181 results on '"Chao-Chin Chang"'
Search Results
2. The study on setting priorities of zoonotic agents for medical preparedness and allocation of research resources.
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Kung-Ching Wang, Chia-Lin Chang, Sung-Hsi Wei, and Chao-Chin Chang
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Medicine ,Science - Abstract
The aim of this study is to develop a scoring platform to be used as a reference for both medical preparedness and research resource allocation in the prioritization of zoonoses. Using a case-control design, a comprehensive analysis of 46 zoonoses was conducted to identify factors influencing disease prioritization. This analysis provides a basis for constructing models and calculating prioritization scores for different diseases. The case group (n = 23) includes diseases that require immediate notification to health authorities within 24 hours of diagnosis. The control group (n = 23) includes diseases that do not require such immediate notification. Two different models were developed for primary disease prioritization: one model incorporated the four most commonly used prioritization criteria identified through an extensive literature review. The second model used the results of multiple logistic regression analysis to identify significant factors (with p-value less than 0.1) associated with 24-hour reporting, allowing for objective determination of disease prioritization criteria. These different modeling approaches may result in different weights and positive or negative effects of relevant factors within each model. Our study results highlight the variability of zoonotic disease information across time and geographic regions. It provides an objective platform to rank zoonoses and highlights the critical need for regular updates in the prioritization process to ensure timely preparedness. This study successfully established an objective framework for assessing the importance of zoonotic diseases. From a government perspective, it advocates applying principles that consider disease characteristics and medical resource preparedness in prioritization. The results of this study also emphasize the need for dynamic prioritization to effectively improve preparedness to prevent and control disease.
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- 2024
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3. Preparation of recombinant glycoprotein B (gB) of Chelonid herpesvirus 5 (ChHV5) for antibody production and its application for infection detection in sea turtles
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Tsung-Hsien Li, Wei-Li Hsu, Chang-You Chen, Yi-Chen Chen, Yu-Chen Wang, Ming-An Tsai, I.-Chun Chen, and Chao-Chin Chang
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Medicine ,Science - Abstract
Abstract The Chelonid herpesvirus 5 (ChHV5) infection possibly associated to the fibropapillomatosis (FP) disease in sea turtles worldwide remains largely unknown and limited studies have used serological approaches to detection of antibodies against ChHV5 in sea turtles with or without FP. We aimed to develop diagnostic platforms based on the viral glycoprotein B (gB) for ChHV5 infection. In this study, five recombinant sub-fragments of the gB protein were successfully expressed and subsequently served as antigens for both seroprevalence and antibody production. The results indicated that the five expressed proteins harbored antigenicity, shown by the results of using sera from sea turtles that were PCR-positive for ChHV5. Moreover, seropositive sea turtles were significantly associated with FP (p
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- 2022
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4. Microbial community dynamics in electroactive biofilms across time under different applied anode potentials
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Chao-Chin Chang, Yu-Chun Chen, and Chang-Ping Yu
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Poised anode potentials ,Current production ,Microbial community ,Electrochemically active bacteria ,Principal component analysis ,Environmental technology. Sanitary engineering ,TD1-1066 - Abstract
Abstract In bioelectrochemical wastewater treatment systems, electrochemically active bacteria (EAB) in the anode can simultaneously treat wastewater and produce electricity via extracellular electron transfer. The anode potential has been reported as one way for selecting EAB; though, conflicting results of the relationship between applied potentials and the performance and community composition of EAB have been reported. In this study, we investigated the cultivation time and applied anode potentials (+0.2, 0, −0.2, and −0.4 V vs. Ag/AgCl) on the performance of current production and the compositions of the microbial community. Our results showed that the applied potentials affected the performance of current production, but the effect was substantially reduced with cultivation time. Particularly, the current gradually increased from negative to positive values with time for the applied anode potential at −0.4 V, implying the anode biofilm shifted from accepting electrons to producing electrons. In addition, principal coordinates analysis results indicated that microbial community compositions became closer to each other after long-term enrichment. Subsequently, principal component analysis demonstrated that systems with applied potentials from +0.2, 0 to −0.2 V and at −0.4 V were, respectively, reclassified into principal component 1 (higher-energy-harvesting group) and principal component 2 (lower-energy-harvesting group), implying in addition to cultivation time, the amount of energy available for bacterial growth is another key factor that influences EAB populations. Overall, this study has demonstrated that the selected cultivation time and the particular anode potentials applied in the study determine whether the applied anode potentials would affect the community and performance of EAB.
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- 2022
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5. Epidemiology of Severe Fever with Thrombocytopenia Syndrome in Dogs and Cats in Taiwan
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Chih-Ying Kuan, Shan-Chia Ou, Chao-Chin Chang, Pei-Ling Kao, Ruei-Sheng Tsai, Porjai Rattanapanadda, Tsai-Lu Lin, Ken Maeda, Tsun-Li Cheng, Ya-Jane Lee, Shih-Te Chuang, Shiun-Long Lin, Hsien-Yueh Liu, Fong-Yuan Lin, Jen-Wei Lin, Wei-Li Hsu, and Chi-Chung Chou
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Severe Fever with Thrombocytopenia Syndrome (SFTS) ,emerging tick-borne disease ,dog ,cat ,RNA prevalence ,Microbiology ,QR1-502 - Abstract
Severe Fever with Thrombocytopenia Syndrome (SFTS), caused by the SFTS Virus (SFTSV), is a global health threat. SFTSV in Taiwan has only been reported in ruminants and wild animals. Thus, we aimed to investigate the infection statuses of dogs and cats, the animals with closer human interactions. Overall, the SFTSV RNA prevalence was 23% (170/735), with dogs showing a 25.9% (111/429) prevalence and cats at 19.3% (59/306) prevalence. Noticeably, the prevalence in stray animals (39.8% 77/193) was significantly higher than in domesticated ones (17.2%, 93/542). Among the four categories analyzed, the highest SFTSV prevalence was found in the stray dogs at 53.9% (120/193), significantly higher than the 24.2% prevalence noted in stray cats. In contrast, domesticated animals exhibited similar prevalence rates, with 17.1% for dogs and 17.2% for cats. It is noteworthy that in the domesticated animal groups, a significantly elevated prevalence (45%, 9/20) was observed among cats exhibiting thrombocytopenia compared to those platelet counts in the reference range (4.8%, 1/21). The high infection rate in stray animals, especially stray dogs, indicated that exposure to various outdoor environments influences the prevalence of infections. Given the higher human interaction with dogs and cats, there is a need for proactive measures to reduce the risk associated with the infection of SFTSV in both animals and humans.
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- 2023
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6. Trapa natans Husk‐Derived Nanoporous Carbons as Electrode Materials for Sustainable High‐Power Microbial Fuel Cell Supercapacitor Systems
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Chia-Chieh Hsu, Yi-Chu Lin, Yao-Yu Lin, Hsin-Tien Li, Chung-Sheng Ni, Chao-I Liu, Chao-Chin Chang, Liang-Chen Lin, Yung-Tin Pan, Shih-Fu Liu, Tzu-Yin Liu, and Han-Yi Chen
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activated carbon ,high power density ,microbial fuel cells ,Trapa natans husks ,Environmental technology. Sanitary engineering ,TD1-1066 ,Renewable energy sources ,TJ807-830 - Abstract
Microbial fuel cells (MFCs), which convert chemical energy into electricity using microbes, are an emerging sustainable energy technology. However, high costs and low power output limit the advanced development of MFCs. This study utilizes the agricultural waste, Trapa natans husks, to obtain low‐cost nanoporous carbons. The Trapa natans husk‐derived nanoporous carbons (TNHs) are used as electrode materials in Escherichia coli system‐based MFCs. After optimization of both anode and cathode materials for MFCs, a high average power density of 5713 mW m−2 is achieved, which is 1.9 times greater than that of commercial activated carbon. It is shown that TNHs have better bacterial adhesion and electrochemical activities owing to their favorable pore size distribution, suitable functional group, high surface area, and excellent biocompatibility and conductivity. Furthermore, the supercapacitors (SCs) with TNH‐based electrodes are utilized to store the energy generated from MFCs. The SC with TNH‐600 electrodes exhibits a high specific capacitance of 84 F g−1 at a current density of 1 A g−1 after 1000 cycles. This study demonstrates that TNH is a promising electrode material for biofriendly and renewable MFCs, and the MFC‐SC system with TNH electrodes is a high‐power sustainable energy generation and storage device.
