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    Wyświetlanie 1-7 z 7
    Tytuł:
    Homocysteine, heat shock proteins, genistein and vitamins in ischemic stroke - pathogenic and therapeutic implications
    Autorzy:
    Banecka-Majkutewicz, Zyta
    Sawuła, Wojciech
    Kadziński, Leszek
    Węgrzyn, Alicja
    Banecki, Bogdan
    Powiązania:
    https://bibliotekanauki.pl/articles/1039636.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    heat shock proteins
    homocysteine
    genistein
    ischemic stroke
    Opis:
    Stroke is one of the most devastating neurological conditions, with an approximate worldwide mortality of 5.5 million annually and loss of 44 million disability-adjusted life-years. The etiology of stroke is often unknown; it has been estimated that the etiology and pathophysiology remains unexplained in more than 40% of stroke cases. The conventional stroke risk factors, including hypertension, diabetes mellitus, smoking, and cardiac diseases, do not fully account for the risk of stroke, and stroke victims, especially young subjects, often do not have any of these factors. It is very likely that inflammation, specific genetic predispositions and traditional risk factors interact with each other and may together increase the risk of stroke. Inflammatory and immune responses play important roles in the course of ischemic stroke. Hyperhomocysteinemia (hcy) is considered a modifiable risk factor for stroke, possibly through an atherogenic and prothrombotic mechanism. Both genetic and environmental factors (e.g., dietary intake of folic acid and B vitamins) affect homocysteine level. Identification of the role of hcy as a modifiable risk factor for stroke and of HSPs as regulators of the immune response may lead to more effective prevention and treatment of stroke through dietary and pharmacological intervention. Dietary modification may also include supplementation with novel preventive compounds, such as the antioxidative isoflavones - genistein or daidzein.
    Źródło:
    Acta Biochimica Polonica; 2012, 59, 4; 495-499
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cytokines of the Th1 and Th2 type in sera of rheumatoid arthritis patients; correlations with anti-Hsp40 immune response and diagnostic markers
    Autorzy:
    Tukaj, Stefan
    Kotlarz, Agnieszka
    Jóźwik, Agnieszka
    Smoleńska, Żaneta
    Bryl, Ewa
    Witkowski, Jacek
    Lipińska, Barbara
    Powiązania:
    https://bibliotekanauki.pl/articles/1040376.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    rheumatoid arthritis
    Hsp40
    cytokines
    heat shock proteins
    Opis:
    Rheumatoid arthritis (RA) is a chronic, systemic inflammatory disease which affects approximately 1% of the population worldwide. Recent research on the role of heat shock proteins (Hsps) in RA development indicates that they may have pro- or anti-inflammatory effect, most probably via modulating cytokine secretion. We investigated type Th1 (INFγ, TNFα, IL-2) and type Th2 (IL-10, IL-6, IL-4) cytokine levels in sera of RA patients and healthy controls, using flow cytometric bead array assay, and searched for correlations between the cytokine levels and serum antibodies against bacterial (DnaJ) and human (Hdj1, Hdj2 and Hdj3) Hsp40 proteins, as well as clinical and laboratory parameters. The levels of all cytokines studied were significantly increased in RA patients; the highest increase relative to healthy controls (7-fold) was observed for IL-6 and its levels correlated positively with the antibodies directed to DnaJ and to the C-terminal domain of Hdj2, and with diagnostic parameters (DAS 28, Steinbrocker RTG criteria, ARA/7, ESR, TEN, SW and GH). INFγ levels correlated negatively with DAS 28, ESR, TEN and SW. No correlations were found for TNFα, IL-2 or IL-4. Our results support the hypothesis of Hsp40 involvement in RA as well as indicate that IL-6 serum level is a good marker of the RA activity.
    Źródło:
    Acta Biochimica Polonica; 2010, 57, 3; 327-332
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Białka szoku cieplnego - wrażliwe biomarkery zagrożenia komórek stresem
    Heat shock proteins - sensitive biomarkers of cells endangered by stress
    Autorzy:
    Pedrycz, A.
    Siermontowski, P.
    Dudzińska, M.
