For determining the relative genetic effects of Duroc (D) and Taoyuan (T) breeds on the economic traits of their hybrids, 72 litters of pigs, from four mating types, namely TT (T♂$\times$T♀), DD (D♂$\times$D♀) and D-T hybrids (TD, T♂$\times$D♀ and DT, D♂$\times$T♀) were used in this study. The various crossbreeding parameters were estimated by comparisons among mating types using linear contrasts of least-square analysis. The results of reproductive traits analysis showed that T breed had contributed superior genetic effects on the total number of piglets at birth (TBN) (p<0.10) and number of live piglets at 21 days (LP21) (p<0.05) to the D-T hybrids. Estimates of maternal genetic effects showed that the T females were superior in TBN (p<0.05), but inferior in average birth weight (ABW) and average litter birth weight (LBW) (p<0.01) to the D females. Direct heterosis effects were significant for LBW, LP21 and LWT21 (p<0.01). Least-squares analysis of other economic traits showed that T breed had relative negative effects on all growth traits, withers height (WH), body type index (BTI), average backfat thickness (ABF), carcass length (LENG), loin eye area (longissimus) (LEARA), and lean percentage (LEAN) of D-T hybrids (p<0.05). Estimates of direct genetic effects showed that the D breed was superior to the T breed in all growth and carcass traits except the average backfat (BF). Estimates of maternal genetic effects showed that average body weight at 180 days (WT180) of progenies from T sows were lighter than from D sows. Progenies from D females had larger and leaner carcass than those from T females. Direct heterosis effects were significant for average daily weight gains from 150 to 180 days ($ADG_{150-180}$) (p<0.05) and for average body weights at 150 (WT150), and 180 days (WT180), average daily weight gains from birth to 150 and 180 days ($ADG_{150}$ and $ADG_{180}$, respectively), WH, body length (BL), ABF, BTI, and LENG (p<0.01). The results showed that D-T hybrids tended to have superior TBN and LP21 than D breed, and to be superior in all growth and most conformation and carcass traits to the T breed.
Background : It is well known that non-rapid eye movement(NREM) sleep activates the occurrence of interictal epileptiform discharges(IED) in many epileptic syndromes. We performed this study to assess the effect of NREM sleep on IED in epileptic patients with organic brain lesions. Materials and Methods : We analyzed awake and sleep electroencephalopathy(EEG) recorded simultaneously after partial sleep deprivation in 50 patients. We calculated the awake and sleep spike index (ASI and SSI, spikes/epoch), and the percentage increase of ASI and SSI during sleep. Results : In the 50 patients, the IEDs were recorded exclusively during the awake state in 1 (2%) patient, and during the sleep state in 13(26%) patients. The SSI was higher in 44 (88%) patients, and the ASI was higher in 5 (10%) patients. The mean ASI and the SSI in patients with organic brain lesions were $0.058{\pm}0.121$ and $0.148{\pm}0.187$, and it was $0.081{\pm}0.150$ and $0.174{\pm}0.226$ in patients without organic brain lesions. There were significant increases in the spike index (P<0.05) during NREM sleep in both groups (n=36), but no significant difference in the percent increase of spike index (P>0.05). Conclusion : The IEDs were activated significantly during NREM sleep both in patients with and without organic brain lesions, but there were no differences in the degree of activation in both groups. The activating effect of NREM sleep was not correlated with clinical factors such as, frequent nocturnal seizures, frequent generalized tonic clonic seizures, type of epilepsy and taking anticonvulsants. We conclude that the routine EEG used to evaluate epileptiform discharges in epileptic patients should include sleep recordings after partial sleep deprivation.
