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1.
Curr Neurovasc Res ; 2024 Aug 30.
Article in English | MEDLINE | ID: mdl-39219420

ABSTRACT

Multiple sclerosis [MS] is a progressive autoimmune condition that primarily affects young people and is characterized by demyelination and neurodegeneration of the central nervous system [CNS]. This in-depth review explores the complex involvement of oligodendrocytes, the primary myelin- producing cells in the CNS, in the pathophysiology of MS. It discusses the biochemical processes and signalling pathways required for oligodendrocytes to function and remain alive, as well as how they might fail and cause demyelination to occur. We investigate developing therapeutic options that target remyelination, a fundamental component of MS treatment. Remyelination approaches promote the survival and differentiation of oligodendrocyte precursor cells [OPCs], restoring myelin sheaths. This improves nerve fibre function and may prevent MS from worsening. We examine crucial parameters influencing remyelination success, such as OPC density, ageing, and signalling pathway regulation [e.g., Retinoid X receptor, LINGO-1, Notch]. The review also examines existing neuroprotective and antiinflammatory medications being studied to see if they can assist oligodendrocytes in surviving and reducing the severity of MS symptoms. The review focuses on medicines that target the myelin metabolism in oligodendrocytes. Altering oligodendrocyte metabolism has been linked to reversing demyelination and improving MS patient outcomes through various mechanisms. We also explore potential breakthroughs, including innovative antisense technologies, deep brain stimulation, and the impact of gut health and exercise on MS development. The article discusses the possibility of personalized medicine in MS therapy, emphasizing the importance of specific medicines based on individual molecular profiles. The study emphasizes the need for reliable biomarkers and improved imaging tools for monitoring disease progression and therapy response. Finally, this review focuses on the importance of oligodendrocytes in MS and the potential for remyelination therapy. It also underlines the importance of continued research to develop more effective treatment regimens, taking into account the complexities of MS pathology and the different factors that influence disease progression and treatment.

2.
Indian J Ophthalmol ; 2024 Sep 10.
Article in English | MEDLINE | ID: mdl-39257102

ABSTRACT

PURPOSE: To report the long-term anatomical and functional results of lens-sparing vitrectomy (LSV) for stage 4 retinopathy of prematurity (ROP). DESIGN: Retrospective study. METHODS: This is a study of 23 eyes of 16 patients with stage 4 ROP who underwent lens-sparing vitrectomy at a tertiary care center and had a minimum of 2 years of follow-up. The main outcome measures are the retinal status and visual outcome at the final follow-up. RESULTS: After a mean follow-up of 7.36 years, the lenses remained clear in 69.57%; anatomical success in terms of the attached retina was achieved in 19/23 eyes (82.61%) and vision of ≥6/24 was achieved in 8/23 eyes (34.78%), whereas navigational vision (≥1/60) was achieved in 16/23 (69.56%). The mean spherical equivalent was -8.50 + 6.39 diopters. High myopia (≥7 dsph) was noted in 43.47% of patients. The severity of myopia was not related to previous lasers and was less severe in eyes with posterior pole residual folds compared to normalized fundus or eyes with macular drag but no fold. At the final follow-up, 3/16 (18.75%) patients had bilateral blindness due to total retinal detachments and 11/16 (68.75%) had recorded functional vision in one or both eyes, whereas two others could potentially be having vision but could not be evaluated. CONCLUSIONS: The long-term results of lens-sparing vitrectomy for stage 4 ROP are favorable with a majority retaining clear lenses and attached retina and two-thirds having functional vision.

