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Kaur R, Singh RK, Vibha D, Gaikwad S, Tripathi M. Drug refractory epilepsy in MOGAD: an evolving spectrum. Neurol Sci 2024; 45:1779-1781. [PMID: 38048015 DOI: 10.1007/s10072-023-07243-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 11/28/2023] [Indexed: 12/05/2023]
Affiliation(s)
- Ranjot Kaur
- Department of Neurology, Neurosciences Centre, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Rajesh Kumar Singh
- Department of Neurology, Neurosciences Centre, All India Institute of Medical Sciences, New Delhi, 110029, India.
| | - Deepti Vibha
- Department of Neurology, Neurosciences Centre, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Shailesh Gaikwad
- Department of Neuroradiology, All India Institute of Medical Sciences, New Delhi, India
| | - Manjari Tripathi
- Department of Neurology, Neurosciences Centre, All India Institute of Medical Sciences, New Delhi, 110029, India
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Ghosh A, Goyal K, Singh R, Lakshmi PVM, Kaur R, Kumar V, Muralidharan J, Puri GD, Ram J, Singh MP. High prevalence of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) antibodies among unvaccinated children of Chandigarh, Northwest India, in a household-based paediatric serosurvey post-second wave of pandemic (June to July 2021). Public Health 2023; 225:160-167. [PMID: 37931485 DOI: 10.1016/j.puhe.2023.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 09/05/2023] [Accepted: 10/04/2023] [Indexed: 11/08/2023]
Abstract
OBJECTIVE Current national severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccination policy covers children aged >12 years. Unvaccinated, uninfected children remain susceptible to SARS-CoV-2 and play a role in community transmission, as paediatric infection is mostly mild or asymptomatic. To estimate the proportion of susceptible children in a community for public health measures, there is a need to assess the extent of natural infection. STUDY DESIGN We performed a cross-sectional household serosurvey of SARS-CoV-2 antibodies in unvaccinated children aged between 6 and 18 years after the second COVID-19 wave. METHODS Anti-SARS-CoV-2 immunoglobin G (IgG) testing in serum was done using chemiluminescence immunoassay. We used a logistic regression model to investigate predicted factors of seropositivity. RESULTS We observed a high prevalence (weighted average: 68.3%) of anti-SARS-CoV-2 IgG in 2700 enrolled children. Logistic regression for predictors of IgG seropositivity showed lower odds in households with completely vaccinated adults (adjusted odds ratio [OR]: 0.43, 95% confidence interval [CI]: 0.26-0.71, P = 0.0011) compared with households with unvaccinated adults. Other factors for low seropositivity included frontline workers as family members (adjusted OR: 0.69, 95% CI: 0.52-0.91, P = 0.0091) and non-crowded households (adjusted OR: 0.74, 95% CI: 0.61-0.89, P = 0.0019). CONCLUSION A high SARS-CoV-2 IgG prevalence in unvaccinated children was indicative of previous exposure to potentially infected contacts. This implies in-person academic activities for children can be continued during future community transmission. Comparatively lower seropositivity in children of completely vaccinated households or frontline workers suggests decreased transmission due to vaccination-induced immunity of family members. Vaccination will still be required in these children to maintain protective IgG levels, particularly in low seroprevalence groups.
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Affiliation(s)
- A Ghosh
- Department of Virology, Post-graduate Institute of Medical Education & Research, Chandigarh, India
| | - K Goyal
- Department of Virology, Post-graduate Institute of Medical Education & Research, Chandigarh, India
| | - R Singh
- Department of Community Medicine & School of Public Health, Post-graduate Institute of Medical Education & Research, Chandigarh, India
| | - P V M Lakshmi
- Department of Community Medicine & School of Public Health, Post-graduate Institute of Medical Education & Research, Chandigarh, India
| | - R Kaur
- Department of Virology, Post-graduate Institute of Medical Education & Research, Chandigarh, India
| | - V Kumar
- Department of Virology, Post-graduate Institute of Medical Education & Research, Chandigarh, India
| | - J Muralidharan
- Advanced Pediatric Centre, Post-graduate Institute of Medical Education & Research, Chandigarh, India
| | - G D Puri
- Department of Anaesthesiology & Critical Care, Post-graduate Institute of Medical Education & Research, Chandigarh, India
| | - J Ram
- Department of Ophthalmology, Post-graduate Institute of Medical Education & Research, Chandigarh, India
| | - M P Singh
- Department of Virology, Post-graduate Institute of Medical Education & Research, Chandigarh, India.
