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| ln Vivo |
In comparison to the intravenous group, abatacept significantly reduced leg edema in the subcutaneous multiple-dose group (tobs=2.50)[2]. Across the whole dose range under investigation, abatacept showed linear PK. The bottle volume (Vss) is 146 mL/kg, the NCA clearance (CL) is 20.8 mL/day/kg, and the subcutaneous spray's bioavailability (F) is 57.7% [2]. Oral abatacept (10 mg/kg; every 2 days) decreases the percentage of T cells that are activated (CD44highCD62L–) and prevents the elevation of CD71 and ICOS in homozygous DO11.10 RAG-2–/– BALB/c (H-2d /d) s[3].
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| Animal Protocol |
Animal/Disease Models: Male Lewis rats (6-9 weeks old) weighing 150-175 g[2]
Doses: 10 mg/kg daily (IV), 20 mg/kg (SC single dose), 20 mg/kg ( SC multiple doses) 21 subcutaneous injection of 10 mg/kg on days 23, 25, 27 and 29 Dosage Route of Administration: intravenous (iv) (iv)or subcutaneous injection Experimental Results: paw edema was diminished, and the paw edema in the subcutaneousmultiple dose group was compared with the control group Edema reduction was Dramatically greater (tobs = 2.50) in the IV dose group. Animal/Disease Models: Male Lewis rat (6-9 weeks old), body weight 150-175 g[2] Doses: 10 mg/kg (IV), 20 mg/kg (SC single dose), 20 mg/kg (SC) Multiple doses) 10 mg/kg subcutaneously (sc) (sc) on Day 21, Days 23, 25, 27 and 29 (pharmacokinetic/PK/PK study) Dosing: IV or SC Experimental Results: NCA clearance (CL) was 20.8 mL/ day/kg, the volume (Vss) is 146mL/kg, and the bioavailability (F) of SC dose administration is 57.7%. |
| References |
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| CAS # |
332348-12-6
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| Appearance |
Colorless to light yellow liquid
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| HS Tariff Code |
2934.99.9001
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| 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)
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| 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
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| 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.) |
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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