Occurrence of Foodborne Agents at Food Service Facilities in the Czech Republic.

Contamination of food service facilities in the Czech Republic by foodborne agents was determined. and were detected in almost 50% of samples. The occurrence of and depended on the season of the year.

Efficacy of a 6-month treatment with Daflon 500 mg in patients with venous leg ulcers associated with chronic venous insufficiency.

Aim: Epidemiological data show that standard compression therapy for leg ulceration in chronic venous insufficiency (CVI) often fails to effectively improve patients' condition. This study assesses the contribution of Daflon 500 mg added to conventional therapy in the healing of hypostatic ulcers of CVI patients.

Methods: Patients of about 65 years were included, with ulcers > or = 2 and > or = 10 cm diameter on 1 or 2 limbs, Doppler ankle/arm pressure index > 0.

Cell-mediated immunity in children with Hodgkin's and non-Hodgkin's lymphomas.

Natural killer (NK) cell activity and lymphocyte proliferation to mitogens might to have diagnostic implications that will help to distinguish between benign and malignant lymphadenopathy in children. In addition, we suggest that NK activity and especially the lowering of NK activity after chemotherapy might be of prognostic value in NHL children.

Interleukin-2 activated cells from peripheral blood of patients with systemic lupus erythematosus.

The effect of recombinant interleukin-2 (IL-2) on proliferative and cytotoxic response of peripheral blood mononuclear cells (PBMC) was investigated in a group of 21 patients with systemic lupus erythematosus (SLE). There was a significant decrease in thymidine uptake of peripheral blood mononuclear cells when compared with controls. However, IL-2 induced cytotoxicity was not diminished and minimal frequencies of lymphokine-activated killer (LAK) cells precursors remained in the range of control group.

[Response of peripheral blood lymphocytes to antigenically nonspecific mitogens in systemic erythematosus].

In 24 patients with systemic lupus erythematosus the proliferating response of lymphocytes of the peripheral blood stream to mitogens PHA, ConA and PWM was examined. The spontaneous incorporation of 3H-thymidine was increased in two patients. The mean response to PHA and PWM was reduced, while the response to ConA was within the normal range.