The primary mucosa-associated lymphoid tissue(MALT) lymphoma of the lung is a rare low grade B cell-lymphoma arising from bronchus-associated lymphoid tissue(BALT) which had been regarded as pseudolymphoma. It has the characteristic histologic findings with monoclonal B cells of centrocyte-like lymphoid cells and a lymphoepithelial lesion. Clinically it shows an indolent clinical course and much more favorable prognosis than lymphoma of other site. We report 3 cases of the pulmonary malignant lymphoma of BALT, which was confirmed by lung biopsy, immunohistochemistry and PCR assay.
Kim, Kyung Ah;Moon, Chang Won;Song, Da-Hyun;Kim, Sang Jun
Clinical Pain
/
v.15
no.2
/
pp.92-96
/
2016
Objective: High frequency wave has been used in cancer treatment and cosmetic area but not in musculoskeletal pain yet. The purpose of this study is to evaluate temperature distribution according to depth and confirm safety of high frequency wave through animal study. Method: High frequency wave was applied to the posterior limb of 9 Sprague-Dawley rats for 20 minutes (experimental group) and no wave was used in the same number of rats for control group. Tissue temperature was measured from skin surface to 1 cm depth (surface, 1 mm, 5 mm, and 1 cm) for 5 seconds. Results: In the experimental group, temperature was elevated 3.2℃ at skin surface, 2.87℃ at 1 mm, 2.25℃ in 5 mm, and 1.74℃ in 1 cm depth. These were significantly different from those in the control group (p<0.001). There was no bulla or redness in the skin after high frequency wave stimulation and neither change of myocytes nor collagen degeneration was found in the tissue histology. There was no apoptosis in the skin surface and muscle layer in TUNEL assay. Conclusion: High frequency wave elevated tissue temperature from the skin to muscle layer without both histologic change and apoptosis.
Background : Smoking and high-risk occupation have been known to be the risk factors of lung cancer. The carcinogen-metabolizing enzymes in human body such as glutathione S-transferase M1, T1 and N-acetyltransferase 1 have also been regarded as risk factors in many cancers, because the activities of those enzymes play a role in metabolizing the carcinogen. A case-control study was conducted to evaluate the genetic polymorphism of GSTM1, T1 and NAT1 in lung carcinogenesis in Korean men. Methods : The histologically proven lung cancer cases were recruited from Seoul National University Hospital. The patients of more than 40-year-old with the nonmalignant urinary tract diseases were recruited as controls from the same hospitals. The informations of demographical characteristics and smoking were obtained by interview or chart review and the genetic polymorphisms of GSTM1, T1 and NAT1 were determined by PCR-based assay. The statistical analyses were performed by linear logistic regression. Results : The number of case-control was 118 and 150, respectively. The smoking history was significantly higher in the lung cancer patients than the controls. The prevalence of GSTM1 null-type was statistically higher(OR=2.25 ; 95% CI=1.12-4.51) in squamous cell carcinoma than other genotypes, but other histologic types were not The prevalence of GSTT1 null-type were not statistically higher than other genotypes in all histologic types. The fast acetylator of NAT1 was more prevalent than normal(OR=2.13 ; 95% CI=1.04-4.40) in all lung cancer patients. Conclusion : The null-type of GSTM1 and fast acetylator of NAT1 are associated with development of lung cancer in Korean men.
