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Progastrin-releasing peptide as a diagnostic and therapeutic biomarker of small cell lung cancer
오형주,( Ha Young Park ),( Tae Ok Kim1 ),( Chul Kyu Park ),( Hong Jun Shin ),( Hee Jung Ban ),( In Jae Oh ),( Yong Soo Kwon ),( Yu Il Kim ),( Sung Chul Lim ),( Young Chul Kim ),( Soo Hyun Kim ),( Myung G 대한결핵 및 호흡기학회 2015 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.120 No.-
Background: Progastrin-releasing peptide (proGRP) is a recently identified biomarker of small cell lung cancer (SCLC). We aimed this study for evaluating the usefulness of automated proGRP measurement for diagnosis and treatment monitoring in patients with SCLC. Methods: From January 2011 to December 2013, plasma samples were prospectively collected from 452 [213 non-small cell lung cancer (NSCLC), 104 SCLC, 135 other diseases] patients visited for tissue diagnosis and tested by two-step automated immunoassay using the ARCHITECT proGRP assay kit (Abbott Diagnostics, USA). The cutoff level of proGRP was set at 63 pg/mL. Results: The mean proGRP was higher in SCLC (1823.0 ± 2684.0 pg/mL) than in NSCLC (61.0 ± 341.7 pg/mL) and other diseases (51.5 ± 222.6 pg/mL, p<0.001). The sensitivity of proGRP was 85.7% (90/105) in SCLC and 11.8% (25/212) in NSCLC. The specificity was 90.2%, positive predictive value was 72.5%, and negative predictive value was 95.4% in SCLC. The mean proGRP was higher in extensive disease (2158.1 ± 2980.6 pg/mL) than in limited disease (901.4 ± 1216.0 pg/mL, p=0.033). Among the 39 patients with SCLC could be followed, the mean proGRP levels of 23 responders were significantly decreased after chemotherapy (from 1651.5 ± 1386.4 pg/mL to 290.0 ± 524.8 pg/mL, p<0.001), whereas those of the 16 non-responders were not. (from 572.5 ± 790.3 pg/mL to 494.4 ± 610.9 pg/mL, p=0.583). Conclusion: Plasma proGRP could be a useful biomarker of SCLC for diagnosis and treatment monitoring. And the initial level may represent the tumor extent of SCLC.
Seo, Ju-Hee,Leem, Jong-Han,Ha, Eun-Hee,Kim, Ok-Jin,Kim, Byung-Mi,Lee, Ji-Young,Park, Hye-Sook,Kim, Hwan-Cheol,Hong, Yun-Chul,Kim, Young-Ju Blackwell Publishing Ltd 2010 Paediatric and perinatal epidemiology Vol.24 No.2
<P>Summary</P><P>Seo J-H, Leem J-H, Ha E-H, Kim O-J, Kim B-M, Lee J-Y, Park H-S, Kim H-C, Hong Y-C, Kim Y-J. Population-attributable risk of low birthweight related to PM<SUB>10</SUB> pollution in seven Korean cities. <I>Paediatric and Perinatal Epidemiology</I> 2010; <B>24:</B> 140–148.</P><P>To understand the preventable fraction of low birthweight (LBW) deliveries due to maternal exposure to air pollution during pregnancy in Korea, it is important to quantify the population-attributable risk (PAR). Thus, we investigated the association between maternal exposure to air pollution during pregnancy and LBW, and calculated the PAR for air pollution and LBW in seven Korean cities. We used birth records from the Korean National Birth Register for 2004. A geographic information system and kriging methods were used to construct exposure models. Associations between air pollution and LBW were evaluated using univariable and multivariable logistic regression, and the PAR for LBW due to air pollution was calculated.</P><P>Of 177 660 full-term singleton births, 1.4% were LBW. When only spatial variation of air pollution was considered in each city, the adjusted odds ratios unit of particulate matter <10 µm in diameter (PM<SUB>10</SUB>) for LBW were 1.08 [95% confidence interval [CI] 0.99, 1.18] in Seoul, 1.24 [95% CI 1.02, 1.52] in Pusan, 1.19 [95% CI 1.04, 1.37] in Daegu, 1.12 [95% CI 0.98, 1.28] in Incheon, 1.22 [95% CI 0.98, 1.52] in Kwangju, 1.05 [95% CI 1.00, 1.11] in Daejeon and 1.19 [95% CI 1.03, 1.38] in Ulsan.</P><P>The PARs for LBW attributable to maternal PM<SUB>10</SUB> exposure during pregnancy were 7%, 19%, 16%, 11%, 18%, 5% and 16% respectively. Because a large proportion of pregnant women in Korea are exposed to PM<SUB>10</SUB>– which is associated with LBW – a substantial proportion of LBW could be prevented in Korea if air pollution was reduced.</P>
