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| Primary information |
|---|
| ID | 10260 |
| Therapeutic ID | Th1037 |
| Protein Name | Botulinum Toxin Type B |
| Sequence | >Th1037_Botulinum_Toxin_Type_B
MPVTINNFNYNDPIDNNNIIMMEPPFARGTGRYYKAFKITDRIWIIPERYTFGYKPEDFNKSSGIFNRDVCEYYDPDYLNTNDKKNIFLQTMIKLFNRIKSKPLGEKLLEMIINGIPYLGDRRVPLEEFNTNIASVTVNKLISNPGEVERKKGIFANLIIFGPGPVLNENETIDIGIQNHFASREGFGGIMQMKFCPEYVSVFNNVQENKGASIFNRRGYFSDPALILMHELIHVLHGLYGIKVDDLPIVPNEKKFFMQSTDAIQAEELYTFGGQDPSIITPSTDKSIYDKVLQNFRGIVDRLNKVLVCISDPNININIYKNKFKDKYKFVEDSEGKYSIDVESFDKLYKSLMFGFTETNIAENYKIKTRASYFSDSLPPVKIKNLLDNEIYTIEEGFNISDKDMEKEYRGQNKAINKQAYEEISKEHLAVYKIQMCKSVKAPGICIDVDNEDLFFIADKNSFSDDLSKNERIEYNTQSNYIENDFPINELILDTDLISKIELPSENTESLTDFNVDVPVYEKQPAIKKIFTDENTIFQYLYSQTFPLDIRDISLTSSFDDALLFSNKVYSFFSMDYIKTANKVVEAGLFAGWVKQIVNDFVIEANKSNTMDKIADISLIVPYIGLALNVGNETAKGNFENAFEIAGASILLEFIPELLIPVVGAFLLESYIDNKNKIIKTIDNALTKRNEKWSDMYGLIVAQWLSTVNTQFYTIKEGMYKALNYQAQALEEIIKYRYNIYSEKEKSNINIDFNDINSKLNEGINQAIDNINNFINGCSVSYLMKKMIPLAVEKLLDFDNTLKKNLLNYIDENKLYLIGSAEYEKSKVNKYLKTIMPFDLSIYTNDTILIEMFNKYNSEILNNIILNLRYKDNNLIDLSGYGAKVEVYDGVELNDKNQFKLTSSANSKIRVTQNQNIIFNSVFLDFSVSFWIRIPKYKNDGIQNYIHNEYTIINCMKNNSGWKISIRGNRIIWTLIDINGKTKSVFFEYNIREDISEYINRWFFVTITNNLNNAKIYINGKLESNTDIKDIREVIANGEIIFKLDGDIDRTQFIWMKYFSIFNTELSQSNIEERYKIQSYSEYLKDFWGNPLMYNKEYYMFNAGNKNSYIKLKKDSPVGEILTRSKYNQNSKYINYRDLYIGEKFIIRRKSNSQSINDDIVRKEDYIYLDFFNLNQEWRVYTYKYFKKEEEKLFLAPISDSDEFYNTIQIKEYDEQPTYSCQLLFKKDEESTDEIGLIGIHRFYESGIVFEEYKDYFCISKWYLKEVKRKPYNLKLGCNWQFIPKDEGWTE
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| Molecular Weight | 150804 |
| Chemical Formula | C690H1115N177O202S6 |
| Isoelectric Point | NA |
| Hydrophobicity | NA |
| Melting point | NA |
| Half-life | NA |
| Description | Neurotoxin produced by fermentation of clostridium botulinum type B. The protein exists in noncovalent association with hemagglutinin and nonhemagglutinin proteins as a neurotoxin complex. The neurotoxin complex is recovered from the fermentation process. |
| Indication/Disease | To treat patients with cervical dystonia to reduce the severity of abnormal head position and neck pain associated with cervical dystonia. |
| Pharmacodynamics | Botulinum Toxin Type B inhibits acetylcholine release at the neuromuscular junction via a three stage process: 1) Heavy Chain mediated neurospecific binding of the toxin, 2) internalization of the toxin by receptor-mediated endocytosis, and 3) ATP and pH dependent translocation of the Light Chain to the neuronal cytosol where it acts as a zinc-dependent endoprotease cleaving polypeptides essential for neurotransmitter release. |
| Mechanism of Action | Botulinum Toxin Type B binds and cleaves the synaptic Vesicle Associated Membrane Protein (VAMP, also known as synaptobrevin) which is a component of the protein complex responsible for docking and fusion of the synaptic vesicle to the presynaptic membrane, a necessary step to neurotransmitter release. |
| Toxicity | One unit of Botulinum Toxin Type B corresponds to the calculated median lethal intraperitoneal dose (LD50) in mice. |
| Metabolism | NA |
| Absorption | Botulinum Toxin Type B is not expected to be present in the peripheral blood at measurable levels following IM injection at the recommended doses as pharmacokinetic or ADME studies were not performed |
| NA |
| Clearance | NA |
| Categories | Acetylcholine Release Inhibitors, Agents that produce neuromuscular block (indirect), Amino Acids, Peptides, and Proteins, Amphibian Venoms, Anti-Dyskinesia Agents, Bacterial Proteins, Bacterial Toxins, Biological Factors, Botulinum Toxins, Central Nervous System Agents, Central Nervous System Depressants, Cholinergic Agents, Complex Mixtures, Endopeptidases, Enzymes, Enzymes and Coenzymes, Ganglion Blockers, Hydrolases, Membrane Transport Modulators, Metalloendopeptidases, Metalloproteases, Muscle Relaxants, Muscle Relaxants, Peripherally Acting Agents, Musculo-Skeletal System, Neurotoxins, Neurotransmitter Agents, Other Miscellaneous Therapeutic Agents, Peptide Hydrolases, Proteins, Toxins, Biological, Venoms |
| Patents Number | NA |
| Date of Issue | NA |
| Date of Expiry | NA |
| Drug Interaction | NA |
| Target | Vesicle-associated membrane protein 2,Vesicle-associated membrane protein 1,Synaptotagmin-2 |
| Brand Name | Myobloc |
| Company | Solstice Neurosciences |
| Brand Description | Solstice Neurosciences |
| Prescribed For | It is used for reducing the severity of abnormal head position and neck pain associated with a certain neck problem (cervical dystonia) |
| Chemical Name | NA |
| Formulation | It is supplied in 3.5-mL glass vials. Each single-use vial of formulated MYOBLOC contains 5,000 Units of botulinum toxin type B per milliliter in 0.05% human serum albumin, 0.01 M sodium succinate, and 0.1 M sodium chloride at approximately pH 5.6. |
| Physical Appearance | Clear and colorless to light-yellow Sterile injectable solution |
| Route of Administration | Injection |
| Recommended Dosage | The recommended initial dose of MYOBLOC (botulinum toxin type b) for patients with a prior history of tolerating botulinum toxin injections is 2,500 to 5,000 Units divided among affected muscles. Patients without a prior history of tolerating botulinum toxin injections should receive lower initial dose. |
| Contraindication | MYOBLOC is contraindicated in patients with a known hypersensitivity to any botulinum toxin preparation or to any of the components in the formulation and in patients with infection at the proposed injection site |
| Side Effects | Anxiety; back pain; dizziness; drowsiness; dry eyes; dry mouth; flu-like symptoms; headache; increased cough; indigestion; nausea; neck pain; pain, redness, swelling, or tenderness at the injection site; runny nose; sensitivity to light; sweating; upset stomach. |
| Useful Link 1 | Link |
| Useful Link 2 | NA |
| Remarks | NA |