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In a previous study, indigenous bacteriocin-producing Pediococcus acidilactici HW01 was isolated from malt. The bacterium was chosen as it is properly adapted to the malting conditions, and it showed a strong antagonistic effect against beer-spoilage lactic acid bacteria (LAB) in the previous study. Strain HW01 was added to the malting process for bio-acidification and bio-preservation of LAB. Changes in the microorganisms, enzymes, pH, total soluble nitrogen, free amino nitrogen, colour, filtration time and viscosity of wort were compared with the control. The LAB starter culture improved several characteristics of malt modification, such as microbiological stability, viscosity and filtration time. Especially, the starter culture protected the malt from the beer-spoilage bacteria of the genus Pseudomonas , by producing several acids and antimicrobial substances. The potential of using HW01 strains for bio-acidification and the bio-preservation of LAB are discussed. • Pediococcus acidilactici HW01 was used as the starter culture. • HW01 treated-sample was controlled foodborne disease occurring bacteria. • Pseudomonas spp. in the malt was restricted by the treating of HW01. • Filtration time was significantly decreased in the HW01 treated-wort. • Wort analysis was not affected by using the HW01 as the starter culture. [ABSTRACT FROM AUTHOR]

• The fruit color changes of different varieties in different periods were measured. • The contents of three main pigments were determined, and their accumulation with the change of fruit color was clarified. • The expression patterns of genes in carotenoid synthesis pathway was analyzed and several important genes were screened. • The correlation analysis of fruit color, pigment and related genes of ornamental pepper was carried out. To understand better the mechanisms of the pigment accumulation in ornamental pepper, the fruit color, pigment and expression of carotenoid biosynthetic genes were investigated. The test materials were divided into three categories. The first category included cultivars B3, J1, J2 and Q3, the second were M3, M3′, W8 and WU, C2, S1, W3 and W4 belonged to the third category. The pigment changes during ripening were characterized by loss of chlorophyll and anthocyanin, and a rapid accumulation of carotenoids. It was found that GGPS, PSY, CRTZ -2 and CCS genes have abundant transcription during the accumulation of carotenoids in ornamental pepper, which have a more important regulatory function. Correlation analysis were conducted between fruit color, pigment and expression of genes, it showed that there were significant correlation between key genes of carotenoid biosynthetic pathway, among which PSY was highly correlated with CCS and CRTZ- 2 , CCS was highly correlated with CRTZ- 2. Chromaticity values were negatively correlated with anthocyanin content in fruits, and the correlation between a* and carotenoid content was significantly higher. The information will be benefit for exploring the carotenoid regulation mechanism of ornamental pepper, and providing theoretical for fruit color breeding of ornamental pepper. [ABSTRACT FROM AUTHOR]

A recombinant DNA, encoding the chimeric protein of the signal sequence for bifidobacterial α-amylase mature pediocin PA-1, was introduced into Bifidobacterium longum MG1. Biologically active pediocin PA-1 was successfully secreted from the strain and showed bactericidal activity against Listeria monocytogenes and the same molecular mass as native pediocin PA-1. [ABSTRACT FROM AUTHOR]

