• Journal of Pharmaceutical Investigation
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• 제14권4호
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• pp.189-194
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• 1984

The present study was undertaken to evaluate the relative bioavailability of doxycycline hyclate and doxycycline-L-methylenelysine, a new synthetic derivative of doxycycline. Single doses, equivalent to 100mg of doxycycline hyclate, were administered orally to 10 healthy male volunteers. Serum concentrations were determined periodically over 12 hrs. by microbiological assay. Peak serum concentrations were reached within 4 hrs. Doxycycline hyclate $(1.38mcg.ml^{-1})$ gave 1.66 tines higher concentration than doxycycline-L-methylenelysine $(0.38mcg.\;ml^{-1})$. And the areas under the serum concentrationtime curves 0 to 12 hrs were $8.38mcg.hr.ml^{-1}$ (doxycycline hyclate) and $5.56mg\;hr.ml^{-1}$(doxycycline).

• Journal of Periodontal and Implant Science
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• 제49권3호
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• pp.148-157
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• 2019

Purpose: This study aimed to evaluate periodontal and pulpal healing in replanted rat teeth, preserved under different storage conditions, with or without root conditioning using doxycycline. Methods: A total of 40 maxillary first molars extracted from 20 Sprague-Dawley rats were stored for different durations under different conditions (5 minutes in dry storage and 60 minutes in Hank's balanced salt solution [HBSS]) and subsequently replanted. The rats were divided into 2 groups based on the use of root surface treatment: the doxycycline group (root surface treated with doxycycline) and the control group (no doxycycline treatment). Eight weeks after replantation, the animals were sacrificed, and the teeth were evaluated using micro-computed tomography (micro-CT) and histomorphometric analysis. Results: In the micro-CT analysis, the doxycycline group showed the same rate of occurrence of periapical radiolucency as was observed in the control group, but a lower degree of root resorption in teeth replanted after 60 minutes of storage in HBSS (P<0.05). In the histomorphometric analysis, the doxycycline group exhibited no improvement in either pulpal or periodontal healing of the replanted tooth after 5 minutes of dry storage, but showed a lower grade of surface root resorption ($1.37{\pm}0.77$) and inflammatory resorption in the teeth stored for 60 minutes in HBSS ($1.33{\pm}0.71$). Conclusions: In conclusion, doxycycline improved the periodontal healing of replanted teeth stored for 60 minutes in HBSS, whereas doxycycline did not improve periodontal healing of replanted tooth after 5 minutes of dry storage. Within the limits of this study, doxycycline showed more favorable periodontal healing despite delayed replantation.

• Tuberculosis and Respiratory Diseases
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• 제52권6호
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• pp.590-596
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• 2002

목 적 : 폐암은 악성 흉막 삼출액의 가장 흔한 원인으로 흉관 삽입후 흉막유착술을 시행하는 것이 치료에 널리 이용 되어왔다. 흉막경화제는 여러 종류가 알려져 있으나 그 효과나 부작용은 약제마다 차이가 있다. 이에 저자들은 대표적 흉막경화제인 doxycycline과 새로운 약제인 OK-432의 효과, 부작용 및 무병기간의 차이를 알아보기 위해 본 연구를 시행하였다. 방 법 : 1994년 1월부터 2001년 8월까지 흉막천자 세포진검사 혹은 흉막조직검사상 악성 흉막염이 확인된 폐암환자 중 OK-432나 doxycycline으로 흉막유착술을 시행한 79명의 환자에게서 흉막 유착술 후 30일째의 성공률을 조사하였으며, 약제의 부작용과 무병 생존기간을 후향적으로 조사하였다. 결 과 : OK-432와 doxycycline을 이용한 흉막유착술 후 30일째의 성공률은 각각 83%와 87%으로 유의한 차이가 없었으며 (p=0.677), 부작용으로 발열은 OK-432군 (59%, p=0.001)에서 유의하게 많았고, 통증은 doxycycline군 (73%, p=0.008)에서 유의하게 많았다 무병기간은 두 군 사이에 유의한 차이가 없었다(OK-432 : 13.6개월, doxycycline : 11.6개월)(p=0.532). 결 론 : 폐암으로 인한 악성 흉막액을 치료하는 OK-432는 doxycycline과 비슷한 흉막유착술치료 효과가 있을 것으로 생각된다.