Purpose : In order to understand in vivo radiation damage modifying of bFGF on jejunal mucosa, bone marrow and the effect of bFGF on the growth of transplanted mouse sarcoma 180 tumor in mice. Materials and Methods : Mice were treated with $6\;{\mu}g$ of bFGF at 24 hours and 4 hours before exposing to 600 cGy, 800 cGy and 1,000 cGy total body irradiation (TBI), and then exposed to 3,000 cGy local radiation therapy on the tumor bearing thigh. Survival and tumor growth curve were plotted in radiation alone group and combined group of bFGF and irradiation (RT). Histologic examination was performed in another experimental group. Experimental groups consisted of normal control, tumor control, RT (radiation therapy) alone, $6\;{\mu}g$ bFGF alone, combined group of $3\;{\mu}g$ bFGF and irradiation (RT), combined group of $6\;{\mu}g$ bFGF and irradiation (RT). Histologic examination was peformed with H-E staining in marrow, jejunal mucosa, lung and sarcoma 180 bearing tumor. Radiation induced apoptosis was determined in each group with the DNA terminal transferase nick-end labeling method ($ApopTag^{\circledR}$ S7100-kit, Intergen Co.) Results : The results were as follows 1) $6\;{\mu}g$ bFGF given before TBI significantly improved the survival of lethally irradiated mice. bFGF would protect against lethal bone marrow syndrome. 2) $6\;{\mu}g$ bFGF treated group showed a significant higher crypt depth and microvilli length than RT alone group (p<0.05). 3) The bone marrow of bFGF treated group showed less hypocellularity than radiation alone group on day 7 and 14 after TBI (p<0.05), and this protective effect was more evident in $6\;{\mu}g$ bFGF treated group than that of $3\;{\mu}g$ bFGF treated group. 4) bFGF protected against early radiation induced apoptosis in intestinal crypt cell but might have had no antiapoptotic effect in bone marrow stem cell and pulmonary endothelial cells. 5) There was no significant differences in tumor growth rate between tumor control and bFGF alone groups (p>0.05). 6) There were no significant differences in histopathologic findings of lung and mouse sarcoma 180 tumor between radiation alone group and bFGF treated group. Conclusions : Our results suggest that bFGF protects small bowel and bone marrow from acute radiation damage without promoting the inoculated tumor growth in C3H mice. Improved recovery of early responding normal tissue and reduced number of radiation induced apoptosis may be possible mechanism of radioprotective effect of bFGF.
Purpose: We have previously reported that tetra-cell adhesion molecule (T-CAM) markedly enhanced the differentiation of osteoblast-like cells grown on anorganic bone mineral (ABM). T-CAM comprises recombinant peptides containing the Arg- Gly-Asp (RGD) sequence in the tenth type III domain, Pro-His-Ser-Arg-Asn (PHSRN) sequence in the ninth type III domain of fibronectin (FN), and the Glu-Pro-Asp-Ilu-Met (EPDIM) and Tyr-His (YH) sequence in the fourth fas-1 domain of ${\beta}$ig-h3. Therefore, the purpose of this study was to evaluate the cellular activity of osteoblast-like cells and the new bone formation on ABM coated with T-CAM, while comparing the results with those of synthetic cell binding peptide (PepGen P-15). Methods: To analyze the cell viability, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay was performed, andto analyze gene expression, northernblot was performed. Mineral nodule formations were evaluated using alizarin red stain. The new bone formations of each group were evaluated using histologic observation and histomorphometrc analysis. Results: Expression of alkaline phosphatase mRNA was similar in all groups on days 10 and 20. The highest expression of osteopontin mRNA was observed in the group cultured with ABM/P-15, followed by those with ABM/T-CAM and ABM on days 20 and 30. Little difference was seen in the level of expression of collagen type I mRNA on the ABM, ABM/T-CAM, and ABM/P-15 cultured on day 20. There were similar growth and proliferation patterns for the ABM/T-CAM and ABM/P-15. The halo of red stain consistent with $Ca^{2+}$ deposition was wider and denser around ABM/T-CAM and ABM/P-15 particles than around the ABM particles. The ABM/T-CAM group seemed to have bone forming bioactivity similar to that of ABM/P-15. A complete bony bridge was seen in two thirds of the defects in the ABM/T-CAM and ABM/P-15 groups. Conclusions: ABM/T-CAM, which seemed to have bone forming bioactivity similar to ABM/P-15, was considered to serve as effective tissue-engineered bone graft material.
