Children With Short Stature Display Reduced ACE2 Expression in Peripheral Blood Mononuclear Cells.

Background: The cause of short stature remains often unknown. The renin-angiotensin system contributes to growth regulation. Several groups reported that angiotensin-converting enzyme 2 (ACE2)-knockout mice weighed less than controls. Our case-control study aimed to investigate if children with short stature had reduced ACE2 expression as compared to controls, and its significance. Materials and Methods: children aged between 2 and 14 years were consecutively recruited in a University Hospital pediatric tertiary care center. Cases were children with short stature defined as height SD ≤ -2 diagnosed with growth hormone deficiency (GHD) or idiopathic short stature (ISS), before any treatment. Exclusion criteria were: acute diseases, kidney disease, endocrine or autoimmune disorders, precocious puberty, genetic syndromes, SGA history. ACE and ACE2 expression were measured in peripheral blood mononuclear cells, angiotensins were measured by ELISA. Results: Children with short stature displayed significantly lower ACE2 expression, being 0.40 fold induction (0.01-2.27) as compared to controls, and higher ACE/ACE2, with no differences between GHD and ISS. ACE2 expression was significantly and inversely associated with the risk of short stature, OR 0.26 (0.07-0.82), and it had a moderate accuracy to predict it, with an AUC of 0.73 (0.61-0.84). The cutoff of 0.45 fold induction of ACE2 expression was the value best predicting short stature, identifying correctly 70% of the children. Conclusions: Our study confirms the association between the reduction of ACE2 expression and growth retardation. Further studies are needed to determine its diagnostic implications.

Safety and Feasibility of Home Transfusions in Pediatric Palliative Care: A Preliminary Report.

BACKGROUND: While hematological symptoms are considered difficult to manage in a Pediatric Palliative Care setting, home may still represent a safe and convenient place for transfusions in patients with advanced malignancy or chronic conditions. This research focuses on the safety and feasibility of a home transfusion program. METHODS: This is a case series of patients between 0 and 18 years diagnosed with advanced malignancy or incurable chronic conditions and eligible to Pediatric Palliative Care who received home platelet or packed red cell transfusions. For all patients, we recorded adverse events such as acute hemolytic reactions, allergic reactions, or any emergency condition requiring hospital admission, equipment failure, blood product transport or storage errors, errors in patient identification, and personnel safety issues. We explored parental satisfaction with a Likert-type questionnaire and short open questions. RESULTS: We reviewed 101 transfusion procedures for six patients in Pediatric Palliative Care performed by the Regional Pediatric Palliative Care network between 2014 and 2020. We did not report any adverse effects. Families reported satisfaction and a sense of safety and positively evaluated the opportunity of having transfusion at home to minimize the disruption in everyday life. The cost analysis resulted in a consistent saving for the Regional Health System. CONCLUSION: This study supports the safety and feasibility of home transfusion in Pediatric Palliative Care.