A pair of DUF538 domain-containing proteins modulates plant growth and trichome development through the transcriptional regulation of GLABRA1 in Arabidopsis thaliana.

SMALLER TRICHOMES WITH VARIABLE BRANCHES (SVB) is an emerging plant growth regulator in trichome development, endoplasmic reticulum stress response, and phosphoinositide signaling, and belongs to the land plant-specific DUF538 domain-containing protein family. Despite its multifaceted roles, the functions of this protein family are poorly understood in plant growth and development. Here, we report that SVB-like (SVBL), the closest homolog of SVB, modulates plant growth and trichome development with SVB in Arabidopsis thaliana. Although none of the single mutants showed an obvious growth defect, the double mutants of svb svbl exhibited dwarfed plant growth. In trichome development, the defects in svb mutant were greatly enhanced by the additional mutation in SVBL, despite the single knockout of SVBL showing the mild defects. The double mutation reduced the transcript level of one of the central hub genes for trichome development, GLABRA1 (GL1), which in turn affects the other downstream genes, GLABRA2 (GL2), TRANSPARENT TESTA GLABRA2 (TTG2), TRIPTYCHON (TRY), CAPRICE (CPC), and ENHANCER OF TRY AND CPC1 (ETC1). In situ translational reporter assays showed that SVB and SVBL share highly similar localization patterns both at tissue and subcellular levels. The present study suggests that SVB and SVBL play a pivotal role in plant growth and trichome development by affecting a specific subset of known trichome developmental regulators, highlighting the importance of the DUF538 protein family in higher plants.

What's unique? The unfolded protein response in plants.

The investigation of a phenomenon called the unfolded protein response (UPR) started approximately three decades ago, and we now know that the UPR is involved in a number of cellular events among metazoans, higher plants, and algae. The relevance of the UPR in human diseases featuring protein folding defects, such as Alzheimer's and Huntington's diseases, has drawn much attention to the response in medical research to date. While metazoans and plants share similar molecular mechanisms of the UPR, recent studies shed light on the uniqueness of the plant UPR, with plant-specific protein families appearing to play pivotal roles. Given the considerable emphasis on the original discoveries of key factors in metazoans, this review highlights the uniqueness of the plant UPR based on current knowledge.

Temperature-dependent self-assembly of biofilaments during red blood cell sickling.

Molecular self-assembly plays a vital role in various biological functions. However, when aberrant molecules self-assemble to form large aggregates, it can give rise to various diseases. For example, sickle cell disease and Alzheimer's disease are caused by self-assembled hemoglobin fibers and amyloid plaques, respectively. Here, we study the assembly kinetics of such fibers using kinetic Monte Carlo simulation. We focus on the initial lag time of these highly stochastic processes, during which self-assembly is very slow. The lag time distributions turn out to be similar for two very different regimes of polymerization, namely, (a) when polymerization is slow and depolymerization is fast and (b) the opposite case, when polymerization is fast and depolymerization is slow. Using temperature-dependent on- and off-rates for hemoglobin fiber growth, reported in recent in vitro experiments, we show that the mean lag time can exhibit non-monotonic behavior with respect to the change in temperature.

Clogging-free continuous operation with whole blood in a radial pillar device (RAPID).

Pillar-based passive microfluidic devices combine the advantages of simple designs, small device footprint, and high selectivity for size-based separation of blood cells. Most of these device designs have been validated with dilute blood samples. Handling whole blood in pillar-based devices is extremely challenging due to clogging. The high proportion of cells (particularly red blood cells) in blood, the varying sizes and stiffness of the different blood cells, and the tendency of the cells to aggregate lead to clogging of the pillars within a short period. We recently reported a ra dial pi llar d evice (RAPID) design for continuous and high throughput separation of multi-sized rigid polystyrene particles in a single experiment. In the current manuscript, we have given detailed guidelines to modify the design of RAPID for any application with deformable objects (e.g. cells). We have adapted RAPID to work with whole blood without any pre-processing steps. We were successful in operating the device with whole blood for almost 6 h, which is difficult to achieve with most pillar-based devices. The availability of multiple parallel paths for the cells and the provision for a self-generating cross flow in the device design were the main reasons behind the minimal clogging in our device. We also observed that a vibrator motor attached to the inlet tubing occasionally disturbed the cell clumps. As an illustration of the improved device design, we demonstrated up to ∼ 60-fold enrichment of platelets.

