Decoding LY6G6D in colorectal cancer: Unraveling biomarker potential and therapeutic insights

Colorectal cancer (CRC) poses a significant global health challenge with high morbidity and mortality rates. This study investigates the role of LY6G6D, a member of the LY6/uPAR superfamily, in CRC. Employing a bioinformatic approach, we analyzed LY6G6D expression across different cancer types, compared it with known oncogenes in CRC, explored the involved genomic alterations, and assessed associated clinicopathological characteristics. LY6G6D exhibited aberrant expression, particularly elevated in CRC adenocarcinoma and highly specific to tumor tissues when compared with other oncogenes, despite its comparatively low frequency of genomic alteration. Subsequently, tumor immune infiltration analysis revealed distinct associations, primarily indicating a negative correlation, suggesting immune down-regulation. Survival analysis in context of LY6G6D was conducted with Kaplan-Meier (KM) curves, indicating a 10% risk of disease recurrence in the case of elevated expression. Additionally, we constructed a 3D protein model of LY6G6D through ab-inito approach. The protein model was validated, followed by conservation analysis and active site identification. Active site identification of LY6G6D's final predicted model revealed some similar sites that were estimated to be conserved. Target-guided drug molecules were collected and molecular docking was executed, proposing Cardigin (Digitoxin) and Manzamine A as potential therapeutic candidates. In conclusion, LY6G6D emerges as a significant biomarker for diagnostic and therapeutic applications in CRC, highlighting its multifaceted role in tumorigenesis. The proposed drugs present avenues for further investigations.

Expanding global health opportunities for UK-based interventional radiology trainees

AIMS

As the future workload of interventional radiologists in the UK continues to expand, it is imperative that current IR trainees are given maximal opportunities to expand their skill sets. This paper argues that opportunities for involvement in international collaborative fieldwork should be expanded for interventional radiology trainees in the UK, as a means of maximising their future competency and positive contribution to the advancement of global healthcare. The study builds upon first-hand experience of the authors in the field and a review of the relevant literature.

MATERIALS AND METHODS

This scoping review aimed to ascertain the current global health opportunities for interventional radiology trainees primarily in Resource Limited Countries (RLCs). This review further contrasted these opportunities with ones provided to trainees within North America and European countries.

RESULTS

This review found that the opportunities for international collaborative fieldwork for UK interventional radiology trainees are sparse. The availability of such opportunities in the US is significantly greater as is the awareness and appreciation of the benefits of such international collaborations for trainees. Benefits include greater experience with a variety of pathologies, a potentially larger volume of workload, improved cultural competency and proficiency and greater cost-conscious and more sustainable practices. It is also pertinent that any future global partnership opportunities for UK clinicians are crafted with care to benefit both UK and international healthcare professionals, institutions and patients within RLCs.

CONCLUSION

Significant work is needed to expand opportunities for global health for interventional radiology trainees in the UK. It is incumbent upon the major radiology societies and educational bodies within the UK to expand upon such opportunities to develop a robust, world-leading workforce, which would subsequently enhance our global health positionality and reflexivity.

Predicting Success: A Comprehensive Analysis of High School and Admission Test Scores on Future Academic Performance of Dental Students

Introduction Dental school admissions in Pakistan traditionally rely on Higher Secondary School Certificate (HSSC), University of Health Sciences (UHS), and National Testing Service (NTS) scores, with limited research available on their predictive validity for dental school performance. This study aims to investigate the correlation between a student's first-year dental school performance and their HSSC, UHS, and NTS scores. Methods A total of 282 records, spanning the years 2016 to 2020, were obtained from a single private dental institution. The data included HSSC, UHS, and/or NTS scores, with the first professional examination results as the dependent variable. Statistical analysis was conducted using the Statistical Package for the Social Sciences (IBM SPSS Statistics for Windows, IBM Corp., Version 25.0, Armonk, NY), encompassing descriptive statistics, Pearson's correlation coefficients, and multiple regression analysis. Results Pearson's coefficients revealed weak to moderate positive correlations between the first professional examination and HSSC (r=0.209, p<.01), UHS (r=0.344, p<.01), and NTS (r=0.350, p<.01), all statistically significant at p < 0.01. Multiple regression analysis indicated that UHS scores contributed the highest explanatory power (R² = 0.146) in predicting first professional examination results. Conclusion A positive correlation between HSSC, UHS, and NTS scores with dental students' performance in the first professional examination is observed. However, the correlations are moderate, highlighting the importance of incorporating assessments that consider cognitive, behavioral, and skill-related aspects in admissions processes. Given the evolving landscape of dental education, these findings underscore the need for a holistic approach to identify candidates better equipped to serve the healthcare sector.

