PubMed HealthSearch

Biomedical subjects

P Huber

Publications and source records attributed to P Huber.

At least 19 recordsLinked to original sources

[Evaluation of TSH suppression using a 3d-generation TSH assay: diagnostic and therapeutic consequences].

UNLABELLED: We measured basal and TRH-stimulated TSH values with a 3rd generation assay in patients under suppressive thyroxine (T4) therapy for thyroid carcinoma or goiter and in patients with overt hyperthyroidism. All hyperthyroid patients had undetectable basal TSH levels (< 0.01 mU/l). In patients on suppressive T4 treatment basal TSH values were undetectable in 37.5% (= group A) and measurable in the intermediate range of 0.01-0.05 mU/l in 62.5% (= group B). After TRH administration there was no TSH increase in the hyperthyroid patients (< 0.01 mU/l in 100%). T4-treated patients of group A showed no relevant TSH stimulation in 58% (peak < or = 0.05 mU/l = total TSH suppression). An increase of > 0.05 mU/l could be measured in 42% of group A and 100% of group B (= subtotal TSH suppression). Many of these TSH values measured by a 3rd generation assay are in the undetectable range for most of the commercially available 2nd generation assays (< 0.10 mU/l). CONCLUSION: TSH assay of the 3rd generation decisively improves the diagnosis of hyperthyroidism and probably also borderline hyperthyroidism. Against the background of increased risk of osteoporosis and cardiac function disorders as a result of suppressive T4 treatment, our results suggest the following practical therapeutic guidelines: total TSH suppression with the risk of iatrogenic hyperthyroidism should be confined to high risk patients (eg with metastatic thyroid cancer). Where the risk is low, however (thyroid cancer with favourable prognosis, goiter, goiter prophylaxis), only subtotal TSH suppression is indicated.

Adult

Localization of central lesions by correlation of CT findings and neurological deficits.

In a prospective study involving 100 patients with lesions in the precentral gyrus or pyramidal tract we sought to correlate clinical findings and the results of an axial computed tomography (CT) to localize the lesion. In 85% of patients the size and location of the lesion visible on CT correlated well with the type and severity of the neurological symptoms and signs. However, in the remaining 15% of patients the CT findings did not correlate well with the patient's neurological deficit, showing that in these patients the anatomy of the central area was variable or distorted by the space-occupying lesion. We suggest that in such patients neurophysiological techniques be used intra-operatively for reliable localization of the motor strip.

Adolescent

Association between the activation of macrophages, changes of iron metabolism and the degree of anaemia in patients with malignant disorders.

In this study, we investigated a possible association between the degree of macrophage activation - as measured by serum neopterin concentrations - and disturbances of iron metabolism, determined by the concentrations of ferritin and serum iron, in patients with malignant disorders. Additionally we evaluated correlations between these factors and the degree and type of anaemia. Seventy-three patients, who suffered from non-Hodgkin's lymphoma (NHL) (n = 43), Hodgkin's disease (n = 11), myeloma or monoclonal gammopathy of unknown significance (n = 9), myelodysplastic syndrome (n = 1), and solid tumours (n = 9), were examined. Mean neopterin levels were raised in all groups, patients with NHL showing the highest concentrations. Ferritin but not neopterin concentrations were higher in males than in females. A significant correlation was found between neopterin and ferritin concentrations (p less than 0.01). Considering only female patients the strength of the correlation was the same (p less than 0.02). In addition, we found inverse correlations of neopterin with haemoglobin and iron concentrations (all p less than 0.01). Similar relationships existed in patients during follow-up. Our results support the hypothesis of an association between the degree of activation of macrophages and the development of anaemia by a shift or iron towards the storage sites.

Adult

Spinal leptomeningeal neoplastic disease. Evaluation by MR, myelography and CT myelography.

