• Maxillofacial Plastic and Reconstructive Surgery
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• 제29권6호
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• pp.474-484
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• 2007

Purpose: The effect of platelet-rich plasma(PRP) on osteogenesis of marrow-derived osteoblasts on histomorphometric analysis in the mandible of rabbit was assessed. Materials and Method: Bone marrow cells were obtained from iliac bone of rabbits and were cultured in a Dulbecco's Modified Eagle's Medium(DMEM) with Dexamethasone, L-Ascortic acid, ${\beta}$-Glycerophosphate to proliferate and differentiate into osteoblasts for $4{\sim}5$ weeks. The expression of osteogenic mar-kers was detected by reverse transcription-polymerase chain reaction(RT-PCR) and silver nitrate stain. Then we prepared bony defects in the mandible of rabbit, 10.0mm in diameter and 4.0mm deep, by trephine bur. In the control group, the defects were filled with autogenous bone and cultured osteoblasts. In the experimental group, the defects were filled with autogenous bone, cultured osteoblasts and PRP. 2 weeks, 4 weeks, 8 weeks later, each group was evaluated with histological and histomorphometric analyses. Results: In vitro, osteoblasts were identified on RT-PCR and silver nitrate stain. According to histological observation, at 2 weeks well-developed anasto-mosing newly-formed woven bone was observed, at 4 weeks anastomosing newly-formed woven bone having osteoblastic activation was observed, and at 8 weeks thick newly-formed woven bone was observed in both control and experimental groups. According to histomorphometric analysis, there were 1.5% more newly-formed bone volume in experimental group than control group at 2 weeks, 28.4% more at 4 weeks, 4.3% more at 8 weeks. Particularly there were significant differences in bone volume at 4 weeks and 8 weeks new bone. Conclusion: Our results demonstrated PRP may enhance osteogenesis of marrow-derived osteoblasts at 4 weeks, 8 weeks.

• 한방재활의학과학회지
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• 제25권4호
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• pp.1-20
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• 2015

Objectives This study was intended to clarify the anti-inflammation and anti-oxidation effects of gamikyejakjimo-tang herbal acupuncture (GKHA) for osteoarthritis. Methods Osteoarthritis was induced by injection of MIA into right knee joint cavities of rats. Rats were divided into a total of 4 groups (n=8). The 4 groups were normal group, control group, positive comparison group and expeimental group. Indomethacin and GKHA were medicated for a total of 4 weeks. After that, functions of liver and kidney by AST, ALT, creatinine, BUN, DPPH and ABTS free radical scavenging activity, ROS (reactive oxygen species) production, NO (Total Nitric oxide), IL-$1{\beta}$, IL-6, TNF-${\alpha}$ production, weight changes in the hind legs of MIA-induced osteoarthritis rat, serum PGE2, TIMP-1, MMP-2, MMP-9, LTB4, hs-CRP, and white blood cells, neutrophils, lymphocytes, monocytes were measured. The volume of cartilage was observed by micro CT arthrography. H&E and Safranin-O staining were used to examine the injury of synovial tissue. Results 1. In the hind leg weight bearing measurement, level of weight was increased. 2. AST, ALT, BUN, creatinine were decreased. 3. The production of total white blood cell was decreased, and the production of neutrophils, lymphocytes, monocytes were significantly decreased. 4. The production of NO, PGE2, TIMP-1, MMP-2, MMP-9, LTB4 were significantly decreased, and the production of hs-CRP was also decreased but with no significance. 5. The cartilage volume was significantly increased. 6. In H&E staining and Safranin-O staning, the cartilage cell appeared to be proliferated, and proteoglycans appeared to be increased. Conclusions Based on the results above, Gamikyejakjimo-tang Herbal Acupuncture has anti-oxidation and anti-inflammation effects, which leads to suppressing the underlying causes and the progression of osteoarthritis.

