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Biomedical subjects

J Isenberg

Publications and source records attributed to J Isenberg.

At least 37 records · Page 2Linked to original sources

[Candida spondylitis. Case report and review of the literature].

Candida species have emerged as important pathogens in human infection. Although a variety of deep-seated candidal infections have been reported, Candida spondylitis has rarely been described. One patient with candida tropicalis spondylitis L I and L II in combination with candida coxitis is presented, and the 31 adult cases with vertebral involvement previously reported are reviewed. Candida spondylitis is noted as a simultaneous occurrence or late manifestation of hematogenously disseminated candidiasis. Spondylitis may not be prevented by a course of Amphotericin B adequate to control the acute episode of disseminated candidiasis, particularly in immune suppressed patients. Spondylitis does not present as a postoperative wound infection. The insidious progression of infection, the nonspecificity of laboratory data, and the failure to recognise Candida as a potential pathogen may lead to diagnostic delay. Diagnosis can be made by either open biopsy or CT controlled needle aspiration. Successful therapeutic regimes have employed combinations of antifungal therapy (Amphotericin B or fluconazole) with radical surgical debridement. Ventral and facultatively dorsal instrumentation is required to stabilize the spine. It is anticipated that the spondylitis will become a more commonly recognised manifestation of hematogenously disseminated candidiasis. A increasing significance of candida species as etiologic agents of infection immune compromised humans has been recognised in the recent years. In those patients whom an antecedent Candida septicaemia was documented, a striking delay of 3.3 months was found between the septicaemia and the onset of symptoms as well as the time of diagnosis.

Adult↗

[Management of abdominal stab wounds].

In general, laparotomy is accepted as treatment of choice for abdominal shot wounds. However, the management of abdominal stab wounds is controversial. In order to study the concept of laparotomy for penetrating abdominal trauma our patient collective was analyzed retrospectively. From 1st January 1985 to 31st December 1993 we performed laparotomy in 30 cases of abdominal stab wounds. 24 patients were victims of violence. In 6 patients the cause of injury was a suicidal attempt. Laparotomy was negative in 27% of cases. In most cases explorative laparotomy showed injuries of the vessels (n = 12) and the intestines (n = 9). The mortality rate was 6.7%. None of the fatal cases was caused by negative laparotomy. During a mean follow-up time of 54 months none of the patients showed disorders of late onset after negative laparotomy. Because of the limited diagnostic possibilities to rule out intestine injury and minimal morbidity of negative laparotomies we continue to favour laparotomy in the management of penetrating abdominal trauma.

Abdominal Injuries↗

[Current status of surgical treatment of short bowel syndrome].

Massive small bowel resection results in a short bowel syndrome, characterized by malabsorption, weight loss, diarrhea and steatorrhea. Different surgical techniques have been used to slow down intestinal transit time or to increase the area of absorption. Techniques for the deceleration of intestinal transit are reconstruction of the ileocecal-valve, antiperistaltic intestinal segments, colon interposition, recirculating intestinal loops and intestinal pacing. For increase of the area of absorption growth of neomucosa, mucosal autotransplantation, intestinal lengthening and small bowel transplantation have been performed. All these procedures are still at different experimental levels. Due to inconsistent results so far the surgical therapy of the short bowel syndrom cannot be recommended for routine use. However, some techniques offer hope of a successful surgical development.

Follow-Up Studies↗

Diagnostic yield of duodenal biopsy and aspirate in AIDS-associated diarrhea.

