Feline chronic lymphocytic plasmacytic gingivostomatitis

I am very keen to find a cure for this condition. If you are a veterinary surgeon and would like to take part in an email discussion group, please email draddie@catvirus.com and put "FGS email group" in the subject. I am especially keen right now to hear whether any of you have used cimetidine (Tagamet) in treatment of this condition and to learn which foods you have used successfully.

Ebook "My Cat Has Feline Chronic Gingivostomatitis - What Now?" written for cat guardians.

The chapters are:

1. What is feline chronic gingivostomatitis?
2. What causes feline chronic gingivostomatitis?
3. How is feline chronic gingivostomatitis treated?
4. What you can do to help your cat recover from feline chronic gingivostomatitis.
5. If your cat dies.
6. Feline chronic gingivostomatitis and the cat breeder.
7. Feline chronic gingivostomatitis and the cat rescuer.
8. Glossary of weird and technical terms.
9. What you can do in the fight against feline chronic gingivostomatitis.
10. Useful websites.
11. Information factsheet to take to your veterinary surgeon.

You can buy this ebook instantly by downloading the free sample copy (but you can only pay in US dollars). If you buy using the buttons below, there will be a delay of up to 24 hours until you will be manually sent a download link, so please be patient. Please note that the download is an .exe file, so you may have to disable your computer's security programme or firewall.

Download an e-book on feline infectious upper respiratory disease and feline chronic lymphocytic plasmacytic gingivostomatitis (note this e-book is only for undergraduate and postgraduate veterinary surgeons, especially those studying for feline or small animal medicine certificates or for continuing professional development. The e-book is not worded for non-veterinarians). In addition to everything contained on this webpage, the e-book contains tables of differential diagnoses, a section about infectious respiratory disease control in catteries, details about feline vaccination and treatment, the truth about azithromycin, notes on less common upper respiratory infections of the cat and more extensive lists of references and websites for further reading.

Purchase feline upper respiratory infection and FGS e-book

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In humans, chronic gingivostomatitis can be due to intolerance to food ingredients (e.g cinammon) or additives, especially those of chewing gum or the fizzy Scottish drink, Irn Bru. Just before Lucky, the cat described in the case report below, dramatically improved, his food had been changed to the additive-free Classic Cat Food. I believe that the food change aided his recovery and have several anecdotal reports from veterinary surgeons of similar responses to this food.

Definitive diagnosis of feline chronic lymphocytic plasmacytic gingivostomatitis is by biopsy. Diagnosis of feline calicivirus can be performed with an oropharyngeal swab. Virus isolation is still the diagnostic test of choice for this virus because of genetic variability of the virus (so some reverse-transcriptase polymerase chain reaction (RT-PCR) tests will give false negative results). However, virus isolation is not available in all countries.

This list is unfortunately nowhere near complete and I apologise if your country is missed. Scandinavian countries usually send their samples to Companion Animal Diagnostics in Scotland, UK.

France - Scanelis laboratory, which is attached to the Ecole Nationale Veterinaire Toulouse - for quantitative RT-polymerase chain reaction to detect FCV.

UK - Companion Animal Diagnostics, University of Glasgow Veterinary School - who perform virus isolation. Telephone them on 0141 330 5777 or email Companion, to order viral transport media, swabs and sample submission forms. Their charge is £13.00 plus VAT. You may also wish to send a biopsy of the lesion in 10% formol saline (from £18.00 plus VAT).

USA - In America, the feline calicivirus RT-qPCR test which I would recommend you use is available from the Lucy Whittier Molecular and Diagnostic Core Facility. You can download a sample submission form from the website.

The treatment with the highest reported success rate for this condition remains complete removal of all teeth and especially the roots by a specialised veterinary dentist. A good veterinary dentist can achieve cure rates as high as 80%. However, this procedure is not without risk: Smith et al (2003) report penetration of the eyeball in 3 cats and 2 dogs following dentistry, with subsequent loss of the eye. And of course general anaesthetics always carry a risk too. Not surprisingly, many owners would prefer to try conservative treatment first.

Conservative treatment is aimed at using a non-allergenic food, restoring normal mouth flora (healthy cat's mouths have predominantly Pasteurella multocida, 50% of cats with stomatitis have spirochaetes), trying to eliminate FCV, and shifting the immune response back to type 1. For the latter, it is not a good idea to use corticosteroids, but a non-steroidal anti-inflammatory safe for use in the cat (e.g. Metacam). Thalidomide is ideal, since it is safe, anti-inflammatory, and shifts the immune response from Th1 to Th2, but it is now virtually impossible for veterinary surgeons to source it. Cimetidine is being recognised to stimulate the Th1 response, and may be worth trying, it certainly shouldn't do any harm. To my knowledge, it has never yet been used to treat this condition.

Corticosteroids are absolutely contraindicated because of the high rate of diabetes mellitus development following long term therapy, the risk of obesity and because whilst they appear to help the cat initially, there is a bounce-back effect - with the cat re-presenting with worse clinical signs than initially and requiring higher and higher doses just to maintain. Corticosteroids suppress both humoral and cell-mediated immunity, reducing the cat's chance of clearing the infection, and cause thinning of the epithelium.

