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( Sung Gyu Yun ),( Na Na Kim ),( Hyun Suk Shin ),( Young Jae Choi ),( Ji Yong Choi ),( Jin Ah Song ),( Cheol Young Choi ) 한국수산과학회(구 한국수산학회) 2015 Fisheries and Aquatic Sciences Vol.18 No.2
We investigated the differences in the expression of the neurohormones kisspeptin (Kiss) and gonadotropin-inhibitory hormone (GnIH) and cytochrome P450 aromatase (P450arom), gonadotropin hormones (GTHs), and sex steroids in the goldfish Carassius auratus exposed to light-emitting diodes (LEDs). The expression levels of Kiss1, Kiss2, G-protein-coupled receptor 54 (GPR54), GTHs, GnIH, and P450arom were compared between the control (white light) and LED-treated goldfish. Furthermore, we measured the plasma levels of follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The levels of Kiss1 mRNA and protein; Kiss2, GPR54, and GTHα protein; GTH mRNA; and plasma FSH and LH in the hypothalamus and cultured hypothalamus cells were significantly higher in the green and purple LED treatment groups than in the other groups. These results suggested that red LEDs inhibit the sex maturation hormones, Kiss, GPR54, GTHs, and P450arom, and that GnIH plays a role in the negative regulation of reproductive function in goldfish.
Ji Yeon Chun,Byeongsoo Kim,Jung Gyu Lee,Hyung Yong Cho,Sang Gi Min,Mi Jung Choi 한국축산식품학회 2014 한국축산식품학회지 Vol.34 No.4
This study investigated the effects of γ-aminobutylic acid (GABA) on the quality and sensorial properties of both the GABA/NaCl complex and model meat products. GABA/NaCl complex was prepared by spray-drying, and the surface dimensions, morphology, rheology, and saltiness were characterized. For model meat products, pork patties were prepared by replacing NaCl with GABA. For characteristics of the complex, increasing GABA concentration increased the surface dimensions of the complex. However, GABA did not affect the rheological properties of solutions containing the complex. The addition of 2% GABA exhibited significantly higher saltiness than the control (no GABA treatment). In the case of pork patties, sensory testing indicated that the addition of GABA decreased the saltiness intensity. Both the intensity of juiciness and tenderness of patties containing GABA also scored lower than the control, based on the NaCl reduction. These results were consistent with the quality characteristics (cooking loss and texture profile analysis). Nevertheless, overall acceptability of the pork patties showed that up to 1.5%, patties containing GABA did not significantly differ from the control. Consequently, the results indicated that GABA has a potential application in meat products, but also manifested a deterioration of quality by the NaCl reduction, which warrants further exploration.
( Sang-deok Ji ),( Jong-gon Son ),( Seong-wan Kim ),( Nam-suk Kim ),( Kee-young Kim ),( Hae-yong Kweon ),( Gyu-byeong Seong ),( Young-ho Koh ) 한국잠사학회 2017 International Journal of Industrial Entomology Vol.34 No.2
Cooked mature silkworms have received increasing attention as a new source of income for sericultural farms. Quality improvement of these worms as the end-product requires prevention of the following: inclusion of unfertilized silkworm eggs, mixing with impurities, producing undercooked or overcooked mature larvae, and mixing spewed silk substance. Preventing unfertilized eggs and impurities and reducing undercooked or overcooked mature larvae can be achieved by sericultural farms. However, the prevention of spewed silk substance requires the development of new techniques. This study developed new techniques for optimum cold storage temperature, soaking, and hydro-thermal treatment to minimize the spewing of mature larvae prior to steaming: when larvae mature after 7 days on the 5<sup>th</sup> instar, they should be soaked in water at room temperature of 25℃ immediately upon collection and stored at 8℃ for less than 3 days. They should be soaked in boiling water for approximately 10 s immediately before steaming to kill the larvae and cooked with steam. This method allows for the production of high-quality mature larvae without spewed silk substance. These new techniques will considerably improve the production of well-cooked quality mature larvae by minimizing silk substance spewed out from the larvae.
