• Title/Summary/Keyword: Disease research

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Current Status and Future Prospects of White Root Rot Management in Pear Orchards: A Review

  • Sawant, Shailesh S.;Choi, Eu Ddeum;Song, Janghoon;Seo, Ho-Jin
    • Research in Plant Disease
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    • v.27 no.3
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    • pp.91-98
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    • 2021
  • The current social demand for organic, sustainable, and eco-friendly approaches for farming, while ensuring the health and productivity of crops is increasing rapidly. Biocontrol agents are applied to crops to ensure biological control of plant pathogens. Research on the biological control of white root rot disease caused by a soil-borne pathogen, Rosellinia necatrix, is limited in pears compared to that in apple and avocado. This pathogenic fungus has an extensive host range, and symptoms of this disease include rotting of roots, yellowing and falling of leaves, wilting, and finally tree death. The severity of the disease caused by R. necatrix, makes it the most harmful fungal pathogen infecting the economical fruit tree species, such as pears, and is one of the main limiting factors in pear farming, with devastating effects on plant health and yield. In addition to agronomic and cultural practices, growers use chemical treatments to control the disease. However, rising public concern about environmental pollution and harmful effects of chemicals in humans and animals has facilitated the search for novel and environmentally friendly disease control methods. This review will briefly summarize the current status of biocontrol agents, ecofriendly methods, and possible approaches to control disease in pear orchards.

Toxoplasmic meningoencephalitis in a stray cat in Korea

  • Kim, Ha-Young;Bae, You-Chan;Woo, Gye-Hyeong;Byun, Jae-Won;Jung, Byeong-Yeal;Park, Jung-Won;Chae, Hee-Sun;Choi, Jae-Yong;Nakayama, Hiroyuki;Hwang, Eui Kyung;Joo, Yi-Seok;Lee, O-Soo
    • Korean Journal of Veterinary Research
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    • v.49 no.4
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    • pp.291-295
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    • 2009
  • A dead stray cat was necropsied for zoonotic feline disease monitoring. Grossly, there were no specific lesions. Major microscopic lesions included lymphocytic meningoencephalitis, malacia, and tissue cysts in the cerebral and cerebellar cortex. The size and shape of tissue cysts were identical to those of Apicomplexa including Toxoplasma (T.) gondii. Bradyzoites in the tissue cyst were strongly positive for T. gondii by immunohistochemistry. Electron microscopy revealed that bradyzoites within the tissue cyst were similar to the morphological features of T. gondii. Fresh tissue samples were examined by a polymerase chain reaction assay and resulted in a specific band of T. gondii only in the brain. Based on the results, this case was diagnosed as toxoplasmosis. This is the first case of toxoplasmic meningoencephalitis in a cat in Korea.

Association between the severity of hypodontia and the characteristics of craniofacial morphology in a Chinese population: A cross-sectional study

  • Xin Xiong;Jiaqi Liu;Yange Wu;Chengxinyue Ye;Qinlanhui Zhang;Yufan Zhu;Wenke Yang;Jun Wang
    • The korean journal of orthodontics
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    • v.53 no.3
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    • pp.150-162
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    • 2023
  • Objective: To investigate craniofacial differences in individuals with hypodontia and explore the relationship between craniofacial features and the number of congenitally missing teeth. Methods: A cross-sectional study was conducted among 261 Chinese patients (males, 124; females, 137; age, 7-24 years), divided into four groups (without hypodontia: no teeth missing, mild: one or two missing teeth, moderate: three to five missing teeth, severe: six or more missing teeth) according to the number of congenitally missing teeth. Differences in cephalometric measurements among the groups were analyzed. Further, multivariate linear regression and smooth curve fitting were performed to evaluate the relationship between the number of congenitally missing teeth and the cephalometric measurements. Results: In patients with hypodontia, SNA, NA-AP, FH-NA, ANB, Wits, ANS-Me/N-Me, GoGn-SN, UL-EP, and LL-EP significantly decreased, while Pog-NB, AB-NP, N-ANS, and S-Go/N-Me significantly increased. In multivariate linear regression analysis, SNB, Pog-NB, and S-Go/N-Me were positively related to the number of congenitally missing teeth. In contrast, NA-AP, FH-NA, ANB, Wits, N-Me, ANS-Me, ANS-Me/N-Me, GoGn-SN, SGn-FH (Y-axis), UL-EP, and LL-EP were negatively related, with absolute values of regression coefficients ranging from 0.147 to 0.357. Further, NA-AP, Pog-NB, S-Go/N-Me, and GoGn-SN showed the same tendency in both sexes, whereas UL-EP and LL-EP were different. Conclusions: Compared with controls, patients with hypodontia tend toward a Class III skeletal relationship, reduced lower anterior face height, flatter mandibular plane, and more retrusive lips. The number of congenitally missing teeth had a greater effect on certain characteristics of craniofacial morphology in males than in females.

