Prostaglandin F2α metabolite and F2-isoprostane excretion rates in migraine

2001 ◽  
Vol 102 (1) ◽  
pp. 39-43 ◽  
Author(s):  
Johanna HELMERSSON ◽  
Peter MATTSSON ◽  
Samar BASU
Keyword(s):  
Oxidative Stress ◽  
Migraine Attack ◽  
Prostaglandin F2α ◽  
Urine Samples ◽  
Menopausal Women ◽  
The Mean ◽  
Post Menopausal ◽  
Excretion Rates ◽  
And Control ◽  
And Oxidative Stress

The pathophysiology theory of migraine postulates a local, neurogenic inflammation and the possible involvement of oxidative stress. We analysed the levels of 15-oxo-dihydro-prostaglandin F2α (a metabolite of prostaglandin F2α) and 8-iso-prostaglandin F2α (a major isoprostane), which are biomarkers for inflammation and oxidative stress respectively, in urine from 21 patients with migraine, with and without aura. Urine samples from migraine patients were collected during a migraine attack, and control samples were collected from the same subjects on a migraine-free morning. The mean basal levels of 15-oxo-dihydro-prostaglandin F2α and 8-iso-prostaglandin F2α in the morning control urine samples were 0.54±0.11 and 0.31±0.13nmol/mmol of creatinine respectively. The mean levels of 15-oxo-dihydro-prostaglandin F2α and 8-iso-prostaglandin F2α in the urine samples collected during the migraine attack in the 21 patients were 0.53±0.13 and 0.32±0.11nmol/mmol of creatinine respectively. Thus there were no differences in the 15-oxo-dihydro-prostaglandin F2α and 8-iso-prostaglandin F2α excretion rates during the migraine attack compared with on the migraine-free day. However, the basal 8-iso-prostaglandin F2α excretion levels on the migraine-free day were significantly lower in pre-menopausal women (0.24±0.08nmol/mmol of creatinine, n = 11) compared with post-menopausal women (0.39±0.14nmol/mmol of creatinine; n = 7; P = 0.009). In conclusion, in this study we found no support for the involvement of inflammation and oxidative stress in migraine pathophysiology. Our results indicate, however, a lower level of oxidative stress in pre-menopausal compared with post-menopausal women.

scholarly journals Tamoxifen and oxidative stress: an overlooked connection

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Nermin S. Ahmed ◽  
Marek Samec ◽  
Alena Liskova ◽  
Peter Kubatka ◽  
Luciano Saso
Keyword(s):  
Breast Cancer ◽  
Oxidative Stress ◽  
Gold Standard ◽  
Pharmacological Activities ◽  
Standard Drug ◽  
Menopausal Women ◽  
Wide Range ◽  
Post Menopausal ◽  
Apoptotic Effects ◽  
And Oxidative Stress

AbstractTamoxifen is the gold standard drug for the treatment of breast cancer in pre and post-menopausal women. Its journey from a failing contraceptive to a blockbuster is an example of pharmaceutical innovation challenges. Tamoxifen has a wide range of pharmacological activities; a drug that was initially thought to work via a simple Estrogen receptor (ER) mechanism was proven to mediate its activity through several non-ER mechanisms. Here in we review the previous literature describing ER and non-ER targets of tamoxifen, we highlighted the overlooked connection between tamoxifen, tamoxifen apoptotic effects and oxidative stress.

scholarly journals Maternal Urinary Metal and Metalloid Concentrations in Association with Oxidative Stress Biomarkers

Antioxidants ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 114
Author(s):  
Pahriya Ashrap ◽  
Deborah J. Watkins ◽  
Ginger L. Milne ◽  
Kelly K. Ferguson ◽  
Rita Loch-Caruso ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Prostaglandin F2α ◽  
Urine Samples ◽  
Oxidative Stress Marker ◽  
Essential Metals ◽  
Male Fetus ◽  
Metal Concentrations ◽  
Fetal Sex ◽  
Wide Range ◽  
And Oxidative Stress

