37 research outputs found
Associations between the LEP -2548G/A Promoter and Baseline Weight and between LEPR Gln223Arg and Lys656Asn Variants and Change in BMI z Scores in Arab Children and Adolescents Treated with Risperidone
Data on baseline (antipsychotic-naïve) age, weight, and height and change in these over three subsequent follow up time points up to 313.6 days (CI 303.5-323.7), were collected from 181 risperidone-treated children and adolescents (mean age 12.58 years, SD 4.99, range 2.17-17.7) attending a pediatric neurology clinic in Saudi Arabia. Owing to differences in genotypic distributions in subsamples, results are reported from the white Arabs (N=144). Age and gender-normed BMI-standardised z scores (BMI z) were calculated (lmsgrowth program). Linear regression was performed for baseline weight and BMI z, while change in BMI z was assessed using random effects ordered logistic regression. The following SNPs were analyzed: rs7799039 in the LEP promoter, rs1805094 (previously rs8179183), rs1137100 and rs1137101 in the LEPR, and rs1414334 in HTR2C. We found a nominally significant association between rs7799309 and baseline weight, adjusting for height, age, gender and diagnosis (A/G, P=0.035, β=-3.62, compared to G/G). rs1137101 (G/G, P=0.018, OR=4.13 compared to A/A) and rs1805094 C-allele carriers (P=0.019, OR=0.51) showed nominally significant associations with change in BMI z categories. Our data support and replicate previous relevant associations for these variants including with weight gain on risperidone, whilst being the first to report such associations in those of Arab ethnicity
Knowledge and perceptions of diabetes in a semi-urban Omani population
<p>Abstract</p> <p>Background</p> <p>Diabetes mellitus is a major public health problem in the Sultanate of Oman. This study aimed to evaluate the knowledge and perception of diabetes in a sample of the Omani general population, and the associations between the elements of knowledge and perception, and socio-demographic factors.</p> <p>Methods</p> <p>The study was carried out in two semi-urban localities. A total of 563 adult residents were interviewed, using a questionnaire specifically designed for the present study. In addition to demographic information, the questionnaire contained questions on knowledge related to diabetes definition, symptoms, risk factors, complications and preventative measures, as well as risk perception for diabetes.</p> <p>Results</p> <p>Knowledge of diabetes was suboptimal. The percentages of correct responses to questions on diabetes definition, classical symptoms, and complications were 46.5%, 57.0%, and 55.1%, respectively. Only 29.5%, 20.8% and 16.9% identified obesity, physical inactivity and a positive family history, respectively, as risk factors for diabetes. A higher level of education, a higher household income, and the presence of a family history of diabetes were found to be positively associated with more knowledge.</p> <p>Conclusion</p> <p>This study demonstrated that there is lack of awareness of major risk factors for diabetes mellitus. Level of education is the most significant predictor of knowledge regarding risk factors, complications and the prevention of diabetes. Given that the prevalence of diabetes has increased drastically in Oman over the last decade, health promotion seems essential, along with other means to prevent and control this emerging health problem.</p
Comparing the Performance of Ground Filtering Algorithms for Terrain Modeling in a Forest Environment Using Airborne LiDAR Data
Diversity, distribution and conservation of the terrestrial reptiles of Oman (Sauropsida, Squamata)
All authors:
Salvador Carranza ,
Meritxell Xipell,
Pedro Tarroso,
Andrew Gardner,
Edwin Nicholas Arnold,
Michael D. Robinson,
Marc Simó-Riudalbas,
Raquel Vasconcelos,
Philip de Pous,
Fèlix Amat,
Jiřà ŠmÃd,
Roberto Sindaco,
Margarita Metallinou †,
Johannes Els,
Juan Manuel Pleguezuelos,
Luis Machado,
David Donaire,
Gabriel MartÃnez,
Joan Garcia-Porta,
Tomáš Mazuch,
Thomas Wilms,
Jürgen Gebhart,
Javier Aznar,
Javier Gallego,
Bernd-Michael Zwanzig,
Daniel Fernández-Guiberteau,
Theodore Papenfuss,
Saleh Al Saadi,
Ali Alghafri,
Sultan Khalifa,
Hamed Al Farqani,
Salim Bait Bilal,
Iman Sulaiman Alazri,
Aziza Saud Al Adhoobi,
Zeyana Salim Al Omairi,
Mohammed Al Shariani,
Ali Al Kiyumi,
Thuraya Al Sariri,
Ahmed Said Al Shukaili,
Suleiman Nasser Al Akhzami.In the present work, we use an exceptional database including 5,359 records of 101 species of Oman’s terrestrial reptiles together with spatial tools to infer the spatial patterns of species richness and endemicity, to infer the habitat preference of each species and to better define conservation priorities, with especial focus on the effectiveness of the protected areas in preserving this unique arid fauna. Our results indicate that the sampling effort is not only remarkable from a taxonomic point of view, with multiple observations for most species, but also for the spatial coverage achieved. The observations are distributed almost continuously across the two-dimensional climatic space of Oman defined by the mean annual temperature and the total annual precipitation