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1.
IEEE J Biomed Health Inform ; 28(6): 3379-3388, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38843069

ABSTRACT

Monitoring in-bed pose estimation based on the Internet of Medical Things (IoMT) and ambient technology has a significant impact on many applications such as sleep-related disorders including obstructive sleep apnea syndrome, assessment of sleep quality, and health risk of pressure ulcers. In this research, a new multimodal in-bed pose estimation has been proposed using a deep learning framework. The Simultaneously-collected multimodal Lying Pose (SLP) dataset has been used for performance evaluation of the proposed framework where two modalities including long wave infrared (LWIR) and depth images are used to train the proposed model. The main contribution of this research is the feature fusion network and the use of a generative model to generate RGB images having similar poses to other modalities (LWIR/depth). The inclusion of a generative model helps to improve the overall accuracy of the pose estimation algorithm. Moreover, the method can be generalized for situations to recover human pose both in home and hospital settings under various cover thickness levels. The proposed model is compared with other fusion-based models and shows an improved performance of 97.8% at PCKh @0.5. In addition, performance has been evaluated for different cover conditions, and under home and hospital environments which present improvements using our proposed model.


Subject(s)
Neural Networks, Computer , Posture , Humans , Posture/physiology , Deep Learning , Algorithms , Image Processing, Computer-Assisted/methods , Beds
2.
Anim Biotechnol ; 35(1): 2323592, 2024 Nov.
Article in English | MEDLINE | ID: mdl-38770771

ABSTRACT

Nucleic acid aptamers have been used in the past for the development of diagnostic methods against a number of targets such as bacteria, pesticides, cancer cells etc. In the present study, six rounds of Cell-SELEX were performed on a ssDNA aptamer library against X-enriched sperm cells from Sahiwal breed cattle. Sequencing was used to examine the aptamer sequences that shown affinity for sperm carrying the X chromosome in order to find any possible X-sperm-specific sequences. Out of 35 identified sequences, 14 were selected based on bioinformatics analysis like G-Score and Mfold structures. Further validation of their specificity was done via fluorescence microscopy. The interaction of biotinylated-aptamer with sperm was also determined by visualizing the binding of streptavidin coated magnetic beads on the head region of the sperm under bright field microscopy. Finally, a real-time experiment was designed for the validation of X-sperm enrichment by synthesized aptamer sequences. Among the studied sequences, aptamer 29a exhibited a higher affinity for X sperm compared to Y sperm in a mixed population of sperm cells. By using aptamer sequence 29a, we obtained an enrichment of 70% for X chromosome bearing sperm cells.


Subject(s)
Aptamers, Nucleotide , SELEX Aptamer Technique , Spermatozoa , X Chromosome , Male , Animals , Aptamers, Nucleotide/chemistry , Aptamers, Nucleotide/genetics , Spermatozoa/chemistry , Cattle , X Chromosome/genetics , SELEX Aptamer Technique/methods
3.
Biochem Pharmacol ; 225: 116303, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38797272

ABSTRACT

Biotherapeutics hold great promise for the treatment of several diseases and offer innovative possibilities for new treatments that target previously unaddressed medical needs. Despite successful transitions from preclinical to clinical stages and regulatory approval, there are instances where adverse reactions arise, resulting in product withdrawals. As a result, it is essential to conduct thorough evaluations of safety and effectiveness on an individual basis. This article explores current practices, challenges, and future approaches in conducting comprehensive preclinical assessments to ensure the safety and efficacy of biotherapeutics including monoclonal antibodies, toxin-conjugates, bispecific antibodies, single-chain antibodies, Fc-engineered antibodies, antibody mimetics, and siRNA-antibody/peptide conjugates.


