Antibodies directed against the adherence-mediating protein of Mycoplasma pneumoniae were measured by an adherence inhibition assay. Pretreatment with antibody-containing sera reduced the attachment of sheep erythrocytes to Mycoplasma pneumoniae layers grown in flat-bottom microtiter plates. The degree of attachment of erythrocytes was estimated by lysis with distilled water and measurement of absorbance in a microtiter reader. Sera tested included 126 sera from patients with suspected Mycoplasma pneumoniae respiratory infection and 60 sera from patients with serologically confirmed respiratory infection of other origin. Examination of human sera by both complement fixation using glycolipid as antigen, and the adherence inhibition assay indicated a high degree of specificity of the latter. Furthermore, titer increases parallel to complement fixation titers were found in six paired sera, and testing of separated IgM showed high reactivity in this immunoglobulin fraction. The adherence inhibition assay is a reproducible method which is relatively easy to perform. It may be of importance especially when a non-specific complement fixation reaction due to cross-reaction is suspected.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/BF02013574 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Feasibility and effects of cognitive training on cognition and psychosocial function in Huntington's disease: a randomised pilot trial.
J Neurol
January 2025
Turner Institute for Brain and Mental Health, School of Psychological Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash University, 18 Innovation Walk, Clayton, Victoria, 3800, Australia.
Background: Huntington's disease (HD) is a rare neurodegenerative disease that causes progressive cognitive, physical, and psychiatric symptoms. Computerised cognitive training (CCT) is a novel intervention that aims to improve and maintain cognitive functions through repeated practice. The effects of CCT have yet to be established in HD.
View Article and Find Full Text PDFHarnessing cell aggregates for enhanced adeno-associated virus manufacturing: Cultivation strategies and scale-up considerations.
Biotechnol Prog
January 2025
AdBIOPRO, VINNOVA Competence Centre for Advanced Bioproduction by Continuous Processing, Royal Institute of Technology (KTH), Stockholm, Sweden.
The possibility to produce recombinant adeno-associated virus (rAAV) by adherent HEK293T cells was studied in a stirred tank bioreactor (STR) culture of cell aggregates. A proof-of-concept of rAAV production was successfully demonstrated in a process where single cells were first expanded, then cell aggregates were formed by dilution into a different medium 1 day before triple plasmid transfection was conducted. An alternative approach for the STR inoculation using a seed taken from a high cell density perfusion (HCDP) culture was also investigated.
View Article and Find Full Text PDFAn update on promising and emerging protein kinase B/AKT inhibitors for breast cancer.
Expert Opin Pharmacother
January 2025
Division of New Drugs and Early Drug Development for Innovative Therapies, European Institute of Oncology, IRCCS, Milan, Italy.
Introduction: . The PI3K pathway is crucial in breast cancer (BC), influencing cell survival, growth, and metabolism, with AKT playing a central role in treatment resistance. This pathway's involvement in breast carcinogenesis and its link to treatment resistance underscores the significance of targeting it in BC therapy.
View Article and Find Full Text PDFEffects of exercise training on nigrostriatal neuroprotection in Parkinson's disease: a systematic review.
Front Neurosci
January 2025
Department of Physical Therapy, China Medical University, Taichung, Taiwan.
Introduction: Parkinson's disease (PD) is characterized by progressive neurodegeneration within the nigrostriatum, leading to motor dysfunction. This systematic review aimed to summarize the effects of various exercise training regimens on protein or gene expression within the nigrostriatum and their role in neuroprotection and motor function improvement in animal models of Parkinson's disease (PD).
Methods: PubMed, EMBASE, and Web of Science were searched up to June 2024 and included sixteen studies that adhere to PRISMA guidelines and CAMARADES checklist scores ranging from 4 to 6 out of 10.
Oxyberberine alleviates lipopolysaccharide-induced intestinal barrier disruption and inflammation in human colonic Caco-2 cells .
Front Pharmacol
January 2025
Department of Pharmaceutical Sciences, Zunyi Medical University, Zhuhai, China.
Background: Oxyberberine (OBB) is a naturally occurring isoquinoline alkaloid that is believed to possess various health-promoting properties, including anti-fungus, hepatoprotection, anti-inflammation, and anti-intestinal mucositis effects. Despite several studies reporting the health benefits of OBB in treating ulcerative colitis (UC), its specific mechanism of action has yet to be fully elucidated.
Purpose: This investigation is designed to explore the potential protective efficacy of OBB and the latent mechanism using an model of UC-like inflammatory intestinal cells.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!