Trichomonas vaginalis: Identification of soluble and membrane-associated phospholipase A<inf>1</inf> and A<inf>2</inf> activities with direct and indirect hemolytic effects

Javier Vargas-Villarreal, Benito David Mata-Cárdenas, Rebeca Palacios-Corona, Francisco González-Salazar, Elva I. Cortes-Gutierrez, Herminia G. Martínez-Rodríguez, Salvador Said-Fernández

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Abstract

A direct hemolytic activity, dependent on phospholipase A (PLA) activity, was located in the particulate subcellular fraction (P30) of Trichomonas vaginalis. We identified soluble direct and indirect hemolytic activities in the spent medium and soluble fraction (S30) of T. vaginalis strain GT-13. Spent medium showed the highest specific indirect hemolytic activity (SIHA) at pH 6.0 (91 indirect hemolytic units [HU]/mg/hr). Spent medium and P30, but not S30, showed direct hemolytic activity. PLA activity was protein dose dependent and time dependent. The highest PLA activity was observed at pH 6.0. All trichomonad preparations showed phospholipase A1 (PLA A1) and phospholipase A2 (PLA A2) activities. Indirect and direct hemolytic activity and PLA A1 and PLA A2 diminished at pH 6.0 and 8.0 with increasing concentrations of Rosenthal's inhibitor. The greatest effect was observed with 80 μM at pH 6.0 on the SIHA of S30 (83% reduction) and the lowest at pH 8.0, also on the SIHA of S30 (26% reduction). In conclusion, T. vaginalis contains particulate and soluble acidic, and alkaline direct and indirect hemolytic activities, which are partially dependent on alkaline or acidic PLA A1 and PLA A2 enzymes. These could be responsible for the contact-dependent and -independent hemolytic and cytolytic activities of T. vaginalis. © American Society of Parasitologists 2005.
Original languageEnglish
Pages (from-to)5-11
Number of pages7
JournalJournal of Parasitology
DOIs
Publication statusPublished - 1 Feb 2005
Externally publishedYes

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phospholipase A1
Phospholipases A1
Trichomonas vaginalis
phospholipase A2
Phospholipases A
Phospholipases A2
membrane
Membranes
inhibitor
enzyme
protein
particulates
Trichomonadida
subcellular fractions
Subcellular Fractions
phospholipases
effect

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Vargas-Villarreal, Javier ; Mata-Cárdenas, Benito David ; Palacios-Corona, Rebeca ; González-Salazar, Francisco ; Cortes-Gutierrez, Elva I. ; Martínez-Rodríguez, Herminia G. ; Said-Fernández, Salvador. / Trichomonas vaginalis: Identification of soluble and membrane-associated phospholipase A<inf>1</inf> and A<inf>2</inf> activities with direct and indirect hemolytic effects. In: Journal of Parasitology. 2005 ; pp. 5-11.
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abstract = "A direct hemolytic activity, dependent on phospholipase A (PLA) activity, was located in the particulate subcellular fraction (P30) of Trichomonas vaginalis. We identified soluble direct and indirect hemolytic activities in the spent medium and soluble fraction (S30) of T. vaginalis strain GT-13. Spent medium showed the highest specific indirect hemolytic activity (SIHA) at pH 6.0 (91 indirect hemolytic units [HU]/mg/hr). Spent medium and P30, but not S30, showed direct hemolytic activity. PLA activity was protein dose dependent and time dependent. The highest PLA activity was observed at pH 6.0. All trichomonad preparations showed phospholipase A1 (PLA A1) and phospholipase A2 (PLA A2) activities. Indirect and direct hemolytic activity and PLA A1 and PLA A2 diminished at pH 6.0 and 8.0 with increasing concentrations of Rosenthal's inhibitor. The greatest effect was observed with 80 μM at pH 6.0 on the SIHA of S30 (83{\%} reduction) and the lowest at pH 8.0, also on the SIHA of S30 (26{\%} reduction). In conclusion, T. vaginalis contains particulate and soluble acidic, and alkaline direct and indirect hemolytic activities, which are partially dependent on alkaline or acidic PLA A1 and PLA A2 enzymes. These could be responsible for the contact-dependent and -independent hemolytic and cytolytic activities of T. vaginalis. {\circledC} American Society of Parasitologists 2005.",
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Trichomonas vaginalis: Identification of soluble and membrane-associated phospholipase A<inf>1</inf> and A<inf>2</inf> activities with direct and indirect hemolytic effects. / Vargas-Villarreal, Javier; Mata-Cárdenas, Benito David; Palacios-Corona, Rebeca; González-Salazar, Francisco; Cortes-Gutierrez, Elva I.; Martínez-Rodríguez, Herminia G.; Said-Fernández, Salvador.

