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Wild species of rice possess tremendous genetic variations and harbour resistance genes for biotic stresses. Bacterial blight (BB), caused by Xanthomonas oryzae pv. oryzae (Xoo), is a major disease affecting rice production globally. The current study characterized 116 accessions from 17 species of Oryza for BB disease during three seasons viz., kharif 2020, rabi 2020–21, kharif 2021 using an isolate of Xanthomonas oryzae pv. oryzae (Xoo) strain IX-020. A total of 40 accessions including Oryza rufipogon, O. nivara, O. officinalis and O. australiensis showed consistence resistance to the bacterial blight disease across the seasons. These accessions were further subjected to molecular characterization using 11 Xa genes viz., Xa4, xa5, xa13, Xa21, Xa23, Xa27(t), Xa32(t), Xa33, Xa35(t), Xa38 and xa41 with gene-specific markers to ascertain the novelty. Some key resistance genes such as Xa4, Xa23, Xa27(t), Xa32(t), Xa33, Xa35(t) and xa41 were detected in multiple accessions, with O. rufipogon and O. eichingeri harbouring particularly complex combinations of these genes. Notably, several accessions viz., IC521672 (O. nivara), EC861665 (O. officinalis), EC861677 (O. latifolia), EC861711 (O. punctata) and EC861738 (O. eichingeri) did not show the presence of any known genes indicating the possibility of novel genetic loci conferring BB resistance in these wild species. These promising accessions identified in the study are potential novel sources for bacterial leaf blight resistance in rice and will be useful for the development of durable bacterial blight resistance rice cultivars.
The neuropsychiatric morbidities associated with post-COVID status are important public health issues. The range and severity of morbidity varies with the type of clinical setting and time of assessment. There are limited studies on the long-term persistence of the post-COVID neuropsychiatric symptoms (PCNS). Hence, this study aims to determine the proportion of persistent PCNS after approximately 2 years of COVID and to find any risk factors for persistent PCNS.
Methods
This study was a cross-sectional study of randomly selected 2,281 individuals aged 18–60 years, currently living in the community, who were RT-PCR positive for COVID-19 from the National Institute of Mental Health and Neurosciences (NIMHANS) laboratory (at least 4 weeks before intake) from a period of 1 June 2020 to 31 March 2022. Among them, 927 individuals who met the study criteria were screened for PCNS through telephone interviews using a validated PCNS screening tool comprising sociodemographic details, life events inventory and 20 questions to assess for PCNS. 196 individuals who came positive for PCNS were further evaluated by in-person or web-based interviews with Structured Clinical Interviews for DSM–5-Research Version and World Health Organization-Post-COVID Case Report Form for persistent PCNS. Descriptive statistics, Chi2 test, Mann–Whitney U Test, and Binary logistic regression analysis were used for data analysis. The Institutional Ethics Committee approved this study.
Results
The median age of study participants was 34 years, and 51.3% were female. 68 out of 196 participants (34.7%) had persistent PCNS approximately 2 years (23.84 months) after COVID-19 infection. Chronic fatigue (10.2%), depression (6.1%), cognitive symptoms (4%), hyposmia (3.6%), hypogeusia (3.6%), anxiety (2.5%), panic disorder (2.5%) and insomnia (2%) are the main persistent symptoms. The median age of the participants with persisted PCNS (40 years) is higher compared with the median age of the participants without persisted PCNS (34 years) [Mann–Whitney U = 5,225.0, P = 0.021]. Even though significant associations were found between the development of PCNS after 4 weeks of COVID and female gender, symptomatic COVID-19, severity of COVID-19 (oxygen supplementation), hospital admission, total number of times of COVID-19, and presence of life events, this association were not found with persistence of PCNS at 2 years.
Conclusion
This study revealed that one-third of the individuals with PCNS had persistent symptoms after 2 years. Chronic fatigue is the most common persistent PCNS. Middle-aged and above age groups were found to be a risk factor for persistent PCNS.
This study aims to explore the characteristics of the individuals who engage in suicidal behaviour.
Hypothesis:
1) Patients attempting suicide are more likely to have co-existing axis I or axis II disorder when compared with patients with no reported suicidal attempt.
2) Various OCD related domain like symptom types, symptom severity, age of onset of OCD, duration of illness and presence of other OCD spectrum disorder has higher chances of attempting suicide.
3) Family history of suicidal behaviour increases the risk of suicidality.
Methods
Retrospective file review of all patients registered at the OCD clinic, NIMHANS hospital, Bangalore, India between Jan 2008–Dec 2018 was undertaken. Out of 1017, 814 met the eligibility criteria. Individuals with a documented suicide attempt were compared with those without. Chi square test, unpaired t-test and Regression analysis was done to identify predictors of life-time attempt.
