• Title/Summary/Keyword: Challenge Test

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Effects of Dietary Wood Vinegar Supplementation on Growth and Immune Responses of Juvenile Olive Flounder, Paralichthys olivaceus (치어기 넙치 사료내 목초액 첨가에 따른 성장 및 면역반응에 미치는 효과)

  • Lee, Seung-Hyung;Park, Gun-Jun;C. Bai, Sung-Chul
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.41 no.4
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    • pp.248-252
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    • 2008
  • A 6-week feeding trial was conducted to investigate effects of dietary supplementation with wood vinegar (WV) as a feed additive for juvenile olive flounder, Paralichthys olivaceus. Eight experimental diets supplemented with 0(control), 0.01, 0.025, 0.05, 0.1, 0.25, 0.5 and 2.0% WV/kg diet($WV_0,\;WV_{0.01},\;WV_{0.025},\;WV_{0.05},\;WV_{0.1},\;WV_{0.25},\;WV_{0.5},\;and\;WV_{2.0}$, respectively) were prepared by mixing with basal diet. After the 6-week feeding trial, fish fed the $WV_{0.1}$ diet had significantly higher weight gain, feed efficiency, and specific growth rate than those of fish fed the other diets(P<0.05). No mortality was observed in the treatment groups fed the experimental diets for 6 weeks. The liver antioxidant activity of fish fed the $WV_{0.01},\;WV_{0.025},\;and\;WV_{0.05}$ diets was significantly higher than that of fish fed the other diets. The lysozyme activity of fish fed the $WV_{0.25}$ diet was significantly higher than that of fish fed the other diets. Fish fed diets supplemented with WV had significantly lower cumulative mortality than that of fish fed the control diet throughout the challenge test, and fish fed the $WV_{0.05}\;and\;WV_{0.1}$ diets had the highest resistance to disease caused by Edwardsiella tarda at day 7 of the challenge test. Therefore, feeding 0.05-0.1% WV/kg diet improves the growth and immune responses of juvenile olive flounder, Paralichthys olivaceus.

The Relationship between Hardiness.Self Efficacy and Compliance in Coronary Artery Disease Patients (관상동맥질환자의 강인성, 자기효능과 건강행위 이행과의 관계)

  • Kim, Sook-Young
    • Journal of East-West Nursing Research
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    • v.3 no.1
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    • pp.83-95
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    • 1998
  • The purpose of this study was to investigate the relationship between hardiness-self efficacy and compliance in coronary artery disease patients. The subjects for the study were 106 patients who admitted to S medical center or visited to outpatient clinic. The instruments used for this study included a questionnaire of general characteristics, compliance, health related hardiness and self efficacy. The data were analyzed by using mean, t -test, ANOVA, Scheffe test, Pearson correlation. The results of this study were as follows: 1. The average score for compliance was 70.75, for the hardiness was 87.35, for the self efficacy was 59.04. 2. The relationship between the variables of compliance and hardiness self efficacy was significant. Compliance was significantly related to hardiness(r=.47, p<.01), suggesting that the person with high hardiness got higher compliance scores. The three dimensions of health related hardiness were control, commitment, challenge. Control(r=.513, p<.01), commitment(r=.258, p<.05), challenge(r=.419, p<.01), were significantly related to compliance. A slight but significant correlation was also found between compliance and self efficacy(r=.21, p<.05). 3. In the relationship between general characteristics variables and compliance there were significant differences in marital status(t =3.43, p<.01), duration of illness(F=4.98, p<.01), hospitalized experience(t=2.04, p<.05), educational experience(t=2.66, p<.01). From the above results, it can be concluded that ; Hardiness and self efficacy were found as important factors of the compliance in coronary artery disease patients. These results suggest that nursing intervention to increase the level of hardiness and self efficacy should be developed.