An Anticoagulant / Fibrinolytic Protease from Lumbricus rubellus
Kim, Doo Sik,Jeon, Ok Hee,Moon, Woong Joon 생화학분자생물학회 1977 BMB Reports Vol.28 No.2
An anticoagulant/fibrinolytic protease was purified to homogeneity from the earthworm Lumbricus rubellus. The protein was a single chain glycoprotein of 32 kDa that exhibited strong proteolytic activity on human thrombin and fibrin clots. Proteolytic degradation of these plasma proteins by the purified enzyme occurred at a neutral pH range. Among several human plasma proteins tested as possible substrates for the protease reaction, the 32 kDa enzyme specifically hydrolyzed both thrombin and fibrin polymers without affecting other proteins, such as serum albumin, immunoglobulin, and hemoglobin. Treatment of the purified enzyme at neutral pH with either phenylmethylsulfonylfluoride or soybean trypsin inhibitor resulted in a loss of catalytic activity. The enzyme hydrolyzed the chromogenic substrate H-D-Phe-L-Rpecolyl-L-Arg-pnitroanilide with a Km value of 1.1 pM at a neutral pH. These results suggest that the anticoagulant/fibrinolytic enzyme from Lumbricus rubellus is a member of the serine protease family having a trypsin-like active site, and one of the potential clevage sites for the enzyme is the carbonyl side of arginine residues in polypeptide chains.
Kim, Byung-Ki,Kang, Sung-Ryoung,Yim, Cha-Ok,Han, Chang-Hee,Lee, Bok-Kyu,Lee, Kwang-Sun Korean Society of Life Science 2003 생명과학회지 Vol.13 No.5
본 연구는 난구세포가 제거된 돼지 미성숙 난자와 포유동물 정자의 공배양이 체외핵성숙에 미치는 영향을 조사하기 위하여 실시하였다. 난구세포가 부착된 미성숙난자를 직경 3-5 mm난포로부터 채취하여 난구세포를 제거한 후 정자가 첨가된 tissue culture medium 199에서 배양하였다. 배양 후 48시간에 난자의 핵성숙을 핵막붕괴, 제일차 감수분열 중기, 제일차 감수분열 후기-말기, 제이차감수분열 중기로 판정하였다. 배양 후 제이차감수분열 중기로 성숙한 난자의 비율이 무첨가구에 비하여 정자가 첨가된 배양액에서 성숙시킨 미성숙난자에서 유의적인(P<0.01) 증가가 있었다$(31.9\pm1.8%\; vs\; 14.9\pm1.0%)$. 난자의 성숙 단계에 따른 정자의 노출시간과 정자가 유래한 종에 따라서는 차이가 없었다. 그러나 정자의 첨가농도에 따라 유의적인 차이가 인정되었다. 본 연구는 포유동물의 정자는 미성숙난자의 체외성숙을 촉진하는 물질을 갖고 있으며, 촉진 효과는 농도에 의존하는 것으로 암시하고 있다. The purpose of this study was to determine if the addition of spermatozoa into the culture medium could influence the nuclear maturation of denuded porcine germinal vesicle (GV) oocytes in vitro. Cumulus-oocyte complexes were collected from follicles of 3 to 5 mm in diameter, The cumulus and corona cells were removed from oocytes. Porcine denuded oocytes were cultured in tissue culture medium containing spermatozoa. After 48 h culture, oocytes were examined for the evidence of GV breakdown, metaphase I, anaphase-telophase I, and metaphase II (M II). The proportion of oocytes reaching M II stage was significantly (P<0.01) increased in the oocytes cultured in media containing spermatozoa compared to those in media without spermatozoa $(31.9\pm1.8%\; vs\; 14.9\pm1.0%)$.No differences in the rates of M II were observed among the different period of spermatozoa exposure nor among the spermatozoa from different species. The proportion of oocytes reaching M II stage was significantly different between high and low concentrations of spermatozoa. The present study suggests that mammalian spermatozoa contain a substance(s) that improves nuclear maturation in vitro of GV oocytes. Enhancing effect of spermatozoa for oocytes maturation in vitro is a highly dose-dependent.
