• Title/Summary/Keyword: Hematologic

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Revisiting Use of Growth Factors in Myelodysplastic Syndromes

  • Newman, Kam;Maness-Harris, Lori;El-Hemaidi, Ihab;Akhtari, Mojtaba
    • Asian Pacific Journal of Cancer Prevention
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    • v.13 no.4
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    • pp.1081-1091
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    • 2012
  • Myelodysplastic syndromes (MDS) represent a heterogeneous group of clonal hematologic neoplasms characterized by morphologic dysplasia, aberrant hematopoiesis and peripheral blood refractory cytopenias. MDS is recognized to be associated with an increased risk of symptomatic anemia, infectious complications and bleeding diathesis, as well as a risk of progression to acute myeloid leukemia, particularly in patients with a high IPSS score. The advent of use of hematopoietic growth factors such as granulocyte colony-stimulating factor (G-CSF) and recombinant erythropoietin (EPO) has improved symptoms in MDS patients in addition to some data that suggest there might be an improvement in survival. G-CSF is an effective therapeutic option in MDS patients, and it should be considered for the management of refractory symptomatic cytopenias. G-CSF and EPO in combination can improve outcomes in appropriate MDS patients such as those with lower-risk MDS and refractory anemia with ring sideroblasts (RARS). This article reviews use of growth factors for lower-risk MDS patients, and examines the data for G-CSF, EPO and thrombopietic growth factors (TPO) that are available or being developed as therapeutic modalities for this challenging disease.

Gemcitabine for the Treatment of Patients with Osteosarcoma

  • Wei, Mei-Yang;Zhuang, Yan-Feng;Wang, Wan-Ming
    • Asian Pacific Journal of Cancer Prevention
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    • v.15 no.17
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    • pp.7159-7162
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    • 2014
  • Background: Patients with recurrent or refractory osteosarcoma are considered to have a very poor prognosis, and new regimens are needed to improve the prognosis in this setting. Gemcitabine, a nucleoside antimetabolite, is an analog of deoxycytidine which mainly inhibits DNA synthesis through interfering with DNA chain elongation and depleting deoxynucleotide stores, resulting in gemcitabine-induced cell death. Here we performed a systemic analysis to evaluate gemcitabine based chemotherapy as salvage treatment for patients with recurrent or refractory osteosarcoma. Methods: Clinical studies evaluating the impact of gemcitabine based regimens on response and safety for patients with osteosarcoma were identified by using a predefined search strategy. Pooled response rates (RRs) of treatment were calculated. Results: In gemcitabine based regimens, 4 clinical studies which included 66 patients with recurrent or refractory osteosarcoma were considered eligible for inclusion. Systemic analysis suggested that, in all patients, pooled RR was 12.1% (8/66) in gemcitabine based regimens. Major adverse effects were hematologic toxicity, including grade 3 or 4 anemia, leucopenia and thrombocytopenia in gemcitabine based treatment. No treatment related death occurred in gemcitabine based treatment. Conclusion: This systemic analysis suggests that gemcitabine based regimens are associated with mild activity with good tolerability in treating patients with recurrent or refractory osteosarcoma.

Lack of KRAS Gene Mutations in Chronic Myeloid Leukemia in Iran

  • Kooshyar, Mohammad Mahdi;Ayatollahi, Hossein;Keramati, Mohammad Reza;Sadeghian, Mohammad Hadi;Miri, Mohsen;Sheikhi, Maryam
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.11
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    • pp.6653-6656
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    • 2013
  • Background: The single most common proto-oncogene change in human neoplasms is a point mutation in RAS genes. A wide range of variation in frequency of KRAS mutations has been seen in hematologic malignancies. Despite this, RAS roles in leukemogenesis remain unclear. The frequency of KRAS mutations in CML has been reported to be between zero an 10%. Many attempts have been done to develop an anti-RAS drug as a therapeutic target. Materials and Methods: This cross sectional study was performed in Mashhad University of Medical Sciences, Mashhad, Iran from 2010-2012. In 78 CML patients (diagnosed according to WHO 2008 criteria) in chronic or accelerated phases, KRAS mutations in codons 12 and 13 were analyzed using a modified PCR-restriction fragment length polymorphism (RFLP) method. Results: We did not detect any KRAS mutations in this study. Conclusions: KRAS mutations are overall rare in early phase CML and might be secondary events happening late in leukemogenesis cooperating with initial genetic lesions.

