• Nenhum resultado encontrado

Sao Paulo Med. J. vol.115 número2

N/A
N/A
Protected

Academic year: 2018

Share "Sao Paulo Med. J. vol.115 número2"

Copied!
4
0
0

Texto

(1)

W a ld e n is e C o s s e rm e lli-M e s s in a , W ils o n C o s s e rm e lli

Possible m echanism s of chronic leprosy-related arthritis

M ic ro b ia l a g e n ts in d u c e a rth ritis th ro u g h m e c h a n is m s s u c h a s d ire c t in filtra tio n o f tis s u e a n d b y in d u c in g a u to im m u n e p h e n o m e n a . T h e m e c h a n is m s in v o lv e d in th is la s t ty p e o f a rth ritis h a v e b e e n in v e s tig a te d . In e x p e rim e n ta l m o d e ls o f a d ju v a n t a n d re a c tiv e a rth ritis , th e in v o lv e m e n t o f T c e lls a n d in s o m e c a s e s m y c o b a c te ria in th e d e v e lo p m e n t o f a rth ritis h a v e b e e n c o n firm e d . C ro s s -re a c tiv ity b o e tw e e n th e 6 5 k D m y c o b a c te ria l p ro te in a n d c a rtila g e p ro te o g ly c a n s h a s b e e n p o s tu la te d a s a p o s s ib le m e c h a n is m . In th is s tu d y , c h ro n ic p e rip h e ra l a rth ritis w a s o b s e rv e d in p a tie n ts w ith H a n s e n 's d is e a s e , in p a tie n ts w ith re s o lv e d H a n s e n 's a n d in th o s e w ith p a u c ib a c illa ry fo rm s . T h is a rth ritis w a s n o t re la te d to re a c tio n a l s ta te s (e ry th e m a n o d o s u m le p ro s u m a n d re v e rs a l re a c tio n ), in c o n tra s t to s e v e ra l re p o rts in th e lite ra tu re . T h e m e c h a n is m s b y w h ic h m ic ro b e s c o u ld in d u c e c h ro n ic a rth ritis a re d is c u s s e d h e re in .

U N IT E R M S : M y c o b a c te ria , c e llu la r im m u n ity , h u m o ra l im m u n ity , le p ro s y a rth ritis .

E

m y c o b a c te ria lx p e rim e n ta l in fe c tio n sIn o d e ls h a v ec a n trig g e rsu g g e ste da u to im m u n eth a t a rth ritis, m a in ly th ro u g h T -c e ll m e d ia te d

re sp o n se s. A d ju v a n t a rth ritis, e x p e rim e n ta lly in d u c e d in

ra ts b y th e in tra d e rm a l in je c tio n o f d e a d m y c o b a c te ria (M .

tuberculosis)

su sp e n d e d in m in e ra l o il, p ro d u c e s c h ro n ic

in fla m m a tio n o f th e a rtic u la tio n s in g e n e tic a lly

p re d isp o se d a n im a ls.1 In h u m a n s, a rth ritis h a s b e e n

re p o rte d in p a tie n ts su b m itte d to im m u n o th e ra p y w ith B C G .2

T h e ro le o f m y c o b a c te ria in th e p a th o g e n e sis o f rh e u m a to id a rth ritis a n d o th e r ty p e s o f c h ro n ic

in fla m m a tio n h a s b e e n su g g e ste d p re v io u sly .3 In p a rtic u la r, m y c o b a c te rio a l h e a t-sh o c k p ro te in s h a v e b e e n c o n sid e re d

im p o rta n t ta rg e ts o f th e c e llu la r im m u n e re sp o n se in

p a tie n ts w ith ju v e n ile a rth ritis,4 rh e u m a to id a rth ritis,5 a n d

o f a n tib o d y p ro d u c tio n in rh e u m a to id a rth ritis p a tie n ts.6

T h e 6 5 k D h e a t-sh o c k p ro te in is a n iIn p o rta n t ta rg e t fo r

a rth rito g e n ic T -c e ll c lo n e s, m a in ly th e a m in o a c id se q u e n c e 1 8 0 -1 8 8 .7

P e rip h e ra l b lo o d a n d sy n o v ia l flu id T -Iy m p h o c y te s fro m p a tie n ts w ith rh e u m a to id a rth ritis sh o w e d in c re a se d

re a c tiv ity to a m y c o b a c te ria l fra c tio n th a t c ro ss-re a c te d

A d d re s s fo r c o rre s p o n d e n c e :