• Journal of Periodontal and Implant Science
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• 제26권2호
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• pp.491-510
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• 1996

This study was performed to evaluate the effects of platelet-derived growth factor (PDGF) and epidermal growth factor (EGF) on the characteristics of beagle dog's periodontal ligament (BPD) cells and bone marrow (BBM) cells which have the important role on the early stage of periodontal tissue regeneration in vitro. In control group, the cells ($1.5{\times}10^5$cells/ml) were cultured alone with Dulbecco's Modified Eagle's Medium contained with 10% fetal bovine serum, $50{\mu]g/ml$ ascorbic acid, and 10mM/ml ${\beta}-glycerophosphate$. In experimental groups, growth factors, PDGF or EGF(10ng/ml), were added into the above culture condition. And then each group was characterized by examining the cell proliferation rate, amount of total protein synthesis, alkaline phosphatase activity at 1, 5, 9, 13, 17th day after seeding of cells into the culture wells. The results were as follows: 1. Both BPD and BBM cells in PDGF-treated group proliferated more rapidly than non-treated cells. This finding also was observed in EGF-treated group but it was not as prominent as that of PDGF-treated group. The proliferation rates of both cells showed the time-dependent pattern during experimental periods in all three groups. 2. Amount of total protein synthesis was more increased in PDGF-treated group than in control group. But no significant difference between EGF-treated group and control group was observed throughout experimental periods even though the tendency of amount of protein synthesis was time-dependent pattern. 3. Alkaline phosphatase activity also more increased in PDGF-treated group than control group. But slight decrease tendency was seen in both cells of EGF-treated group. From the above results, PDGF appeared to enhance the proliferation and cellular activities including amount of total protein synthesis and alkaline phosphatase activity of BPD and BBM cell, but EGF did not show notable effects. The optimal application of these growth factors was thought to be useful as the adjunctive means in periodontal regeneration procedures.

• 한국식품영양과학회지
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• 제46권10호
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• pp.1171-1177
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• 2017

보리 도정 시 발생되는 부산물(맥강)의 이용방안을 모색하기 위하여 5가지 품종의 쌀보리 보석찰(유색 찰성), 흰찰쌀(찰성), 다한(메성), 흑광(유색), 흑누리(유색)를 23%로 도정한 다음 입도별(<60 mesh(fraction I), 60~100 mesh(fraction II), >100 mesh(fraction III)로 분획 후, 기능성분 함량에 대해 분석하였다. 베타글루칸의 함량은 모든 품종에서 fraction II에서 가장 높게 나타났으며, 다한과 흑누리에서 높은 함량을 나타내었다. 아라비노자일란은 fraction III에서 가장 낮은 함량을 보여 입도가 큰 분획물을 이용하는 것이 아라비노자일란 고함유 분획물을 얻을 수 있었다. 총 폴리페놀 및 플라보노이드는 모든 품종에서 fraction II에서 가장 높은 함량을 나타내었으며, 항산화력과 라디칼 소거능 역시 fraction II에서 가장 좋은 활성을 나타내어 비슷한 경향을 나타내었다. 분석한 모든 기능성분의 함량이 높았던 fraction II는 보리의 겨층 부분과 배유층 부분이 적절히 혼입된 분획물로 판단되기 때문에 맥강의 기능성 식품 소재화를 위한 맥강을 선정할 때 fraction II를 활용하는 것이 좋을 것으로 판단되었다. 이러한 결과는 보리 도정 부산물의 효율적인 이용을 위하여 품종 및 입도별 분류를 통해 유용성분이 고함유되어 있는 층을 얻고, 이를 활용한 식품 기능소재로서의 가능성을 확인하였다.

• 한국식품영양과학회지
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• 제12권2호
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• pp.110-115
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• 1983

1. DPPH에 대한 전자공여능은 vitamin A와 D가 인삼사포닌 단독보다 높아 지용성 비타민 첨가에 의한 상승효과가 인정되었다. 2. 과산화지질 생성초기의 유도기간은 vitamin A, D를 첨가했을 때 대조군이나 인삼 사포닌보다 효과적으로 유도기간을 연장시킴을 알 수 있었다. 3. in vitro에서 과산화지질 생성억제작용을 TBA value로 조사한 결과 vitamin E>A>D의 순으로 지용성 비타민의 첨가효과가 인정되었다. 4. in vivo실험에서 인삼 사포닌 및 지용성 비타민 첨가 투여에 의한 rat의 체중 및 간장, 신장의 장기중량 변화는 지용성 비타민의 첨가가 체중증가에 효과적임을 알 수 있었고, 간장은 비타민 첨가군에서 다소 중량증가가 인정되었으나 신장의 중량변화에는 큰 유의성을 발견 할 수 없었다. 5. in vivo실험에서 인삼 사포닌 및 지용성 비타민 첨가 투여에 의한 rat의 혈액에서의 과산화지질 생성억제작용은 vitamin E>D>A의 순으로 나타났고, 간장에서는 vitamin A와 E첨가군에서 효과적임이 인정되었다.

