Search

The article presents a preface to the papers of discussion at the Ninth Ka-Band Conference.

The new compounds α- and β-MoSCl3 and MoSeCl3 are prepared by chemical vapor transport reaction of MoCl3 and elemental S or Se (sealed silica tubes, 48 h, 400 → 200 °C for α-MoSCl3 and MoSeCl3 and 400 → 140 °C for β-MoSCl3). [ABSTRACT FROM AUTHOR]

A correction to the article "Anticancer oncolytic activity of respiratory syncytial virus," that was published in the May 15, 2009 issue is presented.

Graphical abstract Highlights • First time measurement of Mn 2 Al11B 2 using neutron powder diffraction. • Mn 2 Al11B 2 is determined to be an antiferromagnet at room temperature and below. • Magnetostriction is observed for the lattice parameters around room temperature. • Indications for a canted magnetic structure in Mn 2 Al11B 2 are found. Abstract The nano-laminar ceramic Mn 2 AlB 2 belongs to the orthorhombic M 2 AlB 2 system (M = Cr, Fe, Mn), in which Fe 2 AlB 2 was shown to be ferromagnetic near room temperature. Herein, the magnetic state of Mn 2 Al11B 2 is investigated using magnetization measurements, in the 5–360 K temperature range, X-ray diffraction in the 300–800 K range and neutron diffraction in the 1.6–300 K range. From the totality of our results we conclude that below ∼390 K Mn 2 AlB 2 becomes a canted antiferromagnet. The crystallographic unit cell is doubled along the c axis (i.e. a propagation vector of 0,0,1/2) and the ordered Mn magnetic moments are oriented either along the a or the b axes, with a magnetic moment reaching 0.71(2) µ B per Mn atom at 1.6 K. This magnetic structure is in excellent agreement with, and contributes to the validity of the recently reported theoretical calculations for the (Fe 1−x Mn x) 2 AlB 2 system. [ABSTRACT FROM AUTHOR]

We have prepared nanocrystals of MoS2 across a range of length scales by heating single crystals of the molecular precursor (NH4)2Mo3S13·H2O. Rod-shaped crystals of the polysulfide precursor retain their original morphology after heating at temperatures up to 1000 °C and undergo complete conversion to MoS2 while acting as a template for the confined formation of MoS2 nanocrystals. This solid state transformation proceeds with the release of gaseous species without blowing the crystals apart and leads to formation of pores embedded into a nanocrystalline assembly of the templated nano-MoS2. The obtained assemblies of MoS2 nanocrystals have the exact same shape of the original rod-shaped (NH4)2Mo3S13·H2O crystals indicative of a pseudomorphic shape-retentive process. Such crystal-shaped nanocrystal assemblies show electrical conductivity values similar to a bulk MoS2 single crystal with electron carrier concentration of 1.5 × 1014 cm–3 and mobility of 7 cm2/(V s). The nanocrystals of MoS2 were grown at temperatures ranging from 450 to 1000 °C, and the sizes, shapes, morphologies, and their orientations can be engineered as a function of heating rate, soaking time, and temperature. These findings suggest a unique process for constrained templated nanocrystal growth from an organized molecular precursor structure with control of bulk morphology, size distribution, and orientation of nanocrystallites. [ABSTRACT FROM AUTHOR]

Rice is generally shows variable level of sensitivity to salinity during its developmental stages and remarkably sensitive during young seedling stage and early reproductive phase. Quantifying the level of salt tolerance based on salt stress indices is an effective method in identification of tolerant genotypes. In this study, the salt stress indices were used to identify best performing genotypes based on salt susceptibility indices (SSI) and salt response indices (SRI) as relevant parameters. Among the 39 genotypes studied, 29 showed better endurance to salt susceptibility indices, among them Pokkali, IR72132-AC-6-1 and IR70869-B-P-13-2 performed well with least SSI, which refers more tolerance with lesser yield reduction, whereas IR29 was vice-versa to the above. Genotypes IR72593-B-19-2-3-1, IR73104-B-1-1-3-2-1 and IR74802-3R-7-1-2 had a better performance with early flowering and highly responsive to salt stress with lower percent yield reduction. The phenotypic variation is higher than genotypic variation for all traits except for flowering duration and it indicates presence of variability for different traits. High heritability with variability, genetic advance and better salt stress indices indicates involvement of additive gene action and can be manipulated and utilized in further breeding program. [ABSTRACT FROM AUTHOR]

A seriesof 2-substituted-4-([1,2,4]triazolo[1,5-a]pyridin-6-yl)-5-(6-methylpyridin-2-yl)imidazoleswas synthesized and evaluated to optimize a prototype inhibitor ofTGF-β type I receptor kinase (ALK5), 6. Combinationof replacement of a quinoxalin-6-yl moiety of 6witha [1,2,4]triazolo[1,5-a]pyridin-6-yl moiety, insertionof a methyleneamino linker, and a o-F substituentin the phenyl ring markedly increased ALK5 inhibitory activity, kinaseselectivity, and oral bioavailability. The 12b(EW-7197)inhibited ALK5 with IC50value of 0.013 μM in a kinaseassay and with IC50values of 0.0165 and 0.0121 μMin HaCaT (3TP-luc) stable cells and 4T1 (3TP-luc) stable cells, respectively,in a luciferase assay. Selectivity profiling of 12businga panel of 320 protein kinases revealed that it is a highly selectiveALK5/ALK4 inhibitor. Pharmacokinetic study with 12b·HClin rats showed an oral bioavailability of 51% with high systemic exposure(AUC) of 1426 ng × h/mL and maximum plasma concentration (Cmax) of 1620 ng/mL. Rational optimization of 6has led to the identification of a highly potent, selective,and orally bioavailable ALK5 inhibitor 12b. [ABSTRACT FROM AUTHOR]

Focuses on application of parallel structures in reconfigurable machining tools (RMT). Assembly of RMT from spindle, slides and worktables; Accommodation of machining requirements; Utilization of a novel parallely-actuated work-support module.