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- 2022
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7. The First Nationwide Surveillance of Severe Fever with Thrombocytopenia Syndrome in Ruminants and Wildlife in Taiwan
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Chih-Ying Kuan, Tsai-Lu Lin, Shan-Chia Ou, Shih-Te Chuang, Jacky Peng-Wen Chan, Ken Maeda, Tetsuya Mizutani, Ming-Pin Wu, Fan Lee, Fang-Tse Chan, Chao-Chin Chang, Rui-Ling Liang, Sue-Fung Yang, Tsung-Ching Liu, Wu-Chun Tu, Hau-You Tzeng, Chia-Jung Lee, Chuen-Fu Lin, Hsu-Hsun Lee, Jhih-Hua Wu, Hsiao-Chien Lo, Kuan-Chieh Tseng, Wei-Li Hsu, and Chi-Chung Chou
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severe fever with thrombocytopenia syndrome ,ruminant ,wildlife ,Taiwan ,Microbiology ,QR1-502 - Abstract
Since the first discovery of severe fever with thrombocytopenia syndrome virus (SFTSV) in China in 2009, SFTSV has rapidly spread through other Asian countries, including Japan, Korea, Vietnam and Pakistan, in chronological order. Taiwan reported its first discovery of SFTSV in sheep and humans in 2020. However, the prevalence of SFTSV in domestic and wildlife animals and the geographic distribution of the virus within the island remain unknown. A total of 1324 animal samples, including 803 domestic ruminants, 521 wildlife animals and 47 tick pools, were collected from March 2021 to December 2022 from 12 counties and one terrestrial island. The viral RNA was detected by a one-step real-time reverse transcription polymerase chain reaction (RT-PCR). Overall, 29.9% (240/803) of ruminants showed positive SFTSV RNA. Sheep had the highest viral RNA prevalence of 60% (30/50), followed by beef cattle at 28.4% (44/155), goats at 28.3% (47/166), and dairy cows at 27.5% (119/432). The bovine as a total of dairy cow and beef cattle was 27.8% (163/587). The viral RNA prevalence in ticks (predominantly Rhipicephalus microplus) was similar to those of ruminants at 27.7% (13/47), but wild animals exhibited a much lower prevalence at 1.3% (7/521). Geographically the distribution of positivity was quite even, being 33%, 29.1%, 27.5% and 37.5% for northern, central, southern and eastern Taiwan, respectively. Statistically, the positive rate of beef cattle in the central region (55.6%) and dairy cattle in the eastern region (40.6%) were significantly higher than the other regions; and the prevalence in Autumn (September–November) was significantly higher than in the other seasons (p < 0.001). The nationwide study herein revealed for the first time the wide distribution and high prevalence of SFTSV in both domestic animals and ticks in Taiwan. Considering the high mortality rate in humans, surveillance of other animal species, particularly those in close contact with humans, and instigation of protective measures for farmers, veterinarians, and especially older populations visiting or living near farms or rural areas should be prioritized.
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- 2023
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8. Human chorionic gonadotropin (hCG)-induced ovulation occurs later but with equal occurrence in lactating dairy cows: comparing hCG and gonadotropin-releasing hormone protocols
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Tsung-Ching LIU, Chia-Tang HO, Kuang-Po LI, Chao-Chin CHANG, and Jacky Peng-Wen CHAN
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gonadotropin-releasing hormone (gnrh) ,human chorionic gonadotropin (hcg) ,ovulation time ,Reproduction ,QH471-489 ,Internal medicine ,RC31-1245 - Abstract
This study assessed the effects of two hormones, human chorionic gonadotropin (hCG) and gonadotropin-releasing hormone (GnRH), on ovulatory responses during different diestrous stages in lactating dairy cows. Estrous cycles of 21 cows were synchronized and were enrolled in stage 1 of the experiment. The cows were treated with a prostaglandin (PG) F2α analog either 9 to 10 days [mid-diestrus (MD) group] or 5.5 to 6.5 days [early-diestrus (ED) group] after synchronized ovulation (day 0 = first PGF2α administration). On day 2, the cows were administrated 250 μg GnRH or 3000 IU hCG. Ovulation was determined every 2 h from 24 to 36 h after GnRH or hCG administration, and then every 4 h up to 72 h until ovulation. Cows in stage 2 were administered these treatments in the reverse order. The results indicated that average ovulation times in cows treated with GnRH in the MD group (GnRH-MD group) and cows treated with GnRH in the ED group (GnRH-ED group) were 30.0 ± 1.0 h and 28.8 ± 0.4 h, respectively. However, ovulation times for cows treated with hCG in the MD group (hCG-MD group) and cows treated with hCG in the ED group (hCG-ED group) were 35.8 ± 4.6 h and 32.8 ± 2.2 h, respectively, and ovulation occurred significantly later in the hCG-treated groups than in the GnRH-treated groups. In summary, we found that hCG-induced ovulation occurred later than GnRH-induced ovulation regardless of different diestrous peroids; however, the two treatments did not differ in terms of percentage of ovulation.
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- 2019
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9. Potential Risk Factors Associated with Infection with Bovine Leukaemia Virus in Dairy and Beef Cattle in Taiwan
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Yi-Chen Chen, Wen-Yu Chin, Chao-Chin Chang, Shih-Te Chuang, and Wei-Li Hsu
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bovine leukaemia virus ,dairy cows ,beef cattle ,heifer ,risk factors ,Medicine - Abstract
Bovine leukaemia virus (BLV), which is classified as a Deltaretrovirus, is the aetiologic agent of enzootic bovine leukosis (EBL), a chronic lymphoproliferative disorder with a worldwide distribution. EBL is widespread in dairy herds and causes a direct economic impact due to reduced milk production and the early culling of BLV-infected cattle. The BLV infection status in Taiwan remains largely unknown; a high prevalence of BLV in dairy cows was recently revealed. The present study further investigated BLV infections in beef cattle. Surprisingly, the prevalence of BLV proviral DNA was as low as 11.8% (23/195), which is significantly lower than that noted in dairy cows, which was 42.5% (102/240) (p < 0.001). Factors associated with BLV infections were subsequently investigated. Due to the differences in herd management, an analysis of risk factors for a BLV infection was independently conducted in these two sectors. Several factors associated with a BLV infection were identified. Age was significantly associated with BLV infection status in dairy cows (p < 0.001) but not in beef cattle. A high prevalence of BLV was observed in cattle >15.5 months old (57.8%) compared with those ≤15.5 months old (11.4%). Moreover, after stratification analysis, based on the critical age of 15.5 months, as determined by the receiver operating characteristic (ROC) curve, a significantly higher BLV prevalence was demonstrated in lactating dairy cows, cattle undergoing bull breeding, heifers at older ages, and those undergoing routine rectal palpation. Due to the high prevalence of BLV in Taiwan, the development of an effective control program, based on the identified risk factors, is important for interrupting the routes of BLV transmission within herds.
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- 2021
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10. Virulence of Japanese Encephalitis Virus Genotypes I and III, Taiwan
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Yi-Chin Fan, Jen-Wei Lin, Shu-Ying Liao, Jo-Mei Chen, Yi-Ying Chen, Hsien-Chung Chiu, Chen-Chang Shih, Chi-Ming Chen, Ruey-Yi Chang, Chwan-Chuen King, Wei-June Chen, Yi-Ting Ko, Chao-Chin Chang, and Shyan-Song Chiou
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Japanese encephalitis virus ,genotype ,GI JEV ,GIII JEV ,flavivirus ,mosquitoborne ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
The virulence of genotype I (GI) Japanese encephalitis virus (JEV) is under debate. We investigated differences in the virulence of GI and GIII JEV by calculating asymptomatic ratios based on serologic studies during GI- and GIII-JEV endemic periods. The results suggested equal virulence of GI and GIII JEV among humans.
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- 2017
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11. Modulations of Foot and Ankle Frontal Kinematics for Breaking and Propulsive Movement Characteristics during Side-Step Cutting with Varying Midsole Thicknesses
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Yi-Jia Lin, Shih-Chi Lee, Chao-Chin Chang, Tsung-Han Liu, Tzyy-Yuang Shiang, and Wei-Chun Hsu
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Biotechnology ,TP248.13-248.65 ,Biology (General) ,QH301-705.5 - Abstract
This study is aimed at determining the effects of midsole thickness on movement characteristic during side cutting movement. Fifteen athletes performed side-step cutting while wearing shoes with varying midsole thicknesses. Temporal-spatial and ground reaction force variables as well as foot and ankle frontal kinematics were used to describe breaking and propulsive movement characteristics and modulation strategies. Regardless of midsole thickness, temporal-spatial variables and breaking and propulsive force during side cutting were statistically unchanged. Significantly greater peaks of ankle inversion and plantarflexion with a thicker sole and greater midtarsal pronation with a thinner sole were observed. Current results demonstrated that hypotheses formed solely based on material testing were insufficient to understand the adaptations in human movement because of the redundancy of the neuromusculoskeletal system. Participants were able to maintain temporal-spatial performance during side cutting while wearing shoes with midsoles of varying thicknesses. Increased pronation for a thinner sole might help reduce the force of impact but might be associated with an increased risk of excessive stress on soft tissue. Increased peak of ankle inversion and plantarflexion for a thicker sole may be unfavorable for the stability of ankle joint. Information provided in human movement testing is crucial for understanding factors associated with movement characteristics and injury and should be considered in the future development of shoe design.
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- 2018
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12. The Use of Wearable Sensors for the Movement Assessment on Muscle Contraction Sequences in Post-Stroke Patients during Sit-to-Stand
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Wei-Chun Hsu, Chao-Chin Chang, Yi-Jia Lin, Fu-Chi Yang, Li-Fong Lin, and Kuan-Nien Chou
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wearable sensors ,electromyography signal ,stroke ,sit-to-stand ,contraction of the muscles ,Chemical technology ,TP1-1185 - Abstract
Electromyography (EMG) sensors have been used to study the sequence of muscle contractions during sit-to-stand (STS) in post-stroke patients. However, the majority of the studies used wired sensors with a limited number of placements. Using the latest improved wearable technology with 16 sensors, the current study was a thorough investigation to evaluate the contraction sequences of eight key muscles on the trunk and bilateral limbs during STS in post-stroke patients, as it became feasible. Multiple wearable sensors for the detection of muscle contraction sequences showed that the post-stroke patients performed STS with abnormal firing sequences, not only in the primary mover on the sagittal plane during raising, but also in the tibialis anterior, which may affect anticipatory postural adjustment in the gluteus medius, which may affect balance control. The abnormal tibialis anterior contraction until the early ascending phase and the delayed firing of the gluteus muscles highlight the importance of whole-kinetic-chain monitoring of contraction sequences using wearable sensors. The findings can be helpful for the design of therapeutic exercises.