3.
Eur J Drug Metab Pharmacokinet ; 49(5): 631-644, 2024 Sep.
Article in English | MEDLINE | ID: mdl-39105991

ABSTRACT

BACKGROUND AND OBJECTIVES: Numerous clinical concerns have been expressed regarding the potential worsening of cyclin-dependent kinase 4/6 inhibitor effects in breast cancer patients because of co-administration of proton pump inhibitors. Hence, this study evaluated the effects of proton pump inhibitors on the pharmacokinetics of palbociclib and ribociclib in terms of  cytochrome P450 (CYP) 3A4 and P-glycoprotein involvement. METHODS: The effects of omeprazole and rabeprazole on drug metabolism and efflux of these drugs were investigated using molecular docking, metabolic stability assay in rat liver microsomes, human recombinant CYP3A4 (rCYP3A4) enzymes, and Caco-2 cell monolayers, and in vivo pharmacokinetics with omeprazole and rabeprazole in (5 and 10 mg/kg) 30 min and 7 days before orally dosing palbociclib and ribociclib (10 mg/kg). RESULTS: Omeprazole and rabeprazole inhibited CYP3A4 enzyme activity in rCYP3A4 baculosomes with a 50-60% inhibition at 30 µM. Additionally, both omeprazole and rabeprazole (10 µm) significantly reduced the P-glycoprotein-mediated drug efflux of palbociclib and ribociclib. The 7-day pretreatment of omeprazole at a dose of 10 mg/kg resulted in 24% and 26% reductions in palbociclib's mean maximum plasma concentration) Cmax and area under the plasma concentration-time curve (AUC0-24 h), respectively. Palbociclib's pharmacokinetics were not significantly altered by the pretreatment with rabeprazole; however, ribociclib pharmacokinetics exhibited an 83.94% increase in AUC0-24 h. CONCLUSION: The findings indicate that long-term treatment with therapeutic doses of both omeprazole and rabeprazole can alter the pharmacokinetics of palbociclib and ribociclib. The co-administration of rabeprazole may alter the pharmacokinetics of palbociclib and ribociclib via CYP enzyme and P-glycoprotein inhibition.


Subject(s)
Aminopyridines , Cyclin-Dependent Kinase 4 , Cyclin-Dependent Kinase 6 , Cytochrome P-450 CYP3A , Drug Interactions , Microsomes, Liver , Omeprazole , Piperazines , Proton Pump Inhibitors , Purines , Pyridines , Rabeprazole , Animals , Proton Pump Inhibitors/pharmacology , Proton Pump Inhibitors/administration & dosage , Proton Pump Inhibitors/pharmacokinetics , Piperazines/pharmacokinetics , Piperazines/pharmacology , Piperazines/administration & dosage , Humans , Purines/pharmacokinetics , Purines/pharmacology , Rats , Pyridines/pharmacokinetics , Pyridines/pharmacology , Pyridines/administration & dosage , Rabeprazole/pharmacology , Rabeprazole/administration & dosage , Rabeprazole/pharmacokinetics , Cytochrome P-450 CYP3A/metabolism , Omeprazole/pharmacology , Omeprazole/pharmacokinetics , Omeprazole/administration & dosage , Male , Caco-2 Cells , Aminopyridines/pharmacokinetics , Aminopyridines/pharmacology , Aminopyridines/administration & dosage , Microsomes, Liver/metabolism , Microsomes, Liver/drug effects , Cyclin-Dependent Kinase 4/antagonists & inhibitors , Cyclin-Dependent Kinase 6/antagonists & inhibitors , Rats, Sprague-Dawley , Protein Kinase Inhibitors/pharmacokinetics , Protein Kinase Inhibitors/pharmacology , Protein Kinase Inhibitors/administration & dosage , Liver/metabolism , Liver/drug effects , ATP Binding Cassette Transporter, Subfamily B, Member 1/antagonists & inhibitors , ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
4.
J Orthop ; 58: 140-145, 2024 Dec.
Article in English | MEDLINE | ID: mdl-39100538

