Publications by authors named "T R Kotila"

Introduction: Identifying risk factors for venous thromboembolism (VTE) is useful in deciding thromboprophylaxis for VTE. A retrospective study had shown an association between hypertension and diabetes mellitus with VTE in our population. The objective of this study was to confirm these findings and to determine if the complete blood count and coagulation tests can also be useful parameters in stratifying VTE patients for prophylaxis.

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Diseases caused by Leishmania and Trypanosoma parasites are a major health problem in tropical countries. Because of their complex life cycle involving both vertebrate and insect hosts, and >1 billion years of evolutionarily distance, the cell biology of trypanosomatid parasites exhibits pronounced differences to animal cells. For example, the actin cytoskeleton of trypanosomatids is divergent when compared with other eukaryotes.

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Intracellular organization is largely mediated by actin turnover. Cellular actin networks continuously assemble and disassemble, while maintaining their overall appearance. This behavior, called "dynamic steady state," allows cells to sense and adapt to their environment.

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Article Synopsis
  • - The actin cytoskeleton is essential for various cellular functions like cell movement, shape change, and division, with actin filaments having different structures to support these processes
  • - Tropomyosin proteins play a crucial role in regulating the behavior of actin filaments and interacting with other proteins, but the details of how they function together have not been fully understood
  • - By using cryogenic electron microscopy, researchers discovered that two types of tropomyosin (Tpm1.6 and Tpm3.2) bind to actin filaments without changing their shape, but take different paths along the filament, explaining their distinct roles in activating myosin and preventing the breakdown of actin filaments by other proteins.
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Polymerization of actin filaments against membranes produces force for numerous cellular processes, such as migration, morphogenesis, endocytosis, phagocytosis and organelle dynamics. Consequently, aberrant actin cytoskeleton dynamics are linked to various diseases, including cancer, as well as immunological and neurological disorders. Understanding how actin filaments generate forces in cells, how force production is regulated by the interplay between actin-binding proteins and how the actin-regulatory machinery responds to mechanical load are at the heart of many cellular, developmental and pathological processes.

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