Ropka-Molik, Katarzyna;Bereta, Anna;Zukowski, Kacper;Tyra, Miroslaw;Piorkowska, Katarzyna;Zak, Grzegorz;Oczkowicz, Maria
Asian-Australasian Journal of Animal Sciences
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v.31
no.10
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pp.1565-1574
/
2018
Objective: The aim of the present study was to identify genetic variants based on RNA-seq data, obtained via transcriptome sequencing of muscle tissue of pigs differing in muscle histological structure, and to verify the variants' effect on histological microstructure and production traits in a larger pig population. Methods: RNA-seq data was used to identify the panel of single nucleotide polymorphisms (SNPs) significantly related with percentage and diameter of each fiber type (I, IIA, IIB). Detected polymorphisms were mapped to quantitative trait loci (QTLs) regions. Next, the association study was performed on 944 animals representing five breeds (Landrace, Large White, Pietrain, Duroc, and native Puławska breed) in order to evaluate the relationship of selected SNPs and histological characteristics, meat quality and carcasses traits. Results: Mapping of detected genetic variants to QTL regions showed that chromosome 14 was the most overrepresented with the identification of four QTLs related to percentage of fiber types I and IIA. The association study performed on a 293 longissimus muscle samples confirmed a significant positive effect of transforming acidic coiled-coil-containing protein 2 (TACC2) polymorphisms on fiber diameter, while SNP within forkhead box O1 (FOXO1) locus was associated with decrease of diameter of fiber types IIA and IIB. Moreover, subsequent general linear model analysis showed significant relationship of FOXO1, delta 4-desaturase, sphingolipid 1 (DEGS1), and troponin T2 (TNNT2) genes with loin 'eye' area, FOXO1 with loin weight, as well as FOXO1 and TACC2 with lean meat percentage. Furthermore, the intramuscular fat content was positively associated (p<0.01) with occurrence of polymorphisms within DEGS1, TNNT2 genes and negatively with occurrence of TACC2 polymorphism. Conclusion: This study's results indicate that the SNP calling analysis based on RNA-seq data can be used to search candidate genes and establish the genetic basis of phenotypic traits. The presented results can be used for future studies evaluating the use of selected SNPs as genetic markers related to muscle histological profile and production traits in pig breeding.
Park, Soonjoo;Yang, Sumin;Yoon, Jihye;Choi, Hannha;Han, Jayeon;Kwon, Sooyeon
The Journal of the Korea Contents Association
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v.16
no.4
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pp.45-55
/
2016
The purpose of this study was to identify the relation between mobile phone use and visual display terminal syndrome symptom experience in female students from middle school and high school. The convenience sample consisted of 349 female students in four schools. The data were collected from May to June in 2013 using VDTS Subjective Symptom Questionnaire. Descriptive statistics, Kruskal-Wallis test, and Mann-Whitney U test were used to analyze the data using SPSS 21.0. Almost all (96.3%) female students use mobile phone. Among them, 87.7% of the subjects experienced more than one VDTS symptom and the average score was $.39{\pm}.41$ in VDTS symptom experience. Eye related symptom was most experienced and musculoskeletal symptom was the highest in severity among five subdomain of VDTS symptoms. There were significant differences in VDTS symptom scores in accordance with posture, hours of use, and break type during mobile phone use. These findings suggest that the education program for adolescents would be necessary, and the development of checklist would be useful for adolescents to check themselves.
Duck viral hepatitis is an acutic, highly infectious viral disease of young ducklings. The most practical means for controlling duck viral hepatitis is the vaccination of ducklings or of a breeding stock. We attempted to develop a vaccine strain of duck hepatitis virus (DHV) using a Korean isolate by serial chicken embryo passages. The propagation of DHV in chicken embryos was carried 140 passages. After the $50^{th}$ passage, of which the virus was non-pathogenic for ducklings, approximately every $20^{th}$ passage of the virus was tested for vaccinal efficacy. Both the $70^{th}$ and $90^{th}$ passage of the virus gave good protection against challenge infection to a DHV-DRL reference strain(type 1) and a virulent Korean isolate. The $110^{th}$, $125^{th}$ and $140^{th}$ passage of the virus were less protective than the $70^{th}$ and $90^{th}$ passage, which means that more than $110^{th}$ passage may lead to over-attenuation of the virus. Ducklings vaccinated with the chicken-embryo-adapted virus by oral, intramuscular or eye drop administration showed earlier resistance to challenge infection from 3 to 7 days postvaccination. Of the above methods, ducklings vaccinated intramuscularly presented the most rapid resistance against challenge. The minimum immune dose of the chicken-embryo-adapted virus in ducklings was also studied. Ducklings inoculated with a dose of $10^{2.0}\;ELD_{50}$ and below were not fully protected against challenge with a virulent DHV, showing a protection rate of 67% to 73%, but ducklings inoculated with a dose of $10^{3.0}\;ELD_{50}$ and over were completely protected. The virus yield of the chicken-embryo-adapted DHV was examined at 24hrs and 48hrs of the incubation time in the allantoic fluid, embryo head and embryo minus head of the embryonating egg. In all three components, the titer of the virus was higher at 48 hours than that at 24 hours after incubation. And the titer of the virus was higher in the embryo minus head, embryo head and the allantoic fluid, in order. Field trials for evaluating the efficacy of the attenuated DHV as a live vaccine were done in duck farms with about 25% mortality of flocks resulting from duck viral hepatitis. After the use of the experimental vaccine, the mortality due to duck viral hepatitis was dramatically reduced in the farms. These results indicated that the attenuated DHV using a Korean isolate could be a good candidate as a live vaccine strain of DHV in Korea.
