Vitamin Preparations Research Articles

METOVITAN INCREASES THE RESISTANCE OF THE BODY TO HYPOXIA

Aim. To study the efficacy of the vitamin preparation Metovitan and multivitamin preparation Decamevit in preventing the development of oxidative stress in the development of oxidative stress in rat tissues and their survival under hypoxic hypoxia. Methods. Experiments were performed on Wistar rats, 160-220 g. A model of hypoxic hypoxia was induced by lifting the rats in a barocamp to a conditional altitude of 11 thousand meters above sea level (pressure 190 mm Hg). Tissue metabolite concentrations and enzyme activities were measured using conventional biochemical methods. Results. The results of the study showed that the positive effect of Metovitan, which contained methionine and vitamins E, B1, and B3, on many indicators, including the activity of antioxidant defense enzymes, was significantly higher than the effect of Decamevit, which contained the same components plus vitamins A, B2, B6, B9, B12, vitamin C, and the bioflavonoid rutin. The survival time of rats treated with Metovitan before the experiment was one and a half times longer than that of Decamevit. Conclusion. A preparation containing a limited amount of vitamins acting synergistically on narrow links of cellular metabolism was more effective in preventing oxidative stress than a conventional multivitamin preparation.

Possibilities of comprehensive rehabilitation in combination with vitamin and mineral preparations for patients who have undergone hospitalization COVID-19 form

Relevance. Rehabilitation of patients who have suffered severe and moderate COVID-19 is an urgent task of modern medicine. Today, the most important are rehabilitation measures for people who have undergone hospitalization. The goal is to study. The possibility of comprehensive rehabilitation of patients who have suffered hospital-acquired COVID-19, incl. using vitamin and mineral preparations. Materials and methods. A total of 195 consecutively recruited patients were examined. There were 2 groups of patients: with moderate severity (111 (56.92 %)) and severe severity (84 (43.0 %)). After discharge from the hospital, patients were randomly divided into 4 groups: Group A — 47 patients who received a rehabilitation complex, including therapeutic physical education (therapeutic and breathing exercises), physiotherapeutic treatment (inhalation and respiratory support) in accordance with the recommendations of the Ministry of Health Russian Federation, drug therapy in accordance with the recommendations of the Ministry of Health of the Russian Federation (anticoagulant therapy, if indicated — HMG-CoA reductase inhibitors, oral hypoglycemic therapy, ACE inhibitors and sartans); Group B — 49 patients who, in addition to the above methods, received vitamin preparations (vitamin D 1500 IU/day and vitamin C 30 mg/day); Group B — 48 patients who, in addition to the above methods, received mineral preparations (zinc 15 mg/day and selenium 70 mcg/day); Group D — 51 patients who, in addition to the above methods, received vitamins and mineral preparations in the previously indicated doses for groups B and C. The dynamics of mineral metabolism parameters were assessed. Results. During the examination of patients upon discharge from the hospital, a change in the content of macroelements was established: an increase in the level of potassium, sodium, sulfur and a decrease in calcium, as well as microelements: an increase in antimony and barium and a decrease in zinc, selenium and silicon. The most pronounced positive effect in terms of increasing the levels of essential macro- and microelements in the body (zinc, selenium and iron) in patients who had hospitalized COVID-19 was observed when using rehabilitation complexes in combination with vitamin and mineral preparations.

Antioxidant Effectiveness Test of Kapok Leaf Extract Moisturizer (Ceiba Pentandra (L.) Gaertn.) with DPPH Method

Dry skin can often cause psychological discomfort. Moisturizer is a preparation that is used to improve dry skin. Kapok plant (Ceiba pentandra L. Gaertn) can be used as an active ingredient of moisturizer and can be used as a treatment, where the chemical content in kapok leaves are flavonoids, saponins, alkaloids, phenolic compounds, tannins and terpenoids as antioxidants. This study aims to determine the antioxidant activity of kapok leaf extract and moisturizer preparations with DPPH method using UV-Vis spectrophotometer, physical quality of preparations and antioxidant activity of moisturizer preparations using DPPH method. Kapok leaf extract was made in various concentrations, namely 20 ppm, 40 ppm and 60 ppm. The IC50 value of kapok leaf extract is 67.4007 ppm which has strong antioxidant activity. Then variations in the concentration of kapok leaf extract were put into the formulation of moisturizer preparations, the results of moisturizer preparations of kapok leaf extract and vitamin C met the requirements of the physical quality test. The moisturizer preparation was continued and tested for antioxidant activity using the DPPH method with ascorbic acid as a comparison. The results of the IC50 value on the kapuk leaf extract moisturizer preparation are 110.065 ppm which is classified as having moderate antioxidant activity and while the vitamin C moisturizer preparation is 9.8417 ppm which is classified as having very strong antioxidant activity.