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Fusion Peptide Improves Stability and Bioactivity of Single Chain Antibody against Rabies Virus

  • Xi, Hualong;Zhang, Kaixin;Yin, Yanchun;Gu, Tiejun;Sun, Qing;Shi, Linqing;Zhang, Renxia;Jiang, Chunlai;Kong, Wei;Wu, Yongge
    • Journal of Microbiology and Biotechnology
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    • v.27 no.4
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    • pp.718-724
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    • 2017
  • The combination of rabies immunoglobulin (RIG) with a vaccine is currently effective against rabies infections, but improvements are needed. Genetic engineering antibody technology is an attractive approach for developing novel antibodies to replace RIG. In our previous study, a single-chain variable fragment, scFv57R, against rabies virus glycoprotein was constructed. However, its inherent weak stability and short half-life compared with the parent RIG may limit its diagnostic and therapeutic application. Therefore, an acidic tail of synuclein (ATS) derived from the C-terminal acidic tail of human alpha-synuclein protein was fused to the C-terminus of scFv57R in order to help it resist adverse stress and improve the stability and half-life. The tail showed no apparent effect on the preparation procedure and affinity of the protein, nor did it change the neutralizing potency in vitro. In the ELISA test of molecular stability, the ATS fusion form of the protein, scFv57R-ATS, showed an increase in thermal stability and longer half-life in serum than scFv57R. The protection against fatal rabies virus challenge improved after fusing the tail to the scFv, which may be attributed to the improved stability. Thus, the ATS fusion approach presented here is easily implemented and can be used as a new strategy to improve the stability and half-life of engineered antibody proteins for practical applications.

Effects of Different Dietary Vitamin E Levels on Growth Performance, Non-specific Immune Responses, and Disease Resistance against Vibrio anguillarum in Parrot Fish (Oplegnathus fasciatus)

  • Galaz, German Bueno;Kim, Sung-Sam;Lee, Kyeong-Jun
    • Asian-Australasian Journal of Animal Sciences
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    • v.23 no.7
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    • pp.916-923
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    • 2010
  • We report nutritional physiology and non-specific immune responses of vitamin E in parrot fish for the first time. This study aimed to investigate the essentiality and requirements in diets based on growth performances, non-specific immune responses and a challenge test against Vibrio angullarum. Six casein-gelatin based semi-purified diets were formulated to contain six graded levels of DL-${\alpha}$-tocopheryl acetate (${\alpha}$-TA) at 0, 25, 50, 75, 100 and 500 mg/kg diet (designated as E0, E25, E50, E75, E100 and E500, respectively) and fed to triplicate groups of juvenile parrot fish for 12 weeks. The analyzed dietary concentrations of vitamin E were 0, 38, 53, 87, 119 and 538 mg/kg diet for E0, E25, E50, E75, E100 and E500, respectively. At the end of the feeding trial, growth performance and feed utilization of fish fed the E25 were significantly higher compared to that of fish fed the other diets. Liver ${\alpha}$-tocopherol concentration was significantly increased with an increase in dietary ${\alpha}$-TA in a dose dependent manner. No apparent clinical signs of vitamin E deficiency and mortality were observed in fish fed the basal diet for 12 weeks. Among the immune responses assayed, phagocytic (NBT assay) and myeloperoxidase activities were significantly increased with increment of dietary ${\alpha}$-TA levels. During the challenge test with V. anguillarum, E75, E100, and E500 diets resulted in higher survivals than E0, E25 and E50 diets. The findings of this study suggest that parrot fish require exogenous vitamin E and the optimum dietary level could be approximately 38 mg ${\alpha}$-TA/kg diet for normal growth and physiology. Dietary ${\alpha}$-TA concentration over 500 mg/kg could be required to enhance the nonspecific immune responses and improve the resistance of juvenile parrot fish against V. anguillarum.

Effects of Dietary Supplementation with Bacillus sp. on Growth Performance, Feed Utilization, Innate Immunity and Disease Resistance against Streptococcus iniae in Olive Flounder Paralichthys olivaceus (사료 내 Bacillus 균주의 첨가가 넙치(Paralichthys olivaceus) 치어의 성장, 사료효율, 선천성면역 및 연쇄구균 질병저항성에 미치는 영향)

