Related Experiment Video
Updated: Feb 4, 2026

Manual Restraint and Common Compound Administration Routes in Mice and Rats
Published on: September 26, 2012
Tocilizumab in Large Vessel Vasculitis - Different Routes of Administration
Marc Schmalzing1, Ottar Gadeholt1, Michael Gernert1
1Focus on Rheumatology / Clinical Immunology, Department of Internal Medicine II, University of Würzburg, 97080 Wurzburg, Germany.
Tocilizumab effectively treats large vessel vasculitis in real-world use, showing acceptable safety despite potential infectious risks. Switching to intravenous administration can help manage relapses in patients on subcutaneous tocilizumab.
Area of Science:
- Rheumatology
- Immunology
- Pharmacology
Background:
- Tocilizumab is increasingly utilized for large vessel vasculitis (LVV).
- Recent approval for giant cell arteritis (GCA) highlights its growing role.
Purpose of the Study:
- To assess tocilizumab's real-world efficacy and safety in LVV.
- To evaluate different administration routes for tocilizumab in LVV.
Main Methods:
- Retrospective analysis of LVV patients treated with tocilizumab.
- Involved patients from a tertiary rheumatology department.
Main Results:
- 11 LVV patients (8 GCA, 2 RA-associated LVV, 1 Takayasu arteritis) received tocilizumab.
- 7 patients achieved remission with low-dose prednisone; 3 relapses occurred under continuous treatment.
- Switching to intravenous tocilizumab resolved relapses in 3 patients.
Conclusions:
- Tocilizumab demonstrates efficacy in real-world LVV management.
- Safety is generally acceptable, though infectious complications require monitoring.
- Intravenous tocilizumab is a viable option for managing subcutaneous treatment relapses.
Related Concept Videos
Routes of Drug Administration: Parenteral
The intravenous route (IV) of drug administration can be further categorized into two types. The bolus injection administers the entire dose rapidly, while an intravenous infusion slowly delivers smaller doses steadily.
The IV route is often...
Routes of Drug Administration: Overview
Enteral administration refers to drugs absorbed through the gastrointestinal tract. They can be swallowed (perorally), placed under the tongue (sublingually), or on the inner lining of the cheeks (buccally). Perorally administered drugs take time to be absorbed and have a slower onset of action. The rectal route is another form of enteral administration, which allows for...
Additional Routes of Drug Administration
Administering drugs via inhalation allows for the direct delivery of gaseous, volatile substances or droplets to different parts of the respiratory tract. One of the advantages of the inhalation route is the rapid absorption of drugs into the circulatory system, which is possible because of the large surface area of...
Routes of Drug Administration: Enteral
Enteral administration involves drug administration via the mouth in two ways: orally or sublingually.
Unlike sublingually drugs, drugs that are taken orally pass through the gastrointestinal (GI) tract and get metabolized by the liver. Once metabolized, the drug is absorbed into the systemic circulation, reaching different body parts via the bloodstream. However, while passing through the stomach,...
Dosage Interval and Administration Route: Determination Methods
Routes of Persuasion