Transition from fractal-dendritic to compact islands for the 2D-ferroelectric SnSe on graphene/Ir(111)

Epitaxial growth is a versatile method to prepare two-dimensional van der Waals ferroelectrics like group IV monochalcogenides which have potential for novel electronic devices and sensors. We systematically study SnSe monolayer islands grown by molecular beam epitaxy, especially the effect of annealing temperature on shape and morphology of the edges. Characterization of the samples by scanning tunneling microscopy reveals that the shape of the islands changes from fractal-dendritic after deposition at room temperature to a compact rhombic shape through annealing, but ripening processes are absent up to the desorption temperature. A two-step growth process leads to large, epitaxially aligned rhombic islands bounded by well-defined110-edges (armchair-like), which we claim to be the equilibrium shape of the stoichiometric SnSe monolayer islands. The relaxation of the energetically favorable edges is detected in atomically resolved STM images. The experimental findings are supported by the results of our first-principles calculations, which provide insights into the energetics of the edges, their reconstructions, and yields the equilibrium shapes of the islands which are in good agreement with the experiment.

Synthesis and characterization of bis-amide SSE1917 as a microtubule-stabilizing anticancer agent

Microtubule dynamics are critical for spindle assembly and chromosome segregation during cell division. Pharmacological inhibition of microtubule dynamics in cells causes prolonged mitotic arrest, resulting in apoptosis, an approach extensively employed in treating different types of cancers. The present study reports the synthesis of thirty-two novel bis-amides (SSE1901-SSE1932) and the evaluation of their antiproliferative activities. N-(1-oxo-3-phenyl-1-(phenylamino)propan-2-yl)benzamide (SSE1917) exhibited the most potent activity with GI50 values of 0.331 ± 0.01 µM in HCT116 colorectal and 0.48 ± 0.27 µM in BT-549 breast cancer cells. SSE1917 stabilized microtubules in biochemical and cellular assays, bound to taxol site in docking studies, and caused aberrant mitosis and G2/M arrest in cells. Prolonged treatment of cells with the compound increased p53 expression and triggered apoptotic cell death. Furthermore, SSE1917 suppressed the growth of both mouse and patient-derived human colon cancer organoids, highlighting its potential therapeutic value as an anticancer agent.

Genomic characterization of Puccinia triticina using molecular marker technology

Abstract Leaf rust, caused by Puccinia triticina, is the most common rust disease of wheat. The fungus is an obligate parasite capable of producing infectious urediniospores. To study the genetic structure of the leaf rust population 20 RAPD primers were evaluated on 15 isolates samples collected in Pakistan. A total of 105 RAPD fragments were amplified with an average of 7 fragments per primer. The number of amplified fragments varied from 1 to 12. GL Decamer L-07 and GL Decamer L-01 amplified the highest number of bands (twelve) and primer GL Decamer A-03 amplified the lowest number of bands i.e one. Results showed that almost all investigated isolates were genetically different that confirms high genetic diversity within the leaf rust population. Rust spores can follow the migration pattern in short and long distances to neighbor areas. Results indicated that the greatest variability was revealed by 74.9% of genetic differentiation within leaf rust populations. These results suggested that each population was not completely identical and high gene flow has occurred among the leaf rust population of different areas. The highest differentiation and genetic distance among the Pakistani leaf rust populations were detected between the leaf rust population in NARC isolate (NARC-4) and AARI-11and the highest similarity was observed between NARC isolates (NARC-4) and (NARC-5). The present study showed the leaf rust population in Pakistan is highly dynamic and variable.

A Rare Case of Embryonal Rhabdomyosarcoma of Pineal Gland in An Adult Male

Introduction/Objective

Rhabdomyosarcoma (RMS), mesenchymal derived tumor, is predominantly diagnosed in the pediatric population but may present at any age. Less than 1% of all adult solid malignant cancers are sarcomas, and rhabdomyosarcoma comprises &lt;0.001% of adult sarcomas. Primary intracranial RMS is rare and has been reported in the cerebrum, cerebellum, brainstem, and the meninges. The occurrence of a primary intracranial RMS arising from the pineal gland is exceedingly rare.