W a ld e n is e C o s s e rm e lli-M e s s in a

A v . O r. A rn a ld o , 4 5 5 - 3 ºa n d a r R e u m a to lo g ia S ã o P a u lo /S P - B ra s il- C E P : 0 1 2 4 6 -9 0 3

w ith a rtic u la r c a rtila g e c o n stitu e n ts, e sp e c ia lly in p a tie n ts

w ith 1 -1 0 y e a rs o f d ise a se d u ra tio n . x T h e re sp o n se w a s

c o n sid e re d sp e c ific sin c e th e re w a s n o re a c tiv ity to o th e r

m ito g e n s o r stre p to c o c c a l a n tig e n s, su g g e stin g a d ire c t

re la tio n sh ip b e tw e e n th e m y c o b a c te ria l a n tig e n s a n d th e

p a th o g e n e sis o f rh e u m a to id a rth ritis.

A lte ra tio n in th e a g a la c to sy l im ln u n o g lo b u lin G (Ig G )

m o le c u le w a s o b se rv e d in p a tie n ts w ith tu b e rc u lo sis,

e ry th e m a n o d o su m le p ro su m ,9 C ro h n 's d ise a se , a n d

rh e u ln a to id a rth ritis.lO A g a la c to sy l Ig G is a sso c ia te d w ith

c y to k in e p ro d u c tio n , a c u te p h a se re sp o n se a n d tissu e

in ju ry . lO E le v a tio n o f th is im m u n o g lo b u lin p a ra lle ls w ith

in c re a se d b in d in g o f m y c o b a c te ria l p ro te in s to

im m u n o g lo b u lin s.ll

C h ro n ic a rth ritis h a s b e e n d e sc rib e d in H a n se n 's d ise a se

b u t n o t a sso c ia te d w ith th e p re se n c e o f b a c illi w ith in th e jo in t o r to re a c tio n a l sta te s.1 2 .1 3 .1 4In a p re v io u s stu d y b y o u r g ro u p , 1 5

p e rip h e ra l a rth ritis w a s o b se rv e d in se v e ra l p a tie n ts w ith

H a n se n 's d ise a se . In th e In a jo rity , th e a rth ritis fo llo w e d a

c h ro n ic p a tte rn a n d w a s n o t a sso c ia te d w ith le p ro sy re a c tio n s.

A rth ritis w a s id e n tifie d in p a tie n ts w ith n e g a tiv e b a c illo sc o p y

a n d w ith re so lv e d H a n se n 's d ise a se . P a tie n ts w ith d iffe re n t

fo rm s o f H a n se n 's d ise a se (in d e te rm in a te , d im o rp h o u s,

tu b e rc u lo id a n d le p ro m a to u s) h a d a rth ritis. T h e se d a ta

c o n tra ste d w ith stu d ie s w h e re a rth ritis w a s re la te d a n d

c o n fin e d to e ry th e m a n o d o su m re a c tio n s.

W e h y p o th e siz e d th e p o ssib le m e c h a n ism s in v o lv e d

in th e g e n e ra tio n o f a rth ritis in p a tie n ts w ith p a u c ib a c illa ry

(2)

form s, w ith resolved H ansen's disease and w ithout

reaction. In addition, the long duration of the articular

m anifestation suggested that som ehow it has been

.perpetuated.

Pathogenic m echanism s sim ilar to those of adjuvant

arthritis m ay be involved in the chronic articular

phenom ena in H ansen's disease, particularly if the

hom ology betw een M . leprae and M . tuberculosis is

considered. In adjuvant arthritis, the ceIlular im m une

response to m ycobacterial antigens has been detected, and

is probably involved in the developm ent of arthritis.16The

identification of the 65 kD a protein as the m ain target of

T-ceIl m ediated responses,I7.IX its cross-reaetivity to

purified cartilage proteoglycans, 19including in rheum atoid .

arthritis,20 has em phasized its im portanee in arthritis during

m ycobacterial infections, and possibly in chronic

leprosy-related arthritis. The 65 kD a protein is an im m unodom inant

target for T-celI responses in H ansen's disease, and shares

hom ology w ith the hum an 60 kD a protein.21 The response

to bacterial antigens stim ulates T-eell clones that m ay cross

react w ith intrinsic com ponents ofthe joints in susceptible

individuaIs.

The auto-antibodies generated in H ansen's dIsease

are considered natural antibodies w ith low affinity, and

therefore their possible participation in the pathogenic

m echanislTIS of chronic leprosy-related 'arthritis is

im probable. In our study, no correlation w as found betw een

auto-antibodies and arthritis.

