• 한국식품저장유통학회지
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• 제15권1호
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• pp.155-160
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• 2008

본 연구는 대구 무형문화재 제11호인 하향주의 품질 우수성을 규명하고자 향기성분 분석 후 랫드에 대한 알코올 대사 특성을 조사하였다. GC/MS 분석시, 하향주는 iso-butyl alcohol과 iso-amyl alcohol 등을 포함하여 17가지의 향기성분이 분석되었고 여과에 의해 acetaldehyde와 ethylacetate의 농도는 낮아짐을 확인하였다. 하향주와 동일한 농도인 17% 알코올을 SD계 랫드에 단회 경구 투여시 혈중 알코올 농도와 acetaldehyde 농도가 하향주 투여군이 낮았으며, 5시간 뒤 간조직에서 alcohol dehyogenase와 acetaldehyde dehyogenase의 농도는 하향주 투여군이 17% 알코올 투여군보다 높았다. 따라서 하향주는 동일농도의 17% 알코올 투여군보다 알코올 대사를 촉진시켜 숙취를 감소시킴을 확인하였다.

• Natural Product Sciences
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• 제29권2호
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• pp.74-82
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• 2023

Nepeta sibirica L. or Siberian catmint is a medicinal plant species used in Mongolian traditional medicine for curing human different disorders and veterinary practices. The previous study of the whole plant concentrated on the determination of its essential oil composition and reported that the major ones are sesquiterpenes, including nepetalactone. The aim of this study was to reveal a new biological activity of the above-ground parts of N. sibirica L. and compare the activity of different extracts correlating with the content of biologically active compounds and evaluate their toxicity. For this purpose, anti-oxidative and acetylcholinesterase inhibitory activities of the above-ground parts of N. sibirica L. aqueous and ethanol (EtOH) (40%, 70%) extracts were assayed spectrophotometrically. The aqueous extract showed positive anti-oxidative activity by both tested DPPH and FRAP assays with IC₅₀ 134.24 ± 1.42 mg/mL and FRAP value 1385.15 ± 8.12 µmol/L at 200 ㎍/mL, in contrast to 40% and 70% EtOH extracts. The 70% EtOH extract presented the highest acetylcholinesterase inhibitory activity (IC₅₀ 77.29 ± 0.38 mg/mL) followed by 40% EtOH extract (176.72 ± 0.35 mg/mL) and aqueous extract (275.41 ± 0.23 mg/mL). Total phenolics were found to be gallic acid equivalent, % 3.74 ± 0.05 (70% EtOH), 3.94 ± 0.04 (40% EtOH), and 3.79 ± 0.16 (aqueous), whereas the total flavonoids as a rutin equivalent, % as 2.01 ± 0.12, 1.44 ± 0.17 and 1.99 ± 0.02, each. The aqueous extract showed the best anti-oxidative and lowest activity against the acetylcholinesterase; however, the 70% EtOH extract showed the opposite effects than that of the aqueous. No mortality incidence was visible at various doses, indicating that the oral median lethal dose of aqueous and 70% EtOH extracts were considered greater than 5000 mg/kg. N. sibirica L. belongs to the non-toxic category of the OECD 423 classification.

• 생명과학회지
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• 제30권4호
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• pp.331-342
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• 2020

미세교세포(Microglial cells)에서 신경염증반응(neuroinflammatory responses)의 억제는 알츠하이머질환, 파킨슨질환, 헌팅턴질환과 같은 신경퇴행성질환(neurodegenerative diseases)을 치료하기 위한 주요 표적으로 고려되고 있다. 천문동(Asparagus cochinchinesis)은 열, 기침, 신장 질환, 유방암, 염증성질환 및 뇌질환을 치료하는 데 오랫동안 사용 되어온 전통 치료제(Traditional medicine)이다. 본 연구에서는 lipopolysaccharide (LPS)로 활성화된 BV-2 미세교세포에서 항염증효과가 있는 천문동 뿌리 열수추출물(Aqueous extract from A. cochinchinesis root, AEAC)의 신경보호 메커니즘을 연구하였다. 먼저, 어떤 유의적인 세포독성은 플라보노이드(flavonoid), 페놀(phenol), 사포닌(saponin)을 함유하는 AEAC를 4가지 농도로 처리된 BV-2세포에서 검출되지 않았다. 또한, nitric oxide (NO), cyclooxygenase-2 (COX-2) mRNA 및 inducible nitric oxide synthase (iNOS) mRNA 수준은 AEAC+LPS 처리군에서 비하여 21%정도 감소하였다. 전염증성 사이토카인(TNF-α과 IL-1β) 및 항염증성 사이토카인(IL-6와 IL-10)농도에 대한 유사한 감소는 비록 감소비율은 다르지만, Vehicle+LPS 처리군에 비해 AEAC+LPS 처리군에서 검출되었다. 더불어, LPS 처리 후 mitogen-activated protein (MAP) kinase의 인산화수준의 증가는 AEAC 전처리군에서 유의하게 회복되었고, 세포주기에서 G2/M의 억제(arrest)는 AEAC+LPS 처리군에서 개선되었다. 또한, LPS 처리로 유도된 ROS의 증가도 AEAC 전처리군에서 감소되었다. 따라서, 이러한 결과는 AEAC가 MAPK 신호전달 경로, 세포주기 및 ROS (reactive oxygen species) 생성의 조절을 통해 LPS 자극에 대한 항신경염증 활성을 유도함을 제시하고 있다.

