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Biomedical subjects

G Schachschal

Publications and source records attributed to G Schachschal.

8 recordsLinked to original sources

Small bowel involvement in Crohn's disease: a prospective comparison of wireless capsule endoscopy and computed tomography enteroclysis.

BACKGROUND: Wireless capsule endoscopy (WCE) offers endoscopic access to the small bowel and may therefore change diagnostic and therapeutic strategies in small bowel diseases. AIM: The aim of this prospective study was to validate the gain in information and therapeutic impact of WCE in patients with Crohn's disease. METHODS: Fifty six consecutive patients with Crohn's disease underwent computed tomography (CT) enteroclysis, and if stenoses <10 mm were excluded, WCE was carried out. RESULTS: In 15 patients (27%), WCE could not be performed due to strictures detected by CT enteroclysis. From the other 41 patients, jejunal or ileal lesions were found in 25 patients by WCE compared with 12 by CT enteroclysis (p=0.004). This gain in information was mainly due to detection of small mucosal lesions such as villous denudation, aphthoid ulcerations, or erosions. Both methods were not significantly different in the detection of lesions in the terminal/neoterminal ileum (WCE 24 patients, CT enteroclysis 20 patients). Therapy was changed due to WCE findings in 10 patients. Consecutively, all of them improved clinically. CONCLUSIONS: Capsule endoscopy improves the diagnosis of small bowel Crohn's disease. This may have significant therapeutic impact.

Adult↗

Thalidomide for treatment of severe intestinal bleeding.

Apart from its anti-inflammatory activity, which has been used for the treatment of active Crohn's disease, thalidomide is also a potent inhibitor of angiogenesis. We therefore studied the effect of thalidomide in six patients with severe recurrent intestinal bleeding refractory to standard treatment (three patients with Crohn's disease (CD), three patients with obscure intestinal bleeding; mean of 56 blood transfusions within the last 24 months). Bleeding stopped within two weeks after the start of thalidomide in all patients. Haemoglobin normalised without further transfusions for the whole observation period (mean follow up 33 months) while patients needed a mean of 2.2 (CD) and 3.1 (obscure bleeding) blood units/month in the 12 months before treatment. After three months of thalidomide therapy, serum levels of vascular endothelial growth factor were strongly suppressed compared with pretreatment levels. (CD 818 (82) v 129 (86) pg/ml; obscure bleeding 264 (68) v 50 (25) pg/ml). All six patients reported transient fatigue. Peripheral neuropathy was observed in one patient with CD after nine months and was reversible after lowering the dose to 100 mg daily. These results indicate that thalidomide might be useful for patients with otherwise refractory intestinal bleeding.

Adult↗

Emerging indications for MARS dialysis.

MARS stands for Molecular Adsorbent Recirculating System and represents an interesting option in treating patients with liver disease. There is still little known about the best time point of initiating this treatment and the exact selection criteria for patients who may benefit from this therapy. The list of potential applications using this procedure is expanding. We report on the experience in seven patients being treated with MARS dialysis for chronic cholestatic liver disease and acute on chronic liver failure. From August 2000 to October 2001 seven patients received 27 MARS treatments in our clinic, ranging from 2 to 12 treatments per subject. Presented cases were diagnosed as steatohepatitis because of alcoholism (n = 3), vanishing bile duct disease (n = 1), metabolic liver disease (n = 1), primary biliary cirrhosis (n = 1) and drug-induced hepatitis (n = 1). Based on this experience, we discuss the ongoing questions of various indications and the decision to initiate MARS dialysis.

Adult↗

Controlled clinical trial of doxorubicin and tamoxifen versus tamoxifen monotherapy in hepatocellular carcinoma.

OBJECTIVES: Treatment results of advanced hepatocellular carcinoma have remained unsatisfactory; the response rates to intravenous doxorubicin are no better than 20%. Oral tamoxifen has been proposed on the basis of beneficial results in some trials. The aim of this study was to evaluate whether the addition of doxorubicin to oral tamoxifen improves survival compared to oral tamoxifen alone. METHODS: Thirty-two consecutive patients with a priori defined contra-indications against surgery (transplantation, resection) or chemo-embolization were evaluated to receive chemotherapy. All patients received oral tamoxifen 30 mg bid; 16 also received intravenous doxorubicin 50 mg/m2 every 4 weeks. The control group consisted of the remaining 16 patients who either were considered unfit for doxorubicin because of a Karnofsky index < 50% (n = 5), cardiac disease (n = 6) or who refused to have cytotoxic drug therapy (n = 5). RESULTS: Median survival time was 148 days (95% CI 89.2-206.8) in the doxorubicin group and 96 days (95% CI 49.0-143.0) in the control group, and this was not significantly different (P= 0.408), regardless of the presence or absence of cirrhosis. CONCLUSIONS: In conclusion, the results of our study indicate that combination therapy using doxorubicin and tamoxifen is unlikely to considerably improve survival compared to tamoxifen alone in patients with advanced hepatocellular carcinoma.

Administration, Oral↗

High prevalence of pulmonary diffusion abnormalities without interstitial changes in long-term survivors of liver transplantation.

Abnormalities in lung function are frequent findings in patients with terminal stage chronic liver disease. While spirometric parameters improve early after liver transplantation, a reduction in diffusion capacity has been reported up to 15 months after transplantation. It is unknown to what extent this disturbance in gas exchange occurs among long term survivors after liver transplantation. We assessed lung function in terms of spirometry, and gas exchange as well as pulmonary morphology by high resolution computed tomography (HRCT) in 40 patients 38 months (median, range 20-147 months) after liver transplantation. The prevalence of restrictive or obstructive changes was not different from predicted values. For the whole group of long-term survivors the carbon monoxide transfer coefficient (KCO) was reduced to 71.3 + 12.0% predicted (P < 0.05). HRCT revealed interstitial changes in only 2/40 (5.0%), emphysematous bullae in 2/40 (5.0%) and pleural thickening in 9/40 (22.5%). Diffusion abnormalities are prevalent in the majority of patients after liver transplantation, whereas spirometric abnormalities are absent also in the long term. The high prevalence of impaired gas exchange and the absence of interstitial lesions imply that changes in pulmonary blood vessels are the most likely cause.

Adolescent↗

[Significance of linear cervix mucus penetration for the evaluation of spermatozoa quality].

Linear mucus penetration of spermatozoa from 75 arbitrary selected men was evaluated using a non-commercial bovine cervix mucus preparation in the same way as Penetrak, but using round glass capillary tubes instead of flat plastic tubes. The mean penetration value was 28.7 +/- 7.10 mm in 90 min and the mean sperm density 36.0 +/- 22.79 x 10(6) ml. Mucus penetration was more correlated to sperm density (r = 0.6) than to any other semen parameter. Consequently it seems to be necessary to evaluate a sliding discrimination index for adequate penetration rate depending on sperm density (regression line and confidence interval). Numerical methods for comparison of penetration rates are suggested.

Animals↗