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- 2019
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13. First Pediatric Case of Tularemia after a Coyote Bite
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Bruno B. Chomel, Jane A. Morton, Rickie W. Kasten, and Chao-chin Chang
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Infectious and parasitic diseases ,RC109-216 - Abstract
Bite-transmitted tularemia is a rare event in humans and most of the cases have been associated with cat bites. We report the first pediatric case of tularemia caused by a coyote (Canis latrans) bite. Coyotes can be healthy carriers of Francisella tularensis and transmit this infectious agent through a bite. Pediatricians should be aware of this risk after a carnivore bite and implement appropriate antibiotic therapy, as amoxicillin/clavulanate potassium (Augmentin) may have prolonged the typical two to three days’ incubation period commonly observed for tularemia after an animal bite and was not effective in preventing clinical signs in this child. Finally, it emphasizes again the importance of early and late serum samples for appropriate serodiagnostic.
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- 2016
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14. Isolation of Bartonella henselae and Two New Bartonella Subspecies, Bartonellakoehlerae Subspecies boulouisii subsp. nov. and Bartonella koehlerae Subspecies bothieri subsp. nov. from Free-Ranging Californian Mountain Lions and Bobcats.
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Bruno B Chomel, Sophie Molia, Rickie W Kasten, Gina M Borgo, Matthew J Stuckey, Soichi Maruyama, Chao-Chin Chang, Nadia Haddad, and Jane E Koehler
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Medicine ,Science - Abstract
Domestic cats are the natural reservoir of Bartonella henselae, B. clarridgeiae and B. koehlerae. To determine the role of wild felids in the epidemiology of Bartonella infections, blood was collected from 14 free-ranging California mountain lions (Puma concolor) and 19 bobcats (Lynx rufus). Bartonella spp. were isolated from four (29%) mountain lions and seven (37%) bobcats. These isolates were characterized using growth characteristics, biochemical reactions, molecular techniques, including PCR-RFLP of selected genes or interspacer region, pulsed-field gel electrophoresis (PFGE), partial sequencing of several genes, and DNA-DNA hybridization. Two isolates were identical to B. henselae genotype II. All other isolates were distinguished from B. henselae and B. koehlerae by PCR-RFLP of the gltA gene using endonucleases HhaI, TaqI and AciI, with the latter two discriminating between the mountain lion and the bobcat isolates. These two novel isolates displayed specific PFGE profiles distinct from B. henselae, B. koehlerae and B. clarridgeiae. Sequences of amplified gene fragments from the three mountain lion and six bobcat isolates were closely related to, but distinct from, B. henselae and B. koehlerae. Finally, DNA-DNA hybridization studies demonstrated that the mountain lion and bobcat strains are most closely related to B. koehlerae. We propose naming the mountain lion isolates B. koehlerae subsp. boulouisii subsp. nov. (type strain: L-42-94), and the bobcat isolates B. koehlerae subsp. bothieri subsp. nov. (type strain: L-17-96), and to emend B. koehlerae as B. koehlerae subsp. koehlerae. The mode of transmission and the zoonotic potential of these new Bartonella subspecies remain to be determined.
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- 2016
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15. Development of a Summarized Health Index (SHI) for use in predicting survival in sea turtles.
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Tsung-Hsien Li, Chao-Chin Chang, I-Jiunn Cheng, and Suen-Chuain Lin
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Medicine ,Science - Abstract
Veterinary care plays an influential role in sea turtle rehabilitation, especially in endangered species. Physiological characteristics, hematological and plasma biochemistry profiles, are useful references for clinical management in animals, especially when animals are during the convalescence period. In this study, these factors associated with sea turtle surviving were analyzed. The blood samples were collected when sea turtles remained alive, and then animals were followed up for surviving status. The results indicated that significantly negative correlation was found between buoyancy disorders (BD) and sea turtle surviving (p < 0.05). Furthermore, non-surviving sea turtles had significantly higher levels of aspartate aminotranspherase (AST), creatinine kinase (CK), creatinine and uric acid (UA) than surviving sea turtles (all p < 0.05). After further analysis by multiple logistic regression model, only factors of BD, creatinine and UA were included in the equation for calculating summarized health index (SHI) for each individual. Through evaluation by receiver operating characteristic (ROC) curve, the result indicated that the area under curve was 0.920 ± 0.037, and a cut-off SHI value of 2.5244 showed 80.0% sensitivity and 86.7% specificity in predicting survival. Therefore, the developed SHI could be a useful index to evaluate health status of sea turtles and to improve veterinary care at rehabilitation facilities.
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- 2015
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16. Typhoon-related Leptospirosis and Melioidosis, Taiwan, 2009
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Hsun-Pi Su, Ta-Chien Chan, and Chao-Chin Chang
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leptospirosis ,melioidosis ,natural disaster ,typhoon ,bacteria ,zoonoses ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Published
- 2011
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17. Bartonella spp. Isolated from Wild and Domestic Ruminants in North America
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Chao-Chin Chang, Bruno B. Chomel, Rickie W. Kasten, Remy Heller, Katherine M. Kocan, Hiroshi Ueno, Kazuhiro Yamamoto, Vernon C. Bleich, Becky M. Pierce, Ben J. Gonzales, Pamela K. Swift, Walter M. Boyce, Spencer S. Jang, Henri-Jean Boulouis, and Yves Piémont
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bartonella spp ,California ,cattle ,elk ,mule deer ,Oklahoma ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
Bartonella species were isolated from 49% of 128 cattle from California and Oklahoma, 90% of 42 mule deer from California, and 15% of 100 elk from California and Oregon. Isolates from all 63 cattle, 14 deer, and 1 elk had the same polymerase chain reaction/restriction fragment length polymorphism profiles. Our findings indicate potential for inter- and intraspecies transmission among ruminants, as well as risk that these Bartonella spp. could act as zoonotic agents.
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- 2000
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18. Seroepidemiology of Bartonella vinsonii subsp. berkhoffii Infection in California Coyotes, 1994-1998
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Chao-Chin Chang, Kazuhiro Yamamoto, Bruno B. Chomel, Rickie W. Kasten, Darren C. Simpson, Charles R. Smith, and Vicki L. Kramer
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United States ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
The prevalence of antibodies to Bartonella vinsonii subsp. berkhoffii in coyotes (Canis latrans) in California ranged from 51% in central to 34% in southern and 7% in northern California. Seropositive coyotes were more likely to be from coastal than inland counties (p < 0.05). The clustered distribution of Bartonella seropositivity in coyotes suggests that B. vinsonii subsp. berkhoffii infection is vectorborne. Further investigation is warranted to evaluate which arthropods are vectors and what the mode of transmission is from wildlife to domestic dogs and possibly humans.
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- 1999
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19. Partially neutralizing potency against emerging genotype I virus among children received formalin-inactivated Japanese encephalitis virus vaccine.
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Yi-Chin Fan, Jo-Mei Chen, Hsien-Chung Chiu, Yi-Ying Chen, Jen-Wei Lin, Chen-Chang Shih, Chih-Ming Chen, Chao-Chin Chang, Gwong-Jen J Chang, and Shyan-Song Chiou
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Arctic medicine. Tropical medicine ,RC955-962 ,Public aspects of medicine ,RA1-1270 - Abstract
BACKGROUND: Genotype I (GI) Japanese encephalitis virus (JEV) that replaced GIII virus has become the dominant circulating virus in Asia. Currently, all registered live and inactivated JEV vaccines are derived from genotype III viruses. In Taiwan, the compulsory JEV vaccination policy recommends that children receives four doses of formalin-inactivated Nakayama (GIII) JEV vaccine. METHODOLOGY/PRINCIPAL FINDINGS: To evaluate the influence of genotype replacement on the post-vaccination viral neutralizing ability by GIII and GI viruses, the small panel of vaccinated-children serum specimens was assembled, and the reciprocal 50% plaque-reduction neutralizing antibody titers (PRNT(50)) were measured against Nakayama vaccine strain, CJN GIII human brain isolate and TC2009-1 GI mosquito isolate. The seropositivity rate (PRNT(50) ≥ 1:10) and geometric mean titers (GMT) against the TC2009-1 virus were the lowest among the three viruses. The protective threshold against the CJN and TC2009-1 viruses could only be achieved when the GMT against Nakayama virus was ≥ 1:20 or ≥ 1:80, respectively. Using undiluted vaccinees' sera, the enhancement of JEV infection in K562 cells was observed in some low or non-neutralizing serum specimens. CONCLUSIONS/SIGNIFICANCE: Our preliminary study has shown that neutralizing antibodies, elicited by the mouse brain-derived and formalin-inactivated JEV Nakayama vaccine among a limited number of vaccinees, have reduced neutralizing capacity against circulating GI virus, but more detailed studies are needed to address the potential impact on the future vaccine policy.
