Peripheral blood mononuclear cells (PBMCs) are a critical component of the immune system and the target cells for human immunodeficiency virus, type 1 (HIV-1) infection. Nucleoside/nucleotide analogs for the treatment of HIV infection are prodrugs that require cellular activation to triphosphate (TP) metabolites for antiviral activity. A reliable method of PBMC isolation and subsequent cell counting, as well as an accurate bioanalytical determination of the TPs in PBMCs are important for understanding the intracellular pharmacokinetic (PK) of the TPs and its correlation with plasma PK, the drug effect, and dose determination. Areas covered: The authors review the challenges and solutions in PBMC sample collection, sample processing, cell lysis, cell counting methods, analyte extraction, and liquid chromatography/tandem mass spectrometry (LC-MS/MS) quantitative analysis of the nucleoside reverse transcriptase inhibitor-triphosphate (NRTI-TP) metabolites, and analogs. Expert opinion: Analyzing large numbers of clinical PBMC samples for determination of NRTI-TPs and analogs in PBMCs requires not only a validated LC-MS/MS bioanalytical method but also reliable methods for PBMC isolation, counting, cell lysis, and analyte recovery, and an approach for assessing analyte stability. Furthermore, a simple, consistent, and validated cell counting method often involves DNA quantitation of the PBMCs samples collected from clinical studies.
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http://dx.doi.org/10.1080/17425255.2018.1500552 | DOI Listing |
Front Cell Infect Microbiol
December 2024
Department of Infectious Diseases, the Second Xiangya Hospital, Central South University, Changsha, Hunan, China.
Objective: The aim of this study was to assess the clinical value of metagenomic next-generation sequencing (mNGS) of blood samples for the identification of disseminated tuberculosis (DTB).
Methods: A total of 48 individuals suspected of DTB were enrolled. All patients underwent mNGS of peripheral blood and conventional microbiological tests.
Front Surg
December 2024
Department of Thoracic Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China.
Objective: Lung cancer is the leading cause of cancer-related mortality. Lymph node involvement remains a crucial prognostic factor in non-small cell lung cancer (NSCLC), and the TNM system is the current standard for staging. However, it mainly considers the anatomical location of lymph nodes, neglecting the significance of node count.
View Article and Find Full Text PDFCureus
November 2024
Department of Nephrology, Nagasaki University Hospital, Nagasaki, JPN.
A 46-year-old woman on peritoneal dialysis (PD) had cloudy peritoneal dialysis effluent that had persisted for 10 days by the time she visited our hospital. The white blood cell count in the effluent was elevated to 1500/μL, leading to a diagnosis of peritoneal dialysis-associated peritonitis. The effluent cleared within two days with treatment using cefazolin and ceftazidime, and the white blood cell count dropped to 0/μL by day 6.
View Article and Find Full Text PDFFront Pediatr
December 2024
Department of Hematology and Oncology, Dalian Women and Children's Medical Group, Dalian, China.
Leukapheresis is a treatment used to reduce leukocytes to decrease the number of white blood cells in circulation and prevent the risks of hyperviscosity and cerebrovascular and pulmonary leukostasis. We present a case of pro-B-cell acute lymphoblastic leukemia (ALL) with hyperleukocytosis in a 6-month-old infant, characterized by a positive KMT2A/AFF1 fusion gene with a leukocyte count of 1,755 × 10/L. After two consecutive sessions of leukapheresis, the white blood cell count decreased to 55 × 10/L.
View Article and Find Full Text PDFFront Endocrinol (Lausanne)
December 2024
Division of Endocrinology, Mayo Clinic, Jacksonville, FL, United States.
Introduction: BRAFV600E mutation (BRAF) is common in papillary thyroid cancer (PTC), and most patients have an excellent outcome. However, a TERT-promoter mutation (pTERT) in the presence of BRAF (BRAFpTERT) has been demonstrated to confer a more aggressive behavior to PTC. Lymphocytic infiltration is often present in PTC.
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