In: Journal of Parasitology, 01.02.2005, p. 5-11.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Trichomonas vaginalis: Identification of soluble and membrane-associated phospholipase A1 and A2 activities with direct and indirect hemolytic effects

AU - Vargas-Villarreal, Javier

AU - Mata-Cárdenas, Benito David

AU - Palacios-Corona, Rebeca

AU - González-Salazar, Francisco

AU - Cortes-Gutierrez, Elva I.

AU - Martínez-Rodríguez, Herminia G.

AU - Said-Fernández, Salvador

PY - 2005/2/1

Y1 - 2005/2/1

N2 - A direct hemolytic activity, dependent on phospholipase A (PLA) activity, was located in the particulate subcellular fraction (P30) of Trichomonas vaginalis. We identified soluble direct and indirect hemolytic activities in the spent medium and soluble fraction (S30) of T. vaginalis strain GT-13. Spent medium showed the highest specific indirect hemolytic activity (SIHA) at pH 6.0 (91 indirect hemolytic units [HU]/mg/hr). Spent medium and P30, but not S30, showed direct hemolytic activity. PLA activity was protein dose dependent and time dependent. The highest PLA activity was observed at pH 6.0. All trichomonad preparations showed phospholipase A1 (PLA A1) and phospholipase A2 (PLA A2) activities. Indirect and direct hemolytic activity and PLA A1 and PLA A2 diminished at pH 6.0 and 8.0 with increasing concentrations of Rosenthal's inhibitor. The greatest effect was observed with 80 μM at pH 6.0 on the SIHA of S30 (83% reduction) and the lowest at pH 8.0, also on the SIHA of S30 (26% reduction). In conclusion, T. vaginalis contains particulate and soluble acidic, and alkaline direct and indirect hemolytic activities, which are partially dependent on alkaline or acidic PLA A1 and PLA A2 enzymes. These could be responsible for the contact-dependent and -independent hemolytic and cytolytic activities of T. vaginalis. © American Society of Parasitologists 2005.

AB - A direct hemolytic activity, dependent on phospholipase A (PLA) activity, was located in the particulate subcellular fraction (P30) of Trichomonas vaginalis. We identified soluble direct and indirect hemolytic activities in the spent medium and soluble fraction (S30) of T. vaginalis strain GT-13. Spent medium showed the highest specific indirect hemolytic activity (SIHA) at pH 6.0 (91 indirect hemolytic units [HU]/mg/hr). Spent medium and P30, but not S30, showed direct hemolytic activity. PLA activity was protein dose dependent and time dependent. The highest PLA activity was observed at pH 6.0. All trichomonad preparations showed phospholipase A1 (PLA A1) and phospholipase A2 (PLA A2) activities. Indirect and direct hemolytic activity and PLA A1 and PLA A2 diminished at pH 6.0 and 8.0 with increasing concentrations of Rosenthal's inhibitor. The greatest effect was observed with 80 μM at pH 6.0 on the SIHA of S30 (83% reduction) and the lowest at pH 8.0, also on the SIHA of S30 (26% reduction). In conclusion, T. vaginalis contains particulate and soluble acidic, and alkaline direct and indirect hemolytic activities, which are partially dependent on alkaline or acidic PLA A1 and PLA A2 enzymes. These could be responsible for the contact-dependent and -independent hemolytic and cytolytic activities of T. vaginalis. © American Society of Parasitologists 2005.

U2 - 10.1645/GE-3338

DO - 10.1645/GE-3338

M3 - Article

SP - 5

EP - 11

JO - Journal of Parasitology

JF - Journal of Parasitology

SN - 0022-3395

ER -