Kozo Fujisaki

ELECTRON MICROSCOPIC OBSERVATION OF THE INVASION PROCESS OF CRYPTOSPORIDIUM PARVUM IN SEVERE COMBINED IMMUNODEFICIENCY MICE (2005)

Rika Umemiya, Minoru Fukuda, Kozo Fujisaki, Toshihiro Matsui

Cryptosporidium parvum mainly invades the intestinal epithelium and causes watery diarrhea in humans and calves. However, the invasion process has not yet been clarified. In the present study, the...

Detection of Antibodies to Neospora caninum in Cattle by Enzyme-Linked Immunosorbent Assay with Truncated NcSRS2 Expressed in Escherichia coli (2005)

Irungu Gaturaga, Bayin Chahan, Xuenan Xuan, Xiaohong Huang, Min Liao, Shinya Fukumoto, ...

The surface antigen 1–related sequence 2 of Neospora caninum (NcSRS2) is considered as an immunodominant antigen. In this study, the gene encoding truncated NcSRS2 (NcSRS2t) lacking an N-terminal...

TICKCIDAL EFFECT OF MONOCLONAL ANTIBODIES AGAINST HEMOCYTES, OM21, IN AN ADULT FEMALE TICK, ORNITHODOROS MOUBATA (ACARI: ARGASIDAE) (2004)

Tomohide Matsuo, Noboru Inoue, Martin R. Ruheta, DeMar Taylor, Kozo Fujisaki

In the present study, monoclonal antibodies (mAbs) against adult Ornithodoros moubata hemocytes were established. Afterward, artificial feeding was performed to assess the tickcidal effect of fetal...

SERODIAGNOSIS OF CANINE BABESIA GIBSONI INFECTION BY ENZYME-LINKED IMMUNOSORBENT ASSAY WITH RECOMBINANT P50 EXPRESSED IN ESCHERICHIA COLI (2004)

Shinya Fukumoto, Yukiko Sekine, Xuenan Xuan, Ikuo Igarashi, Chihiro Sugimoto, Hideyuki Nagasawa, ...

The entire P50 gene encoding a surface protein of Babesia gibsoni was cloned into the bacteria expression vector pGEX-4T-3 and subsequently expressed in Escherichia coli as a glutathione...

Clotrimazole, Ketoconazole, and Clodinafop-propargyl as Potent Growth Inhibitors of Equine Babesia Parasites During In Vitro Culture (2003)

Sabine Bork, Naoaki Yokoyama, Tomohide Matsuo, Florencia G. Claveria, Kozo Fujisaki, Ikuo Igarashi

The antifungal agents clotrimazole (CLT) and ketoconazole (KC) and the herbicide clodinafop-propargyl (CP) inhibit growth of Plasmodium sp., Toxoplasma sp., and Trypanosoma sp. In the present study,...

Immune Responses of Interferon Gamma (IFN-γ) Knock Out Mice to Repeated Haemaphysalis longicornis (Acari: Ixodidae) Nymph Infestations (2002)

Badgar Battsetseg, Kamilius Mamiro, Noboru Inoue, Levi Makala, Hideyuki Nagasawa, Yoichiro Iwakura, ...

To investigate the immunological mechanisms of acquired resistance to tick infestation, interferon gamma (IFN-γ) deficient mice (IFN-γ −/− mice) were used to assess interleukin-4 (IL-4) and...

Characterization of Phagocytic Hemocytes in Ornithodoros moubata (Acari: Ixodidae) (2001)

Noboru Inoue, Kayoko Hanada, Naotoshi Tsuji, Ikuo Igarashi, Hideyuki Nagasawa, Takeshi Mikami, ...

Effects of fetal bovine serum (FBS) and complement on phagocytic activity in Ornithodoros moubata (Murray 1877) hemocytes and protease activity in the hemocytes were examined. At least three...

Cloning and Expression of a 48-Kilodalton Babesia caballi Merozoite Rhoptry Protein and Potential Use of the Recombinant Antigen in an Enzyme-Linked Immunosorbent Assay

Ikadai, Hiromi, Xuan, Xuenan, Igarashi, Ikuo, Tanaka, Shigeyasu, Kanemaru, Takumi, Nagasawa, Hideyuki, ...

