• 대한치과의사협회지
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• 제48권6호
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• pp.436-442
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• 2010

Objective: Transmission of S. mutans, a major dental caries pathogen, occurs mainly during the first 2.5 years of age. Children appear to acquire S. mutans mostly from their mothers, but few studies have investigated preventive effect of xylitol to S. mutans transmission from mother to child. The aim of this study was to perform a follow-up evaluation the preventive effect of xylitol chewing gum of the S. mutans of children's oral cavities, which included the characteristics of vertical transmission from mother to child. Methods: The mothers voluntarily participating in a women's oral health prevention program were divided into two groups (a control and a xylitol group). The subjects were 20 mother-child pairs, who were monitored for 30 months. Xylitol chewing gum group had consumed 2 gum pellets, 3 times a day for 24 months, and then they were followed until 30 months. At baseline, 24 and 30 months whole stimulated saliva samples were collected from the mothers. Children were also recruited from 6 months to 30 months after birth and were collected their dental plaque samples. After isolation and identification, the analysis of the colony count, transmission electron microscopy and real-time RT-PCR were performed to analyze the characteristics of S. mutans. Results: The S. mutans counts decreased steadily in the xylitol group at 24 months, but increased at 30 months. The similar results were showed at their children. While the glucan synthesis was decreased at xylitol group both mother and child. The expression of gtfB, gtfD and ftf were significantly reduced in the xylitol group both mother and child (p<0.05). Conclusions: These findings indicate that chewing xylitol gum over a long period may decrease the expression of the genes associated virulence and reduced the glucan synthesis of S. mutans, which can result the preventing the mother-to-child transmission of S. mutans.

• Pediatric Infection and Vaccine
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• 제5권2호
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• pp.289-295
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• 1998

Group B Streptococcal sepsis and/or meningitis is one of the most serious and common diseases in the neonatal period with high mortality and frequent complications. We have experienced a case of late onset type group B streptococcal sepsis and meningitis with a complication of subclavian vein catheterization catheterization. This 29-day-old male neonate was admitted to intensive care unit with the presentation of fever and septic shock. He was born with Cesarean delivery at 36 weeks and 3 days of gestational age. He showed multiple episodes of seizure after admission and group B streptococcus was isolated from blood. CSF profiles 10 days after admission showed the features of bacterial meningitis without organism isolated. Diffuse cerebral infarction was detected on brain CT 24 days after admission. In the 13th hospital day, the complication of subclavian vein catheterization occurred; Guide wire was cut during insertion and the distal portion of it(2.5cm) was retained in the left subclavian vein. We removed the retained guide wire with goose-neck snare catheter via right femoral vein. This case was presented with a brief review of the literatures.

• Pediatric Infection and Vaccine
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• 제25권1호
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• pp.45-49
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• 2018

B군 사슬알균은 3개월 미만 영아에서 발생하는 침습성 감염증의 주요한 원인균이다. 신생아 침습성 B군 사슬알균 수막염에 의한 뇌혈관 합병증은 드물게 보고되고 있다. 발열을 주소로 내원한 생후 29일 신생아에서 세균성 수막염이 진단되었다. 입원 3일째 경련이 발생하였고 뇌 자기공명영상에서 다발성의 광범위한 대뇌피질(양측 전두엽, 측두엽 및 후두엽)과 뇌량 및 좌측 후두엽에서 급성 뇌경색증 합병된 소견을 보였다. 환아의 혈액과 뇌척수액에서 B군 사슬알균이 분리되었고 serotype III, ST-19으로 확인되었다. 현재 환아는 피질맹과 발달 지연을 보이고 있다.

• 한방안이비인후피부과학회지
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• 제12권1호
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• pp.18-35
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• 1999