Aim of the study: An alternative source of adult stem cells that could be obtained in large quantities, under local anesthesia, with minimal discomfort would be advantageous. Adipose tissue could be processed to obtain a fibroblast-like population of cells or adipose tissue-derived stromal cells (ATSCs). This study was performed to confirm the availability of ATSCs in bone tissue engineering. Materials amp; Methods: In this study, adipose tissue-derived mesenchymal stem cell was extracted from the liposuctioned abdominal fat of 24-old human and cultivated, and the stem cell surface markers of CD 105 and SCF-R were confirmed by immunofluorescent staining. The proliferation of bone marrow mesenchymal stem cell and ATSCs were compared, and evaluated the osteogenic differentiation of ATSCs in a specific osteogenic induction medium. Osteogenic differentiation was assessed by von Kossa and alkaline phosphatase staining. Expression of osteocyte specific BMP-2, ALP, Cbfa-1, Osteopontin and osteocalcin were confirmed by RT-PCR. With differentiation of ATSCs, calcium concentration was assayed, and osteocalcin was evaluated by ELISA (Enzyme-linked immunosorbant assay). The bone formation by 5-week implantation of HA/TCP block loaded with bone marrow mesenchymal stem cells and ATSCs in the subcutaneous pocket of nude mouse was evaluated by histologic analysis. Results: ATSCs incubated in the osteogenic medium were stained positively for von Kossa and alkaline phosphatase staining. Expression of osteocyte specific genes was also detected. ATSCs could be easily identified through fluorescence microscopy, and bone formation in vivo was confirmed by using ATSC-loaded HA/TCP scaffold. Conclusions: The present results show that ATSCs have an ability to differentiate into osteoblasts and formed bone in vitro and in vivo. So ATSCs may be an ideal source for further experiments on stem cell biology and bone tissue engineering.
High risk human papillomavirus (HR-HPV) is major risk factor for uterine cervical cancer. There are approximately 15 types of HR-HPV. Liquid based cytology samples (116 samples) with high grade cervical lesions belonging to cervical intraepithelial neoplasia (CIN) 2, CIN 3, carcinoma in situ (CIS) and squamous cell carcinoma (SCC) were used after histologic confirmation. HR-HPV genotype assay was conducted using DNA chips. The HR-HPV infection rate was 81.9% with SCC samples showing the highest HR-HPV infection rate of 31%. CIN 3, CIS and CIN 2 showed infection rates of 25%, 16.4% and 9.5%, respectively. According to age with HR HPV infection rate, the 30~39 years-old group showed the highest infection rate by 92.3%. According to distribution with HR HPV genotyping, HPV 16 showed the highest infection rate by 42.3% whereas HPV 33 and HPV 58 showed infection rates of 11.7% and 10.8%, respectively. HPV 18 which is the second most common infected HPV genotype in the world showed 3.6%. Of the three most common oncogenic HR-HPV genotypes in CIN 2, we detected HPV 16, 35, 58; CIN 3 was HPV 16, 33, 58; CIS was HPV 16, 58, 33 (35/52); and SCC was HPV 16, 33, and 18 (31/52/58). Among the HPV 18, CIN 2, CIN 3, CIS and SCC showed 0.9%, 0.9%, 0% and 1.8%, respectively. The most often used preventive vaccines for cervical cancers use HPV 16 and HPV 18 as targets. However, results derived from this study suggest that a preventive vaccine against HPV 16 and HPV 18 would not be optimal for populations in this study.
Kim, Jin-Sung;Yoon, Sang-Hyub;Ryu, Bong-Ha;Ryu, Ki-Won;Jung, Myung-Chai
The Journal of Internal Korean Medicine
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v.25
no.2
/
pp.202-213
/
2004
Object : Objective: This study was conducted to investigate the anti-cancer effects of Mylabris phalerata (반모) in some kinds of cancer cells. Materials and Methods: Some kinds of cancer cells lines were treated. We used nine kinds of cancer cell lines, such as stomach cancer cells (Kato), lung cancer cells (Calu-1, NCI-H 1395), urinary bladder cancer cells (HS789T), bone cancer cells (Saos-2), brain cancer cells (SK-N-MC), liver cancer cells (Hep-G2), skin cancer cells (Mo-1) and prostate cancer cells (PC-3) with the water decoction of Mylabris phalerata. The histological changes of all cell lines in the media (RPMI-1640) containing the decoction of Mylabris phalerata were observed and we examined cell death assay by trypan blue exclusion testing was examined. Finally, the change of mitochondrial membrane potential was measurd and the inhibitory effect of Mylabris phalerata on cell increase was examined by analyzing the cell cycle. Results: In histologic change all cancer cell lines showed withdrawn and floating appearance that is typical in cellular impairment. Most of the cell lines showed over 50% death rate after 24 hours in trypan blue exclusion tests. Especially the stomach, urinary bladder. brain and liver cell lines showed over 30% death rate after 12 hours. All cell lines treated with Mylabris phalerata were less stained than the control group and the mitochondrial membrane potential in the Mylabris phalerata treated cell lines was markedly lower than that in the control group. The measurement of DNA quantity in all cell lines showed the disappearance of the peak and the thickened left axis, which suggests that all cellular DNA degraded. Conclusion: Mylabris phalerata had cytotoxicity on various kinds of cancer cell lines and the mechanism of that was the impairment of mitochondria by the breakdown of the mitochondrial cell membrane. We propose that this is in part attributable to the destruction of DNA in cancer cells.