• 한국임상약학회지
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• 제29권3호
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• pp.209-214
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• 2019

Doxycycline is frequently prescribed to treat urogenital infections or acne vulgaris. A 39-year-old man was prescribed doxycycline as a treatment for his skin infection. He took each tablet on an empty stomach in the morning, and just before going to bed with insufficient water. After taking the prescribed medication for approximately 3 weeks, he was diagnosed with esophageal ulcer. He had not experienced these symptoms before, and the drug label says that doxycycline rarely causes esophageal ulcer. After discontinuing the medication, the symptoms disappeared. Using the World Health Organization-Uppsala Monitoring Center criteria, the causality for doxycycline-induced esophageal ulcer was evaluated as "possible." Additionally, using the Naranjo scale and Korean causality assessment algorithm (Ver. 2), the causality was evaluated as "probable." Previous reports have stated that most patients who took doxycycline with insufficient water just before going to bed or in the supine position developed esophageal ulcer. Therefore, all patients taking doxycycline must be provided with detailed instructions about the appropriate administration methods.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2001년도 추계학술발표대회
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• pp.457-458
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• 2001

To determine the effect of ERp57 expression on thrombopoiein (TPO) productivity in recombinant Chinese hamster ovary (rCHO) cells, TPO producing rCHO cell line with doxycycline-regulated ERp57 expression \Vas developed. The Erp57 expression level could be regulated by addition of different concentrations of doxycycline to culture medium. The doxycycline concentration of I ${\mu}g/mL$ was high enough to suppress the ERp57 expression. Up to 5 ${\mu}g/mL$ doxycycline concentration used in culture medium, no observable cytotoxic effect of doxycycline was detected during culture. Overexpression of ERp57 、 vas found to increase the specific TPO productivity ($q_{Tpo}$) without growth inhibition, probably due to the chaperone-like activity of ERp57 in CHO cells.

• 한국어병학회지
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• 제33권1호
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• pp.45-53
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• 2020

Doxycycline is a semi-synthetic broad-spectrum antibiotic, and it has been used to get rid of bacteria in animals and humans. The use of antibiotics has greatly contributed to the aquaculture production although its misuse sometimes presents public health problems. This study was performed to investigate the toxic effects of doxycycline on whiteleg shrimp (Litopenaeus vannamei) administered for possible infection treatments. The shrimp were allocated into four groups and doxycycline was fed three times a day for 7 days at 0, 20, 50 and 100 mg/kg to each group. After 24 hr following the 7-day treatment, hemolymph and hepatopancreas were used for blood and biochemical analysis: Total hemocyte counts, Total protein, Total cholesterol, Gluscose, Glutamic pyruvic transaminase, Glutamic oxaloacetic transaminase, Glutathione peroxidase, Superoxide dismutase, Glutathione-s-transferases, Total antioxidant capacity colorimetric and Acid phosphatase. In addition, histopathological examination was performed on the hepatopancreas and muscle. It was observed that body weight gain was significantly retarded in 100 mg/kg doxycycline group. Doxycycline was found to induce biochemical or functional disorders at 100 mg/kg as observed many of the blood and biochemical parameters were significantly reduced. In conclusion, it was judged that there will be no major toxicity problems with doxycycline when used for shrimp aquaculture at regular doses.

• Tuberculosis and Respiratory Diseases
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• 제44권1호
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• pp.85-92
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• 1997

목적 : 말기암 환자에서 발생하는 악성 흉막삼출액의 치료로 흉관삽입후 경화제를 주입하여 흉악유착을 유발하는 대증요법이 많이 이용된다. 그러나 이들 경화제의 종류 및 투여방법에 따라서 그 효과 및 부작용은 달라진다. 이에 대표적으로 이용되는 경화제인 doxycycline 과 bleomycin의 단기간의 효과 및 부작용을 비교 분석하기 위하여 본 연구를 실시하였다. 방법 : 1993년 l월부터 1995년 9월까지 세포조직학적으로 악성 흉막전이가 확인되었으며 증상완화를 위해서 반복천자가 필요하였던 34명(폐암 28 명, 기타암 6명)을 대상으로 무작위로 doxycycline (16례)과 bleomycin(18례)를 흉막강내에 주입하여 입원기간 중의 단기간의 치료반응과 처치시에 생기는 부작용을 비교하였다. 그리고 치료 반응군과 실패군에서의 중앙생 존기간을 조사하였다. 성적 : Doxycycline 군의 성공률은 87.5 %로 bleomycin 군의 50.0%보다 유의하게 높았다(p=0.02). 부작용으로 통증은 두 군사이에 유의한 차이는 없었으나 발열, 오심은 bleomycin군에서 유의하게 많이 생겼다(각각 p=0.01. 0.04). 그러나 이들 대부분의 부작용은 대증요법으로 호전되었다. 치료약제의 종류에 상관없이 치료반응군의 중앙생존기간은 11개월로 치료 실패군의 5개월보다 유의하게 연장되었다(p<0.01). 결론 : 이상의 성적으로 경화제를 이용한 흉막유착술은 악성 흉막삼출액을 가진 환자의 대증요법으로 효과가 좋았다. Doxycline과 bleomycin을 비교해 보면 doxycycline이 부작용도 적었고 단기간의 치료성적도 우수하였다.

