YEAST AND YEAST LIKE ORGANISMS

Jef Marc Valencia · 73問 · 2年前

通報

問題一覧

Yeasts are ____some of which are pathogenic to humans

UNICELLULAR FUNGI

About how many species of yeasts are clinically significant

Reproduction of Yeasts

BUDDING, PSEUDOHYPHAE

Capable to reproduce both sexual and asexual

YEAST, PERFECT FUNGI

Reproduce via asexual only

YEAST LIKE FUNGI, FUNGI IMPERFECTI

A method of asexual reproduiction where a small outgrowth forms on the parent cell

BUDDING

Round or oval cells often seen singly or in pairs

BUDDING

C'monly refer to as true yeast reproduction

BUDDING

New cell pinches off

BUDDING

A type of elongated growth where buds remain attached after division forming chain of cells

PSEUDOHYPHAE

Daughter cells elongate but do not separate completely, remaining connected end-to -end

PSEUDOHYPHAE

Long branching chains of elongated cells resembling true hypahe but with constrictions at the septa

PSEUDOHYPHAE

Characteristics of yeast like fungi helps with tissue invasion

PSEUDOHYPHAE

Stuck buds forming chains

PSEUDOHYPHAE

These are the pathogens found on skin and mucous membrane like the oral cavity, vagina, and GI tract

NORMAL FLORA

These causes endogenous infections which begins form the hosts own flora and begins as localized lesions and can disseminate in immunocompromised individuals

OPPORTUNISTIC PATHOGEN

Host defense status can be weakened by

ANTIBIOTIC, IMMUNOSUPPRESION, DIABETES

Microscopic examination to observe budding yeasts cells

WET MOUNT

Most c'monly used microscopic examination for yeasts

WET MOUNT

Yeasts appear dark blue to blue black larger than bacteria

GRAM STAIN

Optimum temperature for yeasts

35-37C

Media used for yeast culture

MODIFIED SABOURAUD DEXTROSE AGAR, BLOOD AGAR PLATE, SABOURAUD BRIAN HEART INFUSION AGAR, CORNEAL TWEEN 80 AGAR

Which of these enhances chlamydospore formation

CORNEAL TWEEN 80 AGAR

Macroscopic appearance of yeast colonies

WHITE-CREAM, SMOOTH/PASTY

Macroscopic appearance of yeasts often resembles what colony on agar

COAGULASE NEGATIVE STAPHYLOCOCCUS

Long continuous tube like true filaments

HYPHAE

Elongated buds with constrictions but w/o septa which formed when buds failed to detach

PSEUDOHYPHAE

Budding cells attached singly or in small clusters

BLASTOCONIDIA

YEAST

PSEUDOHYPHAE

TRUE HYPHAE

Shape has parallel walls with no constrictions

GERM TUBE

It has no septa

GERM TUBE, PSEUDOHYPHAE

Indicative of Candida albicans

GERM TUBE

Indicative of Candida species in general

PSEUDOHYOPHAE

Shape has constrictions

PSEUDOHYOPHAE

BUDDING YEAST, PSEUDOHYPHAE, GERM TUBE, HYPHA

Candida albicans are formerly known as

MONILIA ALBICAN

Disease cuased by Candida albicans

CANDIDIASIS

C'mon normal flora that causes opportunistic infections

CANDIDA ALBICAN

Candida infection of mucous membranes of the mouth

ORAL CANDIDIASIS, THRUSH

Candidiasis infection due to decreased vagina pH due to pregnancy, diabetes, antibiotic or OCP use

VAGINITIS

Candidiasis infection of the penis

BALANITIS

Candidiasis infection around the nails c'mon in dishwasher and bartender

PARONYCHIA

Candidiasis infection that affects lungs, heart (endocarditis), kidneys, or systemic circulation

DISSEMINATED CANDIDIASIS

Disseminated candidiasis may progress to

SEPTICEMIA, MULTIPLE ORGAN FAILURE

Produces blastoconidia on pseudohyphae has thick walled chlamydospores

CANDIDA ALBICAN

Confirmatory test for Candida albicans

GERM TUBE TEST

Appears as creamy smooth colonies in SDA

CANDIDA ALBICAN

Disease caused by Cryptococcus neoformans

CRYPTOCOCCOSIS

Main source of Cryptococcosis neoformans

PIGEON DROPPING

Main predilection site and disease of Cryptococcosis neoformans

CENTRAL NERVOUS SYSTEM, MENINGOENCEPHALITIS

C'mon in AIDS and immunocompromised patients

CRYPTOCOCCUS NEOFORMAN

Hallmark of Crytococcosis neoforman

OVAL ENCAPSULATED YEAST CELL

This cannot be found in Cryptococcosis neoformans

HYPHAE, PSEUDOHYPHAE

Capsule of Cryptococcosis neoforman is visualized by

INDIA INK, LACTOPHENOL COTTON BLUE

Cryptococcosis neoformans antigen is detected by

LATEX AGGLUTINATION TEST

C'monly found in dairy products, fruits, and vegetables

GEOTRICHUM CANDIDUM

Opportunistic pulmonary or oral infection caused by Geotrichum candidum

GEOTRICHOSIS

It has true hyphae fragment into arthroconidia taht is rectangular or hockey stick appearance

GEOTRICHUM CANDIDUM

Geotrichum candidum has no

BLASTOCONIDIA, PSEUDOHYPHAE

Previously thought to be a protozoan now known as a yeast like fungus that cannot be grown on artificial media

PNEUMOCYSTIS CARINI, PNEUMOCYSTIS JIROVECII

Disease caused by P. carinii c'mon in AIDS patients

PNEUMOCYSTIS PNEUMONIA

They may appear as cysts and trophozoites amoeboid forms

PNEUMOCYSTIS CARINII, PNEUMOCYSTIS JIROVECII

P. carinii or P. jirovecii is best stained with

TOLUIDINE BLUE O, GOMORI METHENAMINE SILVER, CALCOFLUOR WHITE

Cysts of P. carinii appear as __against a blue background

REDDISH PURPLE

Brewers yeast that is occasional opportunistic pathogen in immunocompromised hosts

SACCHAROMYCES CEREVISIAE

Non germ tube forming causing urinary and bloodstream infections especially in diabetics and elderly

TORULOPSIS GLABRATA

CANDIDA ALBICAN

CRYPTOCOCCUS NEOFORMAN

GEOTRICHUM CANDIDUM

PNEUMOCYSTIS JIROVECII

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NPN

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LESSON 10

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Introduction pg 3

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dis 5

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Introduction

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Introduction

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