Methods/Case Report

An adult male presented to the ED with complaint of several months of headaches, progressive confusion, forgetfulness and most recently difficulty in finding words. CT scan showed a large mass arising from the pineal gland causing obstructive hydrocephalus. Subsequently, the patient underwent excisional biopsy. The histopathology examination revealed small round basophilic cells and large polygonal cells with large eccentric nuclei and prominent nucleoli, abundant eosinophilic cytoplasm containing globular paranuclear eosinophilic inclusions, characteristic of rhabdoid cells. Immunohistochemical (IHC) showed tumor cells are positive for Desmin, MyoD1, CK8/18, INI1 (hSNF5; SMARCB1) with retained nuclear expression and faint positivity for Synaptophysin and focally positivity for Neurofilament. The tumor cells showed negative staining for Pankeratin, SOX10, Oct4, SALL4, INSM1, LCA AND CD30, which excluded the possibility of Germ cell tumor and Pineoblastoma. The case was finalized as primary malignant neoplasm, consistent with Embryonal Rhabdomyosarcoma of pineal gland.

Results (if a Case Study enter NA)

NA

Conclusion

This case highlights the rare occurrence of rhabdomyosarcoma originating from the pineal gland in an adult male. Morphologic and immunohistochemical findings were consistent with embryonal rhabdomyosarcoma. Since primary rhabdomyosarcoma of the pineal gland is rare, this case contributes to the limited body of literature on such cases. It underscores the importance of considering unusual entities in intracranial tumors. The distinct morphology and the use of IHC aids in diagnosing this rare entity.

Dietary Alcohol Consumption Elicits Corneal Toxicity Through the Generation of Cellular Oxidative Stress

Purpose: Clinical data suggest that alcohol use is associated with the development of signs and symptoms of dry eye disease. However, preclinical data investigating ocular toxicity after dietary alcohol consumption are lacking. In this study, we investigated the effects of alcohol on the ocular surface, in human corneal epithelial cells (HCE-T) in vitro and in C57BL/6JRj mice in vivo. Methods: HCE-T were exposed to clinically relevant doses of ethanol. To determine the effects of dietary alcohol consumption in vivo, wild-type mice were administered the Lieber-DeCarli liquid diet (5% vol/vol ethanol or isocaloric control) for 10 days ad libitum. Corneal fluorescein staining was performed to assess ocular surface damage. Histopathological and gene expression studies were performed on cornea and lacrimal gland tissue. Results: Sublethal doses of ethanol (0.01%-0.5%) resulted in a dose-dependent increase of cellular oxidative stress in corneal epithelial cells and a significant increase in NFE2L2 and downstream antioxidant gene expression, as well as an increase in NFκB signaling; short-term exposure (0.5%, 4 h) triggered significant corneal epithelial cell barrier breakdown. Exposure to the alcohol-containing diet caused a 3-fold increase in corneal fluorescein staining, with no effect on tear volumes. Corneal thickness was significantly reduced in the alcohol diet group, and corneal tissue revealed dysregulated antioxidant and NFκB signaling. Our data provide the first published evidence that alcohol exposure causes ocular toxicity in mice. Conclusions: Our results are consistent with clinical studies linking past alcohol consumption to signs of ocular surface disease.

Anticancer genes (NOXA, PAR-4, TRAIL) are de-regulated in breast cancer patients and can be targeted by using a ribosomal inactivating plant protein (riproximin)

BACKGROUND

Anticancer genes are an endogenous defense against transformed cells as they impose antineoplastic effects upon ectopic expression. Profiling the expression of these genes is fundamental for exploring their prognostic and therapeutic relevance in cancers. Natural compounds can upregulate anticancer genes in malignant cells and thus be useful for therapeutic purposes. In this study, we identified the expression levels of anticancer genes in breast cancer clinical isolates. In addition, the purified and sequenced plant protein (riproximin) was evaluated for its potential to induce anticancer genes in two breast cancer cell lines.

METHODOLOGY

Expression profiles of three anticancer genes (NOXA, PAR-4, TRAIL) were identified by immunohistochemistry in 45 breast cancer clinical isolates. Breast cancer cells were exposed to riproximin and expression of the anticancer genes was determined by microarray, real-time PCR and western blot methodologies. Lastly, a bioinformatic approach was adopted to highlight the molecular/functional significance of the anticancer genes.

