RESUMO
Objective:To explore the 18F-FDG PET/CT imaging features in endometriosis (EMS), in order to provide valuable information for accurate clinical diagnosis. Methods:The clinical and imaging data of 21 patients (age range 23-72 (44.0±11.4) years) who underwent 18F-FDG PET/CT imaging in Fudan University Shanghai Cancer Center between December 2016 and May 2021, and were pathologically confirmed to be EMS, were retrospectively collected. The symptoms and signs, carbohydrate antigen (CA)125 levels, and the characteristics of the lesions on PET/CT images were analyzed. According to the intraoperative lesion invasion score, patients were divided into group A with lesion confined to the adnexal region (the score ≤4), and group B with multiple sites invaded (the score >4). The differences in age, CA125, SUV max, SUV mean, metabolic tumor volume (MTV) and total lesion glycolysis (TLG) were analyzed by independent-sample t test or Mann-Whitney U test. Results:About 42.9%(9/21) had a history of dysmenorrhea. CA125 was elevated in 95.2%(20/21) of the patients. CA125 levels of the group A and group B were 88.4(42.0, 351.5) and 619.8(72.3, 1 420.0) kU/L, respectively, which meant the higher the CA125 and the wider the lesion involvement ( z=-2.32, P=0.041). The older the patients, the more likely the lesions were confined to the adnexal region ( t=-2.10, P=0.049). The SUV max of the two groups were 3.67±1.78 and 3.93±1.88, respectively ( t=0.33, P=0.746). The other metabolic parameters (SUV mean, MTV and TLG) of the 2 groups were not significantly different either ( t=0.79, both z=-1.16, P values: 0.446, 0.245, 0.245). About 23.8%(5/21) of patients were with SUV max greater than 5, and 4 of them had inflammation. Conclusions:EMS patients are often accompanied by abdominal pain and increased CA125. The older the age, the more prone to focal involvement of appendages. The higher the CA125 level, the wider the lesion involvement. The 18F-FDG metabolism level has nothing to do with the scope of the lesion, but when the SUV max of the lesion >5, it is often accompanied by acute inflammation, which is easy to be misdiagnosed.
RESUMO
Objective:To optimize the clinical dosage regimen of amoxicillin and clavulanate potassium extended release ( ER) tablets based on the PK/PD parameters. Methods:Totally 30 healthy subjects ( half male and half female) were randomly divided into three groups, and orally administered the ER tablets respectively under fasting condition, before the meal and after the meal, and the optimal administration time was determined by comparing the pharmacokinetic characteristics. The subjects in the three groups were ad-ministered the ER tablets respectively at low, medium and high dosage, and the optimal dosage and dosing interval were determined based on the PK/PD parameters. Results:Under fasting condition, the AUC of amoxicillin [(32.2 ±15.0) μg·h·ml-1] was sig-nificantly lower than that before the meal [(41.7 ±1.92) μg·h·ml-1] and that after the meal [(42.6 ±17.7) μg·h·ml-1]. In contrast, the AUC of clavulanate acid after the meal [(1.89 ±0.54) μg·h·ml-1] was significantly lower than that under fasting condition [(2.55 ±0.76) μg·h·ml-1] and that before the meal [(2.58 ±0.76) μg·h·ml-1] (P MIC) in 12 h was 5. 5, 7 and 10 h, and the percentage was 46%, 58% and 83%, respectively, and T> MIC in 12 h was 4. 5, 6 and 8 h, and the percentage was 38%, 50% and 67%, re-spectively when MIC was 4. 0μg·ml-1 . Conclusion:It is suggested that amoxicillin and clavulanate potassium ER tablets be taken at the start of a standard meal, 2 tablets per time, twice daily, which is sufficient to achieve T> MIC of 40% -50%.