CLINICAL-EXPERIMENTAL JUSTIFICATION OF PATHOGENETIC TREATMENT OF DIABETIC DAMAGE OF THE PERIPHERAL NERVOUS SYSTEM

Background. Diabetes mellitus is a chronic endocrinological disease that, in addition to the somatic sphere, affects all departments and levels of the nervous system. At the same time, its prevalence is increasing every year. Most often, neurological manifestations concern the peripheral nervous system in the form of sensory-motor polyneuropathies. Aim: To clinically and experimentally study the effectiveness of the complex scheme of prevention and treatment of diabetic polyneuropathy, which is composed taking into account the pathogenetic mechanisms of the studied pathology. To find out the clinical features of the course of the disease and electrophysiological patterns. Under experimental conditions, to study the dynamics of changes in the indicators of sensitivity (nociception) and motor function of peripheral nerves in case of diabetic nerve damage. Materials and methods. In the work, streptozotocin-induced diabetic polyneuropathy was reproduced in rats in a chronic experiment. The formation of the latter was confirmed by a morphological study of the sciatic and tail nerves with the determination of edema and degeneration of Schwann cells, as well as segmental demyelination and spasm of precapillary arterioles. Nicergoline, alpha-lipoic acid, group B vitamins, NG-nitro-L-arginine were used for therapeutic or preventive purposes in groups of animals. The speed of conduction of excitation along the tail nerve was studied. In addition, the "hot plate" test was used. In the clinical part of the work, 43 patients with diabetic polyneuropathy were examined. In addition to the clinical and neurological examination; assessed the severity of polyneuropathies according to the scale of neuropathy symptoms, as well as stimulation electroneuromyography.The patients were divided into groups: the first received a developed treatment complex, the second received conventional treatment. Results. The obtained data indicate the feasibility of using direct (NG-nitro-L-arginine) and indirect (nicergoline - "Sermion" and LC - "Alpha-lipon") inhibitors of nitric oxide synthesis, as well as the complex of vitamin preparations "Neovitam", taking into account their reparative and antioxidant properties, in the clinic in patients with diabetic polyneuropathy with a therapeutic, and possibly preventive purpose. The positive experimental and clinical effects of the developed DPP prevention and treatment scheme are associated with the development of antioxidant and reparative effects, as well as the restoration of the myelin sheath of peripheral nerves, since demyelination contributes to the development of the clinic of polyneuropathy. Conclusion. Patients with diabetic polyneuropathy who received a complex treatment scheme achieved probable clinical, neurological and neurophysiological improvement. On the basis of experimental research, the probable mechanisms of this kind of improvement due to the restoration of myelin, blood circulation, antioxidant and reparative effects have been proven.

INOSITOLS: BIOLOGICAL ROLE AND APPLICATION, METHODS OF EXTRACTION FROM PLANT RAW MATERIALS AND DETERMINATION, BIOTECHNOLOGICAL SYNTHESIS

The aim of the work was to review modern extraction, detection and quantification analytical methods of inositols and their derivatives. Methods. Inositols are extracted from vegetable raw materials by methods of liquid extraction, under pressure, microwave extraction and supercritical fluid extraction. Quantitatively analyzed by methods of gas and liquid chromatography with preliminary derivatization. The structure of inositols can be determined by the NMR spectroscopy. Results. Inositols and their derivatives are biologically active compounds, wich are involved in the egulation of the intracellular calcium level, the transmission of hormonal signals, the breakdown of fats and the reduction of cholesterol in the blood, the modulation of the neurotransmitters activity, etc. Inositols are used in the production of vitamin preparations. The main source for inositols extraction is vegetable raw material, namely alfalfa, as well as wheat sprouts, grapefruit, hazelnuts and others. In the paper, the methods of inositols extraction with organic and inorganic solvents, including the use of a Soxhlet apparatus, liquid extraction under pressure, microwave extraction and supercritical fluid extraction are considered. The procedure of preliminary sample preparation and polyols derivatization for their further separation and quantitative determination is described. Modern chromatographic methods of polyols identification and quantitative determination are analyzed. The possibility of using 1H, 13C and 31P NMR spectroscopy to identify the structure of inositols and their derivatives is described. Conclusions. Inositols are biologically active compounds of a wide spectrum of action, therefore there is an urgent need to develop biotechnological processes for their production and extraction from plant raw materials and microorganisms.

