These lab-based findings have also been supported by the observation that increased PI3K/AKT signalling occurs in some early (4 25 days) on-therapy specimens from patients treated with a BRAF inhibitor (Shi et al, 2014).
Of the 19 patients who tested positive for B. pertussis, 13 (68.4%) had already undergone macrolide antibiotic therapy when specimens were collected, 4 (21.0%) had specimens collected after antibiotic therapy, and 2 (10.5%) received no antibiotic therapy.
To analyse the potential antilymphangiogenic effect of mitomycin C therapy, tumour specimens of patients who received mitomycin C treatment and had excisions later on during their clinical course (because of new suspect lesions) were compared with the specimens obtained before mitomycin C treatment.
Unfortunately, we were able to analyze B. pertussis strains in only two infants because cultures were negative in 16 infants with PCR confirmed pertussis who were already receiving specific antibiotic therapy when specimens were collected, or because technical problems arose during sample collection.
Serum samples were obtained before therapy (baseline specimen; c0) and before each chemotherapy cycle (c1 cn).
Starting out as healthy human cells they gradually undergo phenotypical changes through accumulating genomic alterations first transforming into malignant and finally into metastatic and/or therapy-resistant specimens.
Using an arbitrary grading system, the level of F-AT was assessed in pairs of sera from 29 ovarian cancer patients undergoing therapy; one specimen collected just after the start of therapy and the other on a later occasion.
If a patient received more than six cycles of mapatumumab therapy, a specimen was collected at the time of disease assessment in every third treatment cycle (i.e., cycles 9, 12, etc).. Blood samples were centrifuged at 1.500 g for 10 min immediately after collection, and plasma was stored frozen at −70°C until assayed.
After 4 weeks of therapy, 3 sputum specimens were negative for acid-fast bacilli, but a bacterial culture was still positive; mycobacteria indicator growth tube culture was negative after 5 weeks.
Before the child received antimicrobial therapy, a fecal specimen was submitted to the Department of Microbiology at JIPMER.