• Journal of Ginseng Research
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• 제39권4호
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• pp.314-321
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• 2015

Background: Ginseng belongs to the genus Panax. Its main active ingredients are the ginsenosides. Interstitial cells of Cajal (ICCs) are the pacemaker cells of the gastrointestinal (GI) tract. To understand the effects of ginsenoside Re (GRe) on GI motility, the authors investigated its effects on the pacemaker activity of ICCs of the murine small intestine. Methods: Interstitial cells of Cajal were dissociated from mouse small intestines by enzymatic digestion. The whole-cell patch clamp configuration was used to record pacemaker potentials in cultured ICCs. Changes in cyclic guanosine monophosphate (cGMP) content induced by GRe were investigated. Results: Ginsenoside Re ($20-40{\mu}M$) decreased the amplitude and frequency of ICC pacemaker activity in a concentration-dependent manner. This action was blocked by guanosine 50-[${\beta}-thio$]diphosphate [a guanosine-5'-triphosphate (GTP)-binding protein inhibitor] and by glibenclamide [an adenosine triphosphate (ATP)-sensitive $K^{+}$ channel blocker]. To study the GRe-induced signaling pathway in ICCs, the effects of 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (a guanylate cyclase inhibitor) and RP-8-CPT-cGMPS (a protein kinase G inhibitor) were examined. Both inhibitors blocked the inhibitory effect of GRe on ICC pacemaker activity. L-NG-nitroarginine methyl ester ($100{\mu}M$), which is a nonselective nitric oxide synthase (NOS) inhibitor, blocked the effects of GRe on ICC pacemaker activity and GRe-stimulated cGMP production in ICCs. Conclusion: In cultured murine ICCs, GRe inhibits the pacemaker activity of ICCs via the ATP-sensitive potassium ($K^{+}$) channel and the cGMP/NO-dependent pathway. Ginsenoside Re may be a basis for developing novel spasmolytic agents to prevent or alleviate GI motility dysfunction.

• Journal of Periodontal and Implant Science
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• 제36권2호
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• pp.409-425
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• 2006