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- 2012
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20. Parallel evolution of a type IV secretion system in radiating lineages of the host-restricted bacterial pathogen Bartonella.
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Philipp Engel, Walter Salzburger, Marius Liesch, Chao-Chin Chang, Soichi Maruyama, Christa Lanz, Alexandra Calteau, Aurélie Lajus, Claudine Médigue, Stephan C Schuster, and Christoph Dehio
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Genetics ,QH426-470 - Abstract
Adaptive radiation is the rapid origination of multiple species from a single ancestor as the result of concurrent adaptation to disparate environments. This fundamental evolutionary process is considered to be responsible for the genesis of a great portion of the diversity of life. Bacteria have evolved enormous biological diversity by exploiting an exceptional range of environments, yet diversification of bacteria via adaptive radiation has been documented in a few cases only and the underlying molecular mechanisms are largely unknown. Here we show a compelling example of adaptive radiation in pathogenic bacteria and reveal their genetic basis. Our evolutionary genomic analyses of the α-proteobacterial genus Bartonella uncover two parallel adaptive radiations within these host-restricted mammalian pathogens. We identify a horizontally-acquired protein secretion system, which has evolved to target specific bacterial effector proteins into host cells as the evolutionary key innovation triggering these parallel adaptive radiations. We show that the functional versatility and adaptive potential of the VirB type IV secretion system (T4SS), and thereby translocated Bartonella effector proteins (Beps), evolved in parallel in the two lineages prior to their radiations. Independent chromosomal fixation of the virB operon and consecutive rounds of lineage-specific bep gene duplications followed by their functional diversification characterize these parallel evolutionary trajectories. Whereas most Beps maintained their ancestral domain constitution, strikingly, a novel type of effector protein emerged convergently in both lineages. This resulted in similar arrays of host cell-targeted effector proteins in the two lineages of Bartonella as the basis of their independent radiation. The parallel molecular evolution of the VirB/Bep system displays a striking example of a key innovation involved in independent adaptive processes and the emergence of bacterial pathogens. Furthermore, our study highlights the remarkable evolvability of T4SSs and their effector proteins, explaining their broad application in bacterial interactions with the environment.
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- 2011
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21. Fluoroquinolone-resistant Salmonella sp. in Carcasses
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Yu-Chih Wang, Kuang-Sheng Yeh, Chao-Chin Chang, Shih-Ling Hsuan, and Ter-Hsin Chen
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Salmonella ,fluoroquinolone ,Taiwan ,letter ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Published
- 2006
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22. Gait analysis based on an inertial measurement unit sensor: Validation of spatiotemporal parameters calculation in healthy young and older adults.
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Tommy Sugiarto, Yi-Jia Lin, Chao-Chin Chang, and Wei-Chun Hsu
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- 2017
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23. Do thicker midsoles increase shock attenuation and do thin midsoles facilitate propulsion during lunge maneuvers? Footwear design for racket-sport industry.
- Author
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Yi-Jia Lin, Chao-Chin Chang, Shih-Chi Lee, Wei-Chun Hsu, Tzyy-Yuang Shiang, Tsung-Han Liu, and Hao-Ling Chen
- Published
- 2016
- Full Text
- View/download PDF
24. Detection of Rabies Virus in a Yellow-throated Marten (Martes flavigula chrysospila) in Taiwan.
- Author
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Wei-Cheng Hsu, Fan Lee, Yen-Wen Chen, Yang-Chang Tu, Chao-Chin Chang, Yi-Lun Chiang, and Shu-Chia Hu
- Abstract
In June 2021, a yellow-throated marten (Martes flavigula chrysospila) submitted for postmortem examination was diagnosed as rabid through laboratory testing. The rabies virus detected was closest phylogenetically to viruses of ferret badgers (Melogale moschata subaurantiaca) in Taiwan, indicating spillover infection from the primary reservoir in this area, the ferret badger. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
25. Nature-based solutions for securing contributions of water, food, and energy in an urban environment
- Author
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Mei-Hua Yuan, Fang-Chen Lo, Chang-Ping Yu, Hsin-hsin Tung, Yu-Sen Chang, Pei-Te Chiueh, null Hsin-Chieh, null Huang, Chao-Chin Chang, Chung-Yu Guan, Chun-Wei Wu, Zi-Xuan Xu, and Shang-Lien Lo
- Subjects
Rain ,Health, Toxicology and Mutagenesis ,Humans ,Environmental Chemistry ,Economic Development ,General Medicine ,Pollution ,Ecosystem ,Filtration ,Water Purification - Abstract
There is growing awareness that nature-based solutions (NBS) prevent negative effects and secure ecosystem services. However, the potential of NBS to provide intended benefits has not been rigorously assessed. Water, food, and energy (WFE) are essential for human well-being. This study highlights the importance of NBS in terms of water, food, and energy. A set of on-site NBS that includes permeable pavements, plant microbial fuel cells, bio-filtration basins, and rain gardens is used to determine the contribution of NBS to the environmental and economic development of urban environments. The results of this study show that NBSs benefit an urban environment in terms of water treatment, stormwater retention, food production and energy generation, carbon sequestration, pollination, sedimentation retention, and cultural services dimension. This research highlights an urgent need for the integration of water, food, and energy plans to ensure that NBSs contribute to the environment and for the conservation of ecosystem services.
- Published
- 2022
26. 474. Differences In Clinical Manifestation, Prognostic Factors, and Outcomes Between Patients With Community-onset And Nosocomial Candidemia
- Author
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Yung-chun Chen and Chao-chin Chang
- Subjects
Infectious Diseases ,Oncology - Abstract
Background Candidemia is an invasive and deadly infectious disease. The associated risk factors of candidemia include immunosuppression, broad-spectrum antibiotics, catheters, glucocorticoids, critical illness, surgery, neonates, previous candida colonization, and illicit drug use. In previous studies, the characteristic of community-onset candidemia was distinct from nosocomial candidemia. Methods We selected patients who were admitted for equal or more than two days in Taichung Veterans General Hospital of Taiwan from 2015 to 2018 with electronic medical charts. The diagnosis of candidemia was defined as Candida species identified in blood cultures by commercial identification systems. We applied Kaplan-Meier survival curves with a log-rank test and built multivariate Cox proportional-hazards models for risk factors associated with in-hospital mortality. The purpose of this study is to investigate the difference in the characteristics, outcomes, and associated risks of death between community-onset and nosocomial candidemia. Results A total of 339 patients were included for analysis. The incidence was 1.50 per 1000 admission person-years. 64.60% of patients were male, and the mean age was 64.24-year-old. The characteristics of patients were similar in both groups except for the status of port-A, glucocorticoid usage, and diabetes mellitus. In the community-onset group, a higher proportion of C. glabrata and C. parapsilosis, but fewer C. albicans and C. tropicalis were identified than in the nosocomial group. The all-cause mortality rate was 55.75%. Multivariate Cox proportional-hazards model showed that nosocomial (hazard ratio; HR, 1.96; 95CI, 1.291 - 2.97 ; p =0.002), glucocorticoids within seven days before candidemia (HR, 1.68; 95CI, 1.21 -2.32, p = 0.002), and septic shock (HR, 1.85; 95CI, 1.292 - 2.641, p < 0.001) were associated with poor outcome whereas treatment with an echinocandin within two days after candidemia was a protective factor (HR, 0.65; 95CI, 0.466 - 0.911, p = 0.012). Survival curves analysis between community-onset candidemia and nosocomial candidemia A log-rank test was applied to assess the statistical significance, and a p-value less than 0.05 was considered statistically significant. Conclusion In conclusion, candidemia is a lethal disease with a better outcome noted in those with community-onset candidemia. Species diversity existed in both groups, and Early initiation of echinocandin therapy within two days could reduce 35% mortality. Disclosures All Authors: No reported disclosures.
- Published
- 2022
27. Multimedia Privacy Protection System for Mobil Environments.
- Author
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Chih-Yang Lin, Chao-Chin Chang, Yi-Hui Chen, and Panyaporn Prangjarote
- Published
- 2011
- Full Text
- View/download PDF
28. An Improved Digital Watermarking Scheme in the Domain of Vector Quantization.
- Author
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Chao-Chin Chang, Chin-Shiuh Shieh, Jeng-Shyang Pan 0001, Bin-Yih Liao, and Lin Hong
- Published
- 2006
- Full Text
- View/download PDF
29. A Global Study of Screening Intensity and Economic Status on Epidemic Control Performance During Various Epidemic Periods of COVID-19 Mutant Strains
- Author
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Chia-Lin Chang and Chao-chin Chang
- Abstract
This study analyzed global data and provides insights how economic conditions in various countries associate with epidemic control measures during different epidemic periods by mutant strains. In this study, the elasticity coefficient is estimated through a log-log model, which represents the percent change of the confirmed case number with respect to a percent change of the total number of screening tests in a country for epidemic control. The elasticity estimate was used to show the effectiveness of epidemic control by community screening. The 7-day rolling data of screening tests and confirmed cases from the Our World in Data (OWID) database for the pandemic periods of Alpha strain in 2020, Delta strain in 2021, and Omicron strain in 2022, suggests that the magnitude of the elasticity was associated with the economic condition of a country. Compared with the result s during either Alpha - or Delta- pandemic period, the Omicron pandemic has a much higher estimated elasticity coefficient of 1.317 (Alpha: 0.827 and Delta: 0.885). Further comparison of economic conditions that were classified by quartile ranges, the result reveals the elasticity in countries with GDP per capita between $11,354 and $26,651 or GDP per capita above $26,651 is statistically significantly lower than that in countries having GDP per capita below $3,335. The findings of this study imply that the performance of epidemic control in a country is not only dependent on epidemiological measures applied, but is also influenced by the economic condition of a country.
