Aminoacids--precursors of melanin synthesis in hamster melanoma.

Abstract:

:The role of L-tyrosine, L-phenylalanine, L-dihydroxyphenylalanine (dopa) and L-tryptophan in melanin biosynthesis in melanotic hamster melanoma IC-Sofia was investigated with the aid of 14C-aminoacids. Tyrosine and phenylalanine were found to be the main melanin precursors: about 64.5% of total melanin labeling was due to tyrosine incorporation and 27.4% to phenylalanine incorporation. Negligible proportions of melanin radioactivity (5.7% and 2.4%, respectively) resulted from dopa and tryptophan utilization in melanin synthesis. The involvement of each of the aminoacids under investigation in melanin synthesis in vivo is discussed.

authors

Blagoeva PM

doi

10.1007/BF00390476

subject

Has Abstract

pub_date

1984-01-01 00:00:00

pages

366-8

issue

3

eissn

0171-5216

issn

1432-1335

journal_volume

108

pub_type

杂志文章
  • Radiotherapy for the treatment of solitary plasmacytoma: 7-year outcomes by a mono-institutional experience.

    abstract:OBJECTIVES:Solitary plasmacytoma (SP) is characterized by a single mass of clonal plasma cells. Definitive RT can result in long-term local control of the SP. Due to the small number of patients and narrow range of doses, phase III randomized trials are lacking. The aim of this study is to further support the potential...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/s00432-020-03452-y

    authors: Alghisi A,Borghetti P,Maddalo M,Roccaro AM,Tucci A,Mazzola R,Magrini SM,Lo Casto A,Bonù ML,Tomasini D,Pasinetti N,Peretto G,Bertagna F,Tomasi C,Buglione M,Triggiani L

    更新日期:2020-11-17 00:00:00

  • Down-regulation of androgen receptor by progestins and interference with estrogenic or androgenic stimulation of mammary carcinoma cell growth.

    abstract::The regulatory influence of medroxyprogesterone acetate (MPA) on estrogen and androgen receptors of the human breast cancer cell lines MCF-7 and EFM-19 was explored in conjunction with the growth-promoting properties of these steroids. In the absence of steroidal stimulation, up to 1 microM MPA had no effect on the pr...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/BF01613000

    authors: Hackenberg R,Hofmann J,Wolff G,Hölzel F,Schulz KD

    更新日期:1990-01-01 00:00:00

  • Increased gene copy number of HER2 and concordant protein overexpression found in a subset of eyelid sebaceous gland carcinoma indicate HER2 as a potential therapeutic target.

    abstract:PURPOSE:To identify crucial molecular alterations of receptor tyrosine kinases that can be used as potential therapeutic targets for eyelid sebaceous gland carcinoma (SbGC). METHODS:The expression levels of HER2, EGFR, C-MET, and FGFR1 were determined by immunohistochemistry (IHC). The copy numbers of the HER2, EGFR, ...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/s00432-015-2009-z

    authors: Lee MJ,Kim N,Choung HK,Choe JY,Khwarg SI,Kim JE

    更新日期:2016-01-01 00:00:00

  • Induction/repair of strand breakage in mature and nascent DNA of cultured Chinese hamster ovary cells exposed to hydrogen peroxide.

    abstract::Treatment of cultured mammalian cells with hydrogen peroxide results in the production of extensive DNA damage. Strand breakage was produced at the level of either nascent or mature DNA and the former target appeared slightly more resistant than the latter. Although inhibitors of the enzyme poly(ADP-ribose) polymerase...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/BF01211801

    authors: Cantoni O,Fiorani M,Mugnaini M,Cattabeni F

    更新日期:1992-01-01 00:00:00

  • Cytotoxicity, cell-cycle perturbations and apoptosis in human tumor cells by lipophilic N4-alkyl-1-beta-D-arabinofuranosylcytosine derivatives and the new heteronucleoside phosphate dimer arabinocytidylyl-(5'-->5')-N4-octadecyl-1-beta-D-arabinofuranosylcy