A Ithough the hum oral response w as not considered

an im portant m echanism for defense or for the clinicaI

m anifestations ofH ansen's disease, it m ay indicate that B ceIls had been activated as part of the netw ork of im m une

aIterations occurring during m ycobacteria recognition. In

H ansen's disease, auto-antibodies are low -affinity

antibodies and m ay only be im portant w hen form ing im m unocom plexes. Tubercle bacilli have been considered

potentadjuvants for induction of polyclonal B lym phocytes acti vation. 22 In addition, no cross-reaction w as observed

betw een the 70 kD a m ycobacterial protein and hum an

structures.23 The polyclonal B -cell activation in

leprom atous leprosy is probably a consequence of cytokine

production by T lym phocytes.

Perpetuation of arthritis m ay be due to the persistence of antigens' inside the joints or to the hom ing of the

continually activated T lym phocytes,24 as dem onstrated in

adjuvant arthritis and inflam m atory arthritis. In particular,

1407

it has been show n that w hen 65 kD a specific- T

lym phocytes m igrate to the joint, articular lym phocytes

are responsible for the continuation of the im m une

response, m ainly because these celIs are m em ory cells. 17.24

M astocytes m ay also be able to am plify the response w ithin

the joint in chronic arthritis.25 In reactive arthritis, an

augm ented T-cell response w as detected in

synovial-derived cells w hen com pared to peripheral blood ceIls

responses, dem onstrating a local activation of T celIs, IXor

m igration of chronically activated ceIls.

Several patients w ith H ansen's disease and chronic

arthritis required specific treatlTIent for the articular

m anifestations, such as chloroquine or sulfasalazine.'5

Therapeutic resuIts w ere very good and in m any patients,

sym ptom s disappeared even after drug use had been

interrupted. Inhibition of the antigen presentation by

chloroquine m ay be one of the possible m echanism s by

w hich this drug am eliorates M . leprae-induced arthritis.

The presence of arthritis in all types of H ansen's

disease and in patients w ithout reactions em phasizes that

the contact w ith the bacilli m ay trigger chronic

im m unological responses' in genetically.predisposed

individuaIs. Indeed, chronic synovitis w as den10nstrated

in biopsies of patients w ith active H ansen's disease and

during reaction, indicating that chronic inflam m ation m ay

occur parallel to acute m anifestations.26 PO W ELL and

SW A N 27 also deteeted chronic inflam m atory infiltrates and

fibrom atous' reaction in bone tissue of H ansen's disease

patients.

R O O K clarified the im m unological pathw ays by

w hich slow -grow ing bacteria m ay induce and perpetuate

chronic arthritis, such as m ycobacterial infections.2X In

brief, invading bacteria activate T lym phocytes w hich

release IY lTIphokines chronically. Those lym phokines

activate B lym phocytes to produce agalactosyl

im m unoglobulins. In addition, bacterial antigens stim ulate

autoreactive clones that m ay induce im m une responses

m ediated by antibodies or by T-cells. It is believed that

local im m une responses also occur in addition to the

hom ing of sensitized T lym phocytes to the joint.

Studies of the m echanism s involved in arthritic

m anifestation in infectious diseases m ay clarify the

possible pathw ays by w hich chronic inflam m atory diseases

are induced, and suggest new therapeutical options, such

as peptide-based im m unotherapy.29

M E S S IN A , W .C .; C O S S E R M E L L I, W . - P o s s ib le m e c h a n is m s o f c h r o n ic le p r o s y - r e la te d a r th r itis

(3)

1408

REFERENCES

1 . P earso n C M . D ev elo p m en t o f arth ritis, p eriarth ritis an d

p erio stitis in rats g iv en ad ju v an ts. P ro c S o c E x p B io l N ew

Y o rk 1 9 5 6 ;9 5 -1 0 1 .

2 . T o risu M , M iy ah ara T , S h in o h ara N , O h sato K , S o n o zak i H .

A n ew sid e effect o f B C G im m u n o th erap y : B C G in d u ced

arth ritis in m an o C an cer Im m u n o I 1 9 7 8 ;5 :7 7 -8 3 .

3 . L y d y ard P M , R o o k G A W , T so u lfa G ,. S h arifM , S m ith M . Is

th ere a ro le fo r m y co b acteria in th e etio p ath o g en esis o f

rh eu m ato id arth ritis? Im m u n o l R ev iew s 1 9 9 1 ; 1 2 1 : 1 3 7 -5 4 .

4 . D e G raeff-M eed er E r, V an D er Z ee R , R ijk ers G T , et aI.