- Published
- 2022
30. A New Steganography Scheme in the Domain of Side-Match Vector Quantization.
- Author
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Chin-Shiuh Shieh, Chao-Chin Chang, Shu-Chuan Chu, and Jui-Fang Chang
- Published
- 2005
- Full Text
- View/download PDF
31. Developing a novel computer numerical control-fabricated laminar-flow microfluidic microbial fuel cells as the bioelectrochemical sensor and power source: Enrichment, operation, and Cr(VI) detection
- Author
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Chao-Chin Chang, Shiue-Lin Li, Zhong-Xian Wu, and Chang-Ping Yu
- Subjects
Electrochemistry ,Biomedical Engineering ,Biophysics ,General Medicine ,Biotechnology - Published
- 2023
32. Increased hip adductor activation during sit-to-stand improves muscle activation timing and rising-up mechanics in individuals with hemiparesis
- Author
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Wei-Chun Hsu, Chao-Chin Chang, Yi-Jia Lin, Kuan-Nien Chou, Fu-Chi Yang, Li-Shan Chang, Ying-Yi Liao, and Kuei-Chen Lee
- Subjects
Biophysics ,Neuroscience (miscellaneous) ,Neurology (clinical) - Published
- 2023
33. Effect of administering dexmedetomidine with or without atropine on cardiac troponin I level in isoflurane-anesthetized dogs
- Author
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Hsien-Chi Wang, Chao-Chin Chang, Kai-Yueh Liao, Hsin-Yu Huang, and Wei-Yau Shia
- Subjects
Atropine ,Cardiac troponin ,cardiac troponin I ,medicine.medical_treatment ,canine ,Dogs ,Troponin I ,medicine ,Animals ,myocardial injury ,Dexmedetomidine ,Propofol ,Saline ,Isoflurane ,Full Paper ,General Veterinary ,business.industry ,dexmedetomidine ,Anesthesia ,Surgery ,Premedication ,business ,medicine.drug - Abstract
We aimed to determine whether dexmedetomidine administration with or without atropine increases cardiac troponin I (cTnI) level in healthy dogs. We hypothesized that 10 µg/kg dexmedetomidine + atropine increases the cTnI level, whereas 5 µg/kg dexmedetomidine + atropine does not. Eighteen healthy, pet dogs that underwent an orthopedic surgery or ovariohysterectomy were included in this study. The dogs were randomly assigned to atropine (0.02 mg/kg)–dexmedetomidine (10 µg/kg), saline–dexmedetomidine (10 µg/kg), and atropine (0.02 mg/kg)–dexmedetomidine (5 µg/kg) groups. Each dog was premedicated with atropine or saline intramuscularly (IM). After 10 min, they were IM injected with dexmedetomidine (10 or 5 µg/kg)–morphine (0.5 mg/kg)–midazolam (0.2 mg/kg). Following this, anesthesia was induced after 10 min with propofol and maintained with isoflurane in 100% oxygen. The median plasma cTnI level at 6, 12 and 24 hr after premedication was significantly higher than that at baseline. The cTnI level in the atropine–dexmedetomidine (10 µg/kg) group was significantly higher than that in the saline–dexmedetomidine (10 µg/kg) and atropine–dexmedetomidine (5 µg/kg) groups at 6 and 12 hr after premedication. The cTnI level returned to normal within 72 hr after premedication in all groups. The administration of atropine in combination with 10 µg/kg dexmedetomidine increased the cTnI level, indicating subclinical myocardial damage.
- Published
- 2021
34. The impact of fibropapillomatosis on clinical characteristics, blood gas, plasma biochemistry, and hematological profiles in juvenile green turtles ( Chelonia mydas)
- Author
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Li Tsung Hsien and Chao-Chin Chang
- Subjects
0106 biological sciences ,biology ,Fibropapillomatosis ,010604 marine biology & hydrobiology ,Aquatic Science ,Oceanography ,biology.organism_classification ,01 natural sciences ,Blood cell ,medicine.anatomical_structure ,Sea turtle ,Biochemistry ,medicine ,Gas plasma ,Juvenile ,Base excess ,Carapace ,Hemoglobin - Abstract
Fibropapillomatosis (FP) is a tumor- forming disease that afflicts all marine turtles and is the most common in green turtles (Chelonia mydas). In this study, the morphometric characteristics, blood gas, biochemistry, and hematological profiles of 28 (6 FP-positive and 22 FP-negative) green turtles from the coast of Taiwan were investigated. The results indicated that body weight ( P < 0.001) and curved carapace length (CCL; P < 0.001) in green turtles with FP were significantly higher than in turtles without FP. Furthermore, green turtles with FP had a significantly lower value of hemoglobin (HB; P = 0.010) and packed cell volume (PCV; P = 0.005) than turtles without FP. Blood cell counts of white blood cells (WBC; P = 0.008) and lymphocytes ( P = 0.022) were observed with significant difference; green turtles with FP had lower counts than turtles without FP. In addition, turtles with FP had significantly higher pH ( P = 0.036), base excess in extracellular fluid (BEecf; P = 0.012), bicarbonate (HCO3– ; P = 0.008), and total carbon dioxide (TCO2 ; P = 0.025) values than turtles without FP. The findings of this study provide valuable clinical parameters for the medical care of the species in sea turtle rehabilitation centers and help us to understand the physiological response of green turtles to different tumor-forming conditions.
- Published
- 2020
35. Controlled Tactile and Vibration Feedback Embedded in a Smart Knee Brace
- Author
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Yung-Hsiang Lee, Li-Fong Lin, Chao-Chin Chang, Zhong-Rong Hsieh, Yi-Jia Lin, Chih-Yi Tsai, Wei-Chun Hsu, Jia-Lin Wu, and Tommy Sugiarto
- Subjects
030506 rehabilitation ,medicine.medical_specialty ,medicine.diagnostic_test ,Vastus medialis ,business.industry ,030229 sport sciences ,Electromyography ,Knee Joint ,Brace ,Computer Science Applications ,Human-Computer Interaction ,Vibration ,03 medical and health sciences ,0302 clinical medicine ,Physical medicine and rehabilitation ,Hardware and Architecture ,Medicine ,Electrical and Electronic Engineering ,Muscle activity ,0305 other medical science ,business - Abstract
The vastus medialis oblique (VMO) and vastus lateralis (VL) muscles at the knee joint play important roles for coordination, stability, and posture control. However, no currently available device records muscle activity while simultaneously warning users regarding abnormal muscle activity. This study used a commercialized electromyography sensors placed on the VL and VMO to monitor muscle activity while triggering warnings and vibration feedback to the muscles when an undesired ratio of VL/VMO muscular activation level set by current study was detected. The system was able to trigger alarms when the subject performed moderate-intensity activity and avoid triggering during low-intensity activity. Further research is needed of high-intensity exercises, such as running or weightlifting, to determine the effects of increased muscle activity on the judgment of the undesired ratio of VL/VMO muscular activation level using the device reported in the current study.
- Published
- 2020
36. Do harder midsoles facilitate propulsion and do softer midsoles increase shock attenuation during taking-off and landing of scissor jump?
- Author
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Yi-Jia Lin, Tzyy-Yuang Shiang, Tsung-Han Liu, Yung-Hsiang Lee, Shih-Chi Lee, Wei-Chun Hsu, and Chao-Chin Chang
- Subjects
Physical Therapy, Sports Therapy and Rehabilitation ,Orthopedics and Sports Medicine - Abstract
To determine the influence of midsole hardness on ground reaction force (GRF) features during badminton scissor jump takeoff and landing and the interactive effect of midsole hardness with playing and nonplaying limbs, data were collected from badminton athletes who performed scissor jumps while wearing shoes with two levels of midsole hardness. Temporal-spatial and GRF variables were calculated. Measurements of the soft and hard midsole conditions for playing versus non-playing sides were compared using two-way repeated measure analyses of variance. The playing and non-playing limbs showed different GRF features while performing scissor jump. During takeoff, no significant differences between the soft and hard midsole conditions were identified for the jump height in any of the GRF variables. During landing, the cushioning capacity might be affected by harder midsole indicated by higher vertical impact peak (p = 0.008). Meanwhile, the longer time-to-vertical impact peak (p = 0.007) and the lower loading rate of the vertical impact peak (p = 0.013) may be plausible indicators for cushioning. Current study indicated the playing-limb consistently showed dominance on both the propulsion and shock attenuation behaviours during scissor jump and that, for the footwear selection between 62C and 68C midsoles, expectation would be more on effects on landing characteristics than on propulsion performance.