• Asian-Australasian Journal of Animal Sciences
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• 제21권10호
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• pp.1522-1528
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• 2008

The objective of this study was to develop a model for simulating gastric digestion in the pig. The model was constructed to include the chemical and physical changes associated with gastric digestion such as enzyme release, digestion product removal and gastric emptying. Digesta was collected from the stomach cannula of pigs to establish system parameters and to document the ability of the model to simulate gastric digestion. The results showed that the average pH of gastric digesta increased significantly from 2.47 to 4.97 after feed consumption and then decreased 140 min postprandial. The model described the decrease in pH within the pigs' stomach as $pH_t=5.182e^{-0.0014t}$, where t represents the postprandial time in minutes. The cumulative distribution function of liquid digesta was $V_t=64.509e^{0.0109t}$. The average pepsin activity in the liquid digesta was 317Anson units/mL. There was significant gastric emptying 220 min after feed consumption. The cybernetic dynamic system of gastric digestion was set according to the above data in order to compare with in vivo changes. The time course of crude protein digestion predicted by the model was highly correlated with observed in vivo digestion (r = 0.97; p = 0.0001), Model prediction for protein digestion was higher than that observed for a traditional static in vitro method (r = 0.89; p = 0.0001).

• Toxicological Research
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• 제16권3호
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• pp.187-193
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• 2000

The antidotal, anticonvulsant and neuroprotective effects of physostigmine and procyclidine. the combinational prophylactics for organophosphate poisoning, were evaluated in rats. In comparison with a low protective effect (1.6 fold) of atropine (15 mg/kg) and 2-pralidoxime (30 mg/kg), the traditional antidotes regimen, a marked protection ratio of 7.3 fold was achieved by combinational pretreatment with physostigmine (0.05 mg/kg) and procyclidine (10 mg/kg), which was superior to that (3.5 fold) with pyri-dostigmine (0.1 mg/kg) and atropine (15 mg/kg). Rats exposed to a high dose (10 mg/kg. 2 X $LD_{50}$) of diisopropylfluorophosphate showed severe epileptiform seizures on electroencephalography, resulting in necrotic and apoptotic brain injuries in discrete brain regions under histopathological and TUNEL immuno-histochemical examinations in 24 hr. Such seizures and excitotoxic brain injuries were fully prevented by pretreatment with physostigmine (0.05 mg/kg) and procyclidine (10 mg/kg). in contrast to a negligible effect of pyridostigmine (0.1 mg/kg) and atropine (15 mg/kg). Taken together, it is proposed that the prophylactics composed of physostigmine and procyclidine could be a promising regimen for the prevention of lethality, seizures and brain injuries induced by organophosphate poisoning.

• Asian-Australasian Journal of Animal Sciences
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• 제15권5호
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• pp.751-756
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• 2002

A study was carried out to evaluate the incidences and causes of bovine mastitis in Tanzanian shorthorn zebu (Bos indicus) in the traditional sector and crossbred cows (Bos taurus${\times}$Bos indicus) in the dairy ranching sector, both found under the extensive range management system. Management practices were evaluated through a survey study using structured questionnaires. A total of 120 lactating cows (60 cows from each sector) were screened for the disease using the California Mastitis Test (CMT). Confirmatory tests used for infected cows included; the Direct Microscopic Somatic Cell Count (DMSCC), culture, bacteriological and biochemical laboratory assays. Survey results showed that management practices were generally very poor in both sectors with 84% of the surveyed herds being kept and milked under very unhygienic environmental conditions. The level of infection was higher in the crossbred cows (5% clinical and 38.3% sub-clinical mastitis) and lower in the zebu cows with only sub-clinical mastitis (23.3%). Crossbred cows had (p<0.05) higher somatic cell counts than zebu cows. The four highest-ranking bacterial isolates in order of importance were Staphylococcus aureus, Escherichia coli, Streptococcus agalactiae and Bacillus spp. It was concluded that bovine mastitis under the extensive management system in Tanzania was a result of poor management practices and that zebu cows were more resistant to the diseases than crossbred cows.

• Asian-Australasian Journal of Animal Sciences
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• 제23권6호
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• pp.806-813
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• 2010

Animal bioreactors have been regarded as alternative tools for the production of limited human therapeutic proteins. The mammary glands of cattle are optimal tissues to produce therapeutic proteins that cannot be produced in large amounts in traditional systems based on microorganisms and eukaryotic cells. In this study, two knock-in vectors, pBCTPOKI-6 and pBCTPOKI-10, which target the hTPO gene on the bovine beta-casein locus, were designed to develop cloned transgenic cattle. The pBCTPOKI-6 and pBCTPOKI-10 vectors expressed hTPO protein in culture medium at a concentration of 774 pg/ml and 1,867 pg/ml, respectively. Successfully, two targeted cell clones were obtained from the bovine fibroblasts transfected with the pBCTPOKI-6 vector. Cloned embryos reconstructed with the targeted nuclei showed a lower in vitro developmental competence than those with the wild-type nuclei. After transfer of the cloned embryos into recipients, 7 pregnancies were detected at 40 to 60 days of gestation, but failed to develop to term. The results are the first trial for targeting of a human gene on the bovine milk protein gene locus, providing the potential for a large-scale production of therapeutic proteins in the animal bioreactor system.

