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Wyszukujesz frazę "growth factor" wg kryterium: Temat


Tytuł:
PDGF-BB homodimer serum level – a good indicator of the severity of alcoholic liver cirrhosis
Autorzy:
Kurys-Denis, E.
Prystupa, A.
Luchowska-Kocot, D.
Krupski, W.
Bis-Wencel, H.
Panasiuk, L.
Powiązania:
https://bibliotekanauki.pl/articles/2085441.pdf
Data publikacji:
2020
Wydawca:
Instytut Medycyny Wsi
Tematy:
alcohol
liver cirrhosis
Child-Pugh score
platelet derived growth factor AA
platelet growth factor AB
platelet derived
growth factor BB
Opis:
Introduction. Liver cirrhosis is a chronic disease in which progressive fibrosis is noted. This process leads to changed architectonics of the liver parenchyma and the appearance of regenerative nodules, all of which are caused by pathological activation of the hepatic stellate cells. This process is enhanced on a molecular level by many cytokines, with platelet-derived growth factors (PDGFs) playing the key role. Objective. The aim of the study was to assess serum concentrations of PDGFs active biodymers (PDGF-AA, PDGF-BB and PDGF-AB) in patients with alcoholic liver cirrhosis, and to correlate them with the stage of disease. Materials and method. 64 patients with alcoholic cirrhosis and a control group of 16 healthy individuals were analysed. Liver cirrhosis was determined based on clinical image, history of the patients’ alcohol consumption, laboratory findings and abdominal ultrasonography. The serum PDGF-AA, PDGF-BB and PDGF-AB concentrations were determined using ELISA kits. Results. Serum concentration of PDGF-AA and PDGF-BB homodimers increases in patients with alcoholic liver cirrhosis (p=0.034 and p<0.0001, respectively), unlike the serum concentration of PDGF-AB heterodimer (p>0.05). When the stage of the disease increases, the concentrations of PDGF-AA and PGFD-BB in blood also oncrease. Furthermore, the serum level of both PDGF-AA and PDGF-BB correlates significantly with the severity of alcoholic liver cirrhosis (measured by Pugh-Child’s scale), the correlation being stronger in the case of PDGF-BB levels than PDGF-AA (R=0.28; p=0.027 and R=0.26; p=0.038, respectively). Conclusions. The plasma levels of PDGF-AA and -BB may be indicators of alcohol-induced liver fibrosis process, and might be considered as future possible treatment targets, with PDGF-BB levels being an even better indicator than PDGF-AA levels.
Źródło:
Annals of Agricultural and Environmental Medicine; 2020, 27, 1; 80-85
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
FGF binding by extracellular matrix components of Whartons jelly
Autorzy:
Malkowski, Andrzej
Sobolewski, Krzysztof
Jaworski, Stefan
Bankowski, Edward
Powiązania:
https://bibliotekanauki.pl/articles/1041086.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
umbilical cord
fibroblast growth factor
metalloproteinases
Opis:
Our earlier paper has reported that Wharton's jelly is a reservoir of several peptide growth factors, including acidic and basic fibroblast growth factors (aFGF and bFGF, respectively). Both can be extracted by buffered salts solutions in the form of high molecular mass complexes, probably with a component(s) of the extracellular matrix. Both aFGF and bFGF from such extracts hardly penetrate 10% polyacrylamide gels during electrophoresis. Pre-treatment of Wharton's jelly with hyaluronidase slightly increased the extractability of aFGF, but did not affect the extractability of bFGF. In contrast, the pre-treatment of tissue homogenate with bacterial collagenase (2000 U/ml, 37°C, 18 h) increased the extractability of bFGF. The presence of β-mercaptoethanol in the extracting solutions increased the extractability of both FGFs, but did not release FGFs in their free form, despite reducing the molecular mass of the FGF-containing complexes. We conclude that both aFGF and bFGF are bound through disulphide bonds to a protein component of Wharton's jelly. We propose that ground substance composed mainly of collagen fibrils and hyaluronate molecules, which surrounds the cells of Wharton's jelly, prevents the access of the extracting solution to aFGF and bFGF. Although hyaluronate and collagen do not bind aFGF or bFGF directly, they may constitute a barrier which prevents the dispersion of FGFs in Wharton's jelly. Thus, the high concentration of FGFs around the cells of Wharton's jelly may facilitate the interaction of these factors with membrane receptors, thereby resulting in stimulation of cell division and differentiation, as well as of the synthesis of extracellular matrix components.
Źródło:
Acta Biochimica Polonica; 2007, 54, 2; 357-363
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Differential expression of epidermal growth factor and transforming growth factor beta isoforms in dog endometrium during different periods of the estrus cycle
Autorzy:
Bukowska, D.
Kempisty, B.