A cDNA expression library prepared from Babesia caballi merozoite mRNA was screened with a monoclonal antibody BC11D against the rhoptry protein of B. caballi merozoite. A cDNA encoding a 48-kDa...

Expression of Babesia equi Merozoite Antigen 1 in Insect Cells by Recombinant Baculovirus and Evaluation of Its Diagnostic Potential in an Enzyme-Linked Immunosorbent Assay

Xuan, Xuenan, Larsen, Alejandra, Ikadai, Hiromi, Tanaka, Tetsuya, Igarashi, Ikuo, Nagasawa, Hideyuki, ...

The gene encoding the entire Babesia equi merozoite antigen 1 (EMA-1) was inserted into a baculovirus transfer vector, and a recombinant virus expressing EMA-1 was isolated. The expressed EMA-1 was...

Identification and Expression of a 50-Kilodalton Surface Antigen of Babesia gibsoni and Evaluation of Its Diagnostic Potential in an Enzyme-Linked Immunosorbent Assay

Fukumoto, Shinya, Xuan, Xuenan, Nishikawa, Yoshifumi, Inoue, Noboru, Igarashi, Ikuo, Nagasawa, Hideyuki, ...

A cDNA expression library prepared from Babesia gibsoni merozoite mRNA was screened with B. gibsoni-infected dog serum. cDNA encoding a 50-kDa protein was cloned and designated the P50 gene. The...

Characterization of Neospora caninum Surface Protein NcSRS2 Based on Baculovirus Expression System and Its Application for Serodiagnosis of Neospora Infection

Nishikawa, Yoshifumi, Kousaka, Yuko, Tragoolpua, Khajornsak, Xuan, Xuenan, Makala, Levi, Fujisaki, Kozo, ...

The baculovirus expression system has proved to be a useful tool for the production of recombinant proteins. Here we have characterized the Neospora caninum surface protein NcSRS2 produced by two...

Detection of Antibodies to Babesia equi in Horses by a Latex Agglutination Test Using Recombinant EMA-1

Xuan, Xuenan, Igarashi, Ikuo, Tanaka, Tetsuya, Fukumoto, Shinya, Nagasawa, Hideyuki, Fujisaki, Kozo, ...

A latex agglutination test (LAT) using recombinant equi merozoite antigen 1 (EMA-1) for the detection of antibodies to Babesia equi was developed. The LAT was able to differentiate very clearly...

Characterization of Toxoplasma gondii SAG2 Expressed in Insect Cells by Recombinant Baculovirus and Evaluation of Its Diagnostic Potential in an Enzyme-Linked Immunosorbent Assay

Huang, Xiaohong, Xuan, Xuenan, Suzuki, Hiroshi, Sugimoto, Chihiro, Nagasawa, Hideyuki, Fujisaki, Kozo, ...

A baculovirus carrying the SAG2 gene of Toxoplasma gondii was constructed, and recombinant SAG2 protein (S-rSAG2) was expressed in insect cells. S-rSAG2 was recognized by sera from cats and pigs...

Cloning of a Truncated Babesia equi Gene Encoding an 82-Kilodalton Protein and Its Potential Use in an Enzyme-Linked Immunosorbent Assay

Hirata, Haruyuki, Ikadai, Hiromi, Yokoyama, Naoaki, Xuan, Xuenan, Fujisaki, Kozo, Suzuki, Naoyoshi, ...

To isolate Babesia equi genes encoding immunodominant proteins, a cDNA expression library prepared from B. equi mRNA was immunoscreened with B. equi-infected horse serum. Eighteen positive cDNA...

Identification of a Specific Antigenic Region of the P82 Protein of Babesia equi and Its Potential Use in Serodiagnosis

Hirata, Haruyuki, Xuan, Xuenan, Yokoyama, Naoaki, Nishikawa, Yoshifumi, Fujisaki, Kozo, Suzuki, Naoyoshi, ...

The efficacy of the Be82 gene product fused with glutathione S-transferase (GST/Be82) in an enzyme-linked immunosorbent assay (ELISA) for the diagnosis of Babesia equi infection was reported...

