Ceftriaxone

Last updated

Ceftriaxone
Ceftriaxone-skeletal.svg
Ceftriaxone-from-PDB-6XQV-3D-bs-17.png
Clinical data
Pronunciation /ˌsɛftrˈæksn/
Trade names Rocephin, Epicephin, Wintriaxone, others
AHFS/Drugs.com Monograph
MedlinePlus a685032
License data
Pregnancy
category
Routes of
administration
Intravenous, intramuscular
Drug class Third-generation cephalosporin
ATC code
Legal status
Legal status
Pharmacokinetic data
Bioavailability n/a
Metabolism Negligible
Elimination half-life 5.8–8.7 hours [3]
Excretion 33–67% kidney, 35–45% biliary
Identifiers
  • (6R,7R)-7-{[(2Z)-2-(2-amino-1,3-thiazol-4-yl)->2-(methoxyimino)acetyl]amino}-3-{[(2-methyl-5,6-dioxo-1,2,5,6-tetrahydro-1,2,4-triazin-3-yl)thio]methyl}-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
CAS Number
PubChem CID
IUPHAR/BPS
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
CompTox Dashboard (EPA)
ECHA InfoCard 100.070.347 OOjs UI icon edit-ltr-progressive.svg
Chemical and physical data
Formula C18H18N8O7S3
Molar mass 554.57 g·mol−1
3D model (JSmol)
  • O=C2N1/C(=C(\CS[C@@H]1[C@@H]2NC(=O)C(=N\OC)/c3nc(sc3)N)CS\C4=N\C(=O)C(=O)NN4C)C(=O)O
  • InChI=1S/C18H18N8O7S3/c1-25-18(22-12(28)13(29)23-25)36-4-6-3-34-15-9(14(30)26(15)10(6)16(31)32)21-11(27)8(24-33-2)7-5-35-17(19)20-7/h5,9,15H,3-4H2,1-2H3,(H2,19,20)(H,21,27)(H,23,29)(H,31,32)/b24-8-/t9-,15-/m1/s1 Yes check.svgY
  • Key:VAAUVRVFOQPIGI-SPQHTLEESA-N Yes check.svgY
   (verify)

Ceftriaxone, sold under the brand name Rocephin, is a third-generation cephalosporin antibiotic used for the treatment of a number of bacterial infections. [4] These include middle ear infections, endocarditis, meningitis, pneumonia, bone and joint infections, intra-abdominal infections, skin infections, urinary tract infections, gonorrhea, and pelvic inflammatory disease. [4] It is also sometimes used before surgery and following a bite wound to try to prevent infection. [4] Ceftriaxone can be given by injection into a vein or into a muscle. [4]

Contents

Common side effects include pain at the site of injection and allergic reactions. [4] Other possible side effects include C. difficile-associated diarrhea, hemolytic anemia, gall bladder disease, and seizures. [4] It is not recommended in those who have had anaphylaxis to penicillin but may be used in those who have had milder reactions. [4] The intravenous form should not be given with intravenous calcium. [4] There is tentative evidence that ceftriaxone is relatively safe during pregnancy and breastfeeding. [1] It is a third-generation cephalosporin that works by preventing bacteria from making a cell wall. [4]

Ceftriaxone was patented in 1978 and approved for medical use in 1982. [5] It is on the World Health Organization's List of Essential Medicines. [6] It is available as a generic medication. [4]

Medical use

A vial of ceftriaxone, manufactured and sold in Russia Tseftriakson.JPG
A vial of ceftriaxone, manufactured and sold in Russia

Ceftriaxone and other third-generation cephalosporin antibiotics are used to treat organisms that tend to be resistant to many other antibiotics. [7] Due to emergent resistance, ceftriaxone should not be used for the treatment of Enterobacter infections. [7] Before using ceftriaxone, it is important to determine the susceptibility of the bacteria. [8] If sepsis is being considered, empiric therapy may be initiated prior to susceptibility testing. [7]

Medical uses include: [8]

Ceftriaxone is also a choice drug for treatment of bacterial meningitis caused by pneumococci, meningococci, Haemophilus influenzae , and "susceptible enteric Gram-negative rods, but not Listeria monocytogenes ." [9]

In combination with doxycycline or azithromycin, ceftriaxone used to be recommended by the United States Centers for Disease Control and Prevention (CDC) for the treatment of uncomplicated gonorrhea. Due to increased risk of developing azithromycin resistant strains and the high efficacy of higher doses of ceftriaxone the guidance has been updated to mono-antibiotic therapy with a higher dose of ceftriaxone. [10]

