Towards phenotyping adaptive traits in camels: A study of the influence of hypotonic saline solutions on blood cell area.

Single-humped camels are livestock of physical, physiological, and biochemical adaptations to hot desert environments and to water scarcity. The tolerance of camels to water deprivation and their exceptional capacity for rapid rehydration requires blood cells with membranes of specialized organization and chemical composition. The objectives of this study are to examine the changes in the area (a proxy for volume) of camel blood cells in solutions with decreasing concentrations of NaCl and consequently identify the conditions under which blood cells can be phenotyped in a large population. Whole-blood samples from three healthy adult female camels were treated with four different concentrations of NaCl and examined at six incubation-periods. Observationally, red blood cells in all treatments remained intact and maintained their elliptical shape while white blood cells experienced some damage, lysing at concentrations below 0.90%. Average basal (in 0.90% NaCl) RBC area was ~15 µm² and swelled in the various treatments, in some cases reaching twice its original size. Excluding the damaged cells, the average area of combined WBCs, ~32.7 µm², expanded approximately three times its original size. We find that camel WBCs, like their RBCs, are adapted to hypotonic environments, and are capable of expanding while maintaining their structural integrity.

Prevalence of Cardiovascular and Renal Co-morbidities in Patients with Type 2 Diabetes in the Gulf, a Cross-sectional Observational Study.

INTRODUCTION: Understanding comorbid conditions with type 2 diabetes mellitus (T2DM) is critical for clinical decision-making regarding the choice of pharmacotherapy. This study aimed at describing the prevalence and co-prevalence of comorbidities, including chronic kidney disease (CKD) and cardiovascular disease (CVD) (coronary artery disease (CAD), cerebrovascular disease, peripheral arterial disease (PAD) and congestive heart failure (CHF)) among patients with T2DM. METHODS: A cross-sectional multi-center observational study on 300 patients with T2DM. Data were collected from patients' records during the enrollment visit. RESULTS: Overall, 38%, 10% and 2% of the patients had one, two and three comorbidities, respectively, with the number of comorbidities significantly increasing with age. The most prevalent comorbidities were CVD (17.3%), CAD (15%) and CKD (44.3%), mostly stages 2 and 3. However, the prevalence of  CHF (0.7%),  PAD (2.3%) and cerebrovascular diseases (1.3%) was low. The highest percentage of anti-hyperglycemic agents used was metformin (81%), dipeptidyl peptidase-4 inhibitors (46%), sodium-glucose co-transporter 2 inhibitors (37%), insulin (36%) and sulfonylurea (34%). The choice of the anti-hyperglycemic class did not change across age groups and gender. CONCLUSION: Half of the patients had T2DM only. The most prevalent comorbidity found was CKD, mainly stage 2. The comorbidity burden tended to increase significantly in older age groups.