치주질환의 병원균은 세포벽의 항원에 의하여 조직내 존재하는 mononuclear phagocytes가 활성화되어 cytokine들이 생성됨 으로써 치주 결체조직의 파괴를 진행시킨다. 이런 관련된 cytokine들은 순차적으로 상주하는 치은세포 및 대식세포가 Matrix metalloproteinase 합성을 하도록 유도하여 조직파괴를 시작한다. 이들 Matrix metalloproteinase중 MMP-2, MMP-9 (Gelatinase A,B)는 type IV collagen 및 변성된 interstitial collagen을 파괴하며 치주환자의 치은 열구액, 치은조직, 타액 네에서 높게 보고 되어왔다. 당뇨병은 치주질환의 위험요소중 하나로 달뇨 환자에서는 치주질환의 유병율이 일반인에 비해 높고 치주질환의 중증도도 더 심하여 진행도 빠르다고 알려져 있다. 그 병리 기전 중 하나로는 당뇨 환자에서는 치은 열구액 내 중성구 유래의 Matrix metalloproteinase의 활성 증가 및$TNF-{\alpha}$ 의 활성 증가가 추정되고 있다. 본 실험에서는 제2형 당뇨병 환자와 비당뇨 환자들에서 만성 치주염 부위의 치은 및 건강한 치은에서 염증매개체 중 하나인 MMP-2, MMP-9 및 $TNF-{\alpha}$ 의 발현에 대해 상호 비교 분석함으로서 염증, 혈당이 미치는 영향을 밝히고 제 2형 당뇨병 환자에서 심한 치주조직 파괴의 기전을 연구하고자 하였다. 경북대학교병원 치주과 내원환자 중 제2형 당뇨병 환자와 비당뇨 환자들 및 치주질환이 없는 건강인 대조군을 대상으로 여러 가지 환자요소, 임상 치주상태를 기록하고, 전신적으로 건강한 환자의 건강한 부위(n=8,Group 1), 전신적으로 건강한 환자으 만성 치주염 부위(n=8, Group 2), 제2형 당뇨병 환자의 만성 치주염 부위 (n=8,Group 3)에서 각각 변연치은을 채득하고 액화질소에 급속 동결하였다. Western blotting을 이용하여 각 조직 내 MMP-2, MMP-9 및 $TNF-{\alpha}$ 의 발현을 관찰, densitometer를 이용하여 상대적 발현을 정량, 각 조직의${\beta}-actin$을 이용하여 표준화하여 실험군과 대조군들의 평균치를 비교하였다. 비당뇨 환자들의 만성 치주염 부위 및 제2형 당뇨병 환자의 만성 치주염 부위에서 모두 건강 대조군에 비해 MMP-2와 MMP-9 의 발현이 증가되었다. 또한 MMP-2와 MMP-9는 2형 당뇨 환자의 만성 치주염 부위가 비당뇨 환자의 만성 치주염 부위보다 증가된 발현양상을 보였으며, $TNF-{\alpha}$ 발현 비교시 각 군간 유의성 있는 변화는 없었으나 2형 당뇨환자군에서 MMP-2 및 MMP-9의 증가와 함께 다소 증가 양상을 보였다. 결론적으로 본 실험에서 MMP-2 및 MMP-9의 증가가 만성 치주염 및 2형 당뇨 환자에서의 만성치주염에서 비당뇨환자 보다 MMP-2, MMP-9의 증가양상을 보여 주었으며 $TNF-{\alpha}$ 가 2형 당뇨환자의 만성치주염 진행과정에 기여인자로써 역할을 하는 것으로 생각된다.

• Journal of Periodontal and Implant Science
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• 제50권1호
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• pp.14-27
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• 2020

Purpose: To overcome several drawbacks of chemically-crosslinked collagen membranes, modification processes such as ultraviolet (UV) crosslinking and the addition of biphasic calcium phosphate (BCP) to collagen membranes have been introduced. This study evaluated the efficacy and biocompatibility of BCP-supplemented UV-crosslinked collagen membrane for guided bone regeneration (GBR) in a rabbit calvarial model. Methods: Four circular bone defects (diameter, 8 mm) were created in the calvarium of 10 rabbits. Each defect was randomly allocated to one of the following groups: 1) the sham control group (spontaneous healing); 2) the M group (defect coverage with a BCP-supplemented UV-crosslinked collagen membrane and no graft material); 3) the BG (defects filled with BCP particles without membrane coverage); and 4) the BG+M group (defects filled with BCP particles and covered with a BCP-supplemented UV-crosslinked collagen membrane in a conventional GBR procedure). At 2 and 8 weeks, rabbits were sacrificed, and experimental defects were investigated histologically and by micro-computed tomography (micro-CT). Results: In both micro-CT and histometric analyses, the BG and BG+M groups at both 2 and 8 weeks showed significantly higher new bone formation than the control group. On micro-CT, the new bone volume of the BG+M group (48.39±5.47 ㎣) was larger than that of the BG group (38.71±2.24 ㎣, P=0.032) at 8 weeks. Histologically, greater new bone area was observed in the BG+M group than in the BG or M groups. BCP-supplemented UV-crosslinked collagen membrane did not cause an abnormal cellular reaction and was stable until 8 weeks. Conclusions: Enhanced new bone formation in GBR can be achieved by simultaneously using bone graft material and a BCP-supplemented UV-crosslinked collagen membrane, which showed high biocompatibility and resistance to degradation, making it a biocompatible alternative to chemically-crosslinked collagen membranes.