Boosting the immune system has become a crucial aspect in the global battle against the COVID-19 pandemic and other similar infections to protect oneself against symptoms, especially in the prevention of viral infections of the lower respiratory tract. The importance of conducting more studies to create successful herbal formulations as infection prevention measures is emphasized in this review, which looks at the function of immune-boosting nutrients, medicinal plants, and herbal treatments. We reviewed and analyzed 207 studies published from 1946 to the present using reputable databases like Google Scholar, PubMed, and NCBI. The review examined 115 plant species in total and identified 12 key nutrients, including vitamins A, D, C, omega-3 fatty acids, iron, and zinc, while noting that four plant families, Rosaceae, Asteraceae, Amaryllidaceae, and Acanthaceae, show potential against respiratory infections like influenza, RSV, and SARS-CoV. To lower the risk of infection, it is recommended to consume nutritious meals that have immune-modulating qualities. Information on the bioactive components of medicinal herbs, spices, and plants that have been effective in treating respiratory viral infections and related conditions is compiled in this review, which highlights phytoactive substances with antibacterial and antiviral activity as effective modulators to lower the risk of infections. Furthermore, it is highlighted that ancient knowledge systems, like Ayurveda and Naturopathy, should be integrated to help develop new herbal formulations. To improve immunity and lessen vulnerability to serious respiratory infections, the results highlight the need for including immune-modulating foods and plant-based medicines into everyday routines., Competing Interests: Conflict of interestThe authors declare that there are no conflict of interest., (© King Abdulaziz City for Science and Technology 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.)

Objective: To assess whether a team collaboration strategy (CONNECT) improves implementation outcomes of a family caregiver skills training program (iHI-FIVES)., Data Sources and Study Setting: iHI-FIVES was delivered to caregivers at eight Veterans Affairs (VA) medical centers. Data sources were electronic health records, staff surveys, and interviews., Study Design: In a stepped wedge cluster randomized trial, sites were randomized to a 6-month time interval start date for iHI-FIVES launch. Sites were then randomized 1:1 to either (i) CONNECT, a team collaboration training strategy plus Replicating Effective Programs (REP), brief technical support training for staff, or (ii) REP only (non-CONNECT arm). Implementation outcomes included reach (proportion of eligible caregivers enrolled) and fidelity (proportion of expected trainings delivered). Staff interviews and surveys assessed team function including communication, implementation experience, and their relation to CONNECT and iHI-FIVES implementation outcomes., Data Collection/extraction Methods: The sample for assessing implementation outcomes included 571 Veterans referred to VA home- and community-based services and their family caregivers eligible for iHI-FIVES. Prior to iHI-FIVES launch, staff completed 65 surveys and 62 interviews. After the start of iHI-FIVES, staff completed 52 surveys and 38 interviews. Mixed methods evaluated reach and fidelity by arm., Principal Findings: Fidelity was high overall with 88% of expected iHI-FIVES trainings delivered, and higher among REP only (non-CONNECT) compared with CONNECT sites (95% vs. 80%). Reach was 18% (average proportion of reach across eight sites) and higher among non-CONNECT compared with CONNECT sites (22% vs. 14%). Qualitative interviews revealed strong leadership support at high-reach sites. CONNECT did not influence self-reported team function., Conclusions: A team collaboration strategy (CONNECT), added to REP, required more resources to implement iHI-FIVES than REP only and did not substantially enhance reach or fidelity. Leadership support was a key condition of implementation success and may be an important factor for improving iHI-FIVES reach with national expansion., (Published 2024. This article is a U.S. Government work and is in the public domain in the USA.)

Objective: To examine the relationship between site-level adaptation and early adoption of Caregivers Finding Important Resources, Support, and Training (FIRST) training during national implementation across diverse Veteran Health Administration (VA) medical centers., Data Sources and Study Setting: We enrolled and evaluated 25 VA medical centers (VAMCs). Along with administrative data on site characteristics, we examined site-reported data on adaptations and intervention adoption, defined as ≥4 training classes delivered to ≥5 caregivers at 6 months from April through October 2022., Study Design: A type III hybrid implementation-effectiveness cluster randomized controlled trial, randomized VAMCs 1:1 to receive foundational (low-touch) implementation support (n = 12) or the addition of enhanced (high-touch) implementation support (n = 13)., Data Collection/extraction Methods: At key implementation phases, VAMCs were asked to report adaptations including content, contextual modifications (format, setting, personnel, and population), and training of providers. We describe site-level adaptations by arm and by organizational characteristics that included VAMC complexity level, staffing, rurality, and organizational readiness to change. We used qualitative comparative analysis to identify unique adaptations that contributed to intervention adoption at 6 months., Principal Findings: VAMCs randomized to receive enhanced support reported slightly more adaptations than those randomized to foundational support. At 6 months, VAMCs with two or more adaptations adopted Caregivers FIRST at a higher rate than those with fewer adaptations (90% vs. 44%). Staffing adaptations (e.g., who delivered the intervention), format and content (e.g., modified delivery pace), and referring provider training were unique adaptations to adopting sites., Conclusions: Site-level adaptations were diverse and occurred more frequently in sites with early adoption of Caregivers FIRST. Future research should identify best practices of supporting and monitoring intervention adaptation. Understanding the role of adaptation in early adoption success could assist other healthcare systems in implementing interventions for caregivers., (Published 2024. This article is a U.S. Government work and is in the public domain in the USA. Health Services Research published by Wiley Periodicals LLC on behalf of Health Research and Educational Trust.)