ABSTRACT

Introduction: There is no standard protocol for managing non-union of diaphyseal humerus bone, with several authors reporting their results using various techniques and methods for its management. No meta-analysis has reported the results of managing these cases with non-vascularized fibula grafting as an adjuvant for osteosynthesis. Materials and methods: This meta-analysis was performed to estimate the pooled data for calculating the union rates in diaphyseal humerus fractures managed with non-vascularized fibula grafting. Risk of Bias was computed using the Joanna Briggs Institute appraisal tool. Results: A total of 5 studies, comprising 102 patients, were included. The pooled estimate demonstrated that 94 patients achieved bone union with intramedullary fibular strut grafting. The pooled union rate (per 100 events) was 90.59 (95 % CI, 82.86-95.04, I2 = 0). The present meta-analysis also showed a significant improvement in DASH scores following the use of a non-vascularized fibula graft with a common effects model (SMD = 4.08; 95%CI: 3.44; 4.72; p < 0.01 I2 = 19 %, p-value for Q test = 0.29). Conclusion: Non-vascularized fibula grafting is an excellent adjuvant for the internal fixation of non-union diaphyseal humerus fractures. Although there is limited literature, further studies should highlight and assess the treatment of these uncommon but disabling conditions.

5.
Front Plant Sci ; 15: 1346936, 2024.
Article in English | MEDLINE | ID: mdl-39027667

ABSTRACT

The scarcity of high-quality forage has a significant influence on the productivity and profitability of livestock. Addressing this concern, an investigation was undertaken to assess the effects of distinct Italian ryegrass genotypes, namely, Punjab ryegrass-1, Kashmir collection, and Makhan grass, in conjunction with varying seeding ratios of Italian ryegrass to Egyptian clover. The seeding ratios considered were 100:0 (Italian ryegrass to Egyptian clover), 75:25, 50:50, and 25:75. All possible combinations of Italian ryegrass and Egyptian clover with seeding ratios were set up in a randomized complete block design and replicated thrice. Co-cultivating Italian ryegrass and Egyptian clover at a 75:25 seeding ratio yields the best yield benefit, as determined by the land equivalent ratio. It is noteworthy that in this configuration, real yield loss is higher for Egyptian clover and for Italian ryegrass when the seeding ratio is 25:75. The higher competitiveness of Italian ryegrass in comparison to Egyptian clover is highlighted by the competitive ratio. Notably, the nutritive parameter, crude protein yield, was significantly higher in the Makhan grass-based 50:50 and 75:25 seeding ratio. Results of the study ascertained the compatibility of grass-legume co-cultivation with significantly higher quantity and quality forage harvested under mixed cropping systems whereas Makhan grass as the superior and dominant genotype in comparison to Kashmir collection. The outcomes of this study revealed that the 100:0 seeding ratio, coupled with the Makhan grass genotype, exhibited superior performance in terms of cumulative forage harvest, dry matter accumulation, net returns, and benefit-cost ratio.

6.
Curr Pharm Des ; 30(15): 1133-1135, 2024.
Article in English | MEDLINE | ID: mdl-38584552

ABSTRACT

CRISPR and gene editing technologies have emerged as transformative tools in medicine, offering unprecedented precision in targeting genetic disorders and revolutionizing drug development. This review explores the multifaceted impact of CRISPR across various medical domains, from hereditary diseases to infectious diseases and cancer. The potential of CRISPR in personalized medicine, therapeutic innovation, and pandemic prevention is highlighted, along with its role in reshaping traditional drug development processes. However, alongside its promise, ethical considerations loom large, particularly regarding germline editing and equitable access to treatments. The commercialization of CRISPR poses further challenges, raising questions about affordability and healthcare equity. Collaboration among scientists, policymakers, and the public is emphasized to navigate the ethical and societal implications of CRISPR responsibly. As the field advances, it is essential to ensure that the benefits of CRISPR are realized while addressing potential risks and maintaining a commitment to the well-being of future generations.


