Biomaterial Database

[Morphological study of adipose tissue during the first year of life (author's transl)]. 1981

N M Díaz, and M Moya, and A Martín, and E Doménech

Forty-one sample of adipose tissue were obtained by needle biopsy from thirty-two newborn at term and nine infants between two and 12 months. Number of fat cells of the newborn with birth-weights appropriate, large and low for their gestational age were similar (6-7 X 10(9). The babies whose birth weights were large for their gestational age showed a significant increase (p less than 0.001) in size of the fat cells (m + SD = 71.3 +/- 7.9), compared with those of low birth weight and control samples: 41.2 +/- 3.6 and 55.6 +/- 3.9 micrometer respectively. Percentage of body fat increases from a mean figure of 13.8% at birth to 24.9% at three months, in babies of normal weight. Growth of fat deposits is due to an increase in the size of adipose cells, reaching a mean value of 85.2 micrometer, without differences in number of fat cells present at birth. In the newborn as in infants diameter of fat cells has an important and positive correlation with the body weight and fat quantity. The same type of relationship exists between infants age and diameter of fat cells (r = 0.93). Four obese infants studied showed an increase in size of fat cells (m + SD = 112.7 +/- 10.9 micrometer) without modification in number of cells.

UI	MeSH Term	Description	Entries
D007223	Infant	A child between 1 and 23 months of age.	Infants
D007230	Infant, Low Birth Weight	An infant having a birth weight of 2500 gm. (5.5 lb.) or less but INFANT, VERY LOW BIRTH WEIGHT is available for infants having a birth weight of 1500 grams (3.3 lb.) or less.	Low Birth Weight,Low-Birth-Weight Infant,Birth Weight, Low,Birth Weights, Low,Infant, Low-Birth-Weight,Infants, Low-Birth-Weight,Low Birth Weight Infant,Low Birth Weights,Low-Birth-Weight Infants
D007231	Infant, Newborn	An infant during the first 28 days after birth.	Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D007236	Infant, Small for Gestational Age	An infant having a birth weight lower than expected for its gestational age.
D009765	Obesity	A status with BODY WEIGHT that is grossly above the recommended standards, usually due to accumulation of excess FATS in the body. The standards may vary with age, sex, genetic or cultural background. In the BODY MASS INDEX, a BMI greater than 30.0 kg/m2 is considered obese, and a BMI greater than 40.0 kg/m2 is considered morbidly obese (MORBID OBESITY).
D012044	Regression Analysis	Procedures for finding the mathematical function which best describes the relationship between a dependent variable and one or more independent variables. In linear regression (see LINEAR MODELS) the relationship is constrained to be a straight line and LEAST-SQUARES ANALYSIS is used to determine the best fit. In logistic regression (see LOGISTIC MODELS) the dependent variable is qualitative rather than continuously variable and LIKELIHOOD FUNCTIONS are used to find the best relationship. In multiple regression, the dependent variable is considered to depend on more than a single independent variable.	Regression Diagnostics,Statistical Regression,Analysis, Regression,Analyses, Regression,Diagnostics, Regression,Regression Analyses,Regression, Statistical,Regressions, Statistical,Statistical Regressions
D001724	Birth Weight	The mass or quantity of heaviness of an individual at BIRTH. It is expressed by units of pounds or kilograms.	Birthweight,Birth Weights,Birthweights,Weight, Birth,Weights, Birth
D002452	Cell Count	The number of CELLS of a specific kind, usually measured per unit volume or area of sample.	Cell Density,Cell Number,Cell Counts,Cell Densities,Cell Numbers,Count, Cell,Counts, Cell,Densities, Cell,Density, Cell,Number, Cell,Numbers, Cell
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000273	Adipose Tissue	Specialized connective tissue composed of fat cells (ADIPOCYTES). It is the site of stored FATS, usually in the form of TRIGLYCERIDES. In mammals, there are two types of adipose tissue, the WHITE FAT and the BROWN FAT. Their relative distributions vary in different species with most adipose tissue being white.	Fatty Tissue,Body Fat,Fat Pad,Fat Pads,Pad, Fat,Pads, Fat,Tissue, Adipose,Tissue, Fatty