R eco g n itio n o f h u m an 6 0 k D h eat sh o ck p ro tein b y

m o n o n u clear cells fro m p atien ts w ith ju v en ile ch ro n ic

arth ritis. L an cet 1 9 9 1 ;3 3 7 : 1 3 6 8 -7 2 .

5 . L i S G , Q u ay le A J, S h en Y , et aI. M y co b acteria an d h u m an

h eat sh o ck p ro tein -sp ecific cy to to x ic T Iy m p h o cy tes in

rh eu m at< ?id sy n o v ial in flam m atio n . A rth r R h eu m

1 9 9 2 ;3 5 :2 7 0 -8 1 .

6 . B ah r G m M R o o k G A W , A I-S affar M , V an E m b d en JD A ,

S tan fo rd JL , B eh b eh an i K . A n an aly sis o f an tib o d y lev eis to

m y co b acteria in relatio n to H L A ty p e: E v id en ce fo r n o n

-H L A -lin k ed h ig h lev eIs o f an tib o d y to th e 6 5 k D h eat sh o ck

p ro tein o f M . tu b ercu lo sis in rh eu m ato id arth ritis. C lin E x p Im m u n o I 1 9 8 9 ;7 4 :2 1 1 -5 .

7 . V an E d en W , T h o le Jer, V an D er Z ee R , et aI. C lo n in g o f th e m y co b acteriaI ep ito p e reco g n ized b y T ly m p h o cy tes in

ad ju v an t arth ritis. N atu re 1 9 8 8 ;3 3 1 : 1 7 1 -3 .

8 . H o lo sh itz J, K lajm an A , D ru ck er I, et aI. T Iy m p h o cy tes o f

rh eu m ato id arth ritis p atien ts sh o w au g m en ted reactiv ity to a

fractio n o f m y co b acteria cro ss-reactiv e w ith cartilag e. L an cet

1 9 8 6 ;9 :3 0 5 -9 .

9 . F illey E , A n d reo li A , S teele J, et aI. A tran sien t rise in

ag alacto sy l Ig G co rrelatin g w ith free IL -2 recep to rs d u rin g

ep iso d es o f ery th em a n o d o su m lep ro su m . C lin E x p Im m u n o l

1 9 8 9 ;7 6 :3 4 3 -7 .

1 0 . R o o k G . R h eu m ato id arth ritis, m y co b acterial an tig en s an d

ag alacto sy l Ig G . S can d J Im m u n o l 1 9 8 8 ;2 8 :4 8 7 -9 3 ".

1 1 . R o o k G , L y d y ard P , S tan fo rd JL . M y co b acteria an d

rh eu m ato id arth ritis. A rth R h eu m 1 9 9 0 ;3 3 (3 ):4 3 1 -5 .

1 2 . A tk in S L , E I-G h o b arey A , K am el M , O w en Jp , D ick W C .

C lin icaI an d lab o rato ry stu d ies o f arth ritis in H an sen 's

d isease. B rit M ed J 1 9 8 9 ;2 9 8 : 1 4 2 3 -5 .

1 3 . A tk in S L , E I-G h o b arey A , K am eI M , O w en Jp , D ick W C .

C lin icai an d lab o rato ry stu d ies in p atien ts w ith Iep ro sy an d

en th esitis. A n n R h eu m D is 1 9 9 0 ;4 9 :7 1 5 -7 .

1 4 . A tk in S L , W elb u ry R R , S tan field E , B eav is D , Iw ais B , D ick

W C . C lin icaI an d lab o rato ry stu d ies o f in flam m ato ry

p o ly arth ritis in p atien ts w ith Iep ro sy in P ap u a N ew G u in ea.

A n n R h eu m D is 1 9 8 7 ;4 6 :6 8 8 -9 0 .

1 5 . C o sserm eIli-M essin a W . A b o rd ag em reu m ato ló g ica n a

h an sen íase - D issertação d e M estrad o , F acu ld ad e d e M ed icin a

d a U S P , 1 9 9 2 .

1 6 . W h iteh o u se M W . R at p o ly arth ritis: In d u ctio n w ith ad ju v an ts

co n stitu ted w ith m y co b acteria (an d o iIs) fro m th e

en v iro n m en t. J R h eu m ato I 1 9 9 2 ;9 :4 9 4 -5 0 1 .

1 7 . G asto n JS H , L ife P F , B ailey L C , B aco n P A . In v itro resp o n ses

to a 6 5 k ilo d alto n m y co b acteriaI p ro tein b y sy n o v iaI T cells

fro m in flam m ato ry arth ritis p atien ts. J Im m u n o l

1 9 8 9 ; 1 4 3 (8 ):2 4 9 4 -5 0 0 .

