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Biomedical subjects

H Zimmermann

Publications and source records attributed to H Zimmermann.

At least 289 records · Page 16Linked to original sources
PubMed1978

Blood amine acid levels in patients with insulin excess (functioning insulinoma) and insulin deficiency (diabetic ketosis).

Blood amino acid concentrations were determined in the postabsorptive state in nine patients with insulin excess (functioning insulinomas), nine juvenile-type diabetics with insulin deficiency (diabetic ketosis due to insulin withdrawal), six juvenile diabetics in moderate metabolic control, and five healthy control subjects. Blood branched-chain amino acid (BCAA) levels were elevated in diabetic ketosis and decreased in patients with insulinomas. Blood concentrations of BCAA were significantly correlated to blood glucose levels, and in diabetics they were also correlated to blood ketone bodies, serum free fatty acids, and glycerol levels. These data indicate an inverse relationship between circulating effective insulin levels and blood BCAA concentrations. It is suggested that blood levels of BCAA might represent an indicator of insulin-dependent alterations of protein metabolism.

Adenoma, Islet Cell↗
PubMed1978

Non-glucoregulatory hormones (T4, T3, rT3, TSH, testosterone) during physical exercise in juvenile type diabetics.

Non-glucoregulatory hormones (T4, T3, rT3, TSH and testosterone) were studied by radioimmunoassay in juvenile-type diabetics in moderate control and in ketosis due to insulin withdrawal and in age matched "normals" during a mild prolonged exercise test. The basal serum hormone levels revealed the following findings: Serum testosterone was markedly lower in diabetics than in normals ( 177 +/- 24 resp. 618 +/- 52 ng/dl). This is in contrast to other studies, but it may reflect decreased testicular function due to an early, clinically not apparent atherosclerotic disease. Serum T3 was significantly lower in diabetics than in normals (110 +/- 16 resp. 145 +/- 19), suggesting an early "low T3-syndrome" in juvenile-type diabetics. However, increased serum rT3 levels were not observed, and serum T4 and TSH were normal. Mild prolonged exercise had no major effects on these nonglucoregulatory hormones. In juvenile-type diabetics the degree of metabolic control had no influence on the response of the mentioned hormones. However, an increased cortisol/testosterone ratio in ketotic diabetics in the basal state with a further increase during exercise was demonstrated, indicating an aggravation of the catabolic state in these patients during exercise.

Adult↗
PubMed1977

Axonal transport in the electromotor nerves of Torpedo marmorata.

Studies on the axonal transport of cholinergic cell components were made on the electromotor nerves of Torpedo marmorata. Choline acetyltransferase was rapidly accumulated at ligatures on Torpedo nerves, both in vivo and in segments incubated in vitro. In vivo accumulation was maximal approximately one month after nerve interruption. Orthograde transport (both in vitro and in vivo) is calculated to have a velocity of 50--140 mm/day, if, as double-ligature experiments suggest, only about 15% of the axoplasmic enzyme is mobile. A small retrograde accumulation of the transferase was demonstrated. Lactate dehydrogenase did not accumulate but a slight reduction of its activity at ligatures was observed. In contrast to mammalian cholinergic nerves, no accumulation of esterase was observed. ACh accumulation proximal to a cut was apparent and may result in part from local synthesis in the presence of elevated levels of its synthesizing enzyme. Measurements have been made on the activity of choline acetyltransferase in the brain and all parts of the "electric system". In view of these results it is difficult to see how the measured rate of axonal translocation is sufficient to supply the levels of the enzyme found within the electric organ. Within the electromotor cells, choline acetyltransferase is highly concentrated in the axon terminals.

Acetylcholine↗
PubMed1977

[Incidence of obesity in hospitalised patients 1933-1972 (author's transl)].

