Search

The effect of magnesium lithospermate B on the renal responses of rats with renal failure was investigated in the presence and absence of pretreatment with the kallikrein inhibitor, aprotinin. Magnesium lithospermate B caused a marked increase in the levels of the renal functional parameters (glomerular filtration rate, renal plasma flow and renal blood flow), accompanied by significant increases in urinary prostaglandin excretion (increases of prostaglandin E2 and 6-keto-prostaglandin F1 alpha excretion by 82% and 36%, respectively). The urinary excretion of kallikrein was also increased following magnesium lithospermate B administration. However, pretreatment with aprotinin abolished the renal function-facilitating action of magnesium lithospermate B concomitantly with a markedly increased urinary excretion of prostaglandin E2, 6-keto-prostaglandin F1 alpha and kallikrein. These results suggest that the kallikrein-kinin-prostaglandin B.

Urinary excretion of prostaglandin E2 showed a significant increase following administration of magnesium lithospermate B [1] in rats with renal failure. In contrast, that of thromboxane B2 showed a significant decrease, indicating the improvement of renal failure.

The purpose of this study was to test the bond strength of a Co-Cr alloy. 40 cylindrical specimens (4 mm in diameter) were made of non-surgical Vitallium, and tensile bond strength was measured after etching and bonding. Etching was done with Oxy-Etch, and etching conditions were as follows: Composition of etching solution: Cone. nitric acid; 1 part glacial acetic acid; 1 part distilled water; 2 parts Current: 300 ma/cm2 Etching time: 3 min. The results were as follows: 1. Tensile bond strength was 435 +/- 116 kg/cm2 2. The result of this study shows that this etching method could be clinically applicable.

This study was conducted to evaluate the efficacy and safety of intravenous sulbactam/ampicillin followed by oral sultamicillin. Parenteral sulbactam/ampicillin was administered for 7 to 14 days to 152 in-patients with moderate to severe infections. All patients were treated with sulbactam/ampicillin, but only 140 patients received oral sultamicillin therapy. Eighty-nine men and 63 women participated in this study. Infections included intraabdominal (42 cases), respiratory tract (52 cases), skin and soft tissue (29 cases), urinary tract (16 cases), and miscellaneous infections (14 cases) that included typhoid fever, gastroenteritis, septicemia, and surgical wound infection. Six (4%) patients reported six study drug-related adverse experiences. Gastrointestinal side effects were most common and included epigastric burning and indigestion. Diarrhea was not reported and no patient discontinued drug therapy because of an adverse event. Laboratory abnormalities were infrequent and clinically insignificant. Overall, 98% of the 114 evaluable patients achieved clinical cure or improvement following treatment with sulbactam/ampicillin and sultamicillin. Cured or improved patients in each diagnostic group were 97% for intraabdominal infections, 100% for respiratory tract infections, 100% for skin and soft tissue infections, 100% for urinary tract infection, and 91% for other types of infections. Only 2 (2%) patients were judged to be treatment failures. Microbiologic efficacy, or eradication, was 86% overall, ranging from 75 to 100%. Persistence of pathogens occurred in 5%, and eradication with development of a superinfection occurred in 4%. Fifty-seven percent (30/50) of the isolates tested were resistant to ampicillin alone whereas only 21% (9/42) were resistant to sulbactam/ampicillin (p = 0.002).(ABSTRACT TRUNCATED AT 250 WORDS)

An attempt was made to isolate the active component which exhibits an improving effect on renal function from Salviae Miltiorrhazae Radix (Chinese crude drug). Systematic isolation from aqueous extract of Salviae Miltiorrhizae Radix was carried out, and Compound 1 was found to be more effective than any of the other constituents in improving renal functional parameters; that is, a marked reduction of glomerular filtration rate following adenine ingestion was improved by administration of this substance. The renal plasma flow and renal blood flow were also increased in renal failure rats. On the basis of chemical and spectroscopic data, Compound 1 was shown to be identical with magnesium lithospermate B.

The glomerular filtration rate (GFR), renal plasma flow (RPF) and renal blood flow (RBF) were all markedly decreased in rats given an adenine diet as the period of adenine administration lengthened. Concurrently, the urinary excretions of prostaglandin E2 (PGE2) and 6-keto-prostaglandin F1 alpha(6-keto-PGF1 alpha) decreased gradually in parallel with the renal function parameters, whereas the urinary excretion of thromboxane B2 (TXB2) increased markedly. These findings suggest the involvement of prostaglandin in the renal circulation.

