• 생물정신의학
• /
• 제3권1호
• /
• pp.109-114
• /
• 1996

정신분열증에서 interleukin의 변화는 그 질환에서의 면역학적 가설의 부가적인 증거로 제시되어 왔다. 본 연구에서는 quantitative "sandwich" ELISA 법을 이용하여 26명의 정신분열증 환자를 대상으로 연령을 상응시킨 정상대조군과 비교해 IL-$1{\beta}$, IL-2, IL-6 농도의 차이가 있는지 알아보았다. 또한 정신분열증 환자에서 IL농도와 양성증상 및 음성증상, 연령, 유병기간 등의 임상변인과의 상관관계를 조사하여 다음과 같은 결론을 얻었다. 1) 정신분열증군이 정상대조군보다 IL-2 농도의 유의한 중가를 나타내었으며, IL-$1{\beta}$와 IL-6는 유의한 차이가 없었다. 2) 정신분열증군에서 IL-2, IL-6와 음성증상간의 유의한 상관관계가 있었다. 본 연구는 정신분열증의 연역학적 가설을 지지하고 있으며, IL은 정신분열증의 음성증상에 관련된다고 생각된다. 앞으로 국내에서도 이러한 환자들의 임상적 특징, 진단, 치료에 관심을 갖아야 할 것으로 사료된다.

• The Plant Pathology Journal
• /
• 제23권4호
• /
• pp.272-280
• /
• 2007

Isolates of Cucumber mosaic virus (CMV) collected in Korea, were compared with their pathological features in tobacco and zucchini squash. Full-length cDNA clone of RNA3 was generated by using long-distance RT-PCR. Transcript RNA3 from the cDNA clone was inoculated onto host plants with transcripts RNA1 and RNA2 of Fny strain, generating RNA3-pseudorecombinant CMV. Timing and severity of systemic symptom was not significantly different among the pseudorecombinant CMVs in tobacco, compared with strains Fny-CMV and Pf-CMV. However, the pseudorecombinant CMVs induced two different systemic symptoms (mosaic vs. chlorotic spot) in zucchini squash. Based on symptom induction, the pseudorecombinant CMVs were categorized into two classes. The severity and timing of symptoms were correlated with viral RNA accumulations in systemic leaves of zucchini squash, suggesting that different kinetics of virus movement associated with CMV proteins are crucial for systemic infection and symptom development in zucchini squash. The analysis of movement proteins (MP) of CMV strains showed high sequence homology, but the differences of several amino acids were found in the C-terminal region between Class-I-CMV and Class-II-CMV. The analysis of coat proteins (CP) showed that the CMV isolates tested belonged to CMV subgroup I and the viruses shared overall 87-99% sequence identity in their genomes. Phylogenetic analysis of MP and CP suggested that biological properties of Korean CMV isolates have relationships associated with host species.

• 식물병연구
• /
• 제10권1호
• /
• pp.30-33
• /
• 2004

현재까지 벼 줄무의잎마름병(Rice stripe virus, RSV)은 남부지방에 국한되어 발생되어 왔다. 그러나 최근에는 RSV의 발생이 충청도, 경기도를 포함한 중부지방까지 확산되는 경향을 나타내고 있다. 이병의 병징은 육안으로는 생리적인 장해 현상과 구분하기가 힘들다 본 실험에서는 이병주 및 애멸구(Laodelphax striatellus)로 부터 viral RNA를 추출한 후 RNA복제효소 및 외피단백질유전자에 특이적인 primer를 제작하여 RT-PCR법에 의해 RSV를 검정하였다. 그결과 이병식물체 및 보독 애멸구로부터 RNA복제효소 유전자에 특이적인 band(1,023 bp) 및 외피단백질유전자에 특이적인 band(969 bp)가 관찰되었다.

• 한국식물병리학회:학술대회논문집
• /
• 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
• /
• pp.107.2-108
• /
• 2003

Viral disease symptoms were investigated in the field grown Longiflorum hybrid cultivars, and the damages caused by infection with Lily mottle virus (LMoV) and Cucumber mosaic virus (CMV) were assessed by comparing growth of plants produced from seeds of Longiflorum hybrid cultivar both infected by artificial inoculation and free from infection with theses viruses. Dominant symptom caused by spotaneous infection with LMoV and CMV in the field was mottle combined with chlorotic stripe on leaves. LMoV developed brownish necrotic lesion on floral leaves. The incidence of viral disease by mixed infection with LMoV, CMV or Lily symptomless virus (LSV) in the filed grown Longiflorum hybrid cultivar, cultivated for more than 6 years, was 80 to 84 percent. In comparison with virus-free plants, plants doubly infected with CMV and LMoV by artificial inoculation decreased stem length by 14 percent and fresh weight by 38 percent. In conclusion, flower quality and the stem length of Longiflorum hybrid cultivar were affected by LMoV and CMV infection.

