Khajohnpat Boonprasert

Characterizations of Elephant Endotheliotropic Herpesvirus Type 1A and 4 Co-Infections in Asian Elephant (Elephas maximus) Calves

Khajohnpat Boonprasert, Saralee Srivorakul, Natcha Monchaivanakit, Warangkhana Langkaphin et autres

Three cases of double infection with elephant endotheliotropic herpesvirus (EEHV) types 1A and 4 in captive Asian elephants are presented. The first calf was a 4-year-old female that showed initial signs of lethargy and depression. The second calf was a 6-year-old female …

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Response of elephant peripheral blood mononuclear cells when stimulated with elephant endotheliotropic herpesvirus glycoprotein B (EEHV-gB)

Tidaratt Sittisak, Thunyamas Guntawang, Saralee Srivorakul, Kornravee Photichai et autres

Elephant endotheliotropic herpesvirus-hemorrhagic disease (EEHV-HD) is the most highly fatal infectious disease among young Asian elephants. Despite the fact that antiviral therapy has been widely used, its therapeutic outcomes remain uncertain. Additionally, the virus has yet to be successfully cultivated in vitro …

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Dexmedetomidine Effectively Sedates Asian Elephants (Elephas maximus)

Nithidol Buranapim, Pawinee Kulnanan, Kullapassorn Chingpathomkul, Taweepoke Angkawanish et autres

This study investigated the sedative effects of dexmedetomidine in Asian elephants. We hypothesized that 2 µg/kg dexmedetomidine would provide sufficient standing sedation. A crossover design study was performed in three Asian elephants. Each elephant was assigned to 1 of 3 treatment groups—1 …

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Assessing Coagulation Parameters in Healthy Asian Elephants (Elephas maximus) from European and Thai Populations

Sónia A. Jesus, Anke Schmidt, Jörns Fickel, Marcus Georg Doherr et autres

The Asian elephant population is continuously declining due to several extrinsic reasons in their range countries, but also due to diseases in captive populations worldwide. One of these diseases, the elephant endotheliotropic herpesvirus (EEHV) hemorrhagic disease, is very impactful because it particularly …

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Evaluation of Elephant Peripheral Blood Mononuclear Cells in Response to Stimulation with Elephant Endotheliotropic Herpesvirus Glycoprotein B (EEHV-gB) in Vitro

Tidaratt Sittisak, Thunyamas Guntawang, Saralee Srivorakul, Kornravee Photichai et autres

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A Longitudinal Study of Hematology and Stress Biomarker Profiles in Young Asian Elephants (Elephas Maximus) in Relation to Elephant Endotheliotropic Herpesvirus (EEHV) in Thailand

Khajohnpat Boonprasert, Yaoprapa Yun, Worapong Kosaruk, Patcharapa Towiboon et autres

Elephant endotheliotropic herpesvirus hemorrhagic disease (EEHV-HD) is a virulent disease that causes severe hemorrhage and sudden death in Asian elephant calves. A change in hematology profiles is one indicator of infection before clinical signs appear; however, to be effective, individual baselines and …

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Impact of Weight Carriage on Joint Kinematics in Asian Elephants Used for Riding

Siriphan Kongsawasdi, Janine L. Brown, Khajohnpat Boonprasert, Pornsawan Pongsopawijit et autres

BACKGROUND: Elephants in Thailand have changed their roles from working in the logging industry to tourism over the past two decades. In 2020, there were approximately 2700 captive elephants participating in activities such as riding and trekking. During work hours, riding elephants …

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Pathogenesis of hemorrhagic disease caused by elephant endotheliotropic herpesvirus (EEHV) in Asian elephants (Elephas maximus)

Thunyamas Guntawang, Tidaratt Sittisak, Varankpicha Kochagul, Saralee Srivorakul et autres

Elephant endotheliotropic herpesvirus-hemorrhagic disease (EEHV-HD) is an acute fatal disease in elephants. Despite the fact that the underlying pathogenesis of EEHV-HD has been proposed, it remains undetermined as to what mechanisms drive these hemorrhagic and edematous lesions. In the present study, we …

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Clinical characteristics of elephant endotheliotropic herpesvirus (EEHV) cases in Asian elephants (Elephas maximus) in Thailand during 2006–2019

Yaoprapa Yun, Supaphen Sripiboon, Kidsadagon Pringproa, Phongsakorn Chuammitri et autres

BACKGROUND: Elephant endotheliotropic herpesvirus causes a hemorrhagic disease (EEHV-HD) that is a major cause of death in juvenile Asian elephants with EEHV1 and EEHV4 being the most prevalent. AIM: To perform a retrospective clinical data analysis. METHODS: Records of a total of …

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Successful treatment of elephant endotheliotropic herpesvirus infection in an Asian elephant (Elephas maximus) calf by oral acyclovir medication: Case report

Siripat Khammesri, Yaoprapa Mathura, Khajohnpat Boonprasert, Chadarat Ampasavate et autres

Elephant endotheliotropic herpesvirus (EEHV) is a major cause of death in Asian elephant (Elephas maximus) calves. A 2-year, 11-month-old female, captive Asian elephant presented with facial edema and a mild fever. Blood samples were collected and showed EEHV1A positivity with a high …

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Possible roles of monocytes/macrophages in response to elephant endotheliotropic herpesvirus (EEHV) infections in Asian elephants (Elephas maximus)

Saralee Srivorakul, Thunyamas Guntawang, Varankpicha Kochagul, Kornravee Photichai et autres

Elephant endotheliotropic herpesvirus-hemorrhagic disease (EEHV-HD) is the primary cause of acute, highly fatal, hemorrhagic diseases in young Asian elephants. Although monocytopenia is frequently observed in EEHV-HD cases, the role monocytes play in EEHV-disease pathogenesis is unknown. This study seeks to explain the …

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Survival analysis of confirmed elephant endotheliotropic herpes virus cases in Thailand from 2006 – 2018

Khajohnpat Boonprasert, Veerasak Punyapornwithaya, Pallop Tankaew, Taweepoke Angkawanish et autres

The elephant endotheliotropic herpesvirus (EEHV) has been a known cause of death of young elephants in Thailand for over a decade. In this study, we report on the demography, disease characteristics and mortality of 58 elephants with confirmed EEHV hemorrhagic disease between …

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