A Radial Pillar Device (RAPID) for continuous and high-throughput separation of multi-sized particles.

Pillar-based microfluidic sorting devices are preferred for isolation of rare cells due to their simple designs and passive operation. Dead-end pillar filters can efficiently capture large rare cells, such as, circulating tumor cells (CTCs), nucleated red blood cells (NRBCs), CD4 cells in HIV patients, etc., but they get clogged easily. Cross flow filters are preferred for smaller rare particles (e.g. separating bacteria from blood), but they need additional buffer inlets and a large device footprint for efficient operation. We have designed a new microparticle separation device i.e. Ra dial Pi llar D evice (RAPID) that combines the advantages of dead-end and cross flow filters. RAPID can simultaneously isolate both large and small rare particles from a mixed population, while functioning for several hours without clogging. We have achieved simultaneous separation of 10 µ m and 2 µ m polystyrene particles from a mixture of 2 µ m, 7 µ m and 10 µ m particles. RAPID achieved average separation purity and recovery in excess of ∼90%. The throughput of our device (∼3ml/min) is 10 and 100 times higher compared to cross flow and dead-end filters respectively, thereby justifying the name RAPID.

Efficacy of tryushnadya churna in metabolic syndrome with obesity - A randomized double blind controlled clinical trial.

BACKGROUND: Metabolic syndrome (MetS) with obesity has significant mortality and morbidity. Integrative Ayurveda management is explored for it's possible effect. AIM: To evaluate the effect of Tryushnadi churna in the management of Metabolic syndrome with obesity. METHODS: Study is a Randomized, Controlled, double blind, parallel group comparative clinical trial. 48 participants meeting the National Cholesterol Education Programme Adult Treatment panel 3 diagnostic criteria were recruited in the study. They were divided in two 2 groups. Placebo group were administered with Placebo 1 gm twice a day, Ayurveda diet and yoga. Tryushnadi Group were intervened with Tryushnadi churna 1 gm twice a day, Ayurveda diet and yoga. Interventions were for 90 days. Assessments criteria included Weight, BMI,Waist circumference (WC), Waist hip ratio, Skin fold thickness (SFT), Body fat, blood pressure, WHO-QOL BREF scale, Clinical Global Impression Scale (CGI)- Severity, Global improvement and Efficacy index, Fasting blood sugar (FBS) were assessed on every 30th day. Other blood parameters like Glycated haemoglobin (HbA1c), Triglycerides, High density lipoproteins (HDL), Low density lipoproteins (LDL), Total cholesterol (TC) were evaluated at pre and post study. RESULTS: Between groups comparison showed, Tryushnadi group had significant improvements in BMI, Weight, WHOQOL-Bref and had large effect size. Both the groups showed improvement in WC, body fat, SFT, CGI severity, CGI efficacy index and improvement in quality of life in within group assessment. CONCLUSION: Study showed that Tryushnadi churna was effective in management of MetS with Obesity. Integrated management of Ayurveda medicine, Ayurveda diet and yoga had beneficial effect.

The Barrier to Accessing Dental Healthcare Services Among the Institutionalized Visually Impaired Adults: A Qualitative Study.

Many studies have focused on the overall oral health of people with visual impairment, but there is a dearth of studies on the barriers to accessing dental healthcare services among institutionalized visually impaired people. Therefore, the current study aims to assess the barriers to accessing dental healthcare services among institutionalized visually impaired people. METHODS: A qualitative study design was conducted over the course of 10 months among institutionalized visually impaired individuals. A semi-structured interview was conducted among the participants. Interviews were audio-recorded, transcribed, translated, and qualitatively analyzed using MAXQDA software, version 22.0 (VERBI Software, Berlin). RESULTS: A total of 20 participants participated in the study. Three levels were used to classify the investigated barriers: the individual's level, which pertains to the obstacles they encountered in receiving oral health care and their viewpoints on the way that care is provided; the interpersonal degree and the system level, in order to determine the broader components and their impact. CONCLUSION: This study gives insight into the problems people have in assessing the dental services and facilities available. Three levels were used to identify the barriers among the study participants. Six themes emerged in the study that described their problems, which affected their mental health directly.

Assessment of Oral Health Status among the Sevayats of Shree Sakhigopal Temple, Puri - A Cross-sectional Study.