• 농업과학연구
• /
• 제44권2호
• /
• pp.145-180
• /
• 2017

Alternanthera mosaic virus (AltMV) is a member of the genus Potexvirus which has been known for less than twenty years, and has been detected in Australasia, Europe, North and South America, and Asia. The natural host range to date includes species in at least twenty-four taxonomically diverse plant families, with species in at least four other families known to be infected experimentally. AltMV has been shown to differ from Potato virus X (PVX), the type member of the genus Potexvirus, in a number of ways, including the subcellular localization of the Triple Gene Block 3 (TGB3) protein and apparent absence of interactions between TGB3 and TGB2. Differences between AltMV variants have allowed identification of viral determinants of pathogenicity, and identification of residues involved in interactions with host proteins. Infectious clones of AltMV differing significantly in symptom severity and efficiency of RNA silencing suppression have been produced, suitable either for high level protein expression (with efficient RNA silencing suppression) or for Virus-Induced Gene Silencing (VIGS; with weaker RNA silencing suppression), demonstrating a range of utility not available with most other plant viral vectors. The difference in silencing suppression efficiency was shown to be due to a single amino acid residue substitution in TGB1, and to differences in subcellular localization of TGB1 to the nucleus and nucleolus. The current state of knowledge of AltMV biology, including host range, strain differentiation, host interactions, and utility as a plant viral vector for both protein expression and VIGS are summarized.

• 한국연초학회지
• /
• 제11권1호
• /
• pp.11-17
• /
• 1989

$AOS(\alpha-olefin),$ LAS(linear alkyl benzene), OSS(dioctyl sulfosuccinate) 및 SAS (dodecyl benzene sulfonic acid)등 4종 계면활성제의 TMV 감염저지 효과를 잎담배 품종 Xan-thi-nc 및 NC 82를 이용하여 조사하였다. 각 계면활성제를 2,500ppm 농도로 담배잎에 처리한 경우 바이러스(TMV) 또는 TMV RNA를 접종했을 때 모두 98% 이상의 감염저지 효과를 나타냈다. 그러나 이들을 담배 근권토양에 처리 3일후 잎에 Virus를 접종하여 병징 및 엽중 Virus 농도를 조사한 결과 무처리구와 차이가 없어 침투이행에 의한 TMV 감염저지 효과는 인정되지 않았다. 순화된 바이러스를 각 계면활성제 2,500ppm 용액과 혼합한 후 초고속원심분리에 의해 다시 Virus를 회수하여 활성을 조사한 결과 LAS는 96% 이상 Virus를 불활성화시켰으며, 이 외는 바이러스 활성에 영향을 미치지 못했다. 또 각 계면활성제가 처리된 Virus 입자의 형태는 무처리입자와 차이가 없었다. 이같은 결과들로 미루어 4종의 계면활성제가 나타낸 TMV 감염저지 효과는 바이러스 입자의 파괴 또는 감염초기 바이러스 입자의 외피 단백질 탈피억제에 의한 것이 아닌 것으로 판단된다.

• The Plant Pathology Journal
• /
• 제16권5호
• /
• pp.269-279
• /
• 2000

Alfalfa mosaic alfamoviruses(AIMV) were isolated from infected potato (Solanum tuberosum) and azuki bean (Paseolus angularis) in Korea. Two AIMV isolated from potatoes were named as strain KR (AIMV-KR1 and KR2) and AIMV isolated from azuki bean was named as strain Az (AIMV-Az). Each isolated AIMV strain was characterized by using their host ranges, symptom developments, serological relations and nucleotide sequence analysis of coat protein (CP) gene. Strains KR1, KR2, and Az were readily transmitted to 20 of 22 inoculated plant species including bean, cowpea, tomato, tobacco, and potato. AIMV-KR1 and KR2 produced the typical symptoms like chlorotic or necrotic spots in Chenopodium quinoa and Solanum tuberosum cv. Superior. AIMV-Az caused bright yellow mosaic symptom and leaf malformation in Nicotiana glauca, which were different from the common mosaic symptom caused by AIMV-KR1 and KR2. Electron microscope observation of purified virus showed bacilliform virions containing a single-stranded plus-strand RNAs of 3.6, 2.6, 2.0 and 0.9 kbp in length, respectively, similar in size and appearance to those of Alfamovirus. In SDS-PAGE, the coat protein of the two viruses formed a consistent band that estimated to be about 24kDa. The CP genes of the AIMV strains, KR1, KR2, and Az have been amplified by RT-PCR using the specific primers designed to amplify CP gene from viral RNA-3, cloned and sequenced. Computer aided analysis of the amplified cDNA fragment sequence revealed the presence of a single open reading frame capable of encoding 221 amino acids. The nucleotide and peptide sequence of viral CP gene showed that strain KR1, KR2, and Az shared highest nucleotide sequence identities with AIMV strain 425-M at 97.7%, 98.2%, and 97.2%, respectively. CP gene sequences of two strains were almost identical compared with each other. Altogether, physical, serological, biological and molecular properties of the purified virus.

