• Allergy, Asthma & Immunology Research
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• 제10권6호
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• pp.675-685
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• 2018

Purpose: This study aims to determine the efficacy and safety of house dust mite (HDM)-sublingual immunotherapy (SLIT) in elderly patients with AR. Methods: A total of 45 patients aged ${\geq}60years$ with HDM-induced AR who had ${\geq}3$ A/H ratio on skin prick test and/or ${\geq}0.35IU/L$ to both Dermatophagoides farinae and Dermatophagoides pteronyssinus by ImmunoCAP were enrolled in 4 university hospitals. To evaluate additional effects of HDM-SLIT, they were randomized to the SLIT-treated group (n = 30) or control group (n = 15). Rhinoconjunctivitis total symptom score (RTSS), rhinoscopy score, Korean rhinoconjunctivitis quality of life questionnaire, rhinitis control assessment test, asthma control test scores, and adverse reactions, were assessed at the first visit (V1) and after 1 year of treatment (V5); for immunological evaluation, serum levels of HDM-specific immunoglobulin A/IgE/IgG1/IgG4 antibodies and basophil response to HDMs were compared between V1 and V5 in both groups. Results: There were no significant differences in demographics, RTSS, skin reactivity to HDMs, or serum total/specific IgE levels to HDMs (P > 0.05, respectively) between the 2 groups. Nasal symptom score and RTSS decreased significantly at year 1 in the 2 groups (P < 0.05). There were no significant differences in percent decrease in nasal symptom score and RTSS at year 1 between the 2 groups (P > 0.05); however, rhinoscopic nasal symptom score decreased significantly in the SLIT-treated group (P < 0.05). Immunological studies showed that serum specific IgA levels (not specific IgE/IgG) and CD203c expression on basophils decreased significantly at V5 in the SLIT-treated group (P = 0.011 and P = 0.001, respectively), not in the control group. The control group required more medications compared to the treatment group, but there were no differences in adverse reactions. Conclusions: It is suggested that HDM-SLIT for 1 year could induce symptom improvement and may induce immunomodulation in elderly rhinitis patients.

• 한국미생물·생명공학회지
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• 제26권2호
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• pp.161-166
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• 1998

AcNPV에 대해 감수성을 보이는 파밤나방 세포주인 Se301 세포주의 AcNPV를 이용한 발현 벡터계에서의 유용성을 알아보기 위하여 Se301세포주에서 AcNPV의 감염 특성을 Sf-21 세포주에서와 비교하였다. 그 결과, 바이러스의 감염상은 두 세포주에서 거의 유사하였으나 감염 7일 후에 세포로부터 방출된 다각체의 비율은 Se301 세포주에서 훨씬 높았다. 또한 전체 다각체 생성율은 Se301 세포주에서 약간 높았지만 그 차이는 매우 근소하여 대체적으로 두 세포주에서 거의 비슷하였으나 생성된 다각체의 크기는 Se301세포주에서 더욱 컸다. 한편, 세포주나 바이러스의 증식율과는 무관하게 AcNPV에 의한 다각체 단백질의 발현량이 Se301 세포주에서 약 2.4배 높게 나타남으로써 Se301 세포주가 AcNPV를 이용한 발현 벡터계에서 숙주 세포로서 매우 유용하게 이용될 수 있음을 보여 주었다.

• Experimental and Molecular Medicine
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• 제51권2호
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• pp.9.1-9.10
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• 2019

Mesangial cell proliferation has been identified as a major factor contributing to glomerulosclerosis, which is a typical symptom of diabetic nephropathy (DN). Lysophosphatidic acid (LPA) levels are increased in the glomerulus of the kidney in diabetic mice. LPA is a critical regulator that induces mesangial cell proliferation; however, its effect and molecular mechanisms remain unknown. The proportion of ${\alpha}-SMA^+/PCNA^+$ cells was increased in the kidney cortex of db/db mice compared with control mice. Treatment with LPA concomitantly increased the proliferation of mouse mesangial cells (SV40 MES13) and the expression of cyclin D1 and CDK4. On the other hand, the expression of $p27^{Kip1}$ was decreased. The expression of $Kr{\ddot{u}}ppel$-like factor 5 (KLF5) was upregulated in the kidney cortex of db/db mice and LPA-treated SV40 MES13 cells. RNAi-mediated silencing of KLF5 reversed these effects and inhibited the proliferation of LPA-treated cells. Mitogen-activated protein kinases (MAPKs) were activated, and the expression of early growth response 1 (Egr1) was subsequently increased in LPA-treated SV40 MES13 cells and the kidney cortex of db/db mice. Moreover, LPA significantly increased the activity of the Ras-related C3 botulinum toxin substrate (Rac1) GTPase in SV40 MES13 cells, and the dominant-negative form of Rac1 partially inhibited the phosphorylation of p38 and upregulation of Egr1 and KLF5 induced by LPA. LPA-induced hyperproliferation was attenuated by the inhibition of Rac1 activity. Based on these results, the Rac1/MAPK/KLF5 signaling pathway was one of the mechanisms by which LPA induced mesangial cell proliferation in DN models.