Subject(s)
Drug Development , Gene Editing , Humans , Gene Editing/methods , CRISPR-Cas Systems/genetics , Precision Medicine , Clustered Regularly Interspaced Short Palindromic Repeats/genetics , Animals
7.
Int J Biol Macromol ; 269(Pt 1): 131806, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38670179

ABSTRACT

Acinetobacter baumannii is a notorious pathogen that commonly thrives in hospital environments and is responsible for numerous nosocomial infections in humans. The burgeoning multi-drug resistance leaves relatively minimal options for treating the bacterial infection, posing a significant problem and prompting the identification of new approaches for tackling the same. This motivated us to focus on non-canonical nucleic acid structures, mainly G-quadruplexes, as drug targets. G-quadruplexes have recently been gaining attention due to their involvement in multiple bacterial and viral pathogenesis. Herein, we sought to explore conserved putative G-quadruplex motifs in A. baumannii. In silico analysis revealed the presence of eight conserved motifs in genes involved in bacterial survival and pathogenesis. The biophysical and biomolecular analysis confirmed stable G-quadruplex formation by the motifs and showed a high binding affinity with the well-reported G-quadruplex binding ligand, BRACO-19. BRACO-19 exposure also decreased the growth of bacteria and downregulated the expression of G-quadruplex-harboring genes. The biofilm-forming ability of the bacteria was also affected by BRACO-19 addition. Taking all these observations into account, we have shown here for the first time the potential of G-quadruplex structures as a promising drug target in Acinetobacter baumannii, for addressing the challenges posed by this infamous pathogen.


Subject(s)
Acinetobacter baumannii , G-Quadruplexes , Acinetobacter baumannii/genetics , Acinetobacter baumannii/drug effects , G-Quadruplexes/drug effects , Biofilms/drug effects , Biofilms/growth & development , Anti-Bacterial Agents/pharmacology , Anti-Bacterial Agents/chemistry , Humans , Gene Expression Regulation, Bacterial/drug effects
8.
Curr Drug Deliv ; 2024 Apr 16.
Article in English | MEDLINE | ID: mdl-38629367

ABSTRACT

Managing bacterial pathogens in the central nervous system is an immense issue for researchers all around the globe. The problem of these infections remains throughout the population, regardless of the discovery of several possible medicines. The major obstacle to drug delivery is the BBB, but only a few medicines that fulfill demanding requirements can penetrate it. Considering inadequate antibiotic alternatives and the increasing development of resistance, it is more important than ever to find new approaches to address this worldwide problem. Medical nanotechnology has evolved as a cutting-edge and effective means of treating many of the most difficult CNS illnesses, including bacterial meningitis. Various metallic nanoparticles, such as gold, silver, and titanium oxide, have shown bactericidal potential. Gold nanoparticles have gotten a great deal of interest due to their excellent biocompatibility, simplicity of surface modification, and optical qualities. The current study described AuNP-based detection and therapy options against meningitis-- causing bacteria, including bacterial pathogens' mechanisms for crossing BBB and AuNPs' mode of Action against those bacteria. The current study looked into green synthesized bactericidal gold nanoparticles-based therapy techniques for diagnosing and intervening in bacterial meningitis. Nevertheless, more research is needed before these laboratory findings can be translated into therapeutic trials. Nonetheless, we can confidently assert that the knowledge acquired and addressed in this study will benefit neuro-nanotechnology researchers.

10.
AAPS PharmSciTech ; 25(3): 55, 2024 Mar 06.
Article in English | MEDLINE | ID: mdl-38448649

ABSTRACT

Prostate cancer remains a significant global health concern, requiring innovative approaches for improved therapeutic outcomes. In recent years, nanoparticle-based drug delivery systems have emerged as promising strategies to address the limitations of conventional cancer chemotherapy. The key trends include utilizing nanoparticles for enhancing drug delivery to prostate cancer cells. Nanoparticles have some advantages such as improved drug solubility, prolonged circulation time, and targeted delivery of drugs. Encapsulation of chemotherapeutic agents within nanoparticles allows for controlled release kinetics, reducing systemic toxicity while maintaining therapeutic efficacy. Additionally, site-specific accumulation within the prostate tumor microenvironment is made possible by the functionalization of nanocarrier with targeted ligands, improving therapeutic effectiveness. This article highlights the basics of prostate cancer, statistics of prostate cancer, mechanism of multidrug resistance, targeting approach, and different types of nanocarrier used for the treatment of prostate cancer. It also includes the applications of nanocarriers for the treatment of prostate cancer and clinical trial studies to validate the safety and efficacy of the innovative drug delivery systems. The article focused on developing nanocarrier-based drug delivery systems, with the goal of translating these advancements into clinical applications in the future.