Metal exposure has been associated with a wide range of adverse birth outcomes and oxidative stress is a leading hypothesis of the mechanism of action of metal toxicity. We assessed the relationship between maternal exposure to essential and non-essential metals and metalloids in pregnancy and oxidative stress markers, and sought to identify windows of vulnerability and effect modification by fetal sex. In our analysis of 215 women from the PROTECT birth cohort study, we measured 14 essential and non-essential metals in urine samples at three time points during pregnancy. The oxidative stress marker 8-iso-prostaglandin F2α (8-iso-PGF2α) and its metabolite 2,3-dinor-5,6-dihydro-15-15-F2t-IsoP, as well as prostaglandin F2α (PGF2α), were also measured in the same urine samples. Using linear mixed models, we examined the main effects of metals on markers of oxidative stress as well as the visit-specific and fetal sex-specific effects. After adjustment for covariates, we found that a few urinary metal concentrations, most notably cesium (Cs) and copper (Cu), were associated with higher 8-iso-PGF2α with effect estimates ranging from 7.3 to 14.9% for each interquartile range, increase in the metal concentration. The effect estimates were generally in the same direction at the three visits and a few were significant only among women carrying a male fetus. Our data show that higher urinary metal concentrations were associated with elevated biomarkers of oxidative stress. Our results also indicate a potential vulnerability of women carrying a male fetus.

Effect of 1-year dietary supplementation with vitaminized olive oil on markers of bone turnover and oxidative stress in healthy post-menopausal women

Endocrine ◽  
2015 ◽  
Vol 50 (2) ◽  
pp. 326-334 ◽  
Author(s):  
Laura Mazzanti ◽  
Maurizio Battino ◽  
Laura Nanetti ◽  
Francesca Raffaelli ◽  
Alessandro Alidori ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Bone Turnover ◽  
Olive Oil ◽  
Dietary Supplementation ◽  
Menopausal Women ◽  
Markers Of Bone Turnover ◽  
Post Menopausal ◽  
And Oxidative Stress

Evaluation of Salivary Antioxidants and Oxidative Stress Markers in Male Smokers

2019 ◽  
Vol 22 (7) ◽  
pp. 496-501
Author(s):  
Fatemeh Ahmadi-Motamayel ◽  
Parisa Falsafi ◽  
Hamidreza Abolsamadi ◽  
Mohammad T. Goodarzi ◽  
Jalal Poorolajal
Keyword(s):  
Oxidative Stress ◽  
Uric Acid ◽  
Free Radicals ◽  
Antioxidant Capacity ◽  
Cigarette Smoke ◽  
Total Antioxidant Capacity ◽  
The Body ◽  
Total Antioxidant ◽  
The Mean ◽  
And Oxidative Stress

Background: Cigarette smoke free radicals can cause cellular damage and different diseases. All the body fluids have antioxidants which protect against free radicals. Objective: The aim of this study was to evaluate salivary total antioxidant capacity and peroxidase, uric acid and malondialdehyde levels in smokers and a nonsmoking control group. Methods: Unstimulated saliva was collected from 510 males. A total of 259 subjects were current smokers and 251 were non-smokers. The levels of salivary total antioxidant capacity, uric acid, peroxidase and malondialdehyde were measured using standard procedures. Data were analyzed with t test and ANOVA. Results: The smokers were younger and dental hygiene index was higher than healthy nonsmoking controls. The mean total antioxidant capacity in smokers and nonsmokers was 0.13±0.07 and 0.21±011, respectively (P=0.001). Smokers had significantly lower peroxidase and uric acid levels than healthy controls. In addition, the mean malondialdehyde levels in the smokers and nonsmokers were 4.55 ±2.61 and 2.79 ±2.21, respectively (P=0.001). Conclusion: Cigarette smoke produces free radical and oxidative stress, causing many side effects. Salivary antioxidant levels decreased and malondialdehyde levels increased in smokers, indicating the high oxidative stress among smokers compared to nonsmokers. Cigarette smoke had deleterious effects on main salivary antioxidants levels.

Glycerol prevents loss of immunoreactive follicle-stimulating hormone and luteinizing hormone from frozen urine

1983 ◽  
Vol 98 (3) ◽  
pp. 381-384 ◽  
Author(s):  
J. H. Livesey ◽  
H. K. Roud ◽  
M. G. Metcalf ◽  
R. A. Donald
Keyword(s):  
Luteinizing Hormone ◽  
Follicle Stimulating Hormone ◽  
Urine Samples ◽  
Initial Value ◽  
Menopausal Women ◽  
Post Menopausal ◽  
Stimulating Hormone

First morning urine samples were collected from both menstruant and post-menopausal women and stored at −25 °C. Immunoreactive FSH disappeared from these samples (t½ = 30 days), ultimately stabilizing at about 20% of the initial value. The loss was more rapid at −20 °C and less rapid at −55 °C and +4°C. Immunoreactive LH was also lost from frozen urine, but more slowly than FSH. The addition of glycerol to urine (0·52 mol/l) stored at −25 °C prevented loss of immunoreactive FSH and LH for at least 105 days.

