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Crystal Koh

Dr.

Former affiliation
  • 866 Citations
  • 13 h-Index
19932017
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Research Output 1993 2017

  • 866 Citations
  • 13 h-Index
  • 21 Article
  • 3 Review article
  • 1 Chapter
2017
4 Citations (Scopus)

Altered blood cytokines, CD4 T cells, NK and neutrophils in patients with obstructive sleep apnea

Said, E. A., Al-Abri, M. A., Al-Saidi, I., Al-Balushi, M. S., Al-Busaidi, J. Z., Al-Reesi, I., Koh, C. Y., Hasson, S. S., Idris, M. A., Al-Jabri, A. A. & Habbal, O., Oct 1 2017, In : Immunology Letters. 190, p. 272-278 7 p.

Research output: Contribution to journal › Article

Obstructive Sleep Apnea
Neutrophils
Cytokines
T-Lymphocytes
Natural Killer Cells
2016
3 Citations (Scopus)

A potential inhibitory profile of liver CD68+ cells during HCV infection as observed by an increased CD80 and PD-L1 but not CD86 expression

Said, E. A., Al-Reesi, I., Al-Riyami, M., Al-Naamani, K., Al-Sinawi, S., Al-Balushi, M. S., Koh, C. Y., Al-Busaidi, J. Z., Idris, M. A. & Al-Jabri, A. A., Apr 1 2016, In : PLoS One. 11, 4, e0153191.

Research output: Contribution to journal › Article

Liver
hepatocytes
Infection
infection
liver
2 Citations (Scopus)

Frequency of TLR4 (1063A/G and 1363C/T) polymorphisms in healthy and HIV-infected Omani individuals and their relationship to viral load and T cell count

Said, E. A., Al-Yafei, F., Zadjali, F., Al-Balushi, M. S., Hasson, S. S., Al-Mahroqi, S. H., Koh, C. Y., Al-Naamani, K., Al-Busaidi, J. Z., Idris, M. A., Balkhair, A. & Al-Jabri, A. A., Apr 4 2016, In : Genetics and Molecular Research. 15, 2, 15027671.

Research output: Contribution to journal › Article

CD4 Lymphocyte Count
Viral Load
Single Nucleotide Polymorphism
Cell Count
HIV
13 Citations (Scopus)

Increased CD86 but Not CD80 and PD-L1 expression on liver CD68+ cells during chronic HBV infection

Said, E. A., Al-Reesi, I., Al-Riyami, M., Al-Naamani, K., Al-Sinawi, S., Al-Balushi, M. S., Koh, C. Y., Al-Busaidi, J. Z., Idris, M. A. & Al-Jabri, A. A., Jun 1 2016, In : PLoS One. 11, 6, e0158265.

Research output: Contribution to journal › Article

Liver
hepatocytes
Infection
infection
T-cells
2014
16 Citations (Scopus)

Association of single-nucleotide polymorphisms in TLR7 (Gln11Leu) and TLR9 (1635A/G) with a higher CD4T cell count during HIV infection

Said, E. A., Al-Yafei, F., Zadjali, F., Hasson, S. S., Al-Balushi, M. S., Al-Mahruqi, S., Koh, C. Y., Al-Naamani, K., Al-Busaidi, J. Z., Idris, M. A., Balkhair, A. & Al-Jabri, A. A., 2014, In : Immunology Letters. 160, 1, p. 58-64 7 p.

Research output: Contribution to journal › Article

HIV Infections
Single Nucleotide Polymorphism
Cell Count
Genotype
HIV
1 Citation (Scopus)

Connaissances, attitudes et comportements souhaités concernant le dépistage du VIH et l'autoprotection: Une enquête auprès de femmes enceintes omanaises

Translated title of the contribution: Knowledge, attitudes and intended behaviours towards HIV testing and self-protection: a survey of Omani pregnant womenAl-Jabri, A. A., Youssef, R. M., Hasson, S. S., Al-Belushi, M., Balkhair, A. A., Al-Saadoon, M., Mathew, M., Al-Mahroqi, S., Said, E., Koh, C. Y. & Idris, M. A., Oct 1 2014, In : Eastern Mediterranean Health Journal. 20, 10, p. 614-622 9 p.

