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1.
Curr Med Res Opin ; 40(3): 505-516, 2024 03.
Artículo en Inglés | MEDLINE | ID: mdl-38258436

RESUMEN

OBJECTIVE: To assess the journey of individuals from experiencing a traumatic event through onset of symptoms, diagnosis, and treatment of posttraumatic stress disorder (PTSD). METHODS: Patient- and psychiatrist-level data was collected (02/2022-05/2022) from psychiatrists who treated ≥1 civilian adult diagnosed with PTSD. Eligible charts covered civilian adults diagnosed with PTSD (2016-2020), receiving ≥1 PTSD-related treatment (selective serotonin reuptake inhibitors [SSRIs], serotonin-norepinephrine reuptake inhibitors [SNRIs], atypical antipsychotics [AAs]), and having ≥1 medical visit in the last 12 months. Collected information included clinical and treatment characteristics surrounding the PTSD diagnosis. RESULTS: A total of 273 psychiatrists contributed data on 687 patients with PTSD (average age 36.1; 60.4% female). On average, the traumatic event and symptom onset occurred 8.7 years and 6.5 years prior to PTSD diagnosis, respectively. In the 6 months before diagnosis, 88.9% of patients had received a PTSD-related treatment. At time of diagnosis, 87.8% of patients had intrusion symptoms and 78.9% had alterations in cognition/mood; 41.2% had depressive disorder and 38.7% had anxiety. Diagnosis prompted treatment changes for 79.3% of patients, receiving treatment within 1.9 months on average, often with a first-line SSRI as either monotherapy (52.8%) or combination (24.9%). At the end of the 24-month study period, 34.4% of patients achieved psychiatrist-recorded remission. A total of 23.0% of psychiatrists expressed dissatisfaction with approved PTSD treatments, with 88.3% at least somewhat likely to prescribe AAs despite lack of FDA approval. CONCLUSION: PTSD presents heterogeneously, with an extensive journey from trauma to diagnosis with low remission rates and limited treatment options.


Asunto(s)
Antipsicóticos , Trastornos por Estrés Postraumático , Adulto , Humanos , Femenino , Masculino , Trastornos por Estrés Postraumático/diagnóstico , Trastornos por Estrés Postraumático/tratamiento farmacológico , Inhibidores Selectivos de la Recaptación de Serotonina/uso terapéutico , Ansiedad , Antipsicóticos/uso terapéutico
2.
J Affect Disord ; 349: 107-115, 2024 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-38154583

RESUMEN

BACKGROUND: The effect of depressive symptoms on individuals has been widely studied but their impact on households remains less explored. This study assessed the humanistic and economic impact of living with an adult with depressive symptoms on adults without depressive symptoms among households in the United States (US). METHODS: The Medical Expenditure Panel Survey (MEPS) Household Component database was used to identify adults without depressive symptoms living in households with ≥1 adult with depressive symptoms (depression household) and adults without depressive symptoms living in households without an adult with depressive symptoms (no-depression household). Weighted generalized linear models with clustered standard errors were used to compare total income (USD 2020), employment status, workdays missed, quality of life (QoL), and healthcare resource utilization (HRU) between cohorts. RESULTS: Adults without depressive symptoms living in a depression household (n = 1699) earned $4720 less in total annual income (representing 11.3% lower than the average income of $41,634 in MEPS), were less likely to be employed, missed more workdays per year, and had lower QoL than adults without depressive symptoms living in a no-depression household (n = 15,286). Differences in total annual healthcare costs and for most types of HRU, except for increased outpatient mental health-related visits, were not significant. LIMITATIONS: Data is subject to reporting bias, misclassification, and other inaccuracies. Causal inferences could not be established. CONCLUSION: The economic and humanistic consequences of depressive symptoms may extend beyond the affected adults and impact other adult members of the household.


Asunto(s)
Depresión , Calidad de Vida , Adulto , Humanos , Estados Unidos/epidemiología , Depresión/epidemiología , Composición Familiar , Renta , Costos de la Atención en Salud
3.
Curr Med Res Opin ; : 1-10, 2023 Oct 10.
Artículo en Inglés | MEDLINE | ID: mdl-37817472

