Measurement of the total antioxidant response in preeclampsia with a novel automated method

Harma, Mehmet; Harma, Müge; Erel, Özcan

doi:10.1016/j.ejogrb.2004.04.012

Cited by 123 publications

(103 citation statements)

References 24 publications

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“…In the present study, there was no significant difference between the BD and the control groups in the levels of albumin, bilirubin and uric acid. It has also been reported that bilirubin is not correlated with TAR (Harma et al 2005). In the present study, TAR level did not correlate with any of these antioxidants.…”

Section: Discussioncontrasting

confidence: 62%

“…As a reciprocal measure, the lipid hydroperoxides (LOOHs) and total peroxide (TP) levels in the same serum samples were also measured to evaluate oxidant status. The ratio of the serum TP level to the TAR level was regarded as the oxidative stress index (OSI) (Harma et al 2005).…”

confidence: 99%

“…The ratio of the TP to the total antioxidant potential gave the OSI, an indicator of the degree of oxidative stress (Harma et al 2005).…”

Section: Oxidative Stress Index (Osi)mentioning

confidence: 99%

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Decreased Total Antioxidant Response and Increased Oxidative Stress in Behcet's Disease

Işık

Koca

Üstündağ

et al. 2007

Tohoku J. Exp. Med.

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Behcet's disease (BD) is a chronic systemic inflammatory disease. Inflammatory reactions trigger the oxidative stress and oxidants decrease the level of antioxidants. In the present study, we aimed to determine serum oxidative/antioxidative status in patients with BD. Serum antioxidative status was evaluated by measuring total antioxidant capacity (TAC), paraoxonase 1, arylesterase, sulfhydryl groups and ceruloplasmin in patients with BD and in healthy controls. Serum oxidative status was evaluated by measuring total peroxide (TP), lipid hydroperoxides and oxidative stress index (OSI). OSI was calculated by percent ratio of TP to TAC. Serum levels of TAC, sulfhydryl groups and activities of paraoxonase 1, arylesterase, and ceruloplasmin were significantly lower in patients than in controls ( p < 0.001 for all). In contrast, TP, lipid hydroperoxides and OSI values were significantly higher in patients than in controls ( p < 0.001 for all). Further, the level of TAC was negatively correlated with the levels of TP, lipid hydroperoxides and OSI both in the BD (r = −0.578, p < 0.01; r = −0.559, p < 0.01 and r = −0.552, p < 0.01, respectively) and the control groups (r = −0.469, p < 0.05; r = −0.351, p < 0.05 and r = −0.391, p < 0.05, respectively). These results indicate that the oxidant parameters increased and antioxidant parameters decreased in patients with BD; therefore, these patients might have been exposed to oxidative stress. We suggest that impaired oxidant/ antioxidant balance should be taken into consideration in the follow-up of patients with BD.

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Section: Discussioncontrasting

confidence: 62%

confidence: 99%

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Decreased Total Antioxidant Response and Increased Oxidative Stress in Behcet's Disease

Işık

Koca

Üstündağ

et al. 2007

Tohoku J. Exp. Med.

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“…It is also regarded as a representative measure of the true balance between reactive oxygen species and antioxidant defense (146 (151) and decreases (152) in plasma/serum antioxidant capacity compared to normal pregnancy. This is partly because the antioxidant capacity result depends upon which free radicals or oxidants are used in the measurements (153).…”

Section: Antioxidant Indicesmentioning

confidence: 99%

The decidual suction method: a new way of collecting decidual tissue for functional and morphological studies

Harsem¹,

Staff²,

et al. 2004

Acta Obstet Gynecol Scand

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Background. Studies of extravillous trophoblasts and placental bed spiral arteries are essential for a better understanding of pathological pregnancies such as preeclampsia, intrauterine growth restriction and diabetes mellitus. A major challenge is to obtain representative and sufficient tissue for morphological and functional investigations. Currently, tissue material is mostly harvested by placental bed biopsy (PBB). We describe a new suction method to obtain a larger volume of decidual tissue from the placental bed. Methods. Tissue was harvested in 51 cesarean sections by vacuum suction of the placental bed. Sections from formalin‐fixed, paraffin‐embedded tissue were routinely stained with hematoxylin and eosin (H&E), immunostained with a panel of antibodies and morphologically examined for the presence of trophoblasts and spiral arteries. The results were compared with those from archive material from PBBs and placental basal plate sections (BPSs). Short‐term adverse events were registered for the study patients. Long‐term complications were registered from medical charts of 151 women having undergone the decidual suction method (DSM), with a follow‐up of 38–60 months. Results. In 86% (n = 44), one random section from the decidual suction material demonstrated at least one spiral artery. In 37% (n = 19), six or more spiral arteries were present. All sections revealed extravillous trophoblasts. No short‐ or long‐term morbidity was recorded. Conclusions. The decidual suction method represents an important improvement in the work to obtain sufficient decidual tissue for morphological and functional studies of extravillous trophoblast function and spiral artery adaptation. The method is safe, as no short‐ or long‐term complications were registered.

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“…Oxidative stress assays: TP and LPO were measured according to the methods of Harma et al (2005) and Ohkawa et al (1979), respectively. NO was assayed by Griess reagent according to the method of Ding et al (1988).…”

Section: Methodsmentioning

confidence: 99%

Pathogenicity and oxidative stress in Nile tilapia caused by Aphanomyces laevis and Phoma herbarum isolated from farmed fish

Ali¹,

Hashem²,

Al-Salahy³

2011

Dis. Aquat. Org.

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Identified (n = 17) and unidentified (n = 1) fish-pathogenic fungal species from 10 genera of Oomycetes and soil fungi were isolated from 40 infected freshwater fish samples of the species Oreochromis niloticus niloticus (Nile tilapia) and Clarias gariepinus (African catfish). Samples were collected from various fish farms in the Nile Delta, Egypt. Nile tilapia were tested in aquaria for their susceptibility to the commonest Oomycetes species, Aphanomyces laevis and Achlya klebsiana, and also against the 2 most prevalent pathogenic soil fungi, Paecilomyces lilacinus and Phoma herbarum. Two techniques were used: water bath exposure and intramuscular (subcutaneous) injection. Water bath exposure to the 2 species of Oomycetes caused greater mortalities of O. niloticus niloticus than intramuscular injection, but the reverse was true of the soil fungal species. Regardless of the infection method, the 2 Oomycetes species were more potent pathogens than the soil fungal species. In both gills and mytomal muscles of fish infected by A. laevis and P. herbarum, we measured and compared with controls the oxidative stress parameters total peroxide (TP), lipid peroxidation (LPO) and nitric oxide (NO), as well as levels of the antioxidants vitamin E and glutathione (GSH), and superoxide dismutase (SOD) and catalase (CAT) activities. Infection by these 2 fungal species through either spore suspension or spore injection significantly increased oxidative damage in gills and induced marked decrease in most studied antioxidants. In addition, both routes showed similar effects and A. laevis depressed the antioxidants CAT, vitamin E and GSH more than P. herbarum.

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Measurement of the total antioxidant response in preeclampsia with a novel automated method

Cited by 123 publications

References 24 publications

Decreased Total Antioxidant Response and Increased Oxidative Stress in Behcet's Disease

Decreased Total Antioxidant Response and Increased Oxidative Stress in Behcet's Disease

The decidual suction method: a new way of collecting decidual tissue for functional and morphological studies

Pathogenicity and oxidative stress in Nile tilapia caused by Aphanomyces laevis and Phoma herbarum isolated from farmed fish

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