Temporal optimization of exercise to lower fasting glucose levels

Exercise stimulates glucose uptake and increases insulin sensitivity acutely. Temporally optimizing exercise timing may minimize the nocturnal rise in glucose levels. This study examined the effect of exercise timing on evening and overnight glucose concentrations in individuals who were non-obese with normal fasting glucose levels (Non-Ob; n = 18) and individuals with obesity (OB) with impaired fasting glucose levels (OB+IFG) and without (n = 16 and n = 18, respectively). Subjects were studied on three occasions (no exercise (NOEX)), morning exercise (AMEX; 0700 h) and evening exercise (PMEX; 2000 h). The evening meal was provided (1800 h) and blood samples were taken from 1740 to 0700 h and morning endogenous glucose production (EGP) was measured. Glucose and insulin concentrations increased with the dinner meal with peak concentrations being higher in OB+IFG than in OB and Non-Ob (P = 0.04). In OB+IFG, evening glucose concentrations rose above baseline levels at about 2300 h, with the glucose concentrations staying somewhat lower with AMEX and PMEX until ∼0500 h than with NOEX. In OB+IFG, insulin concentrations decreased following the dinner meal and waned throughout the night, despite the rising glucose concentrations. In the OB and Non-Ob individuals following the dinner meal, no increase in glucose concentrations occurred in the evening period and insulin levels mirrored this. No difference was observed in the morning fasting glucose levels between study days or between groups. Regardless of time of day, exercise delays the evening rise in glucose concentrations in adults with OB+IFG but does not lower morning fasting glucose levels or improve the synchrony between glucose and insulin concentrations. KEY POINTS: Insulin resistance and type 2 diabetes have been linked to disturbances of the core clock, and glucose tolerance demonstrates a diurnal rhythm in healthy humans with better glucose tolerance in the morning than in the afternoon and evening. Skeletal muscle is a primary site for insulin resistance in people with impaired glucose tolerance. In individuals with obesity and impaired fasting glucose levels (OB+IFG), following a dinner meal, glucose concentrations started to rise and continues throughout the night, resulting in elevated glucose levels, while concomitantly, insulin levels are waning. Exercise, regardless of the time of day, suppressed the rise in glucose levels in OB+IFG for many hours during the night but did not lower morning fasting glucose levels. Morning exercise was not quite as effective as evening exercise.

Cost-effectiveness of the cardiovascular pre-participation screening in children practicing sport

Funding Acknowledgements

Type of funding sources: None.

Introduction

In Italy, preparticipation screening of competitive athletes is mandatory. The age at which pre-participation screening (PPS) should start is established by each sport federation and it is sometimes under 10 years old. The aim of this study is to detect both PPS efficacy and cost in paediatric age and to define the cut-off age from which it is more cost-effective.

Methods

We retrospectively enrolled 25251 athletes aged ≤15 to evaluate the prevalence of cardiovascular (CV) diseases and cost-effectiveness ratio who underwent PPS from 2011 to 2020. In addition, we retrospectively studied a subgroup of 1307 competitive athletes aged 7-15 who underwent PPS from January 2019 to February 2020 for an in-depth analysed regarding costs. Cardiovascular preparticipation screening included first-line investigations (history, physical examination, resting ECG and exercise testing) and further examinations in case of abnormalities at first-line tests.

Results

In the period 2010-2020, 66 athletes were permanently disqualified for a CV disease (0,11%), 26 for a CV disease at risk of sudden cardiac death (0.05%), with a prevalence of 0.15% over 12 years old versus 0.01% under 12 (p<0.001). In the cost analysis subgroup, second-line investigations were prescribed to 5% of athletes because of abnormalities at first line tests: 1 was disqualified for a CV disease (0,07%). The cost for each athlete was 69,80€. Between 2011 and 2020, 58185 PPS were carried out. The overall cost of PPS was about €4 million, the cost for each diagnosis of any CV disease was 61.535€, and for each CV disease at risk of sudden cardiac death was 156.204€.

Conclusion

The cost-effectiveness of PPS before competitive sports in the pediatric age is lower than reported for older athletes in previously published studies. According to our data, starting PPS before 12 years of age does not appear to be justified.