RESUMEN

OBJECTIVE: To describe post-traumatic stress disorder (PTSD)-related symptoms and frequent psychiatric comorbidities, treatments received, healthcare resource utilization (HRU), and healthcare costs pre- and post-PTSD diagnosis among adults in the United States. METHODS: Adults with PTSD who received a PTSD-related pharmacological treatment (selective serotonin reuptake inhibitor [SSRI], serotonin-norepinephrine reuptake inhibitor [SNRI], atypical antipsychotic [AA]) within 24 months of the first observed PTSD diagnosis (index date) were identified using MarketScan Commercial Database (2015-2020). Study outcomes were assessed during the 6-month pre-diagnosis and 24-month post-diagnosis periods. Subgroup analyses included patients treated or not treated with AAs post-PTSD diagnosis. RESULTS: Of the overall patients (N = 26,306; mean age at diagnosis 39.5 years; 73.3% female), 85.9% had PTSD-related symptoms and frequent psychiatric comorbidities during the 6 months pre-diagnosis. Patients treated with AAs post-PTSD diagnosis (N = 9,298) tended to have higher rates of PTSD-related symptoms and comorbidities at diagnosis than those not treated with AAs (N = 7,011). Following diagnosis, the most commonly observed first-line treatments were SSRI (67.4%), AA (23.4%), and SNRI (22.6%). The rate of PTSD-related symptoms and comorbidities, psychotherapy and pharmacological treatments received, HRU, and healthcare costs increased during the 6 months post-diagnosis relative to the 6 months pre-diagnosis and then declined over time during the 24 months post-diagnosis. CONCLUSIONS: The PTSD diagnosis was associated with increased rates of symptoms and frequent psychiatric comorbidities, psychotherapy and pharmacological treatments received, HRU, and healthcare costs, pointing to increased patient monitoring. Within 6 to 12 months after the PTSD diagnosis, these outcomes tended to reduce, perhaps as patients were obtaining targeted and effective care.

4.
Adv Ther ; 40(10): 4460-4479, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37518849

RESUMEN

INTRODUCTION: Previous societal burden estimations for major depressive disorder (MDD) often fail to account for several hidden cost components. This study provides a comprehensive evaluation of societal costs for adults with MDD in the United States (USA) in 2019. The potential impact of a more effective, rapid-acting MDD therapy vs standard of care on the economic burden of MDD was estimated to illustrate the utility of such a framework in evaluating new interventions. METHODS: This study used a prevalence-based human capital approach. Incremental costs (2019 US dollars) per individual with MDD were derived from national survey inputs and published literature and included incremental healthcare costs and indirect costs. For each cost component, the societal costs were extrapolated by multiplying the per-patient costs by the number of individuals with MDD. The impact of a more effective, rapid-acting novel therapy on the economic burden of MDD was then simulated on the basis of these inputs. RESULTS: In 2019, the number of adults with MDD in the USA was estimated at 19.8 million (62.7% female; 32.9% severe MDD), and the incremental societal economic burden of MDD was estimated at $333.7 billion ($382.4 billion in 2023 US dollars), or $16,854 per adult with MDD. The primary cost drivers were healthcare costs ($127.3 billion; 38.1%), household-related costs ($80.1 billion; 24.0%), presenteeism ($43.3 billion; 13.0%), and absenteeism ($38.4 billion; 11.5%). In the simulated scenario, a hypothetical novel therapy with a 50.0% early response rate was associated with a 7.7% reduction in the economic burden of MDD relative to standard of care over 12 months. CONCLUSIONS: The economic burden of MDD is substantial and extends beyond healthcare costs, underscoring the impact of MDD across multiple aspects of life. Such a broad societal perspective should be considered in assessing the impact of the advent of effective, rapid-acting MDD therapies.


Asunto(s)
Trastorno Depresivo Mayor , Humanos , Adulto , Femenino , Estados Unidos/epidemiología , Masculino , Trastorno Depresivo Mayor/epidemiología , Trastorno Depresivo Mayor/terapia , Estrés Financiero , Costo de Enfermedad , Costos de la Atención en Salud , Prevalencia
5.
Adv Ther ; 40(5): 2265-2281, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-36913128

