Bacterial diseases-actinobacillosis, Biology

Actinobacillosis


Synonym
  : Wooden Tongue Causative organism

                 : Actinobacillus lignieresii Species affected 

                 : Ruminants, cattle and sheep

Symptoms  : Soft tissue including glands, lungs and subcutaneous tissue are affected.


Hard tissues like bones are not affected. The disease appears under the skin in the form of a hard nodule. The nodule grows rapidly and assumes the nature of a cold abscess, with the softening of its central part. A number of abscesses may develop in circumscribed area at one and the same time. Each abscess eventually bursts and emits thick creamy pus, which contains causal organisms of the disease. The lesions often extend to other soft organs, such as tongue, pharyngeal lymph nodes and oesophageal groove. Sometimes lungs may also be affected. In sheep, the different nature of prehension of feed leads to lesions predominantly in the lips and the cheeks and occasional extension to the mucous membranes and the soft tissues of the head and the neck.
Diagnosis: from actinobacillosis lesions contains granules or rosette containing  colonies of the causal organism. These colonies are less than 1 mm in diameter. By comparison the sulphur granules of actinomycosis are several mm in diameters. The disease can be clinically differentiated from actinomycosis in that the bone is not involved. Stained smears of the pus usually reveal gram-negative bacilli in contrast to the gram-positive filaments demonstrable in actinomycosis.


Treatment:
Skin infections are not serious if attended properly. Cases of wooden tongue often terminate fatally. The disease is amenable to treatment with iodide given orally or intravenously promptly reduces the inflammatory swelling which is the main clinical problem. Broad spectrum antibiotics and sulfonamides are effective. Systemic treatment is indicated for tongue and pharyngeal lesions, but may also be used to supplement local treatment.

Posted Date: 9/17/2012 5:39:12 AM | Location : United States







Related Discussions:- Bacterial diseases-actinobacillosis, Assignment Help, Ask Question on Bacterial diseases-actinobacillosis, Get Answer, Expert's Help, Bacterial diseases-actinobacillosis Discussions

Write discussion on Bacterial diseases-actinobacillosis
Your posts are moderated
Related Questions
Q. Why iodine is vital for human beings? Iodine is a essential chemical element for the proper functioning of the thyroid since it is part of the hormones produced by this glan

What are the excretory organ in protozoa,coelenterates, insects,spider,and arthropods

Sulphur Cycle - Nutrient Cycles The sulphur cycle is mostly sedimentary except for a short gaseous phase. The large reservoir of sulphur is in the soil and sediment where it i

Tick-Borne Encephalitis (TBE ) TBE occurs in Scandinavia, Western and Central Europe and countries of the former USSR, mainly in rural forested areas. Risk is greatest from Apri

MAJOR EVENTS DURING GASTRULATION - 1.       There is rearrangement of cells due to morphogenetic movement of the cells of blastoderm. 2.       The three primary germ layer g

Conduction An action potential occurs at one point along the axon. Yet we know that neurological impulses are not fixed, they travel along a neuron. So how can the action pote

Explain Chlamydia  A single 1 g dose of azithromycin (Zithromax) or 7 days' treatment with a tetracycline are both effective for treatment of uncomplicated urethral or cervical


HARD Y - WEINBERG LAW - Proposed by G.H. Hardy and W. Weinberg in 1908 independently. The law states "the frequency of genes or alleles in a population remains constant

Weiss's Theory of Fibroosseous Fixation Weiss' theory stated that there is a fibro-osseous ligament formed between the implant and the bone and this ligament can be considered