Silesian Medical College in Katowice
Silesian Medical College in Katowice
Kaczmarczyk-Sedlak I.,Medical University of Silesia, Katowice |
Klasik-Ciszewska S.,Silesian Medical College in Katowice |
Wojnar W.,Medical University of Silesia, Katowice
Pharmacological Reports | Year: 2016
Background One of the major causes of osteoporosis and bone fracture in postmenopausal women is estrogen deficiency. To prevent the fractures, and avoid the side effects of hormone replacement therapy, phytoestrogens including the isoflavonoids are used. In the presented study two constituents occurring in the licorice root—the isoflavane glabridin and triterpenoid saponin glycyrrhizic acid were examined on the skeletal system of ovariectomized rats. Methods The female Wistar rats were divided into five groups: control group, ovariectomized group as well as three ovariectomized groups treated with estradiol (0.2 mg/kg), glabridin (5 mg/kg) or glycyrrhizic acid (15 mg/kg). All substances were administered orally for 4 weeks. The estradiol served as a positive control. The mechanical properties of femoral diaphysis, tibial metaphysis and femoral neck were assessed using bending and compression tests. Moreover the chemical composition of the femur, tibia and L-4 vertebra – content of water, organic substances and minerals – was determined. Results Ovariectomy induced unfavorable changes in the skeletal system of the rats. Administration of glabridin and glycyrrhizic acid to the ovariectomized rats did not improve analyzed parameters of the bones. Conclusion Obtained results indicate, that the tested substances revealed no beneficial effect on the mechanical properties and chemical composition of the tested bones, thus they cannot be used as the osteoporosis protective agents. © 2016 Institute of Pharmacology, Polish Academy of Sciences
Palacz-Wrobel M.,Silesian Medical College in Katowice |
Palacz-Wrobel M.,University of Silesia |
Borkowska P.,University of Silesia |
Paul-Samojedny M.,University of Silesia |
And 4 more authors.
Biomedicine and Pharmacotherapy | Year: 2017
Polyphenols such as apigenin, kaempferol or resveratrol are typically found in plants, including fruits, vegetables, herbs and spices, which have a wide range of biological functions such as antioxidative, anti-inflammatory, vasodilative, anticoagulative and proapoptotic. Discovering such multifunctional compounds in widely consumed plant-based products – ones that both inhibit the release of TNF-α from tissue macrophages and at the same time enhance the secretion of IL-10 – would be an important signpost in the quest for effective pharmacological treatment of numerous diseases that have an inflammatory etiology. The aim of the study is to investigate the impact of biologically active polyphenols such as apigenin, resveratrol and kaempferol on gene expression and protein secretion of IL-10 and TNF-α in line RAW-264.7. Cells were cultured under standard conditions. IL-10 and TNF-α genes expression were examined using QRT-PCR and to assess cytokines concentration ELISA have been used. Apigenin, kaempferol and resveratrol at a dose 30 μM significantly decrease the TNF-α expression and secretion. Apigenin decrease the IL-10 expression and secretion. Furthermore, increase in IL-10 secretion after administration of kaempferol and resveratrol were observed. In the process of administration of tested compounds before LPS, which activate macrophages, decrease of TNF-α secretion after apigenin and kaempferol and increase of IL-10 secretion after resveratrol were observed. The results of present work indicate that 1) apigenin, resveratrol and kaempferol may reduce the intensity of inflammatory processes by inhibiting the secretion of proinflammatory cytokine TNF-α, and resveratrol and kaempferol additionally by increasing the secretion of anti-inflammatory cytokine IL-10 2) the studies indicate the potentially beneficial – anti-inflammatory – impact of diet rich in products including apigenin, resveratrol and kaempferol. © 2017 Elsevier Masson SAS
Maciazek-Jurczyk M.,University of Silesia |
Szkudlarek A.,University of Silesia |
Chudzik M.,University of Silesia |
Pozycka J.,University of Silesia |
Sulkowska A.,Silesian Medical College in Katowice
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy | Year: 2017
Albumin, a major transporting protein in the blood, is the main target of modification that affects the binding of drugs to Sudlow's site I and II. These modification of serum protein moderates its physiological function, and works as a biomarker of some diseases. The main goal of the paper was to explain the possible alteration of human serum albumin binding properties induced by modifications such as glycation, oxidation and ageing, their origin, methods of evaluation and positive and negative meaning described by significant researchers. © 2017 Elsevier B.V.
Kurek-Gorecka A.,Silesian Medical College in Katowice |
Rzepecka-Stojko A.,University of Silesia |
Gorecki M.,University of Silesia |
Stojko J.,University of Silesia |
And 2 more authors.
