| Primary information |
|---|
| ThPP ID | Th1105 |
| Therapeutic Peptide/Protein Name | Insulin aspart |
| Sequence | A chainGIVEQCCTSICSLYQLENYCN B chainFVNQHLCGSHLVEA view full sequnce in fasta |
| Functional Classification | Ia |
| Molecular Weight | 582580 |
| Chemical Formula | C256H381N65O79S6 |
| Isoelectric Point | N.A. |
| Hydrophobicity | N.A. |
| Melting Point (℃) | N.A. |
| Half Life | 81 mins. SC injection |
| Description | Recombinant (from S. cerevisiae),fast-acting insulin analogue. It contains a single amino acid substitution at position B28 where proline is replaced with aspartic acid. This results in a decreased hexamer formation and higher rate of absorption, compared to wild type insulin, following subcutaneous administration. |
| Indication/Disease | For the treatment of Type 1 or 2 diabetes mellitus. Should normally be used in conjunction with an intermediate or long-acting insulin. |
| Pharmacodynamics | Insulin is a natural hormone produced by beta cells of the pancreas. In non-diabetic individuals, a basal level of insulin is supplemented with insulin spikes following meals. Postprandial insulin spikes are responsible for the metabolic changes that occur as the body transitions from a postabsorptive to absorptive state. Insulin promotes cellular uptake of glucose, particularly in muscle and adipose tissues, promotes energy storage via glycogenesis, opposes catabolism of energy stores, increases DNA replication and protein synthesis by stimulating amino acid uptake by liver, muscle and adipose tissue, and modifies the activity of numerous enzymes involved in glycogen synthesis and glycolysis. Insulin also promotes growth and is required for the actions of growth hormone (e.g. protein synthesis, cell division, DNA synthesis). Insulin aspart is a rapid-acting insulin analogue used to mimic postprandial insulin spikes in diabetic individuals. The onset of action of insulin aspart is 10-15 minutes. Its activity peaks 60-90 minutes following subcutaneous injection and its duration of action is 4-5 hours. |
| Mechanism of Action | Insulin aspart binds to the insulin receptor (IR), a heterotetrameric protein consisting of two extracellular alpha units and two transmembrane beta units. The binding of insulin to the alpha subunit of IR stimulates the tyrosine kinase activity intrinsic to the beta subunit of the receptor. The bound receptor autophosphorylates and phosphorylates numerous intracellular substrates such as insulin receptor substrates (IRS) proteins, Cbl, APS, Shc and Gab 1. Activation of these proteins leads to the activation of downstream signaling molecules including PI3 kinase and Akt. Akt regulates the activity of glucose transporter 4 (GLUT4) and protein kinase C (PKC), both of which play critical roles in metabolism and catabolism. In humans, insulin is stored in the form of hexamers; however, only insulin monomers are able to interact with IR. Substitution of the proline residue at B28 with aspartic acid reduces the tendency to form hexamers and results in a faster rate of absorption and onset of action and shorter duration of action. |
| Toxicity | Inappropriately high dosages relative to food intake and/or energy expenditure may result in severe and sometimes prolonged and life-threatening hypoglycemia. Neurogenic (autonomic) signs and symptoms of hypoglycemia include trembling, palpitations, sweating, anxiety, hunger, nausea and tingling. Neuroglycopenic signs and symptoms of hypoglycemia include difficulty concentrating, lethargy/weakness, confusion, drowsiness, vision changes, difficulty speaking, headache, and dizziness. Mild hypoglycemia is characterized by the presence of autonomic symptoms. Moderate hypoglycemia is characterized by the presence of autonomic and neuroglycopenic symptoms. Individuals may become unconscious in severe cases of hypoglycemia. |
| Metabolism | N.A. |
| Absorption | Rapidly absorbed following subcutaneous administration (more so than regular human insulin). Furthermore, insulin aspart has a faster absorption, a faster onset of action, and a shorter duration of action than regular human insulin after subcutaneous injection. It takes 40 - 50 minutes to reach maximum concentration. When a dose of 0.15 U/kg body weight was injected in type 1 diabetes patients, the mean maximum concentration (Cmax) was 82 mU/L. The site of injection has no impact on extent or speed of absorption. |