Coptidis Rhizoma, Fraxini Cortex, Jinpisan(秦皮散) have been as eye washes of inflammatory eye disease in the oriental medicine. Especially Jinpisan(秦皮散) has been used for the disease which is similar to Peudomonas aeruginisa keratitis. This research was attempted to investigate the effect of Coptidis Rhizoma, Fraxini Cortex, Jinpisan(秦皮散), on Peudoronas aeruginisa keratitis. Pseudomonas aeruginosa keratitis causes a deep rapid intense ulceration which often leads to perforation of the cornea within 48 hours. In this research, we induced keratits in the rabbits by inoculating Pesudomonas aeruginosa(9027) and observed the effect on the keratitis and the irritation against the external eye. Also we mesured the minimum inhibitory consentration(MIC) of Coptidis Rhizoma, Fraxini Cortex, Jinpisan(秦皮散) by agar diliution method and the anti-bacterial activites by disk method. The tested bacteria were as follows : a) Pseudomonas aeruginosa (9027), b) Streptococcus pneumoniae(6303), c) Staphylococcus epidermidis(12228), d) Staphylococcus aureus(6538P). The results were as follows ; 1. The groups which were applied eye washes of Fraxini Cortex, Jinpisan reavealed a significant effect, but the group applied eye wash of Coptidis Rhizoma reveaded no effect on Pseudomonas aeruginosa keratitis. 2. Applying eye washes of Coptidis Rhizoma, Fraxini Cortex, Jinisan revealed an irritation against external eyes. 3. Coptidis Rhizoma showed an anti-bacterial activity on Pseudomonas aeruginosa, Streptococcus pneumoniae, Staphylococcus epidermidis, Staphylucoccus aureus by agar diliution method 4. Coptidis Rhizoma showed an anti-bacterial activity on Pseudomonas aeruginosa, Streptococcus pneumoniae, Staphylococcus epidermidis, Staphylococcus aureus by disk method. 5. Fraxini Cortex showed an anti-bacterial activity on Pseudomonas aeruginosa, Streptococcus pneumoniae, Staphylococcus epidermidis, Staphylococcus aureus by agar diliution method 6. Fraxini Cortex showed an anti-bacterial activity on Pseudomonas aeruginosa, Sireptococcus pneumoniae, Staphylococcus epidermidis, Staphy1ococcus aureus by disk method. 7. Jinpisan showed an anti-bacterial activity on Pseudomonas aeruginosa, Streptococcus pneumoniae, Staphylococcus epidermidis, Staphylococcus aureus by agar diliution method. 8. Jinpisan showed an anti-bacterial activity on Pseudomonas aeruginosa, Streptococcus pneumoniae, Staphylococcus epidermidis, Staphylococcus aureus by disk method. According to the above results, Fraxini Cortex, Jinpisan(秦皮散) are recognized to have an effective treatment on the Pesudomonas aeruginosa keratitis, so this experiment is thought to be a basic ingredient in proving the effect of Fraxini Cortex, Jinpisan which is applied many in documents and clinical medicine. In the comparison of anti-bacterial activity and results of treatment on the Pesudomonas aeruginosa keratitis, Jinpisan(秦皮散) was more effective than Coptidis Rhizoma, Fraxini Cortex.

• 대한치과교정학회지
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• 제49권4호
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• pp.246-253
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• 2019

Objective: To evaluate the effectiveness of three different caries-preventing agents on artificial caries in a Streptococcus mutans-based caries model. Methods: Sixty-five caries-free human molar enamel blocks were treated with a demineralization solution and a remineralization solution. The specimens were assigned to the following groups according to the caries-protective product applied: group A, chlorhexidine varnish; group B, fluoride-releasing chemically cured sealant; group C, fluoride-releasing lightcured sealant; group D, positive control (specimens that were subjected to de- and remineralization cycles without treatment with any caries-protective agents); and group E, negative control (specimens that were not subjected to de- and remineralization cycles). Samples in groups A-D were stored in demineralization solution with S. mutans and thereafter in artificial saliva. This procedure was performed for 30 days. Average fluorescence loss (${\Delta}F$) and surface size of the lesions were measured using quantitative light-induced fluorescence at baseline and on the 7th, 14th, and 30th days. Results: After 30 days, group A demonstrated a significant increase in ΔF and the surface size of the lesions, no significant difference in comparison with the positive control group, and a significant difference in comparison with the negative control group. Group B showed no significant changes in both parameters at any of the measurement points. While group C showed increased ${\Delta}F$ after 14 days, no significant fluorescence change was observed after 30 days. Conclusions: Both fluoride-releasing sealants (chemically or light-cured) show anti-cariogenic effects, but the use of chlorhexidine varnish for the purpose of caries protection needs to be reconsidered.