Research output: Contribution to journal › Article

Pregnant Women
HIV
Oman
Disclosure
Antiviral Agents

Genetic diversity and prevalence of CCR2-CCR5 gene polymorphisms in the Omani population

Al-Mahruqi, S. H., Zadjali, F., Beja-Pereira, A., Koh, C. Y., Balkhair, A. & Al-Jabri, A. A., 2014, In : Genetics and Molecular Biology. 37, 1, p. 7-14 8 p.

Research output: Contribution to journal › Article

Alleles
Haplotypes
Population
Genes
Indian Ocean
2 Citations (Scopus)

New genetic variants in the CCR5 gene and the distribution of known polymorphisms in Omani population

Al-Mahruqi, S. H., Zadjali, F., Koh, C. Y., Balkhair, A., Said, E. A., Al-Balushi, M. S., Hasson, S. S. & Al-Jabri, A. A., Feb 2014, In : International Journal of Immunogenetics. 41, 1, p. 20-28 9 p.

Research output: Contribution to journal › Article

CCR Receptors
Population
Genes
Chemokines
Ethnic Groups
2012

The importance of autoantibodies in the etiology, pathogenesis and diagnosis of autoimmune diseases

Al-Jabri, A. A., Said, E., Koh, C., Al-Buloshi, M. S. & Hasson, S. S., 2012, Autoantibodies: Detection, Pathogenicity and Health Implications. Nova Science Publishers, Inc., p. 109-135 27 p.

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Autoantibodies
Autoimmune Diseases
Rheumatoid Arthritis
Inflammation
Antibodies
2005
8 Citations (Scopus)

Lack of correlation between an assay used to determine early marrow allograft rejection and long-term chimerism after murine allogeneic bone marrow transplantation: Effects of marrow dose

Koh, C. Y., Welniak, L. A. & Murphy, W. J., Apr 2005, In : Biology of Blood and Marrow Transplantation. 11, 4, p. 252-259 8 p.

Research output: Contribution to journal › Article

Chimerism
Homologous Transplantation
Bone Marrow Transplantation
Allografts
Bone Marrow
2003
31 Citations (Scopus)

NK-cell purging of leukemia: Superior antitumor effects of NK cells H2 allogeneic to the tumor and augmentation with inhibitory receptor blockade

Koh, C. Y., Ortaldo, J. R., Blazar, B. R., Bennett, M. & Murphy, W. J., Dec 1 2003, In : Blood. 102, 12, p. 4067-4075 9 p.

Research output: Contribution to journal › Article

Purging
Natural Killer Cells
Tumors
Bone
Leukemia
204 Citations (Scopus)

The proteasome inhibitor PS-341 sensitizes neoplastic cells to TRAIL-mediated apoptosis by reducing levels of c-FLIP

Sayers, T. J., Brooks, A. D., Koh, C. Y., Ma, W., Seki, N., Raziuddin, A., Blazar, B. R., Zhang, X., Elliott, P. J. & Murphy, W. J., Jul 1 2003, In : Blood. 102, 1, p. 303-310 8 p.

Research output: Contribution to journal › Article

Proteasome Inhibitors
Tumors
Apoptosis
Cells
Neoplasms
2002
21 Citations (Scopus)

NK inhibitory-receptor blockade for purging of leukemia: Effects on hematopoietic reconstitution

Koh, C. Y., Raziuddin, A., Welniak, L. A., Blazar, B. R., Bennett, M. & Murphy, W. J., 2002, In : Biology of Blood and Marrow Transplantation. 8, 1, p. 17-25 9 p.

Research output: Contribution to journal › Article

KIR Receptors
Natural Killer Cells
Leukemia
Coculture Techniques
Neoplasms
2001
122 Citations (Scopus)

Augmentation of antitumor effects by NK cell inhibitory receptor blockade in vitro and in vivo

Koh, C. Y., Blazar, B. R., George, T., Welniak, L. A., Capitini, C. M., Raziuddin, A., Murphy, W. J. & Bennett, M., May 15 2001, In : Blood. 97, 10, p. 3132-3137 6 p.

Research output: Contribution to journal › Article

Natural Killer Cell Receptors
Tumors
Major Histocompatibility Complex
Natural Killer Cells
KIR Receptors
61 Citations (Scopus)

Immunobiology of natural killer cells and bone marrow transplantation: Merging of basic and preclinical studies

Murphy, W. J., Koh, C. Y., Raziuddin, A., Bennett, M. & Longo, D. L., 2001, In : Immunological Reviews. 181, p. 279-289 11 p.