Subject(s)
Nanoparticles , Prostatic Neoplasms , Male , Humans , Prostatic Neoplasms/drug therapy , Drug Delivery Systems , Kinetics , Solubility , Tumor Microenvironment
11.
Indian J Ophthalmol ; 72(7): 968-975, 2024 Jul 01.
Article in English | MEDLINE | ID: mdl-38454846

ABSTRACT

PURPOSE: To investigate the influence of glomerular filtration rate in renal disease decline and its association with diabetic retinopathy (DR) and age-related macular degeneration (ARMD) in patients in South India. METHODS: A population-based cross-sectional study was conducted including participants with DR and ARMD recruited from urban and rural populations. The data collection included medical history, anthropometric measurements, and ophthalmic work-up. The estimated glomerular filtration rate (eGFR) was calculated using the equation of chronic kidney disease-epidemiology collaboration (CKD-EPI). The grading of AMD was done by a single experienced (more than 5 years) vitreoretinal surgeon as per the International ARM Epidemiological Study Group and it was staged based on grading in the worsened eye. RESULTS: A decline in eGFR was observed as the severity of DR increased ( P < 0.001). Baseline characteristics such as age ( P < 0.001), duration of diabetes ( P < 0.001), gender ( P < 0.001), creatinine ( P < 0.001), albumin to creatinine ratio (ACR; P < 0.001), albuminuria ( P = 0.023), blood urea ( P < 0.001), and high-density lipoprotein (HDL; P = 0.003) were found to be statistically significant. The risk for developing DR with CKD was found to be 5 times higher in male patients compared to female patients. Age and high blood urea level, diastolic blood pressure, mild and moderate DR were the risk factors associated with CKD. A decline in eGFR was observed as the severity of ARMD increased ( P < 0.001). The risk factors associated with CKD were age, gender, smoking, alcohol consumed, presence of hypertension, duration of diabetes, systolic and diastolic blood pressure, history of diabetes, body mass index (BMI), serum triglycerides, and serum HDL cholesterol. CONCLUSION: Reduced eGFR values were associated with an increase in the severity of DR and ARMD.


Subject(s)
Diabetic Retinopathy , Glomerular Filtration Rate , Macular Degeneration , Humans , Male , Female , India/epidemiology , Cross-Sectional Studies , Diabetic Retinopathy/epidemiology , Diabetic Retinopathy/diagnosis , Diabetic Retinopathy/physiopathology , Middle Aged , Aged , Macular Degeneration/epidemiology , Macular Degeneration/diagnosis , Macular Degeneration/physiopathology , Risk Factors , Rural Population/statistics & numerical data , Incidence , Urban Population , Prevalence , Population Surveillance/methods , Retrospective Studies , Adult , Disease Progression
13.
Eur J Gastroenterol Hepatol ; 36(5): 513-519, 2024 May 01.
Article in English | MEDLINE | ID: mdl-38407895

