Psoriasis and inflammatory bowel disease (IBD)
are multifactorial chronic immuno-inflamma-
tory potentially disabling disorders with similar
genetic factors and immunological pathways,
in particular, genetic polymorphisms of IL-23R,
which determines the signal IL-12/23-mediated
pathway of immunopathogenesis. The emer-
gence of genetically engineered biological
agents has changed the prognosis for both pso-
riasis and IBD. The intersection of the therapeutic
spectrum in psoriasis and IBD is a very important
point when choosing the management strategy
for these patients. Infliximab and adalimumab
are effective in the treatment of psoriasis, pso-
riatic arthritis, Crohn's disease, ulcerative colitis
(evidence level 1A). Ustekinumab demonstrates
effectiveness in the treatment of psoriasis, pso-
riatic arthritis (evidence level 1A) and Crohn's
disease (evidence level 1B). Etanercept and
secukinumab have been shown to be effective
against psoriasis, psoriatic arthritis (evidence
level 1A) and ineffective and even associated
with exacerbation risk in Crohn's disease and
ulcerative colitis. Inhibition of regulatory cyto-
kines IL-12/23 also has a number of advantages
compared to the blockade of effector cytokines
(TNF-α, IL-17) due to potentially long-term and
stable treatment results and less frequent ad-
ministration.
Key words: biologic therapy, IL-12, IL-23, immu-
notherapy, inflammatory bowel diseases, Crohn's
disease, psoriasis, psoriatic arthritis, monoclonal
antibody, ustekinumab
For citation: Kruglova LS, Lvov AN, Kagramanova AV,
Knyazev OV. Psoriasis and inflammatory bowel
diseases: pathogenetic pathways and the choice
of biologic therapy (a literature review). Almanac
of Clinical Medicine. 2019;47(6):568–78. doi:
10.18786/2072-0505-2019-47-062.
Received 6 August 2019; revised 1 November 2019;
accepted 5 November 2019; published online
13 November 2019
1
Central State Medical Academy of the Presidential
Administration of the Russian Federation; 19/1A
Marshala Timoshenko ul., Moscow, 121359, Russian
Federation
2
Moscow Scientific and Practical Center of
Dermatovenereology and Cosmetology;
17 Leninskiy prospekt, Moscow, 119071, Russian
Federation
3
Loginov Moscow Clinical Scientific Center, Moscow
Healthcare Department; 86 Shosse Entuziastov,
Moscow, 111123, Russian Federation
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