Ceftriaxone sodium hydrate (2:4:7)

A highly sensitive and specific fluorimetric method was developed for the determination of cefazolin sodium I, cefoperazone sodium II, ceftriaxone sodium III, and cefixime IV. The proposed method involves the formation of ternary complex with Tb(3+) in the presence of Tris buffer. The quenching of the terbium fluorescence due to the complex formation was quantitative for the four studied drugs. The effect of pH, concentration of Tris buffer and terbium were studied. The formation of the complex was highly dependent on the pH. The optimum pH was found to be pH 8 for cefazolin sodium I, ceftriaxone sodium III, cefixime IV and pH 10 for cefoperazone sodium II. The optimum concentration for Tb(3+) was found 1 ml of 10(-4) M solution and for Tris buffer 1 ml of the prepared solution. Under the described conditions, the proposed method was applicable over the concentration range 8.79 x 10(-6)-7.91 x 10(-5), 9.7 x 10(-6)-4.49 x 10(-)5, 6.10 x 10(-6)-2.50 x 10(-5), and 4.92 x 10(-6)-2.95 x 10(-5) mol with mean percentage accuracy of 99.79+/-0.24, 98.97+/-1.25, 100.05+/-0.79, and 100.15+/-0.54 for I, II, III, and IV, respectively. The proposed method was applied successfully for the determination of studied drugs in bulk powder and in pharmaceutical formulations.

OBJECTIVE: ;To document the incidence and clinical features of syphilitic uveitis in patients coinfected with human immunodeficiency virus (HIV).;DESIGN: ;Retrospective chart review.;SETTINGS: ;Single tertiary uveitis referral center.;PATIENTS: ;The charts of HIV-infected patients with uveitis and a reactive fluorescent treponemal antibody absorption test seen between November 1983 and June 1995 were reviewed.;RESULTS: ;Syphilis was the most common bacterial cause of uveitis in this group. Thirteen patients (0.6% of the 2085 HIV-positive patients seen in the clinic during the study period) were dually infected. Twelve patients were male. Six patients (46%) had previously been treated for syphilis, 4 with intramuscular penicillin G benzathine only. Four patients (31%) had isolated anterior uveitis, 3 patients (23%) had anterior and intermediate uveitis, and 5 patients (38%) had panuveitis. One patient (8%) presented with optic nerve and retinal atrophy. Eight patients were treated with intravenous penicillin, 3 with intravenous and intramuscular penicillin, and 1 with intravenous ceftriaxone sodium. Of the 12 patients for whom follow-up examinations were available after treatment, ocular inflammation decreased in 11 (92%) and visual acuity improved in 8 (67%).

HYPOTHESIS: ;The addition of molgramostim (recombinant human granulocyte-macrophage colony-stimulating factor) to antibiotic therapy for nontraumatic and generalized abdominal sepsis is effective and has a significant impact on length of hospitalization, direct medical costs, and mortality.;DESIGN: ;Randomized, double-blind, placebo-controlled clinical trial.;SETTING: ;Tertiary referral center.;PATIENTS: ;Fifty-eight patients with abdominal sepsis.;INTERVENTIONS: ;Patients were allocated to receive, in addition to ceftriaxone sodium, amikacin sulfate, and metronidazole, molgramostim in a daily dosage of 3 microg/kg for 4 days (group 1) or placebo (group 2). Antibiotics were administered for at least 5 days and discontinued after clinical improvement had occurred and white blood cell count had been normal for 48 hours.;MAIN OUTCOME MEASURES: ;Time to improvement, duration of antibiotic therapy, hospital stay, complications, mortality, and adverse reactions to drugs.;RESULTS: ;Median time to improvement was 2 days in group 1 and 4 days in group 2 (P<.005). Median length of hospitalization was 9 and 13 days, respectively (P<.001), and median duration of antibiotic therapy was 9 and 13 days, respectively (P<.