ABSTRACT

BACKGROUND: The relationship of inflammatory bowel disease (IBD) with osteonecrosis or avascular necrosis (AVN) is uncertain. METHODS: Systematic review to estimate the frequency of osteonecrosis in IBD was performed. Electronic databases were searched on 12 December 2022 to identify relevant studies. We planned to estimate the pooled prevalence of AVN in IBD, the risk in IBD when compared to the healthy population (without any chronic disease), and the impact of steroid use on osteonecrosis (IBD with and without steroid use). The risk of Bias was assessed with the Joanna Briggs Institute appraisal tool. RESULTS: Fifteen studies including 105 154 individuals were included. The pooled rate AVN was 10.39 per 1000 patients (95% confidence interval, 4.44-24.11, I 2  = 97%). Subgroup analysis suggested that the prevalence was lower in larger studies (>1000 participants) at 3.10, 1.07; 8.98, I 2  = 98% versus 21.03, 8.69; 50.01, I 2  = 83%. The use of steroids did not seem to increase the risk of osteonecrosis in the included studies (pooled odds ratio: 1.88, 0.55-6.41, I 2  = 39%). The systematic review was limited by the absence of comparison with the control population free of chronic disease. CONCLUSION: IBD may be associated with a risk of osteonecrosis. Future studies should assess the risk in comparison to the healthy population and the impact of disease activity and IBD therapies on the risk.


Subject(s)
Inflammatory Bowel Diseases , Osteonecrosis , Humans , Osteonecrosis/epidemiology , Osteonecrosis/chemically induced , Osteonecrosis/etiology , Inflammatory Bowel Diseases/complications , Inflammatory Bowel Diseases/drug therapy , Inflammatory Bowel Diseases/epidemiology , Prevalence , Risk Factors , Steroids/therapeutic use , Steroids/adverse effects
14.
Appl Opt ; 63(1): 159-166, 2024 Jan 01.
Article in English | MEDLINE | ID: mdl-38175017

ABSTRACT

A fiber-connectorized K-band integrated-optics two-telescope beam combiner was developed for long-baseline interferometry at the CHARA telescope array utilizing the ultrafast laser inscription (ULI) technique. Single-mode waveguide insertion losses were measured to be ∼1.1d B over the 2-2.3 µm window. The development of asymmetric directional couplers enabled the construction of a beam combiner that includes a 50:50 coupler for interferometric combination and two ∼75:25 couplers for photometric calibration. The visibility of the bare beam combiner was measured at 87% and then at 82% after fiber-connectorization by optimizing the input polarization. These results indicate that ULI technique can fabricate efficient fiber-connectorized K-band beam combiners for astronomical purposes.

15.
Telemed J E Health ; 30(3): 664-676, 2024 Mar.
Article in English | MEDLINE | ID: mdl-37651209

ABSTRACT

Purpose: To describe tele-retinal abnormality image findings from the Manhattan Vision Screening and Follow-up Study (NYC-SIGHT), which aims to investigate whether community-based eye health outreach strategies using telemedicine can improve visual outcomes among at-risk populations in Upper Manhattan. Methods: A 5-year prospective, cluster-randomized clinical trial was conducted. Eligible individuals aged 40 years and older were recruited from affordable housing developments and senior centers in New York City. Participants underwent on-site eye health screening (best-corrected visual acuity, intraocular pressure [IOP] measurements, and fundus photography). Fundus images were graded via telemedicine by a retina specialist. Multivariate logistic regression modeling was used to assess the factors associated with abnormal retinal findings requiring referral to ophthalmology. Results: Participants with a retinal abnormality on fundus photography (n = 157) were predominantly older adults, with a mean age of 68.4 ± 11.1 years, female (63.7%), African American (50.3%), and Hispanic (43.3%). A total of 32 participants in our study passed the vision and IOP screening but had an abnormal retinal image and ocular pathology that would have been missed without fundus photography. Individuals who self-identified as having preexisting glaucoma (odds ratio [OR] = 3.749, 95% confidence interval [CI] = 1.741-8.074, p = 0.0001) and had severe vision impairment (OR = 4.1034, 95% CI = 2.0740-8.1186, p = 0.000) at the screening had significantly higher odds of having an abnormal retinal image. Conclusion: This community-based study targeted populations at-risk for eye disease, improved access to eye care, detected a significant number of retinal image abnormalities requiring follow-up by using telemedicine, and provided evidence of the importance of fundus photography during eye health screenings. CTR number: NCT04271709.


