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1.
Malays J Pathol ; 38(2): 83-92, 2016 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-27568664

RESUMO

INTRODUCTION: Laminin is a glycoprotein with diverse functions in carcinogenesis including cell proliferation, invasion, metastases and epithelial-mesenchymal transition (EMT). In breast cancer (BC) laminin expression is speculated to be associated with unfavourable clinicopathological and molecular characteristics. We hypothesize that laminin expression would contributed to the aggressive nature of basal like and triple negative BC phenotype observed in Black women. METHODS: The expression of laminin was determined in a well-characterised Nigerian cohort of 255 BC using tissue microarray and immunohistochemistry. Laminin expression was compared with clinical, pathological and survival characteristics. RESULTS: Laminin was expressed in 146 (57.3%) cases and significantly correlated with younger age at diagnosis (p=0.005), premenopausal status (p=0.003), expression of EGFR (p=0.002), ID4 and MTA1, basal cytokeratin 5/6, p53, and triple negative tumours (all p<0.001). In addition, there was an inverse association of laminin expression with E-cadherin (p=0.03), ER and PgR (all p<0.001) and a trend with BRCA1 (p=0.05). Univariate survival analysis showed tumours positive for laminin had significantly poorer breast cancer specific survival (BCSS, p=0.009) and disease free interval (p=0.03), but not associated in Cox multivariate analysis. CONCLUSION: This study demonstrates that laminin expression may have important roles in the aggressive nature observed in the basal-like and triple negative molecular subtype of Nigerian BC women.


Assuntos
Biomarcadores Tumorais/análise , Neoplasias da Mama/patologia , Laminina/biossíntese , Adulto , Idoso , População Negra , Neoplasias da Mama/mortalidade , Membrana Celular/química , Membrana Celular/metabolismo , Feminino , Humanos , Imuno-Histoquímica , Estimativa de Kaplan-Meier , Laminina/análise , Pessoa de Meia-Idade , Nigéria , Fenótipo , Prognóstico , Modelos de Riscos Proporcionais , Análise Serial de Tecidos
2.
Afr J Med Med Sci ; 41(3): 289-95, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23457877

RESUMO

BACKGROUND: The aim of this study was to determine the sero-prevalence of Cag-A strains of Helicobacter pylori in both dyspeptic and non-dyspeptic individuals and also correlate the serological status of Gag-A strain of H. pylori with the various graded histological variables of chronic gastritis in the dyspeptic patients. METHODS: Using helicobacter p120 Cag-A enzyme linked immunosorbent assay, Cag-A serology test was carried out on 65 dyspeptic patients and 65 age and sex matched non-dyspeptic controls. The gastric biopsies of the patients were also histologically examined to ascertain the presence, nature and degree of the following histological variables of gastritis: colonisation by H. pylori; inflammation, intestinal metaplasia and mucosal atrophy. The CagA serological status was then correlated with the graded variables. RESULTS: A prevalence of 46.2% and 58.8% seropositivity for Cag-A strain of H. pylori was found among dyspeptic patients and control individuals respectively. Cag-A seropositive patients accounted for nine(81.8%) of the 11 cases with moderate to severe activity and 75% of both cases with mucosal atrophy and cases with intestinal metaplasia. CONCLUSION: Infection with Cag-A positive Helicobacter pylori was equally prevalent among both dyspeptic patients and control subjects studied. CagA seropositivity, however, appeared to be associated with higher inflammatory activity in the mucosa of patients with chronic gastritis and may be associated with intestinal metaplasia and mucosal atrophy in H. pylori-induced chronic gastritis.


Assuntos
Antígenos de Bactérias/sangue , Proteínas de Bactérias/sangue , Gastrite/microbiologia , Gastrite/patologia , Infecções por Helicobacter/complicações , Helicobacter pylori , Adulto , Idoso , Doença Crônica , Dispepsia/complicações , Ensaio de Imunoadsorção Enzimática , Feminino , Mucosa Gástrica/microbiologia , Gastrite/complicações , Humanos , Masculino , Pessoa de Meia-Idade , Nigéria
3.
Nigerian Medical Practitioner ; 76(1-3): 3-7, 2019.
Artigo em Inglês | AIM | ID: biblio-1267982

RESUMO

The prevalence of obesity is rising worldwide including Sub-Saharan Africa just as the incidence of breast cancer is rising in same region with increasing morbidity and mortality. Obesity or overweight has been identified as a risk factor for breast cancer and both have been associated with poor outcome of breast cancer treatment. The objective of this study was to assess the effect of obesity /overweight on clinical response to Adriamycin Cyclophosphamide-Paclitaxel (AC-P) regimen neoadjuvant chemotherapy in patients with breast cancer. A prospective observational of 39 female patients with breast cancer. A prospective observational study of newly diagnosed breast cancer patients with palpable breast lumps on neoadjuvant chemotherapy of AC-P regime. Age of the patients, tumour size, stage, estrogen, progestogen and HER2 receptor status were noted. Height measured in metres and weight measured in Kilograms were recorded and Body Mass Index (BMI) calculated .Tumour size measured at presentation, then after first, third, sixth and eighth doses to determine response as defined by the UICC method such as complete clinical response, partial clinical response, stable disease and progressive disease. BMI was then categorized into Normal weight 25kg/m2 and Overweight 25-30kg/m2 and Obese 30kg/m2. 43.6% were obese, 33.3% were overweight and 23.1% were normal weight. Thirty percent of overweight /obese patients had complete clinical response 2 compared with 77% of low/normal weight patients and this was statistically significant (X2 =6.53, p 0.015). 76.7% of the overweight/obese were premenopausal compared with 23.3% who were post menopausal, and this is statistically significant.(X2 =5.84, p 0.024). Obesity/ overweight is associated with poorer clinical response to neoadjuvant chemotherapy in the cohort of patients studied


Assuntos
África Subsaariana , Índice de Massa Corporal , Neoplasias da Mama , Tratamento Farmacológico , Terapia Neoadjuvante , Obesidade , Sobrepeso
4.
Artigo em Inglês | AIM | ID: biblio-1259371

RESUMO

Background: The seroprevalence of anti-H. pylori IgA antibodies has been reported to vary among populations and in relation to strains of Helicobacter pylori bacterium. However; there has been conflicting reports on the association between IgA serological status and the histological variables of chronic gastritis. This study was therefore conducted to clarify this relationship. Method : Using an ELISA based commercial kit; anti-H. pylori IgA antibody tests were performed on 65 dyspeptic patients and 65 age- and ex-matched controls. The gastric biopsies of these patients were also examined histologically for the degrees of inflammation; activity; intestinal metaplasia and atrophy. The CagA status of the patients had been determined previously. Results: There was an anti-H. pylori IgA antibody prevalence of 67.7in dyspeptics and 56.9in non-dyspeptic individuals. No correlations were observed between serum H. pylori IgA antibody and the graded parameters of chronic gastritis in dyspeptic patients; although twice more patients with mild gastric inflammation were found among IgA positive than among IgA negative patients. However; a statistically significant relationship was established between serum IgA positivity and the CagA status of the patients (p = 0.028). Conclusion: The seroprevalence of anti-H. pylori IgA antibody is high in our environment. Serum IgA status may be associated with milder degrees of gastritis in our patients but a larger cohort of patients is needed to confirm this. There seems to be a good agreement between serum IgA and CagA statuses among dyspeptic patients


Assuntos
Gastrite , Helicobacter pylori , Imunoglobulina A
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