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      • KCI등재

        Comparison of Short- and Long-term Hearing Outcomes of Successful Inlay Cartilage Tympanoplasty Between Small and Large Eardrum Perforations

        Pei-Wen Wu,Wen-Hung Wang,Chi-Che Huang,Ta-Jen Lee,Chien-Chia Huang 대한이비인후과학회 2015 Clinical and Experimental Otorhinolaryngology Vol.8 No.4

        Objectives. To compare the short- and long-term hearing outcomes after successful inlay cartilage tympanoplasty between patients with small (≤25%) and large (≥50%) eardrums perforations. Methods. This is a retrospective case series study conducted in a tertiary referral center. Twenty-five patients who underwent 27 procedures were enrolled. Their mean age was 60.26 years (range, 42 to 76 years). The mean follow-up time was 18.86 months (range, 12.30 to 35.83 months). The preoperative, initial postoperative, and long-term hearing results in patients with total repair of the eardrum were analyzed. Results. In the small size group, the average (±standard deviation) air-bone gap (ABG) closure was 1.08±7.53 dB in the short-term and 2.33±11.56 dB in the long-term hearing examinations. There was no difference between short- and long-term ABG closure (P=0.689). In the large size group, the average ABG closure was 9.77±9.40 dB in the short-term and 16.25±6.01 dB in the long-term hearing examinations. There was a significant difference between short- and long-term ABG closure (P=0.029). Conclusion. Patients with large perforations have continuous hearing improvement and ABG closure for more than one year. In contrast, the short- and long-term postoperative ABGs are almost the same in patients with small perforations. More long-term postoperative follow-up of hearing results is necessary for large perforations.

      • Discrete Hartley Transform Quantization Table Design by Genetic Algorithm for Medical Image Compression

        Wen-Jan Chen,Chi-Ruen Huang 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7

        Mediclal images are widely used in the diagnosis of diseases. The technique of X-ray, Magnetic Resonance Images (MRI) and Computed Tomography (CT) are used widely in medical image. Because the bandwidth of network is restricted, the store and compression techniques for medical image become more and more important. In this paper, we present a scheme to get better 2-D Discrete Hartley Transform (DHT) quantization table by Genetic Algorithm (GA) for medical image compression.

      • KCI등재후보

        Heuristic Algorithms for Constructing Interference-Free and Delay-Constrained Multicast Trees for Wireless Mesh Networks

        ( Wen-lin Yang ),( Chi-chou Kao ),( Cheng-huang Tung ) 한국인터넷정보학회 2011 KSII Transactions on Internet and Information Syst Vol.5 No.2

        In this paper, we study a problem that is concerning how to construct a delay-constrained multicast tree on a wireless mesh network (WMN) such that the number of serviced clients is maximized. In order to support high-quality and concurrent interference-free transmission streams, multiple radios are implemented in each mesh node in the WMNs. Instead of only orthogonal channels used for the multicast in the previous works, both orthogonal and partially overlapping channels are considered in this study. As a result, the number of links successfully allocated channels can be expected to be much larger than that of the approaches in which only orthogonal channels are considered. The number of serviced subscribers is then increased dramatically. Hence, the goal of this study is to find interference-free and delay-constrained multicast trees that can lead to the maximal number of serviced subscribers. This problem is referred as the MRDCM problem. Two heuristics, load-based greedy algorithm and load-based MCM algorithm, are developed for constructing multicast trees. Furthermore, two load-based channel assignment procedures are provided to allocate interference-free channels to the multicast trees. A set of experiments is designed to do performance, delay and efficiency comparisons for the multicast trees generated by all the approximation algorithms proposed in this study.

      • KCI등재

        Almond Skin Polyphenol Extract Inhibits Inflammation and Promotes Lipolysis in Differentiated 3T3-L1 Adipocytes

        Wen-Chung Huang,Chi-Yuan Chen,Shu-Ju Wu 한국식품영양과학회 2017 Journal of medicinal food Vol.20 No.2

