Introduction/Aim. +Gz acceleration is unique dynamic stress to organism. Development of this occurrence depends not only to magnitude of acceleration but to onset rate and duration too (1). The most of former researches pointed to +Gz stress as significant stress to basic physiological mechanisms like cardiovascular and respiratory system. The aim of our study was to examine responses of neuroendocrine and immune system to +Gz stress. Method. Examination was performed in two inbred strains of rats Albino Oxford (AO) and Dark Agouti (DA). AO, n=45 and DA, n=60, male, 9-11 weeks old. Experimental animals were subjected to the Test of linear increase of +Gz acceleration (peak 7G, onset rate 0.1 g/s) at the Institute of aviation medicine of Military Medical Academy. Before examination, animals fasted 24 hours. Control group were rats which did not subjected to +Gz acceleration. After the animals were sacrificed we punctured blood from abdominal aorta to examine plasma and serum and extirpated thymus and spleen to be examined, too. In wish to examine effects of +Gz stress to polarization of Th immune response we determined concentrations of cytokines (IFN-ã and IL-4) in the culture of spleen cells. Results. The level of cytokines in the culture of spleen cells stimulated with Con A, isolated from animals (experimental and control group) 3 and 24 hour after +Gz exposure and level of cytokines determined in supernatants, showed statistical significance as it presented on the graphics. Conclusion. According to our research obtained on animals we can conclude that +Gz acceleration in the early period (after 3 hours) decreased IFN-ã in the culture of spleen cells. AO rats showed difference compared to DA rats in reaction to +Gz stress. AO rats had increase in IL-4 in the culture of spleen cells and higher decrease of IFN-ã and emphasized polarization of Th1/Th2 in course to Th2. After 24 hours of exposure to +Gz stress we observed increase of IFN-ã (DA) and increase of IL-4 (AO).

Serious metabolic diseases and infections, such as sepsis, may lead to the occurrence of stress ulcers. Unfortunately, in our hospitals, the stress ulcer is often diagnosed as a separate disease, not as the manifestation of the existing stress status of the patient. Therefore, the goal of this pilot study was to establish the incidence of stress ulcers in sepsis patients treated at the Infective Disease Clinic. Patients treated at the Military Medical Academy Infective Disease Clinic during 4 month period, who experienced acute bleeding, verified gastroscopically, were subjected to retrospective analysis. Five out of 344 hospitalized patients had serious hemorrhages. Out of a total of 21 patients diagnosed with bacterial sepsis, acute gastric bleeding was verified gastroscopically in three, or 14.28 percent. To obtain more data, prospective long-term study, wich would include greater number of septic patients, should be conducted.

+Gz acceleration is unique dynamic stress to organism. Development of this occurrence depends not only to magnitude of acceleration but to onset rate and duration too. The most of former researches pointed to +Gz stress as significant stress to basic physiological mechanisms like cardiovascular and respiratory system. The new study was to examine responses of neuroendocrine and immune system to +Gz stress.

Klebsilla pneumoniae is the very rarely cause of osteomyelitis in adults, most commonly in the immunocompromised patients with extra-sceletal infections. Successful therapy of chronic refractory osteomyelitis included different orthopaedic methods of treatment, the long time antibiotics therapy and more and more freaquently treatment with adjuvant hyperbaric oxygenation. We report an uncommon case of patient with chronic postraumatic osteomyelitis cased by dissemination of Klebsilla pneumoniae from urinary tract to place of osteosinthesis of femur. Treatment of this case of chronic refractory Klebsilla osteomyelitis finished successfuly after treatment with hyperbaric oxygenation two years from start of desease.