Despite significant advances in the prevention and treatment of heart failure (HF), the prognosis in patients who have been hospitalised on at least one occasion due to exacerbation of HF is still poor. Therefore, a better understanding of the underlying pathophysiological mechanisms of HF is crucial in order to achieve better results in the treatment of this clinical syndrome. One of the areas that, for years, has aroused the interest of researchers is the activation of the immune system and the elevated levels of biomarkers of inflammation in patients with both ischaemic and non-ischaemic HF. Additionally, it is intriguing that the level of circulating pro-inflammatory biomarkers correlates with the severity of the disease and prognosis in this group of patients. Unfortunately, clinical trials aimed at assessing interventions to modulate the inflammatory response in HF have been disappointing, and the modulation of the inflammatory response has had either no effect or even a negative effect on the HF prognosis. The article presents a summary of current knowledge on the role of immune system activation and inflammation in the pathogenesis of HF. Understanding the immunological mechanisms pathogenetically associated with left ventricular remodelling and progression of HF may open up new therapeutic possibilities for HF.

Diabetes is a key independent risk factor in the development of heart failure (HF) and a strong, adverse prognostic factor in HF patients. HF remains the primary cause of hospitalisation for diabetics and, as previous studies have shown, when HF occurs in these patients, intensive glycaemic control does not directly improve the prognosis. Recent clinical studies assessing a new class of antidiabetic drugs, sodium-glucose cotransporter 2 inhibitors (SGLT2is) showed some unexpected beneficial results. Patients treated with SGLT2is had a significant decrease in both cardiovascular (CV) and all-cause mortality and less hospitalisations due to HF compared to those given a placebo. These significant clinical benefits occurred quickly after the drugs were administered and were not solely due to improved glycaemic control. These groundbreaking clinical trials’ results have already changed clinical practice in the management of patients with diabetes at high CV risk. These trials have triggered numerous experimental studies aimed at explaining the mechanisms of action of this unique group of drugs. This article presents the current state of knowledge about the mechanisms of action of SGLT2is developed for the treatment of diabetes and which, thanks to their cardioprotective effects, may, in the future, become a treatment for patients with HF.

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Purpose: Innovative biomedical filaments for 3D printing in the form of short and biodegradable composite sticks modified with various additives were used to prepare biomaterials for further nasal implants. As the respiratory tract is considered to be potentially exposed to contamination during the implantation procedure there is a need to modify the implant with an antibacterial additives. The purpose of this work was to analyze the effect of biodegradable polymer – polycaprolactone (PCL) modification with various additives on its antibacterial properties. Methods: PCL filament modified with graphene (0.5, 5, 10% wt.), bioglass (0.4% wt.) and zinc-doped bioglass (0.4% wt.) were used to print spatial biomaterials using FDM 3D printer. Pure polymer biomaterials without additives were used as reference samples. The key task was to assess the antimicrobial impact of the prepared biomaterials against the following microorganisms: Staphylococcus aureus ATCC 25293, Escherichia coli ATCC 25922, Candida albicans ATCC 10231. Results: The research results point to a significant antibacterial efficacy of the tested materials against S. aureus and C. albicans, which, however, seems to decrease with increasing graphene content in the filaments. A complete lack of antibacterial efficacy against E. coli was determined. Conclusions: The tested biomaterials have important antibacterial properties, especially against C. albicans. The obtained results showed that biomaterials made of modified filaments can be successfully used in implantology, where a need to create temporary tissue scaffolds occurs.

Structural changes within the placenta are observed in the course of pathological pregnancy. The aim of the study was to perform initial assessment of morphological features of placenta. The analysis was conducted by Scanning Electron Microscopy. Samples of placenta of women who delivered neonates appropriate for gestational age were characterized by a homogenous surface texture with natural corrugation. The surface of IUGR placenta from the group of mothers with pregnancy induced hypertension was definitely heterogeneous - noticeable swelling of tissue surface was observed. Samples from LGA group also demonstrated a number of surface bulges and heterogeneities which were, nonetheless, characterized by a certain repeatability.

Job satisfaction and subjective well-being remain in strong relationship, and although it is difficult to determine the direction of these relationships, they seem to have a significant impact on each other.

The ortho-silicic acid (H4SiO4) plays an essential role in delivering silicon to body cells and the monomeric ortho-silicic acid is the most bioavailable source of silicon for humans. This study reveals that the ortho-silicic acid (OSA) modifies the tissue of a healthy and pathological hypotrophic amnion, thermal burn skin and, additionally, the OSA-incubated serum. Changes in the tissue modified by the ortho-silicic acid were traced on the molecular level with the use of FTIR spectroscopy. The most interesting area of tissue modification with the use of OSA acid solutions is the appearance of the 1085 cm–1 Si–O–Si band which is optimal for the 1:6000 OSA concentration. Microbiological studies aiming at anticipating anti-inflammatory and antibacterial bioactivity revealed that the skin samples and amniotic samples were characterised by good resistance to the following bacteria: Enterococcus faecalis, Staphylococcus aureus and Escherichia coli (medium growth inhibition zone: 0.5–4 mm). The present study determined the concentration and the composition of the solutions to be used in the future to create innovative modifiers (active dressings or new dietary supplements) enhancing tissue regeneration.

The impact of diet on the health of pregnant women remains an unresolved clinical issue. The aim of this study was to determine and compare the dietary intake of mothers who gave birth to full-term infants whose sizes were appropriate for gestational age (AGA), preterm birth (PTB) infants, and full-term infants who were small for gestational age (SGA). Of the 103 women who participated, 50 gave birth to AGA infants, 30 gave birth to PTB infants, and 23 gave birth to SGA infants. The composition of each woman's diet was analyzed using a questionnaire completed 3 days post-childbirth. Findings revealed a number of differences between the groups. The percentage of energy obtained from fat and the calcium and lactose intake was all highest in Group AGA. The largest number of differences in intake of fatty acids (FAs) was observed among short- and medium-chain FAs. Lower levels of C4:0, C6:0, C8:0, C10:0, and C14:0 were observed in the diets of women in Group PTB than in Group AGA. C18:0 intake was also lower in Group PTB than in Group AGA. The reduced short-, medium-, and long-chain FA intake by women in Group PTB also affected the total saturated FA intake, which was lowest in that group. These findings suggest that, even in mothers giving birth to children with only slight deviations from normal birth weight or normal gestational duration, differences in diet can be identified, particularly regarding FA content, which may affect the health of the newborn.