Results
Lifetime attempt was noted in 19.8% patients (161 out of 814). On comparison, female gender, unemployment, lower socioeconomic status, severe to extreme avoidance, severe to most severe CGIs, presence of depressive disorder, history of engagement in suicidal acts, past NSSI, past suicidal ideation, younger age at onset of OCD, younger age at first OCD consultation and YBOCS at index assessment are significantly associated with higher risk of suicidal attempts. Female gender, BPL status, age at onset of OCD and presence of depressive disorder can significantly predict lifetime suicidal attempts. Out of 814 eligible patients reviewed, 32 patients i.e. 4.79% had made ≥1 suicide attempt after their first contact to the OCD clinic. Risk of re-attempting suicide is highest in the first three years post index visit to the OCD clinic.
Conclusion
One in five individuals with OCD attempt suicide with higher risk in female population, greater illness severity (higher baseline YBOCS scores and early age of OCD onset) and presence of comorbid depression. Importantly, risk of repeated attempt is greatest within three years of contact but no factor could determine reattempt risk. Hence, regular screening for suicidality in patients with OCD could be of utmost importance in preventing any future attempts. The findings also highlight the need for future studies that explore the neurobiological underpinnings of suicide vulnerability in OCD.
The 2014 US National Strategy for Combating Antibiotic-Resistant Bacteria (CARB) aimed to reduce inappropriate inpatient antibiotic use by 20% for monitored conditions, such as community-acquired pneumonia (CAP), by 2020. We evaluated annual trends in length of therapy (LOT) in adults hospitalized with uncomplicated CAP from 2013 through 2020.
Methods:
We conducted a retrospective cohort study among adults with a primary diagnosis of bacterial or unspecified pneumonia using International Classification of Diseases Ninth and Tenth Revision codes in MarketScan and the Centers for Medicare & Medicaid Services databases. We included patients with length of stay (LOS) of 2–10 days, discharged home with self-care, and not rehospitalized in the 3 days following discharge. We estimated inpatient LOT based on LOS from the PINC AI Healthcare Database. The total LOT was calculated by summing estimated inpatient LOT and actual postdischarge LOT. We examined trends from 2013 to 2020 in patients with total LOT >7 days, which was considered an indicator of likely excessive LOT.
Results:
There were 44,976 and 400,928 uncomplicated CAP hospitalizations among patients aged 18–64 years and ≥65 years, respectively. From 2013 to 2020, the proportion of patients with total LOT >7 days decreased by 25% (68% to 51%) among patients aged 18–64 years and by 27% (68%–50%) among patients aged ≥65 years.
Conclusions:
Although likely excessive LOT for uncomplicated CAP patients decreased since 2013, the proportion of patients treated with LOT >7 days still exceeded 50% in 2020. Antibiotic stewardship programs should continue to pursue interventions to reduce likely excessive LOT for common infections.
The COVID-19 pandemic accelerated the development of decentralized clinical trials (DCT). DCT’s are an important and pragmatic method for assessing health outcomes yet comprise only a minority of clinical trials, and few published methodologies exist. In this report, we detail the operational components of COVID-OUT, a decentralized, multicenter, quadruple-blinded, randomized trial that rapidly delivered study drugs nation-wide. The trial examined three medications (metformin, ivermectin, and fluvoxamine) as outpatient treatment of SARS-CoV-2 for their effectiveness in preventing severe or long COVID-19. Decentralized strategies included HIPAA-compliant electronic screening and consenting, prepacking investigational product to accelerate delivery after randomization, and remotely confirming participant-reported outcomes. Of the 1417 individuals with the intention-to-treat sample, the remote nature of the study caused an additional 94 participants to not take any doses of study drug. Therefore, 1323 participants were in the modified intention-to-treat sample, which was the a priori primary study sample. Only 1.4% of participants were lost to follow-up. Decentralized strategies facilitated the successful completion of the COVID-OUT trial without any in-person contact by expediting intervention delivery, expanding trial access geographically, limiting contagion exposure, and making it easy for participants to complete follow-up visits. Remotely completed consent and follow-up facilitated enrollment.
Soil moisture deficit is the major constraint for sesame crop production during its main rainfed and summer cultivation seasons. In summer cultivation, the crop frequently gets exposed to soil moisture deficit at various crop growth stages. Therefore, it is essential to identify the traits along with promising genotypes adapted to soil moisture deficit. A set of 35 sesame genotypes with checks was used to quantify the variation in morpho-physiological, yield, and quality traits under irrigated (WW) and deficit soil moisture stress (WS) conditions in the summer seasons of 2021 and 2022. The analysis of variance revealed the presence of high variability among the genotypes for various measured traits. The mean performance indicated that WS negatively affects the growth, development, yield and quality traits. Moreover, the correlation, path analysis and D2 analysis studies suggested that the traits, viz. leaf area (LA), total dry matter (TDM), canopy temperature (CT), number of branches per plant (NBP) and number of seeds per capsule (NSC) were significantly associated with seed yield under both the conditions. Quality traits like palmitic acid and oleic acid correlated positively with seed yield, particularly under WS. Furthermore, the genotypes with lower canopy temperatures were found to be better seed yielders under WS. In addition, mean performance and cluster analysis suggested that the genotypes: IC- 205776, JSCDT-112, JCSDT-26, IC-205610, and IC-204300, secured higher seed yield along with superior agronomical traits and net photosynthetic rate. These selected genotypes were most promising and could be used in future sesame crop improvement programmes.
