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Sustained influence of infections on prostate-specific antigen concentration: An analysis of changes over 10 years of follow-up.

ABSTRACT: BACKGROUND:To extend our previous observation of a short-term rise in prostate-specific antigen (PSA) concentration, a marker of prostate inflammation and cell damage, during and immediately following sexually transmitted and systemic infections, we examined the longer-term influence of these infections, both individually and cumulatively, on PSA over a mean of 10 years of follow-up in young active duty U.S. servicemen. METHODS:We measured PSA in serum specimens collected in 1995-7 (baseline) and 2004-6 (follow-up) from 265 men diagnosed with chlamydia (CT), 72 with gonorrhea (GC), 37 with non-chlamydial, non-gonococcal urethritis (NCNGU), 58 with infectious mononucleosis (IM), 91 with other systemic or non-genitourinary infections such as varicella; and 125-258 men with no infectious disease diagnoses in their medical record during follow-up (controls). We examined the influence of these infections on PSA change between baseline and follow-up. RESULTS:The proportion of men with any increase in PSA (>0?ng/mL) over the 10-year average follow-up was significantly higher in men with histories of sexually transmitted infections (CT, GC, and NCNGU; 67.7% vs 60.8%, P?=?0.043), systemic infections (66.7% vs 54.4%, P?=?0.047), or any infections (all cases combined; 68.5% vs 54.4%, P?=?0.003) in their military medical record compared to controls. CONCLUSIONS:While PSA has been previously shown to rise during acute infection, these findings demonstrate that PSA remains elevated over a longer period. Additionally, the overall infection burden, rather than solely genitourinary-specific infection burden, contributed to these long-term changes, possibly implying a role for the cumulative burden of infections in prostate cancer risk.

SUBMITTER: Langston ME

PROVIDER: S-EPMC6690490 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature

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Sustained influence of infections on prostate-specific antigen concentration: An analysis of changes over 10 years of follow-up.

Langston Marvin E ME Pakpahan Ratna R Nevin Remington L RL De Marzo Angelo M AM Elliott Debra J DJ Gaydos Charlotte A CA Isaacs William B WB Nelson William G WG Sokoll Lori J LJ Zenilman Jonathan M JM Platz Elizabeth A EA Sutcliffe Siobhan S

The Prostate 20180530 13

<h4>Background</h4>To extend our previous observation of a short-term rise in prostate-specific antigen (PSA) concentration, a marker of prostate inflammation and cell damage, during and immediately following sexually transmitted and systemic infections, we examined the longer-term influence of these infections, both individually and cumulatively, on PSA over a mean of 10 years of follow-up in young active duty U.S. servicemen.<h4>Methods</h4>We measured PSA in serum specimens collected in 1995- ...[more]

PMID: 30133756

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Project description:BackgroundMost recurrences of non-small cell lung cancer (NSCLC) after lung resection occur within 5 years, which is why 5-year overall survival rates are used to give prognoses for lung cancer. Elderly individuals also often show comorbidities and may die from other diseases. Few studies have examined the long-term prognosis of elderly patients with NSCLC, and no reports have investigated drop-out from follow-up after resection of NSCLC, including in elderly patients. This retrospective cohort study analyzed and surveyed long-term prognosis and drop-out from follow-up, including in elderly patients, after resection of lung cancer.MethodsWe identified 349 consecutive patients after lung resection between January 2009 and March 2011. Twenty-two cases were excluded because of small cell lung cancer, past metachronous multiple lung cancers, recurrences of lung cancer, surgical biopsy, and other reasons. We investigated recurrences and causes of death in all patients and defined cases for which follow-up could not be conducted even by telephone or documentation from patients or the public office as cases of drop-out from follow-up.ResultsOf the 327 cases analyzed, 81 cases dropped out from follow-up and 246 cases completed >10 years of follow-up. Multivariable analysis demonstrated age ≥75 years [odds ratio 1.83; 95% confidence interval (CI): 1.01-3.32] and female sex (odds ratio 1.87, 95% CI: 1.06-3.3) as independent risk factors for drop-out from follow-up. Recurrence was detected >5 years after surgery in 5 cases (2.0%, 5/246 cases). Five- and 10-year overall survival rates were 67.2% and 52.9% for patients <75 years of age, and 42.1% and 21.1% for patients of age ≥75 years (P<0.001). Overall survival was significantly better for those of age <75 years than for those of age ≥75 years. Disease-specific survival did not differ significantly between groups (5-year disease-specific survival rate: 71.9% vs. 73.4%; 10-year disease-specific survival: 66.0% vs. 61.2%, P=0.80). Using Cox proportional hazard regression, age ≥75 years (hazard ratio 2.221; 95% CI: 1.507-3.274; P<0.001) and stage ≥2 (hazard ratio 2.628; 95% CI: 1.868-3.698; P<0.001) were significantly associated with overall survival.ConclusionsIn patients with NSCLC after lung resection, age ≥75 years and female sex were risk factors for dropping out from follow-up over 10 years. In addition, patients ≥75 years of age have a high possibility of dying from other diseases and sufficient consideration of and informed consent for surgical indications are necessary.