    abstract::The arabinofuranosylcytosine (AraC) derivative N4-octadecyl-1-beta-D-arabinofuranosylcytosine (NOAC) and its (5'-->5')-heterodinucleoside phosphate analog NOAC-AraC were compared with AraC for cytotoxicity, cell-cycle dependence, phosphorylation by deoxycytidine (dC) kinase and apoptosis induction in native, AraC- or ...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/s004320050349

    authors: Horber DH,Cattaneo-Pangrazzi RM,von Ballmoos P,Schott H,Ludwig PS,Eriksson S,Fichtner I,Schwendener RA

    更新日期:2000-06-01 00:00:00

  • Malignant tumors after chronic exposure to vinyl chloride.

    abstract::Correlations between exposure to vinyl chloride and the development of malignant tumors in the liver have been know since 1974 and have been confirmed by many an experimental investigation. Based on the evaluation of mortality statistics from nine different countries an increased incidence of malignant tumors of the l...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/BF00410529

    authors: Emmerich KH,Norpoth K

    更新日期:1981-01-01 00:00:00

  • Loss of allelic heterozygosity at the harvey ras locus in human oral carcinomas.

    abstract::The Harvey ras locus was examined for restriction fragment polymorphism and loss of allelic heterozygosity in 62 oral cancer patients. Southern blot analysis on BamHI digests of the tumour tissue DNA, revealed 23 patients with H-ras-1 heterozygosity. The probes used to study the polymorphism were the BamHI 6.6-kb frag...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/BF01612771

    authors: Saranath D,Bhoite LT,Mehta AR,Sanghavi V,Deo MG

    更新日期:1991-01-01 00:00:00

  • Suppressed cellular immunity in patients with nasopharyngeal carcinoma.

    abstract::The subsets and functions of lymphocytes were investigated in patients with nasopharyngeal carcinoma (NPC). The patients were divided into two groups comprising tumor-bearing patients and those in remission. There was no difference in the proportion of T cells among tumor-bearing, remission and healthy control groups....

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/BF01200735

    authors: Tsukuda M,Sawaki S,Yanoma S

    更新日期:1993-01-01 00:00:00

  • A novel role for DYX1C1, a chaperone protein for both Hsp70 and Hsp90, in breast cancer.

    abstract:AIMS:With three consecutive tetratricopeptide repeat (TPR) motifs at its C-terminus essential for neuronal migration, and a p23 domain at its N-terminus, DYX1C1 was the first gene proposed to have a role in developmental dyslexia. In this study, we attempted to identify the potential interaction of DYX1C1 and heat shoc...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/s00432-009-0568-6

    authors: Chen Y,Zhao M,Wang S,Chen J,Wang Y,Cao Q,Zhou W,Liu J,Xu Z,Tong G,Li J

    更新日期:2009-09-01 00:00:00

  • Variables associated with patient-reported outcomes in persons with chronic myeloid leukemia receiving tyrosine kinase-inhibitor therapy.

    abstract:PURPOSE:Explore patient-reported outcomes (PROs), including health-related quality of life (HRQoL), satisfaction with therapy, impact of the therapy on work and daily life, and concerns related to the therapy and identify variables associated with PROs in persons with chronic myeloid leukemia (CML) receiving tyrosine k...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/s00432-017-2353-2

    authors: Jiang Q,Wang HB,Yu L,Gale RP

    更新日期:2017-06-01 00:00:00

  • Dept. of Microbiology, School of Medicine, East Carolina University, Greenville, NC.

    abstract::The responsiveness of spleen cells from C57BL/6J mice to various immunogenic stimuli was examined during the progressive growth of a poorly immunogenic fibrosarcoma T241. A strong correlation was observed between the progressive tumor growth and the depression of response to Concanavalin A, lipopolysaccharide, sheep r...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/BF00410112

    authors: Gautam SC,Gautam S,Deodhar SD

    更新日期:1981-01-01 00:00:00

  • Identification of prognostic markers of high grade prostate cancer through an integrated bioinformatics approach.

