Prognostic value of quantitative-PCR versus serology for detection of CMV in pre- and post- transplantation patients

Two hundred-twenty six pre- and post- kidney transplantation patients were screened for CMV. They were categorized into three groups I: Eighty-five dialysis patients suffering from chronic renal failure, II: Sixty -two end stage renal disease patients prepared for transplantation, and III: Seventy-nine post-kidney transplant patients under immunosuppressive and cytotoxic therapy. The last group was subdivided according to clinical presentation into asymptomatic, mild, and invasive CMV disease subgroups. A control group comprised of fifty-two apparently healthy kidney and blood donors were also included. Serum and plasma samples were utilized for detection of anti-CMV antibodies by EIA, and determination of CMV viral load by quantitative-PCR respectively. QT-PCR results revealed high viral load; (4000-10.000 copy/ml) in 16 (100%) kidney recipient with invasive CMV disease, While only 4 (25%) of them were positive for IgM anti-CMV. Another ten patients with symptoms of CMV syndrome were found CMV-PCR positive with low viral load (436-3070 copy/ml) and all were negative for IgM anti-CMV. On the other hand, no CMV viral load was detectable among end-stage renal disease patients, although 6/62 (9.7%) were positive for IgM anti-CMV. All subjects were positive for IgG anti-CMV. It is concluded that QT-PCR rather than serology should be used for monitoring of CMV infection in pre- and post-transplantation patient.     

Retinol Binding Protein-4 Is Associated with TNF-α and Not Insulin Resistance in Subjects with Type 2 Diabetes Mellitus and Coronary Heart Disease

We studied the association between RBP4 and various markers related to insulin resistance and diabetic complications as well as inflammatory markers in Saudi population suffering from type 2 diabetes and coronary heart disease. Patients with type 2 diabetes were divided into 3 groups according to the type of treatment and involvement of coronary artery disease. Serum RBP4, TNF-α, insulin, CRP, resistin, leptin and adiponectin were analysed in all samples. RBP4 levels increased significantly in the group of diabetic subjects treated with oral hypoglycemic agents and diabetic patients with coronary heart disease (30.2 ± 11.8; 33.4 ± 13.6 respectively), while there was no significant change in the other group for diabetic subjects on low-carbohydrate diet (25.1 ± 10.9) compared to control group (22.6 ± 9.5). RPB4 levels were positively correlated with TNF-α in the group of diabetic subjects on oral hypoglycemic agents and diabetic patients with coronary heart disease (r = 0.52, P < 0.05; r = 0.58, P < 0.05 respectively). No correlations were found between RBP4 levels and insulin resistance in all studied groups. Our findings suggest that serum RBP4 levels is associated with pro-inflammatory cytokine (TNF-α) and is not associated with insulin resistance among patients with type 2 diabetes and coronary heart disease.     

Variants of endothelial nitric oxide synthase gene are associated with components of metabolic syndrome in an Arab population

Genetics plays a crucial role in the development of metabolic syndrome (MetS). Here we examined the association between endothelial nitric oxide synthase (eNOS) gene polymorphisms and MetS in a Saudi Arabian cohort to extend the understanding of the genetic basis of MetS in diverse ethnic populations. Anthropometric, clinical and biochemical parameters as well as genotyping for 894G>T, -786T>C variants of eNOS gene by PCR-RFLP and 4a/b by direct PCR were performed in 886 Saudi Arabians (477 MetS and 409 Non-MetS). The genotype distribution (TT, p=0.001; TC, p=0.001; TC+CC, p=0.001) and allele (T, p=0.007; C, p=0.007) frequency of the -786T>C SNP were significantly different between Non-MetS and MetS subjects which remained significant after Bonferroni correction. Moreover: 1) the GT and GT+TT genotypes of the 894G>T SNP were associated with elevated blood pressure (p=0.017, and p=0.022, respectively); 2) the ab variant of 4a/b polymorphism was associated with decreased HDL levels (p= 0.044); and 3) the TC+CC genotype and C allele of the -786T>C SNP were associated with increased fasting glucose levels (p=0.039, and p=0.028, respectively). Also, G-a-C was identified as the risk haplotype for MetS susceptibility (p=0.034). The results suggest a significant association of 894G>T, 4a/b and -786T>C polymorphisms with MetS and its components is present in an Arab population. A genetic predisposition to develop abnormal metabolic phenotypes, consistent with an increased prevalence of metabolic phenotypes can be detected in this ethnic group.     