A Case of Prolonged Hospital Acquired COVID-19 Pneumonia in a Lung Transplant Recipient: Management and Outcome

Introduction

Lung transplant recipients are at increased risk of SARS-CoV2 infection due to immunosuppression and their management has yet to be standardized. We report a case of prolonged COVID-19 infection in a lung recipient acquired after transplant during the hospital stay.

Case Report

A 52-year-old lady with interstitial disease associated to systemic sclerosis underwent bilateral lung transplantation on 04/10/21. Donors and recipient microbiological tests for SARS-CoV2 were negative on molecular swabs performed before transplantation (04/07 and 04/10). Transplantation was uneventful and the recipient was extubated the subsequent day. Twelve days later, a surveillance molecular nose-pharyngeal swab was positive for SARS-CoV2. The positivity for subgenomic analysis revealed productive infection. At first monitoring biopsy, multiple foci of diffuse alveolar damage, significant cytopathic features of pneumocytes, microthrombi of capillaries, and extensive edema were highly suggestive of COVID-19 pneumonia. High viral load was also detected in lung biopsy by RT-PCR. She presented mild respiratory symptoms (cough with low oxygen supplementation) and the CT scan revealed an area of consolidation at the right lower lobe. Monoclonal antibody therapy (Bamlanivimab and Etesevimab) associated with remdesevir was started, IV immunoglobulins were administered while mycophenolate mofetil was discontinued. The patient was closely monitored until the nose-pharyngeal swab turned negative two months after the first positivity associated with a significant clinical improvement. At the last follow-up, five months after transplantation, she had good pulmonary function, no immunological disorders and no signs related to long COVID-19.

Summary

This is a case of prolonged hospital acquired COVID-19 related pneumonia in a lung recipient. Immunocompromized patients present a longer viral clearance. In this fragile population a strict clinical, radiological and histopathological monitoring associated with encouragement of vaccination are mandatory.

Non–Small-Cell Lung Cancer: Real-World Cost Consequence Analysis

Background

The present work aimed at conducting a real-world data analysis on the management costs and survival analysis comparing data from non-small-cell lung cancer (NSCLC) cases diagnosed in the Veneto region before (2015) and after (2017) the implementation of a regional diagnostic and therapeutic pathway including all new diagnostic and therapeutic strategies.

Methods

This study considered 254 incidental cases of NSCLC in 2015 and 228 in 2017 within the territory of the Padua province (Italy), as recorded by the Veneto Cancer Registry. Tobit regression analysis was performed to verify if total and each item costs (2 years after NSCLC diagnosis) are associated with index year, adjusting by year of diagnosis, sex, age, and stage at diagnosis. Logistic regression models were run to study overall mortality at 2 years, adjusting by the same covariates.

Results

The 2017 cohort had a lower mortality odd (odds ratio, 0.93; P = .02) and a significant increase in the average overall costs (P = .009) than the 2015 cohort. The Tobit regression analysis by cost item showed a very significant increase in the average cost of drugs (coefficient = 5,953, P 5 .008) for the 2017 cohort, as well as a decrease in the average cost of hospice care (coefficient = -1,822.6, P = .022).

Conclusions

Our study showed a survival improvement for patients with NSCLC as well as an economic burden growth. Physicians should therefore be encouraged to follow new clinical care pathways, while the steadily rising related costs underscore the need for policymakers and health professionals to pursue the most rational utilization of public resources.

Key messages

Our work underscores the importance of real-world assessment of costs in oncology, especially in case of a disease like NSCLC, which has such a high impact on treatment costs and patient outcomes. New therapies prolong survival for patients with NSCLC but their sustainability reminds of the importance of prevention: the earlier the diagnosis, the longer the survival and the lower the costs.

Estimated direct costs of non-small-cell lung cancer by stage and care phase: a whole disease model

Background

Non-small-cell lung cancer (NSCLC) is the first cause of cancer-related death among men and the second among women worldwide. It also poses an economic threat to the sustainability of healthcare services. This study estimates the direct costs of care for patients with NSCLC by stage at diagnosis and management phase of pathway recommended in local and international guidelines.

