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Effect of neoadjuvant chemotherapy on low-density lipoprotein (LDL) receptor and LDL receptor-related protein 1 (LRP-1) receptor in locally advanced breast cancer BJMBR
Pires,L.A.; Hegg,R.; Freitas,F.R.; Tavares,E.R.; Almeida,C.P.; Baracat,E.C.; Maranhão,R.C..
Low-density lipoprotein (LDL) receptors are overexpressed in most neoplastic cell lines and provide a mechanism for the internalization and concentration of drug-laden nanoemulsions that bind to these receptors. The aim of the present study was to determine whether the administration of standard chemotherapeutic schemes can alter the expression of LDL and LDL receptor-related protein 1 (LRP-1) receptors in breast carcinoma. Fragments of tumoral and normal breast tissue from 16 consecutive volunteer women with breast cancer in stage II or III were obtained from biopsies before the beginning of neoadjuvant chemotherapy and after chemotherapy, from fragments excised during mastectomy. Tissues were analyzed by immunohistochemistry for both receptors. Because...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Breast cancer; Lipoproteins; LDL receptor; LRP-1 receptor; Chemotherapy; Nanoemulsion; Drug delivery.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012000600012
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Effects of APOE, APOB and LDLR variants on serum lipids and lack of association with xanthelasma in individuals from Southeastern Brazil Genet. Mol. Biol.
Nakazone,Marcelo A.; De Marchi,Miguel A.; Pinhel,Marcela A.S.; Barros,Carolina F.D.C.; Júlio,Maysa A.F.; Pinheiro,Anielli; Arazi,Simone S.; Hotta,Júlia K.; Hirata,Mário H.; Hirata,Rosario D.C.; Santos,José E. dos; Souza,Dorotéia R.S..
Xanthelasma might be a clinical manifestation of dyslipidemia, a recognized risk factor for coronary artery disease. We investigated the association of apolipoprotein E (APOE HhaI), apolipoprotein B (APOB XbaI and Ins/Del) and LDL receptor (LDLR AvaII and HincII) gene polymorphisms with lipid profiles in 100 Brazilians with xanthelasma and 100 controls. Allele frequencies were similar in both groups. APOE, APOB and LDLR genotypes were not correlated with differences in the serum lipid profile. In individuals with xanthelasma, the APOB D allele was associated with less chance of having increased LDL-cholesterol (O.R. = 0.16, CI95% = 0.03-0.94, p = 0.042). In the control group, the APOB X+ allele was associated with less chance of having both increased total...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Apolipoprotein B; Apolipoprotein E; LDL receptor; Gene polymorphisms; Xanthelasma.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000200004
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Polymorphisms of the low-density lipoprotein receptor gene in Brazilian individuals with heterozygous familial hypercholesterolemia BJMBR
Salazar,L.A.; Cavalli,S.A.; Hirata,M.H.; Diament,J.; Forti,N.; Giannini,S.D.; Nakandakare,E.R.; Bertolami,M.C.; Hirata,R.D.C..
Familial hypercholesterolemia (FH) is a metabolic disorder inherited as an autosomal dominant trait characterized by an increased plasma low-density lipoprotein (LDL) level. The disease is caused by several different mutations in the LDL receptor gene. Although early identification of individuals carrying the defective gene could be useful in reducing the risk of atherosclerosis and myocardial infarction, the techniques available for determining the number of the functional LDL receptor molecules are difficult to carry out and expensive. Polymorphisms associated with this gene may be used for unequivocal diagnosis of FH in several populations. The aim of our study was to evaluate the genotype distribution and relative allele frequencies of three...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Familial hypercholesterolemia; DNA polymorphism; Atherosclerosis; Genetics; LDL receptor.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000001100006
Registros recuperados: 3
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