RESULTS

NOXA expression was evenly de-regulated among the clinical isolates, while PAR-4 was significantly down-regulated in majority of the breast cancer tissues. In contrast, TRAIL expression was increased in most of the clinical samples. Expression levels of the anticancer genes followed a distinct trend in accordance with the disease severity. Riproximin showed a substantial potential of inducing expression of the anticancer genes in breast cancer cells at transcriptomic and protein levels. The bioinformatic approach revealed involvement of anticancer genes in multiple cellular functions and signaling cascades.

CONCLUSION

Anticancer genes were de-regulated and showed discrete expression patterns in breast cancer patient samples. Riproximin effectively induced the expression of selected anticancer genes in breast cancer cells.

Caffeine: benefits and drawbacks for technical performance

Surgical and minimally-invasive procedures, including cardiac and radiological, have high-stake patient outcomes. Working pressures, altering shift rotas, and ever-increasing demands have led to worsening sleep patterns for surgeons and allied professionals. Sleep deprivation alone has harmful consequences in relation to clinical outcomes and the physical and mental health of the surgeon, and to offset fatigue, some surgeons use legal stimulants such as caffeine and energy drinks. This stimulant use, however, may come at the cost of negative effects on cognitive and physical function. We aimed to explore evidence behind the use of caffeine, and its consequences on technical performance and clinical outcomes.

What inhibits the progress of early-career women in Karachi? Studying the effects of socio-spatial mobility barriers on women's employment

BACKGROUND

There is a widespread acceptance and shift towards sustainable, inclusive and smart mobility solutions around the world. However, in Karachi, poorly coordinated urban planning, lack of effective governance structure and investment in transport, has allowed the growth of an almost unregulated and ungovernable informal transport sector. Women are more severely affected by the poor service since men not only have more space allocated to them on public transport but also have the freedom to use alternative and cheaper private vehicles such as motorbikes and cycles. Poor representation of women in the transport sector further aggravates the situation.

OBJECTIVE

The paper aims to highlight the gender-disaggregated effects of poor transport design, provision and lack of personal agency on mobility, for emphasising the social and cultural attitudes faced by female employees. It argues that not integrating the gender-based disadvantages faced by women into planning, reinforces their disadvantaged position and force them to take complex trips.

METHODS

Scenario-based questions were designed for focus group discussion which covered not only the everyday mobility challenges but also their reactions to the potential solutions. For a gender-based comparative analysis, two separate focus group discussions were organised.

RESULTS

Adopting a sector-based mapping approach of the issues discussed in the groups helped understand the complexity of female user experience at various levels, starting from planning or discussing the trips with families, to making modal choices. It also helped to tease out the impact of these issues on their employment opportunities as early-career women.

CONCLUSION

The model proposed in this paper can help illustrate where changes can be made in the system considering the social aspects of transport.

Expression profiling of anticancer genes in colorectal cancer patients and their in vitro induction by riproximin, a ribosomal inactivating plant protein

BACKGROUND

Ectopic expression of anticancer genes (ACGs) imposes antineoplastic effects on transformed cells. Clinically, reduced expression of these genes has been linked with poor prognosis, metastasis and chemo/radiotherapy resistance in cancers. Identifying expression pattern of ACGs is crucial to establish their prognostic and therapeutic relevance in colorectal cancer (CRC). In addition to the clinical perspective, naturally occurring compounds can be explored in parallel for inducing ACGs to achieve cancer cell-specific death.

METHODOLOGY

Expression profiles of three ACGs (NOXA, PAR-4, TRAIL) were identified via real-time PCR in CRC clinical isolates. Time lapse-based expression modifications in ACGs were studied in a CRC liver metastasis animal model using microarray methodology. Effects of a purified plant protein (riproximin) on selected ACGs were identified in three primary and metastatic CRC cell lines by real-time PCR. Lastly, importance of the ACGs in a cellular environment was highlighted via bioinformatic analysis.