RESUMEN

INTRODUCTION: Patients with attention-deficit/hyperactivity disorder (ADHD) often have psychiatric comorbidities that may confound diagnosis and affect treatment outcomes and costs. The current study described treatment patterns and healthcare costs among patients with ADHD and comorbid anxiety and/or depression in the United States (USA). METHODS: Patients with ADHD initiating pharmacological treatments were identified from IBM MarketScan Data (2014-2018). The index date was the first observed ADHD treatment. Comorbidity profiles (anxiety and/or depression) were assessed during the 6-month baseline period. Treatment changes (discontinuation, switch, add-on, drop) were examined during the 12-month study period. Adjusted odds ratios (ORs) of experiencing a treatment change were estimated. Adjusted annual healthcare costs were compared between patients with and without treatment changes. RESULTS: Among 172,010 patients with ADHD (children [aged 6-12] N = 49,756; adolescents [aged 13-17] N = 29,093; adults [aged 18 +] N = 93,161), the proportion of patients with anxiety and depression increased from childhood to adulthood (anxiety 11.0%, 17.7%, 23.0%; depression 3.4%, 15.7%, 19.0%; anxiety and/or depression 12.9%, 25.4%, 32.2%). Compared with patients without the comorbidity profile, those with the comorbidity profile experienced a significantly higher odds of a treatment change (ORs [children, adolescents, adults] 1.37, 1.19, 1.19 for those with anxiety; 1.37, 1.30, 1.29 for those with depression; and 1.39, 1.25, 1.21 for those with anxiety and/or depression). Excess costs associated with a treatment change were generally higher with more treatment changes. Among patients with three or more treatment changes, annual excess costs per child, adolescent, and adult were $2234, $6557, and $3891 for those with anxiety; $4595, $3966, and $4997 for those with depression; and $2733, $5082, and $3483 for those with anxiety and/or depression. CONCLUSIONS: Over 12 months, patients with ADHD and comorbid anxiety and/or depression were significantly more likely to experience a treatment change than those without these psychiatric comorbidities and incurred higher excess costs with additional treatment changes.


Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad , Adulto , Niño , Adolescente , Humanos , Estados Unidos/epidemiología , Adulto Joven , Trastorno por Déficit de Atención con Hiperactividad/complicaciones , Trastorno por Déficit de Atención con Hiperactividad/tratamiento farmacológico , Trastorno por Déficit de Atención con Hiperactividad/epidemiología , Estudios Retrospectivos , Depresión/epidemiología , Revisión de Utilización de Seguros , Ansiedad/epidemiología , Comorbilidad , Costos de la Atención en Salud
6.
BMC Psychiatry ; 22(1): 555, 2022 08 18.
Artículo en Inglés | MEDLINE | ID: mdl-35982469

RESUMEN

BACKGROUND: Attention-deficit/hyperactivity disorder (ADHD) is a common neurobehavioral disorder affecting approximately 10.0% of children and 6.5% of adolescents in the United States (US). A comprehensive assessment of the current treatment landscape is warranted to highlight potential unmet needs of children and adolescents with ADHD. Therefore, this study described treatment patterns and healthcare costs among commercially insured children and adolescents with ADHD in the US. METHODS: Children and adolescents with ADHD initiating pharmacological treatment indicated for ADHD were identified from IBM MarketScan Commercial Database (2014-2018). A treatment sequence algorithm was used to examine treatment patterns, including discontinuation (≥ 180 days following the last day of supply of any ADHD treatment), switch, add-on, and drop (discontinuation of an agent in combination therapy), during the 12-month study period following the index date (i.e., first observed ADHD treatment). Total adjusted annual healthcare costs were compared between patients with and without treatment changes. RESULTS: Among 49,756 children and 29,093 adolescents included, mean age was 9 and 15 years, respectively, and 31% and 38% were female. As the first treatment regimen observed, 92% of both children and adolescents initiated a stimulant and 11% initiated combination therapy. Over half of the population had a treatment change over 12 months-59% of children and 68% of adolescents. Treatment discontinuation over 12 months was common in both populations-21% of children and 36% of adolescents discontinued treatment. Healthcare costs increased with the number of treatment changes observed; children and adolescents with treatment changes (i.e., 1, 2, or ≥ 3) incurred an incremental annual cost of up to $1,443 and $2,705, respectively, compared to those without a treatment change (p < 0.001). Costs were largely driven by outpatient visits. CONCLUSIONS: Over a 12-month period, treatment changes were commonly observed and were associated with excess costs, highlighting the unmet treatment needs of children and adolescents with ADHD in the US.


Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad , Estimulantes del Sistema Nervioso Central , Adolescente , Trastorno por Déficit de Atención con Hiperactividad/tratamiento farmacológico , Niño , Femenino , Costos de la Atención en Salud , Humanos , Revisión de Utilización de Seguros , Masculino , Estudios Retrospectivos , Estados Unidos
7.
J Clin Psychiatry ; 83(3)2022 04 25.
Artículo en Inglés | MEDLINE | ID: mdl-35485933

RESUMEN

Objective: To estimate the economic burden of posttraumatic stress disorder (PTSD) in the United States civilian and military populations from a societal perspective.Methods: A prevalence-based and human capital approach was used to estimate the total excess costs of PTSD in 2018 from insurance claims data, academic literature, and governmental publications. Excess direct health care costs (pharmacy, medical), direct non-health care costs (research and training, substance use, psychotherapy, homelessness, disability), and indirect costs (unemployment, productivity loss, caregiving, premature mortality) associated with PTSD were compared between adults with PTSD and adults without PTSD, or the general population if information was not available for adults without PTSD.Results: The total excess economic burden of PTSD in the US was estimated at $232.2 billion for 2018 ($19,630 per individual with PTSD). Total excess costs were $189.5 billion (81.6%) in the civilian population and $42.7 billion (18.4%) in the military population, corresponding to $18,640 and $25,684 per individual with PTSD in the civilian and military populations, respectively. In the civilian population, the excess burden was driven by direct health care ($66.0 billion) and unemployment ($42.7 billion) costs. In the military population, the excess burden was driven by disability ($17.8 billion) and direct health care ($10.1 billion) costs.Conclusions: The economic burden of PTSD goes beyond direct health care costs and has been found to rival costs for other costly mental health conditions. Increased awareness of PTSD, development of more effective therapies, and expansion of evidence-based interventions may be warranted to reduce the large clinical and economic burden of PTSD.


Asunto(s)
Estrés Financiero , Trastornos por Estrés Postraumático , Adulto , Costo de Enfermedad , Eficiencia , Costos de la Atención en Salud , Humanos , Trastornos por Estrés Postraumático/epidemiología , Trastornos por Estrés Postraumático/terapia , Estados Unidos/epidemiología
8.
Adv Ther ; 39(5): 2178-2191, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-35298784

RESUMEN

INTRODUCTION: Opioid-induced constipation (OIC) prescription medications (OIC-Rx) like methylnaltrexone subcutaneous (SC) have shown efficacy in treating OIC in the emergency department (ED). This study aimed to describe and compare healthcare resource utilization (HRU) and healthcare costs in ED patients with OIC receiving OIC-Rx versus those not receiving OIC-Rx. METHODS: Adult patients with OIC during an ED encounter were identified from a hospital-based ED encounters database (2016-2019) and classified on the basis of receipt of OIC-Rx (OIC-Rx versus No OIC-Rx cohorts). Entropy balancing was used to reweight characteristics of the two cohorts. HRU and healthcare costs were measured and compared during the ED encounter and 30-day post-discharge period. RESULTS: Among 11,135 patients in the OIC-Rx cohort (21,474 in the No OIC-Rx cohort), 93% received methylnaltrexone SC. Patients in the OIC-Rx cohort had 0.7 fewer inpatient days per OIC ED encounter and 64% decreased odds of being hospitalized versus the No OIC-Rx cohort (both p < 0.001). During the post-discharge period, the OIC-Rx cohort had 35% decreased odds of any re-encounter (p < 0.001). The OIC-Rx cohort had a $732 reduction in costs per OIC ED encounter versus the No OIC-Rx cohort (p < 0.001), driven by larger hospitals and patients with Medicare or Commercial insurance. During the post-discharge period, the OIC-Rx cohort had a $421 reduction in costs associated with any re-encounter versus the No OIC-Rx cohort (p = 0.004). CONCLUSION: Patients receiving OIC-Rx in the ED had decreased odds of being hospitalized and fewer re-encounters in the 30-day post-discharge period versus patients who did not receive OIC-Rx, resulting in cost savings for insurance agencies and healthcare providers.


Asunto(s)
Estreñimiento Inducido por Opioides , Adulto , Cuidados Posteriores , Anciano , Analgésicos Opioides/efectos adversos , Estreñimiento/inducido químicamente , Estreñimiento/tratamiento farmacológico , Servicio de Urgencia en Hospital , Humanos , Medicare , Alta del Paciente , Estados Unidos
9.
Nephrol Nurs J ; 48(5): 447-461, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34756000

RESUMEN

Nephrology nurses face health and wellness challenges due to significant work-related stressors. This survey, conducted online between July 24 and August 17, 2020, assessed the psychological well-being of nephrology nurses in the United States during the COVID-19 pandemic (n = 393). Respondents reported feeling burned out from work (62%), symptoms of anxiety (47% with Generalized Anxiety Disorder-7 [GAD-7] scores ≥ 5), and major depressive episodes (16% with Patient Health Questionnaire-2 [PHQ-2] scores ≥ 3). Fifty-six percent (56%) of survey respondents reported caring for COVID-19 patients, and 62% were somewhat or very worried about COVID-19. Factors, including high workload, age, race, and the COVID-19 pandemic, may partially explain the high proportion of nephrology nurses who reported symptoms of burnout, anxiety, and depression.