First-Order Derivative Spectrophotometry for Simultaneous Determination of Vitamin C and Nicotinamide: Application in Quantitative Analysis of Cocrystals.

Vitamin C (l-ascorbic acid, ASC) and the amide form of vitamin B3 nicotinamide (NIC) can form cocrystals through hydrogen bonding. Currently, there is a lack of fast and reliable alternatives for precisely quantifying cocrystal components and their purity. Spectrophotometric analysis for quantifying such vitamin preparations is challenging due to overlapping absorbance bands in a narrow wavelength range in the ultraviolet (UV) region. Moreover, ASC undergoes progressive degradation if not diluted in a proper medium, requiring stability during quantitative analysis. This study adopted a fast, simple, and reliable two-component spectrophotometric assay for simultaneously determining ASC and NIC based on the first-order derivative spectrophotometry (FODS) method using sodium oxalate as a stabilizer for vitamin C. The FODS method showed linearity between 2 and 24 μg·mL-1 and good precision. The standard addition method was employed to validate FODS, with high recovery percentages (96.5 to 102.4% for ASC and 95.3 to 101.9% for NIC). The FODS method was successfully applied to quantify ASC and NIC in bulk powder produced by the gas antisolvent method. The proposed method could estimate cocrystal purity through mass balance regarding the expected 1:1 stoichiometry, confirmed by PXRD and DSC. Cocrystal purity determined by the FODS method (58-100%) aligned well with results from LC-MS (62-100%), with an accuracy exceeding 97%. The FODS method is as sensitive and accurate as high-performance liquid chromatography for simultaneously determining vitamin concentrations deriving from cocrystals. However, it is less costly, more efficient, and a suitable alternative to classical solid-state methods for estimating cocrystal purity.

Preparation and Evaluation of Aloe-Vera and Vitamin E Anti-aging cream

Aging is a natural progressive process that leads to aesthetic and functional changes in the skin. Premature aging is also observed at young age around 20 due to pollution, cigarette smoke, sunlight, effects of an unhealthy lifestyle, insufficient nutritional intake, and prolonged illness. The aim of this research work is to formulate and evaluate an herbal antiaging face cream using Aloe-Vera and Vitamin E. Radical scavenging activity of prepared cream was studied using DPPH method and standard ascorbic acid was used. The evaluation test like, Organoleptic Test, pH, viscosity, spreadability, phase separation, homogeneity test, cream type, Draize test and ease to removal test were carried out. The stability study over three week was also executed.

Gayo horse’s estrogen concentration after pospartum silent heat therapy using intramuscularly vitamin A, D, E

Abstract Silent heat is a condition in which livestock does not show symptoms of heat but physiologically estrus occurs due to low concentrations of the estrogen. Vitamins are small organic compounds that are needed by horses for the process of development, reproduction, and activity. Vitamin preparations are easily obtained and economically for breeders. This research aimed to observe differences in estrogen concentrations in postpartum silent heat gayo horses before and after therapy using intramuscularly vitamins A, D, E. Four of six gayo mares suspected of postpartum silent heat after diagnosis using ultrasound were used in this study. Four gayo mares were divided into two groups, the control group (K1, n=1) was only injected with NaCl and the therapy group (K2, n=3) was injected with vitamins A, D, E intramuscularly twice with an interval of one week. Blood plasma samples were collected before and after therapy for 7 days, then stored in the freezer at -20°C for analysis of estrogen concentrations using EIA. Data before and after therapy were analyzed using paired sample t-test and data between groups were reported descriptively. The results showed that the estrogen concentration of postpartum silent heat gayo horses in K1 was not significantly different (P>0.05) before and after NaCl injection (251.71±57.90 vs 255.56±84.14 pg/ml), while there was a significant difference in K2 (P<0.05) before and after vitamin A, D, E therapy (194.82±56.64 vs 557.11±96.55 pg/ml). Descriptively, there were differences in the concentration of the hormone estrogen in K1 and K2 after postpartum silent heat therapy. The conclusion is postpartum silent heat therapy using vitamins A, D, E in gayo horses can increase the concentration of the hormone estrogen in the estrous phase which has an impact on the appearance of estrus symptoms that is more clearly and easily observed by breeders.