- Published
- 2022
37. Trapa natans husk-derived carbon as a sustainable electrode material for plant microbial fuel cells
- Author
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Fang-Yi Lin, Yao-Yu Lin, Hsin-Tien Li, Chung-Sheng Ni, Chao-I Liu, Chung-Yu Guan, Chao-Chin Chang, Chang-Ping Yu, Wei-Shan Chen, Tzu-Yin Liu, and Han-Yi Chen
- Subjects
Plant microbial fuel cell ,General Energy ,WIMEK ,Mechanical Engineering ,Biowaste-derived carbon ,Environmental Technology ,Trapa natans husk ,Milieutechnologie ,Building and Construction ,Management, Monitoring, Policy and Law ,Renewable carbon electrode - Abstract
The plant microbial fuel cell (PMFC) is a novel technology that can be used to convert solar energy into electrical energy using microbes in the rhizosphere of plants. However, low power density is one of the major obstacles to the development of PMFCs. In this study, we show that the Trapa natans husk-derived carbon (TNH-GBG) is a potential sustainable electrode material for the Canna indica-based PMFCs. The results of the polarization curve measurements showed that the maximum power density of the PMFC utilizing the TNH-GBG-coated graphite felt as the electrodes could reach 55 mW m−2. This was considerably higher than that of the PMFC with pure graphite felt electrodes (22 mW m−2). The enhanced power density of the TNH-GBG was attributed to its high surface area and high content of oxygen-containing groups on the surface of carbon, which enhanced the hydrophilicity and possibly enhanced the microbial attachment, thereby reducing the activation polarization. Furthermore, when the PMFC (with TNH-GBG-coated graphite felt electrodes) was connected to an external load (1000 Ω), a power density of 20 mW m−2 was maintained for over 10 days, which is also higher than that of the PMFC with the graphite felt electrodes. The PMFC with the TNH-GBG-coated graphite felt electrodes shows a similar performance with the one with commercial activated carbon-coated graphite felt electrodes. However, the price of the TNH-GBG is only one-fifth of the commercially activated carbon. Furthermore, the TNH-based PMFC-supercapacitor system was assembled, and it demonstrated that TNH is a potential low-cost electrode material for sustainable power generation-energy storage applications.
- Published
- 2022
38. Bat-Related Zoonoses
- Author
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Bruno B. Chomel, Henri-Jean Boulouis, Chao-chin Chang, Alvaro Aguilar Setién, and Matthew J. Stuckey
- Published
- 2022
39. Employment of osmotic pump as a novel feeding system to operate the laminar-flow microfluidic microbial fuel cell
- Author
-
Thanh Ngoc-Dan Cao, Chao-Chin Chang, Hussnain Mukhtar, Qian Sun, Yan Li, and Chang-Ping Yu
- Subjects
Employment ,Osmosis ,Bioelectric Energy Sources ,Microfluidics ,Sodium Chloride ,Biochemistry ,General Environmental Science - Abstract
Laminar-flow microfluidic microbial fuel cell (LMMFC) has attracted attention due to the advantage of the liquid-liquid interface between anolyte and catholyte without the use of membrane as a separator resulting in less fabrication cost. Unlike previous studies of LMMFC using syringe pumps, this study proposes the use of osmotic pumps to feed anolyte and catholyte in the microchannel without any additional power supply. The osmotic pump was constructed with two cylindrical chambers separated by a forward osmosis membrane, with the initial draw solution concentration of 90 g l
- Published
- 2022
40. Potential Risk Factors Associated with Infection with Bovine Leukaemia Virus in Dairy and Beef Cattle in Taiwan
- Author
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Shih-Te Chuang, Wei-Li Hsu, Wen-Yu Chin, Yi-Chen Chen, and Chao-Chin Chang
- Subjects
Microbiology (medical) ,Veterinary medicine ,viruses ,animal diseases ,Culling ,Beef cattle ,Virus ,Article ,beef cattle ,immune system diseases ,Immunology and Allergy ,risk factors ,dairy cows ,Molecular Biology ,heifer ,General Immunology and Microbiology ,biology ,Transmission (medicine) ,virus diseases ,biochemical phenomena, metabolism, and nutrition ,biology.organism_classification ,Deltaretrovirus ,Enzootic Bovine Leukosis ,bovine leukaemia virus ,Infectious Diseases ,Herd ,Medicine ,Bovine leukaemia - Abstract
Bovine leukaemia virus (BLV), which is classified as a Deltaretrovirus, is the aetiologic agent of enzootic bovine leukosis (EBL), a chronic lymphoproliferative disorder with a worldwide distribution. EBL is widespread in dairy herds and causes a direct economic impact due to reduced milk production and the early culling of BLV-infected cattle. The BLV infection status in Taiwan remains largely unknown; a high prevalence of BLV in dairy cows was recently revealed. The present study further investigated BLV infections in beef cattle. Surprisingly, the prevalence of BLV proviral DNA was as low as 11.8% (23/195), which is significantly lower than that noted in dairy cows, which was 42.5% (102/240) (p < 0.001). Factors associated with BLV infections were subsequently investigated. Due to the differences in herd management, an analysis of risk factors for a BLV infection was independently conducted in these two sectors. Several factors associated with a BLV infection were identified. Age was significantly associated with BLV infection status in dairy cows (p < 0.001) but not in beef cattle. A high prevalence of BLV was observed in cattle >15.5 months old (57.8%) compared with those ≤15.5 months old (11.4%). Moreover, after stratification analysis, based on the critical age of 15.5 months, as determined by the receiver operating characteristic (ROC) curve, a significantly higher BLV prevalence was demonstrated in lactating dairy cows, cattle undergoing bull breeding, heifers at older ages, and those undergoing routine rectal palpation. Due to the high prevalence of BLV in Taiwan, the development of an effective control program, based on the identified risk factors, is important for interrupting the routes of BLV transmission within herds.
- Published
- 2021
41. A stochastic assessment to quantify the risk of introduction of African swine fever virus to Taiwan via illegal pork products carried by international travellers
- Author
-
Chao-Chin Chang, Chun-Yao Chiu, Cheng-Yao Yang, Chin-Cheng Chou, Yi-Lun Tsai, and Kendy Tzu-Yun Teng
- Subjects
Risk analysis ,Swine ,Taiwan ,African swine fever virus ,Environmental health ,Animals ,African Swine Fever ,China ,Risk management ,Swine Diseases ,General Veterinary ,General Immunology and Microbiology ,biology ,business.industry ,Stochastic assessment ,General Medicine ,biology.organism_classification ,African Swine Fever Virus ,Confidence interval ,Meat Products ,Red Meat ,Geography ,Relative risk ,Pork Meat ,Risk assessment ,business - Abstract
The current study quantified the risk of releasing African swine fever virus (ASFV) into Taiwan from pork products illegally carried by international travellers from 157 countries or territories through six international airports and three international seaports. The association between various factors and the number of pork products detected by the border control authorities was also examined. The risk was estimated with a stochastic process after modelling the number of undetected illegal pork products, probability of pork product detection at international airports and seaports and probability of ASFV contamination of pork products from various countries. The overall annual probability of ASFV release to Taiwan was estimated to be 1 [95% confidence interval (CI): 1-1] under no enhanced mitigation measures. All the median airport-level risks were higher than .921, and four of them reached 1. The total annual risk was .570 (95% CI: .109-.937) for international seaports. The country or territory level risk was estimated to be 1 for Vietnam, China, Hong Kong, the Philippines and South Korea, .999 (95% CI: .628-1) for Macao and .967 (95% CI: .359-1) for Indonesia. After the total number of travellers was factored in, the number of detected illegal pork products was the highest in January and February, and travellers from Vietnam [risk ratio to Japan (RR): 80.45; 95% CI: 58.68-110.3], the Philippines (RR: 37.67; 95% CI: 26.9-52.74) and Cambodia (RR: 28.39; 95% CI: 12.69-63.51) were most likely to bring pork products to Taiwan. Our study indicated a high risk of ASFV introduction through international travellers and also identified the factors associated with the risk. This information can be used as empirical evidence for cost-effective risk mitigation practices.
- Published
- 2021
42. Enhanced removal of ammonium from the aqueous solution using a high-gravity rotating packed bed loaded with clinoptilolite
- Author
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Chia-Chi Chang, Chao-Chin Chang, Yang Wu, Chang-Ping Yu, Ching-Yuan Chang, Jiang-Wei Li, and Chung-Yu Guan
- Subjects
Packed bed ,Clinoptilolite ,Aqueous solution ,Filtration and Separation ,02 engineering and technology ,021001 nanoscience & nanotechnology ,Analytical Chemistry ,chemistry.chemical_compound ,Adsorption ,020401 chemical engineering ,Distilled water ,chemistry ,Chemical engineering ,Mass transfer ,Specific surface area ,Ammonium ,0204 chemical engineering ,0210 nano-technology - Abstract
A novel method for efficiently removing low levels of ammonium contamination from the aqueous solution using clinoptilolite in a high-gravity rotating packed bed (HGRPB) was developed. Our batch experiments have shown that irregular clinoptilolite gave better ammonium removal efficiencies due to higher specific surface area, and the adsorption data fitted better using pseudo-second-order adsorption kinetics than pseudo-first-order adsorption kinetics. HGRPB experiments have demonstrated that increasing rotating speeds will improve ammonium removal due to higher mass transfer of ammonium between the liquid and solid phases. The removal efficiency was 90% at the end of the fifth cycle (∼54 min) at a rotating speed of 1500 rpm using irregular clinoptilolite, with an initial ammonium concentration of 12.5 mg-N/L in distilled water and a flow rate of 180 mL/min. However, the removal efficiency was obviously lower in pond water than that in distilled water because of possible competitive adsorption of other cations in the pond water, suggesting modification of clinoptilolite to increase its selectivity for ammonium will be critical. This study has demonstrated the potential of using clinoptilolite in the HGRPB system to remove low levels of ammonium contamination in water and warrants the research need of HGRPB for biphasic liquid–solid adsorption processes.