Background: The ability to determine severity of encephalopathy is crucial for early neuroprotective therapies and for predicting neurodevelopmental outcome. The objective of this study was to assess a novel brain state of newborn (BSN) trend to distinguish newborns with presence of hypoxic ischemic encephalopathy (HIE) within hours after birth and predict neurodevelopmental outcomes at 2 years of age., Method: This is a prospective cohort study of newborns at 36 weeks' gestation or later with and without HIE at birth. The Total Sanart Score (TSS) was calculated based on a modified Sarnat exam within 6 h of life. BSN was calculated from electroencephalogram (EEG) measurements initiated after birth. The primary outcome at 2 year of age was a diagnosis of death or disability using the Bayley Scales of Infant Development III., Results: BSN differentiated between normal and abnormal neurodevelopmental outcomes throughout the entire recording period from 6 h of life. Additionally, infants with lower BSN values had higher odds of neurodevelopmental impairment and HIE. BSN distinguished between normal (n = 86) and HIE (n = 46) and showed a significant correlation with the concomitant TSS., Conclusion: BSN is a sensitive real-time marker for monitoring dynamic progression of encephalopathy and predicting neurodevelopmental impairment., Impact: This is a prospective cohort study to investigate the ability of brain state of newborn (BSN) trend to predict neurodevelopmental outcome within the first day of life and identify severity of encephalopathy. BSN predicts neurodevelopmental outcomes at 2 years of age and the severity of encephalopathy severity. It also correlates with the Total Sarnat Score from the modified Sarnat exam. BSN could serve as a promising bedside trend aiding in accurate assessment and identification of newborns who may benefit from additional neuroprotection therapies., (© 2024. The Author(s).)

FN-doped carbon dots were synthesized using powdered leaves of Moringa oleifera L./Chromolaena odorata L./Tridax procumbens L./Tinospora cordifolia L./ and Lantana camara L., along with a precursor called 4,5-difluoro-1,2-benzenediamine (DFBD) and compared against the drug zaltoprofen derived carbon dots. They were assessed for their optical and structural characteristics using photoluminescence (optimal emission λ of 600 nm), vibrational (FTIR) spectroscopy (characteristic wave numbers of 1156 and 1269 cm -1 for C-F), as well as X-ray diffraction (XRD) (highest intensity at 27.56°) and high-resolution transmission electron microscopy (HR-TEM) (particles in the size range of 15-20 nm). Further, field emission scanning electron microscopy (FESEM) / energy dispersive spectroscopy (EDX) indicated FN doping of oval/oblong carbon dots. Membrane protection in percent is found to be 55.3 and 80.4 for FN-CDs and Z-FN-CDs respectively. The DPPH-free radical scavenging activity by FN-CDs was 69.4%, while with Z-FN-CDs, it was 54.2%. When tested on six bacterial strains (three each for gram-positive and gram-negative), the FN-CDs displayed a halo (ZOI) between 9 and 19 mm, whereas the Z-FN-CDs displayed a clearance zone between 9 and 17 mm. The FN-CDs showed significant emission-red-shift effects and demonstrated concentration-dependent biocompatibility and viability in neuroblastoma and beta-TC6-cell lines., (© 2024. The Author(s).)

Objective: To systematically review the literature to determine the prevalence of free flap failure in head and neck free flaps requiring vein grafting., Data Sources: Search strategies created in collaboration with a medical librarian were implemented using PubMed, Cochrane, Scopus, Web of Science, and Google Scholar from inception to August 2022., Review Methods: The population of interest included adult and pediatric patients undergoing reconstruction of oncologic or traumatic head and neck defects with a free flap requiring a vein graft that presents the success/failure rate. The primary outcome was the flap failure rate, and the secondary outcome was the flap compromise/revision rate. Inclusion and exclusion criteria were designed to capture all study designs. Initially, 2778 articles were identified by the search strategy. Two reviewers independently performed the review, data extraction for analysis, and a quality assessment. Primary Reporting Items for Systematic Reviews and Meta-analyses guidelines were followed. Meta-analysis was performed using a random effects model., Results: Eleven studies of 789 flaps were included for data extraction. Random effects meta-analysis resulted in an estimated prevalence of free flap failure of 12.30% (95% confidence interval: 6.39%-19.49%, I 2  = 77.4%)., Conclusion: Taking into account that head and neck free tissue transfers that require a vein graft are typically associated with more challenging reconstructions and the lack of a suitable alternative, vein grafts appear to be a reliable method for bridging the gap between the flap and recipient vessels in head and neck free tissue transfer when indicated., (© 2024 The Authors. Otolaryngology–Head and Neck Surgery published by Wiley Periodicals LLC on behalf of American Academy of Otolaryngology–Head and Neck Surgery Foundation.)

Introduction: Soil salinity poses a severe threat to rice production, resulting in stunted growth, leaf damage, and substantial yield losses. This study focuses on developing an early maturing seedling stage salinity tolerant rice variety by integrating conventional breeding methods with marker assisted breeding (MAB) approaches. Methods: Seedling-stage salinity tolerance Quantitative Trait Locus (QTL) "Saltol" from the salt-tolerant parent FL478 was introduced into the high-yielding but salt-sensitive rice variety ADT 45. This was achieved through a combination of conventional breeding and MAB. The breeding process involved rigorous selection, screening, and physiological parameter assessments. Results: KKL(R) 3 (KR 15066) identified as the top performing Recombinant Inbred Line (RIL), consistently demonstrating maximum mean grain yields under both salinity (3435.6 kg/ha) and normal (6421.8 kg/ha) conditions. In comparison to the early maturing, salt-tolerant national check variety CSR 10, KKL(R) 3 exhibited a substantial yield increase over 50%. Discussion: The notable improvement observed in KKL(R) 3 positions it as a promising variety for release, offering a reliable solution to maximize yields, ensure food security, and promote agricultural sustainability in both saline and non-saline environments. The study highlights the effectiveness of MAB in developing salt-tolerant rice varieties and emphasizes the significance of the Saltol QTL in enhancing seedling stage salinity tolerance. The potential release of KKL(R) 3 has the capacity to revolutionize rice production in salt affected regions, providing farmers with a reliable solution to maximize yields and contribute to food security while ensuring agricultural sustainability., 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 © 2024 Saminadane, Geddam, Krishnaswamy, Jothiganapathy, Tamilselvan, Ramadoss, Sri Hari Reddy, Singh, Singh, Platten, Gregorio, Singh, Bisht, Kota, Ponnuvel and Guntupalli.)

