• Title/Summary/Keyword: small-cell

Search Result 4,123, Processing Time 0.031 seconds

Inhibitory Effects on Human Breast Cancer Cells Migration of Small Black Bean according to the Cooking Methods (조리방법을 달리한 쥐눈이콩의 인체유방암세포 이동성 억제 효과)

  • Shin, Jihun;Joo, Nami
    • The Korean Journal of Food And Nutrition
    • /
    • v.30 no.4
    • /
    • pp.728-734
    • /
    • 2017
  • After being subjected to different cooking methods, small black beans (Rhynchosia nulubilis) were investigated in order to assess the effects of the retained bioactive compounds. Using uncooked, pan broiled, boiled, steamed, and pressure cooked beans, the inhibitory effects of MCF-7 cell migration were evaluated at protein concentrations of 40, 160, and $640{\mu}m/mL$, using the Boyden's chamber assay. All protein concentrations (40, 160, and $640{\mu}m/mL$) of pan broiled beans showed significant reduction (59.83, 32.48, and 21.37%, respectively) in the rate of cell migration to the lower chambers (p-value less than 0.001). Estimated cell migration rates correlated to the exponential decay between experimentally measured cell migration rates and converted samples. The range of estimated cell migration rate for each 100 mg/mL of cooked sample was as follows: pan broiled (21.16%), boiled (22.48%), steamed (22.48%), pressure cooked (29.52%), and uncooked (35.03%) beans. Our study indicated that selective modifications of cooking methods for small black beans, such as pan broiling, ameliorated the inhibitory effects of MCF-7 cell migration. This suggests that optimized cooking methods increase the nutritional contents of the cooked food.

Effect of Double Replacement of L-Pro, D-Pro, D-Leu or Nleu in Hydrophobic Face of Amphipathic α-Helical Model Antimicrobial Peptide on Structure, Cell Selectivity and Mechanism of Action

  • Shin, Song Yub
    • Bulletin of the Korean Chemical Society
    • /
    • v.35 no.11
    • /
    • pp.3267-3274
    • /
    • 2014
  • In order to investigate the effects of the double replacement of $\small{L}$-Pro, $\small{D}$-Pro, $\small{D}$-Leu or Nleu (the peptoid residue for Leu) in the hydrophobic face (positions 9 and 13) of amphipathic ${\alpha}$-helical non-cell-selective antimicrobial peptide $L_8K_9W_1$ on the structure, cell selectivity and mechanism of action, we synthesized a series of $L_8K_9W_1$ analogs with double replacement of $\small{L}$-Pro, $\small{D}$-Pro, $\small{D}$-Leu or Nleu in the hydrophobic face of $L_8K_9W_1$. In this study, we have confirmed that the double replacement of $\small{L}$-Pro, $\small{D}$-Pro, or Nleu in the hydrophobic face of $L_8K_9W_1$ let to a great increase in the selectivity toward bacterial cells and a complete destruction of ${\alpha}$-helical structure. Interestingly, $L_8K_9W_1$-$\small{L}$-Pro, $L_8K_9W_1$-$\small{D}$-Pro and $L_8K_9W_1$-Nleu preferentially interacted with negatively charged phospholipids, but unlike $L_8K_9W_1$ and $L_8K_9W_1$-$\small{D}$-Leu, they did not disrupt the integrity of lipid bilayers and depolarize the bacterial cytoplasmic membrane. These results suggested that the mode of action of $L_8K_9W_1$-$\small{L}$-Pro, $L_8K_9W_1$-$\small{D}$-Pro and $L_8K_9W_1$-Nleu involves the intracellular target other than the bacterial membrane. In particular, $L_8K_9W_1$-$\small{L}$-Pro, $L_8K_9W_1$-$\small{D}$-Pro and $L_8K_9W_1$-Nleu had powerful antimicrobial activity (MIC range, 1 to $4{\mu}M$) against methicillin-resistant Staphylococcus aureus (MRSA) and multidrug-resistant Pseudomonas aeruginosa (MDRPA). Taken together, our results suggested that $L_8K_9W_1$-$\small{L}$-Pro, $L_8K_9W_1$-$\small{D}$-Pro and $L_8K_9W_1$-Nleu with great cell selectivity may be promising candidates for novel therapeutic agents, complementing conventional antibiotic therapies to combat pathogenic microorganisms.