Subject(s)
Glaucoma , Telemedicine , Vision Screening , Humans , Female , Adult , Middle Aged , Aged , Follow-Up Studies , Prospective Studies , Glaucoma/diagnosis , Telemedicine/methods , Photography , Mass Screening/methods
16.
Curr Eye Res ; 49(2): 197-206, 2024 Feb.
Article in English | MEDLINE | ID: mdl-37812506

ABSTRACT

PURPOSE: The Manhattan Vision Screening and Follow-up Study aims to provide access to eye care for underserved populations, detect native rates of ocular pathology, and refer participants with eye disease to ophthalmology. This subanalysis describes the reasons for referral to ophthalmology and identifies risk factors associated with being referred. METHODS: Enrolled participants were aged ≥40 years, living independently in public housing developments and able to provide consent for eye health screenings. Those with habitual visual acuity 20/40 or worse, intraocular pressure (IOP) 23-29 mmHg, or an unreadable fundus image failed and were scheduled with the on-site optometrist. The optometric exam determined whether further referral to ophthalmology for a clinic exam was warranted. Those with an abnormal image or IOP ≥30 mmHg were referred directly to ophthalmology. Main outcome was factors associated with referral to ophthalmology. RESULTS: A total of 708 individuals completed the eye health screening over 15 months. A total of 468 participants were referred to ophthalmology (250 had an abnormal image and 218 were referred by the optometrist). Those referred were predominantly older adults (mean age 70.0 ± 11.4 years), female (66.7%), African American (55.1%) and Hispanic (39.5%). Seventy percent of participants had not had a recent eye exam. Stepwise multivariate logistic regression analysis showed that participants with pre-existing glaucoma (OR 3.14, 95% CI 1.62 to 6.08, p = 0.001), an IOP ≥23 mmHg (OR 5.04, 95% 1.91 to 13.28, p = 0.001), or vision impairment (mild) (OR 2.51, 95% CI 1.68 to 3.77, p = 0.001) had significantly higher odds of being referred to ophthalmology. CONCLUSION: This targeted community-based study in Upper Manhattan provided access to eye care and detected a significant amount of ocular pathology requiring referral to ophthalmology in this high-risk population.


Subject(s)
Glaucoma , Ophthalmology , Vision Screening , Humans , Female , Aged , Middle Aged , Aged, 80 and over , Ophthalmology/methods , Follow-Up Studies , Glaucoma/diagnosis , Intraocular Pressure , Referral and Consultation
17.
Eye (Lond) ; 38(5): 1005-1011, 2024 Apr.
Article in English | MEDLINE | ID: mdl-37980397

ABSTRACT

INTRODUCTION: Glauc-Strat-Fast is a clinical tool recommended by The Royal College of Ophthalmologists to classify glaucoma patients into strata of risk for significant future sight loss and an estimate of resource requirement. The aim of this study was to map the movement of glaucoma patients across stratification boundaries on Glauc-Strat-Fast during the COVID-19 pandemic. SUBJECTS AND METHODS: Glauc-Strat-Fast was applied to a consecutive sample of 100 primary open angle glaucoma patients in a backlog at Worcestershire Acute Hospitals NHS Trust. Stratification outcomes were compared between clinic visits prior to the COVID-19 pandemic versus the follow-up visit. Patients were stratified twice separately based on their worse eye (i.e., most affected) and better eye (i.e., least affected) according to Glauc-Strat-Fast. RESULTS: Amount of slippage (difference between target follow-up and actual follow-up) ranged from 2 to 32 months. There was a statistically significant average reduction in visual field mean deviation for better and worse eyes between visits (p = <0.001). At follow-up, no worse eyes were classified as being low risk (green), while 96 were classified as high risk (red). For better eyes, elevation of risk into the highest strata of Glauc-Strat-Fast observed a three-fold increase in patients (19 versus 56) between visits. DISCUSSION: This retrospective real-world analysis highlights patients' movement into the highest strata on the Glauc-Strat-Fast tool and demonstrates a significant deterioration in visual outcomes during a period of extensive appointment slippage. The findings demonstrate the utility of Glauc-Strat-Fast as a tool for improved patient management.