Weighting of Stroke Pattern Identification Using an AHP (AHP 기법을 이용한 중풍 변증지표의 가중치 설정)

  • Kang, Byoung-Kab;Kim, So-Yeon;Lee, Jung-Sup;Kim, No-Soo;Ko, Mi-Mi;Kwon, Se-Hyug;Bang, Ok-Sun
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.25 no.1
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    • pp.149-153
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    • 2011
  • In this study, we structuralized the diagnostic indices used for pattern identification (PI) of stroke, and suggested an AHP method to obtain the weights of PI indices. AHP of the subjects under consistency ratio 0.1 showed that the critical indices for stroke PI consists of 9 for Qi-deficiency, 13 for Phlegm/dampness, 7 for blood stagnation, 12 for Yin-deficiency and 16 for Fire/heat. Furthermore, AHP analysis rendered the weights of indices of each PI that will be useful for oriental medical experts to perform objective PI.

Heatstroke occurred in an American Pit Bull Terrier in Korea (국내 아메리칸 핏불테리어에서 발생한 열사병 증례 보고)

  • Lee, Seunghee;Jung, Ji-Youl;Jeong, Jae-Hoon;Lee, Hyunkyoung;Park, Jung-Won;Lee, Kyoung-Ki;Kim, Jong-Hwan;So, ByungJae;Yoon, Soon-Seek
    • Korean Journal of Veterinary Service
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    • v.41 no.3
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    • pp.211-216
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    • 2018
  • Heat stroke in a dog is a life-threatening syndrome characterized by a high body temperature over $41^{\circ}C$, by the central nervous system dysfunction, and by multiple organ dysfunction. A 11-month-old male American Pit Bull Terrier was presented to clarify the cause of death to diagnostic laboratory. This dog showed clinical signs such as high body temperature ($42^{\circ}C$), severe tachypnea, hematochezia, epistaxis and hemoptysis after transportation at hot summer time. At necropsy, there were hemorrhages in skin, serosa of stomach and small intestine, and also dark red fluid in lumen of intestine. Histopathologic examination revealed extensive hemorrhages in stomach, muscle, skin, and tongue. In microbiology, pathologic bacteria such as Pasteurella, Boedetella, Salmonella, Clostridium, and circulating virus in Korea such as CDV, CIV, CAV, CHV, CCV, CPIV were negative except CPV. There were many gross and microscopic lesions suggesting hest stroke while pathologic agents and related lesions were not detected. Therefore we diagnosed this case as heatstroke.

KSP inhibitor SB743921 induces death of multiple myeloma cells via inhibition of the NF-κB signaling pathway