Subject(s)
Antibodies, Monoclonal , Drug Evaluation, Preclinical , Humans , Antibodies, Monoclonal/chemistry , Antibodies, Monoclonal/immunology , Antibodies, Monoclonal/therapeutic use , Animals , Drug Evaluation, Preclinical/methods , Antibodies, Bispecific/chemistry , Antibodies, Bispecific/immunology , Immunoconjugates/chemistry
4.
Int J Biol Macromol ; 270(Pt 1): 132296, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38740159

ABSTRACT

Glycerol kinase (GK) and glycerol 3-phosphate dehydrogenase (GPDH) are critical in glucose homeostasis. The role of genistein and metformin on these enzymes and glucose production was investigated in C2C12, HepG2, and 3T3-L1 cells. Enzyme kinetics, Real-Time PCR and western blots were performed to determine enzyme activities and expressions of mRNAs and proteins. Glucose production and uptake were also measured in these cells. siRNAs were used to assess their impact on the enzymes and glucose production. Ki values for the compounds were determined using purified GK and GPDH. Genistein decreased GK activity by ∼45 %, while metformin reduced cGPDH and mGPDH activities by ∼32 % and âˆ¼43 %, respectively. Insignificant changes in expressions (mRNAs and proteins) of the enzymes were observed. The compounds showed dose-dependent alterations in glucose production and uptake in these cells. Genistein non-competitively inhibited His-GK activity (Ki 19.12 µM), while metformin non-competitively inhibited His-cGPDH (Ki 75.52 µM) and mGPDH (Ki 54.70 µM) activities. siRNAs transfection showed ∼50 % and âˆ¼35 % decrease in activities of GK and mGPDH and a decrease in glucose production (0.38-fold and 0.42-fold) in 3T3-L1 cells. Considering the differential effects of the compounds, this study may provide insights into the potential therapeutic strategies for type II diabetes mellitus.


Subject(s)
Adipocytes , Genistein , Glucose , Glycerol Kinase , Glycerolphosphate Dehydrogenase , Hepatocytes , Metformin , Genistein/pharmacology , Metformin/pharmacology , Mice , Animals , Glycerol Kinase/metabolism , Glycerol Kinase/genetics , Hepatocytes/drug effects , Hepatocytes/metabolism , Humans , Adipocytes/drug effects , Adipocytes/metabolism , Glycerolphosphate Dehydrogenase/metabolism , Glycerolphosphate Dehydrogenase/genetics , Glucose/metabolism , 3T3-L1 Cells , Hep G2 Cells , Glycerophosphates/metabolism , Glycerophosphates/pharmacology , Kinetics
5.
Foods ; 13(7)2024 Apr 08.
Article in English | MEDLINE | ID: mdl-38611429

ABSTRACT

India has increased its wheat production phenomenally in the last two decades and it now has a buffer stock of 9.7 million tonnes. However, despite the release of several wheat cultivars, the end-use quality traits of Indian wheat varieties have not been explored in-depth to determine the increasing demand of the domestic processing industry as well as export. In this study, 55 wheat genotypes including 47 released varieties, and 8 genetic stocks were grown along with 10 Australian varieties grown during cropping seasons: 2019-2020 and 2020-2021 and diversity in different physiochemical and rheological traits was evaluated. They showed considerable diversity in all the quality traits studied. However, very few genotypes could be found suitable for any one end-use. Five genotypes were found to possess four to five traits for superior bread-making quality. Two varieties and three advanced breeding lines had up to four good chapati quality traits. None of the released varieties investigated had suitable traits for biscuit making; however, two breeding lines possessed requisite quality traits suitable for biscuit making. It is, therefore, concluded that systematic breeding efforts are required to develop genotypes that bring together the most important quality traits in a single genotype to be suitable for domestic industry as well as for export.