The treatment I currently recommend is as follows: Metacam (continually, or until complete healing), Antirobe for 6 weeks (or on alternative weeks - week on, week off), Classic cat food (continually or until complete healing), 1MU Virbagen Omega per kg every other day subcutaneously for 5 injections, thereafter monitor clinical progress and give injections as required. Individual cats require differing regimes of Virbagen Omega injections - some every other day, others only once a week, others recover completely and no longer require injections. Submucosal injections of Virbagen Omega are reported to give good results. See below for more details.

Download information factsheet for veterinary surgeons (an at-a-glance summary of treatments I recommend) in a new window. Continue on for more detailed information.

NOT Metronidazole 4-6 weeks (metronidazole has a suppressant effect on cell mediated immunity in mice, and may be less desirable in this condition where CMI is preferable to the humoral response).

Feline interferon: Virbac make feline recombinant interferon (Virbagen Omega). Note that feline interferon omega should always be stored in the fridge and will remain viable once reconstituted for up to 21 days at 4oC.

Subgingival use: A dose of 1 million units (0.2ml of a 5 million unit vial, 0.1ml of a 10 million unit vial) locally into the junction between healthy gum and diseased gum given when the cat is anaesthetised has been reported to have excellent results (Camy 2004, Mihaljevic 2004, Southerden 2006). However, some cats require more than one treatment and if they are poor anaesthetic risks an alternative may be preferable.

Subcutaneous injections: 1 MU/kg, or 0.1 ml/kg of the reconstituted solution, once every other day for 5 treatments. Thereafter attempt to reduce dosage to twice a week, provided the cat is still doing well. Discontinue treatment only after three attempts to isolate calicivirus have been negative (these can be at weekly intervals). We find monitoring the cat's weight a useful objective way of assessing response to treatment.

Human interferons: - (feline interferon is preferable if available) - Intron A (human recombinant interferon) obtained as 3M I.U. from local pharmacist (write a prescription). Dilute in one litre of saline, aliquot into 1ml volumes, freeze for up to a year. Defrost as required, dilute 1:100 to get 30 I.U. per millilitre, keep refrigerated for up to a week. Treat continually, until FCV shedding ceases.

Corticosteroids should be AVOIDED because although the cat may improve initially, ultimately the condition will worsen or become more chronic. For preference, use non-steroidal anti-inflammatories.

Metacam
Meloxicam (Metacam, Boehringer Ingelheim) is preferable to steroids in the control of this condition. In our study, both controls and the IFN omega group were put onto Metacam.

Thereafter reduce the dose until you find the minimum that keeps the cat comfortable: most cats will maintain on 1-2 drops per cat per day.

At present, we are unable to source thalidomide in the UK and are putting all of our cases onto Metacam.

Thalidomide is a good anti-inflammatory to use in this condition but is difficult to obtain. If you do manage to get it, remember to explain to the owner that thalidomide is not licensed for the cat.

Food is a very important feature in this condition. Most affected cats improve on Classic Cat Food (a tinned and pouch food made by Butcher's, available in Safeway, Pets at Home and other supermarkets and British pet food shops) and metacam alone. Lucky, the cat in the case study reported below, had just been changed to Classic Cat Food prior to his recovery. (For local suppliers of Classic food or for buying in bulk, phone Butchers on 01788 823711.) In addition, after dentistry, cats fed on Hills a/d diet gained more weight and had smaller lesions than those fed on a control diet (Theyse et al, 2003). A diet of Wild Kitty Cat Food (an American cat food) cured one cat in 1-2 months. I currently recommend a change to any of these foods for cats suffering from this condition.

I am often asked what can people use in countries which do not have Classic food, or for cats who do not like Classic.

Applaws natural cat food is a delicious cat food which is useful for cats whose mouth is so sore that it has affected their appetite. In addition, one recovered cat who occasionally drools (salivates excessively) stops doing so on being given Applaws (but not tuna flavour).

Phone Roger Coleman on 08707 508 606 for a sample or order from the website: mpm products.

I would be keen to hear from any veterinarians who have experience of using these, or other, foods to control feline chronic gingivostomatitis.

Antioxidants such as vitamins A, C and E and zinc improve mucous membrane health and possibly have anti-viral and/or immune stimulant activities. One has to be careful of using vitamin A in the cat for 2 reasons: first the cat can't absorb or convert well the beta-carotene forms (i.e. those found in plant foods), so it must be given in the form of liver or fish oil (halibut or cod), secondly, vitamin A SHOULD NOT be used for more than 6 weeks or there is a risk of hypervitaminosis A and bone deposition. Also be aware that long term use of vitamin C in the cat can predispose to oxalate crystalluria.

Doses:
vitamin A: 200-400 i.u./kg/day for less than 6 weeks
vitamin C: 125mg/cat bid
vitamin E: 25-75 i.u./cat/bid
zinc: 7-10mg/cat/sid

UK vet, David Leicester, reports some response to slippery elm in honey applied directly to the lesions. This herb is used widely by humans with inflammatory bowel disease and has been shown to have antioxidant effects on mucosae in vitro.

