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Wyszukujesz frazę "Pon1" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
The relation of PON1-L55M gene polymorphism and clinical manifestation of Behcets disease
Autorzy:
Dursun, Ahmet
Cicek, Salih
Keni, Fatih
Karakas-Celik, Sevim
Sezer, Tuna
Altinyazar, Cevdet
Powiązania:
https://bibliotekanauki.pl/articles/1039286.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
PON1 gene
Polymorphism
Behçet's disease
Opis:
Purpose: Behçet's disease is a multisystem disease characterized by recurrent oral and genital ulcers, relapsing uveitis, mucocutaneous, articular, gastrointestinal, neurologic, and vascular manifestations. Paraoxonase is believed to play an important role in protection of LDL and HDL particles from oxidation, in antioxidant effect against lipid peroxidation on cellular membranes, and in anti-inflammatory process. Lipid peroxidation and free oxygen radicals have been thought to play a role in pathogenesis of BD. The association of paraoxonase gene polymorphisms with Behçet's Disease in a group of Turkish patients with clinical manifestations and healthy controls has been investigated. Patients and Methods: Paraoxonase (PON-1-L55M) gene polymorphism was investigated in 50 Behcet patients and 50 healthy individuals with a PCR/RFLP method. Results: There were significant differences between patients and the control group in allele frequencies of the PON1 L55M polymorphism (p=0.04). Also, when patients were compared with the control group according to clinical manifestations, this statistical significance was getting sharper. Compared with the PON55 L allele, the M allele was associated with greater than 3.5 fold (OR 3.5, 95% CI 1.3-8.9) increased risk of ocular (OR 2.4, 95% CI 1.1-5.3), 2.4 fold joint and 3.1 fold (OR 3.1, 95% CI 1.1-8.4) central nervous system manifestations of BD. Conclusion The PON L55M gene polymorphism seemed to play a role in the pathogenesis of BD.
Źródło:
Acta Biochimica Polonica; 2014, 61, 2; 271-274
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Paraoxonase 1 and dietary hyperhomocysteinemia modulate the expression of mouse proteins involved in liver homeostasis
Autorzy:
Suszyńska-Zajczyk, Joanna
Jakubowski, Hieronim
Powiązania:
https://bibliotekanauki.pl/articles/1039222.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Pon1
high-methionine diet
hyperhomocysteinemia
mouse liver proteome
Opis:
Homocysteine (Hcy), a product of methionine metabolism, is elevated by the consumption of a high-methionine diet that can cause fatty liver disease. Paraoxonase 1 (Pon1), a hydrolase expressed mainly in the liver and carried in the circulation on high-density lipoprotein, participates in Hcy metabolism. Low Pon1 activity is linked to fatty liver disease. We hypothesize that hyperhomocysteinemia and low Pon1 induce changes in gene expression that could impair liver homeostasis. To test this hypothesis, we analyzed the liver proteome of Pon1-/- and Pon1+/+ mice fed a high methionine diet (1% methionine in the drinking water) for 8 weeks using 2D IEF/SDS-PAGE gel electrophoresis and MALDI-TOF mass spectrometry. We identified seven liver proteins whose expression was significantly altered in Pon1-/- mice. In animals fed with a control diet, the expression of three liver proteins involved in lipoprotein metabolism (ApoE), iron metabolism (Ftl), and regulation of nitric oxide generation (Ddah1) was up-regulated by the Pon1-/- genotype. In mice fed with a high-methionine diet, expression of four liver proteins was up-regulated and of three proteins was down-regulated by the Pon1-/- genotype. The up-regulated proteins are involved in lipoprotein metabolism (ApoE), energy metabolism (Atp5h), oxidative stress response (Prdx2), and nitric oxide regulation (Ddah1). The down-regulated proteins are involved in energy metabolism (Gamt), iron metabolism (Ftl), and catechol metabolism (Comt). Expression of one protein (Ftl) was up-regulated both by the Pon1-/- genotype and a high-methionine diet. Our findings suggest that Pon1 interacts with diverse cellular processes - from lipoprotein metabolism, nitric oxide regulation, and energy metabolism to iron transport and antioxidant defenses - that are essential for normal liver homeostasis and modulation of these interactions by a high-methionine diet may contribute to fatty liver disease.
Źródło:
Acta Biochimica Polonica; 2014, 61, 4; 815-823
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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