A particle-enhanced immunoassay of beta 2-microglobulin in serum is described. It is based on the agglutination of complexes formed between the serum beta 2-microglobulin and latex particles coated with F(ab')2 fragments of polyclonal anti-beta 2-microglobulin antibodies. The analytical range of the method is 0.50 to 16 mg/l; it can be extended by appropriate dilution to 0.12 to 80 mg/l with good precision (CV less than 5% over the whole range). The accuracy and the precision are confirmed by a good correlation with radioimmunoassay (n = 123, r = 0.993). No error due to antigen excess was observed, even up to 292 mg/l. The main advantages of the method are its simplicity, its low cost per test and its high sensitivity (final dilution of the sample at 1/1200) with no known interference. The calibration curve is stable for at least 2 weeks.
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http://dx.doi.org/10.1515/cclm.1991.29.6.401 | DOI Listing |
Int J Mol Sci
December 2024
Cardiology Department, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania.
Sjögren's syndrome (SS) is a slowly progressive, chronic autoimmune inflammatory condition characterized by the affliction of the exocrine glands, with issues that derive from it markedly decreasing the quality of life of these patients. Salivary gland involvement can be identified through imaging methods. Among them, salivary gland ultrasonography (SGUS) is used as a diagnostic and prognostic tool in pSS.
View Article and Find Full Text PDFNeuroreport
January 2025
Department of Neurology, the Second Affiliated Hospital of Guizhou Medical University, Kaili, Guizhou Province, China.
Nefrologia (Engl Ed)
January 2025
Nephrology Service, University Hospital Reina Sofia, Cordoba-Spain; Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Cordoba, Spain University of Cordoba, Cordoba, Spain; Redes de Investigación Cooperativa Orientadas a Resultados en Salud, RICORS2040, Institute of Health Carlos III, Madrid, Spain; European Uremic Toxins Group (EUTOx). Electronic address:
Biomark Res
January 2025
Department of Hematology, The First Affiliated Hospital of Xiamen University and Institute of Hematology, School of Medicine, Xiamen University, Xiamen, 361003, P.R. China.
Background: Disease progression within 24 months (POD24) significantly impacts overall survival (OS) in patients with follicular lymphoma (FL). This study aimed to develop a robust predictive model, FLIPI-C, using a machine learning approach to identify FL patients at high risk of POD24.
Methods: A cohort of 1,938 FL patients (FL1-3a) from seventeen centers nationwide in China was randomly divided into training and internal validation sets (2:1 ratio).
Alzheimers Res Ther
January 2025
Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, 400016, China.
Background: Cerebrospinal fluid (CSF) β2-microglobulin (β2M) has been demonstrated as an important factor in β-amyloid (Aβ) neurotoxicity and a potential target for Alzheimer's disease (AD). However, more investigation is required to ascertain the relationship between β2M and glial activities in AD pathogenesis.
Methods: In this study, 211 participants from the Alzheimer's disease Neuroimaging Initiative (ADNI) with CSF and Plasma β2M, CSF glial fibrillary acidic protein (GFAP), soluble triggering receptor expressed on myeloid cells 2 (sTREM2), Aβ, phosphorylated-tau (P-tau) and total tau (T-tau) were divided into four groups, stage 0, 1, 2, and suspected non-AD pathology (SNAP) based on the National Institute on Aging- Alzheimer's Association (NIA-AA) criteria.
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