Out of 16 patients, spinal leptomeningeal neoplastic disease was diagnosed by MRI in 4 patients, myelography in 14 patients and CT myelography in 12 cases. MR was superior to myelography in 2 patients, in another 2 patients MRI was equally diagnostic. The cerebrospinal fluid of every patient contained malignant cells. Histological evidence for primary central nervous system tumors was found in 5 cases. In 10 cases, non-neuraxial malignancy consisted of small cell carcinoma of the lung (7 cases), and leukemia and lymphoma (3 patients). In 1 patient, primary leptomeningeal malignant melanoma was confirmed at autopsy. Preferential thoracolumbar neoplastic morphologic manifestation correlated with the presence of conus and cauda equina syndrome in 9 patients, low back pain, paresthesia and spinal root signs in 7 patients. False-negative interpretation of myelography in 2 patients with positive MR findings, and the impressive sensitivity of gadolinium Dota to improve visualization of subarachnoid spread, favor MRI as an alternative imaging technique in the assessment of patients with suspected intradural extramedullary malignancy.

Adult

Neuro-Behçet: acute and sequential aspects by MRI and MRS.

Three patients with neuro-Behçet underwent MRI and MRS during acute illness. After therapy, MRI and MRS were performed in 3 and 1 patients, respectively. MRI revealed a marked improvement of the initial lesion in 2, a complete remission in 1 patient. MRS showed a reduction of the N-acetyl-aspartate (NAA)/phosphocreatine (CR) ratio within the acute lesion in all patients and a normalization in the follow-up spectrum of the examined patient.

Adrenal Cortex Hormones

Primary intraventricular oligodendrogliomas.

Two cases of primary intraventricular oligodendrogliomas which were successfully removed by a transventricular approach using microtechniques are presented. Oligodendrogliomas in this location are very rare. The literature is reviewed.

Adolescent

[Sex hormone binding globulin (SHBG), a new metabolic in vitro thyroid function test].

SHBG (sex hormone binding globulin) is a carrier protein for the sex hormones testosterone and estradiol with a molecular weight of about 95000 dalton. It can be used as a metabolic test of thyroid function. SHBG was measured by the adsorption method of Mickelson and Petra; the SHBG contained in serum is incubated with 3H-5alpha-dihydrotestosterone and adsorbed to a cellulose filter. Thirty-eight female patients with hyperthyroidism before treatment had markedly elevated levels of SHBG (x +/- SD: 4.85 +/- 2.4 microgram DHT/100 ml) compared with normal controls (1.50 +/- 0.57; p is less than 0.001). A good correlation between the thyroid hormones and SHBG could be domonstrated which was better for T3 than for T4:r =0.76 (p is less than 0.001) for T3 and r= 0.65 (p is less than 0.001) for T4. This agrees with the clinical finding that the circulating T3 level is a better index of the metabolic severity of thyrotoxicosis than T4. After radioiodine treatment SHBG returns to normal values in euthyroid patients (1.38 +/- 0.8; n = 15) and remains elevated in persistent hyperthyroidism (3.99 +/-1,6; n = 67). Even in patients with persistent biochemical hyperthyroidism who are completely euthyroid on clinical examination, SHBG remains high. Despite lack of evidence of clinical hyperthyroidism, this metabolic test demonstrates the biologic significance of merely biochemical hyperthyroidism. Estimation of SHBG as a metabolic thyroid function test in vitro is of special value for the evaluation of patients showing discrepancies between the clinical and biochemical states and for borderline hyperthyroidism.

Carrier Proteins

[Prognosis of acute upper gastrointestinal bleeding before and after the introduction of emergency endoscopy (author's transl)].

A total of 416 patients had been admitted to hospital for acute upper gastrointestinal bleeding, about half of them before the introduction of endoscopy. There was a highly significant decrease in total mortality rate by 18 percent since the introduction of endoscopy. The reason for this is probably largely the much higher number of correct identification or localisation of bleeding points by endoscopy (98 percent) when compared with conventional radiological examination.

Adult