A growing interest in aptamer research, as evidenced by the increase in aptamer publications over the years, has led to calls for a go-to site for aptamer information. A comprehensive, publicly available aptamer dataset, which may be a repository for aptamer data, standardize aptamer reporting, and generate opportunities to expand current research in the field, could meet such a demand. There have been several attempts to create aptamer databases; however, most have been abandoned or removed entirely from public view. Inspired by previous efforts, we have published the UTexas Aptamer Database, https://sites.utexas.edu/aptamerdatabase, which includes a publicly available aptamer dataset and a searchable database containing a subset of all aptamer data collected to date (1990-2022). The dataset contains aptamer sequences, binding and selection information. The information is regularly reviewed internally to ensure accuracy and consistency across all entries. To support the continued curation and review of aptamer sequence information, we have implemented sustaining mechanisms, including researcher training protocols, an aptamer submission form, data stored separately from the database platform, and a growing team of researchers committed to updating the database. Currently, the UTexas Aptamer Database is the largest in terms of the number of aptamer sequences with 1,443 internally reviewed aptamer records., (© The Author(s) 2023. Published by Oxford University Press on behalf of Nucleic Acids Research.)

Topoisomerases are crucial enzymes in genome maintenance that modulate the topological changes during DNA metabolism. Deinococcus radiodurans, a Gram-positive bacterium is characterized by its resistance to many abiotic stresses including gamma radiation. Its multipartite genome encodes both type I and type II topoisomerases. Time-lapse studies using fluorescently tagged topoisomerase IB (drTopoIB-RFP) and DNA gyrase (GyrA-RFP) were performed to check the dynamics and localization with respect to DNA repair and cell division under normal and post-irradiation growth conditions. Results suggested that TopoIB and DNA gyrase are mostly found on nucleoid, highly dynamic, and show growth phase-dependent subcellular localization. The drTopoIB-RFP was also present at peripheral and septum regions but does not co-localize with the cell division protein, drFtsZ. On the other hand, DNA gyrase co-localizes with PprA a pleiotropic protein involved in radioresistance, on the nucleoid during the post-irradiation recovery (PIR). The topoIB mutant was found to be sensitive to hydroxyurea treatment, and showed more accumulation of single-stranded DNA during the PIR, compared to the wild type suggesting its role in DNA replication stress. Together, these results suggest differential localization of drTopoIB-RFP and GyrA-RFP in D. radiodurans and their interaction with PprA protein, emphasizing the functional significance and role in radioresistance., (© 2023. The Author(s), under exclusive licence to Springer Nature Japan KK, part of Springer Nature.)

The use of telemedicine in healthcare settings has continued to increase over the last few years. This has led to new communication-based concerns in palliative care settings. To date, there are no specific guidelines on telemedicine etiqettes relating to conducting online family meetings. This case report discusses some etiquette-failures in a telemedicine family meeting, and offers suggestions to improve communication etiqettes or 'webside manners' in these settings., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2023. No commercial re-use. See rights and permissions. Published by BMJ.)

Background: There is a critical need for development of physiological biomarkers in infants with birth asphyxia to identify the physiologic response to therapies in real time. This is an ancillary single site study of the High-Dose Erythropoietin for Asphyxia and Encephalopathy (Wu et al., 2022 [1]) to measure neurovascular coupling (NVC) non-invasively during an ongoing blinded randomized trial., Methods: Neonates who randomized in the HEAL enrolled at a single-center Level III Neonatal Intensive Care Unit were recruited between 2017 and 2019. Neurodevelopmental impairment was blinded and defined as any of the following: cognitive score <90 on Bayley Scales of Infant Toddler Development, third edition (BSID-III), Gross Motor Function Classification Score (GMFCS) ≥1., Results: All twenty-seven neonates enrolled in HEAL were recruited and 3 died before complete recording. The rank-based analysis of covariance models demonstrated lack of difference in NVC between the two groups (Epo versus Placebo) that was consistent with the observed lack of effect on neurodevelopmental outcomes., Conclusion: We demonstrate no difference in neurovascular coupling after Epo administration. These findings are consistent with overall negative trial results. Physiological biomarkers can help elucidate mechanisms of neuroprotective therapies in real time in future trials., Competing Interests: Declaration of competing interest The authors have no conflicts or any competing interest to disclose., (Copyright © 2023. Published by Elsevier B.V.)

Introduction: The case of combined drought and salinity stress is increasingly becoming a constraint to rice production, especially in coastal areas and river deltas where low rainfall not only reduces soil moisture levels but also reduces the flow of river water, resulting in intrusion of saline sea-water. A standardized screening method is needed in order to systematically evaluate rice cultivars under combined drought+salinity at the same time because sequential stress of salinity followed by drought or vice-versa is not similar to simultaneous stress effects. Therefore, we aimed to develop a screening protocol for combined drought+salinity stress applied to soil-grown plants at seedling stage., Methods: The study system used 30-L soil-filled boxes, which allowed a comparison of plant growth under control conditions, individual drought and salinity stress, as well as combined drought+salinity. A set of salinity tolerant and drought tolerant cultivars were tested, together with several popular but salinity and drought-susceptible varieties that are grown in regions prone to combined drought+salinity. A range of treatments were tested including different timings of the drought and salinity application, and different severities of stress, in order to determine the most effective that resulted in visible distinction among cultivars. The challenges related to determining a protocol with repeatable seedling stage stress treatment effects while achieving a uniform plant stand are described here., Results: The optimized protocol simultaneously applied both stresses by planting into saline soil at 75% of field capacity which was then allowed to undergo progressive drydown. Meanwhile, physiological characterization revealed that chlorophyll fluorescence at seedling stage correlated well with grain yield when drought stress was applied to vegetative stage only., Discussion: The drought+salinity protocol developed here can be used for screening rice breeding populations as part of a pipeline to develop new rice varieties with improved adaptation to combined stresses., 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 Kota, Vispo, Quintana, Cabral, Centeno, Egdane, Maathuis, Kohli, Henry and Singh.)

Bisphosphonates such as zoledronic acid are an important part of adjuvant therapy to reduce the risk of recurrence in early-stage breast cancer. Uveitis remains one of the lesser-known side effects of zoledronic acid; prompt recognition is essential to ensure patients receive appropriate and timely care to help prevent permanent vision loss. We report a case of anterior uveitis in a postmenopausal woman who presented with visual symptoms after receiving the first dose of zoledronic acid. This case report serves to educate and increase awareness of the risk of uveitis in patients who are given zoledronic acid. This is the first and only reported case of zoledronic acid when used in the adjuvant setting for the treatment of breast cancer., (Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.)

