• Title/Summary/Keyword: 5p deletion

검색결과 163건 처리시간 0.027초

소아 IgA 신병증 환자에서 미토콘드리아 DNA 돌연변이 분석 (Mutational Analysis of Mitochondria DNA in Children with IgA Nephropathy)

  • 엄태민;장창한;김형규;김나리;정윤서;한진;정우영
    • Childhood Kidney Diseases
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    • 제16권2호
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    • pp.73-79
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    • 2012
  • 목적: 일부 사구체 질환 그리고 말기 신부전 환자를 대상으로 한 연구들에서 특정 부위의 돌연변이와 deletion 그리고 미토콘드리아 DNA copy 수 등이 예후적인 경과와 관련이 있다는 주장이 제기되었다. 연구자들은 소아 IgA 신병증 환자를 대상으로 혈소판을 이용한 미토콘드리아 DNA 전체 염기서열 분석을 실시하였다. 방법: 인제의대 부산백병원 소아청소년과에서 신생검을 실시하여 IgA 신병증으로 확진된 7명의 환자를 대상으로 하였다. 대상 환아들은 동반된 전신질환이 없고 가족력상 신장질환이 없는 경우로 국한 하였다. 신생검 당시 혈청 크레아티닌 치와 사구체 여과율은 모두에서 정상 범위였으며, 각각의 연령 대에 정상 범위의 혈압을 보였다. 환자의 성별은 남자 4명 여자 3명 이었다. 환자들은 단백뇨의 정도에 따라 두 군으로 분류하였다. 결과: 신생검 당시 환자들의 평균 나이는 $11.5{\pm}2.2$세 였으며 최종 추적검사 당시의 나이는 평균 $17.9{\pm}3.2$세 였다. 환자들의 평균 추적관찰 기간은 평균 $7.8{\pm}3.1$년 이었다. 환자들은 입원당시 단백뇨의 정도에 따라 2군으로 분류하였다. 1군은 입원당시 단백뇨가 동반되지 않았던 환자들이며 2군은 신증후군의 임상 양상을 보인 환자들이었다. 최종 추적 관찰 당시 양군의 혈청 크레아티닌 치, BUN은 모두 정상 범위였다. 혈청 알부민 치는 2군에서 $3.7{\pm}0.6g/dL$로 1군의 $4.7{\pm}0.2g/dL$에 비해 유의하게 낮았으며(P=0.0241), 혈청 콜레스테롤치는 2군에서 $222.7{\pm}35.7mg/dL$로 1군의 $148.3{\pm}29.1mg$ 보다 유의하게 높았다(P=0.0283). 24시간 채집뇨상의 총단백량도 2군에서 $1,466.0{\pm}742.5\;gm$으로 1군의 $122.5{\pm}48.1\;gm$에 비해 유의하게 높았다(P=0.0135). 단회 소변을 이용한 단백/크레아티닌 비는 2군에서 $1.8{\pm}1.6$으로 1군의 $0.2{\pm}0.2$에 비해 높았으나(P=0.0961), 통계적인 유의성은 없었다. 2명의 환자에서 8,272-8,281(CCCCCTCTA) 부위 염기서열 누락을 관찰되었다. 단백뇨 정도에 따라 분류한 두군 모두에서 각각 한명씩 염기 서열의 누락이 있었다. 누락된 부위는 미토콘드리아 유래 발현되는 단백질 서열 등에 관련 없는 비부호화부위(non coding region) 이었다. 8,272-8,281 부위를 제외한 미토콘드리아 DNA 염기서열은 모두 정상이었다. 결론: 소아 IgA 신병증에서도 mtDNA common deletion이 증명됨으로해서 향후 소아 IgA 신병증에서 미토콘드리아의 기능 이상이 진행성 임상적 경과에 어떠한 영향을 미칠 수 있는 지에 대한 추가 연구가 필요하다고 생각한다.

