Purpose Of Review: With global demographic changes and an overall improved healthcare, more older end-stage renal disease (ESRD) patients receive kidney transplants. At the same time, organs from older donors are utilized more frequently. Those developments have and will continue to impact allocation, immunosuppression and efforts improving organ quality.
Recent Findings: Findings mainly outside the field of transplantation have provided insights into mechanisms that drive immunosenescence and immunogenicity, thus providing a rationale for an age-adapted immunosuppression and relevant clinical trials in the elderly. With fewer rejections in the elderly, alloimmune responses appear to be characterized by a decline in effectiveness and an augmented unspecific immune response.
Summary: Immunosenescence displays broad and ambivalent effects in elderly transplant recipients. Those changes appear to compensate a decline in allospecific effectiveness by a shift towards an augmented unspecific immune response. Immunosuppression needs to target those age-specific changes to optimize outcomes in elderly transplant recipients.
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http://dx.doi.org/10.1097/MOT.0000000000000210 | DOI Listing |
World J Microbiol Biotechnol
June 2024
Instituto de Geografía Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Investigación Científica, Ciudad Universitaria, C.U., Ciudad de México, CDMX, 04510, México.
Due to the rapid expansion of industrial activity, soil pollution has intensified. Plants growing in these polluted areas have developed a rhizobiome uniquely and specially adapted to thrive in such environments. However, it remains uncertain whether pollution acts as a sufficiently selective force to shape the rhizobiome, and whether these adaptations endure over time, potentially aiding in long-term phytoremediation.
View Article and Find Full Text PDFActa Dermatovenerol Croat
November 2023
Professor Asja Prohić, MD, PhD, Department of Dermatovenerology, Sarajevo Medical School, University Sarajevo School of Science and Technology, Sarajevo, Bosnia and Herzegovina;
Theranostics
August 2023
Department of Neurology, University of Göttingen Medical School, Göttingen, Germany.
Stroke stimulates reactive astrogliosis, aquaporin 4 (AQP4) depolarization and neuroinflammation. Preconditioned extracellular vesicles (EVs) from microglia exposed to hypoxia, in turn, reduce poststroke brain injury. Nevertheless, the underlying mechanisms of such effects are elusive, especially with regards to inflammation, AQP4 polarization, and cerebrospinal fluid (CSF) flow.
View Article and Find Full Text PDFDiagnostics (Basel)
July 2023
Institute for Radiology, Nuclear Medicine and Molecular Imaging, Heart and Diabetes Center North Rhine Westphalia, Bad Oeynhausen, University of Bochum, 32545 Bochum, Germany.
Background: Hindered by its unspecific clinical and phenotypical presentation, cardiac sarcoidosis (CS) remains a challenging diagnosis.
Objective: Utilizing cardiac magnetic resonance imaging (CMR), we acquired multi-chamber volumetrics and strain feature tracking for a support vector machine learning (SVM)-based diagnostic approach to CS.
Method: Forty-five CMR-negative (CMR(-), 56.
Transplantation
March 2024
Division of Transplant Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA.
Aging affects immunity broadly through changes caused by immunosenescence, clinically resulting in augmented susceptibility to infections, autoimmunity, and cancer. The most striking alterations associated with immunosenescence have been observed in the T-cell compartment with a significant shift toward a terminally differentiated memory phenotype taking on features of innate immune cells. At the same time, cellular senescence impairs T-cell activation, proliferation, and effector functions, compromising the effectiveness of immunity.
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