RESULTS

ACGs (except NOXA) were persistently downregulated in clinical isolates when comparing the overall mean expression values with normal mucosa levels. In vivo studies showed a prominent inhibition of NOXA and PAR-4 genes in implanted CRC cells during rat liver colonization. TRAIL showed deviation from this theme while showing marked induction during the early period of liver colonization (days 3 and 6 after CRC cell implantation). Riproximin exhibited substantial potential of inducing ACGs at transcriptome levels in selected CRC cell lines. Bioinformatic analysis showed that vital molecular/functional aspects of a cell are associated with the presence of ACGs.

CONCLUSION

ACGs are downregulated in primary and metastatic phase of CRC. Riproximin effectively induces ACGs in CRC cells and can be exploited for clinical investigations over time.

Effect of Electronic Health Record Clinical Decision Support on Contextualization of Care: A Randomized Clinical Trial

IMPORTANCE

Contextualizing care is a process of incorporating information about the life circumstances and behavior of individual patients, termed contextual factors, into their plan of care. In 4 steps, clinicians recognize clues (termed contextual red flags), clinicians ask about them (probe for context), patients disclose contextual factors, and clinicians adapt care accordingly. The process is associated with a desired outcome resolution of the presenting contextual red flag.

OBJECTIVE

To determine whether contextualized clinical decision support (CDS) tools in the electronic health record (EHR) improve clinician contextual probing, attention to contextual factors in care planning, and the presentation of contextual red flags.

DESIGN, SETTING, AND PARTICIPANTS

This randomized clinical trial was performed at the primary care clinics of 2 academic medical centers with different EHR systems. Participants were adults 18 years or older consenting to audio record their visits and their physicians between September 6, 2018, and March 4, 2021. Patients were randomized to an intervention or a control group. Analyses were performed on an intention-to-treat basis.

INTERVENTIONS

Patients completed a previsit questionnaire that elicited contextual red flags and factors and appeared in the clinician's note template in a contextual care box. The EHR also culled red flags from the medical record, included them in the contextual care box, used passive and interruptive alerts, and proposed relevant orders.

MAIN OUTCOMES AND MEASURES

Proportion of contextual red flags noted at the index visit that resolved 6 months later (primary outcome), proportion of red flags probed (secondary outcome), and proportion of contextual factors addressed in the care plan by clinicians (secondary outcome), adjusted for study site and for multiple red flags and factors within a visit.

RESULTS

Four hundred fifty-two patients (291 women [65.1%]; mean [SD] age, 55.6 [15.1] years) completed encounters with 39 clinicians (23 women [59.0%]). Contextual red flags were not more likely to resolve in the intervention vs control group (adjusted odds ratio [aOR], 0.96 [95% CI, 0.57-1.63]). However, the intervention increased both contextual probing (aOR, 2.12 [95% CI, 1.14-3.93]) and contextualization of the care plan (aOR, 2.67 [95% CI, 1.32-5.41]), controlling for whether a factor was identified by probing or otherwise. Across study groups, contextualized care plans were more likely than noncontextualized plans to result in improvement in the presenting red flag (aOR, 2.13 [95% CI, 1.38-3.28]).

CONCLUSIONS AND RELEVANCE

This randomized clinical trial found that contextualized CDS did not improve patients' outcomes but did increase contextualization of their care, suggesting that use of this technology could ultimately help improve outcomes.

TRIAL REGISTRATION

ClinicalTrials.gov Identifier: NCT03244033.

Comparison of Sphenopalatine Block and Intravenous Paracetamol for the Treatment of Post-Dural Puncture Headache

Objective: To compare the effect of topical sphenopalatine block and intra venous Paracetamol in the management of post-Dural puncture headache. Study Design: Quasi-experimental study. Place and Duration of Study: Combined Military Hospital Peshawar Pakistan, from Jan to Aug 2021. Methodology: This experimental study was conducted on 153 patients who underwent lumbar puncture for any procedure and then suffered from post-Dural puncture headaches. Patients were randomized into two groups. Group A received the topical sphenopalatine block, while group B received the intravenous Paracetamol three doses 12 hours apart. Headache was recorded on Numeric pain score (NPS) 24 hours after the surgical procedure. Comparison in pain relief was compared in both groups at 1 hour, 12 hours, 24 hours and 48 hours. Results: Out of 153 patients randomized into two groups, 76 (49.7%) were categorized into Group-A, and 77 (50.3%) were categorized into Group-B. 63 (41.2%) were male, while 90 (58.8%) were female. The mean age of patients included in our study was 34.34 ± 4.33 years. Gynaecological/obstetric procedures 70 (45.7%) were the most common indication for lumbar puncture in our study. At 1, 12, 24 and 48 hours, pain relief was statistically significantly better in Group-A than in Group-B (p- value<0.005). Conclusion: Sphenopalatine ganglionic block emerged as a better option for pain relief among patients suffering from post-Dural puncture headache than intravenous Paracetamol. In addition, immediate and short-term relief was better among patients who used sphenopalatine block.