6.
J Pharm Bioallied Sci ; 16(Suppl 1): S136-S139, 2024 Feb.
Article in English | MEDLINE | ID: mdl-38595458

ABSTRACT

Aim: To determine postoperative pain after root canal instrumentation using manual K-file and rotary Kedo-S files in primary molars. Material and Method: Thirty-six primary mandibular molars from 4- to 8-year-old children requiring pulpectomy were randomly split into two groups of 18 teeth each, that is, manual file K-file (Group I) and Kedo-S rotary file (Group II). Children's pre- and postoperative pain was assessed using a four-point scale at different time intervals. Results: From the result of the present study, it was observed that the Kedo-S group showed significantly less pain after 24, 48, and 72 h. Conclusion: It was concluded from the present research that patients enrolled in the Kedo-s group experienced less pain.

7.
J Health Popul Nutr ; 43(1): 48, 2024 Apr 04.
Article in English | MEDLINE | ID: mdl-38576058

ABSTRACT

BACKGROUND: Integrated-pathy aims to integrate modern medicine with traditional systems via applying the holistic approach of Ayurveda, Yoga, and natural medicine. This is important for addressing the challenges surrounding the delivery of long-term palliative care for chronic ailments including cancer. The prime intent of this study was to substantiate the underlying hypothesis behind the differential and integrative approach having a positive impact on Quality of Life of cancer patients. STUDY DESIGN: Cross-sectional Observational study. METHODS: A standardized questionnaire was developed and used, after obtaining written informed consent from patients to assess the impact of Integrated-pathy on patients (n = 103) diagnosed with cancer receiving care at Patanjali Yoggram. The research was carried out over 8 months. All participants received a uniform treatment protocol as prescribed by Patanjali. For the sample size determination and validation, α and 1-ß was calculated and for the significance of the pre- and post-treatment QoL ratings, Shapiro wilk test and other descriptive statistics techniques were explored. RESULTS: A total of 103 patients seeking cancer special-healthcare were interviewed, out of which 39 (37.86%) remained finally based on the inclusion/exclusion criteria with age (25-65 years), types of cancers (Carcinoma and Sarcoma), chemotherapy/radiotherapy received or not, before opting Integrated-pathy. Follow-ups revealed a significant increase in the QoL (17.91%) after receiving the integrated therapy over a course of at least 1 month. Further, a significant reduction in cancer-related pain followed by an increase in QoL index was reported in the patients. Shapiro-wilk test revealed significant pairing (p < 0.001) with validation of the model using test. CONCLUSIONS: To bolster evidence-based backing for Integrated-pathy, there is a need for clearly delineated clinical indicators that are measurable and trackable over time. Clinical investigators are encouraged to incorporate Integrated-pathy into their proposed interventions and conduct analogous studies to yield sustained advantages in the long run.


Subject(s)
Neoplasms , Quality of Life , Humans , Adult , Middle Aged , Aged , Cross-Sectional Studies , Neoplasms/complications , Neoplasms/therapy , Fatigue/etiology , Fatigue/therapy
8.
Sci Rep ; 14(1): 6210, 2024 03 14.
Article in English | MEDLINE | ID: mdl-38485744

ABSTRACT

Purpose was to study 3-dimensional choroidal contour at choroidal inner boundary (CIB) and choroidal outer boundary (COB) in healthy eyes. Healthy eyes imaged on wide field swept-source optical coherence tomography were included. Delineation of CIB and COB was done based on our previously reported methods. Quantitative analysis of the surfaces of CIB and COB was based on analyzing best fit spherical radius (R) (overall and sectoral). One hundred and seven eyes of 74 subjects with a mean age of 46.4 ± 19.3 years were evaluated. Overall, R COB (mean ± SD: 22.5 ± 4.8 mm) < R CIB (32.4 ± 9.4 mm). Central sector had the least R at COB (7.2 ± 5.9 mm) as well as CIB (25.1 ± 14.3 mm) across all age groups. Regression analysis between R (CIB) and age (r = -0.31, r2 = 0.09) showed negative correlation (P < 0.001) and that between R (COB) and age was positive (r = 0.26, r2 = 0.07) (P = 0.01). To conclude, central sector is the steepest sector in comparison to all the other sectors. This is indicative of a prolate shape of choroidal contour at CIB and COB. Outer boundary of choroid is steeper than inner boundary across all age groups. However, with ageing, outer boundary becomes flatter and inner boundary becomes steeper.