RANKL stimulates proliferation, adhesion and IL-7 expression of thymic epithelial cells
Hee-Woo Lee,Hye Kyung Park,Yong Jin Na,Chi Dae Kim,Jung Hoon Lee,Bong Seon Kim,Jae Bong Kim,Choong Won Lee,Jeon Ok Moon,Sik Yoon 생화학분자생물학회 2008 Experimental and molecular medicine Vol.40 No.1
In many clinical situations which cause thymic in- volution and thereby result in immune deficiency,T cells are the most often affected,leading to a prolonged deficiency of T cells.Since only the thymic-dependent T cell production pathway secures stable regeneration of fully mature T cells,seeking strategies to enhance thymic regeneration should be a key step in developing therapeutic methods for the treatment of these sig- nificant clinical problems.This study clearly shows that receptor activator of NF-κB ligand (RANKL) stim- ulates mouse thymic epithelial cell activities including cell proliferation,thymocyte adhesion to thymic epi-thelial cells, and the expression of cell death regulatory genes favoring cell survival, cell adhesion molecules such as ICAM-1 and VCAM-1, and thymopoietic factors including IL-7. Importantly, RANKL exhibited a sig- nificant capability to facilitate thymic regeneration in mice.In addition,this study demonstrates that RANKL acts directly on the thymus to activate thymus re- generation regardless of its potential influences on thymic regeneration through an indirect or systemic effect.In light of this,the present study provides a greater insight into the development of novel ther- apeutic strategies for effective thymus repopulation using RANKL in the design of therapies for many clin- ical conditions in which immune reconstitution is required. In many clinical situations which cause thymic in- volution and thereby result in immune deficiency,T cells are the most often affected,leading to a prolonged deficiency of T cells.Since only the thymic-dependent T cell production pathway secures stable regeneration of fully mature T cells,seeking strategies to enhance thymic regeneration should be a key step in developing therapeutic methods for the treatment of these sig- nificant clinical problems.This study clearly shows that receptor activator of NF-κB ligand (RANKL) stim- ulates mouse thymic epithelial cell activities including cell proliferation,thymocyte adhesion to thymic epi-thelial cells, and the expression of cell death regulatory genes favoring cell survival, cell adhesion molecules such as ICAM-1 and VCAM-1, and thymopoietic factors including IL-7. Importantly, RANKL exhibited a sig- nificant capability to facilitate thymic regeneration in mice.In addition,this study demonstrates that RANKL acts directly on the thymus to activate thymus re- generation regardless of its potential influences on thymic regeneration through an indirect or systemic effect.In light of this,the present study provides a greater insight into the development of novel ther- apeutic strategies for effective thymus repopulation using RANKL in the design of therapies for many clin- ical conditions in which immune reconstitution is required.
Kim, Jin-Hwa,Ok, Soo-Min,Heo, Jun-Young,Kim, Kyung-Hee,Jeong, Sung-Hee,Ahn, Yong-Woo,Ko, Myung-Yun Korean Academy of Orofacial Pain and Oral Medicine 2014 Journal of Oral Medicine and Pain Vol.39 No.1
Purpose: The purpose of this study was to compare the clinical and radiographic features of temporomandibular joint (TMJ) osteoarthritis (OA) between adolescents and middle-old aged patients. Methods: The subjects were chosen among the patients who presented to the Department of Oral Medicine of Pusan National University Hospital and were diagnosed with TMJ OA by clinical exam, X-ray and cone-beam computed tomography (CBCT) from 2010 to 2011. We investigated 93 adolescent patients (12-19 years) and 53 middle-old aged (>45 years) patients who observed the erosive bony changes in TMJ. CBCT scans were retaken at intervals at an average of 8 months. Results: The adolescent patients showed unilateral degenerative changes more often, and the middle-old aged patients showed degenerative changes more frequently on both sides. The transition of bone changes to the improved group occurred most commonly in both the adolescent and middle-old aged patients. The adolescent patients were more likely to improve than middle-old aged patients. In the adolescent patients, loss of erosion and subjective symptoms occurred in shorter periods than in the middle-old aged patients. In the adolescent patients, the transition of erosion was distributed into proliferative, normal, and shortening in order. In the middle-old aged patients, the transition of erosion was distributed into shortening, proliferative, and normal in order. Conclusions: The clinical and radiographic features of TMJ OA are a significantly different between the adolescent and middle-old aged patients. Moreover, the difference by age of the adaptive and regenerative capacity of TMJ affects the prognosis of TMJ OA and adolescent patients have a better prognosis after treatment.