Dietary supplement intake in women with breast cancer before and after diagnosis: results from the SUCCESS C trial

BackgroundThere is little evidence that dietary supplements are beneficial for patients with breast cancer; therefore, they are usually not recommended by treatment guidelines. The aim of the present analysis was to assess the prevalence of dietary supplement (DS) intake among women before and after a breast cancer diagnosis.MethodsParticipants in the SUCCESS C lifestyle intervention study, a randomized controlled trial in women with newly diagnosed intermediate- to high-risk breast cancer, completed two questionnaires on dietary supplement intake 24 months (QS1) and 48 months (QS2) after beginning the lifestyle intervention. The study was registered on 12.17.2008 under the EU Clinical Trials Register https://www.clinicaltrialsregister.eu/, trial registration number: 2008-005453-38. The questionnaires collected data on DS intake during the 5-year period prediagnosis (QS1) and in the period postdiagnosis (QS2). Multivariate logistic regression models were fitted to examine differences in DS intake between the two intervention groups. The groups were then pooled to examine differences in DS use between the prediagnostic and postdiagnostic period.ResultsA total of 320 questionnaires from 58.5% of intervention group completers and 416 questionnaires from 46.6% of low-level intervention group completers were included in the analysis. Overall, 20.2% of all respondents reported taking DS prior to their diagnosis. After a cancer diagnosis, the percentage of women taking DS significantly increased to 56.4% (p for time effect < 0.0001). No differences in DS intake between the intervention groups were observed. Single or combined preparations of vitamins and minerals/trace elements were the most frequently reported supplements. Notably, a 9-fold increase in vitamin D intake was reported postdiagnosis, where the proportion of women increased from 3.8 to 34.5%.ConclusionA 3-fold increase in the reported intake of dietary supplements was seen in women after a breast cancer diagnosis. These observations underscore the need to incorporate patient education surrounding the use of dietary supplements in a treatment care plan, particularly addressing the negligible benefits as well as the potential risks and treatment interactions.

Oral preparation of hyaluronic acid, chondroitin sulfate, N-acetylglucosamine, and vitamin C improves sexual and urinary symptoms in participants with recurrent urinary tract infections: a randomized crossover trial.

Intravesical instillation of hyaluronic acid (HA) has been associated with reduced sexual dysfunction in participants with recurrent urinary tract infections (rUTIs), but the efficacy of an oral treatment has never been investigated. To investigate the efficacy of an oral preparation of HA, chondroitin sulfate, N-acetylglucosamine, and vitamin C in improving sexual and urinary symptoms in a cohort of reproductive-age participants with rUTI. In a monocentric randomized crossover pilot trial, participants with rUTI who were referred to our institute between March 2022 and April 2023 were randomized 1:1 in 2 groups: intervention vs control. All participants had an oral preparation of cranberry, D-mannose, propolis extract, turmeric, and Boswellia twice a day for 3 months. The intervention group also included an oral preparation of HA, chondroitin sulfate, N-acetylglucosamine, and vitamin C once a day for 3 months. Crossover of treatment occurred at 3 months for an additional 3 months. At baseline and 3 and 6 months, participants were evaluated clinically and with the International Prostate Symptom Score (IPSS) and Female Sexual Function Index (FSFI). Descriptive statistics and logistic regression models tested the impact of the intervention on urinary and sexual symptoms at each follow-up assessment. Improvement in sexual and urinary symptoms as measured by the FSFI and IPSS. Overall, 27 (54%) participants had an FSFI score <26.5 at enrollment. At 3 months, FSFI scores were higher in the intervention group vs control (P < .001), but IPSS scores were lower (P = .03). After crossover of treatment, FSFI and IPSS scores remained stable in the intervention group. However, after crossover, the control group showed a significant improvement in IPSS and FSFI scores (all P < .01) vs the 3-month assessment. At last follow-up, urinary and sexual symptoms were comparable between groups. In logistic regression analyses, the intervention group was associated with early improvement in sexual symptoms (odds ratio, 3.9; P = .04) and urinary symptoms (odds ratio, 5.1; P = .01) after accounting for clinical confounders. Combination treatment with HA, chondroitin sulfate, N-acetylglucosamine, and vitamin C is effective if started immediately or even after a few months from symptoms in participants with rUTI. The main limitation is the lack of long-term follow-up. The oral formulation of HA, chondroitin sulfate, N-acetylglucosamine, and vitamin C could be an effective therapy against urinary and sexual distress in participants with rUTI (NCT06268483; ClinicalTrials.gov).