Subject(s)
Aging , Choroid , Humans , Adult , Middle Aged , Aged , Choroid/diagnostic imaging , Tomography, Optical Coherence/methods , Health Status
9.
Eur Arch Otorhinolaryngol ; 281(6): 3279-3281, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38536492

ABSTRACT

BACKGROUND: Angiokeratoma is a rare cutaneous presentation with unknown etiology. CASE PRESENTATION: A case of a 10-year male, who was presented to the ENT OPD with a swelling over the posterior aspect of the tongue. The chief complaints included growth on the right side of the posterior third of the tongue which was extending up to the base of the tongue on the same side. CONCLUSION: Excisional biopsy was taken and sent for histopathology which was suggestive of inflamed angiokeratoma. Post-excision there is no recurrence till date.


Subject(s)
Angiokeratoma , Tongue Neoplasms , Humans , Male , Angiokeratoma/pathology , Angiokeratoma/diagnosis , Tongue Neoplasms/pathology , Tongue Neoplasms/surgery , Tongue Neoplasms/diagnosis , Child , Biopsy
10.
Cureus ; 16(2): e54270, 2024 Feb.
Article in English | MEDLINE | ID: mdl-38500929

ABSTRACT

Migraine is a globally prevalent neurological disorder. Amitriptyline, a tricyclic antidepressant, has shown potential as a prophylactic treatment for migraine; however, its role as a first-line medication has been debated. A modified Delphi method was used to develop consensus statements on migraine and its management. The literature review identified knowledge gaps, and two survey rounds were conducted among a panel of experts. Consensus was reached for 12 out of 23 initial survey questions, whereas no consensus was reached for four questions after the deliberation in the second round. The results showed that migraine is highly prevalent among women aged 15-35 years in India. Amitriptyline is an effective monotherapy for prophylactic migraine management, with a recommended initial dose of 5-10 mg. A gradual titration over six months achieves optimal results. Amitriptyline is also safe for managing catamenial migraine and can be used at lower doses during pregnancy to alleviate symptoms. The outcomes of this study emphasize that amitriptyline should be considered as a primary prophylactic treatment for migraine because of its efficacy and safety. The evidence-based consensus achieved is intended to serve as guidance for healthcare practitioners in India, and it is anticipated that such adoption will lead to improvement in patient outcomes and an enhancement in the quality of life for those affected by migraines.

11.
Eur J Ophthalmol ; : 11206721241235052, 2024 Feb 26.
Article in English | MEDLINE | ID: mdl-38409789

ABSTRACT

PURPOSE: Investigation of pigment epithelial detachment (PED) characteristics in central serous chorioretinopathy (CSCR) is underrepresented in the literature. We present a novel computational approach to quantify PED composition indices (PEDCI) in CSCR and track changes over time. METHODS: 34 eyes with active CSCR were analyzed quarterly over a 1-year period. Cases were categorized into acute and chronic CSCR depending on a symptom duration of less than 3 months or more than 3 months respectively. PED, retinal and choroidal dimensions were manually measured, and interval changes were compared using repeated measures of variance ANOVA. PED composition analysis involved manual segmentation followed by automated sub segmentation of PED areas to identify serous, neovascular and fibrous tissues. PEDCI for each component was compared among cases of acute and chronic CSCR. RESULTS: CMT and NSD-h decreased by 65.2 µm (p = 0.01), and 86.5 µm (p < 0.01) respectively at 12 months. At baseline, 7/17 acute CSCR eyes and 8/15 chronic CSCR eyes had a concomitant PED; acute cases had both serous and neovascular components (PEDCI-S: 16.95%, PEDCI-N: 40.3%), whereas chronic cases only had a neovascular component (PEDCI-S: 0%, PEDCI-N: 30.5%). At 12-month follow-up, 6/7 of acute CSCR group and 6/8 chronic CSCR group had a concomitant PED; PEDCI-S was largest for acute CSCR (53.4%) and PEDCI-N was largest for chronic CSCR (46.7%). CONCLUSION: We identify a novel biomarker PEDCI to differentiate acute and chronic CSCR with higher PEDCI-S in acute CSCR, and higher PEDCI-N in chronic CSCR.