• Rapid Communication in Photoscience
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• 제3권2호
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• pp.28-31
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• 2014

Loss of chlorophyll is the visible symptom of leaf senescence and staygreen refers to the delayed leaf senescence in plants. The staygreen gene (SGR) in rice (Oryza sativa L.) has been identified as its mutation maintains greenness during leaf senescence, and encodes a chloroplast protein required for the initiation of chlorophyll breakdown in plants. In this study, we isolated a rice SGR-homologous gene in creeping bentgrass (Agrostis stolonifera L.), and transgenic creeping bentgrass plants were obtained by introducing pCAMBIA3301 vector harboring antisense SGR gene under control of the senescence-specific SAG12 promoter. Transgenic plants were selected by herbicide resistance assays and genomic integration of the transgenes was confirmed by PCR analysis. Subsequent analyses demonstrated the staygreen phenotype of the transgenic creeping bentgrass plants with decreased chlorophyll loss during leaf senescence. These results suggest that the antisense SGR expression in creeping bentgrass delays leaf senescence, which provides a way to develop genetically engineered turfgrass varieties with the commercially useful staygreen trait.

• 동의생리병리학회지
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• 제29권1호
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• pp.51-57
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• 2015

Bone destruction is a pathological symptom of some chronic inflammatory diseases, such as rheumatoid arthritis and periodontitis. Inflammation-induced bone loss of these diseases results from increased number and activity of osteoclasts. Paeoniae Radix Alba has been used in korean traditional medicine to treat disease including inflammation, gynecopathy and various pain. However, these effects have not been tested on osteoclasts, the bone resorbing cells that regulate bone metabolism. Here, we investigated the effects of Paeoniae Radix Alba ethanol extract (PRAE) on receptor activator of nuclear factor-kappa B ligand (RANKL)-mediated osteoclast differentiation and formation. Osteoclast differentiation and formation were measured by tartrate resistant acidic phosphatase (TRAP) staining and TRAP solution assay. The treatment of PRAE on bone marrow derived macrophages (BMMs), which is known as osteoclast precursor cells, inhibited osteoclast differentiation and formation in a dose-dependent manner. In addition, the expression of osteoclast differentiation marker genes was suppressed by PRAE treatment. This inhibitory effect of PRAE resulted from significant repression of c-Fos expression, and subsequent reduction of NFATc1 expression which was previously reported as a master transcription factor for osteoclastogenesis in vitro and in vivo. These results demonstrate that PRAE negatively regulates osteoclast differentiation and formation and suggest that PRAE can be used as a potent preventive or therapeutic candidate for various bone diseases, such as postmenopausal osteoporosis, periodontitis and rheumatoid arthritis.

• 한국연초학회지
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• 제19권2호
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• pp.117-123
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• 1997

Viral coat protein (CP) encoding cDNA with artificial start and stop codons was synthesized by reverse-transcriptase polymerase chain reaction (RT-PCR) from the Korean isolate of potato virus Y-vein nectrosis strain (pVY-VN). To make PVY CP cDNA to untranslatable form, three stop codons were inserted near the start codon by "megaprimer-PCR" method. The untranslatable CP cDNA was subcloned to plant expression vector and transferred to N. tabacum cv. NC82 by Agrobacterium-mediated transformation. Highly resistant plants to PVY infection were screened, based on symptom development after mechanical virus inoculation. By genomic PCR and Southern blot analysis, one or more copies of the untranslatable CP gene were found in all transformants. From northern blot analysis, highly resistant transgenic lines had very low level of CP transcript but susceptible lines had high level, suggesting resistance to PVY infection should be related to RNA-mediated mechanism.mechanism.