        Studies have shown that polyphenols reduce the risk of inflammation-related diseases and upregulates energy expenditure in adipose tissue. Here, we investigated the mechanism of the anti-inflammatory and antiobesity effects of almond skin polyphenol extract (ASP) in differentiated 3T3-L1 adipocytes. The antioxidant effects of ASP were measured based on DPPH radical scavenging activity, Trolox equivalent antioxidant capacity, and total phenolic content. Differentiated 3T3-L1 cells were treated with ASP. Subsequently, lipolysis proteins and transcription factors of adipogenesis were measured. The proinflammatory mediators monocyte chemotactic protein-1 (MCP-1) and chemokine ligand 5 (CCL-5) were determined by enzyme-linked immunosorbent assay. We found that ASP significantly promoted phosphorylation of AMP-activated protein kinase (AMPK), increased activity of adipose triglyceride lipase and hormone-sensitive lipase, and inhibited adipogenesisrelated transcription factors. In addition, ASP inhibited the tumor necrosis factor-α (TNF-α)-induced cell inflammatory response via downregulation of MCP-1 and CCL-5 secretion. This study suggests that ASP regulates lipolysis through activation of AMPK, reduced adipogenesis, and suppresses proinflammatory cytokines in adipocytes.

      • KCI등재

        A retrospective analysis of 20-year data of the surgical management of ulcerative colitis patients in Taiwan: a study of Taiwan Society of Inflammatory Bowel Disease

        ( Chun-chi Lin ),( Shu-chen Wei ),( Been-ren Lin ),( Wen-sy-tsai ),( Jinn-shiun Chen ),( Tzu-chi Hsu ),( Wei-chen Lin ),( Tien-yu Huang ),( Te-hsin Chao ),( Hung-hsin Lin ),( Jau-min Wong ),( Jen-kou 대한장연구학회 2016 Intestinal Research Vol.14 No.3

        Background/Aims: With the recent progress in medical treatment, surgery still plays a necessary and important role in treating ulcerative colitis (UC) patients. In this study, we analyzed the surgical results and outcomes of UC in Taiwan in the recent 20 years, via a multi-center study through the collaboration of Taiwan Society of IBD. Methods: A retrospective analysis of surgery data of UC patients from January 1, 1995, through December 31, 2014, in 6 Taiwan major medical centers was conducted. The patients’ demographic data, indications for surgery, and outcome details were recorded and analyzed. Results: The data of 87 UC patients who received surgical treatment were recorded. The median post-operative follow-up duration was 51.1 months and ranged from 0.4 to 300 months. The mean age at UC diagnosis was 45.3±16.0 years and that at operation was 48.5±15.2 years. The 3 leading indications for surgical intervention were uncontrolled bleeding (16.1%), perforation (13.8%), and intractability (12.6%). In total, 27.6% of surgeries were performed in an emergency setting. Total or subtotal colectomy with rectal preservation (41.4%) was the most common operation. There were 6 mortalities, all due to sepsis. Emergency operation and low pre-operative albumin level were significantly associated with poor survival (P =0.013 and 0.034, respectively). Conclusions: In the past 20 years, there was no significant change in the indications for surgery in UC patients. Emergency surgeries and low pre-operative albumin level were associated with poor survival. Therefore, an optimal timing of elective surgery for people with poorly controlled UC is paramount.

      • KCI등재

        Genotype­specific methylation of HPV in cervical intraepithelial neoplasia

        Yaw-Wen Hsu,Rui-Lan Huang,Po-Hsuan Su,Yu-Chih Chen,Hui-Chen Wang,Chi-Chun Liao,Hung-Cheng Lai 대한부인종양학회 2017 Journal of Gynecologic Oncology Vol.28 No.4

        Objective: Hypermethylation of human papillomavirus (HPV) and host genes has beenreported in cervical cancer. However, the degree of methylation of different HPV typesrelative to the severity of the cervical lesions remains controversial. Studies of the degree ofmethylation associated with the host gene and the HPV genome to the severity of cervicallesions are rare. We examined the association of methylation status between host genes andlate gene 1 (L1) regions of HPV16, 18, 52, and 58 in cervical brushings. Methods: Cervical brushings from 147 HPV-infected patients were obtained. The samplescomprised normal (n=28), cervical intraepithelial neoplasia (CIN) 1 (n=45), CIN2 (n=13), andCIN3/carcinoma in situ (n=61). The methylation status of HPV and host genes was measuredusing bisulfite pyrosequencing and quantitative methylation-specific polymerase chainreaction (PCR). Results: The degree of methylation of L1 in HPV16, 18, and 52 was associated with theseverity of the cervical lesion. In HPV52, C-phosphate-G (CpG) sites 6368m, 6405m, and6443m showed significantly higher methylation in lesions ≥CIN3 (p=0.005, 0.003, and0.026, respectively). Methylation of most HPV types except HPV52 (r<−0.1) was positivelycorrelated with the degree of methylation of host genes including PAX1 and SOX1 (0.4≤r≤0.7). Combining HPV methylation with PAX1 methylation improved the clustering for ≥CIN2. Conclusion: Our study showed that the degree of L1 methylation of HPV16, 18, and 52but not 58 is associated with the severity of cervical lesions. The association betweenHPV methylation and host gene methylation suggests different responses of host cellularepigenetic machinery to different HPV genotypes.