Jackowska, M.
Wozna, M.
Antosik, P.
Piotrowska, H.
Jaskowski, J.M.
Powiązania:
https://bibliotekanauki.pl/articles/30107.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
expression
epidermal growth factor
transforming growth factor-beta
isoform
dog
endometrium
different period
oestrous cycle
Opis:
Both epidermal growth factor (EGF) and transforming growth factor (TGF) play an important physiological role in the processes of proliferation and differentiation of several different cell types. However, the expression profiles of these factors in domestic bitches endometrium are still poorly recognized. The aim of the present study was to identify and analyze the differential expression of these factors in various stages of the estrus cycle. Endometrial tissue from proestrus (n=17), estrus (n=10), day 10 diestrus (n=15), day 35 diestrus (n=18) and anestrus (n=25) was collected soon after ovariohysterectomy. Total RNA was isolated from the endometrium by means of Chomczyński and Sacchi method, treated by DNase I, and reverse- transcribed into cDNA. Quantitative analysis of EGF, TGFβ1, TGFβ2, and TGFβ3 cDNA was performed by real-time quantitative polymerase chain reaction (RT-PCR). EGF expression in canine endometrium was increased in the estrus stage as compared to proestrus (P<0.05), day 10 diestrus (P<0.05), day 35 diestrus (P<0.01) and anestrus (P<0.001). We also found the differences in EGF expression between day 10 and day 35 of estrus as well as between day 35 of estrus with anestrus (P<0.05, P<0.01, respectively). The TGFf1 transcript contents were also higher in estrus as compared to other stages (P<0.01). The TGFβ2 and TGFβ3 in the estrus stage was increased compared to proestrus, day 10 diestrus, day 35 diestrus and anestrus (P<0.05). We proved that expression of EGF and TGFβ transcript isoforms is related to the phase of estrus in bitches and therefore may be regulated by specific hormone concentrations during these periods. Our results confirm the hypothesis that these growth factors play a role in the regulation of biochemical changes in the endometrial tissues during the estrus cycle.
Źródło:
Polish Journal of Veterinary Sciences; 2011, 14, 2
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The potential impact of the hypovitaminosis D on metabolic complications in obese adolescents - preliminary results
Autorzy:
Wójcik, Małgorzata
Janus, Dominika
Kalicka-Kasperczyk, Anna
Sztefko, Krystyna
Starzyk, Jerzy B.
Powiązania:
https://bibliotekanauki.pl/articles/986678.pdf
Data publikacji:
2017
Wydawca:
Instytut Medycyny Wsi
Tematy:
obesity
hypovitaminosis d
uric acid
arterial hypertension
fibroblast growth factor 23
fibroblast growth factor 19
adolescents
Opis:
Introduction and objective. Vitamin D deficiency is common in obesity; however, its contribution in the development of metabolic complications remains uncertain. The aim of the study was to examine the relationships between vitamin D status and metabolic complications. Materials and method. The results of blood pressure measurements, biochemical tests and ultrasound of the liver were compared in both groups. The study was conducted at the Children’s University Hospital in Krakow, Poland. 30 obese adolescents (mean 13.23y.o.); 18 with 25OHD levels <20ng/mL, 12 with 25OHD>20 ng/mL. Results. The vitamin D deficient group presented with significantly higher values of the diastolic blood pressure (125.9vs.115mmHg), uric acid level (384.7vs.301.5umol/L) and lower phosphorus level (1.4vs.1.65mmol/L), higher prevalence of arterial hypertension (44vs.8.3%), and liver steatosis (25vs.8.3%); lower, but not significantly, levels of fibroblast growth factor 23 and fibroblast growth factor 19. Conclusions. Hypovitaminosis D in obese adolescents is associated with higher prevalence of arterial hypertension, liver steatosis, elevated serum uric acid and low phosphorus levels. The potential contribution of the fibroblast growth factor 23 and fibroblast growth factor 19 in these complications development needs further investigation.
Źródło:
Annals of Agricultural and Environmental Medicine; 2017, 24, 4
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
IGF-I and IGF-binding proteins in synovial fluid of patients with Lyme arthritis
Autorzy:
Bączyk, J.
Guszczyn, T.
Romanowicz, L.
Pancewicz, S.
Moniuszko, A.
Popko, J.