DivIVA is a member of the Min family of proteins that spatially regulates septum formation at the midcell position and cell pole determination in Bacillus subtilis. Deinococcus radiodurans, a Gram-positive coccus-shaped bacterium, is characterized by its extreme resistance to DNA-damaging agents, including radiation. D. radiodurans cells exposed to gamma radiation undergo cell division arrest by as-yet-uncharacterized mechanisms. divIVA is shown to be an essential cell division gene in this bacterium, and DivIVA of D. radiodurans (drDivIVA) interacts with genome segregation proteins through its N-terminal region. Earlier, RqkA, a gamma radiation-responsive Ser/Thr quinoprotein kinase, was characterized for its role in radioresistance in D. radiodurans. Here, we showed that RqkA phosphorylates drDivIVA at the threonine 19 (T19) residue. The phospho-mimetic mutant with a mutation of T19 to E19 in DivIVA (DivIVAT19E) is found to be functionally different from the phospho-ablative mutant (DivIVAT19A) or the wild-type drDivIVA. A DivIVAT19E-red fluorescent protein (RFP) fusion expressed in the wild-type background showed the arrest in the typical dynamics of drDivIVA and the loss of its interaction with the genome segregation protein ParA2. The allelic replacement of divIVA with divIVA T19E -rfp was not tolerated unless drDivIVA was expressed episomally, while there was no phenotypic change when the wild-type allele was replaced with either divIVA T19A -rfp or divIVA-rfp . These results suggested that the phosphorylation of T19 in drDivIVA by RqkA affected its in vivo functions, which may contribute to the cell cycle arrest in this bacterium. IMPORTANCE Deinococcus radiodurans, a radioresistant bacterium, lacks LexA/RecA-mediated DNA damage response and cell cycle regulation as known in other bacteria. However, it adjusts its transcriptome and proteome upon DNA damage. In eukaryotes, the DNA damage response and cell cycle are regulated by Ser/Thr protein kinases. In D. radiodurans, we characterized a gamma radiation-responsive Ser/Thr quinoprotein kinase (RqkA) that phosphorylated DNA repair and cell division proteins in this bacterium. In previous work, the effect of S/T phosphorylation by RqkA on activity improvement of the DNA repair proteins has been demonstrated. This study reports that Ser phosphorylation by RqkA attenuates the function of a cell polarity and plane of cell division-determining protein, DivIVA, and its cellular dynamics in response to DNA damage, which might help to understand the mechanism of cell cycle regulation in this bacterium.

Context: Health-care professionals who are involved in treating COVID patients use multiple coping strategies to overcome stress. Studies have shown that individuals having poor coping strategies and resilience are more prone toward psychological symptoms., Aims: The study was conducted to assess the coping strategies and resilience and its association with psychological symptoms of frontline doctors working in a COVID care center., Settings and Design: It was a cross-sectional study using convenient sampling conducted among 150 frontline doctors working in a COVID care center., Materials and Methods: The study tools included were sociodemographic questionnaire, Depression, Anxiety, and Stress Scale 21, Brief-COPE Scale, and Connor-Davidson Resilience Scale which was sent using Google Forms to participants after obtaining informed consent., Statistical Analysis Used: Statistical analysis was conducted using Chi-square test for categorical variables, t -test for continuous variables, and Mann-Whitney U test for ordinal data, Spearman correlation for correlations, and backward multiple linear regression to predict psychological symptoms., Results: Doctors with severe stress had higher dysfunctional coping and lower resilience scores ( P = 0.001). There was a positive correlation of stress, anxiety, and depression with problem-focused, emotional-focused, and dysfunctional coping, and there was a negative correlation between total resilience scores with stress and depression. Stress and anxiety were predicted by dysfunctional coping and resilience. Depression was predicted by dysfunctional coping (β = 1.25, P < 0.001), resilience (β = -0.08, P = 0.005), and duration of working hours per month (β = -0.008, P = 0.05)., Conclusions: There is an urgent need to look at therapeutic strategies and factors which enhance resilience and promote better coping in this population., Competing Interests: There are no conflicts of interest., (Copyright: © 2022 Industrial Psychiatry Journal.)

Filament temperature-sensitive mutant K (FtsK)/SpoIIIE family proteins are DNA translocases known as the fastest DNA motor proteins that use ATP for their movement on DNA. Most of the studies in single chromosome-containing bacteria have established the role of FtsK in chromosome dimer resolution (CDR), connecting the bacterial chromosome segregation process with cell division. Only limited reports, however, are available on the interdependent regulation of genome segregation and cell division in multipartite genome harboring (MGH) bacteria. In this study, for the first time, we report the characterization of FtsK from the radioresistant MGH bacterium Deinococcus radiodurans R1 (drFtsK). drFtsK shows the activity characteristics of a typical FtsK/SpoIIIE/Tra family. It stimulates the site-specific recombination catalyzed by Escherichia coli tyrosine recombinases. drFtsK interacts with various cell division and genome segregation proteins of D. radiodurans. Microscopic examination of different domain deletion mutants of this protein reveals alterations in cellular membrane architecture and nucleoid morphology. In vivo localization studies of drFtsK-RFP show that it forms multiple foci on nucleoid as well as on the membrane with maximum density on the septum. drFtsK coordinates its movement with nucleoid separation. The alignment of its foci shifts from old to new septum indicating its cellular dynamics with the FtsZ ring during the cell division process. Nearly, similar positional dynamicity of FtsK was observed in cells recovering from gamma radiation exposure. These results suggest that FtsK forms a part of chromosome segregation, cell envelope, and cell division machinery in D. radiodurans. IMPORTANCE Deinococcus radiodurans show extraordinary resistance to gamma radiation. It is polyploid and harbors a multipartite genome comprised of 2 chromosomes and 2 plasmids, packaged in a doughnut-shaped toroidal nucleoid. Very little is known about how the tightly packed genome is accurately segregated and the next divisional plane is determined. Filament temperature-sensitive mutant K (FtsK), a multifunctional protein, helps in pumping the septum-trapped DNA in several bacteria. Here, we characterized FtsK of D. radiodurans R1 (drFtsK) for the first time and showed it to be an active protein. The absence of drFtsK causes many defects in morphology at both cellular and nucleoid levels. The compact packaging of the deinococcal genome and cell membrane formation is hindered in ftsK mutants. In vivo drFtsK is dynamic, forms foci on both nucleoid and septum, and coordinates with FtsZ for the next cell division. Thus, drFtsK role in maintaining the normal genome phenotype and cell division in D. radiodurans is suggested.

