Virology-paramyxoviruses | quick Revision Notes for NEET-PG

MumpsMC cause of parotid gland enlargement in childrenPathogenesisTransmission is through the respiratory route via droplets, saliva, and fomites-----------> virus causes primary infection in nasal and upper respiratory mucosa-------------->infects mononuclear cells and regional lymph nodes------------->spills over to bloodstream-------------> causes viremia------------> dissemination------------> mumps virus has special affinity for glandular epithelium of salivary…

Continue Reading
Virology- Rhabdoviruses | Quick Revision Notes for NEET-PG
Negri bodies in brain of a patient suffering from Rabies

Virology- Rhabdoviruses | Quick Revision Notes for NEET-PG

Rabies virus Rapidly progressive acute infectious disease of CNS  in human and other animals It has a unique morphology Bullet shaped 10nm long spikes of glycoprotein-G embedded in the Lipid envelope. This envelope is lined internally with a layer of matrix proteins Helical nucleocapsid with  -sense ssRNA Rabies only has…

Continue Reading
Mycology-Superficial Mycoses | Detailed Revision Notes for NEET-PG
Microsporum gypseum( LPCB mount)

Mycology-Superficial Mycoses | Detailed Revision Notes for NEET-PG

Tinea Versicolor Superficial fungal infection involving stratum corneum of the skin caused by Malassezia furfur C/F Commonly occurs in a humid environment Flat round scaly patches of hypo to hyperpigmented skin Non-inflammatory lesions Lab Dx Collect skin scrapings-------->treat with 10% KOH-------->budding yeasts with septate hyphae seen                                                                                                                 (spaghetti and meatball appearance)…

Continue Reading

Mycology-Lab Diagnosis | Detailed Revision Notes for NEET-PG

Specimen collection Hain/nail/sputum/skin scrapings/blood or CSF (depends upon site of infection) Microscopy                                                                                                 10% glycerol to prevent drying Keratinized tissue specimen + 10% KOH--------------------------------------------------> keratin digested and      ( skin scraping or hair)      (20-40% for nails and biopsy tissue)                               clear fungal hyphae seen Gram staining Yeast and yeast-like fungi +…

Continue Reading

Bacteriology- Clostridium | Quick Revision Notes for NEET-PG

Gram-positive spores and toxin-producing anaerobic bacillusMotility present except inC. perfringes(C.welchi)C. tetani type VICapsule present in C. perfringensC. butyricumC. perfringens(welchi)Capsulated non-motile organisms which produce oval spores present sub-terminallyStormy fermentation on litmus milk mediaLitmus milk media (differential media)contains-Skimmed milk(W/o Fat) containing sugar(Lactose) & protein (casein-milk protein)Litmus indicatorC. perfringens show stormy fermentation in…

Continue Reading

Bacteriology-Bacillus | Quick Revision Notes for NEET-PG

Gram positive sporing rods/bacillus,motile by peritrichous flagella except B. anthracis(non-motile) They are facultative anaerobs/aerobs. Spores are common contaninants of culture media In humans and animals(zoonotic) diseases are caused by 2 pathogens- B. anthracis B. cereus Bacillus anthracis Largest pathogenic bacterium Spore wall 1st discovered by Robert Koch in this organism…

Continue Reading

Bacteriology-Non-sporing anaerobic Bacillus

G+ cocci -peptoccous and peptostreptococcus G+ bacilli-Eubacterium species,Propionibacterium species,Lactobacillus species and Actinomyces G- cocci-Veillonella G-bacilli-Bacteroides fragilis Q)Enumerate 5 non-sporing anaerobic organisms A) Peptococcus- This genus has one species P. niger. It is arranged in pairs/clusters/single.It produces black color on blood agar and produces H2S Eubacterium species-present as commensals in mouth…

Continue Reading

Bacteriology-Shigella| Quick Revision for NEET-PG

Gram negative non-sporing ,non-motile & non-capsulated organism Ferments glucose producing acid but no gas(amerogenic) Non-lactose fermentors except S. soneei which is a late lactose fermentor On the basis of mannitol fermentation & somatic O polysaccharide antigen it is divided into 4 groups Mannitol fermentors -S. dysenteriae(group A) Mannitol non-fermentors-S. flexneri(group B),S.…

Continue Reading

SUBSCRIBE TO OUR NEWSLETTER TO GET UPDATES ON FUTURE POSTS

No more pages to load

Close Menu