High-Level Expression and Purification of a Truncated Merozoite Antigen-2 of Babesia equi in Escherichia coli and Its Potential for Immunodiagnosis

Huang, Xiaohong, Xuan, Xuenan, Yokoyama, Naoaki, Xu, Longshan, Suzuki, Hiroshi, Sugimoto, Chihiro, ...

The gene encoding a truncated merozoite antigen-2 (EMA-2t) of Babesia equi was cloned and highly expressed in Escherichia coli as a glutathione S-transferase fusion protein (G-rEMA-2t). Both...

Growth-Inhibitory Effects of Artesunate, Pyrimethamine, and Pamaquine against Babesia equi and Babesia caballi in In Vitro Cultures

Nagai, Akiko, Yokoyama, Naoaki, Matsuo, Tomohide, Bork, Sabine, Hirata, Haruyuki, Xuan, Xuenan, ...

Three antimalarial drugs, artesunate, pyrimethamine, and pamaquine, were evaluated for their growth-inhibitory effects against Babesia equi and Babesia caballi in in vitro culture. B. equi was more...

High-Level Expression of Truncated Surface Antigen P50 of Babesia gibsoni in Insect Cells by Baculovirus and Evaluation of Its Immunogenicity and Antigenicity

Fukumoto, Shinya, Xuan, Xuenan, Kadota, Kimie, Igarashi, Ikuo, Sugimoto, Chihiro, Fujisaki, Kozo, ...

Previously, we identified an immunodominant antigen, P50 of Babesia gibsoni. In the present study, the gene encoding the truncated P50 (rP50t) without a C-terminal hydrophobic region (29 amino acids...

Molecular Cloning of a Babesia caballi Gene Encoding the 134-Kilodalton Protein and Evaluation of Its Diagnostic Potential in an Enzyme-Linked Immunosorbent Assay

Tamaki, Yoh, Hirata, Haruyuki, Takabatake, Noriyuki, Bork, Sabine, Yokoyama, Naoaki, Xuan, Xuenan, ...

A Babesia caballi gene encoding the 134-kDa (BC134) protein was immunoscreened with B. caballi-infected horse serum. An enzyme-linked immunosorbent assay (ELISA) using recombinant BC134 protein could...

Inhibitory Effect of Antiserum to Surface Antigen P50 of Babesia gibsoni on Growth of Parasites in Severe Combined Immunodeficiency Mice Given Canine Red Blood Cells

Fukumoto, Shinya, Xuan, Xuenan, Takabatake, Noriyuki, Igarashi, Ikuo, Sugimoto, Chihiro, Fujisaki, Kozo, ...

The inhibitory effect of an antiserum to surface protein P50 of Babesia gibsoni on the growth of the parasite was determined with severe combined immunodeficiency mice given canine red blood cells....

Cloning of a Novel Babesia equi Gene Encoding a 158-Kilodalton Protein Useful for Serological Diagnosis

Hirata, Haruyuki, Yokoyama, Naoaki, Xuan, Xuenan, Fujisaki, Kozo, Suzuki, Naoyoshi, Igarashi, Ikuo

In this study, we characterized a Babesia equi Be158 gene obtained by immunoscreening a B. equi cDNA expression phage library with B. equi-infected horse serum. The Be158 gene consists of an open...

Development of Rapid Immunochromatographic Test with Recombinant NcSAG1 for Detection of Antibodies to Neospora caninum in Cattle

Liao, Min, Zhang, Shoufa, Xuan, Xuenan, Zhang, Guohong, Huang, Xiaohong, Igarashi, Ikuo, ...

An immunochromatographic test (ICT) with recombinant surface antigen 1 of Neospora caninum (NcSAG1) was developed for the rapid detection of antibodies to N. caninum in cattle. The ICT was used to...

Cloning and Expression of a 48-Kilodalton Babesia caballi Merozoite Rhoptry Protein and Potential Use of the Recombinant Antigen in an Enzyme-Linked Immunosorbent Assay

Ikadai, Hiromi, Xuan, Xuenan, Igarashi, Ikuo, Tanaka, Shigeyasu, Kanemaru, Takumi, Nagasawa, Hideyuki, ...

A cDNA expression library prepared from Babesia caballi merozoite mRNA was screened with a monoclonal antibody BC11D against the rhoptry protein of B. caballi merozoite. A cDNA encoding a 48-kDa...