12.
Opt Lett ; 49(4): 1053-1056, 2024 Feb 15.
Article in English | MEDLINE | ID: mdl-38359251

ABSTRACT

The existing methods for the generation of arbitrary vector vortex beams often involve complex optical setups or intricate fabrication methods. In this Letter, we propose a novel, to the best of our knowledge, and simplified approach for the efficient generation of vector vortex beams using a polarization-multiplexed hologram fabricated on an azo-carbazole polymer using a simple double-exposure technique. The hologram generates a vector vortex beam when simply illuminated by a collimated beam and also allows for a seamless traversal across the entire higher-order Poincaré sphere (arbitrary vortex beam generation) just by modulating the polarization of an illuminating beam.

13.
Int J Retina Vitreous ; 10(1): 18, 2024 Feb 15.
Article in English | MEDLINE | ID: mdl-38360819

ABSTRACT

PURPOSE: To compare changes in the fibrous component of pigment epithelium detachment composition indices (PEDCI-F) in neovascular age-related macular degeneration (n-AMD) and polypoidal choroidal vasculopathy (PCV) over 12 months. METHODS: This was a retrospective chart review of treatment-naïve n-AMD and PCV eyes treated with anti-vascular endothelial growth factor (anti-VEGF) agents. Optical coherence tomography (OCT) images were recorded at baseline and at 3, 6, and 12 months. OCT images were processed by filtering followed by pigment epithelium detachment (PED) segmentation and analysis of PED lesion heterogeneity based on the composition (PEDCI-F). RESULTS: A total of 74 eyes with n-AMD (36) and PCV (38) were included. Overall, PEDCI-F increased minimally in both n-AMD and PCV groups (both p > 0.05). The majority, i.e., 58.3% and 60.5%, of n-AMD and PCV eyes, respectively, showed an increase in PEDCI-F at 12 months. An increase in PEDCI-F was associated with improved BCVA logMAR (n-AMD, r = -0.79; p < 0.001 and PCV, r = - 0.06; p = 0.74) and the need for fewer anti-VEGF injections (n-AMD, r = - 0.53; p < 0.001 and PCV, r = - 0.09; p = 0.58). CONCLUSION: PEDCI-F increases in the majority of eyes with n-AMD and PCV through 12 months following treatment with anti-VEGF injections. This group had better visual acuity compared to the other subset with reduction in PEDCI-F requiring more anti-VEGF injections and worse visual acuity, possibly due to fibrovascular PED (FVPED) collapse and atrophy or a relative increase in other PEDCI constituents at 12 months.

14.
Nanoscale ; 16(7): 3498-3509, 2024 Feb 15.
Article in English | MEDLINE | ID: mdl-38265155

ABSTRACT

Flexible strain sensors have garnered attraction in the human healthcare domain. However, caveats like crosstalk and noise associated with the output signal of such a sensor often limit the accuracy. Hence, developing a strain sensor via frugal engineering is critical, thereby warranting its mass utility. A stencil printable graphene/liquid elastomeric crosstalk-free strain sensor for unobtrusive respiratory monitoring is reported herein. Printing supports the frugality of the process and avoids complex fabrication. The sensor was mounted on a wearable mask, and the sensor console was fabricated. The console demonstrated the capability to detect the respiratory profile at room and low temperature (-26 °C) with an SNR of -12.85 dB. Developed sensors could nullify the impact of temperature and humidity and generate respiratory signals due to strain induced by breathing. A model experiment was conducted to support the fidelity of the strain mechanism. The console demonstrated excellent stability (over 500 cycles) with a sensitivity of -196.56 (0-0.17% strain) and 117.49 (0.17-0.34% strain). The console could accurately determine conditions like eupnea, tachypnoea, etc., and transmit the data wirelessly via Bluetooth. These findings solve major caveats in flexible sensor development by focusing on selectivity, sensitivity, and stability.