• 약학회지
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• 제47권5호
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• pp.339-344
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• 2003

Atenolol is a water soluble, ${\beta}_1$ selective adrenoceptor antagonist used in the treatment of angina and hypertension. It is primarily eliminated renally with minimal hepatic metabolism. The purpose of the present study was to evaluate the bioequivalence of Samchundang Atenolol (Samchundang Pharmaceutical Co., Korea.) to Tenolmin(Hyundai Pharmaceutical Ind. Co., Korea). The atenolol release from the two atenolol tablets in vitro was tested using KP VII Apparatus II method with various different kinds of dissolution media (pH 1.2, 4.0, 6.8 buffer solution and water). Twenty four normal male volunteers, 22.83$\pm$1.99 years in age and 65.82$\pm$7.15 kg in body weight, were divided into two groups and a randomized $2{\times}2$ cross-over study was employed. After one tablet containing 50 mg of atenolol was orally administered, blood was taken at predetermined time intervals and the concentrations of atenolol in serum were determined using HPLC method with fluorescence detector. The dissolution profiles of two atenolol tablets were very similar at all dissolution media. Besides, the pharmacokinetic parameters such as $AUC_{t}$, $C_{max}$ and $T_{max}$ were calculated and ANOVA test was utilized for the statistical analysis of the parameters using logarithmically transformed $AUC_{t}$ and $C_{max}$ and untransformed $T_{max}$. The results showed that the differences in $AUC_{t}$, $C_{max}$ and $T_{max}$ between two tablets based on the Tenolmin were 3.74％, 4.38％ and 17.77％, respectively. There were no sequence effects between two tablets in these parameters. The 90％ confidence intervals using logarithmically transformed data were within the acceptance range of log(0.8) to log(1.25) (e.g., log(0.98)∼log(1.l1) and log(0.95)∼log(1.l5) for $AUC_{t}$ and $C_{max}$ respectively), indicating that Samchundang Atenolol tablet is bioequivalent to Tenolmin tablet.

• 한국식품과학회지
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• 제41권4호
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• pp.362-368
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• 2009

커피 품종별 3종의 원두에 대한 로스팅 온도는 inlet air 기준으로 $150^{\circ}C$에서 $250^{\circ}C$ 사이로 로스팅 시간은 5, 10, 20분으로 각 조건별 PAHs 함량의 변화를 측정한 결과이다. Arabica 종인 Colombia 원두와 Brazil 원두 공시료의 총 PAHs 함량은 각각 1.78 ${\mu}g$/kg와 1.65 ${\mu}g$/kg로 비슷하였으며, Robusta 종인 India 원두는 0.38 ${\mu}g$/kg로 Arabica 종보다 적은 량이 검출되었다. 총 PAHs 함량도 Robusta 종에서 0.18-2.54 ${\mu}g$/kg이 검출되었으며, Arabica 종인 Colombia 원두와 Brazil 원두는 각각 1.26-215.70 ${\mu}g$/kg, 1.85-178.14 ${\mu}g$/kg로 Arabica 종에서 많이 검출되었으며, 품종별 B[${\alpha}$]P의 함량도 Colombia 원두에서 0.11-0.47 ${\mu}g$/kg, Brazil 원두에서 0.18-0.60 ${\mu}g$/kg, India 원두에서 0.03-0.11 ${\mu}g$/kg으로 Arabica 종에서 많이 검출되었다. 로스팅 조건별 실험 결과 일정한 변화를 보이진 않았지만, 저온 장시간 로스팅 한 시료보다 고온 단시간 로스팅 한 시료에서 총 PAHs가 많이 검출되었음을 확인하였으며, 시료별 실험결과 B[${\beta}$]F 함량은 Arabica 종인 Colombia 원두와 Brazil 원두를 250$^{\circ}C$에서 10, 20분 로스팅 하였을 때 많이 검출되었음을 확인하였다. 이에 따라 시중에 유통되고 있는 로스팅 커피의 모니터링을 통하여 섭취하고 있는 커피의 PAHs의 노출 정도를 파악하고, 커피 생산 공정에서 PAHs의 생성량을 저감화할 수 있는 로스팅 방식(직접가열방식, 열풍가열방식) 및 조건(온도, 시간) 확립에 대한 연구가 필요할 것으로 판단된다.