Informed by the social ecological model, which asserts that health behaviors and beliefs are the result of multiple levels of influence, we examined factors related to parents' support for in-school COVID-19 mitigation strategies. Using data from a survey of 567 parents/caregivers of public elementary and middle school students in eight Maryland counties, we employed regression models to examine relationships between parent-, child-, family-, school-, and community-level factors and acceptability of mitigation strategies. Acceptance of COVID-19 mitigation strategies was positively correlated with child- and family-level factors, including child racial identity (parents of Black children were more accepting than those of White children, odds ratio [ OR ]: 2.5, 95% confidence interval [CI] = [1.5, 4.1]), parent receipt of the COVID-19 vaccine ( OR : 2.4, 95% CI = [1.5, 3.7]), and parent Democrat or Independent political affiliation (compared with Republican affiliation, OR : 4.2, 95% CI = [2.6, 6.7]; OR : 2.2, 95%CI = [1.3, 3.8], respectively). Acceptance was also positively associated with parents' perceptions of their school's mitigation approach, including higher school mitigation score, indicating more intensive mitigation policies ( OR : 1.1, 95% CI = [1.0, 1.1]), better school communication about COVID-19 ( OR : 1.7, 95% CI = [1.4, 1.9]) and better school capacity to address COVID-19 ( OR : 1.9, 95% CI = [1.5, 2.4]). Community-level factors were not associated with acceptance. Child- and parent-level factors identified suggest potential groups for messaging regarding mitigation strategies. School-level factors may play an important role in parents' acceptance of in-school mitigation strategies. Schools' capacity to address public health threats may offer an underappreciated and modifiable setting for disseminating and reinforcing public health guidance.

Background: At the onset of the COVID-19 pandemic, schools closed across the United States. Given the impact of virtual learning and lost access to school resources, schools eventually reopened with COVID-19 mitigation protocols in place. This qualitative study sought to understand parental perceptions of school-based COVID-19 mitigation strategies., Methods: Using a phenomenology approach, nine focus groups were completed with 40 parents of children in grades K-8 representing eight Maryland counties. Based on acceptance of masking policies (as indicated on a survey), parents were sorted into 2 groups-lower and higher masking acceptance. A thematic analysis was conducted for each group and themes were compared between the 2 groups., Results: The main themes were related to parents' general sentiments regarding COVID-19, compliance, pandemic-related changes over time, changes in personal opinions, and in-person learning. Both groups described challenges related to inconsistent COVID-19 mitigation policies and practices, the challenges of rapid and frequent changes in guidelines during the pandemic, and the benefits of in-person learning., Conclusions: Parents of elementary and middle school children, regardless of general acceptance of masking policies, shared concerns about implementation and guidance regarding school-based mitigation strategies., (© 2024 American School Health Association.)

As a fruit and vegetable crop, the ornamental pepper is not just highly ornamental but also rich in nutritional value. The quality of ornamental pepper fruits is given in their contents of capsaicin, vitamin C (VC), flavonoids and total phenols. The study concentrated on the accumulation of capsaicin and dihydrocapsaicin in different tissues of 18 peppers during fruit growth and development. The results showed that the pericarp and placenta contained significantly higher levels of capsaicin than dihydrocapsaicin. Additionally, the placenta contained significantly higher levels of both capsaicin and dihydrocapsaicin compared to the pericarp. The content of capsaicin was in the range of 0-6.7915 mg·g -1 , the range of dihydrocapsaicin content was 0-5.329 mg·g -1 . Interestingly, we found that the pericarp is rich in VC (5.4506 mg·g -1 ) and the placenta is high in flavonoids (4.8203 mg·g -1 ) and total phenols (119.63 mg·g -1 ). The capsaicin is the most important component using the correlation analysis and principal component analysis. The qPCR results substantiated that the expression of genes in the placenta was significantly higher than that in the pericarp and that the expression of genes in green ripening stage was higher than that in red ripening stage. This study could be utilized to select the best ripening stages and tissues to harvest peppers according to the use of the pepper and to the needs of producers. It not only provides a reference for quality improvement and processing for consumers and market but also provides a theoretical basis for high-quality pepper breeding.

