Abstract:
:We studied the response of mouse B16F10 and SK-MEL-28 and SK-MEL-1 human melanoma cell lines to treatment with 4-hydroxyanisole (4-HA), and attempted to relate the response to the dopa oxidase levels and the morphological characteristics of each cell line. Clear dose-response curves were observed after 24 h of treatment in each cell line, the 4-HA being more toxic to the B16F10 cells, with an ID50 value of 215 microM. This was much lower than that observed for the SK-MEL-28 and SK-MEL-1 cell lines (ID50 of 5.98 mM and 7.17 mM, respectively). There was a direct relationship between toxicity levels and dopa oxidase activity, since the highest specific activity was obtained for B16F10 (15.9 mU), while lower activity was registered for SK-MEL-28 (4.59 mU) and SK-MEL-1 (1.24 mU), which also showed lower 4-HA toxicity. Morphologically, we observed the typical characteristics of cellular injury, with swelling and dilation of the internal membranes and organelles, an increased number of vacuoles, and an increased number of abnormal multilamellar melanosomes or thick clumps of irregularly distributed melanin. On the other hand, we observed that the two cell lines with the lowest dopa oxidase activity contained more mature fully melanized melanosomes than B16F10, pointing to possible alterations in the melanosome transference mechanism and lower enzymatic activity in the mature melanosomes of these two human cell lines.
journal_name
Melanoma Resjournal_title
Melanoma researchauthors
Rodriguez-Vicente J,Vicente-Ortega V,Canteras-Jordana M,Calderon-Rubiales Fdoi
10.1097/00008390-199710000-00003subject
Has Abstractpub_date
1997-10-01 00:00:00pages
373-81issue
5eissn
0960-8931issn
1473-5636journal_volume
7pub_type
杂志文章abstract::Conditional survival in patients with localized primary cutaneous malignant melanoma (CMM) is well described. However, conditional recurrence-free survival (RFS) has not been investigated before. The aim of this study was to determine conditional RFS and test for time dependency in prognostic factors in patients with ...
journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/CMR.0000000000000479
更新日期:2018-12-01 00:00:00
abstract::Germline mutations determining increased cutaneous malignant melanoma (CMM) risk have been identified in familial and sporadic CMM cases, but they account only for a small proportion of CMM cases. Recent evidence suggests that germline epimutations (e.g. DNA methylation alterations), which can be inherited similarly t...
journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/CMR.0000000000000112
更新日期:2014-10-01 00:00:00
abstract::Regional lymph nodes are affected frequently by melanoma metastasis. Its microenvironment may be associated with tumor progression. We investigated sentinel nodes with and without tumor and negative nodes surrounding positive nodes, looking for patterns related to tumor immune interaction and lymphovascular progressio...
journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/CMR.0000000000000396
更新日期:2017-12-01 00:00:00
abstract::High-dose cisplatin regimens have been shown to be highly active in advanced melanoma patients but are associated with unacceptable side effects. In order to increase the platinum dose but avoid severe side effects, we treated 15 dacarbazine (DTIC)-resistant metastatic melanoma patients with a combination regimen of c...
journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/00008390-200108000-00012
更新日期:2001-08-01 00:00:00
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journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/00008390-199209000-00004
更新日期:1992-09-01 00:00:00
abstract::Recreational exposure to the sun may not explain fully current trends in melanoma incidence. The hypothesis was examined whether carcinogens in water play a role in the development of cutaneous melanoma. In a case-control study, 128 melanoma patients and 168 patients with other types of malignancy completed a detailed...
journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/00008390-199410000-00002
更新日期:1994-10-01 00:00:00
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journal_title:Melanoma research
pub_type: 杂志文章,多中心研究
doi:10.1097/CMR.0000000000000464
更新日期:2019-04-01 00:00:00
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journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/CMR.0000000000000706
更新日期:2021-02-01 00:00:00
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journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/00008390-200110000-00012
更新日期:2001-10-01 00:00:00
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journal_title:Melanoma research
pub_type: 杂志文章,评审
doi:
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journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/00008390-199704000-00008
更新日期:1997-04-01 00:00:00
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journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/01.cmr.0000215034.00318.7a
更新日期:2006-06-01 00:00:00
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journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/00008390-199806000-00001
更新日期:1998-06-01 00:00:00
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journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/CMR.0b013e3282f1d2b6
更新日期:2010-06-25 00:00:00
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journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/CMR.0000000000000456
更新日期:2018-08-01 00:00:00
abstract::Between 1983 and 1990, 59 patients with malignant melanoma were retrospectively reviewed to assess the safety, efficacy and the maximal tolerated dose of cisplatin used in hyperthermic isolated limb perfusion. The median follow-up was 29 months (range 3-54 months). The local recurrence rate was 12% in Stage I, 33% in ...
