Adsorption of Co(II) ions using Zr-Ca-Mg and Ti-Ca-Mg phosphates: adsorption modeling and mechanistic aspects.

The environmental pollution by toxic Co(II) ions had a negative impact on living organisms and water resources. The amorphous Zr-Ca-Mg and Ti-Ca-Mg phosphates with varied Zr and Ti content with the mesoporous structure (A = 19-232 m/g, V = 0.075-0.

Impact of pathogen reduction methods on immunological properties of the COVID-19 convalescent plasma.

Background And Objectives: COVID-19 convalescent plasma is an experimental treatment against SARS-CoV-2. The aim of this study is to assess the impact of different pathogen reduction methods on the levels and virus neutralizing activity of the specific antibodies against SARS-CoV2 in convalescent plasma.

Materials And Methods: A total of 140 plasma doses collected by plasmapheresis from COVID-19 convalescent donors were subjected to pathogen reduction by three methods: methylene blue (M)/visible light, riboflavin (R)/UVB and amotosalen (A)/UVA.

[Long-term dental interventions in mentally retarded children under general anesthesia with sevoflurane].

Dental procedures in mentally retarded children is challenging for both dentist and for anesthesiologist. The aim of the study was to evaluate the efficacy and safety of dental care procedures under general anesthesia with sevoflurane by means of laryngeal mask in mentally retarded children. The randomized controlled study included 65 mentally retarded children with ASA 2-3 who underwent dental treatment.

Serum procalcitonin is a sensitive marker for septic shock and mortality in secondary peritonitis.

Background: Serum procalcitonin (PCT) is considered to be a sensitive marker for the early recognition of severe infection. The aim of this study was to review the diagnostic accuracy of serum procalcitonin levels to predict the risk of septic shock and mortality in patients with secondary peritonitis.

Methods: We carried out a retrospective review of patients (November 2010 to November 2012) admitted to the surgical intensive care unit (ICU) with secondary peritonitis classified into localised peritonitis (LP) or diffuse peritonitis (DP) groups.

Oral feeding in necrotizing pancreatitis.

Background: Restoration of gastrointestinal function is a crucial determinant of favorable outcome in severe acute pancreatitis (SAP). The purpose of this study was to retrospectively review our experience with early oral feeding in patients with the necrotizing form of SAP. Over the last 10 years, we have routinely gradually increased oral feeds in order to restore gastrointestinal function.

Focused open necrosectomy in necrotizing pancreatitis.

Background: The control of sepsis is the primary goal of surgical intervention in patients with infected necrosis. Simple surgical approaches that are easy to reproduce may improve outcomes when specialists in endoscopy are not available. The aim of the present study was to describe the experience with a focused open necrosectomy (FON) in patients with infected necrosis.

Early continuous veno-venous haemofiltration in the management of severe acute pancreatitis complicated with intra-abdominal hypertension: retrospective review of 10 years' experience.

Background: Conservative treatment of patients with severe acute pancreatitis (SAP) may be associated with development of intra-abdominal hypertension (IAH), deterioration of visceral perfusion and increased risk of multiple organ dysfunction. Fluid balance is essential for maintenance of adequate organ perfusion and control of the third space. Timely application of continuous veno-venous haemofiltration (CVVH) may help in balancing fluid replacement and removal of cytokines from the blood and tissue compartments.

Phagocytic activity of alveolar macrophages in the presence of liposomal "biene".

Phagocytic activity of alveolar macrophages isolated from rat bronchoalveolar lavage fluid was studied during their reaction with multilamellar liposomes containing biene (a complex of unsaturated fatty acids). Liposomes with incorporated biene significantly stimulated phagocytic activity of freshly isolated macrophages and primary culture of these cells (judging from the increase in phagocytic index and phagocytic number). A quantitative relationship between the phagocytic number and phagocytic index, on the one hand, and the concentration of liposomal biene, on the other, was detected.

[Fatty acid complex "bien" incorporation into liposomes multilayered].

The conditions of fatty acid complex "bien" incorporation into multilayered liposomes prepared by mechanical dispersion techniques (vortexing) have been investigated. Drug incorporation depends on the lipid composition used to prepare the vesicles, overall lipid and "bien" concentrations and the presence of an antioxidant. Vortexing and incubation regimes for the homogeneous liposomal suspension were determined.

Activation of molecular oxygen by infrared laser radiation in pigment-free aerobic systems.

With the goal of mimicking the mechanisms of the biological effects of low energy laser irradiation, we have shown that infrared low intensity laser radiation causes oxygenation of the chemical traps of singlet oxygen dissolved in organic media and water saturated by air at normal atmospheric pressure. The photooxygenation rate was directly proportional to the oxygen concentration and strongly inhibited by the singlet oxygen quenchers. The maximum of the photooxygenation action spectrum coincided with the maximum of the oxygen absorption band at 1270 nm.

[Bactericidal and bacteriostatic properties of Acryloxide copolymer in articular endoprosthesis].

Based upon bacteriological investigations the authors have proved bacteriostatic and sometimes bactericidal effects of the polymer material "Acryloxide". Endoprostheses made of it do not require sterilization which was demonstrated in operations of endoprosthesis of joints on 225 patients.

[Spectral properties and structure of bacteriopheophytin a dimer].

In alcohol-glycerol solutions of bacteriopheophytin alpha takes place dimer formation with a long wave absorption band at 857 nm, the dimerization constant enhances with glycerol content increasing in solution. The measurement of absorption, fluorescence and CD spectra allowed to characterize the main electronic transitions (Qy, Qx, Bxy) of the dimer. For the first electronic transition (Qy) of the dimer as compared to the monomer the same oscillator strength, spectral bands narrowing of splitting components and significant increase of rotation strength in CD spectrum were found.

[Comparative study of bacteriopheophytin a and b aggregation].

Aggregation of bacteriopheophytins a and b (BPh) in ethanol--glycerol solution and a comparison of spectral properties of obtained aggregated pigment forms were studied. The dependence of aggregation process on percentage of glycerol and pigment concentration on alcohol solution was studied. The aggregation of BPh was followed by very strong deformation of electron absorption and circular dichroism (CD) spectra.