    abstract:PURPOSE:Prostate cancer is one of the leading causes of cancer death for male. In the present study, we applied an integrated bioinformatics approach to provide a novel perspective and identified some hub genes of prostate cancer. METHOD:Microarray data of fifty-nine prostate cancer were downloaded from Gene Expressio...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/s00432-017-2497-0

    authors: Huang H,Zhang Q,Ye C,Lv JM,Liu X,Chen L,Wu H,Yin L,Cui XG,Xu DF,Liu WH

    更新日期:2017-12-01 00:00:00

  • Modifiable health-related factors (smoking, physical activity and body mass index) and health care use and costs among adult cancer survivors.

    abstract:OBJECTIVE:To examine the associations between modifiable health-related factors, such as smoking, low physical activity and higher body mass index (BMI), and annual health care visits and expenditures among adult cancer survivors in the United States. METHODS:Using data from the 2010-2014 Medical Expenditures Panel Su...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/s00432-017-2494-3

    authors: Kaul S,Avila JC,Jupiter D,Rodriguez AM,Kirchhoff AC,Kuo YF

    更新日期:2017-12-01 00:00:00

  • Bone metastases in germ cell tumor patients.

    abstract:PURPOSE:Little data exist on characteristics, treatment, and outcome of patients with bone metastases from germ cell cancer. METHODS:A total of 434 patients with poor prognosis germ cell cancer, who underwent primary high-dose chemotherapy (HD-CTX) within two phase II trials, were retrospectively analyzed. RESULTS:40...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章,多中心研究

    doi:10.1007/s00432-012-1169-3

    authors: Oechsle K,Bokemeyer C,Kollmannsberger C,Mayer F,Berger LA,Oing C,Honecker F

    更新日期:2012-06-01 00:00:00

  • Determining the nuclear area in normal breast epithelia and in the nuclei of mammary carcinomas.

    abstract::In view of the great variation in the size of epithelial cell nuclei in benign changes in the mammary gland, the cytologist is often faced with diagnostic difficulties. Clear differences in the size of the nuclei in aspiration biopsies from the mammary glands of pregnant women and those from the mammary glands of post...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/BF00390363

    authors: Schöndorf H,Naujoks H

    更新日期:1985-01-01 00:00:00

  • Aromatase in breast cancer tissue--localization and relationship with reproductive status of patients.

    abstract::The precise place of local estrogen production in mammary cancer is still controversial. In this investigation localization of aromatase (the key enzyme of estrogen biosynthesis) was studied in breast cancer tissue by immunohistochemical method using polyclonal rabbit antibodies. The cytoplasmic staining was found in ...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/BF01187162

    authors: Berstein LM,Larionov AA,Kyshtoobaeva ASh,Pozharisski KM,Semiglazov VF,Ivanova OA

    更新日期:1996-01-01 00:00:00

  • Down-regulation of a gastric transcription factor, Sox2, and ectopic expression of intestinal homeobox genes, Cdx1 and Cdx2: inverse correlation during progression from gastric/intestinal-mixed to complete intestinal metaplasia.

    abstract:PURPOSE:The molecular mechanisms underlying the development of intestinal metaplasia (IM) of the human stomach have yet to be clarified in detail. Besides ectopic expression of intestinal transcription factors, Cdx1 and Cdx2, little information is available regarding other regulatory factors. Hence, we here analyzed So...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/s00432-003-0519-6

    authors: Tsukamoto T,Inada K,Tanaka H,Mizoshita T,Mihara M,Ushijima T,Yamamura Y,Nakamura S,Tatematsu M

    更新日期:2004-03-01 00:00:00

  • Dose effect of cigarette smoking on frequency and spectrum of epidermal growth factor receptor gene mutations in Korean patients with non-small cell lung cancer.