    Tomasiak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/366161.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Medycyny i Techniki Hiperbarycznej
    Tematy:
    białka szoku cieplnego
    stres komórkowy
    heat shock proteins
    cellular stress
    Opis:
    Białka szoku cieplnego zapobiegają działaniu szkodliwych czynników i regulują funkcjonowanie wielu procesów komórkowych. Tworzą niekowalencyjne połączenia a innymi strukturami zawierającymi polipeptydy, w sytuacji, gdy struktury te nie spełniają swoich biologicznych funkcji. Znajdują się w komórkach osób zdrowych. Ich stężenie spada wraz z wiekiem a wzrasta w stanach chorobowych. Celem obecnej pracy była analiza budowy i funkcji białek szoku cieplnego. Zwrócono uwagę na rolę jaką białka te odgrywają w procesie życia i śmierci komórek, w patogenezie wielu chorób, w tym nowotworowych, miażdżycy, nadciśnienia tętniczego. Przedstawiono kierunki badań nad możliwością wykorzystania białek szoku cieplnego w procesie terapii licznych chorób. Zauważono również, że białka te pełnią rolę biomarkerów stresu komórkowego wywołanego wieloma stresorami, w tym zanieczyszczeniem środowiska
    Heat shock proteins prevent adverse effects induced by harmful conditions and regulate the functioning of numerous cellular processes. They produce non-convalescent connections with other structures containing polypeptides in situations when these structures do not fulfill their biological functions. They are present in the cells of healthy people and their concentration tends to decrease with age and increase at times of illness. The objective of the current work was to analyse the structuring and functions of heat shock proteins. The investigation looked at the role that such proteins play in the process of life and death of cells in the pathogenesis of many diseases, including cancerous diseases, sclerosis, and hypertension. This paper presents research directions examining the possibility of applying heat shock proteins in treating numerous diseases. Such proteins have also been observed to serve as biomarkers of cellular stress induced by a variety of stressors, including environmental pollution.
    Źródło:
    Polish Hyperbaric Research; 2012, 2(39); 69-80
    1734-7009
    2084-0535
    Pojawia się w:
    Polish Hyperbaric Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Increased levels of antibodies against heat shock proteins in stroke patients
    Autorzy:
    Banecka-Majkutewicz, Zyta
    Grabowski, Michał
    Kadziński, Leszek
    Papkov, Aliaksei
    Węgrzyn, Alicja
    Banecki, Bogdan
    Powiązania:
    https://bibliotekanauki.pl/articles/1039307.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    HSP
    Heat Shock Proteins
    Stroke
    DnaK
    DnaJ
    GroEL
    Hsp70
    ELISA
    Opis:
    Ischemic stroke is the second leading cause of death worldwide. One of the main risk factors of the ischemic stroke is atherosclerosis which is a chronic inflammatory and immune-mediated disease. Bacterial infections generate specific human antibodies against various antigens, including Hsps. It has been demonstrated that Hsps are selectively overexpressed in the atherosclerotic lesions. The amino acid sequence homology between human and bacterial Hsps may lead to an autoimmune response by immunological cross-reaction. Such immune response against Hsps overexpressed in the blood vessels under stressful conditions may contribute to inflammatory processes and subsequent development of atherosclerosis. In this study we determined the antibody levels against bacterial and human Hsp by ELISA in blood plasma obtained from stroke patients. Using ANOVA we analyzed levels of Hsp-antibodies in control and patient groups and correlate them with several stroke risk factors. The group of stroke patients had elevated levels of anti-Hsp antibodies compared to the control group. We also discovered an antibody level increase in patients that previously underwent another stroke. Our data provide evidence that autoimmunity could underlie formation of atherosclerosis plaque leading to stroke.
    Źródło:
    Acta Biochimica Polonica; 2014, 61, 2; 379-383
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Role of Escherichia coli heat shock proteins IbpA and IbpB in protection of alcohol dehydrogenase AdhE against heat inactivation in the presence of oxygen
    Autorzy:
    Matuszewska, Ewelina
    Kwiatkowska, Joanna
    Ratajczak, Elżbieta
    Kuczyńska-Wiśnik, Dorota
    Laskowska, Ewa
    Powiązania:
    https://bibliotekanauki.pl/articles/1040618.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    AdhE
    protein aggregation
    protein oxidation
    small heat shock proteins IbpA and IbpB
    Opis:
    Escherichia coli small heat shock proteins IbpA and IbpB are molecular chaperones that bind denatured proteins and facilitate their subsequent refolding by the ATP-dependent chaperones DnaK/DnaJ/GrpE and ClpB. In vivo, the lack of IbpA and IbpB proteins results in increased protein aggregation under severe heat stress or delayed removal of aggregated proteins at recovery temperatures. In this report we followed the appearance and removal of aggregated alcohol dehydrogenase, AdhE, in E. coli submitted to heat stress in the presence of oxygen. During prolonged incubation of cells at 50°C, when AdhE was progressively inactivated, we initially observed aggregation of AdhE and thereafter removal of aggregated AdhE. In contrast to previous studies, the lack of IbpA and IbpB did not influence the formation and removal of AdhE aggregates. However, in ΔibpAB cells AdhE was inactivated and oxidized faster than in wild type strain. Our results demonstrate that IbpA and IbpB protected AdhE against thermal and oxidative inactivation, providing that the enzyme remained soluble. IbpA and IbpB were dispensable for the processing of irreversibly damaged and aggregated AdhE.
    Źródło:
    Acta Biochimica Polonica; 2009, 56, 1; 55-61
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    αB-crystallin as a promising target in pathological conditions - a review
    Autorzy:
    Maksymiuk, M.
    Sabiborowicz, A.
    Tuzimek, A.
    Deptała, A.
    Czerw, A.