scholarly journals Urinary Biomarkers of Inflammation and Oxidative Stress Are Elevated in Obese Children and Correlate with a Marker of Endothelial Dysfunction

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Vaithinathan Selvaraju ◽  
Priscilla Ayine ◽  
Moni Fadamiro ◽  
Jeganathan Ramesh Babu ◽  
Michael Brown ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Childhood Obesity ◽  
Endothelial Dysfunction ◽  
Urine Samples ◽  
Low Grade ◽  
Oxidative Stress Markers ◽  
Obese Children ◽  
Stress Markers ◽  
Oxidative Markers ◽  
And Oxidative Stress

Obesity is a state of chronic low-level inflammation closely associated with oxidative stress. Childhood obesity is associated with endothelial dysfunction, inflammation, and oxidative stress markers individually. This study was aimed at determining the association between the biomarkers of inflammation, oxidative stress, and endothelial dysfunction in urine samples of healthy, overweight, and obese children. Eighty-eight elementary school children aged between 6 and 10 years participated in this study. Anthropometric measurements were measured using WHO recommendations. The biomarkers of low-grade inflammation such as C-reactive protein (CRP), interleukin-6 (IL-6), and α-1-acid glycoprotein (AGP); oxidative stress markers such as 8-isoprostane and 8-hydroxy-2′-deoxyguanosine (8-OHdG); and endothelin-1 (ET-1) were analyzed in urine samples. The area under the curve (AUC) by the receiver operating characteristics (ROC) was analyzed to identify the best urinary biomarker in childhood obesity. Linear regression and Pearson correlation were analyzed to determine the association between the parameters. The obese participants have significantly increased levels of CRP, AGP, IL-6, and 8-isoprostane compared to normal-weight participants. The overweight participants had significantly increased levels of ET-1 and 8-OHdG but not the obese group compared to the NW group. The AUC for urinary CRP (AUC: 0.847, 95% CI: 0.765-0.930; p<0.0001) and 8-isoprostane (AUC: 0.857, 95% CI: 0.783-0.932; p<0.0001) showed a greater area under ROC curves compared to other inflammatory and oxidative markers. The urinary CRP and 8-isoprostane significantly correlated with the obesity measures (body mass index, waist circumference, and waist-to- height ratio) and ET-1, inflammatory, and oxidative markers. The increased urinary inflammatory markers and 8-isoprostane can serve as a noninvasive benchmark for early detection of the risk of developing cardiovascular disease.

STUDIES ON THE INFLUENCE OF AGE ON OESTROGENS IN POST-MENOPAUSAL WOMEN WITH ATROPHIC ENDOMETRIUM AND NORMAL LIVER FUNCTION

1969 ◽  
Vol 62 (3) ◽  
pp. 461-467 ◽  
Author(s):  
B.-J. Procopé ◽  
H. Adlercreutz
Keyword(s):  
Age Groups ◽  
Normal Liver ◽  
Time Lapse ◽  
Mean Value ◽  
Vaginal Smear ◽  
Normal Liver Function ◽  
Menopausal Women ◽  
The Mean ◽  
Post Menopausal ◽  
Considerable Individual Variation

ABSTRACT A group of 104 post-menopausal women, who were at least 50 years old and with a time lapse of at least 2 years since the last menstruation, were investigated for their urinary oestrogen content. All the women had an atrophic endometrium as judged by histological investigation of a biopsy specimen. In 66 of the subjects the mean value of the karyopyknotic and eosinophilic indices in the vaginal smear was also calculated. The women, whose ages ranged from 50 to 79 years, were divided into 6 age groups. The median values for the excretion of oestrone, oestradiol, oestriol and total oestrogens and the mean karyopyknotic and eosinophilic indices for all age groups were very constant though there was considerable individual variation. It was also shown that the median values for all subjects were practically identical with those of 57 ovariectomized women reported in a previous study. It is concluded that in the majority of post-menopausal women with atrophic endometrium the ovarian contribution to the production of oestrogens is insignificant. It can also be concluded that with increasing age the normal liver does not significantly change the metabolism of oestrogens in post-menopausal women, as judged by the excretion of oestrone, oestradiol and oestriol, and the oestrogenic effect on the vaginal smear.

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