4004
T3D3950
Doxycycline
A synthetic tetracycline derivative with similar antimicrobial activity. Animal studies suggest that it may cause less tooth staining than other tetracyclines. It is used in some areas for the treatment of chloroquine-resistant falciparum malaria (malaria, falciparum). [PubChem]
564-25-0
5281011
C22H24N2O8
White powder.
201°C
630 mg/L (at 25°C)
Completely absorbed following oral administration.
Tetracyclines target the 28S small subunit of the mitochondrial ribosome thereby deactivation mitochondrial protein synthesis. As a result tetracyclines are cytotoxic to the most metabolically active cells or tissues including the heart, liver, thymus and bone-marrow. (A7823). The likely target of most tetracyclines is the 12S rRNA molecule in the mitochondrial ribosome, which is analogous to the 16S rRNA in bacterial ribosomes.
Hepatic
Route of Elimination: They are concentrated by the liver in the bile and excreted in the urine and feces at high concentrations in a biologically active form.
Half Life: 18-22 hours
LD50=262 mg/kg (I.P. in rat).
No indication of carcinogenicity to humans (not listed by IARC).
Doxycycline is indicated for use in respiratory tract infections caused by Mycoplasma pneumoniae, Haemophilus influenzae, Streptococcus pneumoniae, Legionella spp., or Klebsiella spp. It is also used for prophylaxis of malaria. Doxycycline is indicated for a variety of bacterial infections, from Mycobacterium fortuitum and M. marinum, to susceptible E. coli and Brucella spp. It can be used as an alternative to treating plague, tetanus, Campylobacter fetus
Side effects from normal doses of tetracyclines are relatively minimal, but of particular note is phototoxicity. Tetracylclines increase the risk of sunburn under exposure to light from the sun or other sources. Tetracyclines may also cause stomach or bowel upsets, and, on rare occasions, allergic reactions. Very rarely, severe headache and vision problems may be signs of dangerous secondary intracranial hypertension, also known as pseudotumor cerebri. Tetracyclines are teratogens and cause tooth discolouration and poor tooth mineralization in the fetus as they develop in infancy. Symptoms of tetracycline overdose include anorexia, nausea, diarrhea, glossitis, dysphagia, enterocolitis and inflammatory lesions, skin reactions such as maculopapular and erythematous rashes, exfoliative dermatitis, photosensitivity, hypersensitivity reactions such as urticaria, angioneurotic oedema, anaphylaxis, anaphyl-actoid purpura, pericarditis, and exacerbation of systemic lupus erythematosus, benign intracranial hypertension in adults disappearing on discontinuation of the medicine, haematologic abnormalities such as haemolytic anaemia, thrombocytopenia, neutropenia, and eosinophilia.
Symptoms of overdose include anorexia, nausea, diarrhoea, glossitis, dysphagia, enterocolitis and inflammatory lesions (with monilial overgrowth) in the anogenital region, skin reactions such as maculopapular and erythematous rashes, exfoliative dermatitis, photosensitivity, hypersensitivity reactions such as urticaria, angioneurotic oedema, anaphylaxis, anaphyl-actoid purpura, pericarditis, and exacerbation of systemic lupus erythematosus, benign intracranial hypertension in adults disappearing on discontinuation of the medicine, haematologic abnormalities such as haemolytic anaemia, thrombocytopenia, neutropenia, and eosinophilia.
Drug therapy is discontinued immediately; exchange transfusion may be required to remove the drug. Sometimes, phenobarbital (UGT induction) is used.
2014-08-28T18:03:36Z
2014-12-24T20:26:34Z
Doxycycline
C06973
50845
DB00254
DXT
true
[H][C@]1(C)C2=C(C(O)=CC=C2)C(=O)C2=C(O)[C@]3(O)C(=O)C(C(O)=N)=C(O)[C@@]([H])(N(C)C)[C@]3([H])[C@@]([H])(O)[C@]12[H]
C22H24N2O8
InChI=1S/C22H24N2O8/c1-7-8-5-4-6-9(25)11(8)16(26)12-10(7)17(27)14-15(24(2)3)18(28)13(21(23)31)20(30)22(14,32)19(12)29/h4-7,10,14-15,17,25,27-29,32H,1-3H3,(H2,23,31)/t7-,10+,14+,15-,17-,22-/m0/s1
InChIKey=JBIWCJUYHHGXTC-AKNGSSGZSA-N
444.4346
444.153265754
Exogenous
Solid
-0.02
HMDB14399
CHEMBL1433
4444486
<p>Dai-Wu Seol, “<span class="caps">DNA</span> cassette for the production of secretable recombinant trimeric <span class="caps">TRAIL</span> proteins, tetracycline/ doxycycline-inducible adeno-associated virus vector, their combination and use in gene therapy.” U.S. Patent US20020128438, issued September 12, 2002.</p>