• Asian-Australasian Journal of Animal Sciences
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• 제28권8호
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• pp.1202-1208
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• 2015

The effects of daily dietary Bacillus subtilis (Bs), and adding L-tryptophan, fructan, or casein to fecal fermentation broths were investigated as means to reduce the production of noxious gas during manure fermentation caused by ammonia, hydrogen sulfide ($H_2S$), and 3-methylindole (skatole). Eighty swine ($50.0{\pm}0.5kg$) were equally apportioned to an experimental group given Bs in daily feed, or a control group without Bs. After 6 weeks, fresh manure was collected from both groups for fermentation studies using a $3{\times}3$ orthogonal array, in which tryptophan, casein, and fructan were added at various concentrations. After fermentation, the ammonia, $H_2S$, L-tryptophan, skatole, and microflora were measured. In both groups, L-tryptophan was the principle additive increasing skatole production, with significant correlation (r = 0.9992). L-tryptophan had no effect on the production of ammonia, $H_2S$, or skatole in animals fed Bs. In both groups, fructan was the principle additive that reduced $H_2S$ production (r = 0.9981). Fructan and Bs significantly interacted in $H_2S$ production (p = 0.014). Casein was the principle additive affecting the concentration of ammonia, only in the control group. Casein and Bs significantly interacted in ammonia production (p = 0.039). The predominant bacteria were Bacillus spp. CWBI B1434 (26%) in the control group, and Streptococcus alactolyticus AF201899 (36%) in the experimental group. In summary, daily dietary Bs reduced ammonia production during fecal fermentation. Lessening L-tryptophan and increasing fructan in the fermentation broth reduced skatole and $H_2S$.

• International Journal of Oral Biology
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• 제41권4호
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• pp.253-262
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• 2016

Streptococcus mutans (S. mutans) is one of the most important bacteria in the formation of dental plaque and dental caries. S. mutans adheres to an acquired pellicle formed on the tooth surface, and aggregates with many oral bacteria. It initiates plaque formation by synthesizing glucan from sucrose, which is catalyzed by glucosyltransferases. Propolis is a resinous mixture produced by honeybees, by mixing saliva and beeswax with secretions gathered from wood sap and flower pollen. Bees prevent pathogenic invasions by coating the propolis to the outer and inner surface of the honeycomb. Propolis has traditionally been used for the treatment of allergic rhinitis, asthma and dermatitis. We investigated the inhibitory effects of propolis ethanol extract on biofilm formation and gene expression of S. mutans. The biofilm formation of S. mutans was determined by scanning electron microscopy (SEM) and safranin staining. We observed that the extract of propolis had an inhibitory effect on the formation of S. mutans biofilms at concentrations higher than 0.2 mg/ml. Real-time PCR analysis showed that the gene expression of biofilm formation, such as gbpB, spaP, brpA, relA and vicR of S. mutans, was significantly decreased in a dose dependent manner. The ethanol extract of propolis showed concentration dependent growth inhibition of S. mutans, and significant inhibition of acid production at concentrations of 0.025, 0.05, 0.1 and 0.2 mg/ml, compared to the control group. These results suggest that the ethanol extract of propolis inhibits gene expression related to biofilm formation in S. mutans.

• 약학회지
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• 제8권3호
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• pp.80-84
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• 1964

The purpose of this investigation is to observe tha variation of vitamin $B_{12}$, nicotinic acid and folic acid contents in relation to the growing years of Panax Ginseng roots. The contents of the vitamins were estiamted microbiologically with Lactobacillus leichmannii, Lactobacillus arabinosus and Streptococcus faecalis, respectively. It is found that the content of vitamin $B_{12}$ in Panax Ginseng roots somewhat increases according to their growing years except 3-year-old roots. It is probable that the lower content in these roots should be due to the cultivating soil. The content of nicotinic acid in all the roots is not significantly different. The result of paper chromatography using the concentrated extract of the roots suggests that there exists some other substance besides nicotinic acid and nicotinamide, of which Rf value is 0.5 in comparison with the Rf 0.75 of nicotinic acid and nicotinamide. It is thought that this substance stimulate the growth of L. arabinosus. The content of folic acid is significantly different. The content level is the highest in the 4-year-old roots and the lowest in the 6-year-old roots.