- Published
- 2019
43. Human chorionic gonadotropin (hCG)-induced ovulation occurs later but with equal occurrence in lactating dairy cows: comparing hCG and gonadotropin-releasing hormone protocols
- Author
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Chao-Chin Chang, Tsung-Ching Liu, Jacky Peng-Wen Chan, Chia-Tang Ho, and Kuang-Po Li
- Subjects
Ovulation ,endocrine system ,medicine.medical_specialty ,Time Factors ,media_common.quotation_subject ,Prostaglandin ,Gonadotropin-releasing hormone ,Chorionic Gonadotropin ,Human chorionic gonadotropin ,Gonadotropin-Releasing Hormone ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Induced ovulation ,Internal medicine ,Animals ,Humans ,Lactation ,Human chorionic gonadotropin (hCG) ,Medicine ,Insemination, Artificial ,Progesterone ,reproductive and urinary physiology ,030304 developmental biology ,media_common ,Estrous cycle ,0303 health sciences ,030219 obstetrics & reproductive medicine ,Gonadotropin-releasing hormone (GnRH) ,urogenital system ,business.industry ,Reverse order ,Dairying ,Treatment Outcome ,Endocrinology ,chemistry ,Ovulation time ,Cattle ,Female ,Original Article ,Animal Science and Zoology ,Estrus Synchronization ,business ,hormones, hormone substitutes, and hormone antagonists ,Hormone - Abstract
This study assessed the effects of two hormones, human chorionic gonadotropin (hCG) and gonadotropin-releasing hormone (GnRH), on ovulatory responses during different diestrous stages in lactating dairy cows. Estrous cycles of 21 cows were synchronized and were enrolled in stage 1 of the experiment. The cows were treated with a prostaglandin (PG) F2α analog either 9 to 10 days [mid-diestrus (MD) group] or 5.5 to 6.5 days [early-diestrus (ED) group] after synchronized ovulation (day 0 = first PGF2α administration). On day 2, the cows were administrated 250 μg GnRH or 3000 IU hCG. Ovulation was determined every 2 h from 24 to 36 h after GnRH or hCG administration, and then every 4 h up to 72 h until ovulation. Cows in stage 2 were administered these treatments in the reverse order. The results indicated that average ovulation times in cows treated with GnRH in the MD group (GnRH-MD group) and cows treated with GnRH in the ED group (GnRH-ED group) were 30.0 ± 1.0 h and 28.8 ± 0.4 h, respectively. However, ovulation times for cows treated with hCG in the MD group (hCG-MD group) and cows treated with hCG in the ED group (hCG-ED group) were 35.8 ± 4.6 h and 32.8 ± 2.2 h, respectively, and ovulation occurred significantly later in the hCG-treated groups than in the GnRH-treated groups. In summary, we found that hCG-induced ovulation occurred later than GnRH-induced ovulation regardless of different diestrous peroids; however, the two treatments did not differ in terms of percentage of ovulation.
- Published
- 2019
44. Impact of cathodic biofouling on the uneven performance of individual units and scale-up power efficiency in parallel-connected air-cathode microbial fuel cells
- Author
-
Chao-Chin Chang and Chang-Ping Yu
- Subjects
Renewable Energy, Sustainability and the Environment ,Energy Engineering and Power Technology ,Electrical and Electronic Engineering ,Physical and Theoretical Chemistry - Published
- 2022
45. Evaluation of long-term performance of plant microbial fuel cells using agricultural plants under the controlled environment
- Author
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Chao Chin Chang, Wei Shan Chen, Natagarn Tongphanpharn, Chung-Yu Guan, and Chang-Ping Yu
- Subjects
Economics and Econometrics ,Environmental Engineering ,Microbial fuel cell ,Population ,Biomass ,Management, Monitoring, Policy and Law ,Exoelectrogen ,Biochar ,Microbial community ,Environmental Chemistry ,education ,education.field_of_study ,Rhizosphere ,WIMEK ,Plant microbial fuel cells ,Compost ,Agricultural plant ,General Business, Management and Accounting ,Rhizodeposition ,Soil conditioner ,Agronomy ,Microbial population biology ,Environmental science ,Environmental Technology ,Milieutechnologie - Abstract
Plant microbial fuel cell (PMFC) is a novel bioelectrochemical system that integrates the photosynthetic reaction from the living plants to generate electricity via microorganisms at the rhizosphere of the plant roots. To elucidate factors which are critical for PMFCs operation, this study investigated the effects of different plants and soil conditioners on PMFCs performance. The experiment was done in a controlled lighting incubator at 27 °C and 75% of humidity for 200 days. Two waterlogged agricultural plants, paddy (Oryza sativa) and water bamboo (Zizania latifolia), were applied in PMFC systems; besides, the compost made from food waste and biochar made from waste wood biomass were selected as soil conditioners. Results showed that varied electricity generation during the operation was observed for different PMFC systems, but the Paddy-PMFC with compost (PC-PMFC) demonstrated relatively more stable electricity generation for 200 days (15.57 ± 8.15 mW/m2) and significantly higher voltage production, reaching the highest output voltage of 894.39 ± 53.44 mV (34.78 mW/m2) among all PMFCs. It was observed that the output voltage of PMFCs was significantly higher than soil-MFC, and the output voltage of P-PMFC was significantly higher than water bamboo-PMFC, implying rhizodeposition of different plant roots could be important for the performance of electricity production in PMFCs. However, Paddy-PMFC with biochar (PB-PMFC) demonstrated significantly lower voltage production than those without biochar, likely due to the inhibitory effect of biochar made by waste wood biomass. The taxonomic identification of the microbial community at the anode showed that Proteobacteria was the most abundant phylum, and Gammaproteobacteria and Deltaproteobacteria were the most dominant classes of the microbial communities. Further analysis showed that the PB-PMFC had the most distinct anode microbial community structure, with the predominant family of Gallionellaceae, instead of Geobacteraceae as in other PMFCs. Geobacter was the major genus of the microbial population in all samples and showed the highest relative abundance in PC-PMFC, suggesting that it was the main exoelectrogen involved in electricity generation in our PMFC systems. This study has demonstrated that the power output of PMFC systems can be influenced by different agricultural plants and soil conditioners made from waste biomass, which warrants the need to better understand the underlying interaction among the anode microbial community, the rhizodeposition of different plant roots, and electrochemical mechanisms for the future scale-up application of PMFCs. Graphic abstract: [Figure not available: see fulltext.]
- Published
- 2021
46. Antimicrobial-resistance profiles of gram-negative bacteria isolated from green turtles (Chelonia mydas) in Taiwan
- Author
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Chao-Chin Chang, Tsung-Hsien Li, and Ming-An Tsai
- Subjects
Veterinary medicine ,010504 meteorology & atmospheric sciences ,Health, Toxicology and Mutagenesis ,Endangered species ,Taiwan ,Environmental pollution ,010501 environmental sciences ,Toxicology ,01 natural sciences ,law.invention ,Antibiotic resistance ,law ,Gram-Negative Bacteria ,medicine ,Animals ,Turtle (robot) ,0105 earth and related environmental sciences ,biology ,Bacteria ,Spiramycin ,General Medicine ,biology.organism_classification ,Antimicrobial ,Pollution ,Vibrio ,Turtles ,Sea turtle ,Environmental Pollution ,medicine.drug - Abstract
The green turtle (Chelonia mydas) is listed as a globally endangered species and is vulnerable to anthropogenic threats, including environmental pollution. This study investigated the antimicrobial resistance of Gram-negative bacteria isolated from wild green turtles admitted to a sea turtle rehabilitation center in Taiwan. For this investigation, cloacal and nasal swab samples were collected from 28 green turtles between 2018 and 2020, from which a total of 47 Gram-negative bacterial isolates were identified. Among these, Vibrio spp. were the most dominant isolate (31.91%), and 89.36% of the 47 isolates showed resistance to at least one of 18 antimicrobial agents tested. Isolates resistant to one (6.38%), two (8.51%), and multiple (74.47%) antimicrobials were observed. The antimicrobial agents to which isolates showed the greatest resistance were penicillin (74.47%), followed by spiramycin, amoxicillin, and cephalexin. The antimicrobial-resistance profiles identified in this study provide useful information for the clinical treatment of sea turtles in rehabilitation facilities. The results of our study also imply that wild green turtles may be exposed to polluting effluents containing antimicrobials when the turtles traverse migratory corridors or forage in feeding habitats. To benefit sea turtle conservation, future research should focus on (1) how to prevent pollution from antimicrobials in major green turtle activity areas and (2) identifying sources of antimicrobial-resistant bacterial strains in coastal waters of Taiwan.