An area of current research is investigating the app1ication of human mesenchymal stem cells or hMSCs as a cell-based regenerative therapy. In order to achieve effective bone regeneration, appropriate matrices functioning as cell-carriers must be identified and optimized in terms of function, efficacy and biocompatibility. Two methods of approaching optimization of matrices are to facilitate adhesion of the donor hMSCs and furthermore to facilitate recruitment of host progenitor cells to osteoblastic differentiation. Pleiotrophin is an extracellular matrix protein that was first identified in developing rat brains and believed to be associated with developing neuronal pathways. A recent publication by Imai and colleagues demonstrated that transgenic mice with upregulated pleiotrophin expression developed a greater volume of cortical as well as cancellous bone. The proposed mechanism of action of pleiotrophin is demonstrated here. Through either environmental stresses and/or intracellular regulation, there is an increase in pleiotrophin production. The pleiotrophin is released extracellularly into areas requiring bone deposition. A receptor-mediated process recruits host osteoprogenitor cells into these areas. Therefore, the aim of our study was to investigate the osteoconductive properties of pleiotrophin. We wanted to determine if pleiotrophin coating facilitates cellular adhesion and furthermore if this has any effect on hMSCs derived bone formation in an animal model. The results showed a dose dependent response of cellular adhesion in fibronectin samples, and cellular adhesion was facilitated with increasing pleiotrophin concentrations. Histologic findings taken after 5 weeks implantation in SCID mouse showed no presence of bone formation with only a dense fibrous connective tissue. Possible explanations for the results of the osteogenesis assay include inappropriate cell loading.
Objectives : The aim of the current study was to investigate the effects of Sargassum (Sargassum pallidum (TURN.) C. AG.; SP) on the experimental colitis induced by 2,4,6-trinitrobenzene sulfonic acid (TNBS) in mice. Methods : ICR mice were divided into 7 groups (NOR, CON, $SS50\times5$, $SP20\times3$, $SP50\times3$, $SP20\times5$, $SP50\times5$). TNBS processing was intrarectally applied to all experimental groups on the 3rd experiment day, except the normal group (NOR). For investigating the prophylactic effect, SP at doses of 20 mg/kg ($SP20\times5$) and 50 mg/kg ($SP50\times5$) were orally administered for 5 days. The SP at doses of 20 mg/kg ($SP20\times3$) and 50 mg/kg ($SP50\times3$) were orally administered for 3 days after the colitis induction in order to check the effect of treatment. As a positive control group, sulfasalazine 50 mg/kg ($SS50\times5$) was administrated. Macroscopic findings of epithelial tissue on mice were measured by colon length and macroscopic score. Histologic findings were also checked by crypt cell, epithelial cell, inflammatory cell and edema of submucosa. We measured the ability of SP to inhibit lipid peroxidation and myeloperoxidase activity. We also measured levels of the inflammatory markers, interleukin (IL)-$1\beta$ and cyclooxygenase-2 (COX-2), its transcription factor activation, phospho-NF-${\kappa}B$ (pp65), in the colon by enzyme-linked immunosorbent assay and immunoblot analysis. We measured activation of fecal bacterial enzyme, $\beta$-glucuronidase and degradation activation of fecal glycosaminoglycan (GAG), and hyaluronic acid. Results : Oral administration of SP on mice inhibited TNBS-induced colon shortening and myeloperoxidase activity in the colon of mice as well as IL-$1\beta$ and COX-2 expression. SP also inhibited TNBS-induced lipid peroxidation and pp65 activation in the colon of mice. SP inhibited $\beta$-glucuronidase activation and fecal hyaluronic acid degradation activation as well. Conclusions : SP could be a possible herbal candidate and preventive prebiotic agent for treating inflammatory bowel disease (IBD). Further experiments to differentiate effects of SP on IBD, such as other solutions and extracting times, might be promising.
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