Streptococci (3): Diseases caused by Streptococcus Pyogenes "Medical microbiology"

Microstudy/Dr Ahmed Talaat قناة علمية لشرح مادة الميكروبيولوجي والمناعة لجميع طلبة الكليات العملية Medical microbiology In this video we study diseases caused by streptococcus pyogens and clinical manifestation عدوى الميكروب السبحي Group A streptococcal (streptococcus pyogen) diseases can be divided into the following categories Pyogenic diseases due to direct tissue invasion by Streptococcus pyogenes. Diseases mediated by the exotoxin. And, diseases caused the immune complexes produced after the host’s immune response to the pathogen. *Pyogenic diseases are separated into: ***Throat and skin infections. Throat infection is the commonly known strep throat. **Strep throat causes about 7 million medical visits yearly in the US. **The second set of diseases are skin infections. These can be any of the following: **Impetigo ***Cellulitis ***Erysipelas Toxin-mediated diseases are: Scarlet fever ***Toxic shock-like syndrome ***Necrotizing fasciitis *Immunogenic diseases resulting from the antibody and antigen complexes depositing in various tissues. Or the pathogen antigens mimicking our normal proteins causing our immune system to attack our tissues. Two diseases are important: ***Rheumatic Fever ***Post-streptococcal glomerulonephritis ... "GAS or streptococcus pyogenes is the most common bacterial cause of acute tonsillitis. Here is a mouth with pharyngotonsilitis, inflammation of both the pharynx and tonsils. Here is a photo of bacterial tonsillitis. Pharyngotonsillitis caused by GAS is sometimes referred to as strep throat. The majority of episodes of pharyngitis are caused by viral infections which are usually treated conservatively. However, early recognition of s.pyogenes is important since failure to appropriately treat strep throat may lead to GAS complications. Unfortunately, distinguishing between viral and bacteria can be difficult. The group a streptococcus are beta haemolytic cocci able to produce some exotoxins and also contain many surface antigens that play a vital role in its pathophysiology such as m proteins Link all lectures of Streptococci Streptococci “Systematic Bacteriology    • Streptococci (1): General characters and c...   Virulence factors of streptococcus pyogen “Systematic Bacteriology    • Streptococci (2): Virulence factors of Str...   Virulence factors of Staphylococcus aureus “Systematic Bacteriology    • Staphylococci (3):  Virulence factors of S...   Acute Rheumatic Fever (ARF)-Post streptococcal disease “Systematic Bacteriology    • Streptococci (4): Rheumatic Fever  الحمى ا...   Summary of streptococci    • Streptococcus pyogenes(Summary) “Medical m...   Streptococcus agalactia and viridans streptococci “Systematic Bacteriology    • Streptococci (7): Streptococcus  agalactia...   #medical #microbiology #disease #tonsilitis #clinical #group #Microstudy #streptococcus_pyogen #البكتيريا