| Size | Price | |
|---|---|---|
| 500mg | ||
| 1g | ||
| Other Sizes |
| Targets |
Aminoglycoside; Bacterial protein synthesis; 30S and 50S ribosomal subunit
|
|---|---|
| ln Vitro |
At a MIC90 of 32 mg/L, ribostamycin suppresses the activity of Borrelia burgdorferi[2]. PDI's molecular chaperone action can be inhibited by ribostamycin (1-100 μM, 0-15 min) [3]. With a minimum inhibitory concentration (MIC) ranging from 0.9 to 7.2 μM, ribostamycin suppresses the growth of Escherichia coli [4].
|
| ln Vivo |
Rats' nephrotoxicity to ribostamycin (40 mg/kg, intramuscular injection, daily for 14 days) is low, as shown by urinalysis [5].
|
| Enzyme Assay |
In the process of screening of proteins binding to ribostamycin in bovine liver using the affinity column chromatography, we found that ribostamycin inhibited the chaperone activity of protein disulfide isomerase (PDI), but it did not inhibit the isomerase activity. PDI was identified by SDS-PAGE, Western blotting, and N-terminal amino acid sequence analysis. A 100:1 molar ratio of ribostamycin to PDI was almost sufficient to completely inhibit the chaperone activity of PDI. The binding affinity of ribostamycin to purified bovine PDI was determined by the Biacore system, which gave a K(D) value of 3.19 x 10(-4) M. This suggests that ribostamycin binds to region distinct from the CGHC motif of PDI. This is the first report to describe the inhibitor of the chaperone activity of PDI[3].
|
| Cell Assay |
Cell Viability Assay[4]
Cell Types: Escherichia coli strains Tested Concentrations: 0-64 μg/mL Incubation Duration: 14 h Experimental Results: Inhibited Escherichia coli strains with a MIC of 0.9-7.2 μM. |
| Animal Protocol |
The nephrotoxicity of ribostamycin and gentamicin was compared by urinalysis using 18 parameters. When a dose of 40 mg/kg per day was administered intramuscularly to Fischer rats for 14 days, ribostamycin caused little change of parameters in urine volume, urine osmolality, urine protein, maltase and beta 2-microglobulin. A slight increase with ribostamycin was observed in alpha-fucosidase, beta-N-acetylglucosaminidase, leucine aminopeptidase, lactic dehydrogenase (LDH) and potassium, and a moderate increase was observed in acid phosphatase and alkaline phosphatase. On the other hand, gentamicin caused a large alteration in most parameters. Both antibiotics caused a change of the isoenzyme pattern of LDH1-5, but the pattern with ribostamycin was much closer to the normal pattern than with gentamicin. When a dose of 80 mg/kg of ribostamycin was compared with 10 mg/kg of gentamicin, alteration of urinary parameters was almost comparable. Histopathological observations of the kidney specimens of rats given 40 mg/kg per day showed no histological damage with ribostamycin except for a slight increase and enlargement of lysosomes of the proximal epithelial cells. However, significant histological damage was observed with gentamicin, consistent with the results obtained from urinalysis. Renal accumulation of ribostamycin at a single dose of 20 mg/kg was three times less than that of gentamicin. Ribostamycin caused slightly less nephrotoxicity in rats than kanamycin and far less than dibekacin at an equal dosage of 40 mg/kg per day for 14 days.[5]
|
| References |
|
| Additional Infomation |
Ribostamycin is an amino cyclitol glycoside that is 4,6-diaminocyclohexane-1,2,3-triol having a 2,6-diamino-2,6-dideoxy-alpha-D-glucosyl residue attached at position 1 and a beta-D-ribosyl residue attached at position 2. It is an antibiotic produced by Streptomyces ribosidificus (formerly S. thermoflavus). It has a role as a metabolite, an antimicrobial agent and an antibacterial drug. It is an amino cyclitol glycoside and an aminoglycoside antibiotic. It is a conjugate base of a ribostamycin(4+).
Ribostamycin is an aminoglycoside antibiotic isolated from Streptomyces ribosidificus listed as one of the World Health Organization's critically important antimicrobials. Ribostamycin has been reported in Streptomyces ribosidificus and Streptomyces fradiae with data available. Ribostamycin is an aminoglycoside antibiotic isolated from Streptomyces ribosidificus. A broad-spectrum antimicrobial isolated from Streptomyces ribosifidicus. Mechanism of Action Aminoglycosides work by binding to the bacterial 30S ribosomal subunit (some work by binding to the 50S subunit), inhibiting the translocation of the peptidyl-tRNA from the A-site to the P-site and also causing misreading of mRNA, leaving the bacterium unable to synthesize proteins vital to its growth. However, their exact mechanism of action is not fully known. |
| Molecular Formula |
C17H34N4O10
|
|---|---|
| Molecular Weight |
552.55100
|
| Exact Mass |
552.195
|
| Elemental Analysis |
C, 44.93; H, 7.54; N, 12.33; O, 35.20
|
| CAS # |
25546-65-0
|
| Related CAS # |
25546-65-0;53797-35-6 (sulfate);
|
| PubChem CID |
33042
|
| Appearance |
Typically exists as solid at room temperature
|
| Melting Point |
192-195°; mp 175-180° (dec)
|
| Index of Refraction |
1.662
|
| LogP |
-6.3
|
| Hydrogen Bond Donor Count |
10
|
| Hydrogen Bond Acceptor Count |
14
|
| Rotatable Bond Count |
6
|
| Heavy Atom Count |
31
|
| Complexity |
593
|
| Defined Atom Stereocenter Count |
14
|
| SMILES |
NCC1OC(OC2C(N)CC(N)C(O)C2OC2OC(CO)C(O)C2O)C(N)C(O)C1O
|
| InChi Key |
NSKGQURZWSPSBC-VVPCINPTSA-N
|
| InChi Code |
InChI=1S/C17H34N4O10/c18-2-6-10(24)12(26)8(21)16(28-6)30-14-5(20)1-4(19)9(23)15(14)31-17-13(27)11(25)7(3-22)29-17/h4-17,22-27H,1-3,18-21H2/t4-,5+,6-,7-,8-,9+,10-,11-,12-,13-,14-,15-,16-,17+/m1/s1
|
| Chemical Name |
(2R,3S,4R,5R,6R)-5-amino-2-(aminomethyl)-6-[(1R,2R,3S,4R,6S)-4,6-diamino-2-[(2S,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]oxy-3-hydroxycyclohexyl]oxyoxane-3,4-diol
|
| Synonyms |
ribostamycin; Vistamycin; 25546-65-0; Hetangmycin; Xylostatin; Antibiotic SF 733; Ribostamicina; Ribostamycine;
|
| HS Tariff Code |
2934.99.9001
|
| Storage |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month |
| Shipping Condition |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
|
| Solubility (In Vitro) |
May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
|
|---|---|
| Solubility (In Vivo) |
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.
Injection Formulations
Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline)(e.g. IP/IV/IM/SC) *Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). View More
Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). View More
Oral Formulation 3: Dissolved in PEG400 (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 1.8098 mL | 9.0490 mL | 18.0979 mL | |
| 5 mM | 0.3620 mL | 1.8098 mL | 3.6196 mL | |
| 10 mM | 0.1810 mL | 0.9049 mL | 1.8098 mL |
*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.
Calculation results
Working concentration： mg/mL；
Method for preparing DMSO stock solution： mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.
Method for preparing in vivo formulation:：Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O，mix and clarify.
(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.
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