Spectrum of activity

Like other third-generation cephalosporins, ceftriaxone is active against Citrobacter spp., Serratia marcescens , and beta-lactamase-producing strains of Haemophilus and Neisseria . [7] However, unlike ceftazidime and cefoperazone, ceftriaxone does not have useful activity against Pseudomonas aeruginosa . [7] It is generally not active against Enterobacter species, and its use should be avoided in the treatment of Enterobacter infections, even if the isolate appears susceptible, because of the emergence of resistance. [7] Some organisms, such as Citrobacter, Providencia , and Serratia , have the ability to become resistant through the development of cephalosporinases (enzymes that hydrolyze cephalosporins and render them inactive). [7] Although not being used as first line therapy against Staphylococcus aureus, ceftriaxone retains activity against isolates of methicillin-susceptible S. aureus and is used in clinic for infections sustained by this bacterium. In this case the dose should be doubled (e.g. 2 g intravenously every 12 hours). [11]

Available forms

Ceftriaxone is available for administration via the intramuscular or the intravenous routes. [8] Ceftriaxone is stored as a dry powder in a vial, and is reconstituted (dissolved) immediately before use. The solution is used promptly after preparation, still, reconstituted solutions retain their physical and chemical stability for 24 hours at 25°C (or for 3 days when stored between 2 and 8°C). [12] The solutions are pale yellowish in color, [12] but the change of color to amber or reddish suggests hydrolysis of the amide bond of the β-lactam ring, thereby affecting the antimicrobial activity of the antibiotic. [13] Diluents containing calcium are not used to reconstitute ceftriaxone, and it must not be administered in intravenous lines containing other calcium-containing solutions, as a ceftriaxone-calcium precipitate could form. [8] [14] This precipitation risk is particularly high in newborns (up to age 28 days), especially if they are premature or have impaired bilirubin binding. [15] [16]

Specific populations

Pregnancy

Ceftriaxone is pregnancy category B [ clarification needed ]. [8] [1] It has not been observed to cause birth defects in animal studies, but a lack of well-controlled studies done in pregnant women exists. [8]

Breastfeeding

Low concentrations of ceftriaxone are excreted in breast milk that are "not expected to cause adverse effects in breastfed infants." [17] [ failed verification ] The manufacturer recommends that caution be exercised when administering ceftriaxone to women who breastfeed. [8]

Newborns

Hyperbilirubinemic neonates are contraindicated for the use of ceftriaxone. [8] It can compete with bilirubin and displace it from binding to albumin, increasing the risk of bilirubin encephalopathy. [8]

Elderly

According to the package insert, clinical studies did not show differences in efficacy and safety of ceftriaxone in geriatrics compared to younger patients but "greater sensitivity of some older individuals cannot be ruled out." [8]

Adverse effects

Although generally well tolerated, the most common adverse reactions associated with ceftriaxone are changes in white blood cell counts, local reactions at site of administration, rash, and diarrhea. [18]

Incidence of adverse effects greater than 1%:

Some less frequently reported adverse events (incidence < 1%) include phlebitis, itchiness, fever, chills, nausea, vomiting, elevations of bilirubin, elevations in creatinine, headache and dizziness. [18]

Ceftriaxone may precipitate in bile, causing biliary sludge, biliary pseudolithiasis, and gallstones, especially in children. Hypoprothrombinaemia and bleeding are specific side effects. Haemolysis is reported. [19] [20] [21] It has also been reported to cause post kidney failure in children. [22] Like other antibiotics, ceftriaxone use can result in Clostridioides difficile-associated diarrhea ranging from mild diarrhea to fatal colitis. [18] In this regard it has been reported that shifting from ceftriaxone to cefotaxime would have a lower impact on C. difficile infection rates, since cefotaxime is almost entirely excreted by the kidneys [23] while ceftriaxone has a 45% biliary excretion [24]

Contraindications

Ceftriaxone should not be used in those with an allergy to ceftriaxone or any component of the formulation. Although there is negligible cross-reactivity between penicillins and third-generation cephalosporins, [9] [25] caution should still be used when using ceftriaxone in penicillin-sensitive patients. [18] Caution should be used in people who have had previous severe penicillin allergies. [18] It should not be used in hyperbilirubinemic neonates, particularly those who are premature because ceftriaxone is reported to displace bilirubin from albumin binding sites, potentially causing bilirubin encephalopathy. Concomitant use with intravenous calcium-containing solutions/products in neonates (≤28 days) is contraindicated [26] even if administered through different infusion lines due to rare fatal cases of calcium-ceftriaxone precipitations in neonatal lungs and kidneys. [18] [27]