Preparation and characterization of vitamin E microcapsules stabilized by Zein with different polysaccharides

Vitamin E (VE) microencapsulation using a green surfactant emulsifier not only protects the active substance and is also environmentally friendly. In this study, we used alcohol ether glycoside as an emulsifier to prepare VE microcapsules using the biological macromolecule Zein and various polysaccharides. The resulting nano microcapsules exhibited a spherical structure, stable morphology, uniform size, and a >90% encapsulation efficiency. They also had good thermal stability and slow-release properties. Of these, xanthan gum/Zein-VE microcapsules were superior, with antioxidant properties up to 3.05-fold higher than untreated VE. We successfully developed VE nano microcapsules that meet eco-friendly and sustainable requirements, which may have applications in the food and pharmaceutical industries.

The effect of gadolinium and lanthanum orthovanadate nanoparticles on the content of vitamins (B2, A, E) and trace elements (Cu, Zn, Se) in the blood serum and liver of broiler chickens

As a result of scientific progress, substances in the nanoscale state are increasingly being introduced into various areas of human activity, including animal husbandry (poultry farming). In particular, nanotechnology is used successfully to enrich food products with minerals, vitamins, antioxidants, that is, they can increase the bioavailability of nutrients by oral administration. In this study, the content of vitamins (A, E, and B2 ) and trace elements (Zn, Cu, and Se) in the blood serum and liver of broiler chickens under the influence of gadolinium orthovanadate, lanthanum orthovanadate, and a mixture of all these was investigated. It was established that their administration to broiler chickens for 10 days at a dose of 0.2 mg/l of drinking water (an average of 0.09 mg/kg body weight) increases the bioavailability of vitamins B2 , A, and E and the trace elements selenium, copper and zinc, which was manifested by an increase in their concentrations in the blood serum compared to the control group (from 8.6% to 3.0 times for vitamins, and from 17.8% to 2.5 times for trace elements, P&lt;0.05) and liver deposition (from 9.4% to 4.6 times for vitamins and from 6.3 to 56.3% for trace elements, P&lt;0.05), with a prolonged effect after administration was stopped. The introduction of nanoparticles (both in mono-solutions and in a mixture), along with a vitamin preparation, indicates the possibility of increasing the content of vitamins and trace elements without their additional introduction, using the dietary resource more fully.

Preparation and characterization of vitamin E/calcium/soy protein isolate nanoparticles for soybean milk beverage fortification.

Soybean milk is a rich plant-based source of protein, and phenolic compounds. This study compared the nutritional value of soybean milk, flour, soy protein isolate (SPI) and evaluated the impact of prepared vitamin E/calcium salt/soy protein isolate nanoparticles (ECSPI-NPs) on fortification of developed soybean milk formulations. Results indicated that soybean flour protein content was 40.50 g/100 g, that fulfills 81% of the daily requirement (DV%), the unsaturated fatty acids (USFs), oleic and linoleic content was 21.98 and 56.7%, respectively, of total fatty acids content. In soybean milk, essential amino acids, threonine, leucine, lysine achieved 92.70, 90.81, 77.42% of amino acid scores (AAS) requirement values respectively. Ferulic acid was the main phenolic compound in soybean flour, milk and SPI (508.74, 13.28, 491.78 µg/g). Due to the moisture content of soybean milk (88.50%) against (7.10%) in soybean flour, the latest showed higher nutrients concentrations. The prepared calcium (20 mM/10 g SPI) and vitamin E (100 mg/g SPI) nanoparticles (ECSPI-NPs) exhibited that they were effectively synthesized under transmission electron microscope (TEM), stability in the zeta sizer analysis and safety up to IC50 value (202 ug/mL) on vero cell line. ECSPI-NPs fortification (NECM) enhanced significantly phenolic content (149.49 mg/mL), taste (6.10), texture (6.70) and consumer overall acceptance (6.54). Obtained results encourage the application of the prepared ECSPI-NPs for further functional foods applications.

Preparation and characterization of vitamin A microcapsules nutrient fortified salt.

The online version contains supplementary material available at 10.1007/s13197-024-05962-w.