  • Song, In-Sung;Jeong, Yu Jeong;Nyamaa, Bayalagmaa;Jeong, Seung Hun;Kim, Hyoung Kyu;Kim, Nari;Ko, Kyung Soo;Rhee, Byoung Doo;Han, Jin
    • BMB Reports
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    • v.48 no.10
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    • pp.571-576
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    • 2015
  • SB743921 is a potent inhibitor of the spindle protein kinesin and is being investigated in ongoing clinical trials for the treatment of myeloma. However, little is known about the molecular events underlying the induction of cell death in multiple myeloma (MM) by SB743921, alone or in combination treatment. Here, we report that SB743921 induces mitochondria-mediated cell death via inhibition of the $NF-{\kappa}B$ signaling pathway, but does not cause cell cycle arrest in KMS20 MM cells. SB743921-mediated inhibition of the $NF-{\kappa}B$ pathway results in reduced expression of SOD2 and Mcl-1, leading to mitochondrial dysfunction. We also found that combination treatment with SB743921 and bortezomib induces death in bortezomib-resistant KMS20 cells. Altogether, these data suggest that treatment with SB743921 alone or in combination with bortezomib offers excellent translational potential and promises to be a novel MM therapy.

Molecular and serological surveillance of equine piroplasmosis in the Republic of Korea between 2016 and 2017

  • Seo, Hyun-Ji;Kim, Keun-Ho;Lee, Sang Kyu;Min, Subin;Lim, Ji-Yeon;Yang, Sun-Joo;Yoo, Mi-Sun;Jung, Sukchan;Yoon, Soon-Seek;Cho, Yun Sang
    • Korean Journal of Veterinary Research
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    • v.61 no.1
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    • pp.4.1-4.6
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    • 2021
  • Equine piroplasmosis (EP) is caused by Babesia caballi and Theileria equi infection. We investigated antigen and antibody of EP in horses in the Republic of Korea during 2016-2017. Antigen and antibody of T. equi was detected 0.06% (1/1,650). Phylogenetic analysis of 18S rRNA revealed that the T. equi was highly homologous with the strains from China, Mongolia, and Spain. Two Theileria spp. were also detected and highly homologous with T. buffeli, T. luwenshuni, and T. orientalis.

Synthesis of Lysophosphatidylcholine Analogues Using D-Mannitol as a Chiral Template and Their Biological Activity for Sepsis

  • Heo, Hye Jin;Jung, Jun-Sub;Lee, Jung Ho;Han, Su Young;Bang, Hyun Bae;Song, Dong-Keun;Jun, Jong-Gab
    • Bulletin of the Korean Chemical Society
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    • v.27 no.8
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    • pp.1149-1153
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    • 2006
  • LPC analogues including natural and unnatural LPC, 3-L-2-PC, acetylated LPC and ethylene glycol derivative are prepared from D-mannitol using in convenient procedures by only changing the synthetic sequences, and their protective activities against cecal ligation and puncture (CLP)-induced severe sepsis are compared. The chirality at C2 position in LPC is found to be required as (S)-configuration for sepsis inhibition, comparing from the protection activity between LPC 6 and unnatural LPC 8. The hydroxyl functionality is also very important and required at C2 or C3 position as shown in the protection activities of ethylene glycol analogue 11 and 3-L-2-PC 9.

Ziziphus jujuba mill. Extract Promotes Myogenic Differentiation of C2C12 Skeletal Muscle Cells

  • Gyeong Do Park;So Young Eun;Yoon-Hee Cheon;Chong Hyuk Chung;Chang Hoon Lee;Myeung Su Lee;Ju-Young Kim
    • Biomedical Science Letters
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    • v.29 no.1
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    • pp.26-33
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    • 2023
  • Ziziphus jujuba Mill. (ZJM), a traditional folk medicine and functional food in South Korea and China, has been reported to having pharmacological activities against anti-cancer, anti-oxidative, and anti-obesity. However, the effect of ZJM related to myoblast differentiation has not been known. In this study, we investigated the effects and mechanism of ZJM on myogenic differentiation of C2C12 cells. ZJM promotes myogenic differentiation and elevates the formation of multinucleated myotube compared to the control group. ZJM significantly increased the mRNA and protein expression of MyHC1, myogenin and MyoD in dose- and time-dependent manner. Interestingly, ZJM significantly inhibited the mRNA and protein expression of protein degradation markers, atrogin-1 and MuRF-1, in dose- and time-dependent manner. Taken together, our data suggest that ZJM is a potential functional candidate for muscle growth and strength by promoting myogenic differentiation.