Powiązania:
https://bibliotekanauki.pl/articles/1917714.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
Insulin-like Growth Factor-I
Insulinlike Growth Factor-Binding Protein
metalloproteinase
synovial fluid
Lyme arthritis
post-traumatic damage
Opis:
Purpose: Multiple cellular functions are stimulated by a Insulin-like Growth Factor-I (IGF-I). The biological activity of IGF-I is modulated by IGFbinding proteins (IGF-BPs) and at the same time, the availability of IGF-BPs may be regulated by the proteolytic activity of some metalloproteinases (MMPs). The aim of the present study was to compare the amounts of IGF-I and IGF-BPs in relation to the activity of MMP-9 in serum and knee synovial fluid from patients with Lyme arthritis (LA) and post-traumatic damage (PTD). Material and methods: Serum and synovial fluids were taken from knee joints of patients with PTD and LA. ELISA (for IGF-I assay), polyacrylamine gel electrophoresis following Western immuneblotting (for IGF-I and IGF-BPs expression), and zymography (for metalloproteinases detection), were used. Results: The concentration of IGF-I in serum and synovial fluid from LA patients were significantly lowered in comparison to PTD patients. Interesting, the synovial fluid /serum ratio of IGF-I concentrations was also lower in LA patients. Low expression IGF-BP3 and high activity of MMP-9 were detected in the LA synovial fluid. Conclusions: The high proteolytic activity of MMP- 9 results in a cleavage of both IGF-I and IGF-BP3 causing a decrease in content of these substances in LA synovial fluid. In addition, the reduction in IGF and IGF-BP amounts may affect the repair processes in joint tissues of LA patients. The low concentration of IGF-I and IGF-BP3 slows down the repair processes in the joint tissues of LA patients.
Źródło:
Progress in Health Sciences; 2016, 6(1); 49-56
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relation between expression of TNF alpha, iNOS, VEGF mRNA and development of heart failure after experimental myocardial infarction in rats
Autorzy:
Heba, G.
Krzeminski, T.
Porc, M.
Grzyb, J.
Dembinska-Kiec, A.
Powiązania:
https://bibliotekanauki.pl/articles/69900.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Fizjologiczne
Tematy:
nitric oxide synthase
tumour necrosis factor-alpha
cytokine
ischaemic myocardium
mRNA
thoracotomy
growth factor
rat
myocardial infarction
vascular endothelial growth factor
Źródło:
Journal of Physiology and Pharmacology; 2001, 52, 1
0867-5910
Pojawia się w:
Journal of Physiology and Pharmacology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of hydrazine derivatives of 3-formylchromones on angiogenic basic fibroblast growth factor and fibroblast growth factor receptor-1 in human melanoma cell line WM-115
Autorzy:
Łazarenkow, Andrzej
Michalska, Marta
Mirowski, Marek
Słomiak, Krzysztof
Nawrot-Modranka, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/1038629.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
angiogenesis
basic fibroblast growth factor
fibroblast growth factor receptor 1
human melanoma
hydrazone derivatives of benzo-γ-pyrones
Opis:
The hydrazine derivatives of benzopyrones remain an unexplored group of chemical compounds. This preliminary study investigates the influence of A-5, CH-3 and K-2 derivatives at concentrations of 1, 10, 100 nM and 1 μM on selected biochemical factors of a melanoma cell line WM-115, with regard to their potential angiogenic properties. The studied compounds were found to influence cell proliferation, as well as total protein, bFGF and FGFR1 concentration.
Źródło:
Acta Biochimica Polonica; 2017, 64, 3; 585-590
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Endocrine Responses to Physical Training and Tribulus Terrestris Supplememtation in Middle-Age Men
Autorzy:
Wilk, Michał
Michalczyk, Małgorzata
Chycki, Jakub
Czuba, Miłosz
Roczniok, Robert
Gołaś, Artur
Zając, Adam
Maszczyk, Adam
Powiązania:
https://bibliotekanauki.pl/articles/1054899.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
growth hormone
insulin-like growth factor
steroidal saponins
supplementation
testosterone
Opis:
The aim of this study was to evaluate the effects of steroidal saponin supplementation on blood concentration of T, GH and IGF-1. The research involved 14 men between the age of 45 and 60 years. The duration of the experiment was 12 weeks. There were two series of laboratory tests. Independent tests were conducted at the beginning and after 12 weeks of the intervention. A two-way repeated measures ANOVA revealed a statistically significant effect of the intervention on the following variables: T-Ch (η2 = 0.542), HDL-Ch (η2 = 0.522), LDL-Ch (η2 = 0.587), T (η2 = 0.603), IGF-1 (η2 = 0.512) and GH (η2 = 0.621). Thus, FFM significantly increased while TBF and BM decreased in comparison to pre-intervention levels. The analyzed results indicate that treatment or supplementation of individual hormone deficiencies can be a successful form of counteracting the aging process. Nevertheless, the effects of TT supplementation on the concentration of T as well as GH and IGF-1, requires further studies, especially in middle-aged and older subjects, along with different exercise programs. The analyzed results indicate that treatment or supplementation of individual hormone deficiencies can be a major form of counteracting the aging process.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2016, 13, 1; 65-71
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potential role of transforming growth factor β1 in drug resistance of tumor cells.