Study of the influence of vitamins on the fermentation process in the production of yogurt

The development of the technology of vitaminized dairy products remains a relevant topic for research, because dairy products are included in the daily diet of both children and adults, so the use of such products can reduce the number of cases of hypovitaminosis, both seasonal and general. The purpose of the study is to investigate the effect of introduced ready-made vitaminized complexes on the fermentation process of milk mixtures during the production of yogurt. The article presents the results of studies conducted to determine the effect of vitamins A, D, E, C on the fermentation process of milk mixtures during the production of yogurt, which were added to the milk mixture in order to increase the biological value of the finished product. Fermentation is an important stage in the production of yogurt. To study the influence of added preparations of vitamins A, D, E, C on the fermentation process during the production of yogurt, 2 samples were chosen: “control” – a milk mixture for yogurt pasteurized at 90...92 °C without aging with the addition 5 % sugar. The “experimental” sample is a milk mixture for yogurt with the addition of 5 % sugar, pasteurized at 90...92 °C without aging, with the addition of vitamin preparations. Fermentation processes are influenced by the composition and dose of primary inoculation of sourdough cultures, physicochemical parameters of raw milk, additives included in the normalized mixture, as well as technological process parameters. Vitamins added to the milk mixture during the production of yogurt can affect the fermentation process of the milk mixture and the quality indicators of the finished product during storage. Thus, the task arose to investigate the effect of added preparations of vitamins A, D, E, C on the fermentation process, and to substantiate the fermentation regimes for the production of vitaminized yogurt. As a result of the conducted research, it was determined that vitamin preparations added to the milk mixture before heat treatment did not significantly affect the intensity of acid formation and gel formation. There is also no influence on the development of lactic acid microorganisms that were part of the sourdough, which is confirmed by the results of microbiological studies of the finished product. So, the fermentation parameters of milk mixtures for the production of fortified yogurt are as follows: temperature – (40 ± 2) °C, duration of fermentation – 5.5...6 hours. It has been established that the introduction of a vitaminized complex (A, D, E, C) into the yogurt recipe does not require significant changes in the technological process and equipment line. The content of viable lactic acid bacteria in the developed product is 4.0 ± 0.5 107 CFU/g, and there are no Coliforms, which meets regulatory requirements.

The Impact of the Addition of Vitamins on a Silicone Lining Material to the Oral Mucosa Tissue-Evaluation of the Biocompatibility, Hydrolytic Stability and Histopathological Effect.

Background and Objectives: One's quality of life depends on overall health, and in particular, oral health, which has been and continues to become a public health issue through frequent manifestations in various forms, from simple oral stomatitis (inflammations of the oral cavity) to the complicated oral health pathologies requiring medical interventions and treatments (caries, pulp necrosis and periodontitis). The aim of this study focused on the preparation and evaluation of vitamins (vitamin A, B1 and B6) incorporated into several silicone-based lining materials as a new alternative to therapeutically loaded materials designed as oral cavity lining materials in prosthodontics. Materials and Methods: Silicone-based liners containing vitamins were prepared by mixing them in solution and becoming crosslinked, and then they were characterized using Fourier-transform infrared (FT-IR) spectroscopy to confirm the incorporation of the vitamins into the silicone network; scanning electron microscopy (SEM) to evidence the morphology of the liner materials; dynamic vapor sorption (DVS) to evaluate their internal hydrophobicity, swelling in environments similar to biological fluids and mechanical test to demonstrate tensile strength; MTT to confirm their biocompatibility on normal cell cultures (fibroblast) and mucoadhesivity; and histopathological tests on porcine oral mucosa to highlight their potential utility as soft lining materials with improved efficiency. Results: FT-IR analysis confirmed the structural peculiarities of the prepared lining materials and the successful incorporation of vitamins into the silicone matrix. The surface roughness of the materials was lower than 0.2 μm, while in cross-section, the lining materials showed a compact morphology. It was found that the presence of vitamins induced a decrease in the main mechanical parameters (strength and elongation at break, Young's modulus) and hydrophobicity, which varied from one vitamin to another. A swelling degree higher than 8% was found in PBS 6.8 (artificial saliva) and water. Hydrolytic stability studies in an artificial saliva medium showed the release of low concentrations of silicone and vitamin fragments in the first 24 h, which increased the swelling behavior of the materials, diffusion and solubility of the vitamins. The microscopic images of fibroblast cells incubated with vitamin liners revealed very good biocompatibility. Also, the silicone liners incorporating the vitamins showed good mucoadhesive properties. The appearance of some pathological disorders with autolysis processes was more pronounced in the case of vitamin A liners. Conclusions: The addition of the vitamins was shown to have a beneficial effect that was mainly manifested as increased biocompatibility, hydrolytic stability and mucoadhesiveness with the mucosa of the oral cavity and less of an effect on the mechanical strength. The obtained lining materials showed good resistance in simulated biological media but caused a pronounced autolysis phenomenon, as revealed by histopathological examination, showing that these materials may have broad implications in the treatment of oral diseases.

