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백서 하치조 신경 손상에 따른 감각 유발전위와 체성감각 유발전위의 변화에 관한 연구
김수남,이동근,우승철,천상우 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.4
Dysfunction of the inferior alveolar nerve may result from trauma, diseases or iatrogenic injury. The development and refinement of an objective method to evaluate this clinical problem is highly desirable and needed, especially concerning for an increasing medico-legal issue. Evoked potential techniques have attracted considerable attention as a means of assessing the function and integrity of nerve pathways. The purpose of this study was to characterize the Sensory Evoked Potentials(SEPs) and Somatosensory Evoked Potentials(SSEPs) elicited by electrical stimulation of mental nerve. SEPs and SSEPs were measured and analyzed statistically before and after needle injury on the inferior alveolar nerve of Sprague-Dawalye rats. Measuring SEPs was more sensitive in evaluation of the recovery of sensory function from inferior alveolar nerve injury then measuring SSEPs but we measured SSEPs in the hope of providing a safe, simple and objective test to check oral and facial sensibility, which is acceptable to the patient. We stimulated mental nerve after needle injury on the inferior alveolar nerve and SEPS on the level of mandibular foramen and SSEPs on the level of cerebral cortex were recorded. Threshold, amplitude, and latency of both of SEPs and SSEPs were analyzed. The results were as follows; 1. Threshold of SEPs and SSEPs were 184±14㎂ and 164±14㎂ respectively. 2 SEPs were composed of 2 waves, i.e., N1 N2 in which N1 was conducted by Ⅱ fibers and N2 was conducted by Ⅲ fibers. 3. SSEPs were composed of 5 waves, of which N1 and N2 shower statistically singnificant changes(p<0.01, unpaired t-test). 4. SEPs and SSEPs were observed to be abolished immediately after local anesthesia and recovered 30 minutes later. 5. SEPs were abolished immediately after injury. N1 of SSEPs was abolished immediately and amplitued of N2 was decreased(20.7±12.2%) immediately after 23G needle injury, but N3, N4 and N5 did not change significantly. Recovery of waveform delayed 30 minutes in SEPs and 45 minutes in SSEPs. 6. The degree of decrease in amplitude of SEPs and SSEPs, after 30G needle injury was smaller than those with 23G. SEPs recorded on the level of mandibular foramen were though to be reliable and useful in the assessment of the function of the inferior alveolar nerve after injury. Amplitude of SSEPs reflected the function and integrity of nerve and measuring them provided a safe, simple and abjective test to check oral and facial sensibility. These results suggest that measuring SEPs and SSEPs are meaningful methods for objective assessment in the diagnosis of nerve injury. N1 and N2 of SSEPs can be useful parameters for the evaluation of the nerve function following a needle injury.
Lee, Soo-Yong,Park, Min-Ah,Kim, Jae-Hong,Kim, Hyunsoo,Choi, Chel-Jong,Lee, Do-Kyung,Ahn, Kwang-Soon The Electrochemical Society 2013 Journal of the Electrochemical Society Vol.160 No.11
<P>Cu<SUB>2-x</SUB>S films in situ formed on brass substrates were annealed at different temperatures (100, 200, 300, and 400°C) in flowing Ar gas, and introduced as the counter electrodes (CEs) for CdSe quantum dot-sensitized solar cells (QD-SSCs). The QD-SSC with the bare Cu<SUB>2-x</SUB>S CE exhibited higher cell performance than that with the Pt CE. The QD-SSC with the 300°C-annealed Cu<SUB>2-x</SUB>S CE achieved the best energy conversion efficiency of 4.25%, showing a 34% increase compared to the cell performance of that with the bare Cu<SUB>2-x</SUB>S CE. This is because the Cu<SUB>2-x</SUB>S film annealed at 300°C provided rapid charge transport and the increased electrochemical active sites due to the improved crystallinity and surface roughening, leading to significantly enhanced electrocatalytic activity. On the other hand, when the Cu<SUB>2-x</SUB>S film was annealed at 400°C, secondary phases, such as CuO, Cu<SUB>2</SUB>O, CuSO<SUB>4</SUB> and ZnO, formed, which reduced the cell performance of the QD-SSC with the 400°C-annealed Cu<SUB>2-x</SUB>S CE due to the poor electrocatalytic activity.</P>
Pretreatment neutrophil:lymphocyte ratio as a prognostic factor in cervical carcinoma.