India's air quality is in a dismal state, with many studies ascribing it to PM 2.5 . Most of these corroborate that carbonaceous aerosol (CA) constitute significant fraction of PM 2.5. However, investigations on the effect of long-term meteorological or emission changes on PM 2.5 and its components, and their associated health effects are rare. In this work, WRF-Chem simulations for three seasons over four years (2016-2019) were carried out to cogitate the spatial and temporal changes in PM 2.5 and its components in India. Model predicted PM 2.5 concentrations were in good agreement with the ground-based observations for 25 cities. PM 2.5 was highest in winter and lowest in pre-monsoon. PM 2.5 reduced by ∼8% in Indo-Gangetic Plain (IGP) but increased by ∼38% and ∼130% in south and northeast India, respectively, from 2016 to 2019. IGP witnessed three times higher average PM 2.5 concentrations than south India. No significant interannual change in CA contributions was observed, however, it peaked in the winter season. Other inorganics (OIN) were the major component of PM 2.5, contributing more than 40%. Primary organic aerosol (POA) fractions were higher in north India, while secondary inorganic aerosol (SIA) dominated south India. Transport and residential sectors were the chief contributors to CA across India. Biomass burning contributed up to ∼23% of PM 2.5 in regions of IGP during post-monsoon, with CA fractions up to 50%. Associations between PM 2.5 and its components with daily inpatient admissions from a tertiary care centre in Delhi showed that PM 2.5 and OIN had lower associations with daily hospital admissions than CA. Every 10 μg/m 3 increase in POA, black carbon (BC), and secondary organic aerosol (SOA) were associated with ∼1.09%, ∼3.07% and ∼4.93% increase in the risk of daily hospital admissions. This invigorates the need for more policies targeting CA rather than PM 2.5 to mitigate associated health risks, in India., (Copyright © 2022 Elsevier Inc. All rights reserved.)

IL-22 is a unique cytokine that is upregulated in many chronic inflammatory diseases, including asthma, and modulates tissue responses during inflammation. However, the role of IL-22 in the resolution of inflammation and how this contributes to lung repair processes are largely unknown. Here, we tested the hypothesis that IL-22 signaling is critical in inflammation resolution after repetitive exposure to agricultural dust. Using an established mouse model of organic dust extract-induced lung inflammation, we found that IL-22 knockout mice have an enhanced response to agricultural dust as evidenced by an exacerbated increase in infiltrating immune cells and lung pathology as compared to wild-type controls. We further identified that, in response to dust, IL-22 is expressed in airway epithelium and in Ym1+ macrophages found within the parenchyma in response to dust. The increase in IL-22 expression was accompanied by increases in IL-22 receptor IL-22R1 within the lung epithelium. In addition, we found that alveolar macrophages in vivo as well as THP-1 cells in vitro express IL-22, and this expression is modulated by dust exposure. Furthermore, subcellular localization of IL-22 appears to be in the Golgi of resting THP1 human monocytes, and treatment with dust extracts is associated with IL-22 release into the cytosolic compartment from the Golgi reservoirs during dust extract exposure. Taken together, we have identified a significant role for macrophage-mediated IL-22 signaling that is activated in dust-induced lung inflammation in mice., (Copyright © 2022. Published by Elsevier Inc.)

Context: The coronavirus disease 2019 (COVID-19) outbreak has led to several psychological symptoms among frontline doctors of which sleep disturbances are common. Stress due to isolation and disease-related factors are known to be associated with sleep disturbances., Aim: The aim of this study is to establish the prevalence of poor sleep and its association with psychological symptoms among doctors working in COVID-19 tertiary hospital., Settings and Design: A cross-sectional online survey was conducted among 150 doctors who were treating COVID-19 patients., Materials and Methods: The survey contained a semi-structured questionnaire including sociodemographic details, Depression Anxiety Stress Scale 21, and Pittsburgh Sleep Quality Index scale. Analysis was done using the SPSS v20., Results: Of 150 doctors, we found 67 (44.67%) and 83 (55.33%) doctors were poor sleepers and good sleepers, respectively. Those who were married ( P = 0.001), had higher working hours per month ( P = 0.001), the presence of family history of psychiatric illness ( P = 0.008), and history of substance use ( P = 0.007) were associated with poor sleep. Furthermore, poor sleep was associated with higher stress ( P = 0.001), anxiety ( P = 0.001), and depression ( P = 0.001). A multiple logistic regression revealed that family history of psychiatric illness (odds ratio [OR]-5.44, P = 0.01) and the presence of substance use (OR-7.77, P = 0.01) predicted poor sleep., Conclusion: Sleep pattern abnormalities were present in 45% of the frontline COVID-19 doctors studied. Family history of psychiatric illness and substance use was associated with higher chances of having poor sleep. It is important to recognize and manage sleep abnormalities as these could be initial signs of a psychiatric disorder or manifestations of underlying stress, especially in the vulnerable population., Competing Interests: There are no conflicts of interest., (Copyright: © 2022 Industrial Psychiatry Journal.)

