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This editorial discusses advances in brain barrier and brain fluid research in 2020. Topics include the cerebral endothelium and the neurovascular unit; the choroid plexus; the meninges; cerebrospinal fluid and the glymphatic system; disease states impacting the brain barriers and brain fluids; drug delivery to the brain. This editorial also highlights the recently completed Fluids Barriers CNS thematic series entitled, 'Advances in in vitro modeling of the blood-brain barrier and neurovascular unit'. Such in vitro modeling is progressing rapidly.
Pompe disease (PD) is an autosomal recessive metabolic disorder caused by pathogenic variants in the acid α-glucosidase gene (GAA) that produces defects in the lysosomal acid α-1,4-glucosidase. We aimed to identify genetic variations and clinical features in Spanish subjects to establish genotype-phenotype correlation.
A total of 2637 samples of patients who showed symptoms or susceptible signs of PD were enrolled in this observational study. Enzymatic activity was detected by fluorometric techniques and the genetic study was carried out using Next-Generation Sequencing.
Fourteen different variants from 17 diagnosed patients were identified, seven males and nine females with LOPD (mean age 36.07, SD 20.57, range 7-64) and a 2-day-old boy with IOPD, four genetic variants had not been described in the literature previously, including a homozygous variant. In all of them α-glucosidase activity was decreased. Muscle weakness, respiratory distress, exercise intolerance, hypotonia, dysphagia and myalgia were commonly observed in patients.
This study report four new genetic variants that contribute to the pathogenic variants spectrum of the GAA gene. We confirm that patients in Spain have a characteristic profile of a European population, with c.-32-13T>G being the most prevalent variant. Furthermore, it was confirmed that the c.236_246delCCACACAGTGC pathogenic variant in homozygosity is associated with early disease and a worse prognosis.
G being the most prevalent variant. Furthermore, it was confirmed that the c.236_246delCCACACAGTGC pathogenic variant in homozygosity is associated with early disease and a worse prognosis.
Enjoyment of physical and mental health is not only recognized as a human right but also as an integral part of development, as reflected in Sustainable Development Goal 3 - to ensure healthy lives and promote well-being for all at all ages. The rapid physical and psychosocial changes that take place during adolescence have a strong influence on the rest of a person's life course, so investments in adolescent health services constitute a unique opportunity to reap inter-generational dividends. Yet the evidence base on adolescents' access to health services, particularly in conflict-affected contexts, remains thin. This article explores adolescents' access to health services in the Gaza Strip, and their experiences and perceptions of those services.
The article draws on mixed methods research in the Gaza Strip conducted in 2016 and 2017 as part of the Gender and Adolescence Global Evidence research programme. Data were collected from 240 male and female adolescents combining in-depth interviews, focus groun on sexual and reproductive health, as well as drug shortages, high treatment costs, and inappropriate interactions with service providers.
The article highlights the importance of designing and implementing conflict-sensitive and age- and gender-appropriate adolescent services and information and promoting preventive services targeted at adolescents.
The article highlights the importance of designing and implementing conflict-sensitive and age- and gender-appropriate adolescent services and information and promoting preventive services targeted at adolescents.
Cardiac erosion after percutaneous atrial septal defect (ASD) closure is a rare complication that requires immediate life-saving emergency surgery. In this report, we present our successful life-saving strategy for cardiac arrest due to cardiac tamponade caused by erosion 6 years after the percutaneous closure of an ASD.
The patient was a 50-year-old man who received treatment using an Amplatzer septal occluder (St. Jude Medical, St. selleck chemicals Paul, MN, USA) treatment for ostium secundum atrial septal defect (size 29.5 × 27.0 mm) at another institution when he was 44 years old.
This case report presents a bailout surgical strategy for patients who are hemodynamically unstable with risks of coagulopathy and multiple organ failure. This case shows that cardiac surgeons need to be aware of percutaneous ASD-closure complications and should consider a bailout surgical strategy for patients at risk of multiple organ failure.
This case report presents a bailout surgical strategy for patients who are hemodynamically unstable with risks of coagulopathy and multiple organ failure. This case shows that cardiac surgeons need to be aware of percutaneous ASD-closure complications and should consider a bailout surgical strategy for patients at risk of multiple organ failure.
Old age, the most important risk factor for Alzheimer's disease (AD), is associated with thermoregulatory deficits. Brown adipose tissue (BAT) is the main thermogenic driver in mammals and its stimulation, through β3 adrenergic receptor (β3AR) agonists or cold acclimation, counteracts metabolic deficits in rodents and humans. Studies in animal models show that AD neuropathology leads to thermoregulatory deficits, and cold-induced tau hyperphosphorylation is prevented by BAT stimulation through cold acclimation. Since metabolic disorders and AD share strong pathogenic links, we hypothesized that BAT stimulation through a β3AR agonist could exert benefits in AD as well.
CL-316,243, a specific β3AR agonist, was administered to the triple transgenic mouse model of AD (3xTg-AD) and non-transgenic controls from 15 to 16 months of age at a dose of 1 mg/kg/day i.p.
Here, we show that β3AR agonist administration decreased body weight and improved peripheral glucose metabolism and BAT thermogenesis in both non-transgenic and 3xTg-AD mice. One-month treatment with a β3AR agonist increased recognition index by 19% in 16-month-old 3xTg-AD mice compared to pre-treatment (14-month-old). Locomotion, anxiety, and tau pathology were not modified. Finally, insoluble Aβ42/Aβ40 ratio was decreased by 27% in the hippocampus of CL-316,243-injected 3xTg-AD mice.
Overall, our results indicate that β3AR stimulation reverses memory deficits and shifts downward the insoluble Aβ42/Aβ40 ratio in 16-month-old 3xTg-AD mice. As β3AR agonists are being clinically developed for metabolic disorders, repurposing them in AD could be a valuable therapeutic strategy.
Overall, our results indicate that β3AR stimulation reverses memory deficits and shifts downward the insoluble Aβ42/Aβ40 ratio in 16-month-old 3xTg-AD mice. As β3AR agonists are being clinically developed for metabolic disorders, repurposing them in AD could be a valuable therapeutic strategy.
Homepage: https://www.selleckchem.com/products/ab680.html
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