Background: The aim was to compare early biochemical and histological osseous healing of chronic mandibular defects regenerated with bovine bone substitute with and without collagen membrane in vivo.Methods: Eight weeks after formation of a lateral full-thickness perforating bone defect in the mandible of 40 rabbits, bovine bone substitute with (“+”;n = 20) and without (“-”;n = 20) collagen membrane was applied. Blood and bone was collected 24, 72 h, 7, 14 and 21 days after surgery. Total acid phosphatase, bone acid phosphatase, total alkaline phosphatase and bone alkaline phosphatase activities were compared between groups. Formation of new bone was quantified histologically for all time points.Results: Twenty-four hours after surgery, bone alkaline phosphatase was significantly elevated in “+” group when compared to “-” (p=0.012). After 72 hours, all bone turnover markers except for total acid phosphatase (p=0.078) where significantly elevated in “+” (allp < 0.05). Fourteen days after surgery, the significant highest values for all bone turnover markers were detected in “-” (allp < 0.05). A significant difference in favor of group “-” could also be detected after 3 weeks in terms of both acid phosphatases (p < 0.05). In histology, no significant differences could be detected.Conclusion: Bone regeneration with bovine bone substitute material and collagen membrane shows a significantly earlier bone remodeling activity but does not seem to influence formation of new bone in histological samples.

Cancer is a global medical problem and, despite research efforts in the field of tumor treatment, there is currently a shortage of specific anticancer drugs. Most anticancer drugs show significant side effects. The liver is the organ that has central functions in drug metabolism, being a major target of the harmful action of anticancer compounds. In this context, it is essential to evaluate the cytotoxic effects of potential anticancer substances. Therefore, hepatotoxicity and hepatocyte viability were determined in vitro to evaluate the action of seven new local thiosemicarbazide coordination compounds (CCT) on normal liver cells. Doxorubicin was used as a reference substance. The control group consisted of hepatocytes not exposed to CCT action. The cell viability of hepatocytes treated with CCT decreased significantly by 5–12% compared to the control, but was statistically significantly higher by 5–14% compared to doxorubicin, except after CMD-8 and CMT-67 influence, when it does not change. Thus, new local CCT had a selective effect on hepatocytes in vitro and were less hepatotoxic compared to doxorubicin, which may be the basis for further study of its potential in anticancer drugs.

Objective: To analyze the glutathione antioxidant defense system changes in the tear and serum of patients with hypertensive retinopathy (HR) and to establish whether there is an interdependence between their levels and HR degree.

Background: In the current proposal, we used the intralipid in standard therapy against COVID / 19 as an energy carrier for parenteral nutrition in critically ill patients. In patients receiving intralipid, there was an accelerated recovery of the lungs, a decrease in markers of endogenous intoxication (EI), tissue hypoxia and an improvement in general condition. In the absence of Intralipid in the intensive care unit, there was a slow recovery of the lungs and a more prolonged improvement in the general condition with the preservation of EI markers (cytolytic enzymes, C-reactive protein, platelets) and tissue hypoxia (pCO2 AV> 6 mm Hg). Collectively, Intralipid has been seen in the targeted LPO treatment plan for oxidative and nitro-galogenic stress in SARS-Cov2 / COVID / 19 patients.

Background. Hypertension (HTN) is one of the leading causes of morbidity and mortality worldwide. A prompt diagnosis and treatment of hypertensive retinopathy (HR), the leading complication of HTN is pivotal for a better visual outcome. Increased blood pressure on its own cannot fully clarify the development of retinal alterations, therefore an additional pathogenetic mechanism, such as oxidative stress, might be inquired. The aim of the study was to evaluate the changes in the level of ischemia modified albumin (IMA) in the serum and tears of HR patients in order to establish the predictive value of IMA for the HR progression. Methods. Serum and tear samples for the measurement of IMA were collected from 90 patients detected primarily with HR, who were not taking any antihypertensive or other drug that could influence the results of the study, divided according to the Keith-Wagener classification into GI ‒ 36 patients with HR grade I, GII ‒ 35 with HR grade II and GIII ‒ 19 with HR grade III. Serum and tear IMA levels were assessed using the Co2+ binding method (Gudumac V. et al., 2009) and expressed as median and interquartile range. Kruskal-Wallis and Mann-Whitney nonparametric tests were used to compare the groups and the Spearman correlation coefficient was calculated (SPSS 23.0), with p<0.05 being statistically significant. Results. The groups showed a statistically significant difference in serum IMA (p=0.006), the values increasing in parallel with the progression of HR. The serum IMA level in GII increased compared to GI (+3%; 239.06 µM/L (IQR 75.58) vs 231.77 µM/L (IQR 104.09), p=1.00), as well as in GIII patients compared to GII (+17%; 277.67 µM/L (IQR 88.72) vs 239.06 µM/L (IQR 75.58), p=0.04). There were no differences in IMA content (p=0.160), between groups in the tears. No correlations were found between serum and tear IMA levels (p=0.134), but serum IMA showed a significant moderate strength, positive correlation with the degree of HR (r=0.307**, p=0.003). Conclusion. A progressive enhancement in serum IMA level as HR advanced was identified. Thereby, the results suggest the potential relevance of serum IMA as a sensitive and early biomarker useful for grading and optimal treatment of the patients with HR.

The purpose of this paper was to study the relationship between dental caries damage and markers of phosphocalcic metabolism in children with severe diseases of the central nervous system (CNS) caused by perinatal hypoxia. To highlight the impact of metabolic disorders on the susceptibility to dental caries of children with severe CNS disease, were studied the biochemical markers of redox processes, bone and phosphocalcic metabolism in blood serum and oral fluid (OF). The study found a chronic disorder of redox processes, phosphocalcic metabolism at the macro and local level that significantly influences the degree of dental caries of children with severe CNS pathology confirms by: increased lactate level and lactate dehydrogenase (LDH) activity; reduced thermolabile alkaline phosphatase (TLAP) activity in the blood serum and OF, as well as a statistically significant increase in tartrate–resistant acid phosphatase (TRAP) activity in the blood serum as the statistically significant decrease, below the norm, of the level of Ca, Mg and vitamin D3 in the blood serum as well as the significant reduction of the Ca/Pi ratio in OF. Conclusions: the detection in children with CNS diseases caused by perinatal hypoxia of important caries risk factors and indicators of aggressive evolution of DC such as increased concentration of anaerobic glycolysis products and disorders of phosphocalcic metabolism, requires the deepening of interdisciplinary studies and the complex approach in the planning of preventive measures, developed by multipurpose teams of specialists.