Vitamin d status and anthropometric indices of an omani study population.

Objectives: Serum 25-hydroxyvitamin D [25(OH)D] concentrations reflect vitamin D status, with deficiency implicated as causative of many diseases. This study assessed vitamin D status and anthropometric indices in a sample of healthy Omanis.

Methods: Serum 25(OH)D concentrations were measured by high performance liquid chromatography in 206 healthy Omanis, aged 18-55 years (mean age: men 31.

Nitric oxide and antioxidant enzymes in venous and cord blood of late preterm and term omani mothers.

Objectives: This study assessed the role of oxidative stress in parturition in Omani mothers following growing reports that late preterm neonates were at greater risk than term neonates of perinatal death.

Methods: Venous blood samples were collected during labour, and cord (neonatal) blood samples were taken after childbirth in late preterm and term from women at Sultan Qaboos University Hospital, Oman. Plasma nitric oxide (NO) concentrations, erythrocyte catalase (CAT).

Serum micronutrient and micromineral concentrations and ratios in healthy Omani subjects.

Objective: This study aimed to establish reference ranges of serum concentrations of copper, zinc, retinol, alpha-tocopherol, copper:caeruloplasmin and copper:zinc ratios in a group of healthy Omani men and women.

Materials And Methods: Assay techniques employed were atomic absorption spectrophotometry (copper and zinc), reverse-phase high-pressure liquid chromatography with isocratic elution (retinol and alpha-tocopherol), immunonephelometry (caeruloplasmin) and spectrophotometry (albumin and cholesterol).

Results: The mean +/- SD (microM) obtained for copper, zinc, retinol, and alpha-tocopherol were 15.

Erythrocyte indices, microminerals and ratios, antioxidants and lipids in Centrum Materna diet-supplemented Omani mothers.

Venous (maternal) and cord blood (neonatal) samples of Omani women who had a daily supplement of Centrum Materna multivitamin and multimineral tablet throughout pregnancy were investigated at late preterm (n=37) and at term (n=37) delivery for erythrocyte indices, micromineral, antioxidant, and lipid values. Hemoglobin (Hb), hematocrit (HCT), mean cell volume (MCV), red cell distribution width (RDW), copper (Cu), zinc (Zn), ceruloplasmin, erythrocyte Cu-Zn superoxide dismutase (Cu-Zn SOD), cholesterol, apolipoprotein (apo) A-I and apo B were measured by appropriate analytical systems. Cu/zinc and Cu/ceruloplasmin ratios were calculated.

Serum copper levels and not zinc are positively associated with serum leptin concentrations in the healthy adult population.

Leptin, the obesity gene protein product, is a hormone with multiple physiological functions in the human. However, there are few reports in the literature on its role in trace element metabolism in the normal population. Therefore, we investigated the association among serum leptin, zinc, copper, and zinc/copper ratio in 570 healthy men and women aged 15 yr and older.

Reference ranges of copper and zinc and the prevalence of their deficiencies in an Arab population aged 15-80 years.

Serum concentrations of copper and zinc were measured by flame atomic absorption spectrophotometry in 560 Kuwaitis aged from 15 to 80 yr who were in apparent good health to establish reference ranges and determine the prevalence of the deficiency of the trace metals. Zinc/copper ratios were derived by calculation. Because the mean +/- SD (microM) for copper in females (24.

Serum microminerals and the indices of lipid metabolism in an apparently healthy population.

Serum copper and zinc concentrations were measured in 560 apparently healthy Kuwaitis (238 males and 322 females) aged 15-80 years to assess micromineral effect on the indices of lipid metabolism. Following the recommended guidelines of the European Atherosclerosis Society (EAS) and the National Cholesterol Education Program Expert Panel (NCEPEP), the incidence of dyslipidemia was assessed from enzymatic assay data of triglycerides (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C) concentrations. Males had significantly lower TC (P=0.

Activities of erythrocyte antioxidant enzymes in cancer patients.

We measured the activities of erythrocyte superoxide dismutase (SOD) and glutathione peroxidase (GPX) before therapy in 97 patients with cancer in various sites (gastrointestinal tract (GIT) (n=40), breast (n=30), and others (n=27)), and in 60 matched controls to assess antioxidant enzyme protection. Hemolysate hemoglobin (Hb) was measured spectrophotometrically. The activity of SOD (U/g Hb) was significantly lower in all sites (when all the cancer sites were considered as a group), GIT, breast, and other sites compared to the controls (P<0.

Serum concentrations of micronutrient antioxidants in an adult Arab population.

Serum concentrations of retinol, alpha-tocopherol, beta-carotene and lycopene were measured by reversed-phase high-performance liquid chromatography (r-P HPLC) in 260 randomly selected healthy adult Kuwaitis (159 men and 101 women) aged 18-63 years (mean 33.3 years) to established reference ranges of the micronutrient antioxidants. Total cholesterol concentrations were assayed by an enzymatic method to determine alpha-tocopherol: cholesterol ratios.