• 한국식물병리학회:학술대회논문집
• /
• 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
• /
• pp.74.2-74
• /
• 2003

Arabidopsis infected with beet curly top virus (BCTV) has the systemic symptoms like stunting of Plant growth, curling of leaves and shoot tips, and callus induction. The regulation of sucrose metabolism by BCTV infection is essential for obtaining the energy source in the process of virus replication and symptom development. Sucrose metabolism-associated gene expression and biochemical enzyme activity were analyzed with the rossette leaves and inflorescencestems of BCTV infected Arabidopsis by the time course of 1, 7, 14, 21 day postinoculation. The expression of invertase and sucrose synthase genes ( encoding sucrose-cleaving enzymes )was increased and reversely the level of Atkin10a ( sucrose non-fermenting gene ) was decreased, resulting by semi-quantitative reverse transcription polymerase chain reaction. The biochemical analysis of invertase and sucrose synthase activity was performed. The activity of neutral invertase in the inflorescence stems was elevated remarkably. The photosynthetic response in the source of sucrose metabolism was consistent with the down-regulation of ribulose 1,5 bisphosphate carboxylase gene, and lower activity than mock-inoculated plants. The levels of genes pertaining to the cell cycle, hormone, and biotic stress-related pathway showed an increase or a decrease dependent on viral symptoms. Therefore, sucrose sensing by BCTV infection can regulate the expression of sucrose metabolism-related key enzymes such as invertase and Atkin10a, and these gene products might influence to symptom development.

• 대한한방내과학회지
• /
• 제25권4호
• /
• pp.450-456
• /
• 2004

Guillain-Barre syndrome, or acute inflammatory polyneuritis, is a disorder in which the body's immune system attacks parts of the peripheral nervous system. The causes and mechanisms of this syndrome are unknown. Typically, Guillain-Barre syndrome can be diagnosed from the patient's symptoms and physical examination such as the rapid onset of weakness, paralysis and loss of reflexes. The analysis of CSF and electrical tests on nerve and muscle function can be performed to confirm the diagnosis. Most cases occur shortly after a viral infection. This is a clinical report about one patient suspected as having Guillain-Barre syndrome. The patient, a 62-year-old man had weakness in both legs after gastroduodenal disease. His weakness and general condition improved after Korean medical treatments, so this is reported as a potential treatment.

• 한국연초학회지
• /
• 제19권1호
• /
• pp.11-17
• /
• 1997

A flue-cured tobacco variety (Nicotiana tabacum cv. Wisconsin) was used for Plant transformation with the complementary DNA (cDNA) of potato virus Y-necrosis strain (PVY-VN) replicase gone (Nb) which was synthesized through reverse-transcription Primed with oligo(dT) and Polymerization using RNase H-digested template. The cDNA was cloned into Plant expression vector Plasmid (PMBP2), and introduced into tobacco plants by co-culturing tobacco leaf disks with Agrobacterium tumefaciens LBA4404 containing the plasmid before Plant regeneration. Eight Plants, in which the inserted cDNA fragment was detected by Polymerase chain reaction (PCR), out of 70 putative transformants inserted with sense-oriented Mb cDNA showed no symptom at 3 weeks after inoculation, while the other 62 plants, and all plants with vector gone only and antisense-oriented NIb cDNA had susceptible vein-necrosis symptoms. However, only 2 of the 8 resistant plants were highly resistant, which remained symptomless up to 10 weeks after inoculation. Among the first progenies (T1) from self-fertilized seeds of the two resistant transgenic plants, less than 10 % of 71 plants appeared highly resistant (with no symptom), 70% moderately resistant (with mild symptoms on 1 - 2 leaves), and about 20% susceptible (with susceptible symptoms on 3 or more leaves) at 3 weeks after inoculation. These results suggest that the PVY resistance was inherited in the 71 generation. Key words : potato virus Y. viral replicase gene, transgenic tobacco Plants, resistance.