2,863 research outputs found

    Determining biokinetic coefficients for the upflow anaerobic sludge blanket reactor treating sugarcane wastewater in hot climate conditions

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    Acknowledgements The managing director of Imam Khomeini (pbuh) Agro-Industry in Shushtar and the laboratory expert of Agro-Industry Treatment Plant are highly appreciated for their cooperation in conducting this study.Peer reviewedPostprin

    Novel aromatic ring-hydroxylating dioxygenase genes from coastal marine sediments of Patagonia

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    <p>Abstract</p> <p>Background</p> <p>Polycyclic aromatic hydrocarbons (PAHs), widespread pollutants in the marine environment, can produce adverse effects in marine organisms and can be transferred to humans through seafood. Our knowledge of PAH-degrading bacterial populations in the marine environment is still very limited, and mainly originates from studies of cultured bacteria. In this work, genes coding catabolic enzymes from PAH-biodegradation pathways were characterized in coastal sediments of Patagonia with different levels of PAH contamination.</p> <p>Results</p> <p>Genes encoding for the catalytic alpha subunit of aromatic ring-hydroxylating dioxygenases (ARHDs) were amplified from intertidal sediment samples using two different primer sets. Products were cloned and screened by restriction fragment length polymorphism analysis. Clones representing each restriction pattern were selected in each library for sequencing. A total of 500 clones were screened in 9 gene libraries, and 193 clones were sequenced. Libraries contained one to five different ARHD gene types, and this number was correlated with the number of PAHs found in the samples above the quantification limit (<it>r </it>= 0.834, <it>p </it>< 0.05). Overall, eight different ARHD gene types were detected in the sediments. In five of them, their deduced amino acid sequences formed deeply rooted branches with previously described ARHD peptide sequences, exhibiting less than 70% identity to them. They contain consensus sequences of the Rieske type [2Fe-2S] cluster binding site, suggesting that these gene fragments encode for ARHDs. On the other hand, three gene types were closely related to previously described ARHDs: archetypical <it>nahAc</it>-like genes, <it>phnAc</it>-like genes as identified in <it>Alcaligenes faecalis </it>AFK2, and <it>phnA1</it>-like genes from marine PAH-degraders from the genus <it>Cycloclasticus</it>.</p> <p>Conclusion</p> <p>These results show the presence of hitherto unidentified ARHD genes in this sub-Antarctic marine environment exposed to anthropogenic contamination. This information can be used to study the geographical distribution and ecological significance of bacterial populations carrying these genes, and to design molecular assays to monitor the progress and effectiveness of remediation technologies.</p

    Employment among Childhood Cancer Survivors: A Systematic Review and Meta-Analysis

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    To date, there are heterogeneous studies related to childhood cancer survivors&rsquo; (CCS) employment rates. Given the importance of this topic, we aimed to perform a systematic review and meta-analysis to investigate the prevalence of employment among CCS and to examine its association with socio-demographic and clinical factors. We followed the PRISMA guidelines to search for pertinent articles in relevant electronic databases. Eighty-nine articles comprising 93 cohorts were included. The overall prevalence of employment was 66% (CI: 95% 0.63&ndash;0.69). Subgroup meta-analyses showed that lower rates were found for central nervous system tumor survivors (51%, CI: 95% 0.43&ndash;0.59), and for CCS treated with cranial-radiotherapy (53%, CI: 95% 0.42&ndash;0.64) or haematopoietic stem-cell transplantation (56%, CI: 95% 0.46&ndash;0.65). The studies conducted in Asia highlighted employment rates of 47% (CI: 95%, 0.34&ndash;0.60). Univariate meta-regressions identified the following socio-demographic factors associated with higher rates of employment: a female gender (p = 0.046), a higher mean age at the time of investigation (p = 0.00), a longer time since diagnosis (p = 0.00), a higher educational level (p = 0.03), and a married status (p = 0.00). In conclusion, this systematic review and meta-analysis provides evidence that two-thirds of CCS are employed worldwide. Identifying vulnerable groups of CCS may allow for the design of multidisciplinary support strategies and interventions to promote employment in this population

