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PubMed1989

Retinol, beta-carotene and alpha-tocopherol status in a French population of healthy children.

The serum of 392 French healthy children aged 1-16 years was analysed for vitamin A, vitamin E, beta-carotene and cholesterol contents. The study group consisted in 185 females and 207 males, living in the area of Tours, France. The mean serum values are 42.05 +/- 12.0 micrograms/dl for vitamin A, 572 +/- 381 micrograms/l for beta-carotene and 9.5 +/- 2.5 mg/l for vitamin E. According to sex distribution, mean values of studied micronutrients levels are higher in boys than in girls, but not significantly. Vitamin A and vitamin E serum levels increased with age. Vitamin E peripheral level is strongly correlated with total cholesterol serum value. The results are compared to those of underdeveloped countries children groups studies. At least, decreased vitamins levels are observed among five per cent of children and are examined as being at risk to develop a deficiency.

Adolescent↗
PubMed1989

Nutritional status in Linxian, China: effects of season and supplementation.

The ability of a supplement to counteract seasonal alterations in nutritional status for certain vitamins was studied in Linxian, an area in northern China with high rates of esophageal cancer. 150 subjects took one daily pill from April to August (16 weeks), whereas 50 subjects did not take any supplement. Deficiencies of ascorbic acid, riboflavin, folic acid, retinol and tocopherol were prevalent at the outset of the study. The changes in diet occurring between the end of the winter (April) and the start of the autumn vegetable harvest (August) were reflected in greatly improved ascorbic acid status and slightly improved riboflavin status. Plasma retinol, tocopherol, alpha-carotene and beta-carotene were little affected by season, whereas erythrocyte folate levels declined. The ascorbic acid, riboflavin, folate, retinol and tocopherol status of the supplemented subjects was significantly improved. After 16 weeks of supplementation, erythrocyte folate levels of subjects with esophageal dysplasia were improved but remained significantly lower than those of normal supplemented subjects, targeting folic acid as a nutrient of particular interest in this precancerous condition.

Anthropometry↗
PubMed1989

Vitamin deficiencies and public interventions in the Federal Republic of Germany.

Vitamin supply of adults in the Federal Republic of Germany is - on the average of the population - satisfactory; i.e. the great majority of test persons who underwent biochemical tests (in each case more than 70%) has been found to show at least satisfactory values of vitamin supply with the usual diet. Measuring values of folic acid, thiamin and vitamin B6 were most frequent in the critical range. Uncertain supply with riboflavin, vitamin A and vitamin C has been found in some age and professional groups only; supply with vitamin B12, vitamin E and niacin was not certain in some exceptional cases only. Groups of above-average risk of uncertain vitamin supply so far are young women (18-24 years) and senior men (above 65 years). The pattern of supply gaps is clearly different: in young women, uncertain supply includes folic acid, riboflavin, vitamin B6 and (as the only group) vitamin E; in older men, it includes vitamin C, vitamin A and riboflavin). The educational level is another important factor of influence which has to be taken into account. This is pleasant finding because it gives reason to assume that improved capability to inform oneself leads, at least in part of the population, to a more balanced diet. In cases of lower educational levels, on the other hand, the interest in questions of health and maintenance of health is much lower. This also becomes manifest in a clearly reduced readiness to participate in nutritional inquiries.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMedDate not supplied

[The effect of preventive vitamin supplementation on vitamin status and work productivity of conveyer belt workers in light industry].

The authors have studied the ways of correcting the vitamin status and influence of vitaminization on working capacity in workwomen in light industry. Prophylactic polyvitaminization (1 dragee of "Undevitum"/day, during 2 months) proved to produce positive effect on the vitamin status parameters (vitamin content in the blood and urine, clinical microsymptoms of vitamin deficiency), and on the dynamics of the physiological parameters of working capacity of workwomen at modern conveyer shoe making industry. It is recommended that persons suffering from chronic diseases influencing vitamin metabolism, first of all those over 45 years, should receive increased doses of prophylactic polyvitamins, thiamine and ascorbic acid, in particular.

Adult↗
PubMed1989

Blood vitamin and trace metal levels in epidermolysis bullosa.

Plasma or erythrocyte levels of ten nutrients (vitamins A, C, B12 and B6; folate; thiamine; riboflavin; zinc; copper; iron) were assayed in 73 patients with various forms of inherited epidermolysis bullosa (EB). Whereas the mean level for each nutrient was within its normal range, deficient levels were noted in individual EB subsets for selected nutrients. Notable abnormalities included low levels of plasma iron and zinc (in junctional EB and recessive dystrophic EB), vitamin C (primarily in EB simplex), vitamin A (in junctional and recessive dystrophic EB), vitamin B12 (primarily in EB simplex), and vitamin B6 (especially in recessive dystrophic EB). With the exception of low plasma iron and zinc levels in junctional and recessive dystrophic EB, however, only a minority of patients in any of the EB subsets had low levels of most of the other nutrients, and an apparent correlation with malabsorption was possible with only selected nutrients.

Adolescent↗
PubMed1989

[Is vitamin intake by the elderly in The Netherlands precarious?].

The elderly are vulnerable to nutritional risks. The vitamin intake (assessed through dietary history) and vitamin status of 539 independently living persons aged 65-79 years and 44 lacto-(ovo)-vegetarian persons aged 65-97 years were evaluated. All respondents were apparently healthy. Compared with the Dutch recommended dietary allowances the intake of vitamins was assessed as adequate except for vitamin B6. The marginal intake of vitamin B6 is reflected in the vitamin B6 status. The prevalence of low 25-hydroxyvitamin D concentrations in plasma is high among elderly people as compared with younger adults (blood donors); the concentration is negatively correlated with age. The vegetarian elderly appeared to be at risk regarding the vitamin B12 status. In conclusion, the average intake of vitamins is assessed as adequate, whereas the intakes of vitamin B6 and vitamin D of Dutch apparently healthy elderly need more attention.

Aged↗
PubMedDate not supplied

[The vitamin allowance and vitamin requirements of the operators of a chemical plant in the city of Rustavi].

Excretion of thiamine, riboflavin, N1-methyl nicotinamide and ascorbic acid with urine, TDP-effect, ascorbic acid and vitamin A content in the blood have shown higher vitamin requirements in the operators, as compared to subjects of the control group, this was caused by unfavourable effects of the chemical factors of the production environment. The levels of the biochemical parameters characterizing normal providing of the operators with vitamins could be achieved by additional vitamins administered to the workers (2 dragees of "Hexavitum").

Adult↗
PubMedDate not supplied

[Body vitamin allowance of vegetable growers working on sheltered soil].

The providing of hothouse workers with vitamins B1, B2, B6, PP, C and E was comprehensively evaluated basing on the study of their actual nutrition and biochemical parameters of their vitamin status--daily excretion of vitamins and their metabolites with urine, vitamin concentration in the blood serum and activity of erythrocytic vitamin-dependent enzymes with calculation of their activation coefficients. Multiple hypovitaminosis detected in the vegetable growers working in hothouses who received normal amounts of these essential nutrients with food, as well as the relationship noted between the vitamin-providing level and the length of working in the hothouse, evidence a possible influence of the occupational factors--the character of work attended by the action of toxic chemical compounds under conditions of the hothouse microclimate. Further investigations should be conducted to determine the vitamin requirements of hothouse workers.

Adult↗