Development of Secondary Osteosarcoma After TBI and Allogeneic Bone Marrow Transplant: A Case Series of 3 Patients

In this report, we present 3 patients diagnosed with leukemia as young children who received hematopoietic cell transplants with total body irradiation as part of the conditioning regimen, and later went on to develop secondary osteosarcoma.
Source: Journal of Pediatric Hematology Oncology - Category: Hematology Tags: Online Articles: Clinical and Laboratory Observations Source Type: research

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In conclusion, our work indicates that RHPS4-induced telomeric DNA damage promotes overactivation of telomeric recombination in ALT cells, opening new questions on the therapeutic employment of G4 ligands in the treatment of ALT positive tumors.
Source: Genes - Category: Genetics & Stem Cells Authors: Tags: Article Source Type: research
Abstract Chitosan derivatives are widely used as key classes of medicinal compounds owing to their non- toxic and biodegradable properties. So, in this work, to enhance chitosan biological activities, a new synthesis of a series of Schiff base and its metals complexes (Cu(II), Ni(II) and Zn(II)) of chitosan (CS) was prepared. Moreover, their physicochemical properties were characterized by IR, UV-Vis, SEM, melting point, thermo gravimetric analysis (TGA), X-ray diffraction (XRD), elemental analysis and 1H NMR techniques. Elemental analysis data confirmed the formation of chitosan-Schiff base as well as the coordin...
Source: International Journal of Biological Macromolecules - Category: Biochemistry Authors: Tags: Int J Biol Macromol Source Type: research
Abstract Outcomes of treatment for malignant pediatric tumors including leukemia are improving by conventional multimodal treatment with strong chemotherapy, surgical resection, radiotherapy, and bone marrow transplantation. However, patients with advanced neuroblastoma, metastatic Ewing's sarcoma family of tumor (ESFT), and metastatic osteosarcoma continue to have an extremely poor prognosis. Therefore novel therapeutic strategies are urgently needed to improve their survival. Apoptotic cell death is a key mechanism for normal cellular homeostasis. Intact apoptotic mechanisms are pivotal for embryonic development...
Source: Yakugaku Zasshi : Journal of the Pharmaceutical Society of Japan - Category: Drugs & Pharmacology Authors: Tags: Yakugaku Zasshi Source Type: research
CONCLUSIONS: The incidence rates of several childhood cancer types steadily increased during 1983-2015. Although the reasons for these rises are largely unknown, our findings provide a foundation for health service planning for meeting the needs of children who will be diagnosed with cancer until 2035. PMID: 31876953 [PubMed - as supplied by publisher]
Source: Medical Journal of Australia - Category: General Medicine Tags: Med J Aust Source Type: research
In this study, firstly the differential expression of Ski in OS tissues and osteochondroma tissues was detected, and the expression of Ski in both human OS cell lines (MG63 and U2OS) and normal osteoblasts (hFoB1.19) was then detected. The results demonstrated that Ski expression was significantly upregulated in both human OS tissues and cell lines. The results led us to hypothesize that Ski may play an essential role in the pathological process of OS. Thus, Ski specific small interfere RNA (Ski‑siRNA) was used. The results revealed that OS cell proliferation was markedly inhibited following the knockdown of Ski, which w...
Source: International Journal of Oncology - Category: Cancer & Oncology Authors: Tags: Int J Oncol Source Type: research
CONCLUSION: Thus, the circEPSTI1-miR-892b-MCL1 axis affected osteosarcoma progression through miRNA sponging mechanism. circEPSTI1 may serve as a target and biomarker for osteosarcoma treatment. PMID: 31702512 [PubMed - as supplied by publisher]
Source: Current Cancer Drug Targets - Category: Cancer & Oncology Authors: Tags: Curr Cancer Drug Targets Source Type: research
Planta Med DOI: 10.1055/a-1013-0382In Europe, especially in German-speaking countries, administration of mistletoe extracts is the most common and popular complementary and alternative therapy approach reported in oncology. Mistletoe therapy is applied to children with cancer for curative and palliative therapeutic regimes with increasing frequency, but at the same time, there are only a few studies on the effectiveness of this therapy. Therefore, we have investigated the response of various pediatric cell lines (acute myeloid leukemia, Ewingʼs sarcoma, hepatocellular carcinoma, medulloblastoma, neuroblastoma, and osteosa...
Source: Planta Medica - Category: Drugs & Pharmacology Authors: Tags: Original Papers Source Type: research
Conditions:   Adenocarcinoma;   Adenocystic Carcinoma;   Anal Cancer;   Appendix Cancer;   Brain Tumor;   Glioblastoma;   Astrocytoma;   Bile Duct Cancer;   Cholangiocarcinoma;   Bladder Cancer;   Bone Cancer;   Synovial Sarcoma;   Chondrosarcoma;   Liposarcoma;   Sarcoma, Kaposi;   S arcoma,Soft Tissue;   Sarcoma;   Osteosarcoma;   CNS Cancer;   Brain Stem Neoplasms;   Breast Cancer;   Cervical Cancer;   Colorectal Cancer; &n...
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials
Authors: Song MZ, Zhang FL, Lin LJ Abstract As one of the leading causes of cancer-associated mortalities worldwide, the overall survival rate of osteosarcoma has stably remained at 15-30% for several decades. (3R)- 5,6,7-trihydroxy-3-isopropyl-3-methylisochroman-1-one (TIM), isolated from the whole plant of Selaginella moellendorffii Hieron., has been reported to have pharmacological activities. In the present study, the anti-proliferative effects of TIM against osteosarcoma were evaluated, and the underlying molecular mechanisms were explored. The results demonstrated that TIM inhibited proliferation and induced ...
Source: Experimental and Therapeutic Medicine - Category: General Medicine Tags: Exp Ther Med Source Type: research
SummaryOsteosarcoma (OS) is the most common primary malignant bone tumor and mainly affects children and adolescents. The OS five-year survival rate remains very low. Thus, novel therapeutic protocols for the treatment of OS are needed. Several approaches targeting deregulated signaling pathways have been proposed. The antitumoral effects of polyphenols, which are naturally occurring compounds with potent antioxidant and anti-inflammatory activity, have been investigated in different tumors. Gossypol, which is a natural polyphenolic aldehyde isolated from the seeds of the cotton plant, has been shown to exert antitumoral a...
Source: Investigational New Drugs - Category: Drugs & Pharmacology Source Type: research
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