Document Type : Systematic Review and Meta-analysis
Naval Medical School, Secretary of the Navy, Mexico
Naval Medical School, Secretary of the Navy, SEMAR, Mexico
Department of Pathology, High- Specialty Naval General Hospital (HOSGENAES), SEMAR, Mexico
Division of Neurosciences, National Institute of Rehabilitation (INR), CDMX, Mexico
Naval Clinic South (CLINISUR), SEMAR, Mexico
Director’s Office, Naval Medical School, SEMAR, Mexico
6Branch, Naval Medical School, SEMAR, Mexico
Background: Breast Cancer (BCa) is the most common malignant tumour in Mexican women. In BCa, several studies have linked β2-adrenergic receptor activation with increased tumour growth and progression as related with Epinephrine-NorEpinephrine (E-NE) stimulation. The aim of this study was to describe Beta-Blocker (BB) treatment related with reduction of the risk of metastasis in Mexican patients with BCa.
Materials and Methods: We collected data of 120 patients seen at the High-Specialty Naval General Hospital in Mexico City (HOSGENAES), all of these with a histopathological diagnosis of BCa. Four groups of patients were divided as follows: without Systemic Arterial Hypertension (SAH); with SAH treatment with non-selective BB; with SAH treatment with selective BB, and with SAH treatment with other antihypertensive drugs. Chi-square, Mantel- Haenszel, Student t, and ANOVA tests were performed for data analysis.
Results: On average, patients were 54.8±11.8 years of age. Risk factors such as smoking and consuming alcohol exhibited a frequency of 33 and 36.5% respectively. Clinical stages III- IV were found in 50% of patients, while, 30% of patients had arterial hypertension (n=29 and N=96, respectively) and 17.5% used BB. One hundred percent of patients with arterial hypertension treated with BB for β1 - and β2 -adrenergic-receptors did not present metastasis globally, but patients treated with β1 BB presented 30% of metastasis while patients treated with no BB or without SAH had around 70% of metastasis.
Conclusions: In Mexican patients with BCa and SAH treated with non-selective (β1- and β2-adrenergic receptors) BB, a decrease in the risk for metastasis was observed at the time of diagnosis.