Mechanism of action

Ceftriaxone is a third-generation antibiotic from the cephalosporin family of antibiotics. [7] It is within the β-lactam family of antibiotics. Ceftriaxone selectively and irreversibly inhibits bacterial cell wall synthesis by binding to transpeptidases, also called transamidases, which are penicillin-binding proteins (PBPs) that catalyze the cross-linking of the peptidoglycan polymers forming the bacterial cell wall. [28] The peptidoglycan cell wall is made up of pentapeptide units attached to a polysaccharide backbone with alternating units of N-acetylglucosamine and N-acetylmuramic acid. [29] [30] PBPs act on a terminal D-alanyl-D-alanine moiety on a pentapeptide unit and catalyze the formation of a peptide bond between the penultimate D-alanine and a glycine unit on an adjacent peptidoglycan strand, releasing the terminal D-alanine unit in the process. [28] [30] The structure of ceftriaxone mimics the D-alanyl-D-alanine moiety, and the PBP attacks the beta-lactam ring in ceftriaxone as if it were its normal D-alanyl-D-alanine substrate. [28] The peptidoglycan cross-linking activity of PBPs is a construction and repair mechanism that normally helps to maintain bacterial cell wall integrity, so the inhibition of PBPs leads to damage and destruction of the cell wall and eventually to cell lysis. [28]

Pharmacokinetics

Absorption: Ceftriaxone can be administered intravenously and intramuscularly, and the drug is completely absorbed. [8] [31] It is not available orally. [32] [33]

Distribution: Ceftriaxone penetrates tissues and body fluids well, including cerebrospinal fluid to treat central nervous system infections. [8] [34] Ceftriaxone is reversibly bound to human plasma proteins and the binding of ceftriaxone decreases with increasing concentration from a value of 95% at plasma concentrations less than 25 mcg/mL to 85% at plasma concentration of 300 mcg/mL. Over a 0.15 to 3 g dose range in healthy adult subjects, the apparent volume of distribution ranged from 5.8 to 13.5 L. [8]

Metabolism: 33–67% of ceftriaxone is renally excreted as unchanged drug, but no dose adjustments are required in renal impairment with dosages up to 2 grams per day. [8] The rest [35] is excreted in the bile as unchanged drug [36] which is ultimately excreted in feces as inactive compounds from hepatic and gut flora metabolism. [8] [37] [38]

Elimination: The average elimination half-life in healthy adults is 5.8–8.7 (mean 6.5) hours, [3] with some reviews estimated half-life is up to 10 hours. [39] In people with renal impairment, the average elimination half-life increases to 11.4–15.7 hours. [8]

Chemistry

Ceftriaxone is commercially available as a white to yellowish-orange crystalline powder for reconstitution. [8] Reconstituted ceftriaxone injection solutions are light yellow- to amber-colored depending on how long the solution had been reconstituted, the concentration of ceftriaxone in the solution, and the diluent used. [8] To reduce pain with intramuscular injections, ceftriaxone may be reconstituted with lidocaine. [40]

The syn-configuration of the methoxy oxime moiety confers resistance to beta-lactamase enzymes produced by many Gram-negative bacteria. [28] The stability of this configuration results in increased activity of ceftriaxone against otherwise resistant Gram-negative bacteria. [28] In place of the easily hydrolyzed acetyl group of cefotaxime, ceftriaxone has a metabolically stable thiotriazinedione moiety. [28]

Research

Ceftriaxone has also been investigated for efficacy in preventing relapse to cocaine addiction. [41]

Ceftriaxone seems to increase excitatory amino acid transporter-2 pump expression and activity in the central nervous system, so has a potential to reduce glutamatergic toxicity. [42] [43]

Ceftriaxone has been shown to have neuroprotective properties in a number of neurological disorders, including spinal muscular atrophy [44] and amyotrophic lateral sclerosis (ALS). [45] Despite earlier negative results in the 1990s, a large clinical trial was undertaken in 2006 to test ceftriaxone in ALS patients, but was stopped early after it became clear that the results would not meet the predetermined criteria for efficacy. [46]

Related Research Articles

<span class="mw-page-title-main">Beta-lactamase</span> Class of enzymes

Beta-lactamases (β-lactamases) are enzymes produced by bacteria that provide multi-resistance to beta-lactam antibiotics such as penicillins, cephalosporins, cephamycins, monobactams and carbapenems (ertapenem), although carbapenems are relatively resistant to beta-lactamase. Beta-lactamase provides antibiotic resistance by breaking the antibiotics' structure. These antibiotics all have a common element in their molecular structure: a four-atom ring known as a beta-lactam (β-lactam) ring. Through hydrolysis, the enzyme lactamase breaks the β-lactam ring open, deactivating the molecule's antibacterial properties.

