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Biomedical subjects

M Molzahn

Publications and source records attributed to M Molzahn.

At least 19 recordsLinked to original sources
PubMed1990

[Chronic use of analgesics].

Quantitative aspects of longterm analgesic intake are presented, based on a case-control-study on the relation between regular analgesic intake and endstage renal failure in the area of West Berlin (1984-86). Lifetime analgesic consumption of more than 1000 persons were investigated. A total of 285 longterm analgesic users (185 cases = 35.8%; 100 controls = 19.3%) were detected. An odd ratio of 2.44 (95% CI: 1.77-3.39) was computed. Regular analgesic intake was defined as an intake of at least 15 analgesic doses per month continuously over a period of at least 12 months. 90% of the regular users preferred mixed analgesics compounds, in most cases with the psychotropic additive caffeine.

Adult↗
PubMed1989

[Oncogenic hypophosphatemic osteomalacia].

In the courses of six years a severe hypophosphataemic osteomalacia, painful motor impairment and multiple rib fractures developed in a 51-year-old man. The symptoms gradually improved within one year under treatment with 3 micrograms daily of 1,25-dihydroxycholecalciferol, 3 g phosphorus and 3 g calcium, and biochemical parameters and the bone scintigram became normal. Ultimately, computed tomography, scintigraphy and digital subtraction angiography revealed a highly vascularized tumour in the condylar aspect of the right femur, and it was chiselled out. Histologically it was a mesenchymal phosphaturic tumour of haemangiopericytoma type of questionable benignity. After the operation the patient was symptom-free for some weeks without any drug treatment, but the latter was then resumed because of renewed bone pain. By now, two years later, he is essentially without pain and has full mobility. However, repeat scintigraphy and angiography revealed renewed tumour growth in the right femoral condyle.

Calcitriol↗
PubMed1989

Regular analgesic intake and the risk of end-stage renal failure.

The strength of the association between regular analgesic intake (RAI) and end-stage renal failure (EF) has been insufficiently established until now. A case-control study was conducted to estimate the relative risks (RR) of EF after RAI (defined as consumption of 15 or more analgesic doses per month for a continuous period of at least 1 year) for cumulative drug intake, single-ingredient analgesics, combinations, and specific compounds. The case group included all patients with EF undergoing renal replacement therapy in the area of West Berlin (1984-1986, n = 921). Control subjects, matched to cases by sex, age, and nationality, were selected from a group of patients in outpatient clinics. Matching was possible for 517 cases. The RR of EF after RAI of any analgesic was 2.44 (95% confidence interval: 1.77-3.39) and after RAI of combination drugs 2.65 (95% confidence interval 1.91-3.67). No significant increase was found, however, after RAI of single-ingredient analgesics. The RR after RAI of combination drugs and for the most preferred analgesic ingredients (phenacetin, paracetamol, acetylsalicylic acid, phenazones, caffeine) increased with dose. Furthermore, a dose-time-related RR after RAI of the longest used preparation was found. Thus, the results clearly show an increased RR of EF after RAI related to both dose and exposure time of mixed analgesic compounds, but not for the use of only single-ingredient analgesics.

Adult↗
PubMed1987

[Analgesic consumption in the Federal Republic of Germany. The extent and the risk groups].

An analysis of still unpublished sales statistics shows that during 1976-1983 the annual sales of all analgesic package units remained relatively stable (about 115 million units per year), while the consumption of large packings mostly preferred by analgesic abusers increased from 8.13 to 11.28 million (units of 100 tablets). The annual per capita consumption of analgesic substances (1983) was 18.2 g. Among these, drugs containing salicylate and phenazone headed the list, whereas phenacetin consumption is increasingly on the downgrade (0.87 g per capita). 95% of all analgesics are used outside of the clinics. Furthermore, 80% of them are purchased on the prescription-free market. High consumption of analgesics can be assumed in 5% of the normal population. Analgesic abuse is more prevalent in women, especially in some industrial areas.

Analgesics↗
PubMed1987

Effect of dialyzer membranes on in vitro generation of eicosanoids.

Eicosanoids are potent substances released from blood cells after contact with foreign materials. Eicosanoid generation, in addition to complement fragment formation, may be a valuable indicator of the biocompatibility of dialyzer membranes. In the present in vitro study, eicosanoid generation induced by several different flat dialyzer membranes [polyacrylonitrile (PAN), cuprammonium cellulose (CC), and polycarbonate (PC)] was evaluated and compared using blood from non-uremic healthy volunteers. Generation of prostaglandin E2 (PGE2) and thromboxane B2 (TXB2) was greatest with PC followed by PAN and CC. The formation of C3a des arg with PAN was less than with either CC or PC. Our results suggest that dialyzer membranes affect complement activation and eicosanoid generation differently; biocompatibility as expressed by a low level of complement fragment formation does not necessarily translate into biocompatibility when considering eicosanoid generation.

Acrylic Resins↗
PubMed1986

Acute interstitial nephritis and non-oliguric renal failure after cefaclor treatment.

A case of acute interstitial nephritis (AIN) developing after cefaclor treatment is reported. Diagnosis was proofed by kidney biopsy and lymphocyte transformation test. The clinical course of the patient with non-oliguric renal failure was favourable. Four weeks after discontinuation of cefaclor treatment the renal function was completely restored and remained stable over the ten-month follow-up period. It is concluded that cefaclor can cause hyperallergic AIN and acute renal failure.

Acute Kidney Injury↗
PubMed1986

The influence of long-term infusion of the calcium antagonist diltiazem on postischemic acute renal failure in conscious dogs.