journal_title:Melanoma research
pub_type: 临床试验,杂志文章
doi:10.1097/00008390-199104000-00007
更新日期:1991-04-01 00:00:00
abstract::BRAF mutations are found in ~50% of metastatic melanomas, most commonly in codon V600. Vemurafenib improves progression-free survival and overall survival in patients with advanced BRAF-mutated melanoma. The results of a descriptive study evaluating vemurafenib in patients with advanced melanoma harbouring BRAF mutati...
journal_title:Melanoma research
pub_type: 杂志文章,多中心研究
doi:10.1097/CMR.0000000000000398
更新日期:2017-12-01 00:00:00
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journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/CMR.0000000000000029
更新日期:2014-02-01 00:00:00
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journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/00008390-199908000-00010
更新日期:1999-08-01 00:00:00
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journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/CMR.0b013e32834acc37
更新日期:2011-12-01 00:00:00
abstract::The occurrence of cancer in pregnant women is not a common phenomenon and the real incidence of malignant melanoma during this period is unknown. Many authors reported a poor prognosis in pregnant women with melanoma compared with non-pregnant women's tumour. Several retrospective reviews reported a worsened prognosis...
journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/01.cmr.0000232295.91536.09
更新日期:2006-12-01 00:00:00
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pub_type: 杂志文章
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journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/CMR.0000000000000656
更新日期:2020-06-01 00:00:00
abstract::Seasonal variation in melanoma diagnoses has been observed in numerous studies that used calendar time indicators. Depending on the latitude (and altitude) of the study region, the magnitude of seasonal and year-to-year variation of ultraviolet radiation (UVR) is neglected in these studies. An alternative approach com...
journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/CMR.0000000000000205
更新日期:2015-12-01 00:00:00
abstract::Although pelvic computed tomography (CT) scans are frequently performed as a part of routine surveillance, the evidence for or against the routine use of these scans in patients with primary melanoma in the head and neck is weak. We conducted a retrospective study to evaluate the value of pelvic CT scans as routine su...
journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/CMR.0b013e3283426821
更新日期:2011-04-01 00:00:00
abstract::Ultraviolet-B (UV-B) triggers a cascade of events involving cell cycle control genes leading ultimately to DNA repair or apoptosis. The hypothesis examined here is that the genetic abnormality predisposing to melanoma affects the ability of the cell to respond appropriately to UV-B, so favouring mutagenesis. Epstein-B...
journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/00008390-200102000-00001
更新日期:2001-02-01 00:00:00
abstract::An increased risk of melanoma has been variously reported in patients with chronic lymphocytic leukaemia (CLL), analogous with other immunosuppressed populations. To fully assess this association, we performed a systematic review and meta-analysis of available evidence from observational cohort studies. All such longi...
journal_title:Melanoma research
pub_type: 杂志文章,meta分析,评审
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更新日期:2016-04-01 00:00:00
abstract::Microphthalmia transcription factor (Mitf) is involved in melanocyte development and differentiation. We previously reported that Mitf expression, as detected by immunohistochemical analysis, is an independent prognostic marker in patients with intermediate-thickness melanoma. However, the clinical significance of Mit...
journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/CMR.0000000000000195
更新日期:2015-12-01 00:00:00
abstract::Significant advances have been made in the treatment of melanoma by targeting key cellular pathways, but additional targets are needed as many patients do not respond or relapse with resistant disease. MicroRNA-155 (MiR-155) has previously been shown to regulate melanoma cell growth and acts as a tumor suppressor. We ...
journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/CMR.0000000000000545
更新日期:2019-04-01 00:00:00
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journal_title:Melanoma research
pub_type: 杂志文章
doi:10.1097/CMR.0000000000000593
更新日期:2019-12-01 00:00:00