Ji Soo Lee,Jong Man Kim,Seunghwan Lee,Jin-Yong Choi,Wontae Cho,Gyu-Seoung Choi,Jae Berm Park,Choon Hyuck David Kwon,Sung Joo Kim,Jae-Won Joh 한국간담췌외과학회 2015 한국간담췌외과학회지 Vol.19 No.4
Backgrounds/Aims: Hepatocellular carcinoma (HCC) is uncommon in young adults and the prognosis of these patients is still unclear. In this retrospective study, we compared the clinicopathological characteristics and outcomes of young patients with HCC with those of older patients with HCC. Methods: We retrospectively reviewed the clinicopathological characteristics of a total of 1,124 patients with HCC who underwent hepatectomy at our institution between 2006 and 2010. Patients ≤40 years of age at the time of HCC diagnosis were classified in the younger group. Results: One hundred and three patients (9.2%) were classified in the younger group. whereas, 1021 patients were classified in the older group. The incidences of hepatitis B virus infection, alpha-fetoprotein (AFP) levels, and indocyanine green retention test were all higher in younger patients than in older patients (p<0.05). Disease-free survival and overall survival were longer in older patients than in younger patients, without statistical significance. In younger patients, increased levels of protein induced by vitamin K antagonist-II (PIVKA-II) and alkaline phosphatase, portal vein tumor thrombosis, and intrahepatic metastasis were all predisposing factors for tumor recurrence after hepatectomy. Conclusions: Although the AFP levels were higher in younger patients with HCC than in older patients with HCC, disease-free survival and overall survival after liver resection were not significantly different between the two groups.
Case Report : Leflunomide-induced Toxic Epidermal Necrolysis in a Patient with Rheumatoid Arthritis
( Ji Hye Je ),( Hyun Jung Lee ),( Young Ju Na ),( Ji Hye Seo ),( Young Ho Seo ),( Jae Hoon Kim ),( Sung Jae Choi ),( Young Ho Lee ),( Jong Dae Ji ),( Gwan Gyu Song ) 대한류마티스학회 2014 대한류마티스학회지 Vol.21 No.6
Leflunomide was licensed for the treatment of rheumatoid arthritis in 1998 and has been available in Korea since 2003. Allergic cutaneous reactions (rash, purpura) are common (<10%) side effects of leflunomide, but severe cases such as Stevens-Johnson syndrome (SJS) or toxic epidermal necrolysis (TEN) are rarely reported. There has not been a report of SJS or TEN induced by leflunomide in Korea. Here we report a case of leflunomide-induced TEN in a patient with rheumatoid arthritis. Leflunomide was discontinued, and the TEN was treated with methylprednisolone, cholestyramine and immunoglobulin. The skin lesion eventually resolved over four weeks with residual post-inflammatory hyperpigmentation.
Ji, Myoung-Jin,Kim, Jong-Gyu,Shin, Ueon-Sang Korean Chemical Society 2012 Bulletin of the Korean Chemical Society Vol.33 No.8
A new fluorescent system (acridine/RTIL hybrid gel) confined in the 3D micro-structure of a poly(lactic acid) membrane were prepared from 1-butyl-3-methylimidazolium-based ionic liquids ([bmim]X (X = $SbF_6$, $NTf_2$, Cl); RTILs), poly(lactic acid) (PLA), and acridine via the sol-gel route. SEM images showed that, in the presence of [bmim]$SbF_6$ and [bmim]$NTf_2$, 3D-ly paticulated structures were created inside the PLA membranes and acridine/RTIL hybrid gels were confined in gabs of particulates. However, the use of [bmim]Cl induced the formation of a 3D-ly porous structure containing the hybrid gel of acridine/[bmimCl in the micropores. The three fluorescent systems exhibited different fluorescence behaviors (fluorescence maximum and intensity) depending on the C2-H acidity scale of the RTILs (or their anion type). Acridine gels hybridized with [bmim]$SbF_6$ and [bmim]$NTf_2$ showed blue fluorescence with relative high intensity, whereas the hybrid gel with [bmim]Cl exhibited almost no fluorescence under dry conditions. However, the acridine/[bmim]Cl hybrid system in the micro-porous PLA membrane started to emit fluorescent light under humid conditions and showed a possible response, indicating that it could be applied as a humidity sensor.