Mikrobiologi - Marwoto, Dr., Msc., Spmk
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INFECTIONS OF THE
SKINMarwoto,dr.,MSc.,SpMK.
Lab. MikrobiologiFK – UNS Solo
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What m o cause inf of the skin..??
1. Bacterial skin infection.
2. Viral skin infection.
3. Fungal skin infection.
4. Arthropod infestation.
5. Surgical wound infection.
6. Burn wound infection.
7. Necrotizing infection.
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PYOGENIC COCCI
: Bakteri berbentuk kokus (bulat ) & pembentuk pus (nanah)
- PUS : substansi berisi kuman, sel darah, jaringan tubuh yg rusak.
- Bacteria : Staphylococcus sp. Streptococcus sp. Pneumococcus. Nisseria sp.
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STAPHYLOCOCCUS
• Morfologi : - kokus bergerombol - tidak berflagel - tidak berspora - Gram (+)
• Culture : - t opt : 37C (15-40)- pH opt : 7,4- aerob, fakultatif anaerob
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• Koloni : - bulat, d : 1-2 mm- permukaan cembung, mengkilat, tepi rata- pada agar darah tdp zona hemolise
• Virulensi :diperiksa dengan tes koagulase, tes hemolise, tes pembentukan pigmen, tes manitol, tes pembentukan & lysin.
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• Resistensi :- mati pada 65 C selam 30’- pada kertas, kain, benang yang kering dapat bertahan : 6 – 14 mgg- pada medium agar miring dalam suhu
rendah dapat bertahan berbulan-bulan
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• Toksin dan Enzim :1. Katalase
Membedakan Stafilo dan Strepto
2. Coagulase Menggumpalkankan plasma
3. Hyaluronidase Memecah asam hyaluronat, penyebaran
4. Stafilokinase (fibrinolisin) Melisiskan fibrin
5. Proteinase6. Lipase7. Penisilinase : beta-laktamase8. Eksotoksin
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GAMBARAN KLINIS
• Kulit : furunkel, karbunkel, selulitis, Impetigo
• Kuku : paronikia• ISK : sistitis, pyelitis
• Infeksi lanjut septikemia... – Sepsis puerpuralis– Meningitis & encepalitis– Osteomielitis– Pneumonia, dll.
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STREPTOCOCCUS
• Morfologi : - kokus berantai - tidak berflagela - tidak berspora - Gram positif - facultatif ano - aerob
• Kultur : - t opt : 37C (35-43)
- pH opt : 7,4
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• Koloni : - bulat kecil - opalescen - cembung, tepi rata
- mukoid
• Sifat hemolisa :1. hemolise (gol. Viridan) 2. hemolise (gol. Hemolitikus)3. hemolise (gol. Anhemolitikus)
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• Resistensi : – Mati pada 60C, selama : 30-60’– Pada sputum, pus dapat hidup beberapa
minggu
Toksin dan Enzim :
1.Streptokinase (fibrinolysin)
2.Hyaluronidase
3.Eksotoksin pyrogenik
--- Streptococcal toxic shock syndrom
4. Diphosphoperydine nucleotidase
--- membunuh leukosit
5. Hemolisin (streptolysin)
--- melysiskan eritrosit
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GAMBARAN KLINIS
• Spesifik : scarlet fever, erisipelas (kulit), endokarditis bakterial
• Kulit : karbunkel, impetigo• ISPA : faringitis, tonsilitis, pneumonia• THT : otitis eksterna, mastoiditis• Demam rematik : arthritis, Penyakit
Jantung Rematik