Subject(s)
Graphite , Wearable Electronic Devices , Humans , Elastomers , Temperature , Respiration
15.
ASAIO J ; 70(3): 167-176, 2024 Mar 01.
Article in English | MEDLINE | ID: mdl-38051987

ABSTRACT

Extracorporeal membrane oxygenation (ECMO) is a form of temporary cardiopulmonary bypass for patients with acute respiratory or cardiac failure refractory to conventional therapy. Its usage has become increasingly widespread and while reported survival after ECMO has increased in the past 25 years, the incidence of neurological injury has not declined, leading to the pressing question of how to improve time-to-detection and diagnosis of neurological injury. The neurological status of patients on ECMO is clinically difficult to evaluate due to multiple factors including illness, sedation, and pharmacological paralysis. Thus, increasing attention has been focused on developing tools and techniques to measure and monitor the brain of ECMO patients to identify dynamic risk factors and monitor patients' neurophysiological state as a function in time. Such tools may guide neuroprotective interventions and thus prevent or mitigate brain injury. Current means to continuously monitor and prevent neurological injury in ECMO patients are rather limited; most techniques provide indirect or postinsult recognition of irreversible brain injury. This review will explore the indications, advantages, and disadvantages of standard-of-care, emerging, and investigational technologies for neurological monitoring on ECMO, focusing on bedside techniques that provide continuous assessment of neurological health.


Subject(s)
Brain Injuries , Extracorporeal Membrane Oxygenation , Heart Failure , Respiratory Insufficiency , Adult , Humans , Child , Extracorporeal Membrane Oxygenation/adverse effects , Extracorporeal Membrane Oxygenation/methods , Heart Failure/etiology , Brain , Brain Injuries/prevention & control , Brain Injuries/etiology , Respiratory Insufficiency/therapy , Retrospective Studies
16.
Graefes Arch Clin Exp Ophthalmol ; 262(5): 1489-1498, 2024 May.
Article in English | MEDLINE | ID: mdl-38141059

ABSTRACT

PURPOSE: To evaluate novel, automated biomarkers, pigment epithelial detachment composition indices (PEDCI) in eyes with neovascular age-related macular degeneration (nAMD) undergoing anti-vascular endothelial growth factor (anti-VEGF) therapy through 24 months. METHODS: Retrospective analysis of 37 eyes (34 patients) with PED associated with nAMD receiving as-needed anti-VEGF treatment was performed. Best-corrected visual acuity (BCVA) and optical coherence tomography images were acquired at a treatment-naïve baseline and 3-, 6-, 12-, 18-, and 24-month visits. Previously validated automated imaging biomarkers, PEDCI-S (serous), PEDCI-N (neovascular), and PEDCI-F (fibrous) within PEDs were measured. ANOVA analysis and Spearman correlation were performed. RESULTS: Mean BCVA (in logMAR) was 0.60 ± 0.47, 0.45 ± 0.41, 0.49 ± 0.49, 0.61 ± 0.54, 0.59 ± 0.56, and 0.67 ± 0.57 at baseline, 3, 6, 12, 18, and 24 months respectively. Overall, BCVA showed minimal worsening of 0.07 ± 0.54 logMAR (p = 0.07). 13.38 ± 3.77 anti-VEGF injections were given through 24 months. PEDCI-F showed an increase of 0.116, 0.122, 0.036, and 0.006 at months 3, 6, 12, and 18 respectively and a decrease of 0.004 at month 24 (p = 0.03); PEDCI-S showed a decrease of 0.064, 0.130, 0.091, 0.092, and 0.095 at months 3, 6, 12, 18, and 24 respectively (p = 0.16); PEDCI-N showed a decrease of 0.052 at month 3 and an increase of 0.008, 0.055, 0.086, and 0.099 at months 6, 12, 18, and 24 respectively (p = 0.06). BCVA was negatively correlated with PEDCI-F (r = -0.28, p < 0.01), and positively correlated with PEDCI-N (r = 0.28, p < 0.01) and PEDCI-S (r = 0.15, p = 0.03). CONCLUSION: Longitudinal analysis of PEDCI supports their utility as biomarkers that characterize treatment related effects by quantifying the relative composition of PEDs.


