Evaluation of BG, NPR1, and PAL in cotton plants through Virus Induced gene silencing reveals their role in whitefly stress.

Whitefly is one of the most hazardous insect pests that infests a wide range of host plants and causes huge damage to crop worldwide. In order to engineer plants resilient to whitefly stress, it is important to identify and validate the responsive genes by exploring the molecular dynamics of plants under stress conditions. In this study three genes BG, NPR1, and PAL genes have been studied in cotton for elucidating their role in whitefly stress response. Initially, insilico approach was utilized to investigate the domains and phylogeny of BG, NPR1 and PAL genes and found out that these genes showed remarkable resemblance in four cotton species Gossypium hirsutum, G. barbadense, G. arboreum, and G. raimondii. In BG proteins the main functional domain was X8 belonging to glycohydro superfamily, in NPR1 two main functional domains were BTB_POZ at N terminal and NPR1_like_C at C terminal. In PAL functional domain PLN was found which belongs to Lyase class I superfamily. The promoter analysis of these genes displayed enrichment of hormone, stress and stimuli responsive cis elements. Through Virus Induced Gene Silencing (VIGS), these genes were targeted and kept under whitefly infestation. Overall, the whitefly egg and nymph production were observed 60-70% less on gene down regulated plants as compared to control plants. The qPCR-based expression analysis of certain stress-responsive genes showed that in BG down regulated plants the elevated expression of these whitefly responsive genes was detected, in NPR1 down regulated plants JAZ1 and HSP were found up regulated, ERF1 and WRKY40 didn't show significant differential expression, while MAPK6 was slightly down regulated. In PAL down regulated plants ERF1 and JAZ1 showed elevated expression while others didn't show significant alternation. Differential expression in gene down-regulated plants showed that whitefly responsive genes act in a complex inter signaling pathway and their expression impact each other. This study provides valuable insight into the structural and functional analysis of important whitefly responsive genes BG, NPR1, and PAL. The results will pave a path to future development of whitefly resilient crops.

Prevalence and clinical outcomes of COVID-19 in patients with pre-existing celiac disease: A systematic review and meta-analysis.

There is a scarcity of scientific evidence addressing the outcomes of COVID-19 in celiac disease (CD) patients. This systematic review and meta-analysis aimed to evaluate the correlation between pre-existing CD and COVID-19. A rigorous literature search was conducted using multiple databases. All eligible observational studies were included from around the globe. The random effect model calculated the pooled prevalence and associated 95% confidence intervals (CI). Mantel-Haenszel odds ratios were produced to report the overall effect size using random effect models for severity and mortality outcomes. Funnel plots, Egger regression tests, and Begg-Mazumdar's rank correlation test were used to appraise publication bias. Data from 11 articles consisting of 44,378 CD patients were obtained. Overall pooled random-effects estimate of SARS-CoV-2 infection in CD patients was 4.25% (95% CI, I2  = 98%). Our findings also indicated that pre-existing CD was not associated with an increased risk of hospitalisation with COVID-19 illness (OR = 1.04, 95% CI 0.87-1.24, I2  = 0%) and mortality due to illness (OR = 0.92, 95% CI 0.56-1.5, I2  = 45%) compared with patients without pre-existing CD. No significant publication bias was evident in the meta-analysis. The preliminary data from our analysis suggest that SARS-CoV-2 infection in patients with pre-existing CD is not associated with an increased risk of hospitalisation or mortality. Additional studies are required to overcome the restrictions of the limited data available at present.

Propofol Infusion and Acute Pancreatitis: A Review.

BACKGROUND: Propofol is a short-acting anesthetic used to induce sedation in various ambulatory and inpatient surgical procedures. It is a US Food and Drug Administration approved lipid-based intravenous hypnotic agent, which has been used clinically for the induction and maintenance of anesthesia for over 3 decades. In addition to general anesthesia, it is used to sedate patients undergoing mechanical ventilation or short procedures such as endoscopy, transesophageal echocardiogram, and abscess drainage. An infrequent but serious complication of propofol is acute pancreatitis (AP), with potentially significant morbidity and possible mortality. In this review, we will discuss the proposed mechanisms of AP secondary to propofol, a number of reported cases, studies conducted, and treatment strategies. AREAS OF UNCERTAINTY: There are several case reports in the literature that have shown an association between propofol and pancreatitis. The exact mechanism behind propofol-induced pancreatitis is not fully understood, but proposed mechanisms include hypertriglyceridemia (HTG), hypersensitivity, or direct pancreatic toxicity of the drug. Although the association of propofol and pancreatitis has not been proven conclusively, clinicians should be aware of this possible rare complication to prevent the devastating consequences of AP. DATA SOURCES: We gathered articles on previously documented case reports and up-to-date studies on propofol-induced pancreatitis by searching databases such as PubMed and Google Scholar. RESULTS: Based on previous studies and case reports, we suggest that propofol should be added to a list of drugs having a direct association with AP. CONCLUSIONS: Although, the mechanism of propofol-induced pancreatitis is not fully understood, and the causal relationship of propofol-induced hypertriglyceridemia or idiosyncratic drug reaction has remained unproven. Clinicians should be aware of the association between propofol and pancreatitis, and any patient presenting with abdominal pain after propofol infusion should be evaluated for AP and treated promptly to avoid complications.