Research output: Contribution to journal › Review article

Bone Marrow Transplantation
Natural Killer Cells
Graft vs Host Disease
Bone Marrow
Natural Killer Cell Receptors
2000
18 Citations (Scopus)

Adoptive cellular immunotherapy: NK cells and bone marrow transplantation

Koh, C. Y., Welniak, L. A. & Murphy, W. J., 2000, In : Histology and Histopathology. 15, 4, p. 1201-1210 10 p.

Research output: Contribution to journal › Review article

Adoptive Immunotherapy
Bone Marrow Transplantation
Natural Killer Cells
Graft vs Host Disease
Homologous Transplantation
156 Citations (Scopus)

Defensins act as potent adjuvants that promote cellular and humoral immune responses in mice to a lymphoma idiotype and carrier antigens

Tani, K., Murphy, W. J., Chertov, O., Salcedo, R., Koh, C. Y., Utsunomiya, I., Funakoshi, S., Asai, O., Herrmann, S. H., Wang, J. M., Kwak, L. W. & Oppenheim, J. J., 2000, In : International Immunology. 12, 5, p. 691-700 10 p.

Research output: Contribution to journal › Article

Defensins
Humoral Immunity
Cellular Immunity
Lymphoma
Antigens
23 Citations (Scopus)

The functional relevance of NK-cell-mediated upregulation of antigen-specific IgG2a responses

Koh, C. Y. & Yuan, D., Sep 15 2000, In : Cellular Immunology. 204, 2, p. 135-142 8 p.

Research output: Contribution to journal › Article

Natural Killer Cells
Up-Regulation
Plasma Cells
Antigens
T Independent Antigens
1999
10 Citations (Scopus)

The mechanism of activation of NK-cell IFN-γ production by ligation of CD28

Cheung, J. C., Koh, C. Y., Gordon, B. E., Wilder, J. A. & Yuan, D., Apr 1999, In : Molecular Immunology. 36, 6, p. 361-372 12 p.

Research output: Contribution to journal › Article

Natural Killer Cells
Ligation
Interleukin-12
Cytokines
Messenger RNA
1998

Mechanism of induction of NK cell-IFN-γ production by anti-CD28 and IL-12

Koh, C. Y., Cheung, J. C. & Yuan, D., Mar 20 1998, In : FASEB Journal. 12, 5

Research output: Contribution to journal › Article

interleukin-12
natural killer cells
Interleukin-12
Natural Killer Cells
Chemical activation
1997
25 Citations (Scopus)

The Effect of NK Cell Activation by Tumor Cells on Antigen-Specific Antibody Responses

Koh, C. Y. & Yuan, D., Nov 15 1997, In : Journal of Immunology. 159, 10, p. 4745-4752 8 p.

Research output: Contribution to journal › Article

Natural Killer Cells
Antibody Formation
Antigens
Interleukin-12
Neoplasms
1996
77 Citations (Scopus)

The role of NK cells during in vivo antigen-specific antibody responses

Wilder, J. A., Koh, C. Y. & Yuan, D., Jan 1 1996, In : Journal of Immunology. 156, 1, p. 146-152 7 p.

Research output: Contribution to journal › Article

Natural Killer Cells
Antibody Formation
Antigens
Down-Regulation
Immunoglobulin G

The role of NK cells in enhancement of IGG2A response and ADCC in early immune responses

Koh, C. Y. & Yuan, D., 1996, In : FASEB Journal. 10, 6

Research output: Contribution to journal › Article

Antibody-Dependent Cell Cytotoxicity
natural killer cells
Natural Killer Cells
Tumors
immune response
1994
49 Citations (Scopus)

Interactions between B lymphocytes and NK cells

Yuan, D., Koh, C. Y. & Wilder, J. A., 1994, In : FASEB Journal. 8, 13, p. 1012-1018 7 p.

Research output: Contribution to journal › Review article

Lymphocytes
natural killer cells
Natural Killer Cells
B-lymphocytes
B-Lymphocytes
1993
20 Citations (Scopus)

Prolactin receptor expression by lymphoid tissues in normal and immunized rats

Koh, C. Y. & Phillips, J. T., 1993, In : Molecular and Cellular Endocrinology. 92, 2

Research output: Contribution to journal › Article

Prolactin Receptors
Lymphoid Tissue
Rats
Tissue
Immunization