Subject(s)
Macular Degeneration , Retinal Detachment , Wet Macular Degeneration , Humans , Child, Preschool , Angiogenesis Inhibitors/therapeutic use , Ranibizumab/therapeutic use , Retrospective Studies , Retinal Detachment/diagnosis , Retinal Detachment/drug therapy , Tomography, Optical Coherence , Macular Degeneration/diagnosis , Macular Degeneration/drug therapy , Intravitreal Injections , Wet Macular Degeneration/diagnosis , Wet Macular Degeneration/drug therapy
17.
Eur J Ophthalmol ; : 11206721231204383, 2023 Oct 03.
Article in English | MEDLINE | ID: mdl-37787166

ABSTRACT

PURPOSE: To report the emergence and progress of four late-stage characteristics: incomplete retinal pigment epithelium and outer retinal atrophy (iRORA) and complete RPE and outer retinal atrophy (cRORA), drusen ooze and drusen collapse in eyes with dry age-related macular degeneration (AMD) using Spectral Domain Optical Coherence Tomography (SD-OCT). METHODS: This was a retrospective analysis of eyes with non-exudative AMD. Multimodal imaging was done at follow up visits ≤ 12 months. OCT volume scan was used to assess and identify the 4 characteristics. Univariate analysis was done for the various demographic and clinical characteristics.Patients with a mean age of 76.7 ± 10 years were followed up for 69.9 ± 20.6 months. iRORA, cRORA, drusen ooze was present in 15.6%, 15.6% and 15.6% of patients at baseline, respectively, and 25.0%, 40.6% and 53.1% of patients at the final follow-up, respectively. At baseline 9.1%, 0% and 9.1% of patients had bilateral drusen ooze, iRORA and cRORA, respectively. By the final follow-up, drusen collapse occurred in 46.9% and 18.8% patients in unilateral and bilateral eyes, respectively.For bilateral cases, the mean interval of time between emergence inthe two eyes for drusen ooze, drusen collapse, iRORA, and cRORA was 5 ± 1.4 years, 2.2 ± 2.2 years, 3.5 ± 0.7 and 1.7 ± 0.6 years, respectively. CONCLUSIONS: Late-stage OCT biomarkers are seen bilaterally at 21.9% at baseline and at 56.3% at 5.8 years follow-up. Once present in one eye, cRORA had the shortest mean interval before appearance in the other eye.

18.
Sci Rep ; 13(1): 16472, 2023 09 30.
Article in English | MEDLINE | ID: mdl-37777624

ABSTRACT

γ-Terpinene, a monoterpene widely present in essential oils of many medicinal and aromatic plants with numerous biological properties, was evaluated for its insecticidal activity against melon fruit fly, Zeugodacus cucurbitae (Coquillett). Different concentrations (5, 25, 125, 625, and 3125 ppm) of γ-terpinene along with control were fed to larvae of melon fly. The number of pupae formed and adults emerged declined significantly after treatment. Morphologically deformed adults and pupae were also observed. The developmental duration too prolonged in treated larvae. Food assimilated, mean relative growth rate, larval weight gain, and pupal weight also declined. In the larvae treated with LC30 and LC50 concentrations, there was a decline in the titers of phenoloxidase and total hemocyte count, and variations were observed in the differential hemocyte count, suggesting an immunosuppressive effect of γ-terpinene on melon fly. Both concentrations also led to an increase in the apoptotic and necrotic cells as well as decrease in the viable hemocytes in the circulating hemolymph of treated larvae. Comet parameters (tail length, % tail DNA, tail moment, and olive tail moment) of γ-terpinene fed larvae increased significantly. Given the observed effects of γ-terpinene on normal developmental and nutritional physiology, its immunosuppressive properties, and its potential for genome damage, it can be considered for incorporation into integrated pest management strategies for controlling Z. cucurbitae.