<span class="mw-page-title-main">Penicillin</span> Group of antibiotics derived from Penicillium fungi

Penicillins are a group of β-lactam antibiotics originally obtained from Penicillium moulds, principally P. chrysogenum and P. rubens. Most penicillins in clinical use are synthesised by P. chrysogenum using deep tank fermentation and then purified. A number of natural penicillins have been discovered, but only two purified compounds are in clinical use: penicillin G and penicillin V. Penicillins were among the first medications to be effective against many bacterial infections caused by staphylococci and streptococci. They are still widely used today for various bacterial infections, though many types of bacteria have developed resistance following extensive use.

β-Lactam antibiotic Class of broad-spectrum antibiotics

β-Lactam antibiotics are antibiotics that contain a β-lactam ring in their chemical structure. This includes penicillin derivatives (penams), cephalosporins and cephamycins (cephems), monobactams, carbapenems and carbacephems. Most β-lactam antibiotics work by inhibiting cell wall biosynthesis in the bacterial organism and are the most widely used group of antibiotics. Until 2003, when measured by sales, more than half of all commercially available antibiotics in use were β-lactam compounds. The first β-lactam antibiotic discovered, penicillin, was isolated from a strain of Penicillium rubens.

<span class="mw-page-title-main">Ertapenem</span> Antibiotic medication

Ertapenem, sold under the brand name Invanz, is a carbapenem antibiotic medication used for the treatment of infections of the abdomen, the lungs, the upper part of the female reproductive system, and the diabetic foot.

<span class="mw-page-title-main">Methicillin</span> Antibiotic medication

Methicillin (USAN), also known as meticillin (INN), is a narrow-spectrum β-lactam antibiotic of the penicillin class.

<span class="mw-page-title-main">Cephalosporin</span> Class of pharmaceutical drugs

The cephalosporins are a class of β-lactam antibiotics originally derived from the fungus Acremonium, which was previously known as Cephalosporium.

<span class="mw-page-title-main">Aztreonam</span> Chemical compound

Aztreonam, sold under the brand name Azactam among others, is an antibiotic used primarily to treat infections caused by gram-negative bacteria such as Pseudomonas aeruginosa. This may include bone infections, endometritis, intra abdominal infections, pneumonia, urinary tract infections, and sepsis. It is given by intravenous or intramuscular injection or by inhalation.

<span class="mw-page-title-main">Cefazolin</span> Antibiotic medication

Cefazolin, also known as cefazoline and cephazolin, is a first-generation cephalosporin antibiotic used for the treatment of a number of bacterial infections. Specifically it is used to treat cellulitis, urinary tract infections, pneumonia, endocarditis, joint infection, and biliary tract infections. It is also used to prevent group B streptococcal disease around the time of delivery and before surgery. It is typically given by injection into a muscle or vein.

<span class="mw-page-title-main">Cefalexin</span> Beta-lactam antibiotic

Cefalexin, also spelled cephalexin, is an antibiotic that can treat a number of bacterial infections. It kills gram-positive and some gram-negative bacteria by disrupting the growth of the bacterial cell wall. Cefalexin is a β-lactam antibiotic within the class of first-generation cephalosporins. It works similarly to other agents within this class, including intravenous cefazolin, but can be taken by mouth.

<span class="mw-page-title-main">Cefuroxime axetil</span> Chemical compound

Cefuroxime axetil, sold under the brand name Ceftin among others, is a second generation oral cephalosporin antibiotic.

<span class="mw-page-title-main">Carbapenem</span> Class of highly effective antibiotic agents

Carbapenems are a class of very effective antibiotic agents most commonly used for treatment of severe bacterial infections. This class of antibiotics is usually reserved for known or suspected multidrug-resistant (MDR) bacterial infections. Similar to penicillins and cephalosporins, carbapenems are members of the beta-lactam antibiotics drug class, which kill bacteria by binding to penicillin-binding proteins, thus inhibiting bacterial cell wall synthesis. However, these agents individually exhibit a broader spectrum of activity compared to most cephalosporins and penicillins. Furthermore, carbapenems are typically unaffected by emerging antibiotic resistance, even to other beta-lactams.