We have used two kinds of P element constructs, Pc[(ry+)B] and p[(ry+)$\Delta$SX9], for genetic transformation by microinjection of D. melanogaster. Pc[(ry+)B] construct carrying the rosy gene within an autonomous P element was injected into a true M strain caring the ry506. mutation. The source of transposase for microinjection and transformation was provided by a P element helper plasmid designated p-$\Delta$2-3hs$\pi$, which was co-injected with nonautonomous P[(ry+)$\Delta$SX9] construct into same ry506 M strains. A dechorination method was adopted and 35 independent transformed lines were obtained froin 1143 G0 Injected (35/1143). About 20% of the injected embryos eclosed as adults. Among G0 eclosed flies, approximately 40% exhibited eye color that was similar to wild-type (ry+), but about 60% of fertile G0 transformed lines appeared to have no G1 transformants. Therefore it is unlikely that G0 expression requires integration of the rosy transposon into chromosomes. Pc[(ry+)B] and P[(ry+)$\Delta$SX9] constructs were found to be nearly same in the frequency of element-mediated transformation. On the basis of these results, nonautonomous P elements constructs could he used as same effective vectors in P element-mediated transformation for introducing and fixing genes in insect populations.
Disposable contact lenses, which are one type of soft contact lenses, provide convenience in use, but also cause various ocular infectious diseases. Microorganisms that cause eye diseases include Acanthamoeba, bacteria, Fungi, and so on. It is impossible to prevent microorganism contamination completely due to the use of hands as wearing contact lenses. The contamination by various microorganisms leads to infectious keratitis, but it is not well known for the exact microorganisms that affect the disease. For this reason, to identify the microorganisms, two groups that are commonly used for disinfection of lenses were divided: normal saline solution and multiple purpose solution. Using these solutions the degree of microorganism contamination was observed according to the days of 1, 3, 5, 10, and 15. Twenty students by two groups from Ophthalmic Optics department at D college in Daegu Metropolitan city participated in the experiment after their ocular health conditions were checked. During they wore one-day disposable lenses for 1, 3, 5, 10, and 15 days, bacteria were cultured in media. The results, which were Gram stained by selecting the cultured colonies, show as followings: Gram positive cocci 33%, Gram-negative cocci 2%, Gram positive bacilli 34%, and the Gram negative bacilli 31%, respectively. As for the identification of potential pathogens, VITEK system and API kit methods were used. Keratitis caused by bacteria known as Staphylococcus aureus, Pseudomonas aeruginosa were detected as a result of wearing contact lenses. This study examined the distribution of bacteria as wearing one-day disposable contact lenses and pathogenic bacteria according to the duration of wearing them. In conclusion, the importance of hygiene when using contact lenses is suggested.
Chungbuk CHP research team, Chungbuk CHP research team;Jeon, Mi-Yang
Research in Community and Public Health Nursing
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v.14
no.3
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pp.507-519
/
2003
Purpose: The purpose of this study was to identify the prevalence, health behaviors, and control of hypertension in rural areas in Korea. Method: A total of 927 subjects above age 20 were selected from the areas which fell under the jurisdiction of the 24 Community Health Center located in Chungcheongbuk-do. The employees in the Community Health Center visited and interviewed patients. Data were collected using a questionnaire from July to October 2002. Result: The result showed that women had higher hypertension prevalence rates than men and the increment of its rate leveled up according to age. The hypertension prevalence rate was significantly high when the monthly income was less than 1 million won, their type of the Medical Insurance was the Guardian, they were only able to read Korean characters, and they were bereaved of spouses. In the Health behavior related to hypertension, the hypertension group showed a significantly lower level than the non- hypertension group in terms of drinking rate, smoking rate, intake of salt and intake of meat. There was no significant difference in the exercise rate and coffee intake rate between these groups. In the degree of the obesity the hypertension group was significantly higher than the non-hypertension group. The factors related to hypertension were that the duration for the incidence of hypertension was 12 to 60 months and took up 41.2%. The places where the medical check-ups occurred were the Community Health Center at 46.6%, the medical institution was mostly hospitals recording 46.5%. There were 66.1% of the targets who knew well about their blood pressure and there were 64.7% people who received education about it. As for the education place, the rate of Community Health Center was mostly high and it stood at 77.0%. In the aspect of the management of hypertension, the targets who took medicine on a regular basis were up to 76.1% and the targets who measured blood pressure once a month happened to be about 46.1 %. The targets who always recorded their blood pressure were 3.8%, chest X-ray as a related examination of hypertension reached 32.6%, electrocardiogram examination was 36.2%, cholesterol and serum lipid examination took up 33.6%, and the eye ground examination took 7.3%, which showed the lowest level of all.