• 생약학회지
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• 제31권3호
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• pp.310-319
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• 2000

WooHwangChungSimWon is a traditional prescription formula for treating with hypertension, arteriosclerosis, coma, and stroke in China, Korea, and Japan. In the new prescription of WooHwangChungSimWon, the civet is substituted for the musk, the major component of WooHwangChungSimwon, because of the prohibition law (CITES) on the commercial use of musk. We have made a comparative study of the effects on the hypertension and contractile force of heart between the musk-containing and civet-containing WooHwangChungSimWon. The SHR rats were used for investigating the effects on the hypertension and the rabbits were used for investigating effects on the contractile force of isolated heart. The blood pressure which was recorded during the adminstration period showed that all the samples except the low dose of musk-containing WooHwangChungSimWon decreased the blood pressure, and the effects on the heart works of all the samples were higher than control group, which resulted from the examination of isolated heart. These results suggest that all the musk-containing and civet-containing WooHwangChungSimWon formula have similar protective effects on hypertension and palpitation.

• 한국응용약물학회:학술대회논문집
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• 한국응용약물학회 2008년도 Proceedings of the Convention
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• pp.119-142
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• 2008

Zizyphi Spinosi Semen (ZSS) has been widely used for the treatment of anxiety and insomnia in Korea and China. This experiment was performed to know whether sanjoinine A, one of major alkaloid compounds of ZSS has anxiolytic and hypnotic effects through the GABAergic systems. Our results showed that administration of sanjoinine A increased open arm entries and spent time in open arm in the elevated plus-maze and increased head dips in hole board test. Different from traditional anxiolytic, diazepam, sanjoinine A itself did not decrease locomotor activity and strength level in mice. Furthermore, Sanjoinine A (0.5-2.0 mg/kg) prolonged sleeping time and reduced sleeping latency induced by pentobarbital in a dose-dependent manner similar to muscimol, a $GABA_A$ receptor agonist. Sanjoinine A (0.25-1.0 mg/kg) also increased sleeping rate and sleeping time in the combined administration at the sub-hypnotic dose of pentobarbital and showed synergic effects with muscimol in potentiating sleeping onset and enhancing sleeping time induced by pentobarbital. However, sanjoinine A itself did not induce sleeping at the higher dose. In addition, both of sanjoinine A and pentobarbital increased chloride influx in primary cultured cerebellar granule cells. Sanjoinine A decreased the $GABA_A$ receptor ${\alpha}$-subunit expression and increased ${\gamma}$-subunit expression, and had no effects on abundance of ${\beta}$-subunit in primary cultured cerebellar granule cells, showing different expression of subunits from pentobarbital. In conclusion, sanjoinine A shows anxiolytic-like effects and augments pentabarbital-induced sleeping behaviors through the modification of GABAergic systems. [This work was supported by the Korea Research Foundation Grant funded by the Korean Government (MOEHRD) (The Regional Research Universities Program/Center for Healthcare Technology Development)].

• 대한임상검사과학회지
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• 제49권2호
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• pp.99-107
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• 2017

진균 속에 속하는 종인 Cordyceps는 중국의 전통약제로서, 그 유효성분인 cordycepin이 혈소판 응집에 관여한다는 보고가 있지만 phosphoprotein 조절에 관련된 연구는 미흡하다. 본 연구에서는, cordycepin이 fibrinogen binding에 관여한다고 알려진 PI3k/Akt와 $TXA_2$ 분비 및 과립방출에 관여한다고 알려진 p38와 같은 phosphoprotein의 인산화를 어떻게 조절하며 혈소판응집을 억제시키는지 규명하고자 하였다. 그 결과, cordycepin가 $261.1{\mu}M$의 $IC_{50}$으로 collagen이 유도한 혈소판 응집을 강력하게 억제하였고, PI3K와 Akt의 인산화를 감소시키며 ${\alpha}IIb/{\beta}_3$에 대한 fibrinogen 결합을 농도의존적으로 억제하였다. 또한, cordycepin은 collagen이 촉진시킨 p38의 인산화를 억제함으로써, 과립방출의 지표인 ATP 과 serotonin의 방출을 억제하였고 COX-1과 TXAS의 활성 및 $PLC-{\gamma}_2$ 인산화에 대한 영향없이 $TXA_2$ 생성량을 감소시켰다. 따라서, cordycepin은 PI3K/Akt, p38와 같은 phosphoprotein의 인산화를 억제함으로써 혈소판 응집억제를 나타내는 항혈전 치료 및 예방약물로서 유용한 가치가 있다고 여겨진다.