| Volume of Distribution | N.A. |
| Clearance | 1.2 L/h/kg [healthy Caucasian male] |
| Categories | Hypoglycemic Agents and Antidiabetic Agents |
| Patents Number | N.A. |
| Date of Issue | N.A. |
| Date of Expiry | N.A. |
| Drug Interaction | N.A. |
| Target | N.A. |
| Information of corresponding available drug in the market |
|---|
| Brand Name | NovoLog Mix 70/30 |
| Company | Novo Nordisk |
| Brand Discription | NovoLog Mix 70/30 (insulin aspart protamine and insulin aspart rdna origin) (70% insulin aspart protamine suspension and 30% insulin aspart injection, [rDNA origin]) is a human insulin analog suspension containing 70% insulin aspart protamine crystals and 30% soluble insulin aspart. NovoLog Mix 70/30 is a blood glucoseÂlowering agent with an earlier onset and an intermediate duration of action. Insulin aspart is homologous with regular human insulin with the exception of a single substitution of the amino acid proline by aspartic acid in position B28, and is produced by recombinant DNA technology utilizing Saccharomyces cerevisiae (baker's part (NovoLog) has the empirical formula C256H381N65O79S6 and a molecular weight of 5825.8 Da |
| Prescribed for | NovoLog Mix 70/30 (70% insulin aspart protamine suspension and 30% insulin aspart injection) is indicated as an adjunct to diet and exercise to improve glycemic control in patients with diabetes mellitus. |
| Chemical Name | N.A. |
| Formulation | Inactive ingredients for the 10 mL vial are mannitol 36.4 mg/mL, phenol 1.50 mg/mL, metacresol 1.72 mg/mL, zinc 19.6 μg/mL, disodium hydrogen phosphate dihydrate 1.25 mg/mL, sodium chloride 0.58 mg/mL, and protamine sulfate 0.32 mg/mL. Inactive ingredients for the NovoLog Mix 70/30 (insulin aspart protamine and insulin aspart rdna origin) FlexPen are glycerol 16.0 mg/mL, phenol 1.50 mg/mL, metacresol 1.72 mg/mL, zinc 19.6 μg/mL, disodium hydrogen phosphate dihydrate 1.25 mg/mL, sodium chloride 0.877 mg/mL, and protamine sulfate 0.32 mg/mL. NovoLog Mix 70/30 (insulin aspart protamine and insulin aspart rdna origin) has a pH of 7.20 - 7.44. Hydrochloric acid or sodium hydroxide may be added to adjust pH. |
| Physcial Appearnce | NovoLog Mix 70/30 (insulin aspart protamine and insulin aspart rdna origin) is a uniform, white, sterile suspension that contains insulin aspart 100 Units/mL. |
| Route of Administration | Subcutaneous |
| Recommended Dosage | NovoLog Mix 70/30 (insulin aspart protamine and insulin aspart (rdna origin)) is an insulin analog with an earlier onset and intermediate duration of action in comparison to the basal human insulin premix. The addition of protamine to the rapid-acting aspart insulin analog (NovoLog) results in insulin activity that is 30% short-acting and 70% long-acting. NovoLog Mix 70/30 (insulin aspart protamine and insulin aspart (rdna origin)) is typically dosed on a twice-daily basis (with each dose intended to cover 2 meals or a meal and a snack). The dosage of NovoLog Mix 70/30 (insulin aspart protamine and insulin aspart (rdna origin)) must be individualized. The written prescription for NovoLog Mix 70/30 (insulin aspart protamine and insulin aspart (rdna origin)) should include the full name, to avoid confusion with NovoLog (insulin aspart) and Novolin 70/30 (human premix). |
| Contraindication | NovoLog Mix 70/30 (insulin aspart protamine and insulin aspart (rdna origin)) is contraindicated during episodes of hypoglycemia in patients with hypersensitivity to NovoLog Mix 70/30 (insulin aspart protamine and insulin aspart (rdna origin)) or one of its excipients. |
| Side Effects | signs of insulin allergy: itching skin rash over the entire body, wheezing, trouble breathing, fast heart rate, sweating, or feeling like you might pass out. Hypoglycemia, or low blood sugar, is the most common side effect of insulin. Symptoms include headache, hunger, weakness, sweating, tremors, irritability, trouble concentrating, rapid breathing, fast heartbeat, fainting, or seizure (severe hypoglycemia can be fatal) |
| Useful Link | http://www.novologmix70-30.com/ http://www.drugs.com/pro/novolog-mix-70-30.html http://www.rxlist.com/novolog-mix-70-30-drug.htm |
| PubMed ID | 23512415, 20429049, 19496630, 18076215, 11829732 |
| 3-D Structure | Th1105 A chain (View) or (Download), Th1105 B chain (View) or (Download) |