Goal: It is challenging to clinically discern the severity of neonatal hypoxic ischemic encephalopathy (HIE) within hours after birth in time for therapeutic decision-making for hypothermia. The goal of this study was to determine the shortest duration of the EEG based PAC index to provide real-time guidance for clinical decision-making for neonates with HIE. Methods: Neonates were recruited from a single-center Level III NICU between 2017 and 2019. A time-dependent, PAC-frequency-averaged index, tPACm, was calculated to characterize intrinsic coupling between the amplitudes of 12−30 Hz and the phases of 1−2 Hz oscillation from 6-h EEG data at electrode P3 during the first day of life, using different sizes of moving windows including 10 s, 20 s, 1 min, 2 min, 5 min, 10 min, 20 min, 30 min, 60 min, and 120 min. Time-dependent receiver operating characteristic (ROC) curves were generated to examine the performance of the accurate window tPACm as a neurophysiologic biomarker. Results: A total of 33 neonates (mild-HIE, n = 15 and moderate/severe HIE, n = 18) were enrolled. Mixed effects models demonstrated that tPACm between the two groups was significantly different with window time segments of 3−120 min. By observing the estimates of group differences in tPACm across different window sizes, we found 20 min was the shortest window size to optimally distinguish the two groups (p < 0.001). Time-varying ROC showed significant average area-under-the-curve of 0.82. Conclusions: We demonstrated the feasibility of using tPACm with a 20 min EEG time window to differentiate the severity of HIE and facilitate earlier diagnosis and treatment initiation.

Background: Neonatal hypoxic ischemic encephalopathy (HIE) is difficult to classify within the narrow therapeutic window of hypothermia. Neurophysiological biomarkers are needed for timely differentiation of encephalopathy severity within the short therapeutic window for initiation of hypothermia therapy., Methods: A novel analysis of mean Phase Amplitude Coupling index, PAC m , of amplitudes high frequencies (12-30 Hz) coupled with phases of low (1,2 Hz) frequencies was calculated from the 6 h EEG recorded during the first day of life. PAC m values were compared to identify differences between mild versus higher-grade HIE, respectively, for each of the EEG electrodes. A receiver operating characteristic curve was generated to examine the performance of PAC m ., Results: 38 newborns with different HIE grades were enrolled in the first 6 h of life. Threshold PAC m 0.001 at Fz, O1, O2, P3, and P4 had AUC >0.9 to differentiate HIE severity and predict the persistence of moderate to severe encephalopathy that requires treatment with hypothermia., Conclusion: PAC is a promising biomarker to identify mild from higher severity of HIE after birth., Competing Interests: Declaration of Competing Interest no conflicts to disclose, (Copyright © 2021. Published by Elsevier B.V.)

This study estimates the potential source regions contributing to PM 2.5 in the capital city of Thimphu, Bhutan, during the years 2018-2020 using the ground-based data, followed by the HYSPLIT back trajectory analysis. The average PM 2.5 concentration in the entire study period was 32.47 µg/m 3 which is three times of the World Health Organization recommended limit of 10 µg/m 3 . Less than half of the days in pre-monsoon (43.47%) and post-monsoon (46.41%), and no days in winter were within the 24-h average WHO guideline of 25 μg/m 3 . During the COVID-19 lockdown imposed from August 11 to September 21 in Bhutan, only a marginal reduction of 4% in the PM 2.5 concentrations was observed, indicating that nonlocal emissions dominate the PM 2.5 concentrations in Thimphu, Bhutan. Most back trajectories in the analysis period were allocated to south or south-west sector. India was the major contributor (~ 44%), followed by Bangladesh (~ 19%), Bhutan itself (~ 19%) and China (~ 16%). This study confirms that there are significant contributions from transboundary sources to PM 2.5 concentrations in Thimphu, Bhutan, and the elevated PM 2.5 concentrations need to be tackled with appropriate action plans and interventions., Competing Interests: Conflict of interestThe authors declare that they have no conflict of interest., (© Islamic Azad University (IAU) 2021.)

Canine parvovirus-2 (CPV-2) is ubiquitously distributed in dog population worldwide causing a severe and often fatal gastroenteritis. Owing to its highly contagious nature, rapid detection of CPV is crucial in effective control of the disease. Aptamers have emerged as potential alternative to antibodies as affinity reagents in diagnostic field. Present study was aimed to select and validate ssDNA aptamers specific to CPV. Systematic evolution of ligands through exponential enrichment (SELEX) method was employed for selection of CPV structural protein (VP2) specific DNA aptamers. SELEX was performed using a pool of ssDNA library comprising 30 random nucleotide region. A total of seven rounds of SELEX were performed using VP2 protein as target antigen which yielded ten aptamers (1A-10A) with distinct sequences. Target binding of all ten aptamers was assessed by dot blot and enzyme-linked oligonucleotide assay (ELONA) which revealed that 5A, 6A, 9A, and 10A were superior binders. In silico analysis of the aptamers revealed the existence of binding site on VP2 protein, and binding pattern was similar to in vitro findings. The affinity (K D ) of all these four binders against CPV was evaluated by ELONA indicating relatively higher affinity of 6A and 10A than remaining two DNA sequences. Out of which, aptamer 6A displayed cross-reactivity with canine distemper virus and canine corona virus. Hence, aptamer 10A was considered as better binding sequence having high specificity and affinity for CPV. The study confirms the future utility of selected aptamers in development of a reliable diagnostic for rapid detection of CPV. KEY POINTS: • Canine parvovirus-specific ssDNA aptamers were identified with nanomolar affinity (100-150 nM). • Three aptamers displayed negligible cross-reactivity with other related viruses. • Aptamer 10A displayed high binding affinity and specificity to CPV., (© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

Globally, soil salinity has been on the rise owing to various factors that are both human and environmental. The abiotic stress caused by soil salinity has become one of the most damaging abiotic stresses faced by crop plants, resulting in significant yield losses. Salt stress induces physiological and morphological modifications in plants as a result of significant changes in gene expression patterns and signal transduction cascades. In this comprehensive review, with a major focus on recent advances in the field of plant molecular biology, we discuss several approaches to enhance salinity tolerance in plants comprising various classical and advanced genetic and genetic engineering approaches, genomics and genome editing technologies, and plant growth-promoting rhizobacteria (PGPR)-based approaches. Furthermore, based on recent advances in the field of epigenetics, we propose novel approaches to create and exploit heritable genome-wide epigenetic variation in crop plants to enhance salinity tolerance. Specifically, we describe the concepts and the underlying principles of epigenetic recombinant inbred lines (epiRILs) and other epigenetic variants and methods to generate them. The proposed epigenetic approaches also have the potential to create additional genetic variation by modulating meiotic crossover frequency.