Impact of the Copper Transporter Protein 1 (CTR1) Polymorphism on Adverse Events among Advanced Non-Small Cell Lung Cancer Patients Treated with Carboplatin-Gemcitabine Regimen

  • Kumpiro, Siriluk;Sriuranpong, Virote;Areepium, Nutthada
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.9
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    • pp.4391-4394
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    • 2016
  • Background: Platinum-based regimens are effective treatments for advanced non-small cell lung cancer (NSCLC), but the five-year survival rate is still less than 20%. One possible factor appears to be resistance involving polymorphisms in the CTR1 gene which plays an importance role in accumulation of platinum in the cytoplasm. Purpose: To establish both prevalence of CTR1 polymorphism and its impact on treatment related toxicity in Thai advanced NSCLC patients. Materials and Methods: Thirty-two advanced NSCLC participants received carboplatin and gemcitabine during January to June 2016 at King Chulalongkorn Memorial Hospital (KCMH) were recruited for analysis of the CTR1 rs12686377 genotype. These participants were planning to be treated with platinum-based chemotherapy for at least two cycles. Results: Allele frequency of CTR1 polymorphism $G{\rightarrow}T$ was found to be 25%. The results showed that genetic polymorphism at CTR1 rs12686377 was associated with emesis side effects (P = 0.020) and neuropathic symptoms (P = 0.010). In addition, hematologic side effects in terms of anemia also tended to be related to this polymorphism. Conclusions: This is the first study suggesting that polymorphism at CTR1 rs12686377 may be associated with toxicity from platinum-based regimens. Therefore, it could be a factor to aid in treatment decision-making.

Effects of Gamijaungo on the burn mice model and the study of hematologic, pathologic and molecular mechanism (가미자운고(加味紫雲膏)가 mouse의 피부화상 치료에 대한 분자생물학적 효과 및 기전연구)

  • Lee, Jong-Chul;Kim, Gyung-Jun
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.28 no.1
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    • pp.53-67
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    • 2015
  • Objective: The aim of this study was to investigate the wound healing effect of herbal ointment, Gamijaungo, on the burn-induced model. Reports about Gamijaungo on the wound healing effect by local application in mice model or human study have published in the several domestic or internationally, but most are anecdotal and lack solid scientific evidence. Method: We observed the morphologic and histologic changes in the burn-induced mice model. we counted white blood cell and platelet changes. we confirmed VEGF, PI3K and pAkt protein expression by Western blot analysis. Result: In this study, we observed that Gamijaungo showed strong wound healing effects in the morphologic and histologic changes in the burn-induced mice model. Also we found that the significant changes of white blood cell and platelet changes by the treatment of Gamijaungo. In molecular mechanism, we got the strong positive effect by Gamijaungo treatment on angiogenesis, a key process in the formation of the granulation tissue during wound healing. Conclusion: These findings suggest the potential use of Gamijaungo as a therapeutic in thermal burn-induced skin injuries.

Effects of Repeated Halothane Anesthesia on Canine Hematologic and Hematochemical values (개에서 Halothane 반복마취가 혈액학 및 혈액화학치에 미치는 영향)

  • Lee Jeong-Kuk;Kwun Hae-Byeng
    • Journal of Veterinary Clinics
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    • v.11 no.1
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    • pp.407-417
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    • 1994
  • Present experiments were undertaken for the purpose of clarifying the effect of repeated halothane anesthesia on the liver and kidney function. Nine mongrel dogs were divided into three groups. The group one dogs were anesthesized once(control group) and the other two groups twice and trice respectively on 10th day of previous anesthesia experimental groups. Hematological examinations and blood chemical assays were undertaken during the period from one hour to 10 days after the anesthesia. From these experiments fellowing results were obtained; 1. No significant changes of erythrocyte count were recognized in both the control and experimental groups after the halothane anesthesia. 2. The total leukocyte counts of experimental groups showed significant decrease on one hour and subsequent increases after the anesthesia. 3. No significant changes were observed in SGOT, SGPT, ALP, BUN and serum glucose values in both the control and experimental groups. 4. The total serum protein values showed a tendency to decrease on the first hour of halothane anesthesia in both the control and experimental groups. From these results it may be concluded that the repeated halothane anesthesia done 10th day of previous anesthesia do not affect the liver and kidney function in dogs.

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Investigation of canine dirofilariasis and brucellosis in free roaming dogs from public animal shelters in Gwangju area (광주지역 동물보호소내 유기견의 개심장사상충과 개 브루셀라병 감염 실태조사)

  • Koh, Ba-Ra-Da;Na, Ho-Myung;Jang, Mi-Sun;Kim, Ji-Yeon;Park, Seong-Do
    • Korean Journal of Veterinary Service
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    • v.30 no.1
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    • pp.155-164
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    • 2007
  • This study was conducted to investigate the prevalence of canine heartworm infections, canine brucellosis and hematologic values from 153 free roaming dogs in the area of Gwangju city from March to November 2006. Nineteen (12.4%) of 153 samples tested with modified Knott's technique showed positive reaction for microfilariae. Polymerase chain reaction using specific primers for D immitis amplified the expected product from all samples of 19 microfilaremic canine blood samples as determined by the modified Knott's test for microfilariae. The seasonal infection rates of microfilariae were higher in the spring season (10/19, 52.6%) than in the other seasons. The major hematological findings in microfilaremic dogs were mild leukocytosis and mild monocytosis. A total of 100 dogs randomly selected from 153 free roaming dogs were negative for canine brucellosis by serological test using immunochromatographic antibody test kit.

