B-cell growth factor receptor expression and B-cell growth factor response of leukemic B cell precursors and B lineage lymphoid progenitor cells

The purpose of this study was to analyze the expression of B cell growth factor (BCGF) receptors and to elucidate the biologic effects of biochemically purified natural BCGF at the B cell precursor stage of human B lineage lymphoid differentiation. The specific binding of radioiodinated high-mol-wt BCGF (125I-HMW-BCGF) and low-molecular-wt BCGF (125I-LMW-BCGF) to fresh marrow blasts from B cell precursor acute lymphoblastic leukemia (ALL) patients was initially investigated. The estimated number of radioiodinated BCGF molecules bound per blast ranged from undetectable to 24.3 X 10(3) for HMW-BCGF, and from 11.5 X 10(3) to 457.8 X 10(3) for LMW-BCGF. In 3H-TdR incorporation assays, 75% of cases showed a significant response to LMW-BCGF with a median stimulation index of 9.3. By comparison, only 33% of cases showed a significant response to HMW-BCGF with a median stimulation index of 2.4. Subsequently, B cell precursor colony assays were performed to assess and compare the biologic effects of BCGF on leukemic B lineage lymphoid progenitor cells. Among 28 cases studied, 57% responded to both HMW-BCGF and LMW-BCGF, 21% responded only to LMW-BCGF, and the remaining cases showed no proliferative response to either growth factor. The response patterns of virtually pure populations of FACS- sorted leukemic B cell precursors were essentially identical to the proliferative responses of unsorted leukemic B-cell precursors. Synergistic effects between HMW-BCGF and LMW-BCGF were observed in 80% of the cases that responded to both. The numbers of cell-bound radioiodinated BCGF molecules, the stimulation indices, as well as the number of B cell precursor colonies in BCGF-stimulated cultures showed a marked interpatient variation. Patients with structural chromosomal abnormalities (SCAs) involving 12p11-13 or patients with a Philadelphia chromosome showed a greater HMW-BCGF response at the level of leukemic progenitor cells than did other patients (P = .02). The LMW-BCGF response was significantly greater for patients with SCA than for patients without SCA (P = .04). The response of leukemic progenitor cells to HMW-BCGF or LMW-BCGF did not correlate with sex, age, disease status, FAB morphology, WBC at diagnosis, or immunophenotype. To our knowledge, this study represents the first detailed analyses of BCGF receptor expression and BCGF effects in B cell precursor ALL. The data presented provide direct evidence for the expression of functional receptors for both HMW-BCGF and LMW-BCGF in B cell precursor ALL.     

Treatment tactics of patients with choledocholithiasis complicated with acute cholangitis

The results of observation and treatment of 137 patients with choledocholithiasis complicated acute cholangitis are presented. The estimated scale APACHE II is adopted for the state severity of patients with choledocholithiasis and cholangitis sigh determination are examined. With multivariant correlative-regression analysis the most informative factors are determined, its grade estimation are carrying out. Optimal treatment tactics depended from state severity is definited. It permits to improve the treatment results owing to decrease of postoperative complications frequency, duration of patients therapy in hospital.     

Diagnostics and treatment of postcholecystectomy biliary complications

The study concerns early postoperative bile leak and obstructive jaundice syndrome after cholecystectomy. 4865 patients were included in the study. The initial cholecystectomy was performed through the traditional laparotomy (n=2122), minilaparotomic access (n=1024) and laparoscopic access (n=1710). Early biliary complications were registered in 135 (2,8%) patients, of whom 47 had bile leak and 88 develop obstructive jaundice. The external drainage bile leak was registered in 0,68%; bile leak trough the trained common bile duct had 0,17% and bile leak into the abdominal cavity had 0,12% of these patients. In 17 cases the bile leak was caused by the cystic duct stump insufficiency, 12 cases were caused by bile leak from the gall bladder bed. 73,5% of bile leak were caused by misdiagnosed choledocholithiasis and papilla Vateri stenosis. Obstructive jaundice in early postoperative period was determined by underdiagnosed bile ductal pathology in the majority of patients (84 patients of 88). The main diagnostic method of biliary complications was the retrograde cholangiopancreaticography with the efficacy of 99,2%. Endoscopic transpapillary operations were curative in 97% of cases. Complications after endoscopic manipulations developed in 3,3%, all of them were successfully conservatively treated.     

Bypass grafting of the celiac trunk of superior mesenteric artery in treatment of patients with chronic ischemia of digestive organs

In the period from 1984 to 2010 operations were made on 41 patients aged from 36 to 76 years with chronic ischemia of digestive organs (CIDO), infarction of the small intestine was determined in 7 of them mainly due to atherosclerotic injury of the celiac trunk (CT) and/or superior mesenteric artery (SMA). In 41 patients antegrade (15) or retrograde (26) shunting of CT and/or SMA were fulfilled with synthetic prostheses in combination with resection of the small intestine in 7 patients, with lethal outcome in 2 of them only. No prosthesis infection was noted. Lethality in early terms was 17.1% mainly at the early stage of the work. Observations during the period from one month to 24 years were followed up in 26 (63.4%) patients. Their state remains satisfactory, the shunts are patent. In treatment of patients with CIDO the antegrade and retrograde shunting of CT and/or SMA are shown to be effective methods.     

Intestinal gallstone obstruction

Three cases of intestinal obstruction due to obturation with gallstones are presented. These patients made 1,3% of all patients operated for acute intestinal obstruction and 0,2% of all patients operated for cholelithiasis. This variant of intestinal obstruction is rare disease and is not characterized with a typical picture and specific symptoms. Analysis of complaints, anamnesis, additional methods of abdominal examination help to suspect biliary ileus. In emergency cases scope of surgery must be minimal and directed to adequate elimination of intestinal obstruction. Indications for simultaneous disjunction of biliodigestive fistula depend on many factors which must be regarded individually for each patient.