Selected Dietary Nutrients and the Prevalence of Metabolic Syndrome in Adult Males and Females in Saudi Arabia: A Pilot Study

During the last decade, the rapid economic development in Saudi Arabia resulted in an unbalanced dietary intake pattern within the general population. Consequently, metabolic syndrome was also documented to be highly prevalent in the Middle-East region. We aimed to examine the relationship between selected dietary nutrient intakes and the prevalence of metabolic syndrome in the general adult population of Riyadh, Saudi Arabia. In this cross-sectional study, 185 adult Saudis aged 19 to 60 years (87 males and 98 females (mean age 35.6 ± 13.2 and 37.6 ± 11.7 years, respectively)) were included. The criteria for metabolic syndrome were based on the International Diabetes Foundation (IDF) criteria, and the dietary food intake was assessed by two 24-h dietary recall methods. The odd ratios (ORs) of metabolic syndrome risk across quartiles of selected dietary nutrients were significantly lower for carbohydrates and proteins, as well as for vitamins A, C, E and K, calcium, zinc and magnesium (p < 0.05 for all) in the female group with metabolic syndrome than those without. The pattern of daily dietary intake of selected nutrients among the general population of Saudi Arabia raises concern, and this dietary imbalance could increase the risk of metabolic syndrome, particularly in adult Saudi females.     

Fasting homocysteine levels in a cross-section of Saudi adults with type 1 diabetes mellitus

AimStudies have shown homocysteine to be an independent risk factor for atherosclerosis and CVD in both diabetic and non-diabetic subjects. However, the association between the levels of homocysteine and type 1 diabetes mellitus remains a controversial one. Our aim is to test this in a cross-section of the Saudi type 1 diabetics against non-diabetics to establish the relationship of homocysteine with regards to type 1 diabetics and non-diabetics.Materials and methodsA total of 97 subjects (41 males, 56 females) participated in this cross-sectional study done at the diabetic clinic of King Abdul-Aziz University Hospital Diabetic Centre, Riyadh, KSA. They were divided according to the presence of type 1 DM. Glycemic and lipid parameters were measured using routing procedures. Hcys was measured using photometric assay.ResultsAmong males, hcys levels were significantly lower among the diabetic subjects (p-value 0.03). Females with type 1 diabetes however have higher total cholesterol levels than their control counterparts (p-value 0.003). Among the control group, gender and HDL-cholesterol exhibited significant inverse relationships with hcys (p-values 0.028 and 0.032, respectively) and a strong positive association with body mass index (p-value 0.034). Among the diabetic group, only age was significantly associated with hcys (p-value 0.009).ConclusionIn the Arab population, hcys is decreased in IDDM subjects compared to non-diabetic subjects. Hcys was correlated to BMI and inversely associated to HDL-C among the non-diabetics. Further studies are needed to test the hypothesis in diabetics with disease complications.     

Knowledge,Perception, and Attitudes About Cancer and its Treatment Among Healthy Relatives of Cancer Patients: Single Institution Hospital-Based Study in Saudi Arabia

