Breeding and day resting habitats of Anopheles dirus in Assam, India

Longitudinal surveys at monthly frequency were carried out during 1995-1996 in a forest fringed village of district Dibrugarh, Assam to decipher the breeding and day resting habitats of Anopheles dirus. It regularly bred in small, shallow, rain filled, transient, shady or partly shady puddles/ground pools in the rainy months and in the perinneal streams in the adjoining forest of the village during dry months. In pools, the degree of interspecific association (0.238 +/- 0.174) and index of association (0.428) of An. dirus breeding was highest with Aedes caecus. An. dirus was completely exophilic and rested during day time in the forest mostly on tree trunks upto the height of 4-5 feet from the ground in dark moist niches avoiding direct sun light.     

Enhanced endothelin-mediated coronary vasoconstriction and attenuated basal nitric oxide activity in experimental hypercholesterolemia

Matrix metalloproteinases (MPs) constitute a family of proteolytic enzymes (proteases) that degrade extracellular matrix (ECM) and promote the local or metastatic potential of carcinoma cells, and whose action is restrained by special inhibitors (metalloproteinase inhibitors; MIs). We assessed the role of the MPs stromelysin-3 (STR-3), putative metalloproteinase-1 (PUMP-I), and the gelatinases of molecular weights 72 kDa and 92 kDa, as well as the role of their inhibitors tissue inhibitor of metalloproteinase-1 (TIMP-1) and TIMP-2, as markers of metastatic potential in 25 fresh biopsies of squamous-cell lung carcinomas (SCLCs). We examined levels of messenger ribonucleic acid (mRNA) expression for these MPs and inhibitors through Northern blot analysis in 10 carcinomas of high-to-moderate differentiation without lymph-node involvement, and in 15 infiltrative carcinomas of moderate-to-low differentiation with lymph-node involvement. Five cases with significant epithelial atypia and five samples with normal mucosa were used as controls. Expression of STR-3 and TIMP-2 was also assessed immunohistochemically with the avidin-biotin-complex (ABC) technique. We noticed a progressive increase in the expression levels of MPs, especially of STR-3, and of TIMP-2, from the stage of epithelial atypia to the detection of carcinoma, finding the highest values of these substances among carcinomas of low differentiation with nodal metastases. These findings were also confirmed with immunohistochemical analysis. Our results suggest that there is a significant association of the expression of MPs and MIs with both the local and metastatic potential and the degree of cellular differentiation of SCLC, and that this association is clinically important because of its prognostic and therapeutic implications.     

Sagittal sinus thrombosis after closed head injury

We describe a patient with trisomy 8 mosaicism followed through a sixth pregnancy and discuss issues in phenotypic and genotypic variability, the risk for neoplasia, and reproductive risks.     

The management of diabetes in pregnancy

The aim of the diabetes specialist is to provide a service to the pregnant diabetic woman so that she will present to her obstetrician with such well-controlled plasma glucose levels that her pregnancy will proceed without any diabetes-related problem, and she will be delivered of a normal baby, of normal size, at the normal full-term gestation, by the normal route. There are some problems in achieving this aim. The exact definition of hyperglycaemia in pregnancy is still a matter of dispute. Screening methods to identify the problem differ widely. Many centres have developed joint diabetes/antenatal clinics, but there are practical problems with such an approach. Pre-pregnancy counselling, and discussion of contraceptive measures is an important task for the diabetologist and requires up-to-date knowledge. Control of plasma glucose requires alteration of insulin doses as pregnancy proceeds. Mothers with retinal, renal or cardiac problems will need special care. The medical problems which develop, and the management of blood glucose during labour and delivery, mean that the diabetes team must be very adjacent to the obstetric service, and a centralised approach offers many advantages. The postpartum state, and the long-term outcome for both mother and baby, remain both an interest and a responsibility for the obstetric physician.     

Diagnosis of pregnancy with a radioreceptor assay for hCG

To date a number of cases of nephrologic syndrome, linked with a recently passed pregnancy or with the use of oral contraceptives, have been described in the literature. Microscopic analyses of the pathological basis of this syndrome are examined, centering on the infarctic nature of the nerve bundles. There is some disagreement on the type of differential treatment indicated. Treatment, which is generally heparin, must depend on the state of advancement of the syndrome. The syndrome is not well understood yet, but should not be considered completely alien.