Analysis of 31 686 patient records for obesity among hospitalised patients in the Second Medical Clinic of Düsseldorf University between 1952 and 1972 demonstrated a steep rise to a plateau of 24 +/- 2% in 1956-1972. Adding a corresponding analysis from the Bonn Medical University Clinic some 66 000 hospitalised patients could be included for a period of 40 years. Socio-economic conditions in the war and post-war period produced a marked fall in obesity to a minimum of 2% in 1946. The mean incidence before 1935 was 10%, by 1958 it had increased two-and-a-half fold. It is thought that this had been due not to a corresponding higher calorie intake by the population but rather a general reduction in physical activity. The increase in obesity among the population, reflected in these hospital statistics, is likely to lead to a parallel increase in cardiovascular risk factors and with it the ever-rising curve of death from cardiovascular disease in the Federal Republic of Germany.

Cardiovascular Diseases↗
PubMed1977

Inclusion body myositis. A "slow-virus" infection of skeletal musculature?

We report the case of a 56-years old patient with clinical symptoms of an unresolved neuromuscular disease. The light microscopic studies of a muscle biopsy from the m. triceps shows the picture of a diffuse muscular atrophy. By electron microscopy, myelin-like degeneration zones with tubular-filamentous inclusions can be shown in the cytoplasma of the atrophic muscle cells. These filamentous structures correspond morphologically to the nucleocapside of paramyxoviruses. These results lead, even without the proof of inflammatory cells, to the diagnosis of an "inclusion body" myositis also taking into account the clinical and electrophysiological findings.

Biopsy↗
PubMed1977

[Behavior modification and obesity (author's transl)].

Good results were obtained treating 49 obese patients with an elaborated selfcontrol behavior modification program. This program was an addition to the normal program of the obesity clinic of the 2. Medizinische Klinik der Universität Düsseldorf. The normal program contains some principles of behavior modification but less accentuated. After the initial 12 weeks of controlled training patients tried to reduce weight further decreasing external control. Only few patients were able to loose additional pounds during this period of 8 weeks. At the end of the initial 12 weeks patients had asked for another control before the vacational season, but only 10 out of 49 appeared at the control sessions 9 months after the program's start. If an additional behavior modification program is considered for incorporation into an already existing weight reduction clinic, additional costs and expected results have to be checked. Durative success of behavior modification techniques in weight loss programs has still to be submitted to proof.

Behavior Therapy↗
PubMed1977

[Psychological problems in obesity (author's transl)].

The MMPI was administered to 209 obese women and 72 obese men before onset of a weight reduction regime. Obese subjects differ in a variety of MMPI-standard-scales from the standard population as well as from a control group of healthy women: 1. Scales Hypochondriasis (Hs) and Hysteria (Hy) have significant higher values for the obese. This somatic impairment grows in the group of obese women with increasing age and obesity. In men, scale Hs corresponds to the degree of overweight but the youngest male age group (up to 19 years) has a Hs-peak as well as men above 35 years of age. 2. Higher than normal values for obese men and women in scales Depression (D) and Psychasthenia (Pt) in the obese point towards emotional upset. 3. Obesity does not decrease Hypomania (Ma) values for men or women; to the contrary: obese men felt more active than the standard population. With growing age women had a decrease in Ma-values.

Adolescent↗
PubMed1977

Influence of dorsal column stimulation (DCS) on spastic movement disorders.

Dorsal column stimulation in two spastic patients with upper motor neurone disease showed the following effects: 1. The subjective feeling of stiffness decreased. During DCS patients were able to walk longer distances without rest. 2. The ability to perform fast alternating or synchronous "pedal-pressing" foot movements improved by 15%. 3. The threshold of H-reflexes was enhanced up to 12%, and outlasted the end of stimulation by two minutes. 4. The H-reflex amplitude was depressed in relation to intensity and duration of DC-stimulation up to 10 minutes after the end of DCS. 5. A late second facilitatory wave at 300 msec in the curve for H-reflexes conditioned by a short tibial stimulus was inhibited during DCS. Although the hyperexcitability of the H-reflex was dampened significantly during DCS the whole motor disturbance improved only slightly.

Adult↗