Aim: To assess the oral health status of the Sevayats of Sakhigopal temple, Puri, Odisha. Methodology: An assessment of the oral health status of 111 Sevayats at the Sakhigopal temple in Puri was carried out using a cross-sectional survey. The World Health Organization oral health assessment form for adults (2013) was used to collect data. Chi-square test and one-way analysis of variance were the statistical tests used for the investigation using Statistical Package for the Social Sciences 27 version. When the P value was less than 0.05, it was deemed statistically significant. Results: The mean DMFT of all the participants was 3.70 ± 1.71. The prevalence of caries was 91%. Bleeding and periodontal pocket were present in 82.9% and 83.8% of Sevayats, respectively. Conclusion: There was a higher prevalence of dental caries and periodontal disease among the subjects.

Differential sensitivity to hypoxia enables shape-based classification of sickle cell disease and trait blood samples at point of care.

Red blood cells (RBCs) become sickle-shaped and stiff under hypoxia as a consequence of hemoglobin (Hb) polymerization in sickle cell anemia. Distinguishing between sickle cell disease and trait is crucial during the diagnosis of sickle cell disease. While genetic analysis or high-performance liquid chromatography (HPLC) can accurately differentiate between these two genotypes, these tests are unsuitable for field use. Here, we report a novel microscopy-based diagnostic test called ShapeDx™ to distinguish between disease and trait blood in less than 1 h. This is achieved by mixing an unknown blood sample with low and high concentrations of a chemical oxygen scavenger and thereby subjecting the blood to slow and fast hypoxia, respectively. The different rates of Hb polymerization resulting from slow and fast hypoxia lead to two distinct RBC shape distributions in the same blood sample, which allows us to identify it as healthy, trait, or disease. The controlled hypoxic environment necessary for differential Hb polymerization is generated using an imaging microchamber, which also reduces the sickling time of trait blood from several hours to just 30 min. In a single-blinded proof-of-concept study conducted on a small cohort of clinical samples, the results of the ShapeDx™ test were 100% concordant with HPLC results. Additionally, our field studies have demonstrated that ShapeDx™ is the first reported microscopy test capable of distinguishing between sickle cell disease and trait samples in resource-limited settings with the same accuracy as a gold standard test.

Motion blur microscopy: in vitro imaging of cell adhesion dynamics in whole blood flow.

Imaging and characterizing the dynamics of cellular adhesion in blood samples is of fundamental importance in understanding biological function. In vitro microscopy methods are widely used for this task but typically require diluting the blood with a buffer to allow for transmission of light. However, whole blood provides crucial signaling cues that influence adhesion dynamics, which means that conventional approaches lack the full physiological complexity of living microvasculature. We can reliably image cell interactions in microfluidic channels during whole blood flow by motion blur microscopy (MBM) in vitro and automate image analysis using machine learning. MBM provides a low cost, easy to implement alternative to intravital microscopy, for rapid data generation where understanding cell interactions, adhesion, and motility is crucial. MBM is generalizable to studies of various diseases, including cancer, blood disorders, thrombosis, inflammatory and autoimmune diseases, as well as providing rich datasets for theoretical modeling of adhesion dynamics.

Review of Mesenteric Ischemia in COVID-19 Patients.

The new coronavirus (COVID-19) infection, first detected in Wuhan, China in 2019 has become a pandemic that has spread to nearly every country in the world. Through October 11, 2021, more than 23 billion confirmed cases and 4.8 million fatalities were reported globally. The bulk of individuals afflicted in India during the first wave were elderly persons. The second wave, however, resulted in more severe diseases and mortality in even younger age groups due to mutations in the wild virus. Symptoms may range from being asymptomatic to fatal acute respiratory distress syndrome (ARDS). In addition to respiratory symptoms, patients may present with gastrointestinal symptoms such as stomach pain, vomiting, loose stools, or mesenteric vein thrombosis. The frequency of patients presenting with thromboembolic symptoms has recently increased. According to certain studies, the prevalence of venous thromboembolism among hospitalized patients ranges from 9 to 25%. It was also shown that the incidence is significantly greater among critically sick patients, with a prevalence of 21-31%. Although the exact origin of thromboembolism is unknown, it is considered to be produced by several altered pathways that manifest as pulmonary embolism, myocardial infarction, stroke, limb gangrene, and acute mesenteric ischemia. Acute mesenteric ischemia (AMI) is becoming an increasingly prevalent cause of acute surgical abdomen in both intensive care unit (ICU) and emergency room (ER) patients. Mesenteric ischemia should be evaluated in situations with unexplained stomach discomfort. In suspected situations, appropriate imaging techniques and early intervention, either non-surgical or surgical, are necessary to avert mortality. The purpose of this article is to look at the data on acute mesenteric ischemia in people infected with COVID-19.