- Published
- 2020
47. Multiple locus variable number tandem repeat analysis for the characterization of wild feline Bartonella species and subspecies
- Author
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Allen Jack, Rickie W. Kasten, Haddad Nadia, Henri Jean Boulouis, Bruno B Chomel, Chao Chin Chang, Martine Monteil, Girault Guillaume, Durand Benoit, Biologie moléculaire et immunologie parasitaires et fongiques (BIPAR), École nationale vétérinaire d'Alfort (ENVA)-Laboratoire de santé animale, sites de Maisons-Alfort et de Dozulé, Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), University of California, Laboratoire de santé animale, sites de Maisons-Alfort et de Dozulé, Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), National Chung Hsing University (NCHU), Elsevier, and École nationale vétérinaire - Alfort (ENVA)-Laboratoire de santé animale, sites de Maisons-Alfort et de Dozulé
- Subjects
Bartonella ,Animals, Wild ,Minisatellite Repeats ,Multiple Loci VNTR Analysis ,Subspecies ,Cat Diseases ,Microbiology ,California ,South Africa ,03 medical and health sciences ,Dogs ,Genus ,Bartonella Infections ,Animals ,Humans ,MESH: Animals, Wild ,Dog Diseases ,Allele ,Phylogeny ,Disease Reservoirs ,030304 developmental biology ,Genetics ,0303 health sciences ,MESH: Disease Reservoirs ,Bartonella henselae ,Wild felids ,General Veterinary ,biology ,MESH: Bartonella Infections ,030306 microbiology ,Strain (biology) ,MLVA ,General Medicine ,biology.organism_classification ,bacterial infections and mycoses ,Namibia ,Bacterial Typing Techniques ,Variable number tandem repeat ,MESH: Bacterial Typing Techniques / methods ,[SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology ,MESH: Minisatellite Repeats ,Cats - Abstract
International audience; Bartonella genus includes an increasing number of species and subspecies, especially among wild felids, the positioning of which, with regards to the zoonotic species Bartonella henselae, is important to determine.The aim of this study was to test the ability of a molecular typing technique to distinguish between various Bartonella isolates obtained from four different species of free-ranging and captive wild felids and to identify key profiles or markers allowing differentiating them from each other and/or from B. henselae or B. koehlerae.A molecular typing technique for B. henselae based on the polymorphism of variable number tandem repeat units (VNTR) called MLVA (Multiple Locus VNTR Analysis) was applied to 24 Bartonella isolates from free-ranging or captive wild felids, 19 of which were obtained from California and five from three countries in Southern Africa, and compared with 49 B. henselae isolates from cats, dog or humans from the United States including the human ATCC (American Type Culture Collection) reference strain, B. henselae Houston 1.MLVA allowed distinguishing Bartonella isolates from wild felids from either B. henselae or B. koehlerae. We confirmed infection of semi-captive cheetahs with an isolate similar to a Californian bobcat isolate. MLVA also confirmed the unique profile of a free-ranging cheetah isolate from Namibia.Specific profiles were observed making MVLA a useful identification/classification tool of these wild felid isolates and suggesting that they are highly adapted to a specific feline reservoir. Finally, circulation of B. henselae isolates between domestic cats, wild felids and humans is likely occurring, based on the close allelic profiles of some isolates.
- Published
- 2020
48. Identification of Chelonid herpesvirus 5 (ChHV5) in endangered green turtles (Chelonia mydas) with fibropapillomatosis in Asia
- Author
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Chao-Chin Chang, Thierry M. Work, Wei-Li Hsu, Yu-Ching Lan, Cheng-Tsung Tseng, Tsung-Hsien Li, and George H. Balazs
- Subjects
Fibropapillomatosis ,Phylogenetic tree ,040301 veterinary sciences ,Intranuclear Inclusions ,0402 animal and dairy science ,Endangered species ,Zoology ,Molecular evidence ,04 agricultural and veterinary sciences ,Aquatic Science ,Histopathological examination ,Biology ,Oceanography ,040201 dairy & animal science ,0403 veterinary science ,Panzootic - Abstract
Fibropapillomatosis (FP), a debilitating tumor disease of sea turtles, was first identified in green turtles [Chelonia mydas (Linnaeus, 1758)] in Florida in 1938. In recent decades, FP has been observed globally and is an emerging panzootic disease in sea turtles. However, few reports of FP in Asia exist. Here, we provide the first evidence of Chelonid herpesvirus 5 (ChHV5) DNA associated with FP in endangered green turtles from Taiwan, through molecular characterization, phylogenetic analysis, and histopathological examination. In our study, ChHV5 was successfully detected by PCR in the FP tumor lesions of green turtles. The sequences were found to be consistent with those of tumor-inducing viruses shown to affect sea turtles in the other parts of the world. ChHV5 RNA from the FP tissues was further detected by RT-PCR, indicating active replication of the viruses inside FP tumors. In addition to the molecular evidence of ChHV5 in FP, epidermal intranuclear inclusions were identified in tumor lesions upon histopathological examination. This further suggests that ChHV5 should be in a transcriptionally active (i.e., non-latent) state in FP tumors of affected green turtles. The phylogenetic tree revealed that ChHV5 from the green turtles in Taiwan were closest to the ChHV5 from Hawaii, Puerto Rico, and Sao Tome. For conservation of endangered sea turtles, ChHV5 should be considered an emerging virus, which threatens sea turtles in marine waters in Asia.
- Published
- 2017
49. The prevalence of Anaplasma platys and a potential novel Anaplasma species exceed that of Ehrlichia canis in asymptomatic dogs and Rhipicephalus sanguineus in Taiwan
- Author
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Chao-Chin Chang, Tien-Huan Hsu, Chi-Chung Chou, Yumi Yuasa, and Yi-Lun Tsai
- Subjects
0301 basic medicine ,Anaplasma platys ,General Veterinary ,biology ,Ehrlichia canis ,Ehrlichia ,Rhipicephalus sanguineus ,030231 tropical medicine ,030106 microbiology ,Tick ,bacterial infections and mycoses ,biology.organism_classification ,medicine.disease ,Anaplasma phagocytophilum ,Virology ,03 medical and health sciences ,0302 clinical medicine ,parasitic diseases ,medicine ,Anaplasma ,Anaplasmosis - Abstract
Canine anaplasmosis is regarded as an infection by Anaplasma platys rather than zoonotic Anaplasma phagocytophilum in subtropical areas based on the assumption that the common dog tick species is Rhipicephalus sanguineus, which transmits E. canis and presumably A. platys. We investigated asymptomatic dogs and dog ticks from 16 communities in Nantou County, Taiwan to identify common dog tick species and to determine the prevalence of Anaplasma and Ehrlichia spp. Of total 175 canine blood samples and 315 ticks, including 306 R. sanguineus and 9 Haemaphysalis hystricis, 15 dogs and 3 R. sanguineus ticks were positive for E. canis, while 47 dogs and 71 R. sanguineus ticks were positive for A. platys, via nested PCR for 16S rDNA and DNA sequencing of selected positive amplicons. However, among the dogs and ticks that were positive to A. platys 16S rDNA, only 20 dogs and 11 ticks were positive to nested PCR for A. platys groEL gene. These results revealed the importance of searching for novel Anaplasma spp. closely related to A. platys in dogs and ticks. Seropositivity to a commercial immunochromatographic test SNAP 4Dx Anaplasma sp. was not significantly associated with PCR positivity for A. platys but with infestation by ticks carrying A. platys (P
- Published
- 2017
50. Indigenous Wildlife Rabies in Taiwan: Ferret Badgers, a Long Term Terrestrial Reservoir
- Author
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Hsin-Fu Liu, Yu Ching Lan, Yi Ming Arthur Chen, Tzai-Hung Wen, Bruno B Chomel, Chao Chin Chang, Chung-Yuan Huang, and Pei Fen Lee
- Subjects
0301 basic medicine ,Genotype ,Article Subject ,Rabies ,040301 veterinary sciences ,Taiwan ,Wildlife ,lcsh:Medicine ,medicine.disease_cause ,General Biochemistry, Genetics and Molecular Biology ,Coalescent theory ,0403 veterinary science ,03 medical and health sciences ,Mustelidae ,medicine ,Animals ,Clade ,Phylogeny ,General Immunology and Microbiology ,Phylogenetic tree ,Ecology ,lcsh:R ,Rabies virus ,Outbreak ,04 agricultural and veterinary sciences ,General Medicine ,medicine.disease ,Phylogeography ,030104 developmental biology ,Geography ,Research Article - Abstract
The emerging disease of rabies was confirmed in Taiwan ferret badgers (FBs) and reported to the World Organization for Animal Health (OIE) on July 17, 2013. The spread of wildlife rabies can be related to neighborhood countries in Asia. The phylogenetic analysis was conducted by maximum likelihood (ML) methods and the Bayesian coalescent approach based on the glycoprotein (G) and nucleoprotein (N) genes. The phylogeographic and spatial temporal dynamics of viral transmission were determined by using SPREAD, QGIS. Therefore, the origin and the change with time of the viruses can be identified. Results showed the rabies virus of FB strains in Taiwan is a unique clade among other strains in Asia. According to the phylogeographic coalescent tree, three major genotypes of the FB rabies virus have circulated in three different geographical areas in Taiwan. Two genotypes have distributed into central and southern Taiwan between two ecological river barriers. The third genotype has been limited in southeastern Taiwan by the natural mountain barrier. The diversity of FB rabies viruses indicates that the biological profile of FBs could vary in different geographical areas in Taiwan. An enhanced surveillance system needs to be established near the currently identified natural barriers for early warnings of the rabies virus outbreak in Taiwan.
- Published
- 2017
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