Subject(s)
Cucurbitaceae , Tephritidae , Animals , Tephritidae/genetics , Larva , Pupa
19.
J Org Chem ; 88(19): 13440-13453, 2023 Oct 06.
Article in English | MEDLINE | ID: mdl-37747895

ABSTRACT

This report describes a convenient method for the Cu(I)-catalyzed Sonogashira cross-coupling reaction of aryl/heteroaryl halides and alkynyl sugars in the presence of a 1,2,3-triazole-appended glycohybrid as a biocompatible ligand. The Sonogashira cross-coupling products were exclusively formed without the Glaser-Hay homocoupling reaction in the presence of a glycosyl monotriazolyl ligand at 120 °C. However, the Glaser-Hay homocoupling products were obtained at 60-70 °C in the presence of bis-triazolyl-based macrocyclic glycohybrid ligand L8. The glycosyl triazole ligands were synthesized via the CuI/DIPEA-mediated regioselective CuAAC click reaction, and a series of glycohybrids of glucose, mannose, and galactose alkynes including glycosyl rods were developed in good yields. The developed glycohybrids have been well characterized by various spectroscopic techniques, such as nuclear magnetic resonance, high-resolution mass spectrometry, and single-crystal X-ray data of L3. The protocol works well with the heteroaryl and naphthyl halides, and the mechanistic approach leads to CuI/ligand-assisted oxidative coupling. The coupling protocol has notable features, including low catalytic loading, cost-effectiveness, biocompatible nature, and a wide substrate scope.

20.
Toxicon ; 233: 107248, 2023 Sep.
Article in English | MEDLINE | ID: mdl-37562702

ABSTRACT

Insects have evolved a robust immune system consisting of humoral and cellular branches and their orchestrated response enables insect to defend against exogenous stressors. Exploration of underlying immune mechanisms of insect pest under allelochemical stress can give us new insights on insect pest management. In this study, nerolidol, a plant sesquiterpene was evaluated for its insecticidal, growth regulatory, immunomodulatory, and cyto-genotoxic effects against melon fruit fly, Zeugodacus cucurbitae (Coquillett). First, second, and third instar larvae of Z. cucurbitae were fed on artificial diet containing different concentrations (5, 25, 125, 625, and 3125 ppm) of nerolidol. Results revealed a significant reduction in pupation and adult emergence as well as prolongation of developmental duration of treated larvae. Decline in growth indices showed remarkable growth inhibitory effects of nerolidol. Pupal weight and nutritional parameters viz. Larval weight gain, food assimilated, and mean relative growth rate declined after treatment. Immunological studies on second instar larvae depicted a drop in total hemocyte count and variations in proportions of plasmatocytes and granulocytes of LC30 and LC50 treated larvae. Phenoloxidase activity in nerolidol treated larvae initially increased but was suppressed after 72 h of treatment. The frequency of viable hemocytes decreased and that of apoptotic and necrotic hemocytes increased with both the lethal concentrations of nerolidol. Comet assay revealed a significant damage to DNA of hemocytes. The findings of the current study indicate that nerolidol exerts its insecticidal action through growth regulation, immunomodulation, and cyto-genotoxicity thus revealing its potential to be used as biopesticide against Z. cucurbitae.


Subject(s)
Cucurbitaceae , Insecticides , Sesquiterpenes , Tephritidae , Animals , Sesquiterpenes/toxicity , Larva , Insecticides/toxicity , DNA Damage
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