A Rare Presentation Of Synovial Sarcoma

A 36 years old male, presented to the Department of Oral and Maxillofacial Surgery of Abbasi Shaheed Hospital, Karachi, Pakistan, on 7th February 2020 with the complaint of swelling on the left side of the face for more than 1 year.The swelling was 7 x 7 cm in size, intact and palpable, starting from the Zygomatic arch and extending to the lower border of the mandible. The swelling was firm, non-tender, non-fluctuant, non-pulsatile, well localized, well-defined margin, and overlying skin appear normal, with any other complaint of pain, burning sensation, or paresthesia. The intraoral examination revealed occlusion intact, poor oral hygiene, dentate, normal oral mucosa with non-significant bony contour. Mouth opening 40 mm. No deviation of the mandible on opening and closing.

Recent advances and challenges in 2D/2D heterojunction photocatalysts for solar fuels applications

Although photocatalytic technology has emerged as an effective means of alleviating the projected future fuel crisis by converting sunlight directly into chemical energy, no visible-light-driven, low-cost, and highly stable photocatalyst has been developed to date. Due to considerably higher interfacial contact with numerous reactive sites, effective charge transmission and separation ability, and strong redox potentials, the focus has now shifted to 2D/2D heterojunction systems, which have exhibited effective photocatalytic performance. The fundamentals of 2D/2D photocatalysis for different applications and the classification of 2D/2D materials are first explained in this paper, followed by strategies to improve the photocatalytic performance of various 2D/2D heterojunction systems. Following that, current breakthroughs in 2D/2D metal-based and metal-free heterojunction photocatalysts, as well as their applications for H₂ evolution via water splitting, CO₂ reduction, and N₂ fixation, are discussed. Finally, a brief overview of current constraints and predicted results for 2D/2D heterojunction systems is also presented. This paper lays out a strategy for developing efficient 2D/2D heterojunction photocatalysts and sophisticated technology for solar fuel applications in order to address the energy issue.

Comparison of Dexmedetomidine and Fentanyl for Blunting Hemodynamic Response to Intubation

Objective: To compare the effects of Dexmedetomidine and Fentanyl on the blunting of the hemodynamic response to intubation. Study Design: Comparative cross-sectional study. Place and Duration of Study: Combined Military Hospital Peshawar Pakistan, from Jan to Aug 2021. Methodology: This study was conducted on 908 patients who were ASA grades I and II and underwent general anaesthesia for any surgical procedure. Group-A received Dexmedetomidine, while Group-B received Fentanyl and routine preanaesthetic medications. Hemodynamic responses in both groups were recorded and compared in heart rate and mean arterial pressure at baseline, 2, 5, and 10 minutes after the intubation. Results: Out of 908 patients equally divided into two groups, 579 (63.7%) were males, while 329 (36.3%) were females. The mean age of patients included in our study was 33.445 6.363 years. A significant increase in heart rate was found at 2, 5 and 10 minutes in the group who took Fentanyl compared to the group who took Dexmedetomidine (p-value 0.001).  ignificant increases in mean arterial pressure were found at 2 and 5 minutes (p-value 0.019 and 0.007, respectively) in the Fentanylgroup, while no significant difference was found at 10 minutes in either group (p-value 0.914). Conclusion: In this study, Dexmedetomidine was found to be a better agent in providing hemodynamic stability during and after the process of intubation compared to Fentanyl.

