1.NAD + and Vascular Dysfunction: From Mechanisms to Therapeutic Opportunities
Mahmoud ABDELLATIF ; Heiko BUGGER ; Guido KROEMER ; Simon SEDEJ
Journal of Lipid and Atherosclerosis 2022;11(2):111-132
Nicotinamide adenine dinucleotide (NAD + ) is an essential and pleiotropic coenzyme involved not only in cellular energy metabolism, but also in cell signaling, epigenetic regulation, and post-translational protein modifications. Vascular disease risk factors are associated with aberrant NAD + metabolism. Conversely, the therapeutic increase of NAD + levels through the administration of NAD + precursors or inhibitors of NAD + -consuming enzymes reduces chronic low-grade inflammation, reactivates autophagy and mitochondrial biogenesis, and enhances oxidative metabolism in vascular cells of humans and rodents with vascular pathologies. As such, NAD + has emerged as a potential target for combatting age-related cardiovascular and cerebrovascular disorders. This review discusses NAD + -regulated mechanisms critical for vascular health and summarizes new advances in NAD + research directly related to vascular aging and disease, including hypertension, atherosclerosis, coronary artery disease, and aortic aneurysms. Finally, we enumerate challenges and opportunities for NAD + repletion therapy while anticipating the future of this exciting research field, which will have a major impact on vascular medicine.
2.Burden of Early Life Obesity and Its Relationship with Protein Intake in Infancy: The Middle East Expert Consensus
Frank JOCHUM ; Mohamed ABDELLATIF ; Ashraf ADEL ; Ahmed ALHAMMADI ; Abdulrahman ALNEMRI ; Eman ALOHALI ; Khaled ALSARRAF ; Khoula AL SAID ; Mahmoud ELZALABANY ; Hasan M. A. ISA ; Sridhar KALYANASUNDARAM ; Naguib Abdel REHEIM ; Omar SAADAH
Pediatric Gastroenterology, Hepatology & Nutrition 2022;25(2):93-108
Adequate nutrition in early life is proposed to shape a child’s future health by launching the growth trajectory in the proper direction, which helps to avoid negative metabolic programming effects. Protein intake during infancy and early childhood is of great importance, as it plays a key role in infant metabolic programming and the future risk of obesity. Breastfeeding provides the best nutrition in early life, with many benefits tailored for the baby, including the appropriate quantity and quality of proteins. Considering the high prevalence of childhood, and subsequent adult, obesity in the region, a virtual Middle East expert consensus meeting was held to discuss an effective approach for managing childhood obesity. Leading pediatric experts from Bahrain, Egypt, Kuwait, Oman, Qatar, Saudi Arabia, and the United Arab Emirates participated in the meeting. The experts discussed, debated, and agreed on certain directions, including the importance of educating parents, endorsing breastfeeding, and ensuring optimum quantity and quality intake of proteins in early life.This expert consensus may serve as the starting point for healthcare professionals in the region who are interested in shaping a healthy future for the generations to come.