    Badowska-Kozakiewicz, A.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2086060.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    αB-crystallin
    small heat-shock proteins
    breast cancer
    renal cell carcinoma
    Opis:
    Introduction and objective. αB-crystallin belongs to the ubiquitous family of small heat-shock proteins. It was discovered as a physiological protein of the eye lens, maintaining its liquid-like property. Furthermore, αB-crystallin was proved to playa bipolar role in both physiological and pathophysiological conditions. This review discusses current knowledge about the biology and genetics of αB-crystallin, and summarizes recent advances in understanding its role in ophthalmic and neurological disorders, as well as breast cancer, renal cancer and other malignancies. State of knowledge. α-crystallins are established as important elements of the protein quality control network, and consequently their defects are related to multiple human diseases. New studies highlight αB-crystallin’s involvement in proliferative diabetic retinopathy angiogenesis and point out its therapeutic potential in age-related macular degeneration. αB-crystallin is thought to be associated with the disease-causing protein aggregates, leading to its connection with such neurological disturbances as anaplastic astrocytoma, Parkinson disease, aging deficits in the peripheral nervous system and multiple sclerosis. In breast cancer, it was proven to be a marker of aggressive behaviur and cerebral metastases. Strong expression of αB-crystallin promoted growth and migration of clear cell renal cell carcinoma cells and was correlated with lower overall survival rate. Considering other malignancies, its various roles were established in colorectal and gastric cancers, head and neck squamous cell carcinomas and osteosarcomas. Conclusions. Further studies concerning αB-crystallin seem to be enormously promising, as they might improve our understanding of common human pathologies as well as contemporary diagnostics and treatment.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2020, 27, 3; 326-334
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ hiperoksji i hiperbarii na ekspresję białek szoku cieplnego i aktywność syntazy tlenku azotu – przegląd badań
    The influence of hyperoxia on heat shock proteins expression and nitric oxide synthase activity – the review
    Autorzy:
    Szyller, J.
    Kozakiewicz, M.
    Siermontowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1359730.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Medycyny i Techniki Hiperbarycznej
    Tematy:
    stres oksydacyjny
    hiperoksja
    hiperbaria
    białka szoku cieplnego
    syntaza tlenku azotu
    oxidative stress
    hyperoxia
    hyperbaria
    heat-shock proteins
    nitric oxide synthase
    Opis:
    Przebywanie w środowisku o zwiększonej zawartości tlenu (wyższym ciśnieniu parcjalnym tlenu, pO2) i pod zwiększonym ciśnieniem (hiperbaria) prowadzi do nasilenia stresu oksydacyjnego. Reaktywne formy tlenu (ROS) uszkadzają cząsteczki białek, kwasów nukleinowych, powodują oksydację lipidów i zaangażowane są w rozwój wielu chorób m.in. układu krążenia, chorób neurodegeneracyjnych i in. Istnieją mechanizmy ochrony przed niekorzystnymi skutkami stresu oksydacyjnego. Należą do nich układy enzymatyczne i nieenzymatyczne. Do tych ostatnich zaliczają się m.in. białka szoku cieplnego (HSP). Dokładna ich rola i mechanizm działania są intensywnie badane w ostatnich latach. Hiperoksja i hiperbaria wpływa także na ekspresję i aktywność syntazy tlenku azotu (NOS). Jej produkt – tlenek azotu (NO) może reagować z reaktywnymi formami tlenu i przyczyniać się do rozwoju stresu nitrozacyjnego. NOS występuje w postaci izoform w różnych tkankach i w różny sposób reagujących na omawiane czynniki. Autorzy dokonali krótkiego przeglądu badań określających wpływ hiperoksji i hiperbarii na ekspresję HSP i aktywność NOS.
    Any stay in an environment with an increased oxygen content (a higher oxygen partial pressure, pO2) and an increased pressure (hyperbaric conditions) leads to an intensification of oxidative stress. Reactive oxygen species (ROS) damage the molecules of proteins, nucleic acids, cause lipid oxidation and are engaged in the development of numerous diseases, including diseases of the circulatory system, neurodegenerative diseases, etc. There are certain mechanisms of protection against unfavourable effects of oxidative stress. Enzymatic and non-enzymatic systems belong to them. The latter include, among others, heat shock proteins (HSP). Their precise role and mechanism of action have been a subject of intensive research conducted in recent years. Hyperoxia and hyperbaria also have an effect on the expression and activity of nitrogen oxide synthase (NOS). Its product - nitrogen oxide (NO) can react with reactive oxygen species and contribute to the development of nitrosative stress. NOS occurs as isoforms in various tissues and exhibit different reactions to the discussed factors. The authors have prepared a brief review of research determining the effect of hyperoxia and hyperbaria on HSP expression and NOS activity.
    Źródło:
    Polish Hyperbaric Research; 2017, 1(58); 41-50
    1734-7009
    2084-0535
    Pojawia się w:
    Polish Hyperbaric Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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