    The ketogenic diet increases in vivo glutathione levels in patients with epilepsy

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    The Ketogenic Diet (KD) is a high-fat, low-carbohydrate diet that has been utilized as the first line treatment for contrasting intractable epilepsy. It is responsible for the presence of ketone bodies in blood, whose neuroprotective effect has been widely shown in recent years but remains unclear. Since glutathione (GSH) is implicated in oxidation-reduction reactions, our aim was to monitor the effects of KD on GSH brain levels by means of magnetic resonance spectroscopy (MRS). MRS was acquired from 16 KD patients and seven age-matched Healthy Controls (HC). We estimated metabolite concentrations with linear combination model (LCModel), assessing differences between KD and HC with t-test. Pearson was used to investigate GHS correlations with blood serum 3-B-Hydroxybutyrate (3HB) concentrations and with number of weekly epileptic seizures. The results have shown higher levels of brain GSH for KD patients (2.5 ± 0.5 mM) compared to HC (2.0 ± 0.5 mM). Both blood serum 3HB and number of seizures did not correlate with GSH concentration. The present study showed a significant increase in GSH in the brain of epileptic children treated with KD, reproducing for the first time in humans what was previously observed in animal studies. Our results may suggest a pivotal role of GSH in the antioxidant neuroprotective effect of KD in the human brain

    Neurodevelopmental outcomes of very preterm infants born following early foetal growth restriction with absent end-diastolic umbilical flow

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    This study aims to assess the impact of time of onset and features of early foetal growth restriction (FGR) with absent end-diastolic flow (AEDF) on pregnancy outcomes and on preterm infants' clinical and neurodevelopmental outcomes up to 2 years corrected age. This is a retrospective, cohort study led at a level IV Obstetric and Neonatal Unit in Bologna, Italy. Pregnant women were eligible if having singleton pregnancies, with no major foetal anomaly detected, and diagnosed with early FGR + AEDF (defined as FGR + AEDF detected before 32 weeks gestation). Early FGR + AEDF was further classified according to time of onset and specific features into very early and persistent (VEP, FGR + AEDF first detected at 20-24 weeks gestation and persistent at the following scans), very early but transient (VET, FGR + AEDF detected at 20-24 weeks gestation and progressively improving at the following scans) and later (LA, FGR + AEDF detected between 25 and 32 weeks gestation). Pregnancy and neonatal outcomes and infant follow-up data were collected and compared among groups. Neurodevelopment was assessed using the revised Griffiths Mental Developmental Scales (GMDS-R) 0-2 years. A regression analysis was performed to identify early predictors of preterm infants' neurodevelopmental impairment. Fifty-two pregnant women with an antenatal diagnosis of early FGR + AEDF were included in the study (16 VEP, 14 VET, 22 LA). Four intrauterine foetal deaths occurred, all in the VEP group (p = 0.010). Compared to LA infants, VEP infants were born with lower gestational age and lower birth weight, had lower arterial cord blood pH and were at higher risk for intraventricular haemorrhage and periventricular leukomalacia (p &lt; 0.05 for all comparisons). At 12 months, VEP infants had worse GMDS-R scores, both in the general quotient (mean [SD] 91.8 [12.4] vs 104.6 [8.7] in LA) and in the performance domain (mean [SD] 93.3 [15.4] vs 108.8 [8.8] in LA). This latter difference persisted at 24 months (mean [SD] 68.3 [17.0] vs 92.9 [17.7] in LA). In multivariate analysis, at 12 months corrected age, PVL was found to be an independent predictor of impaired general quotient, while the features and timing of antenatal Doppler alterations predicted worse scores in the performance domain.Conclusion: Timing of onset and features of early FGR + AEDF might impact differently on neonatal clinical and neurodevelopmental outcomes. Shared awareness of the importance of FGR + AEDF features between obstetricians and neonatologists may offer valuable tools for antenatal counselling and for tailoring pregnancy management and neonatal follow-up in light of specific antenatal and neonatal risk factors