Molecules | Year: 2014
Propolis is a potential source of natural antioxidants such as phenolic acids and flavonoids. Its wide biological effects have been known and used since antiquity. In the modern world natural substances are sought which would be able to counteract the effects of antioxidative stress, which underlies many diseases, such as cancer, diabetes and atherosclerosis. This paper aims to present the antioxidative activity of phenolic acids and flavonoids present in Polish propolis and the relationship between their chemical structure and antioxidative activity influencing its medicinal properties. Data concerning the biological activity of propolis are summarized here, including its antibacterial, anti-inflammatory, anticarcinogenic, antiatherogenic, estrogenic effects, as well as AIDS- counteracting and reparative-regenerative function.© 2014 by the authors licensee MDPI Basel Switzerland.
Morus M.,Silesian Medical College in Katowice |
Baran M.,Silesian Medical College in Katowice |
Rost-Roszkowska M.,Silesian Medical College in Katowice |
Rost-Roszkowska M.,University of Silesia |
And 2 more authors.
Acta Poloniae Pharmaceutica - Drug Research | Year: 2014
The stem cells thanks to their ability of unlimited division number or transformation into different cell types creating organs, are responsible for regeneration processes. Depending on the organism in which the stem cells exists, they divide to the plant or animal ones. The later group includes the stem cells existing in both embryo's and adult human's organs. It includes, among others, epidermal stem cells, located in the hair follicle relieves and also in its basal layers, and responsible for permanent regeneration of the epidermis. Temporary science looks for method suitable for stimulation of the epidermis stem cells, amongst the other by delivery of e.g., growth factors for proliferation that decrease with the age. One of the methods is the use of the plant cell culture technology, including a number of methods that should ensure growth of plant cells, issues or organs in the environment with the microorganism-free medium. It uses abilities of the different plant cells to dedifferentiation into stem cells and coming back to the pluripotent status. The extracts obtained this way from the plant stem cells are currently used for production of both common or professional care cosmetics. This work describes exactly impact of the plant stem cell extract, coming from one type of the common apple tree (Uttwiler Spátlauber) to human skin as one of the first plant sorts, which are used in cosmetology and esthetic dermatology. © 2014, Polish Pharmaceutical Society. All rights reserved.
Rost-Roszkowska M.M.,University of Silesia |
Rost-Roszkowska M.M.,Silesian Medical College in Katowice |
Chajec L.,University of Silesia |
Chajec L.,Silesian Medical College in Katowice |
And 2 more authors.
Protoplasma | Year: 2015
Three types of cells have been distinguished in the midgut epithelium of two centipedes, Lithobius forficatus and Scolopendra cingulata: digestive, secretory, and regenerative cells. According to the results of our previous studies, we decided to analyze the relationship between apoptosis and necrosis in their midgut epithelium and circadian rhythms. Ultrastructural analysis showed that these processes proceed in a continuous manner that is independent of the circadian rhythm in L. forficatus, while in S. cingulata necrosis is activated at midnight. Additionally, the description of apoptosis and necrosis showed no differences between males and females of both species analyzed. At the beginning of apoptosis, the cell cytoplasm becomes electron-dense, apparently in response to shrinkage of the cell. Organelles such as the mitochondria, cisterns of endoplasmic reticulum transform and degenerate. Nuclei gradually assume lobular shapes before the apoptotic cell is discharged into the midgut lumen. During necrosis, however, the cytoplasm of the cell becomes electron-lucent, and the number of organelles decreases. While the digestive cells of about 10 % of L. forficatus contain rickettsia-like pathogens, the corresponding cells in S. cingulata are free of rickettsia. As a result, we can state that apoptosis in L. forficatus is presumably responsible for protecting the organism against infections, while in S. cingulata apoptosis is not associated with the elimination of pathogens. Necrosis is attributed to mechanical damage, and the activation of this process coincides with proliferation of the midgut regenerative cells at midnight in S. cingulata. © 2015 Springer-Verlag Wien
PubMed | Silesian Medical College in Katowice
Type: Journal Article | Journal: Molecules (Basel, Switzerland) | Year: 2013
Propolis is a potential source of natural antioxidants such as phenolic acids and flavonoids. Its wide biological effects have been known and used since antiquity. In the modern world natural substances are sought which would be able to counteract the effects of antioxidative stress, which underlies many diseases, such as cancer, diabetes and atherosclerosis. This paper aims to present the antioxidative activity of phenolic acids and flavonoids present in Polish propolis and the relationship between their chemical structure and antioxidative activity influencing its medicinal properties. Data concerning the biological activity of propolis are summarized here, including its antibacterial, anti-inflammatory, anticarcinogenic, antiatherogenic, estrogenic effects, as well as AIDS- counteracting and reparative-regenerative function.
