Bartter's syndrome is characterized by hypokdlemic metabolic alkalosis, hyperrcninemia, aldostcronlsm. normotcnsion and hyperplasia of he juxtdglomerul~r apparatus (JGA). A retruspectlvc analysis of four infants, ages 5 to 8 months (6' 1.2 m.) who were fed milk free soy isolate formula (N) for 5 ; 1.2 months wd5 undertaken. All the patients sought medical attention for failure to thrive (FTT) and all of them had signs and symptoms undistinguishable of BS, namely severe metdhol~c acidos~s (pH 7.62: 0.6). HC03 40 ' 3 (BE + 17 ? 3). Hypuchloremia (C1 72 ' 9 mEqil Hypokalemici (K 2.8 + 0.3 mEqll.) Hypercd1cemi.t was observed in 2 patients. One patient had microscopic hematuria; 3 pat~ents had renin levels in excess of 300 nglml/hr associated with high aldosterone levels in the presence of normutension. Initial urinary electrolytes showed continuous moderate K and Na, wlth mlnlmal chloride loss. Formula change and intravenous NaCl lead to rapid correction of abnormal laboratory results. The severe metabolic abnormalities observed in these infants cannot be explained solely by the low chloride levels in this formula, nor the high renin and aldosterone or the microscopic hemdturia. Prostaglandin-like substances, or precursors of them should be taken into 'onsideratin. Prospective studies of this occurrence mdy help to develop an animal model to further understandlrtg of BS. URINARY TRACT INFECTIONSHORT TERFl TREt~TMEliT OF CllILDHOOD UTI. Forty children were randomly assigned a 3-or 10-days treatment with TPlP/SDZ, administered twice daily in a dose of 16/4 m g per k g bw per day. They ell had symptomatic lower UTIs with significant bacteriuria. Temperature below 38'~ and E S H below 10 mm in the first hour excluded the existence of an upper UTI. Results: All children were abacteriuric at control -three days after the cessation of therapy. Out of 17 children on three days of therapy, infection recurred in two, two months after the index infection. Out of 23 patients treated for 10 days, infection recurred also in two patients, two and five m o n~h 5 after the index infection. It is concluded from this study that in children with an acute lower UTI, treatment with TflP/SDZ for three days is ePfective in eradicating the bacteria and that the treatment does not increase the risk of early recurrence as compared to treatment for 10 days. 9The pk antigen as receptor for pyelonephritic E.coli Kallenius, G., Mallby, R., Lundblad, A . , Winberg, J., Department of Pediatrics, Karolinska Hospital, Karolinska Institute, Stockholm, Department of Bacteriology, National Bacteriological Laboratory, Stockholm and Department of Clinical Chemistry, University Hospital, Lund, Sweden.The specific D-mannose resistant agglutination of hunan erythrocytes (!1RHAhUr,,) observed in uropathogenic E.coli strains was invest~gated. 14 consecutive pyelone?hritic E.coli strains were studied. All agglutinated human er:rthrocytes irrespective of their ABO or Lewis bloodgroups. Veither was the HA affected by the content of H or I antigens on the erythroc...

SummaryA monoclonal antibody of IgG2a-type was obtained against a specific fast acting plasminogen activator inhibitor found in placenta. The placental inhibitor was purified by affinity chromatography using the monoclonal antibody and additionally in a FPLC-system. A strong complex formation was found between the inhibitor and urokinase and also with the two-chain form of plasminogen activator of the tissue-type. A weaker complex was found between the placental inhibitor and the one- chain form of the tissue-type activator.

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The specificity of five mouse monoclonal anti-A blood group antibodies (Ab), four of which were produced by immunization with cultured human cancer cells and one with a synthetic antigen, has been determined by examining their reactivity with purified A glycolipids, erythrocyte glycolipids, oligosaccharides, ovarian cyst glycoproteins, and salivary glycoproteins. Two of the antibodies (HT29-36 and CB) reacted with all A variant structures tested and have a broad anti-A reactivity. Ab CLH6 did not agglutinate A erythrocytes and reacted preferentially with the type 1A structure. Ab S12 agglutinated all A1 erythrocytes and reacted best with simple, monofucosyl type 2 A structures, such as Aa-2, Ab-2, and A tetrasaccharide. Ab M2 has a novel, but complex, spectrum of reactivity. It reacts with type 3 and type 4 A chains and not with type 1 and type 2 A chains. It appears to recognize both an external A structure (formula; see text) (I) (found) in type 3 and type 4 chains) and also an internal structure (II) found in type 3 chains. Ab M2 agglutinates all A and AB erythrocytes but does not react with salivary glycoproteins.

Seven oligosaccharides isolated from human milk were tested for their effect in an in-vitro model of mouse blastocyst adhesion and trophoblast outgrowth on endometrial epithelial monolayers. One compound, lacto-N-fucopentaose I (LNF I), produced a significant reduction in the percentage of attached and outgrown blastocysts after co-culture for 72 h (P less than 0.001). No significant effect of any other tested oligosaccharide was obtained.

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In an attempt to provide an explanation for the previously reported effect of pregnancy on the Lewis phenotype of erythrocytes, the level of Leb-active glycolipid in serum was compared with the reactions of erythrocytes, using samples obtained from 73 nonpregnant women, 74 women at the time of delivery, and 2 women at weekly intervals during their pregnancy. In this Swedish population, the frequency of the Le(a--b-) blood group increased from 11% in nonpregnant women to 36% in women at the time of delivery. Among Le(a--b+) women of all ABO groups, those who were A1 most often became (Leb-) during pregnancy. The change in phenotype occurred as early as the 24th week of gestation; the Leb antigen was again detectable within 6 weeks after delivery. The concentration of Leb glycolipid in serum, as measured by radioimmunoassay, decreased only slightly during pregnancy. The repartition of glycolipids, secondary to the increased ratio of lipoprotein to red cell mass that occurs during pregnancy, may account for the relative lack of Lewis glycolipid on erythrocytes.

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