Asunto(s)
COVID-19 , Trastorno Depresivo Mayor , Nefrología , Enfermeras y Enfermeros , Ansiedad/epidemiología , Ansiedad/etiología , Estudios Transversales , Depresión/epidemiología , Humanos , Salud Mental , Pandemias , Calidad de Vida , SARS-CoV-2 , Encuestas y Cuestionarios , Estados Unidos/epidemiología
10.
Curr Med Res Opin ; 37(11): 2007-2014, 2021 11.
Artículo en Inglés | MEDLINE | ID: mdl-34427164

RESUMEN

OBJECTIVE: To assess treatment patterns in adults with attention-deficit/hyperactivity disorder (ADHD) and associated healthcare costs in a real-world US setting. METHODS: Claims data from the IBM MarketScan Commercial Subset (Q1/2014-Q4/2018) was used to identify adults diagnosed with ADHD who newly initiated on ADHD treatment (index date). Treatment sequences were defined using an algorithm; for each sequence, the regimen comprised all ADHD-related agents observed within 30 d of the first agent during the 12-month study period. Treatment changes included discontinuation, switch, add-on, and drop. Treatment characteristics were described for the first treatment regimen observed. Total adjusted annual healthcare costs were compared between patients with no treatment change and patients with 1, 2, and ≥3 treatment changes. RESULTS: Among 122,881 adults with ADHD, the majority initiated a stimulant (95.1%) as their first treatment regimen observed; 9.3% of patients initiated combination therapy of ≥2 ADHD-related agents, and 34.9% of patients had psychotherapy. After an average first treatment regimen duration of 7.1 months, 50.2% of patients experienced a treatment change (22.5% discontinued, 17.5% switched, 5.3% had an add-on, and 4.6% had a treatment drop). Among those who discontinued, 44.8% did so within the first month of initiation. Mean annual healthcare costs were higher among patients with at least 1 treatment change compared to those with no treatment changes; excess costs increased with each additional treatment change. CONCLUSIONS: Treatment changes were commonly observed and were associated with excess healthcare cost, emphasizing the unmet treatment needs of adults with ADHD in the US.


Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad , Estimulantes del Sistema Nervioso Central , Adulto , Trastorno por Déficit de Atención con Hiperactividad/tratamiento farmacológico , Trastorno por Déficit de Atención con Hiperactividad/epidemiología , Estimulantes del Sistema Nervioso Central/uso terapéutico , Costos de la Atención en Salud , Humanos , Estudios Retrospectivos , Estados Unidos/epidemiología
11.
Curr Med Res Opin ; 37(7): 1155-1162, 2021 07.
Artículo en Inglés | MEDLINE | ID: mdl-33970726

RESUMEN

OBJECTIVES: To evaluate geographic variation in the prevalence of autosomal dominant polycystic kidney disease (ADPKD) in the US, including ADPKD at risk of rapid progression. METHODS: Claims data from the IBM MarketScan Commercial and Medicare Supplemental databases (01/16/2016-12/31/2017) were used to estimate the 2017 annual and 2016-2017 two-year prevalence of diagnosed ADPKD and ADPKD at risk of rapid progression in the US overall, and stratified by census regions and states. Risk of rapid progression was identified based on either: hypertension <35 years, hematuria <30 years, albuminuria, stage 2 chronic kidney disease (CKD) <30 years, stage 3 CKD <50 years, and stage 4/5 CKD or kidney transplant <55 years. RESULTS: Annual prevalence was estimated at 2.34 and two-year prevalence at 3.61 per 10,000 in the US. Across census regions, two-year prevalence per 10,000 was highest in the Northeast (4.14) and lowest in the West (3.35). Prevalence was significantly correlated with the proportion of individuals in urban areas (r = .34, one-sided p = .026). In 2017, 37.5% of patients were identified as being at risk for rapid progression, and this proportion was larger among patients in the South (42.1%, p < .001). CONCLUSION: This estimate for ADPKD prevalence is consistent with previously reported national estimates, with regional variation suggesting that ADPKD might be under-diagnosed in rural areas with more limited access to care. More than one-third of ADPKD patients presented risk factors associated with rapid progression, highlighting the need for timely identification, as disease-modifying therapy may delay progression to end-stage renal disease.


