Advances in Clinical and Experimental Medicine

Title abbreviation: Adv Clin Exp Med
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ISSN 1899–5276 (print)
ISSN 2451-2680 (online)
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Advances in Clinical and Experimental Medicine

2012, vol. 21, nr 5, September-October, p. 581–589

Publication type: original article

Language: English

Cross-Protection Among Unrelated Leptospira Pathogens Serovars: An Unfinished Story

Odporność krzyżowa u niepowiązanych serotypów Leptospira – niedokończona opowieść

Luis A. Rosario1,A,B,C,D,E,F, Daniel F. Arencibia2,A,B,C,D,E,F, Yolanda E. Suarez3,C,E,F, Juan F. Infante2,C,E,F, Bárbara Y. Valdés2,B,C, Niurka Batista2,A,B,C,D,E,F

1 Institute of Pharmacy and Food Science, University of Havana, Havana, Cuba

2 Finlay Institute, Havana, Cuba

3 Veterinary Medicine Faculty, Agrarian University of Havana (UNAH), Mayabeque, Cuba


Background. The World Health Organization considers leptospirosis the most neglected zoonotic disease in the last decades. One of the major obstacles in the developing of vaccines for the prevention of leptospirosis is the absence of cross-protection among unrelated serovars. It is accepted that cross-protection among related serovars is due to antibodies generated against lipopolysaccharides (LPs), whereas a cross-protection among unrelated serovars is rarely observed.
Objectives. The objective of the study was to ascertain the existence of cross-protection among vaccine strains of different serovars.
Results. The results of this research demonstrated that a cross-protection among unrelated Leptospira serovars strain is possible. The Canicola strain is able to induce protection against homologous, Ballum and Copenhageni strains. The Mozdok strain induced protection only against a homologous challenge. Other strains showed a moderate cross-protection against a heterologous challenge.
Conclusion. These findings suggest that the Canicola and Mozdok strains are ideal candidates for developing a new vaccine formulation for use in Cuba.


Wprowadzenie. Światowa Organizacja Zdrowia uważa leptospirozę za najbardziej lekceważoną chorobę odzwierzęcą w ostatnich dziesięcioleciach. Jedną z głównych przeszkód w rozwoju szczepionek zapobiegających leptospirozie jest brak odporności krzyżowej wśród niepowiązanych serotypów. Przyjmuje się, że odporność krzyżowa wśród powiązanych serotypów wynika z przeciwciał wytworzonych przeciwko lipopolisacharydom (LPs), a wśród niepowiązanych serotypów odporność krzyżowa występuje rzadko.
Cel pracy. Ustalenie, czy odporność krzyżowa występuje między szczepionkami opartymi na szczepach różnych serotypów.
Wyniki. Badania wykazały, że odporność krzyżowa wśród niepowiązanych szczepów serotypów Leptospira jest możliwa. Szczep L. canicola jest w stanie wywołać odporność przed szczepami homologicznymi, Ballum i Copenhageni. Szczep L. mozdok wywołał odporność tylko przed homologicznym szczepem. Inne szczepy wykazały umiarkowaną odporność krzyżową przed heterologicznym wyzwaniem.
Wnioski. Wyniki badań sugerują, że szczepy L. canicola i L. mozdok są idealnymi kandydatami na składnik nowej szczepionki do użytku na Kubie.

Key words

Leptospira, leptospirosis, cross-protection, vaccine, Mesocricetus auratus

Słowa kluczowe

Leptospira, leptospiroza, odporność krzyżowa, szczepionka, Mesocricetus auratus

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