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Methods of treating chronic pain

a technology of chronic pain and anti-cancer antibody, which is applied in the field of anti-cancer antibody, can solve the problems of no beneficial or protective function, both classes of drugs can produce severe side effects, and invalidate 2.7 million people in the uk due to chronic pain conditions

Inactive Publication Date: 2013-11-07
TEVA PHARMACEUTICALS INTERNATIONAL GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is about using an antibody to prevent and treat chronic pain. The medicament is made to be injected into the periphery of the patient. The anti-CGRP antagonist antibody is effective in treating the symptoms of chronic pain. It works by targeting a specific protein called CGRP, which plays a role in transmitting pain signals in the body. The antibody blocks the action of CGRP, reducing pain. The medicament can be injected directly into the spine or other areas where pain is often felt. This approach can provide more targeted pain relief and may reduce the need for opioid drugs, which have their own risks and side effects.

Problems solved by technology

It serves no beneficial or protective function and an estimated 2.7 million people in the UK are invalided due to chronic pain conditions.
Both classes of drugs can produce severe side-effects; NSAIDS can cause gastric ulceration and renal damage, opiates can cause nausea, constipation, confusion and dependency problems.
Opioids fail to produce pain relief in all individuals suffering chronic pain, even at high doses and development of analgesic resistance to opioids complicates their utility for long term therapy.
In particular cancer pain treatment requires the use of unacceptably high levels of opiates bringing with it side-effects and at least 20% of treated patients still have uncontrolled pain.

Method used

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  • Methods of treating chronic pain
  • Methods of treating chronic pain
  • Methods of treating chronic pain

Examples

Experimental program
Comparison scheme
Effect test

example 1

Set Up of the Rodent Cancer Mechanistic Pain Model

[0159]Tumour cells used are syngeneic MRMT-1 rat mammary gland carcinoma cells donated from the Novartis Institute (London). The cells are cultured in RPMI 1640 (Gibco) with 10% foetal bovine serum (FCS), 1% L-glutamine 2% penicillin / streptomycin (Gibco). Two brief washes are carried out with 0.1% w / v trypsin to release those cells which adhere to the flask, and then quenched with an equal volume of 10% FCS, followed by centrifugation of the solution for 3 minutes at 1200 rpm. The pellet is washed and resuspended in Hanks medium, and the concentration of cells calculated using a Haemocytometer, with trypan blue staining to determine the number of dead MRMT-1 cells. The final concentration of 3×103 cells was then obtained by diluting the solution according to the number of cells seen. The final solution was kept on ice until time of injection.

[0160]Male Sprague-Dawley rats weighing close to 170 g at time of surgery were used to genera...

example 2

Assessment of Rodent Anti-CGRP Antibody G2 in the Cancer Pain Model

[0161]Testing behaviour towards mechanical stimuli uses von Frey filaments (North Coast Medical Inc., USA) to the plantar surface of both the ipsilateral and contralateral hindpaw. The rats were placed in a Perspex cubicle with a mesh floor and allowed to acclimatise for 10 minutes. Each von Frey was applied 10 times to each hindpaw alternating between the ipsilateral and contralateral, for duration of 2-3 seconds each time. Von Frey Filaments used have bending forces of 1, 5, 9 and 15 g, and a period of 5 minutes was left between ascending von Frey forces. A nocifensive response (a lift) is defined as a brisk withdrawal of the hindpaw and the number of lifts for each paw at each von Frey are recorded (maximum of 10) and expressed as a percentage response.

[0162]An assessment of the efficacy of rodent anti-CGRP antibody G2 in attenuating hypersensitivity to a wide variety of static mechanical, cooling and integrated s...

example 3

Rota Rod Test for Motor Impairment

[0167]A further end point tested in the bone cancer pain model was ambulation (by rotarod). The test is to obtain a measurement of locomotor impairment comparing antibody treated with control animals, each subjected to the same test under the same conditions. The rota rod test consists of 4 rotateable drums divided by flanges with a motor-driven drum accelerated (Ugo Basile, Comerio, Va., Italy). For a given trial, a rat is placed on the rotating rod and the rotation speed is accelerated from 4 to 16 rpm in 2 min. The time of maximal performance is typically set at 120 sec. Each animal generally receives three trials per day, at 1 hr intervals, for several consecutive days post surgery. The latency to fall off the rod is represented as mean of the three trials.

[0168]No differences were found between the antibody G2 group and the vehicle group in the latency to fall from the rotarod during forced ambulation (FIG. 3). This suggests that G2 does not im...

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PUM

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Abstract

The invention relates to an anti-CGRP antibody for use in the prevention and / or treatment of chronic pain and / or symptoms of chronic pain, and to a method of treating and / or preventing chronic pain and / or symptoms of chronic pain using an anti-CGRP antibody.

Description

[0001]This application is a continuation of U.S. patent application Ser. No. 13 / 623,206 filed on Sep. 20, 2012, which is a divisional of U.S. patent application Ser. No. 12 / 920,621 (now U.S. Pat. No. 8,293,239), which is a National Stage Application under 35 U.S.C. §371 of PCT / IB2009 / 050852, filed on Mar. 3, 2009, which claims the benefit of U.S. Patent Application No. 61 / 033,558, filed on Mar. 4, 2008.REFERENCE TO SEQUENCE LISTING[0002]The instant application contains a Sequence Listing which has been submitted in ASCII format via EFS-Web and is hereby incorporated by reference in its entirety. The sequence listing contains no new matter. Said ASCII copy, created on May 7, 2013, is named 44306-702-302-Sequencelist.txt and is 27 Kilobytes in size.FIELD OF THE INVENTION[0003]The invention relates to an anti-CGRP antibody for use in the prevention and / or treatment of chronic pain and / or symptoms of chronic pain, and to a method of treating and / or preventing chronic pain and / or symptom...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K39/395A61K45/06
CPCA61K39/3955A61K45/06C07K16/18A61K2039/505C07K2317/565A61P19/08A61P21/00A61P25/00A61P25/04A61P29/00A61P35/00A61P35/02A61P43/00C07K16/26C07K2317/21C07K2317/24C07K2317/56C07K2317/76C07K2317/92C07K2317/94C07K2317/34C07K2317/51
Inventor POULSEN, KRISTIAN TODDSHELTON, DAVID LOUISZELLER, JOERGMACHIN, IANCORRADINI, LAURA
Owner TEVA PHARMACEUTICALS INTERNATIONAL GMBH
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