• 정신신체의학
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• 제12권1호
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• pp.30-37
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• 2004

연구목적: 본 연구는 만성표재성 위염 환자들과 위궤양 환자들을 대상으로 두 환자군 간의 스트레스반응, 분노표현, 감정표현불능증을 비교하기 위해 시행되었다. 방 법: 대상은 소화기내과에 내원한 후 위내시경을 시행하여 만성표재성위염으로 확인된 환자 100명과 위궤양으로 확인된 환자 40명으로 구성되었다. 스트레스반응은 스트레스반응척도 및 Symptom Checklist-90-revised의 불안, 우울, 신체화, 적대감 하위척도에 의해, 분노표현은 분노표현척도에 의해, 감정표현불능증은 Toronto Alexithymia Scale에 의해 각각 평가되었다. 결 과: 만성위염 환자들이 위궤양 환자들보다 스트레스반응척도의 긴장 하위척도 및 신체화 하위척도 점수와 SCL-90-R의 불안 하위척도 점수가 각각 유의하게 더 높았다. 그러나 분노표현 하위척도 및 분노억제 하위척도 점수와 감정표현불능증 전체점수는 2군 간에 각각 유의한 차이를 보이지 않았다. 스트레스반응척도의 신체화 하위척도 점수는 만성위염 환자들에서 여자가 남자보다, 위궤양 환자들에서는 남자가 여자보다 각각 유의하게 더 높았다. 결 론: 이상의 결과들은 만성위염 환자들이 위궤양 환자들에 비해 스트레스반응이 더 현저하고 스트레스에 대한 취약성이 더 높을 가능성을 시사해 준다. 그리고 만성위염 환자들은 여자들에서, 위궤양 환자들은 남자들에서 신체화 경향이 더 높음을 시사한다. 그러나 두 군 간에 분노표현 및 분노억압, 감정표현불능증은 차이를 보이지 않았다.

• 대한한의학회지
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• 제22권1호
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• pp.63-77
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• 2001

Objectives : In acute stage of CVA, many patients experience Bugibultong as a symptom. Daesiho-tang is one of the most useful prescriptions for constipated stroke patients. This study investigated the effects of Daesiho-tang extracts on hypoxic E18 cortical neuroblast. Methods : To evaluate the effect of Daesiho-tang extracts on enuronal death caused by hypocia the neuronal viability and protein expressions of NMDA receptor subunits, ${\alpha}CaMK$ II PDE2 PSD95 densin-180, $eEF-l{\alpha}$ and GFAP were investigated. Results : We guessed that Daesiho-tang extracts worked to protect against cell damage through effecting on the protein expression of PSD(post synatpic density), especially increase of ${\alpha}CaMK$ II, $eEF-l{\alpha}$ PDE2, PSD95 and densin-180 Conclusions : According to the above results, it is supposed that Daesiho-tang is clinically applicable to stroke patients in the acute stage.

• 한국균학회지
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• 제25권3호통권82호
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• pp.191-201
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• 1997

유전자의 삽입에 의해 발생하는 C. parasitica의 돌연변이체중 mycovirus에 감염된 것과 같이 색소와 포자를 적게 형성하는 균주(HSM1)를 선발하였다. 선발된 균주는 형태학적 병징외에도 laccase효소의 역가와 같은 생화학적 그리고 표지 유전자들을 통해 분자 생물학적인 특징도 virus에 감염된 균주와 동일한 특징을 나타냈다. HSM1에서 돌연변이가 일어날 부위를 cloning하여 조사한 결과, 유전자 삽입 부위는 C. parasitica의 두 유전자(Cpg2와Cpg3)의 사이(intergenic space)이며 유전자의 삽입 결과, HSM1에서 Cpg2의 발현이 오히려 증가됨이 관찰되었고, 나아가 이와 같은 현상은 mycovirus 감염 균주(UEP1)에서도 일어나고 있음을 확인하였다.

• 한국식품영양학회지
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• 제34권2호
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• pp.146-155
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• 2021

This study observed the anti-inflammatory effect of the polysaccharide derived from the mycelium of Tremella fuciformis in mice with colitis induced with dextran sulfate sodium (DSS). The experimental groups were normal, DSS, DSS-TFL50, DSS-TFH100, and suflasalazine. Body weights, colon lengths, and organ weights were measured, and the plasma level of pro-inflammatory cytokine and mRNA and protein expression in colon tissue were analyzed. Body weight loss, a symptom of DSS-induced colitis, was suppressed by DSS-TF and the speed of weight recovery proceeded rapidly. In addition, DSS-TF showed a significant inhibitory effect on the decrease of colon length typically caused by colon damage. TNF-α, IL-6 and IL-1β cytokine levels in plasma were reduced in DSS-TF and positive control groups. TNF-α, COX-2 and IL-1β mRNA expression in colon tissue were inhibited in DSS-TF and positive control, and it was significantly different from that of the DSS group. The protein expression of inflammation-related genes (IL-6, TNF-α and COX-2) in the colon tissue was significantly increased by DSS compared to that of the normal group, but by DSS-TFL50, DSS-TFH100 and sulfasalarin decreased. In conclusion, the polysaccharide derived from the mycelium of Tremella fuciformis showed the anti-inflammatory effect on DSS-induced colitis in mice.