Dynamic Susceptibility Contrast (DSC) Perfusion MR in the Prediction of Long-Term Survival of Glioblastomas (GBM): Correlation with MGMT Promoter Methylation and 1p/19q Deletions

  • Kwon, Yong Wonn;Moon, Won-Jin;Park, Mina;Roh, Hong Gee;Koh, Young Cho;Song, Sang Woo;Choi, Jin Woo
    • Investigative Magnetic Resonance Imaging
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    • 제22권3호
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    • pp.158-167
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    • 2018
  • Purpose: To investigate the surgical, perfusion, and molecular characteristics of glioblastomas which influence long-term survival after treatment, and to explore the association between MR perfusion parameters and the presence of MGMT methylation and 1p/19q deletions. Materials and Methods: This retrospective study was approved by our institutional review board. A total 43 patients were included, all with pathologic diagnosis of glioblastoma with known MGMT methylation and 1p/19q deletion statuses. We divided these patients into long-term (${\geq}60\;months$, n = 7) and short-term (< 60 months, n = 36) survivors, then compared surgical extent, molecular status, and rCBV parameters between the two groups using Fisher's exact test or Mann-Whitney test. The rCBV parameters were analyzed according to the presence of MGMT methylation and 1p/19q deletions. We investigated the relationship between the mean rCBV and overall survival using linear correlation. Multivariable linear regression was performed in order to find the variables related to overall survival. Results: Long-term survivors (100% [7 of 7]) demonstrated a greater percentage of gross total or near total resection than short-term survivors (54.5% [18 of 33]). A higher prevalence of 1p/19q deletions was also noted among the long-term survivors (42.9% [3 of 7]) than the short-term survivors (0.0% [0 of 36]). The rCBV parameters did not differ between the long-term and short-term survivors. The rCBV values were marginally lower in patients with MGMT methylation and 1p/19q deletions. Despite no correlation found between overall survival and rCBV in the whole group, the short-term survivor group showed negative correlation ($R^2=0.181$, P = 0.025). Multivariable linear regression revealed that surgical extent and 1p/19q deletions, but not rCBV values, were associated with prolonged overall survival. Conclusion: While preoperative rCBV and 1p/19q deletion status are related to each other, only surgical extent and the presence of 1p/19q deletion in GBM patients may predict long-term survival.

N-Acetyltransferase 2와 glutathione S-transferase mu 및 theta 다형성이 방광암 발생에 미치는 영향에 대한 환자-대조군 연구 (A case-control study on the effects of the genetic polymorphisms of N-acetyltransferase 2 and glutathione S-transferase mu and theta on the risk of bladder cancer)

  • 김헌;김원재;이형래;이무송;김철환;김로사;남홍매
    • Journal of Preventive Medicine and Public Health
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    • 제31권2호
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    • pp.275-284
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    • 1998
  • 1996년 3월부터 1996년 12월까지 충북대학교병원 비뇨기과에 입원하여 치료를 받은 방광암 환자 67명과 암 아닌 다른 질환을 가진 대조군 67명을 대상으로 흡연, 음주, 직업력 등을 포함한 생활 습관과 NAT2와 GSTM1, 그리고 GSTT1 유전자 다형성 양상을 조사하여 다음과 같은 결론을 얻었다. 1. NAT2 다형성 분포는, 환자군이 slow, intermediate, rapid acetylator가 각각 3.0%, 38.8%, 58.2%, 그리고 대조군이 7.6%, 40.9%, 51.5%였으며, NAT2의 활성과 방광암 위험도 사이의 관련성은 유의하지 않았다($\chi^2_{trend}=1.18$, P-value>0.05). 2. GSTM1 결손은 환자군의 68.7%, 대조군의 49.3%에서 확인되었으며, OR(95% 신뢰구간)이 2.23(1.12-4.56)으로, 방광암 발생의 위험인자로 나타났다. 3. GSTT1은 환자군의 26.9%,그리고 대조군의 43.3%에서 결손이 있는 것으로 나타나서, GSTT1 결손은 방광암에 대하여 보호효과가 있는 것으로 관찰되었다(OR: 0.48, 95% 신뢰구간: 0.23-0.99). 4. 흡연 여부는 방광암의 발생에 유의한 영향을 미치지 않는 것으로 나타났는데(OR=1.85, 95% CI: 0.85-4.03), 이는 환자군과 대조군의 흡연률이 모두 높기 때문으로 판단된다. 5. 그 외, 음주력, 직업력, 수혈 여부, 그리고 피임시술의 과거력 등의 요인들은 방광암 발생과 유의한 관련성이 없는 것으로 나타났다.

