ABSTRACT
Described as a "don't eat me" signal, CD47 becomes a vital immune checkpoint in cancer. Its interaction with signal regulatory protein alpha (SIRPα) prevents macrophage phagocytosis. In recent years, a growing body of evidences have unveiled that CD47-based combination therapy exhibits a superior anti-cancer effect. Latest clinical trials about CD47 have adopted the regimen of collaborating with other therapies or developing CD47-directed bispecific antibodies, indicating the combination strategy as a general trend of the future. In this review, clinical and preclinical cases about the current combination strategies targeting CD47 are collected, their underlying mechanisms of action are discussed, and ideas from future perspectives are shared.
ABSTRACT
La artritis reumatoide es una enfermedad autoinmune, sistémica, crónica, que afecta con más frecuencia a mujeres que a hombres, y se observa predominantemente en ancianos. El propósito de este trabajo es presentar el resultado de una revisión bibliográfica sobre aspectos generales relacionados con la patogenia de la artritis reumatoide y el manejo terapéutico actual, así como perspectivas futuras de nuevos enfoques terapéuticos. Existen dos subtipos principales de artritis reumatoide según la presencia o ausencia de anticuerpos antiproteína citrulinada. La citrulinación es catalizada por la enzima peptidilarginina-deiminasa dependiente de calcio, que cambia una arginina cargada positivamente a una citrulina polar, pero neutra como resultado de una modificación postraduccional. Este estudio se enfoca en el subconjunto de artritis reumatoide positivo para anticuerpos antiproteína citrulinada y se divide la progresión del proceso de artritis reumatoide en varias etapas. Cabe mencionar que estas etapas pueden ocurrir de forma secuencial o simultánea. Se requiere con urgencia una mejor comprensión de cómo los mecanismos patológicos impulsan el deterioro del progreso de la artritis reumatoide en los individuos con el fin de desarrollar terapias que tratarán eficazmente a los pacientes en cada etapa del progreso de la enfermedad(AU)
Rheumatoid arthritis is a chronic systemic autoimmune disease that arises more frequently in women than in men, and is predominantly observed in the elderly. To present the result of a bibliographic review on general aspects related to the pathogenesis of rheumatoid arthritis and current therapeutic management, as well as future perspectives of new therapeutic approaches. There are two main subtypes of rheumatoid arthritis according to the presence or absence of anti-citrullinated protein antibodies. Citrullination is catalyzed by the calcium-dependent enzyme peptidylarginine deiminase, which changes a positively charged arginine to a polar but neutral citrulline as a result of post-translational modification. This work focuses on the anti-citrullinated protein antibodies -positive rheumatoid arthritis subset and divides the progression of the rheumatoid arthritis process into several stages. It should be mentioned that these stages can occur sequentially or simultaneously. A better understanding of how pathological mechanisms drive the deterioration of rheumatoid arthritis progression in individuals is urgently required in order to develop therapies that will effectively treat patients at each stage of disease progression(AU)
Subject(s)
HumansABSTRACT
Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) has revolutionized the identification of microbial species in clinical microbiology laboratories. MALDI-TOF-MS has swiftly become the new gold-standard method owing to its key advantages of simplicity and robustness. However, as with all new methods, adoption of the MALDI-TOF MS approach is still not widespread. Optimal sample preparation has not yet been achieved for several applications, and there are continuing discussions on the need for improved database quality and the inclusion of additional microbial species. New applications such as in the field of antimicrobial susceptibility testing have been proposed but not yet translated to the level of ease and reproducibility that one should expect in routine diagnostic systems. Finally, during routine identification testing, unexpected results are regularly obtained, and the best methods for transmitting these results into clinical care are still evolving. We here discuss the success of MALDI-TOF MS in clinical microbiology and highlight fields of application that are still amenable to improvement.
Subject(s)
Classification , Mass Spectrometry , MethodsABSTRACT
Allii Macrostemonis Bulbus (Xiebai in Chinese), as a famous traditional Chinese medicine, has great medicinal and dietary values since ancient times. In China, the dry bulbs of Allium macrostemon and Allium chinense are both used as its original plants. Pharmacological studies have revealed that both of them could increase plasminogen activator activity and prolong the effect of coagulation to achieve antiplatelet aggregation which validates their traditional uses for the treatment of thoracic obstruction and cardialgia in clinics. Besides, several other significant activities, including lipid-lowering, anti-atherosclerosis, antitumor, antispasmodic, antibacterial, antioxidant, and insecticidal activities, have already been reported. The volatile oils, nitrogenous compounds, and steroidal saponins are the major beneficial compounds. Among them, steroidal saponins are considered as the characteristic constituents. In this review, the current information concerning the phytochemistry and pharmacology of Allii Macrostemonis Bulbus is summarized comprehensively. In addition, several research future perspectives are presented, especially the mechanism of bioactive components and fraction from the bulbs of Allium macrostemon and Allium chinense.