Search for dissertations about: "phagocytosis"

Showing result 1 - 5 of 202 swedish dissertations containing the word phagocytosis.

2. 1. Resistance to phagocytosis in Streptococcus pyogenes

   Author : Fredric Carlsson; Avdelningen för medicinsk mikrobiologi; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Infektioner; Infections; Medicine human and vertebrates ; Medicin människa och djur ; phagocytosis; innate immunity; complement; Streptococcus pyogenes; M protein;

   Abstract : Phagocytosis of Streptococcus pyogenes is complement dependent. However, the cell wall-associated M protein, which exists in >100 different serotypes (M types), enables the bacteria to evade phagocytosis. READ MORE

4. 2. Mechanisms of phagocytosis resistance in Streptococcus pyogenes

   Author : Heike Kotarsky; Lund Pediatrik; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Microbiology; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi; fibrinogen; FHL-1; Factor H; M protein; Streptococcus pyogenes; phagocytosis;

   Abstract : A distinguishing feature of Streptococcus pyogenes (GAS) is their ability to resist phagocytosis in whole human blood in the absence of type-specific antibodies, a property that is dependent on the expression of the surface associated M proteins. A common characteristic of M proteins is their interaction with a variety of host proteins including the complement regulatory protein factor H (FH) and fibrinogen that plays a key role in coagulation. READ MORE

5. 3. Mechanisms involved in macrophage phagocytosis of apoptotic cells

   Author : Anna Nilsson; Per-Arne Oldenborg; Karl-Eric Magnusson; Umeå universitet; []
   Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; macrophages; dendritic cells; phagocytosis; apoptotic cells; senescent erythrocytes; CD47; SIRPalpha; LRP1; calreticulin; Immunology; Immunologi; immunologi; Immunology;

   Abstract : Efficient removal of apoptotic cells is critical for development, tissue remodelling, maintenance of homeostasis, and response to injury. Phagocytosis of apoptotic cells is mediated by many phagocytic receptors, soluble bridging molecules, and pro-phagocytic ligands on the surface of apoptotic cells. READ MORE

6. 4. Phagocytosis by neutrophils - studies on phagosome dynamics and membrane traffic modulation by Streptococcus pyogenes

   Author : Pontus Nordenfelt; Infektionsmedicin; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; fluorescence microscopy; membrane traffic; neutrophil; Streptococcus pyogenes; phagosome; phagocytosis;

   Abstract : Neutrophils are our most numerous and deadly white blood cells and without them we would succumb quickly to infections by pathogens. The main mechanism that the neutrophils employ for our protection is phagocytosis, where they eat and enclose their target inside a membrane-bound organelle, the phagosome. READ MORE

7. 5. Glucose and insulin modulate phagocytosis and production of reactive oxygen metabolites in human neutrophil granulocytes

   Author : Daniel Saiepour; Per-Arne Oldenborg; Janove Sehlin; Olle Stendahl; Umeå universitet; []
   Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; neutrophil granulocytes; glucose; insulin; protein kinase C; diacylglycerol; phagocytosis; respiratory burst; diabetes; Histology; Histologi;

   Abstract : Neutrophil granulocytes play an important role in the host defence against invading microorganisms and constitute the frontline of defence within the innate immune system and are among the first cells to arrive at the site of inflammation. Effective phagocytosis and killing of invading pathogens by neutrophils is of significant importance for successful resistance to infectious diseases. READ MORE