So, Jea-Moo;Lim, Young-Tae;Kim, Yong-Seok;Cho, Bum-Wook
Korean Journal of Applied Biomechanics
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v.15
no.3
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pp.71-78
/
2005
The purpose of this research was to conduct an analysis on the factors that determine the distance at the time of target swing based on the use of late hitting of outstanding college golfers to verify the difference between late hitting and the distance that target increases in regular swing and the distance. Then, this research conducts an analysis on the correlation between club head velocity, ball velocity, launch angle, back spin, meet ratio and distance that become kinematics variables at the time of target swing. To attain the above mentioned purpose, 25 outstanding college players with average experience and handicap of 6 years and 5, respectively, were targeted Comparative analysis on two swing that target increase in regular and the distance was conducted by used driver. When it pertained to two types of swing. analysis system comprised of an analytical software called the Science Eye of the Bridgestone and peripheries was used to define the relationship between variables of club head velocity, ball velocity, launch angle, back spin, meet ratio that become kinematics variables. As for the method of processing data pertaining to the factors that determine the distance, differences of distance by the type of swing was verified by using independent T-test that leveraged SPSS 120 statistics program. Moreover, level of correlation between variables that contribute to the increase in distance through relation of correlation, and analysis of tendencies was conducted to analyze tendency of non-distance to increase in accordance to the increase of each variable. Key results produced through this experiment are as follows: 1. Artificial late hitting for increased non-distance that targets skilled players had effect on increased the distance(p<. 05). 2 The drive distance is correlated with each measured variable that is positive correlation to ball velocity, club head velocity, meet ratio and relation of back spin and launch angle are negative correlation. ball velocity and club head velocity are very high correlated with drive distance(p<.01), back spin and distance are negative correlation(p<.01). 3. Among each measured variable increasing the club velocity is the most contribution, and ball velocity and meet ratio and the increasing launch angle and back spin is negative effect for increasing distance.
Purpose : We identified correlation between macular thickness and RNFL (retina nerve fiber layer) measured by OCT and axial length in Korean children divided as three groups according to refractive errors. Methods : In total, 134 eyes of 67 Korean children who experienced no eye disease and ophthalmology surgery were involved in this study and then divided as three groups such as hyperopic, emmetropic and myopic groups. Macular thickness and RNFL thickness were measured with Cirrus HD-OCT, and axial length was done with IOL Master.Macular thickness and RNFL thickness were measured by Cirrus HD-OCT, and axial length using IOL Master. Correlation between axial length and retinal thickness in three groups according to refractive errors was investigated. Results : The type of refractive error measured by axial length was myopic, emmetropic and hyperopic groups in order, showing significant difference (p<0.05). The center thickness of macular was myopic, emmetropic and hyperopic groups in order, showing significant difference(p<0.05). The thicknesses of superior, nasal and inferior regions in peripheral macula were the thinnest in myopic group (p<0.05). It was shown that positive correlation was found between the center thickness of macula and axial length (r=0.283, p<0.05), while negative correlation was found between the peripheral thickness of RNFL and axial length. The temporal thickness of RNFL represented the thickest in myopic group, showing positive correlation with axial length(r=0.39, p<0.05). The superior, nasal and inferior thickness of RNFL represented negative correlation with axial length, showing statistically significant in the nasal thickness of RNFL(r=-0.23, p<0.05). Conclusion : Through this study, we identified correlation between macular thickness, the thickness of RNFL and axial length using OCT in Korean children, and also found the differences in three refractive error groups.
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