CORRELATIONS OF CARBOHYDRATE METABOLISM INDEXES, PROVISION OF BIOELEMENTS, B1, B2 VITAMINS IN CHILDREN AND ADOLESCENTS IN THE NORTH

Human Ecology ◽  
2016 ◽  
pp. 15-20
Author(s):  
O. S. Vlasova ◽  
F. A. Bichkaeva ◽  
N. I. Volkova ◽  
T. V. Tretyakova
2019 ◽  
Vol 98 (1) ◽  
pp. 108-115
Author(s):  
E.V. Pavlovskaya ◽  
◽  
T.V. Strokova ◽  
A.G. Surkov ◽  
A.V. Starodubova ◽  
...  

Spermatozoa of the giant octopus, as obtained from ruptured metre-long spermatophores, are only feebly motile. The total length of a spermatozoon is 1/2 mm, most of it due to the tail. The sperm-head, slim and oblong, is composed of a highly condensed nucleus and a cork-screw shaped acrosome. A striking feature, which distinguishes octopus spermatozoa from those of mammals, is the presence of a large amount of glycogen, concentrated mainly around the sperm-head. This, together with the occurrence of high phosphorylase and phosphoghlcomutase activity, indicates that glycogenolysis represents a pathway of carbohydrate metabolism in octopus spermatozoa. Both glucose-6-phosphate isomerase and glucose-6-phosphate dehydrogenase were demonstrated in extracts of prepared sperm- homogenates, which suggests that octopus spermatozoa may be capable of metabolizing glucose-6-phosphate along the oxidative as well as the glycolytic pathway.


2020 ◽  
Vol 25 (5) ◽  
pp. 317-321 ◽  
Author(s):  
Sarah A Richmond ◽  
Ian Pike ◽  
Jonathon L Maguire ◽  
Alison Macpherson

Abstract Objectives Electronic cigarettes and fluid (e-cigarettes, e-fluid) are hazardous materials that when inhaled or ingested may pose significant health risks to children and adolescents. The objective of this work was to explore the spectrum of injury related to e-cigarette exposure among Canadian children and adolescents. Methods A one-time survey was sent to all paediatricians in Canada. Information was collected on children and adolescents who presented with e-cigarette exposure (inhalation and ingestion cases) in the previous 12 months. Questions included the number of injuries and symptoms, in addition to age, sex, treatment setting, intentional e-cigarette use, and how the products were accessed. Results A total of 520 surveys were completed and returned, identifying 35 cases. Symptoms related to inhalation were present in 30 cases and in 5 ingestion cases (5 unintentional, 0 intentional). For inhalation cases, most were male, ages 15 to 19 years, who sought treatment for nausea/vomiting, cough, throat irritation, or acute nicotine toxicity in an outpatient clinic/office. Most inhalation cases reported e-cigarette use 2 to 3 days/week, and e-cigarettes purchases from a mall kiosk/store. For ingestion cases, most were male, ages 1 to 4 years presenting to an emergency department with nausea/vomiting, cough, or respiratory irritation. Younger cases accessed e-fluid at home, older cases purchased in a mall kiosk/store. E-fluid flavours reported consumed were fruit, candy, and tobacco. Conclusions E-cigarettes, recently introduced into the North American market are hazardous to children and adolescents. Given the low response rate to the survey, further investigation into the true burden of injury, as well as the risks that e-cigarettes pose, together with ways to reduce exposure, is needed.


Sign in / Sign up

Export Citation Format

Share Document