Subject(s)
COVID-19 , Glaucoma, Open-Angle , Glaucoma , Humans , Retrospective Studies , Pandemics , Intraocular Pressure , Vision Disorders , Blindness , Risk Assessment
18.
Int J Biol Macromol ; 256(Pt 1): 128295, 2024 Jan.
Article in English | MEDLINE | ID: mdl-37992929

ABSTRACT

Heart failure (HF) is emerging as a leading cause of death worldwide. Estimation of BNP levels is a routine diagnosis in these patients. However, in patients having high body-mass index (BMI), renal disease or in geriatric patients, BNP level is reported to be noisy and leads to incongruous conclusion. Thus, for better risk stratification among heart failure patients, it is imperative to look for a superior biomarker. In recent times, sST2 has shown promise as a biomarker. Identifying such biomarkers in peripheral blood of HF patients, need an affine and selective molecular recognition element. Thus, in the current study an aptamer (sS9_P) against sST2 was identified from an aptamer library. Systematic Evolution of Ligands through Exponential enrichment (SELEX) derived aptamer evinced role of its primer binding domains in maintaining its selectivity. This aptamer candidate demonstrated dissociation constant (Kd) in low nanomolar range, and the Limit of Detection (LOD) was ~4 ng. Circular dichroism confirms the formation of complex stem-loop like structure. The well characterized sS9_P aptamer was used in an Aptamer Linked Immobilized Sorbent Assay (ALISA) to detect sST2 level in patients' serum (n = 99). Aptamer sS9_P has shown significant discrimination to differentiate HF patients and healthy volunteers with a reasonable specificity (~83 %) with a modest sensitivity of ~64 %. While sST-2 antibody has shown poor specificity of ~44% but good sensitivity (~87%). The insight obtained from this study indicates that a combination of aptamer and antibody-based assay can be used to design a point-of-care assay for the rapid detection of HF patients in emergency settings.


Subject(s)
Aptamers, Nucleotide , Heart Failure , Humans , Aged , Aptamers, Nucleotide/metabolism , Interleukin-1 Receptor-Like 1 Protein , Prognosis , Heart Failure/diagnosis , Biomarkers
19.
Glycobiology ; 34(3)2024 04 01.
Article in English | MEDLINE | ID: mdl-38153163

ABSTRACT

ProGlycProt is a comprehensive database of experimentally validated information about protein glycosylation in prokaryotes, including the glycoproteins, glycosyltransferases, and their accessory enzymes. The first release of ProGlycProt featured experimentally validated information on glycoproteins only. For the second release in 2019, the size and scope of the database were expanded twofold, and experimental data on cognate glycosyltransferases and their accessory proteins was incorporated. The growing research and technology interest in microbial glycoproteins and their enzymes is evident from the steady rise in academic publications and patents in this area. Accordingly, the third update comprises a new section on patents related to glycosylation methods, novel glycosyltransferases, and technologies developed therefrom. The structure gallery is reorganized, wherein the number and quality of the models are upgraded with the help of AlphaFold2. Over the years, the influx of experimental proteomics data into public repositories like PRIDE has surged. Harnessing this legacy data for in-silico glycoprotein identification is a smart approach. Version 3.0 adds 45 N-glycoprotein entries annotated from MS datasets available on PRIDE and reviewed by independent research groups. With a 67% rise in entries corresponding to 119 genera of prokaryotes, the ProGlycProt continues to be the exclusive database of experimentally validated comprehensive information about protein glycosylation in prokaryotes.


Subject(s)
Glycoproteins , Glycosyltransferases , Glycosyltransferases/metabolism , Glycoproteins/metabolism , Prokaryotic Cells/chemistry , Glycosylation , Proteomics
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