  • Cha, Ji-Hoon;Yang, Si-Yong;Woo, Seo-Hyung;Song, Jin-Woo;Oh, Dae-Han;Lee, Kyeong-Jun
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.45 no.1
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    • pp.35-42
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    • 2012
  • We investigated the effect of dietary supplementation with probiotics on growth performance, feed utilization, innate immunity and disease resistance against Streptococcus iniae in juvenile olive flounder Paralichthys olivaceus. Four experimental diets were made by supplementation with three Bacillus sp. probiotics (B. subtilis, B. pumilus and B. licheniformis) into a basal diet (control) at 0.5% each. Three-hundred fish (average BW, 20 g) were randomly distributed (25 per tank) into twelve 150 L capacity polyvinyl circular tanks with three replicates per dietary treatment. Triplicate groups of fish were fed the experimental diets to apparent satiation (twice per day, 09:00 and 17:00 h) for nine weeks. After the feeding trial, a challenge test was directly conducted against S. iniae. The results indicated that dietary supplementation with the probiotic, Bacillus sp, seemed to improve growth performance of olive flounder. Hematological parameters and innate immunity as determined by nitroblue tetrazolium, myeloperoxidase or superoxide dismutase activities were not significantly affected by the probiotic supplementation. The result from the challenge test suggested that dietary supplementation with probiotics Bacillus sp. can improve the disease resistance of olive flounder against S. iniae.

Effects of Dietary Inclusion of Various Additives on Growth Performance and Immune Responses in Juvenile Olive Flounder(Paralichthys olivaceus) (사료내 다양한 첨가제가 넙치 (Paralichthys olivaceus) 치어의 성장 및 비특이적 면역반응에 미치는 영향)

  • Kim, Kang-Woong;Kim, Kyoung-Duck;Lee, Bong-Joo;Lee, Jin-Hyeok;Bai, Sungchul C.;Choi, Youn-Hee;Han, Hyon-Sob
    • Journal of Fisheries and Marine Sciences Education
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    • v.25 no.6
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    • pp.1285-1293
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    • 2013
  • This study was conducted to investigate the effects of dietary inclusion of various additives Solid sulfur, fucoidan, and glucan on growth performance and immune responses in Juvenile olive flounder paralichthys olivaceus. Six experimental diets supplemented with : no additives (CON); 0.5 and 1.0% solid sulfur (S); 0.2 and 0.4% fucoidan (F); 0.1% glucan (G) of these additives diet on a dry-matter basis. Fish averaging $8.2{\pm}0.17g$ were fed one of six experimental diets in triplicate groups for 6 weeks. By the end of the feeding trial, weight gain, feed efficiency, specific growth rate, protein efficiency ratio, hepatosomatic index and condition factor of fish fed diet CON were significantly lower then those of fish fed the all additives diets (P < 0.05). In challenge test, fish were infected by intraperitonel injection of 0.1 ml bacterial suspension with Edwardsiella tarda per fish after the feeding trial. As a result fish fed All additive diet showed a lower cumulative mortality then did fish fed CON diet throughout the challenge test. In conclusion, these results indicated that solid sulfur, fucoidan and glucan enhanced the growth, feed efficiency and non-specific immune activity of juvenile flounder and protect the fish against microbial infections.

A Case of Smoking Induced Acute Eosinophilic Pneumonia (흡연에 의한 급성 호산구성 폐렴 1예)

  • Jo, Hyun Chul;Lee, Young Joo;Park, Myung Jae;Kang, Hong Mo;You, Jee Hong
    • Tuberculosis and Respiratory Diseases
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    • v.58 no.5
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    • pp.515-520
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    • 2005
  • Acute eosinophilic pneumonia (AEP) has been described as an idiopathic febrile illness with a duration of less than seven days with severe hypoxemia, pulmonary infiltrates, and no history of asthma. It has been reported that AEP is associated with smoking. Although the pathogenesis of smoking induced AEP is being actively studied, there is no direct histological evidence that smoking actually induces AEP. Recently, we encountered a case of AEP that may have been caused by smoking. We performed a cigarette smoking challenge test to verify that smoking was indeed the cause of AEP in this patient. Smoking induced an increase the proportion of eosinophils in the bronchoalveolar lavage fluid without any respiratory symptoms or abnormal radiological findings. This result suggests that smoking was the cause of AEP in this patient.