The U.S. Department of Agriculture–Agricultural Research Service (USDA-ARS) has been a leader in weed science research covering topics ranging from the development and use of integrated weed management (IWM) tactics to basic mechanistic studies, including biotic resistance of desirable plant communities and herbicide resistance. ARS weed scientists have worked in agricultural and natural ecosystems, including agronomic and horticultural crops, pastures, forests, wild lands, aquatic habitats, wetlands, and riparian areas. Through strong partnerships with academia, state agencies, private industry, and numerous federal programs, ARS weed scientists have made contributions to discoveries in the newest fields of robotics and genetics, as well as the traditional and fundamental subjects of weed–crop competition and physiology and integration of weed control tactics and practices. Weed science at ARS is often overshadowed by other research topics; thus, few are aware of the long history of ARS weed science and its important contributions. This review is the result of a symposium held at the Weed Science Society of America’s 62nd Annual Meeting in 2022 that included 10 separate presentations in a virtual Weed Science Webinar Series. The overarching themes of management tactics (IWM, biological control, and automation), basic mechanisms (competition, invasive plant genetics, and herbicide resistance), and ecosystem impacts (invasive plant spread, climate change, conservation, and restoration) represent core ARS weed science research that is dynamic and efficacious and has been a significant component of the agency’s national and international efforts. This review highlights current studies and future directions that exemplify the science and collaborative relationships both within and outside ARS. Given the constraints of weeds and invasive plants on all aspects of food, feed, and fiber systems, there is an acknowledged need to face new challenges, including agriculture and natural resources sustainability, economic resilience and reliability, and societal health and well-being.
Patients with hearing loss and tinnitus face lengthy waits to be seen in the ENT clinic. SHOEBOX Audiometry is an iPad-based, audiometric screening tool. A virtual hearing loss and non-pulsatile tinnitus clinic involving an ENT specialist virtually assessing cases based on the SHOEBOX audiogram, a patient symptom questionnaire and the primary care referral letter were implemented. This service evaluation explored the outcomes of the virtual clinic in reducing the need for a face-to-face ENT appointment.
Method
This was a retrospective service evaluation of the first six months of the virtual hearing loss and non-pulsatile tinnitus clinic.
Results
A total of 210 patients were included: 34.8 per cent (73) were discharged without requiring audiologist assessment or an ENT appointment, 51.9 per cent (109) required formal audiological assessment, 36.7 per cent (77) required imaging and only 13.8 per cent (29) required a face-to-face ENT appointment.
Conclusion
A virtual hearing loss and non-pulsatile tinnitus clinic minimised the number of patients requiring a traditional face-to-face clinic appointment within ENT.
Edited by
Helen Liapis, Ludwig Maximilian University, Nephrology Center, Munich, Adjunct Professor and Washington University St Louis, Department of Pathology and Immunology, Retired Professor
Cystic kidney disease is defined broadly by ectasia or dilation of hollow epithelial-lined nephrons and collecting ducts spanning from Bowman’s capsules to the ducts of Bellini. The number of cysts per kidney can range from single (isolated) to innumerous. The distribution of cysts may be focal or diffuse, having widespread organ involvement. Cystogenesis requires two stages: cyst initiation (the triggering event) and cyst expansion (maturation). When this occurs early in life, cysts are considered congenital. They may be sporadically acquired or transmitted in an autosomal dominant (AD) or autosomal recessive (AR) pattern. Historically, congenital and inherited cysts were considered to have disparate etiologies, but gene defects have been recently implicated in the formation of congenital cysts. Cysts may be syndromic (concurrently involving other organ systems in consistent patterns) or non-syndromic. While isolated renal cysts are often asymptomatic, most inherited polycystic cystic diseases (PKD), including ADPKD and ARPKD, symptomatically affect both kidneys (bilateral). In this chapter we focus on ADPKD and ARPKD in children. CAKUT is discussed in Chapter 1, tuberous sclerosis in Chapter 14 and glomerulocystic kidney disease in Chapter 15.
