Tag Archives: Doxycycline

Diseases of the Throat

General Anatomy And Physiology The throat is an important, but mosdy ignored, communal area of both the gastrointestinal (GI) and respiratory tracts. Anatomically it is divided into the pharynx and larynx. The pharynx is further divided into the nasopharynx, the oropharynx, and the laryngopharynx. The nasopharynx is located dorsal to the soft palate, between the… Read More »

Infective Endocarditis

Infective endocarditis (IE) is a life-threatening disorder that results from microorganisms that colonize the cardiac endocardium, which commonly causes destruction of valves or other structures within the heart. Bacteremia is by far the most common etiology, with the mitral and aortic valve most frequently affected. Vegetation may cause thromboembolism or metastatic infections, which involve multiple… Read More »


Ehrlichiosis, also known as canine typhus, is caused by the bacterial organism Ehrlichia canis. One of many tickborne diseases, ehrlichiosis is primarily a disease of dogs, although cats can be affected in rare instances. The disease is spread from dog to dog by the bite of the brown dog tick, Rhipicephalus sanguineus. First reported in… Read More »

Antibacterial preparations

Bacterial infections of the eye in animals may be caused by Staphylococcus, Streptococcus, Bacillus, Actinobacillus, Chlamydophila (Chlamydia), Moraxella, Micrococcus, or Clostridium spp. This list is not exhaustive and the bacteria involved vary between species. Ocular infections usually present as conjunctivitis, blepharitis, keratitis, keratocon-junctivitis, or uveitis. The aminoglycosides gentamicin, tobramycin and framycetin have a broad-spectrum bactericidal… Read More »

Antibacterial drugs

1 Beta-lactam antibacterials 2 Tetracyclines 3 Aminoglycosides 4 Macrolides and lincosamides 5 Chloramphenicols 6 Sulphonamides and potentiated sulphonamides 7 Nitrofurans 8 Nitroimidazoles 9 Quinolones 10 Pleuromutilins 11 Other antibacterial drugs 12 Compound antibacterial preparations Selection of a suitable drug Bacterial sensitivity. Antibacterial drugs are often used unnecessarily and sometimes (as in uncomplicated diarrhoea) when they… Read More »


The tetracyclines are broad-spectrum antibacterials active against Mycoplasma, Chlamydophila, and Rickettsia in addition to bacteria. They are active against a range of Gram-positive and Gram-negative bacteria but have little useful activity against E. coli, Salmonella, Proteus, or Pseudomonas spp. Tetracyclines are bacteriostatic and acquired resistance is now widespread among bacteria. The widely used oxytetracycline and… Read More »