Project description:PurposeTo assess longer-term patterns of glaucoma medication adherence and identify whether patterns established during the first year of medication use persist during 3 subsequent years of follow-up.DesignRetrospective, longitudinal cohort analysis.ParticipantsBeneficiaries aged ≥40 years who were enrolled in a United States (US)-managed care plan for ≥7 years between 2001 and 2012 and newly diagnosed and treated for open-angle glaucoma.MethodsFor each enrollee, we quantified medication adherence using the medication possession ratio. Group-based trajectory modeling (GBTM) was applied to identify patterns of adherence for 1 and 4 years of follow-up. The percent of beneficiaries who remained in the same trajectory group in the 1- and 4-year models was tabulated to evaluate group stability. Factors impacting adherence at 1 and 4 years were identified using regression analyses.Main outcome measuresPatterns of glaucoma medication adherence.ResultsOf the 1234 eligible beneficiaries, GBTM identified 5 distinct glaucoma medication adherence patterns in both the 1-year and 4-year follow-up periods. These groups were as follows: (1) never adherent after their index prescription fill (7.5% and 15.6% of persons in the 1- and 4-year models, respectively); (2) persistently very poor adherence (14.9% and 23.4% of persons in the 1- and 4-year models, respectively); (3) declining adherence (9.5% and 9.1% of persons in the 1- and 4-year models, respectively); (4) persistently moderate adherence (48.1% and 37.0% of persons in the 1- and 4-year models, respectively); and (5) persistently good adherence (20.0% and 15.0% of persons in the 1- and 4-year models, respectively). More than 90% of beneficiaries in the 4 groups with the worst and best adherence patterns (groups 1, 2, 3, 5) maintained their patterns from their first year throughout their 4 years of follow-up. Those with persistently moderate adherence (group 4), the largest group, were most likely to change groups from 1 to 4 years of follow-up. Persons with the best adherence over 4 years were more likely to be white, to be older, to earn >$60 000/year, and to have more eye care visits (P < 0.05 for all comparisons). Those with a higher initial copayment cost had lower adherence rates (β = -0.06/dollar, P = 0.03).ConclusionsFor most patients who were newly prescribed glaucoma medications, adherence patterns observed in the first year of treatment reflect adherence patterns over the subsequent 3 years. Investing resources in both identifying and helping patients with suboptimal adherence patterns over the first year may have a large impact on longer-term adherence.

Project description:BackgroundHuman papillomavirus-related oropharyngeal cancer (HPV-OPC) incidence is increasing, but the natural history of the precursor-oral HPV-has not been well described.MethodsThis observational cohort study of people living with HIV and at-risk HIV uninfected people evaluated participants semiannually using 30-second oral rinse and gargle specimens over 7 years. Initially, 447 participants were followed for 4 years as part of the Persistent Oral Papillomavirus Study, and a subset of 128 who showed persistent infections at the last Persistent Oral Papillomavirus Study visit had an additional visit, as part of the Men and Women Understanding Throat HPV Study, on average 2.5 years later. Extracted DNA from oral rinse and gargle specimens was amplified using polymerase chain reaction and type specification of 13 oncogenic HPV types. Risk factors for oncogenic oral HPV clearance were evaluated using Cox models.ResultsThe majority of oncogenic oral HPV infections cleared quickly, with a median time to clearance of 1.4 years (interquartile range = 0.5-3.9 years). After 7 years of follow-up, 97% of incident and 71% of prevalent infections had cleared. Lower HPV-16 viral load was statistically significantly associated with clearance (per 10-fold decrease in copy number: adjusted hazard ratio [aHR] = 2.51, 95% confidence interval [CI] = 1.20 to 5.26; P = .01). Adjusted analyses showed that oncogenic oral HPV clearance was lower among prevalent than incident-detected infections (aHR = 0.44, 95% CI = 0.35 to 0.55), among men than women (aHR = 0.74, 95% CI = 0.60 to 0.91), for older participants (aHR per 10 years increasing age = 0.81, 95% CI = 0.74 to 0.89), and among people living with HIV (aHR = 0.76, 95% CI = 0.60 to 0.95). One participant who had oral HPV-16 consistently detected at 10 study visits over 4.5 years was subsequently diagnosed with HPV-OPC.ConclusionsThis prospective study of oncogenic oral HPV infection is the longest and largest quantification of oral HPV-16 infections to date.

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Dataset Information

Sustained influence of infections on prostate-specific antigen concentration: An analysis of changes over 10 years of follow-up.

Publications

Sustained influence of infections on prostate-specific antigen concentration: An analysis of changes over 10 years of follow-up.

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