Immunohistochemical Staining of Insulin-like Growth Factor-1 in Human Lung Cancer Cells (폐암의 조직학적 형태에 따른 인슐린양 성장인자-1의 면역조직학적 염색의 비교)

  • Park, Ji-Hyun;Kang, Myoung-Jae;Lee, Heung-Bum;Lee, Yong-Chul;Rhee, Yang-Kuen
    • Tuberculosis and Respiratory Diseases
    • /
    • v.48 no.3
    • /
    • pp.324-330
    • /
    • 2000
  • Objective : Lung cancer arises after a series of morphological changes, which take several years to progress from normal epithelium to invasive cancer. Multiple molecular changes and growth factor production have been documented in lung cancers, both small cell and non-small cell types. Insulin-like growth factors(IGFs) are important mitogenic and anabolic peptides, both in vivo and in vitro, and are thought to be significant autocrine-paracrine factors involved in normal and malignant cell proliferation. In this study, the degree of expression of IGF-1 on the immunohistochemical staining in human non-small cell lung cancer(NSCLC) cells and small cell lung cancer (SCLC) cells were investigated. Methods : Immunohistochemical staining for IGF-1 was performed in 15 cases of small cell carcinoma, 15 cases of squamous cell carcinoma, 15 cases of adenocarcinoma, and 12 cases of bronchoalveolar carcinoma. Results : The expression of IGF-1 on the immunohistochemical staining significantly increased in NSCLC cells than in SCLC cells. Conclusion : These results suggest the expression of IGF-1 in human lung cancer cells. The immunohistochemical staining of IGF-1 in lung cancer cell lines may assist in the differentiation of NSCLC and SCLC.

  • PDF

Small-cell Resource Partitioning Allocation for Machine-Type Communications in 5G HetNets (5G 이기종 네트워크 환경에서 머신타입통신을 위한 스몰셀 자원 분리 할당 방법)

  • Ilhak Ban;Se-Jin Kim
    • Journal of Internet Computing and Services
    • /
    • v.24 no.5
    • /
    • pp.1-7
    • /
    • 2023
  • This paper proposes a small cell resource partitioning allocation method to solve interference to machine type communication devices (MTCD) and improve performance in 5G heterogeneous networks (HetNet) where macro base station (MBS) and many small cell base stations (SBS) are overlaid. In the 5G HetNet, since various types of MTCDs generate data traffic, the load on the MBS increases. Therefore, in order to reduce the MBS load, a cell range expansion (CRE) method is applied in which a bias value is added to the received signal strength from the SBS and MTCDs satisfying the condition is connected to the SBS. More MTCDs connecting to the SBS through the CRE will reduce the load on the MBS, but performance of MTCDs will degrade due to interference, so a method to solve this problem is needed. The proposed small cell resource partitioning allocation method allocates resources with less interference from the MBS to mitigate interference of MTCDs newly added in the SBS with CRE, and improve the overall MTCD performace using separating resources according to the performance of existing MTCDs in the SBS. Through simulation results, the proposed small cell resource partitioning allocation method shows performance improvement of 21% and 126% in MTCDs capacity connected to MBS and SBS respectively, compared to the existing resource allocation methods.

Two Cases of Primary Small Cell Carcinomas of the Stomach (원발성 위 소세포암 2예)

  • Seo Yun-Seock;Park Do Joong;Lee Hyuk-Joon;Cho Soo Youn;Kim Woo Ho;Park Seong Hoe;Yang Han-Kwang;Lee Kuhn Uk;Choe Kuk Jin
    • Journal of Gastric Cancer
    • /
    • v.4 no.3
    • /
    • pp.186-191
    • /
    • 2004
  • Primary small-cell carcinomas of the stomach are rare and aggressive malignancies with poor survival rates. Preoperative diagnosis is difficult and a standard treatment is not yet established. We have recently experienced two cases of a primary small-cell carcinoma of the stomach. The first case was a 65-year-old man with epigastric soreness. Endoscopic biopsy showed an adenocarcinoma. He underwent a radical subtotal gastrectomy with D2 lymph-node dissection. Pathology revealed a collision tumor of a smallcell carcinoma and an adenocarcinoma with submucosal invasion and with metastasis in 20 out of 48 lymph nodes (T1N3M0). The second case was a 64-year-old man with epigastric soreness. Endoscopic biopsy revealed a small-cell carcinoma. There was no evidence of a primary tumor in the lung. A radical subtotal gastrectomy with D2 lymph-node dissection was performed. Pathology showed a pure smallcell carcinoma with proper muscle invasion and with metastasis in 1 out of 36 lymph nodes (T2aN1M0).