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비육후기 사료에서 비타민-미량광물질 첨가제의 제거가 돼지의 성장 능력, 근육 내 비타민 E 및 분 중 미량광물질 함량에 미치는 영향 (Effects of Deletion of Supplementary Vitamins and Trace Minerals on Performance, Muscle Vitamin E and Fecal Trace Mineral Contents in Finishing Pigs)

  • 이승철;이종언;김규일
    • Journal of Animal Science and Technology
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    • 제45권4호
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    • pp.543-550
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    • 2003
  • 비육후기 사료에서 비타민-미량광물질 첨가제의 제거가 돼지의 성장, 사료효율, 혈 중 헤모글로빈 농도, 돈육 내 비타민 E 및 분 중 미량광물질 함량에 미치는 영향을 구명하기 위하여 사육환경이 서로 다른 돈사에서 두 번의 시험이 수행되었다. 시험 1에서는 45두의 비육돈 (평균체중 70 kg, 3원교잡종)을 돈방 당 5두씩 배치하고, 대조구 (비타민-미량광물질 프리믹스 첨가), 프리믹스 50% 및 0% 첨가구에 각각 3돈방을 배치하여 환기와 온도가 제어되지 않는 재래식 톱밥돈사에서 7주동안 사양한 후 도축하였다. 시험 2에서는 돈사 환기 및 온도가 자동 조절되는 슬러리 무창돈사에서 36두의 요크셔 비육돈 (평균체중 56 kg)을 돈방 당 4두씩 배치, 대조구(비타민-미량광물질 프리믹스 첨가), 프리믹스 0% 및 프리믹스 0%+비타민 E(100 mg $\alpha$-tocopherol acetate/kg) 첨가구에 각각 3돈방을 배치하여 7주 동안 사양 후 도축하였다. 두 시험에서 처리 간 일당증체량, 사료섭취량, 사료효율 및 도체특성은 유의차가 없었으나 시험 2에서는 대조구의 일당증체량이 약간 높은 경향을 보였다. 프리믹스의 미 첨가는 헤모글로빈 함량이나 적혈구 수에 영향을 주지 않았다. 분 중 Mn과 Zn 함량은 대조구에서 프리믹스를 첨가하지 않은 다른 처리에서 보다 매우 높게 (P<0.01) 나타났다. 혈 중 미량광물질 함량은 처리간 유의차를 보이지 않았다. 햄 근육 (gluteus maxima) 내 $\alpha$-tocopherol 함량은 프리믹스를 첨가하지 않음으로써 감소하였으나 (P〈 0.01), 도살 전 2주 동안 $\alpha$-tocopheryl acetate(100mg/kg diet)를 급여함으로써 프리믹스 첨가구보다도 더 증가하였다 (P< 0.01). 본 연구결과 돼지 비육후기 사료에 비타민-미량광물질 프리믹스의 첨가는 성장율에는 큰 영향을 미치지 않으면서 분 중 일부 미량광물질을 증가시키기 때문에 경제적인 손실과 토양오염의 위험이 있음을 말해 준다. 프리믹스 제거로 인한 고기 내 비티민 E 함량의 감소는 마지막 2주동안 $\alpha$-tocopherol 를 첨가 급여함으로써 회복될 수 있다.

Clinical utility of chromosomal microarray analysis to detect copy number variants: Experience in a single tertiary hospital

  • Park, Hee Sue;Kim, Aryun;Shin, Kyeong Seob;Son, Bo Ra
    • Journal of Genetic Medicine
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    • 제18권1호
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    • pp.31-37
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    • 2021
  • Purpose: To summarize the results of chromosomal microarray analysis (CMA) for copy number variants (CNVs) detection and clinical utility in a single tertiary hospital. Materials and Methods: We performed CMA in 46 patients over the course of two years. Detected CNVs were classified into five categories according to the American College of Medical Genetics and Genomics guidelines and correlated with clinical manifestations. Results: A total of 31 CNVs were detected in 19 patients, with a median CNV number per patient of two CNVs. Among these, 16 CNVs were classified as pathogenic (n=3) or likely pathogenic (LP) (n=11) or variant of uncertain significance (n=4). The 16p11.2 deletion and 16p13.11 deletion classified as LP were most often detected in 6.5% (3/46), retrospectively. CMA diagnostic yield was 24.3% (9/37 patients) for symptomatic patients. The CNVs results of the commercial newborn screening test using next generation sequencing platforms showed high concordance with CMA results. Conclusion: CMA seems useful as a first-tier test for developmental delay with or without congenital anomalies. However, the classification and interpretation of CMA still remained a challenge. Further research is needed for evidence-based interpretation.