Type 2 diabetes mellitus (T2DM) is a chronic progressive disorder and is associated with significant morbidity and mortality. The concept of T2DM remission and the reversal of diabetic parameters to normal levels has been gaining momentum over the past years. T2DM remission is increasingly being recognized by various global guidelines. Multiple models have been developed and validated for quantifying the extent of remission achieved. Based on favorable clinical evidence, T2DM remission can be considered as the therapeutic goal in diabetes management and, in select cases, as an alternative to expensive treatment options, which can be burdensome as T2DM progresses. This narrative review discusses the available strategies, such as lifestyle interventions, physical activity, bariatric surgery, medical nutrition therapy, and non-insulin glucose-lowering medications, for achieving T2DM remission. Although the concept of T2DM remission has emerged as a real-world option, effective implementation in routine clinical practice may not be feasible until long-term studies prove the efficacy of different approaches in this regard.

Key Message: Reproductive stage salinity tolerance is most critical for rice as it determines the yield under stress. Few studies have been undertaken for this trait as phenotyping was cumbersome, but new methodology outlined in this review seeks to redress this deficiency. Sixty-three meta-QTLs, the most important genomic regions to target for enhancing salinity tolerance, are reported. Although rice has been categorized as a salt-sensitive crop, it is not equally affected throughout its growth, being most sensitive at the seedling and reproductive stages. However, a very poor correlation exists between sensitivity at these two stages, which suggests that the effects of salt are determined by different mechanisms and sets of genes (QTLs) in seedlings and during flowering. Although tolerance at the reproductive stage is arguably the more important, as it translates directly into grain yield, more than 90% of publications on the effects of salinity on rice are limited to the seedling stage. Only a few studies have been conducted on tolerance at the reproductive stage, as phenotyping is cumbersome. In this review, we list the varieties of rice released for salinity tolerance traits, those being commercially cultivated in salt-affected soils and summarize phenotyping methodologies. Since further increases in tolerance are needed to maintain future productivity, we highlight work on phenotyping for salinity tolerance at the reproductive stage. We have constructed an exhaustive list of the 935 reported QTLs for salinity tolerance in rice at the seedling and reproductive stages. We illustrate the chromosome locations of 63 meta-QTLs (with 95% confidence interval) that indicate the most important genomic regions for salt tolerance in rice. Further study of these QTLs should enhance our understanding of salt tolerance in rice and, if targeted, will have the highest probability of success for marker-assisted selections., (© 2021. The Author(s).)

Introduction: To determine the physical characteristics of patients with symptomatic lumbar spondylolysis (LS) who have recurrent low back pain after returning to sports., Method: Fifty-three adolescent patients with symptomatic LS participated in this study. Patients with symptomatic LS were assessed for flexibility, trunk muscle strength, and Functional Movement Screen (FMS) score, and then divided into two groups according to the degree of pain experienced one month after returning to sport., Results: Twenty-four patients returned to their pre-injury sports level without pain (excellent group), while the remaining 29 patients had pain and decreased activity level during sports (pain group). The excellent group had a significantly higher shoulder mobility score on the FMS than the pain group, and the effect size was larger. However, there were no significant differences in body flexibility, muscle tightness, trunk muscle strength, or other FMS items., Discussion: The most important finding of this study is that patients with LS who have recurrent low back pain after returning to sports are characterized by poor functional upper body movement., Conclusions: Because upper body functional movement pattern may be an important factor in the management of patients with symptomatic LS, preventive rehabilitation to enhance upper body mobility and motor control should be considered for these patients., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2021 Elsevier Ltd. All rights reserved.)

The role of guanine quadruplexes (G4) in fundamental biological processes like DNA replication, transcription, translation and telomere maintenance is recognized. G4 structure dynamics is regulated by G4 structure binding proteins and is thought to be crucial for the maintenance of genome integrity in both prokaryotic and eukaryotic cells. Growing research over the last decade has expanded the existing knowledge of the functional diversity of G4 (DNA and RNA) structures across the working models. The control of G4 structure dynamics using G4 binding drugs has been suggested as the putative targets in the control of cancer and bacterial pathogenesis. This review has brought forth the collections of recent information that indicate G4 (mostly G4 DNA) roles in microbial pathogenesis, DNA damaging stress response in bacteria and mammalian cells. Studies in mitochondrial gene function regulation by G4s have also been underscored. Finally, the interdependence of G4s and epigenetic modifications and their speculated medical implications through G4 interacting proteins has been discussed.

Background: Mild hypoxic-ischemic encephalopathy (HIE) constitutes a large unstudied population with considerable debate on how to define and treat due to the dynamic evolution of the clinical signs of encephalopathy. We propose to address this gap with quantitative physiological biomarkers to aid in stratification of the disease severity. The objectives of this prospective cohort study were to measure the electroencephalographic (EEG) power as an objective biomarker of the evolution of the clinical encephalopathy in newborns with mild to severe HIE., Methods: EEG was collected in infants with HIE using four bipolar electrodes analyzed for the first three hours of the recording. Delta power (DP, 0.5 to 4 Hz) and total power (TP, 0.5 to 20 Hz) were compared between groups with different HIE severity using a univariate ordinal logistic regression model and receiver operating characteristic curves., Results: A total of 44 term-born infants with mild to severe HIE were identified within six hours of birth. The DP and TP values were significantly higher for the mild group than for the moderate group for all bipolar electrodes. A one-unit increase in DP was associated with significantly lower odds of encephalopathy. DP best distinguished mild from higher encephalopathy grades by area under the curve., Conclusions: We conclude that DP and TP are sensitive real-time biomarkers for monitoring the dynamic evolution of the encephalopathy severity in the first day of life. The quantitative EEG power may lead to timely recognition of the worsening of the encephalopathy and guide future therapeutic interventions targeting mild HIE., (Copyright © 2021 Elsevier Inc. All rights reserved.)