<span class="mw-page-title-main">Cefotaxime</span> Chemical compound

Cefotaxime is an antibiotic used to treat a number of bacterial infections in human, other animals and plant tissue culture. Specifically in humans it is used to treat joint infections, pelvic inflammatory disease, meningitis, pneumonia, urinary tract infections, sepsis, gonorrhea, and cellulitis. It is given either by injection into a vein or muscle.

Ampicillin/sulbactam is a fixed-dose combination medication of the common penicillin-derived antibiotic ampicillin and sulbactam, an inhibitor of bacterial beta-lactamase. Two different forms of the drug exist. The first, developed in 1987 and marketed in the United States under the brand name Unasyn, generic only outside the United States, is an intravenous antibiotic. The second, an oral form called sultamicillin, is marketed under the brand name Ampictam outside the United States, and generic only in the United States. Ampicillin/sulbactam is used to treat infections caused by bacteria resistant to beta-lactam antibiotics. Sulbactam blocks the enzyme which breaks down ampicillin and thereby allows ampicillin to attack and kill the bacteria.

<span class="mw-page-title-main">Flucloxacillin</span> Penicillin

Flucloxacillin, also known as floxacillin, is an antibiotic used to treat skin infections, external ear infections, infections of leg ulcers, diabetic foot infections, and infection of bone. It may be used together with other medications to treat pneumonia, and endocarditis. It may also be used prior to surgery to prevent Staphylococcus infections. It is not effective against methicillin-resistant Staphylococcus aureus (MRSA). It is taken by mouth or given by injection into a vein or muscle.

<span class="mw-page-title-main">Dicloxacillin</span> Chemical compound

Dicloxacillin is a narrow-spectrum β-lactam antibiotic of the penicillin class. It is used to treat infections caused by susceptible (non-resistant) Gram-positive bacteria. It is active against beta-lactamase-producing organisms such as Staphylococcus aureus, which would otherwise be resistant to most penicillins. Dicloxacillin is available under a variety of trade names including Diclocil (BMS).

<span class="mw-page-title-main">Penicillin-binding proteins</span> Class of proteins

Penicillin-binding proteins (PBPs) are a group of proteins that are characterized by their affinity for and binding of penicillin. They are a normal constituent of many bacteria; the name just reflects the way by which the protein was discovered. All β-lactam antibiotics bind to PBPs, which are essential for bacterial cell wall synthesis. PBPs are members of a subgroup of transpeptidase enzymes called DD-transpeptidases.

<span class="mw-page-title-main">Ceftobiprole</span> Chemical compound

Ceftobiprole, sold under the brand name Zevtera among others, is a fifth-generation cephalosporin antibacterial used for the treatment of hospital-acquired pneumonia and community-acquired pneumonia. It is marketed by Basilea Pharmaceutica under the brand names Zevtera and Mabelio. Like other cephalosporins, ceftobiprole exerts its antibacterial activity by binding to important penicillin-binding proteins and inhibiting their transpeptidase activity which is essential for the synthesis of bacterial cell walls. Ceftobiprole has high affinity for penicillin-binding protein 2a of methicillin-resistant Staphylococcus aureus strains and retains its activity against strains that express divergent mecA gene homologues. Ceftobiprole also binds to penicillin-binding protein 2b in Streptococcus pneumoniae (penicillin-intermediate), to penicillin-binding protein 2x in Streptococcus pneumoniae (penicillin-resistant), and to penicillin-binding protein 5 in Enterococcus faecalis.

Cephalosporins are a broad class of bactericidal antibiotics that include the β-lactam ring and share a structural similarity and mechanism of action with other β-lactam antibiotics. The cephalosporins have the ability to kill bacteria by inhibiting essential steps in the bacterial cell wall synthesis which in the end results in osmotic lysis and death of the bacterial cell. Cephalosporins are widely used antibiotics because of their clinical efficiency and desirable safety profile.

<span class="mw-page-title-main">Antibiotic resistance in gonorrhea</span>

Neisseria gonorrhoeae, the bacterium that causes the sexually transmitted infection gonorrhea, has developed antibiotic resistance to many antibiotics. The bacteria was first identified in 1879.

<span class="mw-page-title-main">Ceftolozane/tazobactam</span> Antibiotic

Ceftolozane/tazobactam, sold under the brand name Zerbaxa, is a fixed-dose combination antibiotic medication used for the treatment of complicated urinary tract infections and complicated intra-abdominal infections in adults. Ceftolozane is a cephalosporin antibiotic, developed for the treatment of infections with gram-negative bacteria that are resistant to conventional antibiotics. It was studied for urinary tract infections, intra-abdominal infections and ventilator-associated bacterial pneumonia.

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