Gram - negative bacteria, Biology

Assignment Help:

Organisms of the so-called HACEK group, (Haemophilus, Actinobacillus actinomycetemcomitans, Cardiobacterium hominis, Eikenella species, Kingella kingae) which are part of the upper respiratory tract and oropharyngeal flora, infect abnormal cardiac valves, causing subacute NVE and cause PVE that occurs a year or more after valve surgery. In NVE, the HACEK organisms have been associated with large vegetations and a high incidence of systemic emboli. These organisms are fastidious and slow growing; when they are suspected, blood cultures should be incubated for 3 weeks. P. Aeruginosa is the gram-negative bacillus that most commonly causes endocarditis. Pseudomonal IE involves normal and abnormal valves on both sides of the heart and often causes valve destruction and heart failure.

The rickettsia C. burnetii infects humans after inhalation of desiccated materials from infected animals or contact with infected parturient animals. At variable intervals after acute infection by C. burnetii (Q. fever), persons with abnormal mitral or aortic valves who have not been able to eradicate the organism develop subacute IE with typical manifestations and often with valve dysfunction causing heart failure. The diagnosis is typically based on high IgG and IgA antibody titers to phase I C. burnetii antigens.


Related Discussions:- Gram - negative bacteria

Factors influencing metabolism, Let us learn about the factors that affect ...

Let us learn about the factors that affect metabolism: 1) More energy is required when muscular work is carried out. 2) The larger the surface area of the body, more heat is

What is the ploidy of these gamete-forming cells, What is the name of the c...

What is the name of the cells capable of making gametes? What is the ploidy of these gamete-forming cells? The cells that form gametes are the germ cells as opposed to the soma

What is the dental implants option, Dental implants option It is import...

Dental implants option It is important that the type of prosthetic options selected for the patient is not only cost effective, but also must  be predictable and restores the e

Name of structures you would expect to find in the dermis, Name of the stru...

Name of the structures you would expect to find in the dermis. In the dermis you would expect to search sensory nerve endings, nerve fibres, capillaries, arterioles and venules

What is the meaning of darwins expression, What is the meaning of Darwin's ...

What is the meaning of Darwin's expression "descent with modification"? Descent with modification refers to natural selection. Descent with modification refers to evolutionary chan

Explain what is meant by ovulation, a) Explain what is meant by ovulation. ...

a) Explain what is meant by ovulation. b)  How often does it happen in humans?   (a) Ovulation is the release of an ovum from a mature follicle in the ovary.

Zoochory - dispersal of seeds, Zoochory - Dispersal of Seeds Some frui...

Zoochory - Dispersal of Seeds Some fruits are eaten by animals and the seeds are passed out with the excreta (endozoochory). Plums, Lantana, grapes, figs and guava are example

Define briefly about the conjugated proteins, Define briefly about the Conj...

Define briefly about the Conjugated Proteins? Conjugated proteins are made up of simple proteins combined with a non- proteinous substance. The non-proteinous substance is know

Describe briefly about vitamin B2, Vitamin B 2 (Riboflavin) Riboflavin...

Vitamin B 2 (Riboflavin) Riboflavin is a yellow to orange-yellow, crystalline powder of faint odour and intensely bitter taste. Its solubility in water is very slight and depe

Closed heart surgery, CLOSED HEART SURGERY :  Operative procedures on ...

CLOSED HEART SURGERY :  Operative procedures on the heart or major intra thoracic vessels done when the heart is beating and supporting effective circulation come under the ca

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd