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Articles by A. J Greisinger
Total Records ( 2 ) for A. J Greisinger
  J Lin , J Wang , A. J Greisinger , H. B Grossman , M. R Forman , C. P Dinney , E. T Hawk and X. Wu
 

We evaluated the association between energy balance and risk of bladder cancer and assessed the joint effects of genetic variants in the mammalian target of rapamycin (mTOR) pathway genes with energy balance. The study included 803 Caucasian bladder cancer patients and 803 healthy Caucasian controls matched to cases by age (±5 years) and gender. High energy intake [odds ratio, 1.60; 95% confidence interval (95% CI), 1.23-2.09] and low physical activity (odds ratio, 2.82; 95% CI, 2.10-3.79) were each associated with significantly increased risk of bladder cancer with dose-response pattern (Ptrend < 0.001). However, obesity (body mass index, ≥30) was not associated with the risk. Among 222 single nucleotide polymorphisms, 28 single nucleotide polymorphisms located in six genes of mTOR pathway were significantly associated with the risk. Further, the risk associated with high energy intake and low physical activity was only observed among subjects carrying a high number of unfavorable genotypes in the pathway. Moreover, when physical activity, energy intake, and genetic variants were analyzed jointly, the study population was clearly stratified into a range of low- to high-risk subgroups as defined energy balance status. Compared with subjects within the most favorable energy balance category (low energy intake, intensive physical activity, low number of unfavorable genotypes), subjects in the worst energy balance category (high energy intake, low physical activity, and carrying ≥7 unfavorable genotypes) had 21.93-fold increased risk (95% CI, 6.7-71.77). Our results provide the first strong evidence that physical activity, energy intake, and genetic variants in the mTOR pathway jointly influence bladder cancer susceptibility and that these results have implications for bladder cancer prevention. Cancer Prev Res; 3(4); 505–17. ©2010 AACR.

  V. N Pavlik , A. J Greisinger , J Pool , P Haidet and D. J. Hyman
 

Hypertension affects nearly one third of the US population overall, and the prevalence rises sharply with age. In spite of public educational campaigns and professional education programs to encourage blood pressure measurement and control of both systolic and diastolic control to <140/90 mm Hg (or 130/80 mm Hg if diabetic), 43% of treated hypertensives do not achieve the recommended Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure target. Among blacks, 48% are uncontrolled on treatment. The majority of persons classified as poorly controlled hypertensives have mild systolic blood pressure elevation (in the range of 140 to 160 mm Hg). We hypothesized that physician uncertainty regarding the patient’s usual blood pressure, as well as uncertainty regarding the extent of medication nonadherence, represent an important barrier to further reductions in the proportion of uncontrolled hypertensives in the United States. Using cluster randomization, 10 primary care clinics (6 from a public health care system and 4 from a private clinic system) were randomized to either the uncertainty reduction intervention condition or to usual care. An average of 68 patients per clinic were recruited to serve as units of observation. Physicians in the 5 intervention clinics were provided with a specially designed study form that included a graph of recent blood pressure measurements in their study patients, a check box to indicate their assessment of the adequacy of the patient’s blood pressure control, and a menu of services they could order to aid in patient management. These menu options included 24-hour ambulatory blood pressure monitoring; electronic bottle cap assessment of medication adherence, followed by medication adherence counseling in patients found to be nonadherent; and lifestyle assessment and counseling followed by 24-hour ambulatory blood pressure monitoring. Physicians in the 5 usual practice clinics did not have access to these services but were informed of which patients had been enrolled in the study. Substudies carried out to further characterize the study population and interpret intervention results included ambulatory blood pressure monitoring and electronic bottle cap monitoring in a random subsample of patients at baseline, and audio recording of patient-physician encounters after intervention implementation. The primary study end point was defined as the proportion of patients with controlled blood pressure (<140/90 mm Hg or <130/80 mm Hg if diabetic). Secondary end points include actual measured clinic systolic and diastolic blood pressure, patient physician communication patterns, physician prescribing patient self-reported lifestyle and medication adherence, physician knowledge, attitude and beliefs regarding the utility of intervention tools to achieve blood pressure control, and the cost-effectiveness of the intervention. Six-hundred eighty patients have been randomized, and 675 remain in active follow-up after 1.5 years. Patient closeout will be complete in March 2009. Analyses of the baseline data are in progress. Office-based blood pressure measurement error and bias, as well as physician and patient beliefs about the need for treatment intensification, may be important factors that limit further progress in blood pressure control. This trial will provide data on the extent to which available technologies not widely used in primary care will change physician prescribing behavior and patient adherence to prescribed treatment.

 
 
 
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