• Journal of Chest Surgery
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• 제50권4호
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• pp.281-286
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• 2017

Background: In chemical pleurodesis for managing pulmonary air leak, tetracycline derivatives are commonly used, and their effectiveness has been established in many studies. Recently, a Viscum album extract was used in chemical pleurodesis. We compared the effects of V. album with those of a tetracycline derivative (doxycycline) to demonstrate the therapeutic effectiveness of the V. album extract in chemical pleurodesis for managing pulmonary air leak. Methods: Between October 2010 and October 2016, chemical pleurodesis was performed using doxycycline in 40 patients and the V. album extract in 37 patients. Thirty-three patients were in the postoperative state after pulmonary resection, and 44 patients suffered from spontaneous pneumothorax. Results: No statistically significant difference in the success rate was observed between the 2 groups (V. album extract and doxycycline). In both groups, chest pain was the most common complication. More patients in the doxycycline group complained of severe chest pain (42.1% vs. 13.5%, p=0.006). In the V. album extract group, 24.3% of the patients required a chest tube to drain the pleural effusion after cessation of the air leak (doxycycline group: 5%, p=0.022). Further, the amount of pleural effusion drained on the day after the last chemical pleurodesis in the V. album extract group was greater than that in the doxycycline group ($162.2{\pm}170.2mL$ vs. $97.0{\pm}77.2mL$, p=0.032). All patients were discharged from the hospital without complications after pleural effusion drainage. Conclusion: Considering that treatment using the V. album extract was less painful, V. album might be a feasible option for chemical pleurodesis. However, pleural effusion should be monitored carefully when using V. album extract for treating patients suffering from air leak.

• Journal of Periodontal and Implant Science
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• 제36권2호
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• pp.335-344
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• 2006

Osteoblast or bone marrow stromal cell-derived RANKL is the major effector molecule essential for osteoclastogenesis. Previous studies have shown that tetracyclines have beneficial therapeutic effects in the prevention and treatment of inflammatory bone disease including periodontal disease. Periodontal ligament cells are thought not only to play an important role in the progression of periodontal disease, but to play an important role in alveolar bone remodeling. Previous studies indicated that receptor activation of nuclear factor $\kappa\;B$ ligand (RANKL) and osteoprotegerin (OPG) are expressed in periodontal ligament cells by pro-inflammatory cytokine, such as $IL-1{\beta}$ and $TNF-{\alpha}$. This study was designed to investigate the inhibitory effect of doxycycline on RANKL and OPG mRNA in rat periodontal ligament cells induced by $IL-1{\beta}$ (1 ng/ml). The results are as follows; 1. MTT assay showed that doxycycline at the concentration of $1-50\;{\mu}g/m{\ell}$ didn't result in statistically significant cell death at day 1 and 3. 2. RANKL mRNA expression was increased to 2.6 folds by $IL-1{\beta}$. When cells were treated with doxycycline ($50{\mu}g/m{\ell}$), $IL-1{\beta}$ -induced mRANKL expression was reduced by 33%. In contrast to RANKL, OPG mRNA expression was not inhibited by pre-treatment with doxycycline. These results suggest that doxycycline decrease the expression of mRANKL resulting in regulation of osteoclastogenesisp in rat periodontal ligament cells.

• Tuberculosis and Respiratory Diseases
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• 제62권6호
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• pp.545-548
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• 2007

쯔쯔가무시병은 추수 시기에 유행하는 대표적인 급성 열성질환으로 여전히 증가 추세에 있다. 의심되는 환자에게 Doxycycline 투여 후 급속한 해열이 질환의 독특한 특징이기도 한데 Doxycycline 투여 96시간 후에도 지속적인 고열과 근육통이 있었던 환자에게 Clarithromycin으로 변경 후 급속한 해열과 함께 증상이 호전된 증례를 보고한다.