Background: Individuals with autism spectrum disorder (ASD) have social communication difficulties and restricted, repetitive, and/or sensory behaviors or interests. The prevalence of ASD is now 1 in 36 individuals. Parents of individuals with ASD face challenges that can affect their physical and psychological well-being., Objective: With the long-term goal to tailor an exercise program, the purpose of this study was 2-fold: (1) establish the baseline physical and mental health of parents of individuals with ASD and (2) estimate the relationship of physiologic variables with psychological variables of health for parents of individuals with ASD., Methods: This descriptive, cross-sectional study (N = 44) explored physical health measures and the correlation between physical and psychological health, using measures of anxiety, stress, parenting depression, and positive thinking for parents who care for individuals with ASD., Results: The common characteristics that these parents shared was high body fat and low physical activity. Body fat was negatively correlated to total step count ( r  = -0.428, P  < .05), grip strength ( r  = -0.319, P  < .5), and total distance walked in the week ( r  = -0.661, P  < .01), and positively correlated to 5-times sit to stand ( r  = 0.337, P  < .05). Low activity correlated to increased parenting stress of advocating for child's needs ( r  = -0.310, P  = .043)., Conclusions: Understanding relationships between physical and psychological health informs effective interventions and support systems for parents. Parents need supports to be able to prioritize exercise. Future studies should include a larger sample to verify these effects., Competing Interests: Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Background and Objectives: Transgender and gender diverse (trans) health research has grown rapidly, highlighting the need to characterize the scientific evidence base. We conducted a systematic review of peer-reviewed research on disease burden and correlates in trans adolescents and adults over a 20-month period to identify knowledge gaps and assess methodological characteristics including measurement of gender identity, community engagement, and study quality., Data Sources, Eligibility Criteria, and Synthesis Methods: We searched seven databases using terms related to (a) transgender populations and (b) health or disease. Eligible studies were in English, French, or Spanish and reported original quantitative data on mental health or substance use conditions, infectious diseases, or non-communicable conditions in at least 25 trans individuals aged 15+. Quality assessment was performed in duplicate on a 10% sample of articles and findings were summarized using narrative synthesis., Results: The 328 included studies were conducted in 45 countries, with most from North America (54%) and limited research from South Asia (3%), Sub-Saharan Africa (3%), and the Middle East and North Africa (2%). Most studies used cross-sectional designs (73%) and convenience sampling (65%). Only 30% of studies reported any form of community engagement. Mental health and substance use disorders were the most studied area (77% of studies) and non-communicable conditions the least (16%). Available data indicated that trans populations experience high disease burden with considerable heterogeneity within and across settings. Of 39 articles assessed for quality, 80% were rated as fair, 18% as poor, and 3% as good quality., Conclusions and Implications: Geographic, gender-specific, and topical gaps remain in trans health, but we found more research from African countries, with transmasculine people, and on non-communicable conditions than previous syntheses. Areas for growth in trans health research include community engagement, non-binary health, chronic and age-related conditions, and health determinants., Registration: PROSPERO CRD42021234043., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Scheim et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)

Introduction: Schools were uniquely impacted during the COVID-19 (SARS-COV-2) pandemic. We sought to elucidate how parents/guardians of elementary and middle school students in Maryland navigated the return to in-person school following remote instruction. We also sought to understand how they perceived communication about school-based COVID-19 mitigation strategies and their preferences for the content and format of public health communication about COVID-19 mitigation in schools., Methods: We engaged a community advisory board comprised of key partners and implemented a survey and focus groups., Results: Results indicated that parents/guardians wanted clearer communication about COVID-19 mitigation policies in schools and were experiencing fatigue and confusion. These insights informed the development of a tailorable communication toolkit. The toolkit was designed to (1) inform parents/guardians about the importance and effectiveness of mitigation strategies for preventing viral spread to keep children in school, (2) promote a sense of community and support, and (3) help school communication teams effectively communicate information about mitigation strategies being implemented., Discussion: We describe a process for leveraging schools as a trusted messenger, engaging school communities in the development of communication messages, and utilizing a tailorable communication toolkit in the context of shifting public health guidance and local needs. The toolkit development and dissemination process offers a model for targeting public health messaging to parents/guardians in school settings., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Summers, Calderon, Klein, Wang, Dinh, Suliman, Hager, Edwards, Collins and Johnson.)