and across the Principal Component Analysis (PCA) of the multivariate climatic space and are well represented within 17 out of the 20 climatic clusters grouping 10% of the explained climatic variance defined by PC1 and PC2. Species richness is highest in the Hajar and Dhofar Mountains, two of the most biodiverse areas of the Arabian Peninsula, and endemic species richness is greatest in the Jebel Akhdar, the highest part of the Hajar Mountains. Oman’s 22 protected areas cover only 3.91% of the country, including within their limits 63.37% of terrestrial reptiles and 50% of all endemics. Our analyses show that large areas of the climatic space of Oman lie outside protected areas and that seven of the 20 climatic clusters are not protected at all. The results of the gap analysis indicate that most of the species are below the conservation target of 17% or even the less restrictive 12% of their total area within a protected area in order to be considered adequately protected. Therefore, an evaluation of the coverage of the current network of protected areas and the identification of priority protected areas for reptiles using reserve design algorithms are urgently needed. Our study also shows that more than half of the species are still pending of a definitive evaluation by the International Union for Conservation of Nature (IUCN).This work was funded by grants CGL2012-36970, CGL2015-70390-P from the Ministerio de EconomÃa y Competitividad, Spain (cofunded by FEDER) to SC, the project Field study for the conservation of reptiles in Oman, Ministry of Environment and Climate Affairs, Oman (Ref: 22412027) to SC and grant 2014-SGR-1532 from the Secretaria d'Universitats i Recerca del Departament d'Economia i Coneixement de la Generalitat de Catalunya to SC. MSR is funded by a FPI grant from the Ministerio de EconomÃa y Competitividad, Spain (BES-2013-064248); RV, PT and LM were funded by Fundação para a Ciência e Tecnologia (FCT) through post-doc grants (SFRH/BPD/79913/2011) to RV, (SFRH/BPD/93473/2013) to PT and PhD grant (SFRH/BD/89820/2012) to LM, financed by Programa Operacional Potencial Humano (POPH) – Quadro de Referência Estrategico Nacional (QREN) from the European Social Fund and Portuguese Ministerio da Educação e Ciência
Assessment of vitamin D intake among Libyan women - adaptation and validation of specific food frequency questionnaire
Vitamin D deficiency (VDD) has pandemic proportions worldwide. Numerous studies report on high prevalence of VDD in sunny regions like Near East and North Africa (NENA). Previous studies indicated that Libyan population was at risk of VDD. To contribute to the body of evidence, measurement of vitamin D status on children, adults, in Misurata region was conducted, and confirmed with validated dietary intake study. Serum 25(OH)D was analysed using electrochemiluminescence protein binding assay. Existing Food Frequency Questionnaires (FFQ) were adapted to Libyan Women Food Frequency Questionnaire (LW-FFQ). Repeated 24h dietary recalls and LW-FFQ were employed in vitamin D intake evaluation. LW-FFQ was validated using 24h dietary recall and vitamin D status as referent methods. The questionnaires included anthropometry and lifestyle information. Vitamin D status assessment revealed inadequate levels (25(OH)D lt 50nmol/l) in almost 80% of participants. Women (25-64y) were identified as the most vulnerable group with vitamin D inadequacy present in 82% (61.6% had 25(OH)D lt 25nmol/l, and 20.2% had 25-50nmol/l 25(OH)D). Average Vitamin D intake within the study sample (n=316) was 3.9 +/- 7.9 mu g/d, with 92% participants below both Institute of Medicine (IOM) (10 mu g/d) and European Food Safety Authority (15 mu g/d) recommendations. Measured vitamin D status, in 13% of this group, correlated significantly (p=0.015) with intake estimates. Based on self-report, consumption of vitamin D supplements does not exist among study participants. Additional lifestyle factors influencing vitamin D status were analysed. Only 2% of study participants spend approximately 11 min on the sun daily, 60.4% were obese, 23.1% were overweight and 71.2% reported low physical activity. These findings confirm previous reports on high prevalence of VDD in women across NENA, and in Libya. The situation calls for multi-sectoral actions and public health initiatives to address dietary and lifestyle habits
Prevalence and risk factors of intestinal parasitism among two indigenous sub-ethnic groups in Peninsular Malaysia
Identification and Characterization of Microsporidia from Fecal Samples of HIV-Positive Patients from Lagos, Nigeria