Topical Porphyrin Antioxidant Protects Against Ocular Surface Pathology in a Novel Rabbit Model for Particulate Matter-Induced Dry Eye Disease

Purpose: Particulate matter (PM) is a primary cause for the development of acute and chronic dry eye disease, especially irritant-induced conjunctivitis. The purpose of the present study was to determine the effects of fine atmospheric PM on the rabbit ocular surface, and determine the protective effects of a synthetic antioxidant, manganese(III) tetrakis(1-methyl-4-pyridyl) porphyrin (Mn-TM-2-PyP), in vitro and in vivo. Methods: Rabbit corneal epithelial cells (SIRC) were exposed to increasing concentrations of PM to determine the effects on cell motility and viability. The in vivo effects of topically instilled PM were tested in New Zealand White rabbits. Comprehensive ophthalmic exams and corneal fluorescein staining were performed. Results: Exposure to PM resulted in dose-dependent cell death and impaired cellular motility; Mn-TM-2-PyP protected against PM-induced cytotoxicity and significantly increased SIRC cell motility. In vivo, exposure to PM (5 mg/ml, topical, 3 times daily for 7 days) resulted in signs of dry eye, notably hyperemia, increased corneal fluorescein staining, and decreased tear volumes. Mn-TM-2-PyP significantly improved hyperemia and corneal fluorescein readouts but had no effect on tear production. Lifitegrast (Xiidra^®) showed similar pharmacologic efficacy to Mn-TM-2-PyP. Conclusion: Overall, these data provide evidence that PM induces phenotypes of ocular surface disease responsive to antioxidant and immunosuppressant therapy. To our knowledge this is the first report of a large animal model to study PM-induced ocular surface disease. The present work provides standardized experimental paradigms for the comprehensive in vitro and in vivo testing of novel therapeutic approaches targeting PM-induced conjunctivitis and dry-eye.

Applications of graphene-based electrochemical and optical biosensors in early detection of cancer biomarkers

Graphene is a one-atom-thick carbon compound, which holds promises for detecting cancer biomarkers along with its derivatives. The atom-wide graphene layer is ideal for cancer biomarker detection due to its unique physicochemical properties like increased electrical and thermal conductivity, optical transparency, and enhanced chemical and mechanical strength. The scientific aim of any biosensor is to create a smaller and portable point of care device for easy and early cancer detection; graphene is able to live up to that. Apart from tumour detection, graphene-based biosensors can diagnose many diseases, their biomarkers, and pathogens. Many existing remarkable pieces of research have proven the candidacy of nanoparticles in most cancer biomarkers detection. This article discusses the effectiveness of graphene-based biosensors in different cancer biomarker detection. This article provides a detailed review of graphene and its derivatives that can be used to detect cancer biomarkers with high specificity, sensitivity, and selectivity. We have highlighted the synthesis procedures of graphene and its products and also discussed their significant properties. Furthermore, we provided a detailed overview of the recent studies on cancer biomarker detection using graphene-based biosensors. The different paths to create and modify graphene surfaces for sensory applications have also been highlighted in each section. Finally, we concluded the review by discussing the existing challenges of these biosensors and also highlighted the steps that can be taken to overcome them.

Pleomorphic Adenoma of Minor Salivary Gland

Pleomorphic adenoma is a benign tumor of salivary glands, arising from minor salivary glands, is very rare and presents with a minor female predilection; and the highest occurrence is between the fourth and sixth decades of life. It is of glandular origin, usually presenting as a slowly growing, painless, firm swelling that does not cause ulceration of the overlying mucosa. In this case, a 27-year male presented with swelling on buccal mucosa for three years. The swelling was firm and well circumscribed. Excisional biopsy was done under general anesthesia and the mass was excised. The histopathological evaluation revealed pleomorphic adenoma. This case highlights the need to keep this entity in the differential diagnosis of intra-oral indolent swellings of some duration. Key Words: Pleomorphic adenoma, Buccal mucosa, Minor salivary glands.

A Rare Case of Recurrent Arterial Thrombosis Secondary to Iron Deficiency Anemia

Iron deficiency anemia is the leading cause of anemia all over the world. Iron deficiency is known to cause reactive thrombocytosis. However, arterial thrombosis secondary to reactive thrombocytosis is a rare entity. In this article, we present a case of a 37-year-old female with recurrent arterial thrombosis due to severe thrombocytosis caused by iron deficiency anemia. The patient developed spleen and kidney infractions, as well as abdominal aortic thrombosis. She was subsequently treated with iron and aspirin with an improvement of the anemia and thrombocytosis, with no further thrombotic complications. Arterial thrombosis is a very serious condition as the thrombus can embolize to carotid arteries leading to stroke or to peripheral blood vessels causing peripheral ischemia and gangrene. Iron deficiency anemia is a reversible cause of thrombocytosis that can be treated very easily to avoid thrombotic complications.