Web-based survey data collection has become increasingly popular, and limitations on in-person data collection during the COVID-19 pandemic have fueled this growth. However, the anonymity of the online environment increases the risk of fraudulent responses provided by bots or those who complete surveys to receive incentives, a major risk to data integrity. As part of a study of COVID-19 and the return to in-person school, we implemented a web-based survey of parents in Maryland between December 2021 and July 2022. Recruitment relied, in part, on social media advertisements. Despite implementing many existing best practices, we found the survey challenged by sophisticated fraudsters. In response, we iteratively improved survey security. In this paper, we describe efforts to identify and prevent fraudulent online survey responses. Informed by this experience, we provide specific, actionable recommendations for identifying and preventing online survey fraud in future research. Some strategies can be deployed within the data collection platform such as careful crafting of survey links, Internet Protocol address logging to identify duplicate responses, and comparison of client-side and server-side time stamps to identify responses that may have been completed by respondents outside of the survey's target geography. Other strategies can be implemented during the survey design phase. These approaches include the use of a 2-stage design in which respondents must be eligible on a preliminary screener before receiving a personalized link. Other design-based strategies include within-survey and cross-survey validation questions, the addition of "speed bump" questions to thwart careless or computerized responders, and the use of optional open-ended survey questions to identify fraudsters. We describe best practices for ongoing monitoring and post-completion survey data review and verification, including algorithms to expedite some aspects of data review and quality assurance. Such strategies are increasingly critical to safeguarding survey-based public health research., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2023 Wang et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)

Importance: Sociodemographic and health characteristics of patients undergoing gender-affirming surgery (GAS) are currently unknown. Understanding these patient characteristics is vital to optimizing patient-centered care for transgender patients., Objective: To determine sociodemographic characteristics for the transgender population undergoing GAS. Collected sociodemographic information included the following: age, race/ethnicity, body metrics, hormone replacement therapy administration and duration, substance use, psychiatric comorbidities, and medical comorbidities., Evidence Review: A search of seven electronic databases (PubMed, PsycINFO, Embase, CINAHL, Web of Science, Cochrane, and Gender Studies) was used to find all articles on GAS from inception through May 2019. The 15,190 articles were then subjected to two levels of screening, and articles unrelated to gender-affirming care, unavailable in English, n <5, and with no outcomes reporting were excluded. Textbook chapters and letters were also excluded., Findings: A total of 406 studies were fully extracted, with 307 studies reporting age ( n =22,727 patients), 19 reporting race/ethnicity ( n =1184), 74 reporting body metrics (body mass index [BMI] n =6852, height n =416, and weight n =475), 58 reporting hormone therapies ( n =5104), 56 reporting substance use ( n =1146), 44 reporting psychiatric comorbidities ( n =574), and 47 reporting medical comorbidities ( n =573). From the 406 studies, 80 were done in the United States. Regarding U.S. studies, 59 studies reported age ( n =5365), 10 reported race/ethnicity ( n =709), 22 reported body metrics (BMI n =2519), 18 reported hormone therapies ( n =3285), 15 reported substance use ( n =478), 44 reported psychiatric comorbidities ( n =394), and 47 reported medical comorbidities ( n =293). Age was the most reported characteristic, reported in 75.62% of studies (73.75% of U.S. studies). Race/ethnicity was the least commonly reported data, reported in 4.68% of studies (12.50% of U.S. studies)., Conclusions and Relevance: The type of sociodemographic information reported by GAS studies is inconsistently reported. To improve patient-centered care for transgender patients, further work is needed to create a standardization of collected sociodemographic information., Competing Interests: None of the authors has any disclosure, financial or otherwise, relating to the contents of this article., (Copyright 2023, Mary Ann Liebert, Inc., publishers.)

