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Food and beverages rich in polyphenols have been shown to reduce the risk of non-communicable diseases. The present study estimated polyphenol levels and consumption from food and beverages in Japanese women. Randomly recruited housewives living in the area around Tokyo (n 109; aged 21–56 years; Group 1) recorded all beverages and foods they ingested for 7 d, and the total polyphenol (TP) consumption was estimated based on the TP content of each item measured with a modified Folin–Ciocalteu method. For Group 1, TP was consumed at 841 (sd 403) mg/d (range 113–1759 mg/d), and beverages were a larger source of TP (79 %) than food (21 %). The largest single source of TP was coffee at 47 %, followed by green tea, black tea, chocolate, beer and soya sauce, at 16, 5·7, 3·3, 3·2 and 3·1 %, respectively. In terms of food groups, cereals/noodles, vegetables, fruits, beans and seeds, and seasonings (except for soya sauce) contributed 5·0, 4·0, 1·4, 1·8 and 2·4 %, respectively. Another group of housewives who consumed at least one cup of coffee per d were separately recruited (n 100; Group 2) in the same area. Their consumption of TP was higher at 1187 (sd 371) mg/d (range 440–2435 mg/d) than Group 1 (P < 0·001), and the difference mostly came from the coffee consumption. We conclude that not food but beverages, especially coffee, may be the major contributor to TP consumption in Japanese women.
Previous studies have reported the association between advanced paternal
age at birth and the risk of autistic-spectrum disorder in offspring,
including offspring with intellectual disability.
To test whether an association between advanced paternal age at birth is
found in offspring with high-functioning autistic-spectrum disorder (i.e.
offspring without intellectual disability).
A case–control study was conducted in Japan. The participants consisted
of individuals with full-scale IQ ⩾ 70, with a DSM–IV autistic disorder
or related diagnosis. Unrelated healthy volunteers were recruited as
controls. Parental ages were divided into tertiles (i.e. three age
classes). Odds ratios and 95% confidence intervals were estimated using
logistic regression analyses, with an adjustment for age, gender and
Eighty-four individuals with autistic-spectrum disorder but without
intellectual disability and 208 healthy controls were enrolled. Increased
paternal, but not maternal, age was associated with an elevated risk of
high-functioning autistic-spectrum disorder. A one-level advance in
paternal age class corresponded to a 1.8-fold increase in risk, after
adjustment for covariates.
Advanced paternal age is associated with an increased risk for
high-functioning autistic-spectrum disorder.
Immune dysfunction has been proposed as a mechanism for the pathophysiology
of autistic-spectrum disorders. The selectin family of adhesion molecules
plays a prominent role in immune/inflammatory responses. We determined the
serum levels of three types of soluble-form selectin (sP, sL and sE) in 15
men with high-functioning autism and 22 age-matched healthy controls by
enzyme-linked immunosorbent assay. Levels of sP-selectin and sL-selectin
were significantly lower in patients than in controls. Furthermore,
sP-selectin levels were negatively correlated with impaired social
development during early childhood.
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