Expression of Babesia equi Merozoite Antigen 1 in Insect Cells by Recombinant Baculovirus and Evaluation of Its Diagnostic Potential in an Enzyme-Linked Immunosorbent Assay

Xuan, Xuenan, Larsen, Alejandra, Ikadai, Hiromi, Tanaka, Tetsuya, Igarashi, Ikuo, Nagasawa, Hideyuki, ...

The gene encoding the entire Babesia equi merozoite antigen 1 (EMA-1) was inserted into a baculovirus transfer vector, and a recombinant virus expressing EMA-1 was isolated. The expressed EMA-1 was...

Identification and Expression of a 50-Kilodalton Surface Antigen of Babesia gibsoni and Evaluation of Its Diagnostic Potential in an Enzyme-Linked Immunosorbent Assay

Fukumoto, Shinya, Xuan, Xuenan, Nishikawa, Yoshifumi, Inoue, Noboru, Igarashi, Ikuo, Nagasawa, Hideyuki, ...

A cDNA expression library prepared from Babesia gibsoni merozoite mRNA was screened with B. gibsoni-infected dog serum. cDNA encoding a 50-kDa protein was cloned and designated the P50 gene. The...

Characterization of Neospora caninum Surface Protein NcSRS2 Based on Baculovirus Expression System and Its Application for Serodiagnosis of Neospora Infection

Nishikawa, Yoshifumi, Kousaka, Yuko, Tragoolpua, Khajornsak, Xuan, Xuenan, Makala, Levi, Fujisaki, Kozo, ...

The baculovirus expression system has proved to be a useful tool for the production of recombinant proteins. Here we have characterized the Neospora caninum surface protein NcSRS2 produced by two...

Detection of Antibodies to Babesia equi in Horses by a Latex Agglutination Test Using Recombinant EMA-1

Xuan, Xuenan, Igarashi, Ikuo, Tanaka, Tetsuya, Fukumoto, Shinya, Nagasawa, Hideyuki, Fujisaki, Kozo, ...

A latex agglutination test (LAT) using recombinant equi merozoite antigen 1 (EMA-1) for the detection of antibodies to Babesia equi was developed. The LAT was able to differentiate very clearly...

Characterization of Toxoplasma gondii SAG2 Expressed in Insect Cells by Recombinant Baculovirus and Evaluation of Its Diagnostic Potential in an Enzyme-Linked Immunosorbent Assay

Huang, Xiaohong, Xuan, Xuenan, Suzuki, Hiroshi, Sugimoto, Chihiro, Nagasawa, Hideyuki, Fujisaki, Kozo, ...

A baculovirus carrying the SAG2 gene of Toxoplasma gondii was constructed, and recombinant SAG2 protein (S-rSAG2) was expressed in insect cells. S-rSAG2 was recognized by sera from cats and pigs...

Cloning of a Truncated Babesia equi Gene Encoding an 82-Kilodalton Protein and Its Potential Use in an Enzyme-Linked Immunosorbent Assay

Hirata, Haruyuki, Ikadai, Hiromi, Yokoyama, Naoaki, Xuan, Xuenan, Fujisaki, Kozo, Suzuki, Naoyoshi, ...

To isolate Babesia equi genes encoding immunodominant proteins, a cDNA expression library prepared from B. equi mRNA was immunoscreened with B. equi-infected horse serum. Eighteen positive cDNA...

Identification of a Specific Antigenic Region of the P82 Protein of Babesia equi and Its Potential Use in Serodiagnosis

Hirata, Haruyuki, Xuan, Xuenan, Yokoyama, Naoaki, Nishikawa, Yoshifumi, Fujisaki, Kozo, Suzuki, Naoyoshi, ...

The efficacy of the Be82 gene product fused with glutathione S-transferase (GST/Be82) in an enzyme-linked immunosorbent assay (ELISA) for the diagnosis of Babesia equi infection was reported...

High-Level Expression and Purification of a Truncated Merozoite Antigen-2 of Babesia equi in Escherichia coli and Its Potential for Immunodiagnosis

Huang, Xiaohong, Xuan, Xuenan, Yokoyama, Naoaki, Xu, Longshan, Suzuki, Hiroshi, Sugimoto, Chihiro, ...