Lee, Yoo-Young,Choi, Chel Hun,Kim, Ha-Jeong,Kim, Tae-Joong,Lee, Jeong-Won,Lee, Je-Ho,Bae, Duk-Soo,Kim, Byoung-Gie Potamitis Press 2012 Anticancer research Vol.32 No.4
<P>This study was designed to investigate the prognostic value of the neutrophil:lymphocyte ratio (NLR) in cervical cancer.</P>
( Soo Young Jeong ),( Jun Hyeok Kang ),( Myeong Seon Kim ),( E Sun Paik ),( Chel Hun Choi ),( Tae Joong Kim ),( Jeong Won Lee ),( Byoung Gie Kim ),( Duk Soo Bae ),( Yoo Young Lee ) 대한산부인과학회 2019 대한산부인과학회 학술대회 Vol.105 No.-
Objective: When epithelial ovarian cancer(EOC) patients recur, secondary cytoreductive surgery(SCS) and adjuvant chemoteherapy(AC) are performed in selected patients. This study was performed to identify the impact of intervals between SCS and AC in recurrent EOC patients. Methods: Recurrent EOC patients performed SCS and AC from January 2002 to December 2015 were enrolled in this retrospective study. The treatment interval(TI) was defined as the period between SCS date and initiation date of AC. Overall survival(OS) and progression-free survival(PFS) were calculated by the Kaplan-Meier method. Univariate and multivariate analyses were used to evaluate the association of demographic and clinical variables with OS in Cox-proportional hazard models. Results: A total of 79 patients met the inclusion criteria. We divided into two groups according to the median level of TI, 10 days(range, 4-42). Each group was included 42(53.1%) and 37(46.9%) patients. Two groups were similar in clinical and pathological characteristics. The TI was not a significant prognostic factor for recurrence and death in recurrent EOC (HR for PFS 0.67, p=0.670, HR for OS 0.772, p=0.433). However, CA-125 level before SCS, residual status after SCS, and platinum-free interval were significantly prognostic factors of recurrence and death in patients with SCS and AC. (HRs for PFS were 1.976, 2.366, and 0.509, HRs for OS were 2.664, 3.699, and 0.462, all p-value<0.05). Survival rates were improved when disease were resected completely at SCS, when CA-125 level before SCS was lower, when platinum-free interval was longer, and when surgery type was laparoscopic (all p-value<0.05). However, the TI was not related with survival rates(p=0.431). Conclusion: In this study, when SCS and AC were performed in recurrent EOC patients, the TI was not related with survival and the most powerful prognostic factor was ‘complete resection at SCS’. Larger cohort study will need to confirm the impact of TI.