Calcifediol in patients with hip fractures

Vitamin D deficiency has a high prevalence in the elderly population. This condition can cause sarcopenia and osteoporomalacia, which are associated with an increased risk of falls and fractures, especially of the proximal femur. These fractures have devastating consequences in terms of mortality, disability, and healthcare and social costs. Considering that 60% of hip fracture patients have hypovitaminosis D, and a serum 25(OH)D₃ increase of 10 ng/ml reduces the risk of hip fracture by 20%, correction of vitamin D status is clearly essential. Among the available preparations of vitamin D, calcifediol is preferred in cases with liver disease, malabsorption, obesity, and concomitant use of corticosteroids. Calcifediol administration corrects vitamin D deficiency and suppresses parathyroid hormone within 1 week, reaching the serum 25(OH)D₃ threshold of 30 ng/ml in 2 weeks. Correction of hypovitaminosis D with calcifediol also improves muscle strength and physical performance, reducing the risk of falls. Evidence about the role of calcifediol in the management of hip fracture patients is still scarce. Compared with placebo, administration of calcifediol in combination with strengthening exercise led to increased overall survival in patients with hip fracture. The efficacy of calcifediol in rapidly normalizing vitamin D status might be particularly useful in patients at imminent risk of fracture, such as those with hip fracture who need to receive immediate treatment with anti-osteoporotic drugs. KEY WORDS: Hip fractures, vitamin D deficiency, calcifediol, osteoporosis.

Preparation and Characterization of GX-50 and Vitamin C Co-encapsulated Microcapsules by a Water-in-Oil-in-Water (W1/O/W2) Double Emulsion-Complex Coacervation Method.

Co-encapsulated xanthoxylin (GX-50) and vitamin C (Vc) microcapsules (GX-50-Vc-M) were prepared by the combination of a water-in-oil-in-water (W1/O/W2) double emulsion with complex coacervation. The W1/O/W2 double emulsion was prepared by two-step emulsification, and it has a uniform particle size of 8.388 μm and high encapsulation efficiencies of GX-50 (85.95%) and Vc (67.35%) under optimized process conditions. Complex coacervation occurs at pHs 4.0-4.7, which has the highest encapsulation efficiency of GX-50 and Vc at pH 4.5. The complex coacervate with tannic acid solidifying (namely, wet microcapsules) has better mechanical properties and also enhances the ability of co-encapsulation of active ingredients. The resulting microcapsules by freeze-drying of wet microcapsules were characterized by UV-vis absorbance spectroscopy (UV-vis), Fourier infrared spectroscopy (FI-IR), confocal laser scanning microscopy (CLSM), scanning electron microscopy (SEM), X-ray diffraction (XRD), 2,2-diphenyl-1-picrylhydrazyl (DPPH·) radical scavenging, and in vitro permeation measurements. Under optimal conditions, the encapsulation efficiency and drug loading of GX-50-Vc-M for GX-50 and Vc are, respectively, 78.38 ± 0.51 and 59.34 ± 0.56%, and 35.6 ± 0.68 and 29.8 ± 0.92%. A slight shift in the FTIR peak between single GX-50 or Vc and GX-50-Vc-M confirmed the successful co-encapsulation of GX-50 and Vc in microcapsules. GX-50-Vc-M has bridged irregular spherical aggregates, while GX-50 and Vc are, respectively, encapsulated in hydrophobic and hydrophilic cavities of microcapsules in an amorphous dissolved state. GX-50-Vc-M has the highest DPPH· radical scavenging rate of 62.51%, and the scavenging process of GX-50-Vc-M on DPPH· radicals is more in line with the pseudo-second-order kinetic equation model. Moreover, the in vitro permeation of GX-50 and Vc in GX-50-Vc-M can reach maximum values of 40 and 60%, respectively. This concludes that GX-50-Vc-M is a promising delivery system for the penetration of the antioxidant into the deeper layers of the skin for the antioxidant effect.