    abstract:PURPOSE:This study aimed to determine the dose effect of smoking on the mutational frequency and spectrum of epidermal growth factor receptor (EGFR) gene in Korean non-small cell lung cancer (NSCLC). METHODS:Detailed smoking histories were obtained from 324 consecutively enrolled Korean NSCLC patients. Mutational stat...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/s00432-010-0853-4

    authors: Lee YJ,Shim HS,Kang YA,Hong SJ,Kim HK,Kim H,Kim SK,Choi SH,Kim JH,Cho BC

    更新日期:2010-12-01 00:00:00

  • DNA adducts in experimental cancer research.

    abstract::The role of DNA adducts in the initiation of cancer is scrutinized in this presentation. Work on the activation of oncogenes, particularly on ras, has provided new evidence to link DNA adducts and tumour formation. Polycyclic hydrocarbons and nitroso compounds can cause activation of ras oncogenes through a defined po...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章,评审

    doi:10.1007/BF00395910

    authors: Hemminki K,Försti A,Mustonen R,Savela K

    更新日期:1986-01-01 00:00:00

  • Immunohistochemical and biochemical characterization of antisera raised to human tumor nucleoli.

    abstract::Antinucleolar antisera were raised in rabbits, goats and sheep to nucleoli isolated from three human tumor cell lines. The antisera were shown to cross-react by immunofluorescence with human tumor cell lines originating from different organs and with frozen sections from a wide variety of human malignant and non-malig...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/BF00400962

    authors: Greenfield RS,Lamon MO,Olech LJ,Grattan JA

    更新日期:1989-01-01 00:00:00

  • Microwave ablation as local consolidative therapy for patients with extracranial oligometastatic EGFR-mutant non-small cell lung cancer without progression after first-line EGFR-TKIs treatment.

    abstract:OBJECTIVES:Evidence from multiple clinical trials showed that local consolidative therapy (LCT) improved survival in oligometastatic non-small cell lung cancer (NSCLC) patients. In the present study, we aim to explore the potential role of microwave ablation (MWA) as LCT for epidermal growth factor receptor (EGFR)-muta...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/s00432-019-03043-6

    authors: Ni Y,Ye X,Yang X,Huang G,Li W,Wang J,Han X,Wei Z,Meng M

    更新日期:2020-01-01 00:00:00

  • Clinical characteristics and comparison of the outcome in young versus older patients with upper gastrointestinal carcinoma.

    abstract:BACKGROUND:The clinical behaviour and outcome of young patients with gastroesophageal tumours (GET) is surmised to differ from older patients, yet data on the comparison of these two patient subgroups is scarce. This study focuses on the investigation of the clinical characteristics and survival outcome of younger-age ...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/s00432-020-03302-x

    authors: Puhr HC,Karner A,Taghizadeh H,Jomrich G,Schoppmann SF,Preusser M,Ilhan-Mutlu A

    更新日期:2020-12-01 00:00:00

  • The analysis of lymphoid subpopulations in normal and malignant tissues by immunofluorescence techniques.

    abstract::Tissue sections of frozen biopsy specimens obtained from normal and hyperplastic human lymphoid tissues as well as 40 cases of non-Hodgkin's lymphomas were analysed in immunofluorescence tests (using red TRITC and green FITC double-labeling). A panel of antisera including well-characterized conventional reagents to im...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/BF00405058

    authors: Janossy G,Thomas JA,Pizzolo G

    更新日期:1981-01-01 00:00:00

  • Subareolar blue dye only injection sentinel lymph node biopsy could reduce the numbers of standard axillary lymph node dissection in environments without access to nuclear medicine.

    abstract:PURPOSE:The gold standard of axillary sentinel lymph node biopsy (SLNB) in breast cancer is the combination of radioactive colloid and blue dye injection. Worldwide, numerous hospitals without access to radioactive tracers still perform a routine complete axillary lymph node dissection (ALND). We retrospectively analyz...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/s00432-007-0333-7

    authors: Kavallaris A,Camara O,Runnebaum IB

    更新日期:2008-06-01 00:00:00

  • Plasma glutamate concentration and lymphocyte activity.