Lee, Eun-Ju,Kim, Tae-Joong,Choi, Chel Hun,Lee, Jeong-Won,Lee, Je-Ho,Bae, Duk-Soo,Park, Hyoung Moo,Kim, Byoung-Gie S. Karger AG 2012 Gynecologic and obstetric investigation Vol.74 No.4
<P>Abstract</P><P><B><I>Aim:</I></B> To evaluate prognostic factors in Korean patients with endometrial cancer. <B><I>Methods:</I></B> A retrospective analysis was conducted on 248 patients who were staged surgically at the Samsung Medical Center between 1995 and 2004. Survival data were analyzed using Kaplan-Meier estimates, and multivariate analysis was performed using the Cox regression method. <B><I>Results:</I></B> The median age was 51 years (range 21–75), which was younger than in previous studies in Western patients, and the age of 50 years was the cutoff to predict survival. More than half (55.6%) were normal weight or underweight (BMI <25). Multivariate analysis revealed that age, Fédération Internationale de Gynécologie et d’Obstétrique (FIGO) stage, and histopathology were independent predictors of disease-free survival, and FIGO stage and p53 mutation were independent prognostic factors for disease-specific survival (DSS). The 5-year DSS for patients with stage I, II, III and IV disease was 95.6, 93.8, 69.8 and 50%, respectively. The 5-year DSS rate for patients with a p53 mutation was 84.4%, compared with 97.1% for patients without. <B><I>Conclusions:</I></B> Korean patients with endometrial cancer were younger and had a lower BMI than previously reported. Furthermore, age greater than 50 years was predictive of a poor outcome. Age, FIGO stage, histopathology and a p53 mutation were independent prognostic factors for survival.</P><P>Copyright © 2012 S. Karger AG, Basel</P>
Lee, Yoo-Young,Choi, Chel Hun,Kim, Chul Jung,Kang, Heeseok,Kim, Tae-Joong,Lee, Jeong-Won,Lee, Je-Ho,Bae, Duk-Soo,Kim, Byoung-Gie Elsevier 2009 Gynecologic oncology Vol.115 No.1
<P><B>Abstract</B></P> <P><B>Objective</B></P> <P>The objective of this study was to evaluate the prognostic significance of the cervical tumor uptake of fluorine-18-labeled FDG (fluorodeoxyglucose) measured as the SUVmax (maximum standardized uptake value) by PET (Positron Emission Tomography) in patients with early cervical cancer treated with surgery±adjuvant therapy.</P> <P><B>Methods</B></P> <P>Forty-four patients (FIGO clinical stage IB to IIA) with biopsy-proven cervical cancer underwent PET before surgery. The SUVmax of the primary cervical tumor mass was obtained and compared with pathological prognostic factors after the initial treatment. In addition, we investigated the recurrence pattern according to the SUVmax and analyzed independent risk factors associated with the recurrence of disease.</P> <P><B>Results</B></P> <P>According to the tumor stage, the mean SUVmax significantly differed among groups (<I>P</I> =0.013). The SUVmax was significantly higher in patients with deep stromal invasion (≥1 cm, <I>P</I> =0.0208), LVSI (lymph-vascular space invasion) (<I>P</I> =0.0429) and a pathologically confirmed large tumor size of more than 4 cm (<I>P</I> =0.0074) when compared to controls. Patients with a high SUVmax (≥13.4) had a significantly reduced disease-free survival rate compared to patients with a low SUVmax (<I>P</I> =0.021). In addition, the SUVmax (≥13.4) was a significant independent predictor of recurrence of cervical cancer after treatment with surgery (±adjuvant therapy) (<I>P</I> =0.0207).</P> <P><B>Conclusion</B></P> <P>Patients with early cervical cancer showing a high SUVmax (≥13.4) of the cervical tumor should be considered at increased risk for disease recurrence after surgery and may need more aggressive multimodal treatment.</P>
Choi, Chel Hun,Song, Sang Yong,Kang, Heeseok,Lee, Yoo-Young,Kim, Chul-Jung,Lee, Jeong-Won,Kim, Tae-Joong,Kim, Byoung-Gie,Lee, Je-Ho,Bae, Duk-Soo Blackwell Publishing Asia 2010 JOURNAL OF OBSTETRICS AND GYNAECOLOGY RESEARCH -TO Vol.36 No.2
<P>Abstract</P><P>Aim: </P><P>To better predict treatment responses for managing bulky cervical carcinoma with neoadjuvant chemotherapy (NAC).</P><P>Methods: </P><P>The expression of p-STAT3 was analyzed by immunohistochemistry using paraffin-embedded pretreatment cervical biopsy tissues. The study included 29 patients with bulky IB to IIA cervical squamous cell carcinoma treated with NAC.</P><P>Results: </P><P>Twenty (69.0%) of 29 patients were scored as p-STAT3-positive. Pathological response to chemotherapy (complete response or residual tumor with less than 3 mm stromal invasion) was observed in eight patients (27.6%). The p-STAT3-positive patients had a longer disease-free survival compared to p-STAT3-negative patients (<I>P</I> = 0.03), though they had more frequent clinical nodal involvement (<I>P</I> = 0.046).</P><P>Conclusion: </P><P>Pretreatment assessment of p-STAT3 expression may provide additional information for the identification of patients with cervical cancer who have a favorable prognosis.</P>