Influences of Hinge Region of a Systhetic Antimicrobial Peptide, Cecropin A(1-13)-Melittin(1-13) Hybrid on Antibiotic Activity

  • 신송엽;강주현;이동건;장소윤;서무열;김길룡;함경수
    • Bulletin of the Korean Chemical Society
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    • 제20권9호
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    • pp.1078-1084
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    • 1999
  • A synthetic cecropin A(1-13)-melittin(1-13) [CA-ME] hybrid peptide was known to be an antimicrobial peptide having strong antibacterial, antifungal and antitumor activity with minimal cytotoxic effect against human erythrocyte. Analogues were synthesized to investigate the influences of the flexible hinge region of CA-ME on the antibiotic activity. Antibiotic activity of the peptides was measured by the growth inhibition against bac-terial, fungal and tumor cells and vesicle-aggregating or disrupting activity. The deletion of Gln-Gly-Ile (P1) or Gly-Gln-Gly-Ile-Gly (P3) from CA-ME brought about a significant decrease on the antibiotic activities. In contrast, Gly-Ile-Gly deletion (P2) from CA-ME or Pro insertion (P5) instead of Gly-Gln-Gly-Ile-Gly of CA-ME retained antibiotic activity. This result indicated that the flexible hinge or β-bend structure provided by Gly-Gln-Gly-Ile-Gly, Gln-Gly, or Pro in the central region of the peptides is requisite for its effective antibiotic activity and may facilitate easily the hydrophobic C-terminal region of the peptide to penetrate the lipid bilayers of the target cell membrane. In contrast, P4 and P6 with Gly-Gln-Gly-Pro-Gly or Gly-Gln-Pro in the central region of the peptide caused a drastic reduction on the antibiotic activities. This result suggested that the con-secutive β-bend structure provided by Gly-Gln-Gly-Pro-Gly or Gly-Gln-Pro in the central hinge region of the peptide seems to interrupt the ion channel/pore formation on the target cell membranes.

Multicopy Streptomyces 플라스미드 pJY711의 재조합 유도체의 특성 (Characterization of Recombinant Derivatives of pJY711 of Multicopy Streptomyces Plasmid)

  • 염도영;공인수;유주현
    • 미생물학회지
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    • 제28권1호
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    • pp.35-40
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    • 1990
  • Thiostrepton 내성 유전자(tsr)를 포함하는 multi-copy 재조합 플라스미드 pJY7J2의 제한효소 절단지도를 작성하였다. pJY, 712는 Streptomyces에서 넓은 host range를 나타내었으며 cloning 목적에 사용할 수 있는 단일 BgtIl 제한효소 인식부위를 갖고 있었다. 플라스미드 pJY 712는 lethal zygosis(Ltz+) 현상을 보였다. pJY 712의 혁질전환빈도는 S. lividans에서 $5.0\times 10^{4}$ TFU였다. pJY 712의 Bell 제한효소 인식부위에 tyrosmase 유전자(mel)를 삽입하여 플라스미드 PJY713을 제조하였다. met 유전자를 포함한 재조합 플라스미드 pJY 714는 pJY 713의 일부분(1.9kb BgllI-BelI 단편)을 제거하여 제고하였다.

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Functional Analysis of Pepper Cys2/His-Type Zinc-Finger Protein Promoter Region in Response to Bacterial Infection and Abiotic Stresses in Tobacco Using Agrobacterium-Mediated Transient Assay

  • Kim, Sang-Hee;Hwang, Byung-Kook
    • The Plant Pathology Journal
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    • 제21권1호
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    • pp.39-46
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    • 2005
  • The promoter region flanking the 5’ CAZFP1 coding region was isolated from the genomic DNA of Capsicum annuum. To identify the upstream region of the CAZFP1 gene required for promoter activity, a series of CAZFP1 promoter deletion derivatives was created. Each deletion construct was analyzed by Agrobacterium-mediated transient transformation in tobacco leaves after infection by Pseudomonas syringae pv. tabaci, or treatment with methyl jasmonate (MeJA), ethylene, abscisic acid (ABA), salicylic acid (SA), cold and wounding. Promoter fragments of 685 bp or longer showed 7-fold or greater induction after P. s. pv. tabaci infection and MeJA treatment. The CAZFP1 full-length promoter (-999 bp) also showed 6-fold induction in response to ethylene. The transiently transformed tobacco leaves with the CAZFP1 full length promoter fused-GUS gene showed more than 5-fold induction in response to SA, ABA and cold. These results suggest that the CAZFP1 promoter contains responsive elements for pathogen, MeJA, ethylene, SA, ABA and cold.