Skin Sensitization Study of Bee Venom (Apis mellifera L.) in Guinea Pigs

  • Han, Sang-Mi;Lee, Gwang-Gill;Park, Kyun-Kyu
    • Toxicological Research
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    • v.28 no.1
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    • pp.1-4
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    • 2012
  • Bee venom (Apis mellifera L., BV) has been used as a cosmetic ingredient for antiaging, anti-inflammatory and antibacterial functions. The aim of this study was to access the skin sensitization of BV, a Buehler test was conducted fifty healthy male Hartley guinea pigs with three groups; Group G1 (BV-sensitization group, 20 animals), group G2 (the positive control-sensitization group, 20 animals), and group G3 (the ethyl alcohol-sensitization group, 10 animals). The exposure on the left flank for induction was repeated three times at intervals of one week. Two weeks after the last induction, the challenge was performed on the right flank. No treatment-related clinical signs or body weight changes were observed during the study period. The average skin reaction evaluated by erythema and edema on the challenge sites and sensitization rate in the BV-sensitization group at 30 hours were 0.0 and 0%, respectively, which are substantially low compared with in positive control group (average skin reaction: 0.55, sensitization rate: 40%) and identical with in vehicle control group, representing a weak sensitizing potential. The average skin reaction and sensitization rate observed at 54 hours were 0.0 and 0% in the BV-sensitization group, respectively, and 0.25 and 20% in the positive control group, respectively. It was concluded that BV classified to Grade I, induced no sensitization when tested in guinea pigs and may provide a developmental basis for a cosmetic ingredient or external application for topical uses.

A Case of Acquired Myasthenia Gravis in German Shepherd Dog (개에서 발생한 후천성 중증근육무력증 일례)

  • Lee Sang-Gwan;Hoh Woo-Pil;Kim Youn-Ju;Kim Tae-Wan;Yoo Jong-Hyun;Eom Ki-Dong;Oh Tae-Ho;Lee Keun-Woo
    • Journal of Veterinary Clinics
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    • v.22 no.4
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    • pp.392-395
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    • 2005
  • A three-year old intact female German shepherd dog weighing 32kg was presented with the history of regurgitation and vomiting. Physical examination revealed a thin body condition, hoarse voice, hypersalivation, and pelvic limb weakness. In radiograph, meagaesophagus was identified. The neostigmine challenge test was positive. The titer of acetylcholine receptor (AChR) antibody was 1.58 nmol/L (reference range, <0.6nmol). Therefore, the dog was diagnosed to be suffering with chronic generalized form of acquired myasthenia gravis and followed by treatment with pyridostigmine bromide, 1mg/kg, q12 hrs. Treatment improved the pelvic limb weakness, however intermittent regurgitation and vomiting persisted. This resulted in aspiration pneumonia f3r which antibiotics were administered However, the dog was euthanized due to poor management and owner's request.

The Influence of Job Characteristics and Job Stress on Children's Hospital Nurses' Turnover Intention (직무특성과 직무스트레스가 아동병원 간호사의 이직의도에 미치는 영향)

  • Kim, Se-Young;Back, Seong-Hee
    • The Journal of the Korea Contents Association
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    • v.16 no.4
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    • pp.100-113
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    • 2016
  • Purpose: This study was performed to investigate the influence of children's hospital nurses' job characteristics and job stress on turnover intention. Method: The subjects were 148 nurses who have been working in 6 children's hospitals located in G city. Measurement tools used for this study included job characteristics were created by Lee, and modified by Hong, and job stress tool developed Kim & Ku and modified by Choi. And the tools used for assessing turnover intention were created by Mobley and Becker and modified by Kim. The collected data was analyzed using descriptive statistics, the independent t-test, one-way ANOVA, Pearson' Correlation and regression on SPSS 21.0 program. Result: Job challenge and job fitness among the sub-areas of job characteristics, job stress and salary were identified as factors influencing turnover intention. These factors explained 36.5% of variance of turnover intention. Conclusion: In conclusion, this results can be used to help the children's hospitals creates an environment where nurses can enhance Job challenge and job fitness also, reduce job stress which lead to turnover rate and turnover intention.