OBJECTIVES: To evaluate the diagnostic yield of performing duodenal biopsies and aspirates in AIDS patients with chronic diarrhea. METHODS: Retrospective review of esophagogastroduodenoscopy (EGD) records from January 1993 to March 1995 to identify those patients who underwent EGD for evaluation of AIDS associated diarrhea and had a duodenal biopsy and/or aspirate. Biopsies were examined for pathogens using routine histology and special stains, viral culture, and electron microscopy. Duodenal aspirates were evaluated for ova and parasites. All patients had previous negative stool studies. Pathology laboratory charges (hospital and professional fees) for each test and charges per positive test were determined. RESULTS: Of the 57 patients included in this study, 56 had a duodenal biopsy and 42 had a duodenal aspirate. An established pathogen was identified in only 15 (26%) patients. One patient had both Mycobacterium avium complex and microsporidia. Pathogens were identified in seven patients by hematoxylin and eosin stain, in three patients by acid-fast bacillus stain, and in six patients by electron microscopy. No pathogens were identified with Gomori's methenamine silver stain (44 patients), duodenal aspirate for ova and parasites (46 patients), immunoperoxidase stains (4 patients), or viral culture (4 patients). Cryptosporidia were identified in six, microsporidia in five, Mycobacterium avium complex in three, and Giardia lamblia and adenovirus each in one patient. CONCLUSIONS: In this series, the diagnostic yield of EGD with duodenal biopsy and aspirate in AIDS associated diarrhea was low. Pathogens were identified in 26% of patients; predominantly Cryptosporidium organisms and microsporidia. The routine performance of aspiration of duodenal contents for parasite examination and staining of duodenal tissue with Gomori's methenamine silver stain for fungal identification are not recommended. One should consider obtaining tissue for electron microscopy whenever duodenal biopsies are performed. The utility of EGD in AIDS associated diarrhea may improve as more effective therapies become available.

AIDS-Related Opportunistic Infections↗

Middle and lower third rectum carcinoma: sphincter saving or abdominoperineal resection?

Sphincter saving resections (SSR) are performed with increasing frequency in carcinoma of the lower and middle third of the rectum. In this retrospective study local and distant recurrence and survival were compared to abdominoperineal resection (APR). In 71 women and 71 men (mean age: 64 years) with a primary adenocarcinoma between 5 and 10 cm from the anal verge 89 SSR, and 53 APR, were performed (Dukes stages--SSR--A 19%; B 30.3%; C 50.7% vs APR--A 15%; B 45.3%; C 39.6%). Patients have been followed up for a minimum of 24 months (mean time 62 months). There were no differences in intraluminal diameters of the tumours in each operative procedure. The distal tumour-free distance was more than 6 cm in 52% after APR (SSR: 10%) and less than 3 cm in 43% after SSR. Survival was not different between procedures in Dukes stages A and B. A survival advantage for patients with Dukes C carcinoma after APR did not reach statistical significance. No differences in distant spread were found for SSR (Dukes stage A 0%; B 7%; C 18%) and APR (Dukes stage A 0%; B 8%; C 14%) for local recurrence in Dukes stages A and B after SSR (A and B 0%) and APR (A 0%; B 8%) whereas a significant increase in local recurrence rate was seen in Dukes stage C after SSR (24% vs, APR 5%). Although a further resection could be performed in almost all of these patients a negative effect of local recurrence on survival occurred (25.4 months with and 80 months without local recurrence). While SSR seems to be favourable in Dukes stages A and B, APR should be considered in carcinoma of the lower and middle third of the rectum with lymphatic spread. Effective preoperative staging determines selection of the appropriate operation.

Abdomen↗

Cyclosporin A: early or delayed onset by prophylactic immunosuppression?

In a prospective randomized trial, 57 renal transplant patients received sequential immunosuppression consisting of lymphocytoglobulin (ALG), azathioprine, and steroids for 14 days (group A) and another 57 patients for only 2 days (group B). In each case therapy was continued with cyclosporin A and steroids. The purpose of this study was to find the most favourable time to switch over to continuous cyclosporin A therapy with avoidance of its nephrotoxic side-effects during the perioperative phase. As a consequence of ALG intolerance, conventional immunosuppression had to be changed in group A after a mean of 7.8 days, as opposed to 2.1 days in group B. The patients receiving a prophylactic therapy with ALG, azathioprine, and steroids for 14 days (group A) had to be dialysed at a significantly greater frequency than patients with an early start to cyclosporin A (group B) from the second to the fourth week. Patient survival rates 1 and 2 years after transplantation of group A (95 and 92%) and group B (96 and 92%) were not distinct, and there was no significant difference in graft survival rates of group A (79 and 79%) and B (89 and 82%) after the same time. A delayed start of cyclosporin A after 14 days showed no further advantage but rather a significantly greater frequency of dialysis; thus the early onset of cyclosporin A treatment post-transplant is preferable.

Adult↗

A data retrieval system for the eye clinic. I. Clinical aspects.