1 8 . G asto n JS H , L ife P A , G ran fo rs K , et aI. S y n o v ial T

ly m p h o cy te reco g n itio n o f o rg an ism s th at trig g er reactiv e

arth ritis. J E x p M ed 1 9 8 9 ;7 6 :3 4 8 -5 3 .

1 9 . V an E d en W , H o lo sh itz J, N ev o Z , F ren k eI A , K lajm an ,

C o h en IR . A rth ritis in d u ced b y a T -Iy m p h o cy te clo n e th at

resp o n d s to m y co b acteriu m tu b ercu lo sis an d to cartilag e

p ro teo g ly can s. P ro c N atI A cad S ci U S A 1 9 8 5 ;8 2 :5 1 1 7 -2 0 .

2 0 . Q u ay le A J, W ilso n K B , L i S G , et aI. P ep tid e reco g n itio n , T

-cell recep to r u sag e an d H L A restrictio n elem en ts o f h u m an

(4)

1409

heat-shock protein (hsp) 60 and mycobacterial 65-kDa

hsp-reactive T'-cell clones from rheumatoid synovial fluido Eur J

Immunol 1992;22: 1315-1322.

21. McuIloch J, Lydard PM, Rook GAW. Rheumatoid arthritis:

How do the theories fit the evidence. Clin Exp Immunol

1993;92: 1-6.

22. Winfield JB. Stress proteins, arthritis, and autoimmunity.

Arthr Rheum 1989;32:1497-1504.

23. Davenport MP, McKenzie KR, Basten A, Britton WJ. The

variable C-terminal region of the mycobacterium leprae

70-kilodalton heat shock protein is the target for humoral

immune responses. Infect Immunity 1992;60(3): 1170-7.

24. Dejoy SQ, 'Perguson-Chanowitz K, Oronsky AL, Zabriskie

JB, Kerwar SS. Studies on the homing of

mycobacterium-sensitized T-Iymphocytes to the synovium during passive

adjuvant arthritis. Cell Immunol 1990; 130: 195-203.

25. Mican JA, Metcalfe DD. Arthritis and mast cell activation. J

Allergy Clin Immunol 1990;86(4):677-83.

26. Holla VV, Kenetkar MV, Kolhatkar MK, Kulkarin CN.

Leprous synovitis: A study offifty cases. Int J Lepr Mycobact

Dis 1983;5:29-32.

27. Powell CS, Swan LL. Leprosy pathologic changes observed in

fifty consecutive necropsies. Am J PathoI1955;31:1131-47.

28. Rook G, Stanford JL. Slow bacterial infections or

autoimmunity? Immunol Today 1992; 13(5): 160-4.

29. Yang XD, Gasser J, Peige U. Prevention of adjuvant arthritis

in rats by a nonapeptide from the 65 kD mycobacterial

heat-shock protein. Clin Exp Immunol 1990;81: 189-194.

M E S S I N A , W . C . ; C O S S E R M E L L I , w . -P o s s ib le m e c h a n is m s o f c h r o n ic le p r o s y - r e la t e d a r t h r it is

Referências

Documentos relacionados

O objetivo geral deste projeto é apoiar a Secretaria de Telecomunicações (SETEL) do Ministério da Ciência, Ministério da Ciência, Tecnologia, Inovações e

Método microbiológico não apresenta resposta igual para os vitâmeros, mede apenas o valor total. Método CLAE não mede todos os vitâmeros de

Observando a Figura 12 podemos concluir que o método de Gram-Schmidt realmente funciona muito bem neste caso, haja vista que a referência utilizada no método, isto é, o espectro

O Secullum Checkin é um aplicativo para computadores, tablets, smartphones ideal para quem procura otimizar o controle de acesso com um baixo

Para caracterização da lesão foi realizada uma primeira RM da coluna vertebral que demonstrou a existência de imagens compatíveis com espondilodiscite, com atingimento do disco L1/L2

Sabendo que um fragmento tem massa m e se desloca para a direita com velocidade constante v, calcule a velocidade que deve ter o outro fragmento, cuja massa é 3 m, para que o

2.1 Poderão concorrer às vagas oferecidas no presente Edital, alunos regularmente matriculados e que estejam comprovadamente frequentando cursos de graduação presencial ou

Evento em Nova Iorque: especialistas discutem sobre cirurgia bariátrica e metabólica Dr. Ricardo Cohen, presidente da SBCBM: foco nos pacientes com obesidade leve..