Background: As an antioxidant, hydrogen (H 2 ) can selectively react with the highly toxic hydroxyl radical (·OH) in tumor cells to break the balance of reactive oxygen species (ROS) and cause oxidative stress. However, due to the high diffusibility and storage difficulty of hydrogen, it is impossible to achieve long-term release at the tumor site, which highly limited their therapeutic effect., Results: Photosynthetic bacteria (PSB) release a large amount of hydrogen to break the balance of oxidative stress. In addition, as a nontoxic bacterium, PSB could stimulate the immune response and increase the infiltration of CD4+ and CD8+ T cells. More interestingly, we found that hydrogen therapy induced by our live PSB did not lead to the up-regulation of PD-L1 after stimulating the immune response, which could avoid the tumor immune escape., Conclusion: Hydrogen-immunotherapy significantly kills tumor cells. We believe that our live microbial hydrogen production system provides a new strategy for cancer hydrogen treatment combining with enhanced immunotherapy without up-regulating PD-L1., (© 2022. The Author(s).)

Treating wounds with multidrug-resistant bacterial infections remains a huge and arduous challenge. In this work, we prepared a "live-drug"-encapsulated hydrogel dressing for the treatment of multidrug-resistant bacterial infections and full-thickness skin incision repair. Our live dressing was comprised of photosynthetic bacteria (PSB) and extracellular matrix (ECM) gel with photothermal, antibacterial and antioxidant properties, as well as good cytocompatibility and blood compatibility. More interestingly, live PSB could be regarded as not only photothermal agents but also as anti-inflammatory agents to promote wound healing owing to their antioxidant metabolites. In vitro and in vivo studies showed that the PSB hydrogel not only had a high killing rate against methicillin-resistant Staphylococcus aureus (MRSA) but it also accelerated collagen deposition and granulation tissue formation by promoting cell proliferation and migration, which significantly promoted skin tissue regeneration and wound healing. We believe that the large-scale production of PSB Gel-based therapeutic dressings has the advantages of easy use and promising clinical applications. STATEMENT OF SIGNIFICANCE: Rapid wound healing and the treatment of bacterial infections have always been the two biggest challenges in the field of wound care. We prepared a "live drug" dressing by encapsulating photosynthetic bacteria into an extracellular matrix hydrogel to sterilize the wound and promote wound healing. First, photosynthetic bacteria are not only a photothermal agent for photothermal wound sterilization, but also possess the anti-inflammatory capacity to enhance wound healing due to their antioxidant metabolites. Second, the extracellular matrix hydrogel is rich in a variety of growth factors and nutrients to promote cell migration and accelerate wound healing. Third, photosynthetic bacteria are not only green and non-toxic, but also can be obtained on a large scale, which facilitates manufacturing and clinical transformation., Competing Interests: Declaration of Competing Interest The authors have no competing interests to declare., (Copyright © 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.)

Background: The aims of this review were to describe exercise interventions, facilitators, and barriers to physical activity for parents of children with autism spectrum disorder., Methods: A systematic review of the literature, appraising the validity of each article with Melnyk and Fineout-Overholt's level of evidence, from different databases CINAHL, Cochrane, PsycINFO, PubMed, ProQuest, and Web of Science between 2000 and 2020 was conducted. As the initial search revealed no articles on exercise interventions and only 2 articles with children with autism spectrum disorder, the aim was widened to all parents of children., Results: Forty-five articles were identified on barriers to physical activity including being the primary caregiving parent, perception of guilt and selfishness, and adhering to exercise programs they do as part of research, once research ends. Facilitators for physical activity including parents being more likely to exercise if they can bring their child with them and parents preferring exercise that is a lifelong habit, such as walking., Conclusions: Due to the lack of research on parents of children with autism spectrum disorder, recommendations include development and testing of interventions for parents of children with this condition including family-based exercise interventions where children and parents have a choice to exercise together.