  • PDF

A Case of Intramedullary Spinal Cord Metastasis From Non-small Cell Lung Cancer (비소세포 폐암의 척수수질내 전이 1예)

  • Park, Sang-Woo;Wi, Hyung-Soo;Kim, Hoon-Soo;Cho, Jae-Hwa;Lee, Hong-Lyeol;Loh, John-Kyu;Ryu, Jeong-Seon
    • Tuberculosis and Respiratory Diseases
    • /
    • v.52 no.6
    • /
    • pp.627-632
    • /
    • 2002
  • Intramedullary spinal cord metastasis (ISCM) has rarely been reported in patients with carcinomas. In about half the ISCM reported the primary origins are lung cancer, with small cell lung cancer responsible for almost all reported cases. Thus, ISCM from small cell lung cancer is relatively well documented, but ISCM from non-small cell lung cancer is rarely diagnosed prior to the patients' demise, so very little data about such patients is available. Spine MRI is the most sensitive technique for diagnosing ISCM. ISCM are now being encountered with increasing frequency due to the increasing survival rates of lung cancer patients, and the development of new imaging technique. We reported a case of an ISCM from non-small cell lung cancer with a brief review of the literature.

Improved Antitumor Efficacy of Hyaluronic Acid-Complexed Paclitaxel Nanoemulsions in Treating Non-Small Cell Lung Cancer

  • Kim, Joo-Eun;Park, Young-Joon
    • Biomolecules & Therapeutics
    • /
    • v.25 no.4
    • /
    • pp.411-416
    • /
    • 2017
  • Paclitaxel (PTX) is a effectively chemotherapeutic agent which is extensively able to treat the non-small cell lung, pancreatic, breast and other cancers. But it is a practically insoluble drug with water solubility less than $1{\mu}g/mL$, which restricts its therapeutic application. To overcome the problem, hyaluronic acid-complexed paclitaxel nanoemulsions (HPNs) were prepared by ionic complexation of paclitaxel (PTX) nanoemulsions and hyaluronic acid (HA) to specifically target non-small cell lung cancer. HPNs were composed of ${\small{DL}}-{\alpha}$-tocopheryl acetate, soybean oil, polysorbate 80, ferric chloride, and HA and fabricated by high-pressure homogenization. The HPNs were $85.2{\pm}7.55nm$ in diameter and had a zeta potential of $-35.7{\pm}0.25mV$. The encapsulation efficiency was almost 100%, and the PTX content was 3.0 mg/mL. We assessed the in vivo antitumor efficacy of the HPNs by measuring changes in tumor volume and body weight in nude mice transplanted with CD44-overexpressing NCI-H460 xenografts and treated with a bolus dose of saline, $Taxol^{(R)}$, PTX nanoemulsions (PNs), or HPNs at a dose of 25 mg/kg. Suppression of cancer cell growth was higher in the PN- and HPN-treated groups than in the $Taxol^{(R)}$ group. In particular, HPN treatment dramatically inhibited tumor growth, likely because of the specific tumor-targeting affinity of HA for CD44-overexpressed cancer cells. The loss of body weight and organ weight did not vary significantly between the groups. It is suggest that HPNs should be used to effective nanocarrier system for targeting delivery of non-small cell lung cancer overexpressing CD44 and high solubilization of poorly soluble drug.

Season of Diagnosis and Survival of Advanced Lung Cancer Cases - Any Correlation?

