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Biomedical subjects

V Mann

Publications and source records attributed to V Mann.

45 records · Page 3Linked to original sources
PubMed1982

[Iron-deficiency and replacement in infancy].

The frequency of iron-deficiency anaemia was investigated in 376 children with the aid of serum ferritin determinations. The children, resident in Budapest or Miskolc were 6 months to 3 years old. Marked iron-deficiency (serum ferritin less than 10 micrograms/l) could be demonstrated in 33.8% of the investigated population. The frequency of iron-deficiency was related to the socio-economic and cultural status of the mother, a factor which is thought to influence the feeding habits. In areas where iron-deficiency is frequently detected regular iron-prophylaxis is recommended.

Anemia, Hypochromic↗
PubMed1981

The use of 17-epimethyltestosterone radioimmunoassay in following excretion of methandienone metabolites in urine.

A radioimmunoassay determination method was developed for 17-epimethyltestosterone (17 alpha-hydroxy-17-methyl-4-androstein-3-one). Excretion of metabolites during and after methandienone (17 beta-hydroxy-17-methyl-1,4-androstadien-3-one) administration was followed in human urine samples by RIA tests for methandienone and 17-epimethyltestosterone. While alternating peaks were found in both measured excretion curves, their addition results in a normal curve showing a plateau between the 3rd and 6th day of the drug administration. Furthermore, due to the presence of higher amounts of epi-configurated metabolites, the new test has a higher effectiveness in the detection of the metabolites.

Animals↗
PubMedDate not supplied

Japanese adults can learn to produce English /r/ and /l/ accurately.

As is well known, Japanese adults who have just begun to learn English often err in producing /r/ and /l/ because their native language does not possess such liquid consonants. The aim of this study was to determine if Japanese adults eventually learn to produce /r/ and /l/ accurately in words like read and lead. Liquids spoken by 12 native Japanese speakers who had lived in the United States for an average of two years were often misidentified by native English-speaking listeners. Their productions of /r/ and /l/ also received much lower (and thus foreign-accented) ratings than did the native English speakers' liquids. On the other hand, liquids produced by native Japanese speakers who had lived in the United States for an average 21 years were identified correctly in forced-choice tests. This held true for liquids in words that had been read from a list as well as for words that had been spoken spontaneously. The ratings of liquids produced by 10 of the 12 experienced Japanese speakers fell within the range of ratings obtained for the 12 native English speakers. These findings challenge the widely accepted view that segmental production errors in a second language arise from the inevitable loss of ability to learn phonetic segments not found in the native language.

Adult↗
PubMedDate not supplied

A systematic review of the effectiveness of environmental awareness interventions.

PURPOSE: To evaluate and summarize evidence on the effectiveness of interventions available to public health staff regarding the protection of the public from environmental risks. METHOD: This systematic review involved a comprehensive literature search, screening for relevance, quality assessment of relevant studies, data extraction and synthesis. RESULTS: Fourteen of 65 relevant studies were of 'moderate' or 'strong' quality. Intervention types in these 14 studies included: mass campaign, counselling, school curriculum, educational sessions, and distribution of printed materials. Short-term improvements in awareness or knowledge were observed in 13 of the 14 studies. Eight of 13 studies that examined behavioural outcomes observed short-term improvements in self-reported behavioural outcomes. CONCLUSIONS: Positive short-term changes in health-protective awareness, knowledge and self-reported behaviour appear to be associated with relatively intensive interventions that use multiple methods and settings, and/or are delivered over multiple sessions.

Awareness↗
PubMedDate not supplied

The influence of mechanical stimulation on osteocyte apoptosis and bone viability in human trabecular bone.

It has been shown previously using in vivo and ex vivo animal models, that cyclical mechanical stimulation is capable of maintaining osteocyte viability through the control of apoptotic cell death. Here we have studied the effect of mechanical stimulation on osteocyte viability in human trabecular bone maintained in a 3-D bioreactor system. Bone samples, maintained in the bioreactor system for periods of 3, 7 and 27 days, were subjected to either cyclical mechanical stimulation which engendered a maximum of 3,000 microstrain in a waveform corresponding to physiological jumping exercise for 5 minutes daily or control unloading. Unloading resulted in a decrease in osteocyte viability within 3 days that was accompanied by increased levels of cellular apoptosis. Mechanical stimulation significantly reduced apoptosis (p< or =0.032) and improved the maintenance of osteocyte viability in bone from all patient samples. The percentage Alkaline Phosphatase (ALP) labelled bone surface was significantly increased (p< or =0.05) in response to mechanical stimulation in all samples as was the Bone Formation Rate (BFR/BS) (p=0.005) as determined by calcein label incorporation in the 27-day experiment. These data indicate that in this model system, mechanical stimulation is capable of maintaining osteocyte viability in human bone.

Adult↗