The long intergenic non-coding RNA SNHG7 has been reported to be abnormally expressed in many types of cancer, the results remain controversial. In this study, a meta-analysis was performed to evaluate the clinicopathologic and prognostic value of SNHG7 in cancers. Electronic databases of PubMed, Web of Science, Cochrane Library and Embase were used to search relevant studies. A combined hazard ratio (HR) and its corresponding 95% confidence interval (CI) were used to assess the association between SNHG7 expression and prognosis in cancer patients. Pooled odds ratio (OR) and 95% CI were calculated to elaborate the association between SNHG7 expression and clinicopathological features in cancers. Besides, the data from The Cancer Genome Atlas (TCGA) dataset was used to validate the results. In total, eighteen studies compromising 1303 participants were enrolled in this analysis. The pooled results showed increased SNHG7 expression could predict unfavorable overall survival (OS) (HR = 1.75, 95%CI = 1.52-2.02, P = 0.000). Analysis stratified by follow-up time, cancer types, analysis types, sample sizes and cut off further verified the prognostic value of SNHG7. Additionally, elevated SNHG7 expression was correlated with TNM stage (OR: 3.31, 95%CI = 2.29-4.80, P = 0.000), lymph node metastasis (OR = 3.32, 95%CI = 1.61-6.83, P = 0.004), and tumor differentiation (OR = 1.92, 95%CI = 1.22-3.03, P =0.005) in patients with cancers. Excavation of TCGA dataset valuated that SNHG7 was upregulated in some cancers and predicted worse OS, which partially confirmed our results in this meta-analysis.

Background and Objective: Forkhead box P3 (FoxP3) is known as the specific marker for regulatory T lymphocytes (Tregs), which are responsible for self-tolerance and disturb the antitumor immunity. However, the prognostic implication of tumor-infiltrating FoxP3 + Tregs in patients with colorectal cancer (CRC) still remains controversial. The aim of this present study was to investigate the prognostic role of FoxP3 + Tregs in CRC through meta-analysis. Methods: PubMed, Embase and Web of Science were searched for relevant articles up to December 12, 2016. Pooled hazard ratio (HR) and 95% confidence interval (CI) were calculated to explore the prognostic value of FoxP3 + Tregs in CRC. Odds ratio (OR) was calculated to investigate the correlation between FoxP3 + Tregs and pathological parameters. Results: A total of 18 studies comprising 3,627 patients with CRC were enrolled in our meta-analysis. The combined HR for FoxP3 + Tregs on cancer-specific survival was 0.70 (95% CI = 0.62-0.80, P < 0.001). High FoxP3 + Tregs level was also associated with favorable prognosis on overall survival (HR = 0.76, 95% CI = 0.58-1.01, P = 0.058), with P -value very close to the statistical threshold. Yet, there was no correlation between FoxP3 + Tregs infiltration and disease-free survival (HR = 0.83, 95% CI = 0.63-1.09, P = 0.182). Moreover, FoxP3 + Tregs infiltration was significantly correlated with pT stage (OR = 0.50, 95% CI = 0.39-0.65, P < 0.001), tumor grade (OR = 0.77, 95% CI = 0.61-0.98, P = 0.032), lymphatic invasion (OR = 0.25, 95% CI = 0.07-0.89, P = 0.033) and vascular invasion (OR = 0.67, 95% CI = 0.52-0.86, P = 0.001). Conclusion: The present meta-analysis suggests that high FoxP3 + Tregs infiltration is inclined to indicate favorable prognosis and is associated with the pathogenesis of CRC. Immunotherapy targeting Tregs in patients with CRC should be further investigated.

The effects of two crude bacteriocins (DF01 and K10) on lactic acid bacteria (LAB) communities and pH during kimchi fermentation were analyzed by polymerase chain reactiondenaturing gradient gel electrophoresis (PCR-DGGE). Crude LAB bacteriocins, prepared by ammonium sulfate precipitation, were added at 5 AU/mL, and kimchi was incubated at 20°C for 7 days. The pH and titratable acidity of the kimchies were determined daily, and the amplified 16S rRNA products were analyzed by PCR-DGGE. The common and main LAB were Weissella spp., Leuconostoc spp., and Lactobacillus spp. from both control and bacteriocin-treated samples. Among them, W. koreensis , W. confusa , and Lb. sakei were the predominant microorganisms throughout the fermentation period. Some obligate and facultatively heterofermentative LAB were detected from the bacteriocin-treated samples. The pH of the kimchi samples treated with each bacteriocin was higher (ca. 0.8 unit) than that of the control at day 4 and 5.

