Publications by authors named "Bahena J"

Understanding the tissue-specific genetic controls of protein levels is essential to uncover mechanisms of post-transcriptional gene regulation. In this study, we generated a genomic atlas of protein levels in three tissues relevant to neurological disorders (brain, cerebrospinal fluid and plasma) by profiling thousands of proteins from participants with and without Alzheimer's disease. We identified 274, 127 and 32 protein quantitative trait loci (pQTLs) for cerebrospinal fluid, plasma and brain, respectively.

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Alpha-synuclein is the main protein component of Lewy bodies, the pathological hallmark of Parkinson's disease. However, genetic modifiers of cerebrospinal fluid (CSF) alpha-synuclein levels remain unknown. The use of CSF levels of amyloid beta, total tau, and phosphorylated tau as quantitative traits in genetic studies have provided novel insights into Alzheimer's disease pathophysiology.

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Apart from amyloid β deposition and tau neurofibrillary tangles, Alzheimer's disease (AD) is a neurodegenerative disorder characterized by neuronal loss and astrocytosis in the cerebral cortex. The goal of this study is to investigate genetic factors associated with the neuronal proportion in health and disease. To identify cell-autonomous genetic variants associated with neuronal proportion in cortical tissues, we inferred cellular population structure from bulk RNA-Seq derived from 1536 individuals.

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The objective of this open-label, parallel-group comparative study was to assess the clinical efficacy and safety of once-daily treatment for 8 weeks with telmisartan 80 mg in comparison with atenolol 50 mg on systolic blood pressure (SBP) and diastolic blood pressure (DBP) in patients with mild-to-moderate hypertension (morning supine SBP 141-199 mmHg, DBP 95-114 mmHg). A total of 58 patients were enrolled. The comparability of the two treatment groups was statistically documented at the beginning of the study.

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Blood pressure is not adequately controlled in almost 50% of patients with hypertension who are in receipt of antihypertensive therapy. This multicentre, prospective, open-label trial was designed to determine whether or not once-daily telmisartan 80 mg reduced blood pressure during the last 6 h of the 24-h dosing interval in patients with mild-to-moderate hypertension who were unresponsive to previous antihypertensive therapy. The study comprised 100 patients (47 males, 53 females) who had failed to respond satisfactorily to prior treatment given for a minimum of 3 months.

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We determined the prevalence of hepatitis C virus (HCV) in hemodialysis patients by antibody testing and HCV RNA determination by PCR. A total of 149 patients with kidney failure with replacement therapy were tested. The prevalence of anti-HCV was 6.

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The purpose was to evaluate the effect of surgery-radiotherapy delay in the outcome of patients treated for early breast cancer, who did not receive adjuvant systemic therapy. We retrospectively analyzed data from 623 patients with breast cancer diagnosis stage I and II and with clinically negative axillary node, treated over a 18 year period. Patients were grouped in basis of the delay in the beginning of their radiation therapy, after surgery.

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Purpose: High-dose rate (HDR) applicators for uterine cervix brachytherapy are used with increasing frequency. Because multiple HDR fractions are required for treatment, the applicator position reproducibility is of most importance. To study this effect, the clinical data from patients with uterine cervix cancer were examined retrospectively to evaluate the interfraction geometric variation of the HDR applicator and its potential treatment impact.

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The aim of this 3-month double-blind study was to assess the antihypertensive effect and acceptability of perindopril in comparison with enalapril in patients with mild to moderate essential hypertension. After a 4-week placebo run-in period, 161 patients with supine diastolic blood pressure (DBP) between 95 and 115 mmHg were randomized to receive perindopril 4 mg or enalapril 10 mg once daily. If supine DBP was higher than 90 mmHg, treatment was adjusted monthly, first by doubling the dose and then by addition of hydrochlorothiazide 12.

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A randomized, double-blind, parallel-group study was conducted to compare the safety and efficacy of the angiotensin-converting enzyme inhibitor quinapril with that of the beta-blocker atenolol. Fifty-six outpatients with mild to moderate hypertension were enrolled in the trial. After a 4-week washout period, 27 patients were treated with quinapril 20 mg once daily and 29 patients were treated with atenolol 50 mg once daily for 4 weeks.

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