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The ability of clostridium novyi-NT spores to induce apoptosis via the mitochondrial pathway in mice with HPV-positive cervical cancer tumors derived from the TC-1 cell line.
BMC Complement Med Ther
December 2024
Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
Background: A precise observation is that the cervix's solid tumors possess hypoxic regions where the oxygen concentration drops below 1.5%. Hypoxia negatively impacts the host's immune system and significantly diminishes the effectiveness of several treatments, including radiotherapy and chemotherapy.
View Article and Find Full Text PDFTacrolimus-induced thrombotic microangiopathy (TMA) after heart and lung transplantation successfully treated with eculizumab.
Transpl Immunol
December 2024
Pulmonary, Critical Care and Cardiothoracic Surgery, Northwell Health Systems, 300 Community Dr, Manhasset, NY 11030, United States of America.
Introduction: Tacrolimus-induced thrombotic microangiopathy (TMA) causing acute kidney injury (AKI) without systemic features is a rare entity, particularly after non-renal solid organ transplantation.
Case Report: We describe the case of a patient with AKI after combined heart and lung transplantation. Renal biopsy revealed acute thrombotic microangiopathy which ultimately prompted initiation of eculizumab, a monoclonal antibody targeted against complement C5, with subsequent recovery in renal function.
Shedding light on the role of complement C4 activation in cancer.
Hum Immunol
December 2024
Department of Pharmaceutical and Biomedical Sciences College of Pharmacy, California Northstate University, 9700 West Taron Drive, Elk Grove, CA 95757, USA. Electronic address:
Complement C4 is a key component in the activation of classical and lectin complement pathways, which are observed in both animal tumor models and cancer patients. While its role in autoimmune disorders has been extensively studied, the functions of complement C4 and its activation in cancer have received inadequate consideration. Recent studies have detected C4 activation in animal tumor models and cancer patients, with its fragment C4d found in cancer tissues and lymph nodes.
View Article and Find Full Text PDFiPSC-derived retinal pigment epithelium: an in vitro platform to reproduce key cellular phenotypes and pathophysiology of retinal degenerative diseases.
Stem Cells Transl Med
December 2024
NEI/OSCTRS/OGVFB, Bethesda, MD, United States.
Retinal pigment epithelium (RPE) atrophy is a significant cause of human blindness worldwide, occurring in polygenic diseases such as age-related macular degeneration (AMD) and monogenic diseases such as Stargardt diseases (STGD1) and late-onset retinal degeneration (L-ORD). The patient-induced pluripotent stem cells (iPSCs)-derived RPE (iRPE) model exhibits many advantages in understanding the cellular basis of pathological mechanisms of RPE atrophy. The iRPE model is based on iPSC-derived functionally mature and polarized RPE cells that reproduce several features of native RPE cells, such as phagocytosis of photoreceptor outer segments (POS) and replenishment of visual pigment.
View Article and Find Full Text PDFSome Human Anti-Glycan Antibodies Lack the Ability to Activate the Complement System.
Antibodies (Basel)
December 2024
Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry Russian Academy of Science, 117991 Moscow, Russia.
Naturally occurring human antibodies against glycans recognize and quickly eliminate infectious bacteria, viruses and aberrantly glycosylated neoplastic malignant cells, and they often initiate processes that involve the complement system. Using a printed glycan array (PGA) containing 605 glycoligands (oligo- and polysaccharides, glycopeptides), we examined which of the glycan-binding antibodies are able to activate the complement system. Using this PGA, the specificities of antibodies of the IgM and IgG classes were determined in the blood serum of healthy donors (suggested as mostly natural), and, then, using the same array, it was determined which types of the bound immunoglobulins were also showing C3 deposition.
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