The use of a data retrieval system for patients' ophthalmic records is described. Input is by using simple forms and output is in batch. The system is adaptable for on-line use as soon as a terminal is established in the clinic. To date there are over 6000 patients on file, of whom about one half have no other form of ophthalmic medical record.

Humans↗

A data retrieval system for the eye clinic. II. The programmed system.

The programmed system of a data retrieval system for the eye clinic is described. The system uses an IBM 370/168 computer, involves programmes to minimize the possibility of entering errors and a magnetic tape back-up system to reduce the cost of storing rarely required material and as a safeguard against the accidental erasion of material on disc.

Computers↗

Preoperative immunostimulation by Propionibacterium granulosum KP-45 in colorectal cancer.

In order to improve the perioperative resistance to the spread of cancer during operation the effect of preoperative stimulation of the immunesystem by Propionibacterium granulosum KP-45 was investigated in patients with colorectal carcinoma. In a prospective randomized trial 101 patients were allocated to either treatment (n = 51) or control (n = 50). In the treatment 10 mg of Propioni bacteria were administered intravenously between the seventh and third day prior to surgical treatment. At the time of operation 21 tumours were classified as stage I (treatment n = 12, control n = 9), 22 as stage II (treatment n = 10, control n = 2). Postoperatively wound infections requiring treatment were more prevalent in the control group (n = 4) than in the treated group (n = 0). All patients were subsequently followed up for 76 months. For stage I carcinoma the survival rates, excluding perioperative deaths, were 91% in the treated and 63% in the control group respectively. One case of tumour metastasis was seen in the control group. For stage II carcinoma the survival rate was 90% for the treated group with distant spread in 1 case and 45% in the control group where the rate of recurrence was 55%. For stages III and IV there was no statistically significant difference in survival between the treated and the control groups.

Adjuvants, Immunologic↗

Immunostimulation by propionibacteria--effects on immune status and antineoplastic treatment.

Experimental studies were performed to investigate further the effects of immunotherapy with Propionibacterium avidum KP-40 on thymocyte proliferation, maturation and emigration in BALB/c-mice. Thymus weight and thymocyte counts, especially cells presenting the immature or cytotoxic/suppressor phenotype were significantly increased. Due to enhanced emigration, peripheral blood lymphocyte and monocyte counts as well as expression of activation markers were significantly upregulated. The antimetastatic effect of Propionibacterium avidum KP-40 was demonstrated in BALB/c-mice, where RAW 117-H10 lymphosarcoma liver colonization was significantly reduced after immunostimulation. Clinical investigations proved that surgical treatment of colorectal carcinoma induced an evident decrease of peripheral blood lymphocytes as compared with preoperative counts. However, single preoperative Propionibacterium avidum KP-40 administration induced a considerable increase of peripheral white blood cell counts, especially lymphocytes. Clinical effects of preoperative immunostimulation by Propionibacterium granulosum KP-45 were investigated in a prospective randomized trial in colorectal carcinoma patients. Positive effects on survival time, local tumor recurrence and distant metastasis could be demonstrated in stages I and II, whereas no advantage of immunotherapy was found in advanced stages III and IV. A recent prospective randomized clinical trial was initiated on the quality of life of colorectal carcinoma patients. Three months after surgical treatment negative effects could not be determined after immunotherapy. Quality of life even proved to be better in patients with abdominoperineal resection as compared to non Propionibacterium avidum KP-40 treated control patients.

Adjuvants, Immunologic↗

Gender related survival in colorectal cancer.

The importance of patient characteristics to long term survival in colorectal carcinoma is the subject of much debate. The importance of female gender as an advantagous factor in prognosis is difficult to determine. A retrospective study based on data from 1050 patients resected for colorectal carcinoma was carried out. A complete follow-up and survival data were available. Categorical variables such as age, sex, tumor stage and location, perioperative blood transfusions, and postoperative complications were used. Standard univariate and multivariate descriptive analysis was applied. In addition to tumor staging patients' sex was a strong significant factor on prognosis. When analysed independently of tumor location, blood transfusions, and severe complications, sex was revealed to be a statistically significant independent prognostic factor in longterm survival. The 5-year survival rate for men was 43.5 % and 54.7 % for women. When the observed survival was compared with sex related life expectancy of a representive population, similar differences of survival were seen for both sexes.

Adenocarcinoma↗