Methods

Based on the most up-to-date guidelines we developed a detailed “whole-disease” model that lists the probabilities of all potentially necessary diagnostic and therapeutic actions involved in the management of each stage of NSCLC. Then we assigned the cost sustained by the public authorities to each procedure, obtaining an estimate of the total and average per-patient costs of each stage of the disease and management phase in Veneto Region, Italy.

Results

The mean expected cost of a patient with NSCLC is 22,968 € in the first year: 20,222 € in stage I, 23,935 € in stage II, 23,027 € in stage III, 22,915 € in stage IV and 31,749 € for Pancoast's tumors. In the second year the mean per patient-costs patient ranged from 2,722 €, for a patient with stage I disease, to 13,396 € for a patient with stage IV, with an overall average cost of 8,307 €. In the early stages, the main cost was due to surgery, whereas in the more advanced stages radiotherapy, medical therapy, treatment for progressions and supportive care become variously more important.

Conclusions

Our study enabled a prediction of the direct costs and outcomes for patients diagnosed with NSCLC on a two-year timeline after the diagnosis. An estimation of the direct costs of NSCLC, and in general for cancer, appears fundamental to predict the burden of new oncological therapies and treatments on healthcare services, and, in our opinion, our model could represent a useful tool for policy-makers in the optimization of resources allocation.

Key messages

Whole disease model allows an economic evaluation of a clinical pathway. The model is able to estimate direct costs of NSCLC by disease stage and management phase within a time horizon of two years. High cost-surgery makes the early stages no less expensive than advanced stages during the first year. In the second year, an advanced stage case costs almost five times more than an early stage case.

The role of immune microenvironment in small-cell lung cancer: Distribution of PD-L1 expression and prognostic role of FOXP3-positive tumour infiltrating lymphocytes

INTRODUCTION

The prognosis of small-cell lung cancer (SCLC) is dismal and new effective therapies are needed. Immunotherapy looks promising, but no molecular predictive markers are currently available, and data on immune microenvironment are very limited.

METHODS

We retrospectively analysed 104 SCLC cases. Immunohistochemistry evaluation of PD-L1 was performed both on tumour cells (TCs) and on tumour-infiltrating immune cells (TIICs) by using anti-PD-L1 22C3 antibody (DAKO) and categorised by using 1% as cut-off point. Tumour-infiltrating lymphocytes (TILs) were characterised by using anti-CD8 and anti-FOXP3 antibodies. Semi-quantitative score was used and categorised as positive versus negative/low. The relation of molecular markers with prognosis and with clinical variables was evaluated.

RESULTS

The analysis included 66 stage I-III patients (48 surgically resected, 18 treated with radical-intent chemoradiotherapy) and 38 metastatic cases. In the overall study population, PD-L1 was expressed on TCs and TIICs in 25% and 40% of cases, respectively. The proportion of PD-L1-positive cases was significantly higher in stage I-III versus metastatic patients (32% versus 13%, p: 0.034 for TCs; 51.5% versus 21% for TIICs, p: 0.002). CD8- and FOXP3-positive TILs were present in 59% and 72% of samples, respectively. The presence of FOXP3-TILs was associated with improved prognosis among non-metastatic patients, with a hazard ratio for survival of 0.32 (95% confidence interval [CI]: 0.16-0.7, p: 0.006) for univariate analysis, and 0.37 (95% CI: 0.17-0.81, p: 0.013) for multivariate analysis.

CONCLUSIONS

Immune contexture of SCLC may differ according to stage. The presence of FOXP3-positive TILs is a potential prognostic marker for stage I-III SCLCs and warrants further investigation.