The influence of long-term infusion of the calcium-entry blocker diltiazem on postischemic acute renal failure was investigated in conscious dogs monitored by implanted instruments. In 18 uninephrectomized beagle dogs on a salt-rich diet, an electromagnetic flow probe and an inflatable plastic cuff were placed around the renal artery. Acute renal failure was induced by inflating the cuff for 180 min in the conscious animal. Group A (n = 5, control) received an intraaortic injection of 0.9% NaCl (5 ml/day) from the 3rd day before until the 7th day after ischemia and group B (n = 6, posttreatment) an intra-aortic injection of diltiazem (5 micrograms X min-1 X kg-1) beginning at the end of ischemia until the 7th day. Group C (n = 7, pre- and posttreatment) received diltiazem from the 3rd day before until the 7th day after ischemia. In group A, renal blood flow dropped from 149 +/- 16 (preischemic) to 129 +/- 29 ml X min-1 on the 1st day after ischemia. In contrast, renal blood flow increased on the 1st postischemic day in both treatment groups by 29 +/- 15% (group B, P 0.05) and 14 +/- 13% (group C). In the following days, there was no significant difference in renal blood flow between groups A, B and C. In group B, the reduction of the glomerular filtration rate was similar to that in the control group.(ABSTRACT TRUNCATED AT 250 WORDS)

Acute Kidney Injury↗
PubMed1986

The analgesic problem in the Federal Republic of Germany: analgesic consumption, frequency of analgesic nephropathy and regional differences.

The recent withdrawal of phenacetin from the pharmaceutical market in the FRG has stimulated the discussion of the extent of analgesic abuse and analgesic nephropathy (AN). Data from wholesale statistics, given here, revealed in the FRG population a high yearly per-capita consumption of analgesics (18.2 g), mostly used in mixed compounds. According to standardized data, the FRG ranks first among the north European countries. We suggest that the prevalence data given from the EDTA-registry (4.6% of the endstage renal population) underestimates the real extent of AN. AN in the FRG shows a north-to-south decline and is most prevalent in northern areas and West Berlin. It is assumed that the analgesic dilemma in the FRG is identical to the dilemma in Switzerland and Belgium.

Adolescent↗
PubMed1985

[Characteristics of terminal analgesics-induced nephropathy].

The diagnosis of analgesic-associated nephropathy (AAN) may be missed because of the patients denial or regular analgesic intake. We therefore performed a cross-sectional study of the 144 patients of our hemodialysis center to investigate differences between the 48 patients with AAN (33%) and patients with other kidney diseases who served as controls. The aim was to find other attributes of analgesic users relating to social history, habits and morbidity. Dialysis patients with AAN were significantly older (60 +/- 10 versus 52 +/- 15 years) and more frequently women (65% versus 37%) compared with controls; they often had a family history of analgesic abuse. Comparison with an age-matched control group of hemodialysis patients with other kidney diseases showed that AAN patients smoked, used hypnotics and laxatives, and required prescriptions significantly more frequently; they were less frequently willing to undergo renal transplantation. With regard to accompanying diseases, they suffered significantly more often than the age-matched controls from anemia, renal osteodystrophy, peptic ulcer disease, diverticulosis, hemorrhoids, atrial fibrillation, coronary heart disease, hyperlipidemia, carpal tunnel syndrome, and urinary tract infections. The characteristic pattern of habits, social history and accompanying diseases may facilitate the diagnosis of AAN even in cases where analgesic consumption is denied.

Age Factors↗
PubMed1985

Haemodialysis in 'hepatorenal syndrome': report on two cases.

We report two patients with hepatorenal syndrome who recovered from oliguria and renal failure after temporary treatment with haemodialysis. Hepatorenal syndrome developed under diuretic treatment in both patients. Volume expansion, dopamine, and prostaglandin I2 did not improve renal function. In the one patient with alcoholic cirrhosis, renal biopsy showed only minimal alterations of glomeruli, tubuli, and arterial vessels. In the other case, the deterioration and improvement in renal function parallelled changes in acute alcohol-toxic hepatic function. We conclude that haemodialysis should be considered for treatment of hepatorenal syndrome in selected patients where reversal of liver failure can be expected.

Acute Kidney Injury↗
PubMed1985

Low cyclosporin A blood levels and acute graft rejection in a renal transplant recipient during rifampin treatment.

Cyclosporin A trough blood levels were unusually low during rifampin treatment in a kidney transplant patient. Simultaneously, acute graft rejection occurred. Pharmacokinetic investigation revealed a rapid turnover of cyclosporin A leading to low blood levels. Cessation of rifampin therapy reversed these changes. Rifampin substantially reduces the bioavailability of cyclosporin A and should not be used in transplant recipients on cyclosporin A.

Adult↗
PubMed1985

Value of human chorionic gonadotropin measurements in blood as a pregnancy test in women on maintenance hemodialysis.

Human chorionic gonadotropin (hCG beta) values were determined in the blood of 19 women and 4 men on maintenance hemodialysis. Blood samples were taken 3 times at an interval of 1 week. Measurements were done by an hCG beta RIA kit (Serono). The median hCG beta values were 9 mIU/ml (range 0-116) in 7 menstruating women, 6 (0-25) in 11 postmenopausal women and 0 (0-7) in 4 men. There was no statistically significant difference between the 3 groups. The median hCG beta values in all 3 groups were below the upper normal limit. However, the individual measurements varied considerably with elevation in 32% of 52 measured values (10-fold elevation in 2 cases). We conclude that in the blood of non-pregnant women on chronic hemodialysis, elevated hCG beta values can be found, erroneously indicating an intact pregnancy of 3-5 weeks duration or a nonintact pregnancy (e.g. impending abortion, extrauterine gravidity).

Chorionic Gonadotropin↗