Asunto(s)
Fallo Renal Crónico , Riñón Poliquístico Autosómico Dominante , Insuficiencia Renal Crónica , Anciano , Progresión de la Enfermedad , Humanos , Fallo Renal Crónico/epidemiología , Fallo Renal Crónico/etiología , Medicare , Riñón Poliquístico Autosómico Dominante/epidemiología , Prevalencia , Estados Unidos/epidemiología
12.
J Food Prot ; 76(2): 272-82, 2013 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-23433375

RESUMEN

Ready-to-eat (RTE) deli meats are considered a food at high risk for causing foodborne illness. Deli meats are listed as the highest risk RTE food vehicle for Listeria monocytogenes. Cross-contamination in the retail deli market may contribute to spread of pathogens to deli meats. Understanding potential cross-contamination pathways is essential for reducing the risk of contaminating various products. The objective of this study was to track cross-contamination pathways through a mock retail deli market using an abiotic surrogate, GloGerm, to visually represent how pathogens may spread through the deli environment via direct contact with food surfaces. Six contamination origination sites (slicer blade, meat chub, floor drain, preparation table, employee's glove, and employee's hands) were evaluated separately. Each site was inoculated with 20 ml of GloGerm, and a series of standard deli operations were completed (approximately 10 min of work). Photographs were then taken under UV illumination to visualize spread of GloGerm throughout the deli. A sensory panel evaluated the levels of contamination on the resulting contaminated surfaces. Five of the six contamination origination sites were associated with transfer of GloGerm to the deli case door handle, slicer blade, meat chub, preparation table, and the employee's gloves. Additional locations became contaminated (i.e., deli case shelf, prep table sink, and glove box), but this contamination was not consistent across all trials. Contamination did not spread from the floor drain to any food contact surfaces. The findings of this study reinforce the need for consistent equipment cleaning and food safety practices among deli workers to minimize cross-contamination.


Asunto(s)
Contaminación de Equipos , Contaminación de Alimentos/análisis , Contaminación de Alimentos/prevención & control , Manipulación de Alimentos/métodos , Productos de la Carne/microbiología , Seguridad de Productos para el Consumidor , Comida Rápida/microbiología , Microbiología de Alimentos , Guantes Protectores , Humanos
13.
Int J Food Microbiol ; 149(2): 113-7, 2011 Sep 15.
Artículo en Inglés | MEDLINE | ID: mdl-21719138

RESUMEN

Fresh and fresh-cut tomatoes have been associated with numerous outbreaks of salmonellosis in recent years. One effective post harvest treatment to reduce Salmonella enterica in tomatoes may be high pressure processing (HPP). The objectives of the study were to determine the potential for HPP to reduce S. enterica serovars Newport, Javiana, Braenderup and Anatum in tryptic soy broth (TSB) and to determine the effect of HPP to reduce the most pressure resistant of the four serovars from fresh diced and whole tomatoes. To evaluate pressure resistance, TSB containing 8 log CFU/ml of one of the four serovars was packaged in sterile stomacher bags and subjected to one of three different pressures (350, 450 or 550MPa) for 120s. The most pressure resistant S. enterica serovar evaluated was Braenderup. Subjecting the broth culture to 350, 450 and 550MPa resulted in a 4.53, 5.74 and 7.09 log reduction in S. Braenderup, respectively. Diced tomatoes (150g) and whole red round tomatoes (approximately 150g) were inoculated with 0.1ml of 9.1 log CFU/ml S. Braenderup, and subjected to the same pressure treatments (350, 450 or 550MPa). Significant reductions of S. Braenderup concentrations in diced tomatoes (P<0.05) were seen after processing at 350 (0.46CFU/g), 450 (1.44 log CFU/g), and 550MPa (3.67 log CFU/g). In whole tomatoes, significant reductions (P<0.05) were also seen at 350 (1.41 log CFU/g), 450 (2.25 log CFU/g) and 550MPa (3.35 log CFU/g). HPP may be an effective post harvest strategy to reduce low levels of S. enterica contamination in whole and diced tomatoes.


Asunto(s)
Manipulación de Alimentos/métodos , Microbiología de Alimentos , Salmonella enterica/fisiología , Solanum lycopersicum/microbiología , Presión Hidrostática , Intoxicación Alimentaria por Salmonella/prevención & control , Estrés Fisiológico
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