Water desalination in Egypt; literature review and assessment

The increasing demand for water in urban and industrial areas in arid and semiarid coastal zones has led to the search for alternative nonconventional water resources.. Desalination plants are the most feasible solution to the huge water demand in arid regions, especially in Egypt, with its limited water resources of the Nile River and expected drought due to climate change and upstream dam construction. Many desalination technologies, such as thermal and membrane technologies, are used. Thermal desalination includes multistage flash desalination, multi-effect desalination, and desalination by vapor compression. Membrane desalination involves RO, forward osmosis, and electro dialysis. (RO) desalination plants are the most significant technique for desalinated water in Egypt. However, the treatment of brine wastewater is still a challenging problem. Hypersaline water effluent, as a byproduct of seawater desalination, has a negative impact on the marine ecosystem if it is discharged inadequately. In the past decade, Egypt has launched many large-scale projects along Red Sea and Mediterranean coasts to cope the recent economic growth.In this research a review of taxonomy of many related publications, and comparison has been made between the different seawater desalination techniques to determine the advantages and disadvantages of each of them, as well as to know the best technology that can be used in Egypt. The Egyptian state's plan to address the excessive demand for water resources as a result of the continuous population growth was reviewed by making a strategic plan for 30 years. It was divided into five-year plans, some parts of which have been completed, and the rest of the plan is being completed to present significant comparisons and enable the derivation of informative conclusions

The distribution and outcome of vasculitic syndromes among Egyptians: A multi-centre study including 630 patients

Aim of the work.: Studies describing the epidemiology of vasculitis in the Middle East and Africa are limited. The aim of this multi-centre study is to describe the distribution and outcome of vasculitic syndromes among Egyptian vasculitis patients seen by rheumatologists. Patients and Methods: The files of patients diagnosed with vasculitis between January 2002 and December 2016 were reviewed and were classified according to The Chapel Hill Consensus Conference on the Nomenclature of Systemic Vasculitis CHCC 2012 and disease- specific criteria. The vasculitis damage index (VDI) was calculated for all patients at the last visit. Results: Six hundred and thirty patients with ages ranging from of 9 months-74 years, including 264 (41.9%) males and 366 (58.1%) females were studied. Vasculitis associated with hepatitis C virus (HCV) infection was detected in 151 (24%), Behçet’s disease in 148 (23.5%), Immunoglobulin A vasculitis in 101 (16%), vasculitis associated with systemic lupus erythematosus in 93 (14.8%), Takayasu’s arteritis in 33 (5.2%), Kawasaki’s disease in 22 (3.5%) patients, respectively. Other vasculitic syndromes were uncommon and each accounted for less than 2% of the studied cases. The VDI ranged from 0 to 13. Only 109/630 (17.3%) patients had no vasculitis-related damage (VDI = 0). Mortality was recorded in 36 (5.7%) patients; out of these, 27 deaths were vasculitis-related. Conclusion: HCV-associated vasculitis and Behçet’s disease were the most frequently diagnosed vasculitic syndromes. Keywords: Vasculitis damage index, Vasculitis, Behçet’s disease, HCV-associated vasculitis, Egyp

Endothelial Adenosine Monophosphate-Activated Protein Kinase-Alpha1 Deficiency Potentiates Hyperoxia-Induced Experimental Bronchopulmonary Dysplasia and Pulmonary Hypertension

Bronchopulmonary dysplasia and pulmonary hypertension, or BPD-PH, are serious chronic lung disorders of prematurity, without curative therapies. Hyperoxia, a known causative factor of BPD-PH, activates adenosine monophosphate-activated protein kinase (AMPK) α1 in neonatal murine lungs; however, whether this phenomenon potentiates or mitigates lung injury is unclear. Thus, we hypothesized that (1) endothelial AMPKα1 is necessary to protect neonatal mice against hyperoxia-induced BPD-PH, and (2) AMPKα1 knockdown decreases angiogenesis in hyperoxia-exposed neonatal human pulmonary microvascular endothelial cells (HPMECs). We performed lung morphometric and echocardiographic studies on postnatal day (P) 28 on endothelial AMPKα1-sufficient and -deficient mice exposed to 21% O2 (normoxia) or 70% O2 (hyperoxia) from P1–P14. We also performed tubule formation assays on control- or AMPKα1-siRNA transfected HPMECs, exposed to 21% O2 or 70% O2 for 48 h. Hyperoxia-mediated alveolar and pulmonary vascular simplification, pulmonary vascular remodeling, and PH were significantly amplified in endothelial AMPKα1-deficient mice. AMPKα1 siRNA knocked down AMPKα1 expression in HPMECs, and decreased their ability to form tubules in normoxia and hyperoxia. Furthermore, AMPKα1 knockdown decreased proliferating cell nuclear antigen expression in hyperoxic conditions. Our results indicate that AMPKα1 is required to reduce hyperoxia-induced BPD-PH burden in neonatal mice, and promotes angiogenesis in HPMECs to limit lung injury