"Phytoplex Slippery Elm" produced by: Animal Alternatives, PO Box 289, Richmond, Surrey, TW10 7HX, England, UK. I must stress that I have no association whatsoever with this company and am not on a commision (though perhaps I should be!! ;-))

Each tablet contains: 400.0mg Slippery Elm Bark; 0.001ml Cinnamon Oil BP; 0.001ml Clove Oil BP; 0.001ml Peppermint Oil BP.

This formulation is actually sold as a digestive remedy for a plethora of GIT problems in dogs and cats.

The manufacturers claim no contraindications and the further research I have done appears to support this.

For the topical treatment of oral inflammation and ulcers I have been grinding up a single tablet and mixing with c5ml of honey. This pasty mixture is then syringe directly onto the affected areas at regular intervals throughout the day. It is very well tolerated and as I reported previously seems to work wonders in a very short period of time. I postulate that at least part of the response is due to the local anaesthetic effect of the oil components and possibly also the antiseptic effects of the honey, I'd be interested to hear if anyone has any thoughts on this matter.

I have seen 2 cats in the last 3 years develop diabetes mellitus from the chronic use of long acting steroid preparations for this problem and will not use them unless it's going to be euthanased otherwise. I have always tried to get them onto tablets in the past to allow alternate day therapy but with limited success. I am now using a combination of occasional steroid +/- antibiotic courses (usu Antirobe- clindamycin but sometimes Stomorgyl- metronidazole/spiramycin), xrays/dental and root extractions, lysine for viral related cases, chlorhexidine mouth washes and slippery elm in honey. If anyone is still trying to find Slippery Elm then try health food shops or over the internet, or you could always give Animal Alternatives a call as that's where I get mine. There must be plenty of other companies making it though as its widely recommended in human herbalist books for gut problems."

Tel.: 0751 – 363140
Fax.: 0751 – 3631414
E-Mail: mail@tierklinik-rv.de
www.tierklinik-rv.de/

Dr Johann Kotze
Roodekruin Veterinary Clinic
Gauteng
South Africa
Tel: (011) 764 6262
Email: johann.vet@gmail.com

Albert Lloret
Service of internal medicine
Hospital Clinic Veterinari (Vet Teaching Hospital)
Universitat Autonoma de Barcelona
Barcelona, Spain
tel +34935811894
fax +34935813428

1.Cecilia Gorrel runs a dental clinic at Cedar Vet Group
81 Victoria Road
Ferndown
Dorset
BH22 9HU
UK

Phone: personal assistant, Sue, on 02380 891900
Phone: 01202 861622
Fax: 01202 861622
www.doctoothfairy.com
www.cedarvets.com

2. Alex J Smithson
Veterinary Dental, Oral & Maxillofacial Referrals
alex@orosurgeon.co.uk
07887 650812
NW England

Clinics at-
PetMedics, Worsley, Manchester 0161 794 4999

(ask for Hazel, 16.00-22.00)

Manchester Street Veterinary Surgery, Oldham, Lancs 0161 624 4596
Chestergate Referrals, Cheshire, 01244853823

4. Gerhard Putter BVSc MRCVS
Mulberry Court Veterinary Surgery
171-173 Melford Road
Sudbury
Suffolk
CO10 1JU

Tel: 01787 881888
Fax:01787 880689
E mail: gerhard@mulberryvets.co.uk
Web Site: www.mulberryvets.co.uk

Lucky is a MN DSH. He was referred to Dr Diane Addie by his veterinary surgeon, Mr Gerry Henry, who had extracted most of his teeth (the treatment of choice for this condition). Mr Henry had also treated Lucky with extensive broad spectrum antibiotics and on referral, Lucky had only a sparse culture of Moraxella. Lucky was negative for FeLV and FIV, but feline calicivirus (FCV) was isolated. Treatment was begun with 50 mg thalidomide sid and 200 mg lactoferrin powder (kindly donated by Ko Shiino, Morinaga Foods, Germany) applied directly to the lesions daily.

Sep 2000 Lucky has now improved considerably. He has stopped shedding FCV. He has been changed to Butcher's Classic Cat Food, which I believe to be highly significant.

May 2001. Lucky is 100% recovered and is still FCV negative. Dec 2002 - Lucky still has a healthy mouth!

Camy G. 2004 A clinical case of feline chronic gingivitis-stomatitis. Veterinary Interferon Handbook. Ed. Karine de Mari. Virbac 94-99

Mihaljevic S. 2004 Management of a clinical case of severe gingivo-stomatitis in a cat and its treatment based on feline omega interferon. Veterinary Interferon Handbook. Ed. Karine de Mari. Virbac 100-103

Smith MM, Smith EM, La Croix N, Mould J. Orbital penetration associated with tooth extraction. J Vet Dent. 2003 Mar;20(1):8-17.

Theyse LFH, Logan EI, Picavet P. 2003. Partial extraction in cats with gingivitis-stomatitis-pharyngitis complex - beneficial effects of a recovery food. Proceedings Hill's European Symposium on Oral Care. Amsterdam 2003 64-65

Feline chronic lymphocytic plasmacytic stomatitis/gingivitis