The involvement of prostanoids in the improvement of adenine-induced renal failure in rats by magnesium lithospermate B was studied. After intraperitoneal administration of magnesium lithospermate B to renal failure rats, the levels of glomerular filtration rate, renal plasma flow and renal blood flow were increased. Urinary excretions of prostaglandin E2 (PGE2) and 6-keto-prostaglandin F1 alpha (6-keto-PGF1 alpha) in renal failure rats were increased by the administration of magnesium lithospermate B, while that of thromboxane B2 had no effect. Pretreatment with indomethacin abolished the improving effect of magnesium lithospermate B on renal function concomitantly with markedly suppressed urinary excretion of prostanoids. These results suggest that the increased formation of PGE2 and 6-keto-PGF1 alpha might contribute to the improvement of adenine-induced renal failure in rats by magnesium lithospermate B.

The effect of magnesium lithospermate B isolated from Salviae miltiorrhizae Radix on excretion of urinary arachidonate metabolites was examined in both normal rats and those given adenine. Urinary excretion of prostaglandin E2 (PGE2) and 6-keto-prostaglandin F1 alpha (6-keto-PGF1 alpha) decreased while urinary thromboxane B2 (TXB2) excretion increased markedly with the progression of renal failure. Rats administered magnesium lithospermate B showed an increase of urinary PGE2 excretion at the 6th and 12th days. Excretion of 6-keto-PGF1 alpha also showed a significant increase on the 6th and 12th days in rats with renal failure induced by the administration of adenine. However, these effects were lower than the corresponding values in normal rats. In addition, urinary PGE2 and 6-keto-PGF1 alpha excretions showed no appreciable difference in rats that exhibited progressive renal failure with continuation of the adenine administration period, as shown on the 18th and 24th days. There were no significant changes in TXB2 excretion between the control and magnesium lithospermate B-treated groups throughout the experimental period.

The safety and clinical efficacy of cefoperazone were evaluated in a multicenter trial conducted at institutions in Japan, Korea, and Taiwan. Cefoperazone was given as the sole antibiotic for 481 respiratory tract infections in 476 patients. An overall satisfactory clinical response was achieved in 73.7% of patients. Cefoperazone was effective in 78.9% of cases of pneumonia, 81.1% of acute exacerbations of chronic bronchitis, and 69.4% of bronchiectasis with infection. A satisfactory bacteriological effect was obtained in 93.2% of cases in which Haemophilus influenzae was isolated, 70.2% of Klebsiella infections, and 84.6% of infections with Streptococcus pneumoniae. Although the eradication rate was only 38.6% in patients with Pseudomonas aeruginosa, the success rate increases to 59.1% if patients showing a decrease in the number of organisms are included. Cefoperazone was effective in 63.5% of the 148 cases that had failed to respond to treatment with other antibiotics. Adverse reactions occurred in 8.0% of patients and consisted primarily of rash, diarrhea, and fever. Cefoperazone appears to be an extremely useful injectable antibiotic for the treatment of respiratory tract infections in hospitalized patients.

Staphylococcus aureus and Staphylococcus epidermidis strains isolated at eight large medical centers in Korea were examined for methicillin resistance and resistance to eight other antibiotics; cefazolin, cefamandole, cefuroxime, cefoxitin, cefotaxime, moxalactam, penicillin G and vancomycin. Methicillin resistance was found in 296 of 1225 strains (24.2%) of S. aureus and 126 of 348 strains (36.2%) of S. epidermidis. Methicillinresistant strains were isolated from all sources with the frequency of isolation ranging from 11% to 60%. From pleural effusion, throat swab and blood, methicillin-resistant strains of S. aureus were more frequently isolated with statistical significance (Chi-squared test, 95% confidence). Almost all of Methicillin-resistant S. aureus (MRSA) and S. epidermidis (MRSE) strains were multiply resistant to one or more tested eight antibiotics. However only 7(2.4%) of 296 MRSA strains and 2(1.6%) of 126 MRSE strains were resistant to vancomycin. Vancomycin was the most effective antibiotic against staphylococcal isolates as well as MRSA and MRSE.