Immediate and Catastrophic Antibody-Mediated Rejection in a Lung Transplant Recipient With Anti-Angiotensin II Receptor Type 1 and Anti-Endothelin-1 Receptor Type A Antibodies

Preexisting donor-specific anti-HLA antibodies (DSAs) have been associated with reduced survival of lung allografts. However, antibodies with specificities other than HLA may have a detrimental role on the lung transplant outcome. A young man with cystic fibrosis underwent lung transplantation with organs from a suitable deceased donor. At the time of transplantation, there were no anti-HLA DSAs. During surgery, the patient developed a severe and intractable pulmonary hypertension associated with right ventriular dysfunction, which required arteriovenous extracorporeal membrane oxygenation. After a brief period of clinical improvement, a rapid deterioration in hemodynamics led to the patient's death on postoperative day 5. Postmortem studies showed that lung specimens taken at the end of surgery were compatible with antibody-mediated rejection (AMR), while terminal samples evidenced diffuse capillaritis, blood extravasation, edema, and microthrombi, with foci of acute cellular rejection (A3). Immunological investigations demonstrated the presence of preexisting antibodies against the endothelin-1 receptor type A (ET_A R) and the angiotensin II receptor type 1 (AT₁ R), two of the most potent vasoconstrictors reported to date, whose levels slightly rose after transplantation. These data suggest that preexisting anti-ET_A R and anti-AT₁ R antibodies may have contributed to the onset of AMR and to the catastrophic clinical course of this patient.

The Use of Integra Dermal Regeneration Template Versus Flaps for Reconstruction of Full-Thickness Scalp Defects Involving the Calvaria: A Cost-Benefit Analysis

Background

INTEGRA^® Dermal Regeneration Template is a well-known and widely used acellular dermal matrix. Although it helps to solve many challenging problems in reconstructive surgery, the product cost may make it an expensive alternative compared to other reconstruction procedures. This retrospective study aims at comparing INTEGRA-based treatment to flap surgery in terms of cost and benefit.

Patients and Methods

We considered only patients treated for scalp defects with bone exposure in order to obtain two groups as homogeneous as possible. We identified two groups of patients: 17 patients treated with INTEGRA and 18 patients treated with flaps. All patients were admitted in our institution between 2004 and 2010, and presented a defect of the scalp following trauma or surgery for cancer, causing a loss of the soft tissues of the scalp with bone exposure without pericranium. To calculate the cost in constant euros of each treatment, three parameters were evaluated for each patient: cost of the surgical procedure (number of doctors and nurses involved, surgery duration, anesthesia, material used for surgery), hospitalization cost (hospitalization duration, dressings, drugs, topical agents), and outpatient cost (number of dressing changes, personnel cost, dressings type, anti-infective agents). The statistical test used in this study was the Wilcoxon Mann–Whitney (α = 0.05).

Results

No significant difference was characterized between the two groups for gender, age, presence of diabetes, mean defect size, and number of surgical procedures. All patients healed with good quality and durable closure. The median total cost per patient was €11,121 (interquartile range (IQR) 8327–15,571) for the INTEGRA group and €7259 (IQR 1852–24,443) for the flap group (p = 0.34). A subgroup of patients (six patients in the INTEGRA group and five patients in the flap group) showing defects larger than 100 cm² were considered in a second analysis. Median total cost was €11,825 (IQR 10,695–15,751) for the INTEGRA group and €23,244 (IQR 17,348–26,942) for the flap group.

Conclusion

Both treatments led to a good healing of the lesions with formation of soft and resistant tissue. No significant difference was characterized between the two groups for days of hospitalization and costs. In cases of patients with defects larger than 100 cm² for whom major surgery is needed, the treatment with INTEGRA seemed to be less expensive than the treatment with free flaps or pedicle flaps.

Level of Evidence V

This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the A5 online Instructions to Authors.www.springer.com/00266.

PCDD/Fs in the soils in the province of Trento: 10 years of monitoring

This paper presents a 10-year overview of the dioxins and furans (PCDD/Fs) content in soils in the province of Trento (Italy). The aim was to compare the results found in the Valsugana valley where there is a steel-making plant with other locations within the province. During 2002 and from 2005 to 2010, campaigns were carried out in order to obtain a background reference in terms of micropollutants, in view of the possible construction of a municipal solid waste (MSW) incinerator in Trento. In 2009, a campaign was performed for the environmental characterization of the Valsugana valley, the town of Trento and its surroundings, in order to help assess the impact of the steel-making plant. In 2012, another campaign was carried out by the Department of Civil and Environmental Engineering of Trento, in order to monitor the soils in the area around the steel mill. All the campaigns showed relatively low concentrations of PCDD/Fs, both in protected areas and in the areas close to the industrial plants. No critical situations were identified, as also confirmed by an estimation of the potential daily PCDD/F intake by children subject to accidental ingestion of soil.