Background: Lung transplant recipients have complex drug regimens. Study objectives were to assess drug therapy problems (DTPs), pharmacist recommendations, and patient satisfaction with pharmacist services., Methods: Using a pharmaceutical care assessment process, pharmacists identified DTPs and made therapeutic recommendations. Number of DTPs identified per pharmacist visit was calculated and compared to standard care visits through retrospective chart review. Potential clinical impact of recommendations was evaluated by blinded clinicians. Patient satisfaction was assessed via survey., Results: Fifty-five DTPs were identified in 43 patients over 50 pharmacist visits (1.05 ± 1.34 DTPs per visit). In these same patients, rate of DTP identification was 0.51 ± 0.64 DTPs per standard visit in the preceding two-wk period (p = 0.018 vs. pharmacist visit). The most common DTPs identified by the pharmacist were adverse drug effect (27%) and untreated indication (25%). Overall, 62% of pharmacist recommendations were rated very significant or significant. Survey return rate was 58% and satisfaction scores ranged from 3 to 5 out of 5. Review of medications and teaching regarding the use of medications received the most "very satisfied" and "highly important" scores., Conclusions: Pharmacists can make valuable contributions in a lung transplant clinic setting by identifying DTPs and making recommendations with a positive impact on patient outcomes and satisfaction., (© 2012 John Wiley & Sons A/S.)

Lactic acid bacteria (LAB) with antimicrobial activity and high exopolysaccharide (EPS) production ability isolated from sourdough were studied for their fermentation characteristics as potential new starter cultures. The values of pH, titratable acidity, and viable cell counts were 4.06+/-0.009-4.50+/- 0.015, 0.787+/-0.020%-1.172+/-0.018%, and 8.78+/-0.08-8.98+/- 0.06 log CFU/ml, respectively. In order to select probiotics with a high survival rate in the gut, isolates were tested to assess resistance against the artificial gastric acid and bile juice. Viable LAB counts were significantly (p<0.05) affected by the acidity. At pH 2.0, the total declines in the initial bacterial counts were 4.52+/-0.07 log for S. thermophilus St-Body-1, >7.98+/-0.03 log for E. flavescens DU-10, >7.95+/-0.05 log for E. faecium DU-12, and 3.15+/- 0.06 log for L. amylovorus DU-21. Among the strains, L. amylovorus DU-21 was the only strain that had bile tolerance under simulated gastrointestinal conditions. In order to improve EPS production by L. amylovorus DU- 21, the influence of carbon source was studied. When glucose was used as a carbon source, EPS production dramatically increased to 17.19+/-0.28 g/l (p<0.05). The maximum cell growth (10.012+/-0.012 log CFU/ml) and EPS production (18.71+/-0.19 g/l) were achieved when 15 g/ l of glucose was employed as the carbon source.

Staphylococcus aureus strains are important foodborne pathogens that produce various toxins. To evaluate the risk of the enterotoxins, four S. aureus strains from kinbap and two clinical samples were isolated and identified, and their expression of the enterotoxin genes were analyzed using a reverse transcription real-time PCR. Various enterotoxin genes were detected, including sea, seg, seh, sei, sen, seo, and sem, where each isolate contained one or two. When the mRNA detection of the enterotoxin genes was analyzed using a reverse transcriptase PCR, various levels of expression were found depending on the species and enterotoxin gene. Therefore, it is reasonable to suggest that the poisoning risk of S. aureus can be effectively evaluated based on the gene expression at the mRNA level.