance veineuse chronique. Evaulation par vidéo-capillaroscopie.

AIM: To evaluate the effect of class II (23-32 mm Hg) compression stockings on the edema of the ankle in patients with chronic venous insufficiency (CVI), and to assess the relationship between the microvascular phenomenon and the volume of the leg. MATERIAL AND METHOD: 11 patients (19 limbs, 5 women and 6 men, mean age 57 years) with CVI, CEAP 2-3 were studied through physical examination, Doppler color ultrasound test, measurement of leg volume and videocapillaroscopy. Patients were evaluated before (T0), after 7 days (T1) and 14 days (T2) of daily compression therapy with elastic stockings. Statistical comparisons used the Mac Nemar test for binomial variables and Wilcoxon test for paired quantitative data. RESULTS: All patients experienced significant improvement of symptoms, the volume of the limbs on the average decreased in the first week T0-T1=284.8 cm(3) +/- 307.5 cm(3) (6.27%, p<0.001). During the second week a small increase in volume was observed T2-T1=+ 12.23 cm(3), NS, 0.29%). The width of the capillary halo of edema decreased during the first week by an average of T0-T1=5.77 microm +/- 10.99 microm. During the second week the width of the edema halo continued diminishing, although in smaller proportion (T0-T2=7.89 microm +/- 11.77 microm). CONCLUSION: Daily use of grade II compression stockings induces a reduction in leg volume in patients with CEAP grades 2-3. This improvement of edema is paralleled by a decrease in the size of the pericapillary halo.

Distribution of somatostatin and glucagon immunoreactive cells in the gastric mucosa of some cartilaginous fishes.

The comparative distribution of somatostatin- and glucagon-like-containing cells in the histomorphologically different gastric mucosae of the cartilaginous fishes Heptranchias perlo, Raja asterias, Scyliorhinus canicula, Squatina aculeata, and Torpedo marmorata was immunocytochemically studied to demonstrate a possible interrelationship between these endocrine cells and/or other endocrine or nonendocrine cells. In the gastric mucosa, these open-type glucagon and somatostatin immunoreactive cells show a double localization with different morphology and interrelationships. At the bottom of gastric pits, which corresponds to a proliferative zone, spindle or pear-shaped immunopositive cells appear rather numerously and are often in close proximity to each other. In gastric glands, triangular or oval immunopositive cells never in contact with each other were detected; their numeric ratio seems to be rather constant even if their numeric frequency and distribution vary according to the histomorphological aspect of selachian gastric glands. Glucagon immunoreactive cells seem to be more related to pepsinogenic cells, while somatostatin immunoreactive cells seem to be more ubiquitous. Both cell types can present basal cytoplasmic processes. From our results we can suggest a possible regulative role exerted by these two peptides on gastric secretion and cell proliferation.

Distribution and ontogeny of VIP-like immunoreactivity in the gastro-entero-pancreatic system of a cartilaginous fish Scyliorhinus stellaris.

The presence, distribution and development of vasoactive intestinal polypeptide (VIP)-like immunoreactivity in the gastro-entero-pancreatic system of a cartilaginous fish Scyliorhinus stellaris (L.) was investigated by immunohistochemical methods utilizing mammalian VIP antisera. In the gut VIP-like immunoreactivity was observed in both nerves and endocrine cells. Endocrine cells with VIP-like material were only detected in the intestinal epithelium while nerve fibres containing VIP-like material were noted along the whole gastro-entero-pancreatic system, being more numerous in the pyloric sphincter and in the intestinal portion. Immunoreactive nerve cell bodies were encountered in the stomach and intestinal portions localized in the submucosa and in the myenteric plexus. Intestinal immunoreactive endocrine cells were already present in the first developmental stage considered (embryos aged 4 months). They grow in number and before birth reach a frequency higher than in adults. Nerves and cell bodies showing VIP-like immunoreactivity, appear later, before birth, as a few elements in the smooth muscular layer, but only after birth their distribution and frequency are similar to those found in adults. The faint immunofluorescence shown by the immunoreactive endocrine cells and their developmental pattern, which is always different from that observed in nervous elements, suggest the presence of at least two VIP-like substances in the gastro-entero-pancreatic system of S. stellaris.