  • Oguz, Arzu;Unal, Dilek;Kurtul, Neslihan;Aykas, Fatma;Mutlu, Hasan;Karagoz, Hatice;Cetinkaya, Ali
    • Asian Pacific Journal of Cancer Prevention
    • /
    • v.14 no.7
    • /
    • pp.4325-4328
    • /
    • 2013
  • Introduction: The influence of season at diagnosis on cancer survival has been an intriguing issue for many years. Most studies have shown a possible correlation in between the seasonality and some cancer type survival. With short expected survival, lung cancer is an arena that still is in need of new prognostic factors and models. We aimed to investigate the effect of season of diagnosis on 3 months, 1 and 2 years survival rates and overall survival of non small cell lung cancer patients. Materials and Methods: The files of non small cell lung cancer patients that were stages IIIB and IV at diagnosis were reviewed retrospectively. According to diagnosis date, the patients were grouped into 4 season groups, autumn, winter, spring and summer. Results: A total of 279 advanced non small cell lung cancer patients' files were reviewed. Median overall survival was 15 months in the entire population. Overall 3 months, 1 and 2 years survival rates were 91.0%, 58.2% and 31.2% respectively. The season of diagnosis was significantly correlated with 3 months survival rates, being diagnosed in spring being associated with better survival. Also the season was significantly correlated with T stage of the disease. For 1 and 2 years survival rates and overall survival, the season of diagnosis was not significantly correlated. There was no correlation detected between season and overall survivals according to histological subtypes of non small cell lung cancer. Conclusion: As a new finding in advanced non small cell lung cancer patients, it can be concluded that being diagnosed in spring can be a favorable prognostic factor for short term survival.

A Case Study of Small-Cell Lung Cancer with Multiple Brain Metastases Patient who Showed Improvement of Delirium and Performance Status (섬망 증세와 신체 활동도에 호전을 보인 뇌전이가 있는 소세포폐암 환자 1례)

  • Park, So-Ra;Lee, Soo-Min;Choi, Seong-Heon;Jung, Yee-Hong;Lee, Soo-Kyung
    • Journal of Sasang Constitutional Medicine
    • /
    • v.26 no.4
    • /
    • pp.400-408
    • /
    • 2014
  • Objectives The aim of this study was to report the improvement of delirium and performance status in the small-cell lung cancer patient who had multiple brain metastases and pericardial effusion after Sasang constitutional treatment. Methods We retrospectively reviewed the medical records, medical laboratory and image scans of 71-year-old male patient diagnosed as small-cell lung cancer. Results The small-cell lung cancer with multiple brain metastases patient sometimes talked deliriously even after the whole brain radiation therapy. During the hospitalization period, he showed delirium. We treated him with Gihwangbaekho-tang and Dojeokgangki-tang as a main therapy. After treatment, he didn't show delirium and performance status was improved. Conclusions A small-cell lung cancer with multiple brain metastases patient showed the improvement of symptoms (delirium, poor performance status, constipation and poor oral intake) with the treatment of Gihwangbaekho-tang, Yanggyuksanhwa-tang and Dojeokgangki-tang.

A Study of the Prognostic Factors in Resected Stage I Non-Small Cell Lung Cancer (제1병기 비소세포폐암 절제례의 예후인자에 대한 연구)

  • 김창수;천수봉;조성래
    • Journal of Chest Surgery
    • /
    • v.31 no.10
    • /
    • pp.973-981
    • /
    • 1998
  • Background: About 30% to 40% of the patients with pathologic stage I non-small cell lung cancer (NSCLC) die within 5 years after complete resection. The identification of poor prognostic factors and the application of additional treatment are very important to improve the survival rate in resected stage I NSCLC. Materials and methods: Sixty-eight(68) patients who had been diagnosed postoperatively between Janury 1989 and December 1995 as having stage I non-small cell lung cancer according to the TNM classification were studied. The postoperative 5-year survival rate was calculated with the Kaplan-Meier method, and clinico- histopathologic factors including age, sex, operative method, type of tumor cell, T factor, grade of the differentiation in a squamous cell carcinoma, invasion of blood vessel and expression of the nm23-H1 protein were investigated and analyzed. Results: The median survival of the entire group of patients was 58$\pm$3 months, with a 5-year survival of 58.9%. In univariate analysis, invasion of blood vessel and poor differentiation of the tumor cell in a squamous cell carcinoma significantly worsened the survival. In multivariate analysis, invasion of blood vessel and grade of the differentiation of the tumor cells in a squamous cell carcinoma remained independent prognostic factors. High expression of the nm23-H1 protein was related to a high postoperative 5-year survival in comparision with low expression of the nm23-H1 pretein (73.0% vs 50.7%), but there was no statistical significance. Conclusions: These results highlight the negative prognostic value of poor differentiation of tumor cells in a squamous cell carcinoma and invasion of blood vessel in stage I non-small cell lung cancer. Also, further studies are necessary to be determined prognostic value of the T factor and expression of the nm23 protein in non-small cell lung cancer.

  • PDF