Research on the specific toxicity of the drug “BTF plus” – a means for nor-malizing metabolic processes in animals and poultry

Laboratory studies were conducted to determine the subacute toxicity and tolerance of the veterinary drug “BTF plus” on white rats, dogs, and guinea pigs. The “BTF plus” preparation is a complex vitamin and mineral preparation based on butophosphane, L-carnitine, and cyanocobalamin, which normalizes and corrects metabolic processes in animals and poultry. The drug is used for various types of animals and poultry as a stimulating, tonic and general strengthening agent for obstetric pathologies (difficult births, postpartum complications, paresis, eclampsia, sexual cycle disorders); metabolic disorders caused by irrational feeding, malnutrition, asthenic syndrome, etc.; anemia with helminthiasis; secondary anemias, as an additional means in the treatment of magnesium and calcium deficiency; to increase muscle activity, with significant loads, overstrain and exhaustion in animals; to increase the body's resistance to various pathogens; to stimulate growth, development and live weight gain in young animals and poultry; as an additional means in the treatment of diseases caused by various factors (infectious and non-infectious origin). When administered subcutaneously to rats, the drug “BTF plus” under the conditions of a subacute toxicological experiment in doses (by absolute weight of the drug) of 200.0, 1000.0, and 2000.0 mg/kg of body weight does not cause hemo-, hepato- and nephrotoxic effects on the body of laboratory animals, but on the contrary, stimulates hematopoietic processes and has a positive effect on metabolic processes in their body. Subcutaneous administration of the drug “BTF plus” to dogs in doses (by absolute weight of the drug) of 200.0, 1000.0, and 2000 mg/kg of body weight for ten days does not cause hepatotoxic and nephrotoxic effects on the body under the conditions of a subacute toxicological experiment, but on the contrary, stimulates hematopoietic processes and has a positive effect on metabolic processes in the body of target animals. The tolerance of guinea pigs to the drug “BTF plus” was studied. It was established that the drug does not hurt the body and behavior of ants when administered subcutaneously in doses (based on the absolute weight of the drug) (5000,0–15000,0) mg/kg of body weight. Further studies will be the next stage of pre-registration tests aimed at studying the embryotoxic and carcinogenic effect of “BTF plus”, which is mandatory material of the “Safety and residue studies” section of the dossier for this medicinal product.

Experimental evaluation of the acute toxicity and irritant effect of “BTF plus” – a veterinary medicinal product for the normalization of metabolic processes in animals and poultry

Laboratory studies were conducted to determine the acute toxicity of the veterinary drug “BTF plus” on white rats and white mice. The preparation “BTF plus” is a complex vitamin and mineral preparation, which is used to normalize and correct metabolic processes in poultry and animals. The drug is used for various types of animals and poultry as a stimulating, tonic and general strengthening agent for: obstetric pathologies (difficult births, postpartum complications, paresis, eclampsia, sexual cycle disorders); metabolic disorders caused by irrational feeding, malnutrition, asthenic syndrome, etc.; anemia with helminthiasis; secondary anemias, as an additional means in the treatment of magnesium and calcium deficiency; to increase muscle activity, with significant loads, overstrain and exhaustion in animals; to increase the body’s resistance to various pathogens; to stimulate growth, development and live weight gain in young animals; as an additional means in the treatment of diseases caused by various factors (infectious and non-infectious origin). Based on the results of determining the parameters of the acute toxicity of the drug “BTF plus” in the case of a single intragastric administration to white female rats, it was not possible to calculate the LD50, since the death of laboratory animals was not detected within 14 days after administration. At the same time, the maximum injected dose (based on the absolute weight of the drug) was 40000.0 mg/kg of body weight, which allows the drug to be classified as VI class of toxicity – the substances are relatively harmless (LD50 &gt; 15000.0 mg/kg of body weight), and according to the degree of danger to IV class – low-hazardous substances (LD50 &gt; 5000.0 mg/kg of body weight). Based on the results of determining the parameters of the acute toxicity of the drug “BTF plus” in the case of a single subcutaneous injection to white female rats and male mice, it was not possible to calculate the LD50, since the death of laboratory animals was not detected within 14 days after administration. At the same time, the maximum injected dose (based on the absolute weight of the drug) was 20000,0 and 40000.0 mg/kg of body weight for both species of animals, respectively, which allows it to be classified as VI class – relatively harmless substances (LD50Subcut &gt; 4500 mg/kg of body weight). Further studies will be the next stage of pre-registration tests aimed at studying the embryotoxic effect of “BTF plus”, which is mandatory material of the “Safety and residue studies” section of the dossier for this drug.