Study Objective: To characterize and compare the pharmacokinetics of levofloxacin in men and women after systemic administration.
Design: Prospective, open-label, parallel group pharmacokinetic study.
Setting: University research center.
Subjects: Eleven healthy men and nine healthy women stratified by body mass index.
Intervention: Subjects received levofloxacin as a single 500-mg intravenous dose. Serum and urine were collected over 36 hours.
Measurements And Main Results: Levofloxacin concentrations were determined by high-performance liquid chromatography with ultraviolet detection. Pharmacokinetic analysis was performed with ADAPT II software (University of Southern California, Los Angeles, CA). Median (range) body mass index was 23.2 kg/m2 (19.9-28.3 kg/m2) for men and 23.6 kg/m2 (16.0-32.4 kg/m2) for women (p = 0.67). A two-compartment model best fit the pharmacokinetic data: median (range) R2 was 0.996 (0.990-0.999). Women had a 24% greater exposure to levofloxacin, with a significantly smaller steady-state volume of distribution (p < 0.01) and a slower clearance (p < 0.01).
Conclusions: Differences exist in the disposition of levofloxacin between healthy men and women after systemic administration. Fixed intravenous doses of levofloxacin will lead to greater drug exposure in women. Thus, women may have more of an increased risk of fluoroquinolone toxicity than men, and men may need higher doses to achieve similar drug efficacy than women. Levofloxacin dosage adjustments based on sex should be considered on an individual basis.
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http://dx.doi.org/10.1592/phco.2005.25.10.1310 | DOI Listing |
J Gambl Stud
December 2024
Department of Geography, Faculty of Science, Palacký University Olomouc, Olomouc, Czech Republic.
Gambling encompasses a wide variety of activities, and the structural characteristics of each form contribute to its potential risk. However, the literature does not fully agree on the risk levels of certain gambling forms. In this study, we classify less risky gambling forms (soft forms) based on public perceptions of their riskiness.
View Article and Find Full Text PDFAnn Med
December 2025
Department of Ultrasonographl, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Third Hospital of Shanxi Medical University, Tongji Shanxi Hospital, Taiyuan, Shanxi Province, China.
Objective: To explore the differences of conventional ultrasound characteristics, elastic imaging parameters and clinicopathological characteristics of distinct molecular subtypes of breast cancer in young women, and to identify imaging parameters that exhibited significant associations with each molecular subtype.
Methods: We performed a retrospective analysis encompassing 310 young women with breast cancer. Observations were made regarding the ultrasonography and elastography characteristics of the identified breast lesions.
J Int Med Res
December 2024
Department of Rheumatology and Rehabilitation, RinggoldID:63527 Cairo University, Cairo, Egypt.
Objectives: To compare the value of musculoskeletal ultrasound (MSUS) with conventional radiography in the detection of patients with early rheumatoid arthritis (RA) and to correlate the sonographic findings with disease activity, and functional disability scores.
Methods: Patients >18 years of age with RA ≤2 years who satisfied the 2010 EULAR/ACR classification criteria for rheumatoid arthritis and disease activity score 28 (DAS28) >2.6, were enrolled.
Zh Nevrol Psikhiatr Im S S Korsakova
December 2024
Clinical Hospital of St. Luka, St. Petersburg, Russia.
Objective: To analyze the efficacy and tolerability of aceclofenac in the treatment of patients with acute non-specific musculoskeletal pain in the lower back (ANBP) compared with other NSAIDs (dexketoprofen, nimesulide and lornoxicam), as well as to assess the impact of NSAIDs therapy on the relative risk of recurrence and chronicity of this pathology.
Material And Methods: The study involved 80 patients (47 women and 33 men), average age 52.6 [47.
Zh Nevrol Psikhiatr Im S S Korsakova
December 2024
Yaroslavl State Medical University, Yaroslavl, Russia.
Objective: To analyze the subjective sleep assessment in patients with neuromyelitis optica spectrum diseases (NMOSD) according to the current disease criteria of 2015.
Material And Methods: Twenty patients (17 women and 3 men), median age 44.5 years [Q:Q=27.
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