• 한국임상수의학회지
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• 제25권3호
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• pp.159-164
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• 2008

This study was carried out to determine the therapeutic effect of injection-acupuncture (AP) with bee-venom (apitoxin) in cases of canine otitis externa (COE). Fifteen dogs with naturally-acquired otitis externa were used in this study. The dogs were divided into the following antibiotics group (control group), apitoxin group (experimental group A) and apitoxin combined with antibiotics group (experimental group B). All groups were treated by ear cleaning with normal saline once on day 1. The control group was treated with susceptible antibiotics, and experimental group A was given injection-AP with apitoxin $(100{\mu}g/head)$ at TH17 (Yi Feng), SI19 (Ting Gong), GB03 (Shang Guan) and TH03 (Zhong Zhu) bilaterally. Experimental group B was treated with susceptible antibiotics and injection-AP with apitoxin at the same acupoints as experimental group A. All the groups were treated 3 times/week for 2 weeks. The identity of the causative agents, the changes in the clinical signs, otoscopic findings, bacterial count in the auricular discharges, and total WBC counts and neutrophil/lymphocyte (N/L) ratio in the peripheral blood were investigated in all groups. In bacterial isolation, Staphylococcus spp. combined with Streptococcus spp. was detected higher than other agents. The bacterial cell count in experimental group A was significantly decreased at 2 weeks (p<0.01), and those in experimental group B was significantly decreased at 1 week (p<0.01) and 2 weeks (p<0.01) compared by those of control group, respectively. The changes of clinical score in experimental group B were significantly decreased at 2 weeks (p<0.01) compared by those of control group, but, those of experimental group A was similar to those of control group. The changes of total WBC counts and neutrophil/lymphocyte (N/L) ratio were no significant difference found. In conclusion, injection-AP with apitoxin is an effective treatment for COE and might be an alternative method for treating COE.

• Pediatric Infection and Vaccine
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• 제14권1호
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• pp.43-46
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• 2007

목 적 : 신생아의 세균성 수막염은 이환률과 사망률이 높으며 생존한 경우에도 신경학적 후유증의 빈도가 높은 질환으로 알려져 있다. 본 연구에서는 1997년부터 2005년까지의 부산 지역에서 발생하였던 신생아 세균성 수막염의 임상 양상에 대하여 알아보고자 하였다. 방 법 : 1997년 1월부터 2005년 12월까지 부산지역 4개 대학 병원 소아과에서 세균성 수막염으로 입원한 환자 중에서 생후 60일 미만의 21명의 신생아를 대상으로 하여 수막염의 발생시기, 주 증상, 원인 균주, 합병증 등을 조사하였다. 이들 중 뇌척수액 배양에서 균주가 동정되었거나, 뇌척수액 검사에서 백혈구가 30개 이상이며, 혈액 배양에서 균주가 동정되었던 경우만 대상으로 하였고, S. epidermidis가 동정된 경우와 원내 감염 및 선천성 기형은 제외 하였다. 결 과 : 대상 환아 중 남아는 11명, 여아는 10명이었으며, 미숙아가 1명이었다. 발생 시기는 생후 2-3주가 7례로 가장 많았으며 생후 1-2주가 6례, 4주 이상의 경우가 5례였고, 1주 미만의 경우는 3례로 빈도가 가장 낮았다. 입원 당시의 주 증상으로는 발열이 18례, 경련이 8례, 수유 불량, 기면, 구토, 보챔 등의 순이었다. 원인 균주로는 GBS가 11례로 가장 많았으며, E.coli와 Klebsiella pneumoniae가 각각 3례를 차지하였고, S. pneumoniae가 2례, Listeria monocytogens와 Enterobacter cloacae가 각각 1례였다. 치료 결과 생존한 환아가 18명, 사망한 환아는 3명이었고, 생존한 환아 중 1례에서 정신지체, 발달 지연, 경련성 질환 등의 장애가 발생하였다. 결 론 : 배양 검사로 확진된 신생아기에 발생한 뇌수막염의 원인균으로는 알려진 사실과 같이 GBS가 가장 흔했다. 외국과 비교하여 현재 국내 배양 검사의 민감도를 생각해 볼 때 향후 민감도의 질적 향상이 필요하며 국내의 발생률 및 임상양상에 대하여 장기간의 추적 검사를 통한 대규모의 전향적인 연구가 필요할 것으로 생각된다.