The gene encoding a truncated merozoite antigen-2 (EMA-2t) of Babesia equi was cloned and highly expressed in Escherichia coli as a glutathione S-transferase fusion protein (G-rEMA-2t). Both...

Growth-Inhibitory Effects of Artesunate, Pyrimethamine, and Pamaquine against Babesia equi and Babesia caballi in In Vitro Cultures

Nagai, Akiko, Yokoyama, Naoaki, Matsuo, Tomohide, Bork, Sabine, Hirata, Haruyuki, Xuan, Xuenan, ...

Three antimalarial drugs, artesunate, pyrimethamine, and pamaquine, were evaluated for their growth-inhibitory effects against Babesia equi and Babesia caballi in in vitro culture. B. equi was more...

High-Level Expression of Truncated Surface Antigen P50 of Babesia gibsoni in Insect Cells by Baculovirus and Evaluation of Its Immunogenicity and Antigenicity

Fukumoto, Shinya, Xuan, Xuenan, Kadota, Kimie, Igarashi, Ikuo, Sugimoto, Chihiro, Fujisaki, Kozo, ...

Previously, we identified an immunodominant antigen, P50 of Babesia gibsoni. In the present study, the gene encoding the truncated P50 (rP50t) without a C-terminal hydrophobic region (29 amino acids...

Molecular Cloning of a Babesia caballi Gene Encoding the 134-Kilodalton Protein and Evaluation of Its Diagnostic Potential in an Enzyme-Linked Immunosorbent Assay

Tamaki, Yoh, Hirata, Haruyuki, Takabatake, Noriyuki, Bork, Sabine, Yokoyama, Naoaki, Xuan, Xuenan, ...

A Babesia caballi gene encoding the 134-kDa (BC134) protein was immunoscreened with B. caballi-infected horse serum. An enzyme-linked immunosorbent assay (ELISA) using recombinant BC134 protein could...

Inhibitory Effect of Antiserum to Surface Antigen P50 of Babesia gibsoni on Growth of Parasites in Severe Combined Immunodeficiency Mice Given Canine Red Blood Cells

Fukumoto, Shinya, Xuan, Xuenan, Takabatake, Noriyuki, Igarashi, Ikuo, Sugimoto, Chihiro, Fujisaki, Kozo, ...

The inhibitory effect of an antiserum to surface protein P50 of Babesia gibsoni on the growth of the parasite was determined with severe combined immunodeficiency mice given canine red blood cells....

Cloning of a Novel Babesia equi Gene Encoding a 158-Kilodalton Protein Useful for Serological Diagnosis

Hirata, Haruyuki, Yokoyama, Naoaki, Xuan, Xuenan, Fujisaki, Kozo, Suzuki, Naoyoshi, Igarashi, Ikuo

In this study, we characterized a Babesia equi Be158 gene obtained by immunoscreening a B. equi cDNA expression phage library with B. equi-infected horse serum. The Be158 gene consists of an open...

Development of Rapid Immunochromatographic Test with Recombinant NcSAG1 for Detection of Antibodies to Neospora caninum in Cattle

Liao, Min, Zhang, Shoufa, Xuan, Xuenan, Zhang, Guohong, Huang, Xiaohong, Igarashi, Ikuo, ...

An immunochromatographic test (ICT) with recombinant surface antigen 1 of Neospora caninum (NcSAG1) was developed for the rapid detection of antibodies to N. caninum in cattle. The ICT was used to...

Babesial Vector Tick Defensin against Babesia sp. Parasites▿ †

Tsuji, Naotoshi, Battsetseg, Badgar, Boldbaatar, Damdinsuren, Miyoshi, Takeharu, Xuan, Xuenan, Oliver, James H., ...

Antimicrobial peptides are major components of host innate immunity, a well-conserved, evolutionarily ancient defensive mechanism. Infectious disease-bearing vector ticks are thought to possess...

A Cysteine Protease Is Critical for Babesia spp. Transmission in Haemaphysalis Ticks

Tsuji, Naotoshi, Miyoshi, Takeharu, Battsetseg, Badger, Matsuo, Tomohide, Xuan, Xuenan, Fujisaki, Kozo

Vector ticks possess a unique system that enables them to digest large amounts of host blood and to transmit various animal and human pathogens, suggesting the existence of evolutionally acquired...