    abstract::Elevated glutamate concentrations are commonly observed in tumor patients, and glutamate was recently found to competitively inhibit the membrane transport of cystine. We therefore investigated the possibility that elevated plasma glutamate levels may damage the immune system. The experiments in this report demonstrat...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/BF00417824

    authors: Dröge W,Eck HP,Betzler M,Schlag P,Drings P,Ebert W

    更新日期:1988-01-01 00:00:00

  • Interferon alpha for essential thrombocythemia during 34 high-risk pregnancies: outcome and safety.

    abstract:PURPOSE:Pregnancies in women with essential thrombocythemia (ET) are at a higher risk for obstetrical complications. Acetylsalicylic acid (ASA) and low-molecular weight heparin (LMWH) are common options to prevent miscarriages and maternal complications, whereas interferon alpha (IFN) seems to be the cytoreductive ther...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/s00432-020-03430-4

    authors: Schrickel L,Heidel FH,Sadjadian P,Becker T,Kolatzki V,Hochhaus A,Griesshammer M,Wille K,German Study Group MPN, GSG-MPN.

    更新日期:2020-11-02 00:00:00

  • Discontinuation and non-adherence to endocrine therapy in breast cancer patients: is lack of communication the decisive factor?

    abstract:INTRODUCTION:Non-adherence to anti-hormonal therapy is a major problem in gynecologic oncology. Reasons reported are side effects and lack of support. The aim of our study was an analysis of influence of experiences of patients with endocrine therapy and communication and information on this topic and their influence o...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/s00432-014-1779-z

    authors: Wuensch P,Hahne A,Haidinger R,Meißler K,Tenter B,Stoll C,Senf B,Huebner J

    更新日期:2015-01-01 00:00:00

  • Interobserver reproducibility of Gleason grading: evaluation using prostate cancer tissue microarrays.

    abstract:OBJECTIVES:Due to PSA screening and increased awareness, prostate cancer (PCa) is identified earlier resulting in smaller diagnostic samples on prostate needle biopsy. Because Gleason grading plays a critical role in treatment planning, we undertook a controlled study to evaluate interobserver variability among German ...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/s00432-008-0388-0

    authors: Burchardt M,Engers R,Müller M,Burchardt T,Willers R,Epstein JI,Ackermann R,Gabbert HE,de la Taille A,Rubin MA

    更新日期:2008-10-01 00:00:00

  • Significance of cancer-associated fibroblasts in the regulation of gene expression in the leading cells of invasive lung cancer.

    abstract:PURPOSE:Cancer-associated fibroblasts (CAFs) contribute to tumor progression through multiple pathways. However, the effect of CAFs on gene expression in lung cancer has been largely unknown. Here we systematically compared the gene expression changes in lung cancer cells induced by normal fibroblasts and CAFs. METHOD...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/s00432-012-1328-6

    authors: An J,Enomoto A,Weng L,Kato T,Iwakoshi A,Ushida K,Maeda K,Ishida-Takagishi M,Ishii G,Ming S,Sun T,Takahashi M

    更新日期:2013-03-01 00:00:00

  • 5-ethyl-2'-deoxyuridine, a modulator of both antitumour action and pharmacokinetics of 5-fluorouracil.

    abstract::The aim of the present studies was to elucidate the effects and optimal modulatory conditions of 5-ethyl-2'-deoxyuridine (EtdUrd) on the antitumour efficacy, pharmacokinetics and catabolism of 5-fluorouracil (5-FU) on Colon-26 and Colon-38 murine tumours. HPLC and GC-MS techniques were used to measure the concentratio...

    journal_title:Journal of cancer research and clinical oncology

    pub_type: 杂志文章

    doi:10.1007/s004320050333

    authors: Kralovánszky J,Katona C,Jeney A,Pandi E,Noordhuis P,Erdélyi-Tóth V,Otvös L,Kovács P,Van der Wilt CL,Peters GJ

    更新日期:1999-12-01 00:00:00