PubMed | Silesian Medical College in Katowice
Type: Comparative Study | Journal: Acta poloniae pharmaceutica | Year: 2016
Licorice is a medicinal plant showing many therapeutic activities. Its roots contain numerous pharmacologically active compounds such as a triterpenoid saponin--glycyrrhizic acid and an isoflavan--glabridin. There are reports indicating that glabridin exhibits estrogen-like activity, therefore it can be classified into phytoestrogens, which may soothe menopause symptoms including postmenopausal osteoporosis. Due to this fact, the aim of the presented study was to evaluate the effect of glabridin and glycyrrhizic acid on histomorphometric parameters of bones in rats with ovariectomy-induced osteoporosis. The animals were divided into 6 group: (C)--control rats, (OVX)--ovariectomized rats, (OVX + E)--ovariectomized rats receiving estradiol at a dose of 0.1 mg/kg p.o., (OVX + G)--ovariectomized rats receiving genistein at a dose of 5 mg/kg p.o., (OVX + GL --ovariectomized rats treated with glabridin at a dose of 5 mg/kg p.o. and (OVX + GA)--ovariectomized rat administered with glycyrrhizic acid at a dose of 15 mg/kg p.o. Estradiol and genistein served as the positive controls in the study. Several macrometric and histomorphometric parameters were analyzed in the bones of tested rats. Obtained results indicate that glabridin shows slightly positive effect on osteoporotically changed bone tissue, and glycyrrhizic acid reveals meager influence on skeletal system with no preventive significance.
PubMed | Medical University of Silesia, Katowice and Silesian Medical College in Katowice
Type: Journal Article | Journal: Przeglad menopauzalny = Menopause review | Year: 2015
Osteoporosis affects millions of people in the whole world and brings about far-reaching physical and psycho-social consequences for patients and financial ones for the health care system, and therefore it is classified as one of public health problems and treated as a social disease. Women belong to the increased osteoporosis illness risk group due to lower top bone mass reached earlier in life as compared to men and due to hormonal changes occurring in the menopausal period, which affect loss of the bone mineral density (BMD). Limitation of the osteoporosis-related financial and social costs increase requires efficient preventive actions on the level of early, primary, secondary or tertiary prevention. At all the four osteoporosis prevention phases, the crucial role is played by health education and nutrition education, the latter being the key element of the former one. The nutritional education purpose is to acquaint patients with nutrition recommendations that are the basic element of the osteoporosis prevention and to make them change their nutrition habits, which will improve their osseous metabolism. The education should be based on results of the latest scientific researches and focus on recommendations relating to proper supplementing of calcium and vitamin D, simultaneously including all the other nutrition components, necessary to decrease the osteoporosis risk. The primary prevention oriented to a specific group at risk for osteoporosis, including peri- or postmenopausal women, should be provided in cooperation with the different levels medical professionals and it should focus on causing positive changes in patients both as regards nutrition habits and physical activities.
PubMed | Medical University of Silesia, Katowice, University of Silesia and Silesian Medical College in Katowice
Type: Journal Article | Journal: Molecules (Basel, Switzerland) | Year: 2015
Bee pollen constitutes a natural source of antioxidants such as phenolic acids and flavonoids, which are responsible for its biological activity. Research has indicated the correlation between dietary polyphenols and cardioprotective, hepatoprotective, anti-inflammatory, antibacterial, anticancerogenic, immunostimulating, antianaemic effects, as well as their beneficial influence on osseous tissue. The beneficial effects of bee pollen on health result from the presence of phenolic acids and flavonoids which possess anti-inflammatory properties, phytosterol and linolenic acid which play an anticancerogenic role, and polysaccharides which stimulate immunological activity. Polyphenols are absorbed in the alimentary tract, metabolised by CYP450 enzymes, and excreted with urine and faeces. Flavonoids and phenolic acids are characterised by high antioxidative potential, which is closely related to their chemical structure. The high antioxidant potential of phenolic acids is due to the presence and location of hydroxyl groups, a carboxyl group in the immediate vicinity of ortho-diphenolic substituents, and the ethylene group between the phenyl ring and the carboxyl group. As regards flavonoids, essential structural elements are hydroxyl groups at the C5 and C7 positions in the A ring, and at the C3 and C4 positions in the B ring, and a hydroxyl group at the C3 position in the C ring. Furthermore, both, the double bond between C2 and C3, and a ketone group at the C4 position in the C ring enhance the antioxidative potential of these compounds. Polyphenols have an ideal chemical structure for scavenging free radicals and for creating chelates with metal ions, which makes them effective antioxidants in vivo.