      • Tumors Involving Skin, Soft Tissue and Skeletal Muscle: Benign, Primary Malignant or Metastatic?

        Hsieh, Chi-Ying,Tsai, Huang-Wen,Chang, Chih-Chun,Lin, Tsuo-Wu,Chang, Ke-Chung,Chen, Yo-Shen Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.15

        Background: Metastatic cancer with invasion of skin, soft tissue and skeletal muscle is not common. Examples presenting as soft tissue masses could sometimes lead to misdiagnosis with delayed or inappropriate management. The purpose of current study was to investigate clinical characteristics in the involvement of metastatic cancer. Materials and Methods: A total of 1,097 patients complaining of skin or soft tissue masses and/or lesions were retrospectively reviewed from January 2012 to June 2013. Tumors involving skin, soft tissue and skeletal muscle of head and neck, chest wall, abdominal wall, pelvic region, back, upper and lower extremities were included in the study. Results: Fifty-seven (5.2%) patients were recognized as having malignancies on histopathological examination. The most common involvement of malignancy was basal cell carcinoma, followed by cutaneous squamous cell carcinoma, sarcoma and melanoma. The most common anatomical location in skin and soft tissue malignancies was head and neck (52.6% of the malignancies). Four (0.36%) of the malignant group were identified as metastatic cancer with the primary cancer source from lung, liver and tonsil and the most common site was upper extremities. One of them unexpectedly expired during the operation of metastatic tumor excision at the scalp. Conclusions: Discrimination between benign and malignant soft tissue tumors is crucial. Performance of imaging study could assist in the differential diagnosis and the pre-operative risk evaluation of metastatic tumors involving skin, soft tissue and skeletal muscle.

      • KCI등재

        Effects of coffee intake on airway hypersensitivity and immunomodulation: an in vivo murine study

        Wong Ying-Chi,Hsu Wen-Cheng,Wu Tzee-Chung,Huang Ching-Feng 한국영양학회 2023 Nutrition Research and Practice Vol.17 No.4

        BACKGROUND/OBJECTIVES: Coffee is a complex chemical mixture, with caffeine being the most well-known bioactive substance. The immunomodulator y and anti-inflammator y properties of coffee and caffeine impact health in various aspects, including the respirator y system. The objective is to investigate the effects of coffee and caffeine on air way hyperresponsiveness and allergic reactions, as well as to analyze and compare associated cytokine profiles. MATERIALS/METHODS: BALB/c mice were intraperitoneally sensitized with ovalbumin (OVA) and given OVA inhalation to induce air way hypersensitivity. Two weeks after sensitization, they were intragastrically gavaged with coffee or caffeine, both containing 0.3125 mg caffeine, daily for 4 weeks. Control mice were fed with double-distilled water. Serum OVA- specific antibody levels were measured beforehand and 5 weeks after the first gavage. Air way hyperresponsiveness was detected by whole body plethysmography after gavage. Cytokine levels of bronchoalveolar lavage and cultured splenocytes were analyzed. RESULTS: Coffee effectively suppressed T helper 2-mediated specific antibody response. Air way responsiveness was reduced in mice treated with either coffee or caffeine. Compared to the control, coffee significantly reduced OVA-specific immunoglobulin (Ig) G, IgG1 and IgE antibody responses (P < 0.05). Caffeine also attenuated specific IgG and IgG1 levels, though IgE level was unaffected. Coffee significantly reduced interleukin (IL)-4 and increased IL-10 concentration in spleen cells and bronchoalveolar lavage fluid (P < 0.05). CONCLUSIONS: Coffee effectively attenuated air way hyperresponsiveness and systemic allergic responses induced by OVA food allergen in mice. As a complex composition of bioactive substances, coffee displayed enhanced immunomodulator y and anti-inflammator y effects than caffeine.

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