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최재균,김재민,강동욱,최정완,박진봉,안성훈,류연희,김현우 대한수의학회 2017 Journal of Veterinary Science Vol.18 No.3
The incidence of lung cancer has rapidly increased and cancer patients at a later cancer stage frequently suffer from unbearable cancer-associated pain. However, the pathophysiology of lung cancer pain has not been fully described due to a lack of appropriate animal models. This study was designed to determine the effect of Lewis lung carcinoma (LLC) cell inoculation on formalin-induced pain behavior and spinal Fos expression in C57BL/6 mice. LLC cells (1.5 × 105, 2.5 × 105, 3.0 × 105 or 5.0 × 105) were inoculated into back or peri-sciatic nerve areas. Back area inoculation was adopted to determine the effect of cancer cell circulating factors and the peri-sciatic nerve area was used to evaluate the possible effects of cancer cell contacting and circulating factors on formalin-induced pain. At postinoculation day 7, LLC cell (5.0 × 105) inoculations in both back and peri-sciatic nerve area significantly increased formalin-induced paw-licking time and spinal Fos expression over those in cell-media-inoculated (control) mice. Enhanced pain behavior and spinal Fos expression were significantly suppressed by ibuprofen pretreatment (250 mg/kg). The results of this study suggest that LLC cell circulating factors and inflammatory responses may be critical in enhancing pain sensation in the early stage of lung cancer cell inoculation.
위식도 역류 질환에 의한 비심인성 흉통 환자에서 에소메프라졸 20 mg 1일 2회 용법의 치료 효과 평가를 위한 공개, 무작위 배정 예비 연구
최재균,심현익,신철민,윤혁,박영수,김나영,이동호 대한소화기학회 2020 대한소화기학회지 Vol.75 No.6
Background/Aims: Non-cardiac chest pain (NCCP) is defined as recurrent angina pectoris-like pain without evidence of coronary heart disease, and is usually related to esophageal diseases, such as gastroesophageal reflux disease (GERD). Proton pump inhibitors (PPIs) are important for diagnosis and treatment. Many studies have been conducted on the use of PPIs in patients with GERD-related NCCP. In contrast to standard-dose esomeprazole, the efficacy of half-dose esomeprazole twice daily (BD) has not been established. This study compared the efficacies of the two esomeprazole regimens in GERD-related NCCP. Methods: In this prospective, open-label study, 37 participants with GERD-related NCCP were randomized to receive either 20 mg of esomeprazole BD (n=21) (esomeprazole BD group) or 40 mg once daily (n=16) (esomeprazole once daily [OD] group) for 4 weeks. In both groups, the chest pain score, which was calculated based on the frequency and severity, was evaluated before and 2 and 4 weeks after administering the medication. Results: The chest pain score significantly improved in both groups (p<0.001). The proportion of patients with chest pain score improvement >50% was 7.7% higher in the esomeprazole BD group than in the esomeprazole OD group (95.2% vs. 87.5%), but the difference was not significant. Conclusions: Esomeprazole BD was as effective as esomeprazole OD in improving GERD-related NCCP. Although statistically insignificant, the percentage of patients with >50% reduction in the chest pain score was higher in the esomeprazole BD group than in the esomeprazole OD group. Large-scale studies will be needed to assess these findings further.
Antinociceptive Effect of Cyperi rhizoma and Corydalis tuber Extracts on Neuropathic Pain in Rats
최재균,강석윤,김재민,노대현,윤서연,박진봉,이장헌,김현우 대한약리학회 2012 The Korean Journal of Physiology & Pharmacology Vol.16 No.6
In this study, we examined the antinociceptive effect of Cyperi rhizoma (CR) and Corydalis tuber (CT) extracts using a chronic constriction injury-induced neuropathic pain rat model. After the ligation of sciatic nerve, neuropathic pain behavior such as mechanical allodynia and thermal hyperalgesia were rapidly induced and maintained for 1 month. Repeated treatment of CR or CT (per oral, 10 or 30 mg/kg, twice a day) was performed either in induction (day 0∼5) or maintenance (day 14∼19) period of neuropathic pain state. Treatment of CR or CT at doses of 30 mg/kg in the induction and maintenance periods significantly decreased the nerve injury-induced mechanical allodynia. In addition, CR and CT at doses of 10 or 30 mg/kg alleviated thermal heat hyperalgesia when they were treated in the maintenance period. Finally, CR or CT (30 mg/kg) treated during the induction period remarkably reduced the nerve injury-induced phosphorylation of NMDA receptor NR1 subunit (pNR1) in the spinal dorsal horn. Results of this study suggest that extracts from CR and CT may be useful to alleviate neuropathic pain.
최재균 ( Jae Gyun Choe ),공두식 ( Doo Sik Kong ),김종현 ( Jong Hyun Kim ) 대한뇌종양학회·대한신경종양학회·대한소아뇌종양학회 2008 대한뇌종양학회지 Vol.7 No.2
Pineal parenchymal tumor of intermediate differentiation(PPTID) in adult is rare disease, but is capable of cerebrospinal fluid dissemination, similar to pineoblastoma. We present a case of a female patient aged 35 presented with 3-month history of paraparesis and urinary incontinence. Magnetic resonance imaging(MRI) demonstrated multiple vertebral and cerebral metastases originating from pineocytoma on which surgery and postoperative radiotherapy had been performed 7 years earlier, respectively. The patients received radiotherapy on the whole spine and whole brain, and adjuvant chemotherapy. In patients with PPTID, long term attention to leptomeningeal dissemination is required even if the tumor has been removed totally.