Long-term sequelae of severe acute respiratory coronavirus-2 (SARS-CoV-2) infection may include increased incidence of diabetes. Here we describe the temporal relationship between new type 2 diabetes and SARS-CoV-2 infection in a nationwide database. We found that while the proportion of newly diagnosed type 2 diabetes increased during the acute period of SARS-CoV-2 infection, the mean proportion of new diabetes cases in the 6 months post-infection was about 83% lower than the 6 months preinfection. These results underscore the need for further investigation to understand the timing of new diabetes after COVID-19, etiology, screening, and treatment strategies.
The coronavirus disease 2019 pandemic caused substantial changes to healthcare delivery and antibiotic prescribing beginning in March 2020. To assess pandemic impact on Clostridioides difficile infection (CDI) rates, we described patients and trends in facility-level incidence, testing rates, and percent positivity during 2019–2020 in a large cohort of US hospitals.
Methods:
We estimated and compared rates of community-onset CDI (CO-CDI) per 10,000 discharges, hospital-onset CDI (HO-CDI) per 10,000 patient days, and C. difficile testing rates per 10,000 discharges in 2019 and 2020. We calculated percent positivity as the number of inpatients diagnosed with CDI over the total number of discharges with a test for C. difficile. We used an interrupted time series (ITS) design with negative binomial and logistic regression models to describe level and trend changes in rates and percent positivity before and after March 2020.
Results:
In pairwise comparisons, overall CO-CDI rates decreased from 20.0 to 15.8 between 2019 and 2020 (P < .0001). HO-CDI rates did not change. Using ITS, we detected decreasing monthly trends in CO-CDI (−1% per month, P = .0036) and HO-CDI incidence (−1% per month, P < .0001) during the baseline period, prior to the COVID-19 pandemic declaration. We detected no change in monthly trends for CO-CDI or HO-CDI incidence or percent positivity after March 2020 compared with the baseline period.
Conclusions:
While there was a slight downward trajectory in CDI trends prior to March 2020, no significant change in CDI trends occurred during the COVID-19 pandemic despite changes in infection control practices, antibiotic use, and healthcare delivery.
We report a new zircon U–Pb age of 1257 ± 6 Ma for the Punugodu granite (PG) pluton in the Eastern Dharwar Craton (EDC), Southern India. The Mesoproterozoic PG is alkali feldspar hypersolvus granite emplaced at shallow crustal level, as evident from the presence of rhyodacite xenoliths and hornfelsic texture developed in the metavolcanic country rocks of the Neoarchaean Nellore Schist Belt (NSB). Geochemically, the PG is metaluminous, ferroan and alkali-calcic, and is characterized by high SiO2 and Na2O + K2O, Ga/Al ratios >2.6, high-field-strength elements and rare earth element (REE) contents with low CaO, MgO and Sr, indicating its similarity to anorogenic, alkali (A-type) granite. The highly fractionated REE patterns with negative europium anomalies of PG reflect its evolved nature and feldspar fractionation. Mafic (MME) to hybrid (HME) microgranular enclaves represent distinct batches of mantle-derived magmas that interacted, mingled and undercooled within the partly crystalline PG host magma. Felsic microgranular enclaves (FME) having similar mineralogical and geochemical characteristics to the host PG most likely represent fragments of marginal rock facies of the PG pluton. The PG appears to be formed from an oceanic island basalt (OIB)-like source in an anorogenic, within-plate setting. The emplacement of PG (c. 1257 Ma) in the vicinity of Mesoproterozoic Kanigiri Ophiolite (c. 1334 Ma) shows an age gap of nearly 77 Ma, which probably suggests PG emplacement in an extensional environment along a terrain boundary at the western margin of the Neoarchaean NSB in the EDC.
‘Shareholder democracy’ and ‘corporate purpose’ are concepts periodically cited in the context of dual-class stock.Shareholder democracy, and the contention that one share, one vote is democratic or just plain fair, although an elegant soundbite, has been disputed, with many commentators opining that one share per shareholder is a better representation of democracy, and that analogies between corporate governance and political theory are built on fragile grounds.In relation to corporate purpose, commentators have vacillated between ideologies of shareholder primacy and stakeholder pluralism over the years, with numerous ‘theories of the firm’ being proposed to justify, often opposing, ideals.However, the United Kingdom’s regulatory environment prioritises shareholders, the premium tier prohibition on dual-class stock stems from a presumption that it harms public shareholders and institutional shareholders, who are traditionally antagonistic to dual-class stock, enjoy significant influence on the UK public markets.Therefore, whatever one’s predilections on the shareholder primacy/stakeholder pluralism debate, when considering dual-class stock, the impact on public shareholders is key.Additionally, although Big Tech has attracted a hostile press in recent years, the potentially pernicious dominance of large tech companies is not an attribute unique to dual-class stock, and, in fact, dual-class stock could inspire greater competition in the industry.