    Cancer patients and telenursing interventions in Italy. a systematic review

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    Objective: The use of digital technologies could improve patients’ quality of care, satisfaction, and health-related outcomes in cancer patients. This paper aims to explore the use of digital technologies in nursing management of cancer patients in Italy. Patients and Methods: A systematic literature review was performed. PubMed, Excerpta Medica dataBASE (Embase), Cumulative Index to Nursing and Allied Health Literature (CINAHL), and Cochrane Library databases were consulted from September 1, 2021, to January 31, 2022. Key terms for Telenurs-ing/Telemedicine and cancer in Italy were used. The quality of each study was assessed through the Grading of Recommendations, Assessment, Development, and Evaluations method. Results: 131 articles were found and 5 were included: two randomized-clinical-trial protocols aimed to explore the impact of medication management apps on patients’ quality of life; one validation trial suggested good reliability in the therapeutic adherence of patients on chemotherapy but limited sensitivity in detecting related adverse events; two observational studies described the validation of telephone triage prehospitalization programs performed by nurses during the pandemic. Conclusions: The use of digital technologies in nursing management of cancer patients is in-frequent in Italy, however, increased during the pandemic. Further studies are needed to evaluate the impact and effectiveness of the use of digital technologies in nursing management in cancer patients

    Improving sleep quality in cancer patients. a literature review on non-pharmacologic interventions

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    Objective: Disrupted sleep-in cancer patients is due to several factors. Pre-existing sleep disorders, mental status in cancer, or side effects of cancer treatment are all potential predictors of sleep disturbances in this vulnerable population. This review aims to evaluate and synthesise non-pharmaco-logic interventions for improving sleep quality and the associated benefits in cancer patients. Materials and Methods: A literature review was performed according to PRISMA guidelines. PubMed, Google Scholar, MEDLINE, CINAHL, and Embase databases were interrogated, selected the article with cancer, neoplasm, oncology, sleep-wake disorders, sleep disturbance, sleep problem, strategies, treat-ment, and intervention such as keywords. No time and geographic restrictions but paediatrics, children, and interventions unrelated to sleep improvement in cancer were excluded. Results: Overall, twenty-nine articles were included in the review after selection. The included studies analysed different types of cancer, like breast, lung, and prostate cancer and acute leukaemia. Most of the data gathered from the relevant research suggest that nonpharmacologic interventions significantly improved cancer patients’ sleep quality. Conclusions: Cancer survival rates are increasing; researchers and healthcare professionals should aim not just at survival but also to allow cancer patients just comfortably to live, considering the best quality of life possible. Nurses have a crucial role in the care of this patient population. Nursing implies an intimate relationship with patients and educating the patient to improve their mental and physical condition through non-pharmacological approaches, which should be considered a specific competence

    Elderly patients with multimorbidity in the home setting: umbrella review on therapeutic non-adherence causes

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    Objective: The elderly population is the most at risk regarding adherence, especially in the coexistence of multiple diseases. This study aims to detect factors contributing to therapeutic non-adherence in elderly patients in home settings. Materials and methods: A review protocol was developed to conduct the umbrella review using the methodological framework of the Richardson et al study. The search strategy was developed in December 2022 to conduct a systematic search and to perform an Umbrella Review of systematic reviews, meta-analyses and integrative reviews published from 2012 to 2022 in English. Results: A total of 26,038 articles were identified and screened. 18 relevant articles were included in the study. Conclusions: Therapeutic adherence in elderly patients with comorbidities in polypharmacotherapy at home is a significant problem in public health and health care. Several factors of non-adherence have been identified in the studies reviewed, confirming that the problem is multifactorial. Reducing the number of medications prescribed would appear optimal, although often not possible, as this has been seen to have an immediate positive impact. A multidisciplinary approach makes it possible not to fragment care, ensuring positive feedback on therapeutic adherence
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