Autorzy:
Stoika, Rostyslav
Yakymovych, Mariya
Souchelnytskyi, Serhiy
Yakymovych, Ihor
Powiązania:
https://bibliotekanauki.pl/articles/1043628.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
tumor cells
drug resistance
transforming growth factor b1
Opis:
Acquired drug resistance of tumor cells is frequently observed in cancer patients undergoing chemotherapy. We studied murine leukemia L1210 cells sensitive and resistant to the cytotoxic action of cisplatin and showed that cisplatin-resistant leukemia cells were also refractory to TGF β1-dependent growth inhibition and apoptosis. Addressing the question about the mechanisms responsible for the cross-resistance to cisplatin and TGF β1, we found that cisplatin- and TGF β1-resistant L1210 cells possessed a decreased expression of type I TGF β1 receptor, while the expression of type II TGF β1 receptor was not affected. Western blot analysis of Smad proteins 2, 3, 4, 6, and 7, which participate in signal transduction pathway down-stream of the TGF b1 receptors, revealed an increased expression of Smad 6, inhibiting TGF b1 action, only in cisplatin- and TGF β1-resistant L1210 cells. TGF β1 and especially the cytotoxic mistletoe agglutinin increased Smad 6 expression in TGF β1-sensitive but not in TGF β1-resistant L1210 cells. TGF β1-resistant L1210 cells also differed from TGF β1-sensitive cells by the lack of expression of the pro-apoptotic p53 protein and higher level of expression of the anti-apoptotic Bcl-2 protein. Thus, the described co-expression of tumor cell refractoriness to an anti-cancer drug and to the inhibitory cytokine TGF β1 is accompanied by multiple changes in the TGF β1 signal transduction pathway and in other regulatory systems of the target cells. Besides, we found that various anti-tumor drugs and cytotoxic plant lectins increased the level of TGF b1 expression in both TGF β1-sensitive and -resistant L1210 cells. A hypothesis is proposed that TGF β1 can at least partly mediate the effect of cell-stressing agents and, thus, the development of TGF β1 resistance may be responsible for the appearance of tumor cell refractoriness to the action of some anti-cancer drugs.
Źródło:
Acta Biochimica Polonica; 2003, 50, 2; 497-508
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of serum and tissue magnesium, Vascular Endothelial Growth Factor and osteopontin levels in dogs with mammary tumor with/without pulmonary metastases and in healthy dogs
Autorzy:
Gunay Ucmak, Z.
Koenhemsi, L.
Ucmak, M.
Yalcin, E.
Gonul, R.
Ates, A.
Powiązania:
https://bibliotekanauki.pl/articles/1192810.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
canine mammary tumor
magnesium
osteopontin
vascular endothelial growth factor
Opis:
Mammary tumors in female dogs are usually malignant and tend to metastasize to distant organs, especially to regional lymph nodes and lungs. Radiography is the standard diagnostic method to detect pulmonary metastases in these animals. Magnesium (Mg), vascular endothelial growth factor (VEGF), and osteopontin (OPN) levels have been used in recent studies to make prognoses of human breast cancer. To the best of our knowledge, however, there are not many studies that have been performed on this subject, and there is no study on animals in which the three indicators are scrutinized together. The aim of this present study is to evaluate Mg, VEGF, and OPN levels in healthy dogs and in dogs with mammary tumors with/without pulmonary metastases, and to investigate the alterations of these parameters in the serum and tissue samples of dogs with mammary tumors in connection with the histological tumor type and tumor grade. Mammary tumor groups were designed according to the presence of pulmonary metastasis in radiography; group M1 consists of 20 dogs with metastatic mammary tumors to the lung, and group M0 consists of 20 dogs with nonmetastatic mammary tumors. Ten clinically healthy dogs composed group H. The dogs represented different breeds and ages. Threeview thoracic radiographs were taken to determine any metastasis in lungs by digital radiography. Magnesium, VEGF, and OPN were determined in the mammary gland samples and blood serum of 40 dogs with malignant mammary tumors and in 10 healthy dogs. The magnesium levels were measured by atomic absorption spectrophotometry, both in the tissue and serum samples. Also, the tissue and serum VEGF and OPN levels were determined by ELISA with commercially available kits. The tissue Mg levels in the M0 group were significantly (P<0.05) higher than in group H. However, the serum VEGF level was significantly associated with a tumor type. Additionally, the serum OPN levels exhibited a tendency to be higher in dogs with mammary tumors with pulmonary metastases, grade 3, and carcinosarcoma. It is concluded that Mg, VEGF, and OPN could have practical use for diagnosing and understanding the pathophysiology of CMT.
Źródło:
Journal of Elementology; 2021, 26, 1; 125-135
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł

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