This study was conducted to assess knowledge, perception, and attitudes regarding cancer and treatment among healthy relatives of cancer patients who attended an outpatient cancer clinic with their relatives who suffer from cancers. The participants recruited in this cross-sectional, interview-based study were 846 (557 female and 289 male subjects) healthy relatives of cancer patients from the outpatient cancer clinic at King Abdulaziz University Hospital, Jeddah, Saudi Arabia. Most of the participants answered that they believed the causes of cancer were genetic (44.90 %), followed by environmental factors (30.10 %), diet (26.90 %), other causes (26.90 %), envy (26.90 %), and black magic (17.60 %). Most of the healthy participants believed that doctors should tell patients the full truth about the diagnosis (83.57 %). More than half of the healthy population stated that cancer patients should accept all types of treatment (chemotherapy and/or radiotherapy and/or surgery), with more male subjects having this position than females (P?=?0.014). Most of the participants believed that cancer cannot be caught from another person who suffered from cancer (67.50 %). Most of the participants believed that cancer education was sufficient (66.70 %), with a significant difference between male and female respondents (P?=?0.004). With regard to why cancer patients hide their disease, most of the participants in the age group <25 years believed that the causes were fear of loss of health insurance (56.20 %), followed by job loss (34.40 %), and then social stigma (9.40 %); in the age group between 25 and 45 years, the causes were fear of loss of health insurance (76.50 %), followed by social stigma (14.70 %), and then job loss (8.80 %); while in the age group >45 years, the reasons were job loss (47.10 %), followed by health insurance loss (41.20 %), and then social stigma (11.80 %), with a significant difference between groups (P?=?0.034). This study demonstrated that still a large number of healthy participants had deficient perceptions and poor attitudes about important issues concerning cancers such as different mode of treatments, alternative treatment, biological causes, and prognosis, particularly among male respondents. Prevention education strategies should be considered, including targeted approaches that aim to reduce disparities in cancer perception among the general population.     

Diabetes mellitus type 2 and other chronic non-communicable diseases in the central region,Saudi Arabia (riyadh cohort 2): a decade of an epidemic

Background

Follow-up epidemiologic studies are needed to assess trends and patterns of disease spread. No follow-up epidemiologic study has been done in the Kingdom of Saudi Arabia to assess the current prevalence of major chronic, noncommunicable diseases, specifically in the urban region, where modifiable risk factors remain rampant. This study aims to fill this gap.

Methods

A total of 9,149 adult Saudis ages seven to eighty years (5,357 males (58.6%) and 3,792 females (41.4%)) were randomly selected from the Riyadh Cohort Study for inclusion. Diagnosis of type 2 diabetes mellitus (DMT2) and obesity were based on the World Health Organization definitions. Diagnoses of hypertension and coronary artery disease (CAD) were based on the Seventh Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure and American Heart Association criteria, respectively.

Results

The overall crude prevalence of DMT2 was 23.1% (95% confidence interval (95% CI) 20.47 to 22.15). The age-adjusted prevalence of DMT2 was 31.6%. DMT2 prevalence was significantly higher in males, with an overall age-adjusted prevalence of 34.7% (95% CI 32.6 to 35.4), than in females, who had an overall age-adjusted prevalence of 28.6% (95% CI 26.7 to 29.3) (P < 0.001). The overall crude prevalence of obesity was 31.1% (95% CI 30.1 to 32.0). The age-adjusted prevalence of obesity was 40.0%. The prevalence of obesity was higher in females, with an overall prevalence of 36.5% (95% CI 35.1 to 37.83), than in males (25.1% (95% CI 23.7 to 26.3)) (P < 0.001). The age-adjusted prevalence of hypertension and CAD were 32.6% (95% CI 31.7 to 33.6) and 6.9% (95% CI 6.4 to 7.4), respectively.

Conclusion

Comparisons of our findings with earlier data show that the prevalence of DMT2, hypertension and CAD in Riyadh, Saudi Arabia, has alarmingly worsened. Aggressive promotion of public awareness, continued screening and early intervention are pivotal to boosting a positive response.

     

The atherogenic and metabolic impact of non-HDL cholesterol versus other lipid sub-components among non-diabetic and diabetic Saudis

Background  

Several trials from different populations have reported that non-high density lipoprotein cholesterol (non-HDL-C) has more predictive power than low-density lipoprotein cholesterol (LDL-C) in detecting coronary heart disease (CHD) and none in any Arab community whose propensity to develop CHD is higher compared to other ethnicities. This study aims to determine and compare the impact of non-HDL-C versus other lipid parameters, in predicting coronary heart disease among diabetic versus non-diabetic adult Saudis and identify the lipid parameters which make a significant contribution in the development of coronary heart disease, diabetes mellitus, and metabolic syndrome. 733 adult Saudis were recruited and divided into groups of diabetics and non-diabetics. Each participant completed a questionnaire, underwent physical exam including 12-L ECG, and submitted a fasting blood sample where glucose and lipid parameters were analyzed using routine procedures.