Assessment of the local role of a steel making plant by POPs deposition measurements

Atmospheric depositions of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs) were monitored at three sites in the vicinity of a steel making plant, located in an Italian alpine valley. A high variability in the deposition of PCDD/Fs was observed. The influence of the plant was noticeable at two of the sampling sites. However, as the congener profiles demonstrated, wood burning for domestic heating is an additional source of PCDD/Fs for the area under investigation, and this interferes with the characterization of the emissions from the steel plant. The influence of the plant, in terms of PCDD/F deposition, was not noticeable at the most distant site (2km), where an extremely high peak of PCDD/F deposition was measured during the period from 12 January-22 February 2012. The comparison between the congener distribution of PCDD/Fs observed in this sample and the fingerprints of different sources could justify the attribution of this anomalous peak to a possible episode of domestic waste combustion. In order to find a better correlation between the deposition to soil and emissions from the plant, the congener distribution of PCBs was studied. The PCB profiles observed at the three sites well reproduced the average profile found in samples of ash retained by the bag filter of the plant. Thus the monitoring of PCB deposition is an interesting starting point to calibrate dispersion models to assess the impact of steel making activities.

A proposal for a diet-based local PCDD/F deposition limit

This study proposes a method to estimate the maximal tolerable value for the atmospheric deposition of dioxins (PCDD/Fs) to soil. The case study for the application of this methodology is an Alpine valley where a steel production plant is present. In order to estimate the limit value for the PCDD/F deposition, consolidated food chain models were applied, but were adapted to be run backwards with respect to their original formulation, by starting from the diet of people living in the region and from the PCDD/F Tolerable Daily Intake value proposed by the World Health Organization. For this case study, the estimated limit value was 2.30 pg WHO-TEQ m(-2) d(-1) when only local diary products were taken into account and 1.91 pg WHO-TEQ m(-2) d(-1) when also the role of local cereals and vegetables was considered. The average PCDD/F deposition measured in the same region during a monitoring campaign was lower than the above limit values (1.40 pg WHO-TEQ m(-2) d(-1)). Indications on how to consider the contribution of meat and fish are provided too. The approach proposed in this paper represents a useful tool to assess the acceptable overall deposition for a specific region.

New surgical trends in breast cancer treatment: conservative interventions and oncoplastic breast surgery

AIM

From radical mastectomy by Halstedt to quadrantectomy by Veronesi, surgical treatment of breast cancer has become more and more conservative in order to preserve women quality of life. We analyzed the evolution of breast interventions through a nine-year period.

METHODS

We collected data about all breast surgery interventions performed between 2002 and 2010 in our Department Of Surgery, focusing on patients' age, tumor histology, TNM classification, hormonal status, intervention radicality on the breast and axilla, and eventual plastic surgery. Data were analyzed by R (version 2.14.2), considering significant P<0.05.

RESULTS

A total of 3320 breast surgery interventions were performed on 2300 patients. Absolute yearly number of interventions has strongly increased with the introduction of the mammography screening (291 to 430). Conservative breast surgery (55% to 62%) and skin-sparing mastectomy (1% to 8%) have been performed more frequently in premenopausal patients, and significantly increased in time, with a consequent decrease of classical radical mastectomy (38 to 15%) but an increase of margins widening after primary surgery (2% to 6%). Sentinel lymph node biopsy is mostly replacing complete axillary lymph node dissection (93% to 31%). Skin-glandular reshaping progressively increased (up to 20%) as also breast reconstruction (23% to 40%), which since 2008 has been performed also in women older than 75 years, while flaps have been used in strictly selected patients.

CONCLUSION

Conservative surgery represents the target of current breast cancer treatment where possible, and skin-sparing mastectomy an interesting alternative to classical one when radicality is required. Sentinel lymph node biopsy has replaced complete axillary lymph node dissection by clinically negative nodal status. Breast reshaping and reconstruction are increasing in every age group, including women older than 75 years.