The effects of electroacupuncture and laser at Da-zhui and Shen-shu on hematologic changes and blood concentration of endocrine substances in dogs (대추혈(大椎穴) 및 신유혈(腎兪穴)에 대한 전침 레이저자극이 개의 혈액학적 변화와 내분비물질의 혈중농도에 미치는 영향)

  • Cho, Yong-seong;Bae, Chun-sik
    • Korean Journal of Veterinary Research
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    • v.39 no.5
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    • pp.986-994
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    • 1999
  • This study was carried out (a) to investigate the variations of blood chemistry and (b) to examine the secretion trend of endocrine substances in a dog model after electroacupuncture and laser stimulation at different time period(9 to 11a.m. and 6 to 8p.m.). Two acupuncture points ; Da Zhui(GV-14) and Shen Shu(BL-23) were electroacupunctured for 20 minutes with 2Vol, 20Hz and irradiated for 5 minutes with 8,000Hz. Before stimulation and after a lapse of time(10-minutes, 30-minutes and 60-minutes) all dogs were checked the following parameters ; cortisol, ACTH, RBC, hemoglobin, hematocrit, WBC, Ca, P, SGPT, SGOT and creatinine. The results were as follow : The levels of cortisol and ACTH have been increased 10 minutes after the stimulation of the electroacupuncture and laser. The higher levels of cortisol and ACTH have been decreased to keep the normal levels from 30 minutes after the stimulation of the electroacupuncture and laser. The RBC, hemoglobin, hematocrit and WBC showed the physiological phenomena in the electroacupuncture and laser stimulation. In sero chemical analysis, calcium, phosphate, SGOT, SGPT and creatinine levels were within normal physiological ranges.

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VATS Resection for a Posterior Mediastinal Extramedullary Hematopoietic Mass: Resection of Extramedullary Hematopoiesis (후종격동 종괴로 발견된 골수외 조혈 종괴의 비디오 흉강경 수술을 이용한 절제 1예)

  • Chang, Jee-Won;Maeng, Young-Hee
    • Journal of Chest Surgery
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    • v.43 no.5
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    • pp.542-545
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    • 2010
  • Extramedullary hematopoiesis is a common compensatory mechanism of chronic anemia, but an asymptomatic posterior mediastinal mass is rarely diagnosed as an extramedullary hematopoiesis after surgical resection. The differential from neurogenic tumors is important, but fine needle aspiration biopsy is not recommended because of the difficulty of approach and risk of bleeding. Although diagnosis and treatment can involve resection via thoracotomy, video-assisted thoracic surgery may also be a useful strategy. We performed video-assisted thoracic surgery on a 59-year-old man for posterior mediastinal extramedullary hematopoiesis, with no evidence of recurrence or related hematologic diseases.

The Relationship between Oxidative Stress and Oxidative Markers

  • Park, Shin-Young;Lee, Sang-Pyung
    • Korean Journal of Clinical Laboratory Science
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    • v.46 no.1
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    • pp.31-37
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    • 2014
  • Metabolic syndrome such as, hypertension, diabetes, obesity, dyslipidemia etc are well known lifestyle diseases which threaten a health state. The purpose of this study is to evaluate antioxidant status and reactive oxygen species (ROS) in various stressful conditions. A group of persons (n=28) were enrolled in this study and stress status was evaluated using questionnaire of psychological well-being index (PWI-SF) and hematologic analysis of free oxygen radical defense (FORD), free oxygen radical test (FORT), lipid profiles and serum cortisol level. Analysis was done according to stress index, BMI status and overtime working. Blood samples from diabetics were used for control. Results are as in followings: Higher PWI-SF group showed higher FORT. Obese persons with BMI > $25kg/m^2$ showed statistically lower FORD (p<0.05) and higher FORT level (p<0.01). When compare with diabetics, an overweight group had similar levels in FORD and FORT while a normal body weight group showed quite different with diabetics in FORD (p<0.001). Higher ROS group has higher triglyceride, CRP and insulin levels but lower in FORD and HDL-cholesterol levels. Overtime working at night showed no meaningful result against our expectations. These results suggested that obesity showed most unfavorable correlations in an antioxidant status in various situations.