Genetic defects in the nef gene are associated with Korean Red Ginseng intake: monitoring of nef sequence polymorphisms over 20 years

  • Cho, Young-Keol;Kim, Jung-Eun;Woo, Jun-Hee
    • Journal of Ginseng Research
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    • 제41권2호
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    • pp.144-150
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    • 2017
  • Background: The presence of gross deletions in the human immunodeficiency virus nef gene ($g{\Delta}nef$) is associated with long-term nonprogression of infected patients. Here, we investigated how quickly genetic defects in the nef gene are associated with Korean Red Ginseng (KRG) intakein 10 long-term slow progressors. Methods: This study was divided into three phases over a 20-yr period; baseline, KRG intake alone, and KRG plus highly active antiretroviral therapy (ART). nef gene amplicons were obtained using reverse transcription polymerase chain reaction (PCR) and nested PCR from 10 long-term slow progressors (n = 1,396), and nested PCR from 36 control patients (n = 198), and 28 ART patients (n = 157), and these were then sequenced. The proportion of $g{\Delta}nef$, premature stop codons, and not in-frame insertion or deletion of a nucleotide was compared between three phases, control, and ART patients. Results: The proportion of defective nef genes was significantly higher in on-KRG patients (15.6%) than in baseline (5.7%), control (5.6%), on-KRG plus ART phase (7.8%), and on-ART patients (6.6%; p < 0.01). Small in-frame deletions or insertions were significantly more frequent among patients treated with KRG alone compared with controls (p < 0.01). Significantly fewer instances of genetic defects were detected in samples taken during the KRG plus ART phase (7.8%; p < 0.01). The earliest defects detected were $g{\Delta}nef$ and small in-frame deletions after 7 mo and 67 mo of KRG intake, respectively. Conclusion: KRG treatment might induce genetic defects in the nef gene. This report provides new insight into the importance of genetic defects in the pathogenesis of AIDS.

Neurofibromatosis type 1: a single center's experience in Korea

  • Kim, Min Jeong;Cheon, Chong Kun
    • Clinical and Experimental Pediatrics
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    • 제57권9호
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    • pp.410-415
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    • 2014
  • Purpose: Neurofibromatosis 1 (NF1) is an autosomal dominant condition caused by an NF1 gene mutation. NF1 is also a multisystem disorder that primarily affects the skin and nervous system. The goal of this study was to delineate the phenotypic characterization and assess the NF1 mutational spectrum in patients with NF1. Methods: A total of 42 patients, 14 females and 28 males, were enrolled in this study. Clinical manifestations and results of the genetic study were retrospectively reviewed. Results: Age of the patients at the time of NF1 diagnosis was $15.8{\pm}14.6$ years (range, 1-62 years). Twelve patients (28.6%) had a family history of NF1. Among the 42 patients, $Caf\acute{e}$-au-lait spots were shown in 42 (100%), neurofibroma in 31 (73.8%), freckling in 22 (52.4%), and Lisch nodules in seven (16.7%). The most common abnormal finding in the brain was hamartoma (20%). Mental retardation was observed in five patients (11.9%), seizures in one patient (2.4%), and plexiform neurofibromas (PNFs) in four patients (9.5%). One patient with PNFs died due to a malignant peripheral nerve sheath tumor in the chest cavity. Genetic analysis of seven patients identified six single base substitutions (three missense and three nonsense) and one small deletion. Among these mutations, five (71.4%) were novel (two missense mutations: p.Leu1773Pro, p.His1170Leu; two nonsense mutations: $p.Arg2517^*$, $p.Cys2371^*$; one small deletion: $p.Leu1944Phefs^*6$). Conclusion: The clinical characteristics of 42 Korean patients with NF1 were extremely variable and the mutations of the NF1 gene were genetically heterogeneous with a high mutation-detection rate.