Expression of ER, PR, and HER-2 Neu and correlation with tumor markers in gall bladder carcinoma.

Background: Females having a large proportion of gallbladder carcinoma (GBC) and a higher incidence of gallstones pointed toward the role of sex hormones in GBC development. In this study, we evaluated the expression of Estrogen receptor (ER), Progesterone receptor (PR), and Her2/neu and their correlation with tumor markers and clinicopathological parameters in the GBC. Methods: A total of 50 patients of GBC and 42 patients in control group undergoing surgery for other conditions were taken. The patient's biopsy sample's paraffin block was tested for ER, PR, and Her2/neu expression by immunohistochemistry. Results: ER and PR had no significant expression in GBC and control group, but Her2/neu had 16% expression in GBC, significantly associated with the degree of differentiation with 62.5% (n-5) being well-differentiated; 75% of Her2/neu positive were in stages III and IV. Her2/neu did not correlate with tumor markers despite expression. Conclusions: Her2/neu amplification is a small step in validating that option so it could be included in the treatment and prognostication of GBC.

Enterolith Causing Small Bowel Obstruction: Report of a Case and Review of Literature.

Enterolithiasis, also known as gastro-intestinal concretions, is an uncommon medical disorder that arises from intestinal stasis. Enteroliths are commonly caused by tuberculosis-related constriction and arise from intestinal diverticula. Small bowel obstruction caused by an enterolith is extremely uncommon and might be difficult to diagnose. The mortality rate of uncomplicated enterolithiasis is relatively low, but it rises to 3% in patients who have background comorbid illness, have significant bowel obstruction, and are diagnosed late. We present a rare case of an uncomplicated partial intestinal obstruction caused by an enterolith in an elderly male patient with small bowel diverticular disease who was treated nonoperatively and did not develop further symptoms in the six-month follow-up and discuss the difficulty in diagnosis and its management.

Adult Left Colocolic Intussusception Successfully Managed by Left Hemicolectomy and Primary Anastomosis.

Intussusception, although quite common in children with the classic triad of cramping abdominal pain, bloody diarrhea, and palpable masses, is a rare cause of acute abdomen with myriad presentations in adults. It is defined as the telescoping of a proximal segment of the gastrointestinal (GI) tract, called the intussusceptum, into the lumen of the adjacent distal segment of the GI tract, called intussuscipiens. Due to its different manifestations and time course, adult colonic intussusception often poses a diagnostic challenge for emergency doctors. The treatment of colonic intussusception in adults typically involves surgery, often with bowel resection and anastomosis followed by a defunctioning loop ileostomy. We report a case of left-sided colocolic intussusception secondary to a tubular adenoma as the lead point, which was successfully treated by resection and primary anastomosis. The pathological diagnosis of the lesion was reported as adenocarcinoma and resected bowel margins were found free of the tumor.

Characterization of microRNA genes from Pigeonpea (Cajanus cajan L.) and understanding their involvement in drought stress.

MicroRNAs (miRNA) are non-coding 20-24 nucleotide long RNAs regulating gene expression. In this study, we have characterized and analysed expression of miRNAs in Pigeonpea by using bioinformatics and experimental tools. We identified 116 miRNAs belonging to 32 phylogenetic families. Further, transcription start sites of miRNA genes revealed abundance and unique arrangement of adenine at +1 and thymine at -1 position. Promoter analysis exhibited presence of 19 most prevalent motifs which comprises majorly of TATA box and MYC domains. In total, 252 miRNA-targets were identified and found to be involved in various developmental processes and stress responses. Moreover, genome-wide localization studies demonstrated clustering of cca-miRNA 395 and 169 genes. The tandem and segmental duplication events were observed suggesting miRNA genes have been originated parallelly with protein coding genes. The expression analysis revealed induction of cca-miR169a, 398a and 408 miRNAs under drought stress highlighting their involvement. Conversely, down-regulation of their putative targets (NFYA, SOD, and UCLA, respectively) confirmed regulatory role of miRNAs in their expression emphasising the negative relationship between these miRNAs and targets in Pigeonpea. This study reports vast repertoire of miRNA genes which further can be experimentally characterized to elucidate their functions in various biological processes and can be recommended for Pigeonpea improvement programs.