BACKGROUND: Microsporidia are obligate intracellular parasites that infect a broad range of vertebrates and invertebrates. They have been increasingly recognized as human pathogens in AIDS patients, mainly associated with a life-threatening chronic diarrhea and systemic disease. However, to date the global epidemiology of human microsporidiosis is poorly understood, and recent data suggest that the incidence of these pathogens is much higher than previously reported and may represent a neglected etiological agent of more common diseases indeed in immunocompetent individuals. To contribute to the knowledge of microsporidia molecular epidemiology in HIV-positive patients in Nigeria, the authors tested stool samples proceeding from patients with and without diarrhea. METHODOLOGY/PRINCIPAL FINDINGS: Stool samples from 193 HIV-positive patients with and without diarrhea (67 and 126 respectively) from Lagos (Nigeria) were investigated for the presence of microsporidia and Cryptosporidium using Weber's Chromotrope-based stain, Kinyoun stain, IFAT and PCR. The Weber stain showed 45 fecal samples (23.3%) with characteristic microsporidia spores, and a significant association of microsporidia with diarrhea was observed (O.R. = 18.2; CI: 95%). A similar result was obtained using Kinyoun stain, showing 44 (31,8%) positive samples with structures morphologically compatible with Cryptosporidium sp, 14 (31.8%) of them with infection mixed with microsporidia. The characterization of microsporidia species by IFAT and PCR allowed identification of Enterocytozoon bieneusi, Encephalitozoon intestinalis and E. cuniculi in 5, 2 and 1 samples respectively. The partial sequencing of the ITS region of the rRNA genes showed that the three isolates of E.bieneusi studied are included in Group I, one of which bears the genotype B. CONCLUSIONS/SIGNIFICANCE: To our knowledge, this is the first report of microsporidia characterization in fecal samples from HIV-positive patients from Lagos, Nigeria. These results focus attention on the need to include microsporidial diagnosis in the management of HIV/AIDS infection in Nigeria, at the very least when other more common pathogens have not been detected
Prevalence and management of anemia in pre-dialysis Malaysian patients: A hospital-based study
Exploring the effectiveness of crisis counseling and psychoeducation in relation to improving mental well-being, quality of life and treatment compliance of breast cancer patients in Qatar
Reem Jawad Al-Sulaiman,1 Abdulbari Bener,2,3 Lisa Doodson,4 Salha Bujassoum Al Bader,1 Suhaila Ghuloum,5 Alain Lemaux,1 Hekmat Bugrein,1 Reena Alassam,1 Aisha Karim1 1Department of Medical Oncology, National Center of Cancer Care and Research, Doha, Qatar; 2Istanbul Medipol University, International School of Medicine, Istanbul, Turkey; 3Department of Biostatistics and Medical Informatics, Cerrahpasa Faculty of Medicine, Istanbul University, Istanbul, Turkey; 4Department of Psychotherapy and Counseling Studies, Regent’s University London, London, UK; 5Department of Psychiatry, Hamad Medical Corporation, Doha, Qatar Background: An insufficient number of studies have been carried out in the Middle East to evaluate the role of structured psychotherapeutic interventions in enhancing breast cancer patients’ psychological well-being, quality of life and treatment compliance. This study has been designed to address this limitation by exploring the benefit of two structured psychotherapeutic interventions, crisis counseling and psychoeducation, in enhancing breast cancer patients’ psychological well-being, quality of life and treatment compliance in Qatar. Methods: A total of 201 women with early-stage breast cancer from the state of Qatar were recruited and randomized into either the control group or one of the treatment groups (crisis counseling or psychoeducation). Each of the two treatment interventions consisted of a total of six 60- to 90-minute sessions, which were provided over a period of 12 weeks. The short- and long-term benefits of the crisis counseling and psychoeducation interventions were evaluated in terms of improving patients’ psychological well-being, quality of life and treatment compliance by asking all the patients to complete the Depression, Anxiety and Stress Scale, 21 item version (DASS-21) and European Organization for Research and Treatment of Cancer Quality of Life scale (QLQ-C30) instruments at different points in time and by monitoring their compliance to chemotherapy and radiotherapy treatment. Results: This study revealed that both of the study interventions, crisis counseling and psychoeducation, were effective in improving women’s psychological well-being and quality of life over time in comparison to the control group, but had no significant impact on patients’ compliance with treatment. In addition, the study showed that psychoeducation conferred a greater advantage than did the crisis counseling model, especially in improving women’s psychological well-being over time. Conclusion: This study is considered the first of its kind in Qatar to provide evidence on the benefit of crisis counseling and psychoeducation interventions in improving the psychological well-being and quality of life of women with early-stage breast cancer in Qatar. In addition, this study has provided innovative research that can be used as evidence to propose changes to the psychotherapy services for breast cancer patients in Qatar. This research study aims to provide a first step toward further research in the future, which will hopefully lead to a better health care system for cancer patients in Qatar. Keywords: breast cancer, DASS-21, QLQ-C30, crisis counseling, psychoeducation, NCCCR, Qatar, psycho-oncology, psychotherapy, cancer, psychological wellbein