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Kaur R, GholamHosseini H. Analyzing the Impact of Image Denoising and Segmentation on Melanoma Classification Using Convolutional Neural Networks. Annu Int Conf IEEE Eng Med Biol Soc 2023; 2023:1-4. [PMID: 38083686 DOI: 10.1109/embc40787.2023.10340135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Early skin cancer detection and its treatment are crucial for reducing death rates worldwide. Deep learning techniques have been used successfully to develop an automatic lesion detection system. This study explores the impact of pre-processing steps such as data augmentation, contrast enhancement, and segmentation on improving the convolutional neural network (CNN) performance for lesion classification. The classification network was designed from scratch by uniquely organizing its layers and using a different number of kernels, depth of the network, size, and hyperparameters. In addition, the network's performance was improved by pre-processing and segmentation steps. The proposed network was compared with the current state-of-the-art to demonstrate its best performance on the benchmark HAM10000 lesion dataset. The experimental study revealed that the classification network using denoised+segmented data achieved an accuracy (ACC), precision (PRE), recall (REC), specificity (SPE), and F-score of 93.40%, 93.45%, 94.51%, 92.08%, and 93.98%, respectively. To conclude, classification performance can be improved by incorporating pre-processing and segmentation steps.
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Abstract
AIMS Considerable number of studies in the existing literature indicate the existence of stigma related to many diseases, disabilities, and disorders, but less attention has been given to diabetes-related stigma. This narrative review of literature aims to explore the existence of stigma surrounding type 1 diabetes mellitus (T1DM). METHODS Literature were searched using search engines, Google Scholar, PubMed, and Scopus electronic databases published from year 2000 to 2020. Both qualitative and quantitative studies focusing on the stigma associated with T1DM were included. A total of 21 articles met the inclusion criteria. Thematic analysis of collected research material was done. RESULTS Results provided substantial evidence that stigma associated with T1DM was experienced by T1DM patients and their caregivers at some point in their lives and it had affected their lives in different domains such as difficulty finding a spouse, discrimination at employment opportunities, educational institutions, management of disease, being misjudged as a druggie, poor quality of life of the patient and caregiver, depressive symptoms among parents of patients, constant worrying of their child's disease management, and so on. CONCLUSION Stigma related to T1DM is experienced by individuals suffering from it, and it is widespread. It not only affects the sufferers but their loved ones also. To reduce and cope-up with stigma, there is a need to increase public education and awareness at a mass level. Further research and awareness will serve to build our understanding of the experience of diabetes-related stigma.
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Affiliation(s)
- R Kaur
- Research Scholar (UGC-SRF), Department of Anthropology, Panjab University, Chandigarh 160014, India
| | - A K Sinha
- Professor, Department of Anthropology, Panjab University, Chandigarh, India
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Kaur R, Mishra S, Nevolin I, Roy Choudhury D, Singh M. Nutritional anemia: Patent landscape. World Patent Information 2022. [DOI: 10.1016/j.wpi.2022.102123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Kaur R, Garg AK, Gupta DK, Singla L, Aggarwal K. Effect of Twin Block Therapy Versus Fixed Functional Appliances on Pharyngeal Airway Space in Skeletal Class II Patients: A Prospective Cephalometric Study. Clin Ter 2022; 173:306-315. [PMID: 35857047 DOI: 10.7417/ct.2022.2439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
BACKGROUND Class II malocclusion is one of the most common malocclusion with varied prevalence. Functional therapy with appliances like Twin Block or Fixed functional appliances forms the mainstay of treatment in growing Class II patients. These patients might demonstrate narrow airway due to the retrognathic position of the mandible. This study investigated the effects of twin block and fixed functional appliance therapy (Forsus™ FRD) on the pharyngeal airway space in skeletal Class II patients. METHODS Forty patients with Class II malocclusion were selected and divided into two equal groups of 20 patients each for both Twin block and Forsus group. Lateral cephalograms were obtained before and after the functional appliance therapy. Evaluation was done for changes in hyoid bone position, pharyngeal airway dimensions and tongue position. RESULTS The variables of the study showed better hyoid position in both the groups. In Twin Block group, an increase in hy-apw2 and hy-PoFH suggested anterior positioning of hyoid and a decrease in H-MP and hy-ML indicated superior positioning. In Forsus group an increase in H-H', hy-FH, hy-ML, hy-NL, hy-NSL and hy-OL suggested inferior positioning of hyoid, while an increase in hy-apw2, hy-CVT, hy-PoFH, hy-RL and hy'-tgo indicated anterior positioning of hyoid bone after functional therapy. CONCLUSION Both the twin block and Forsus™ FRD improved the position of the hyoid bone after the functional appliance therapy however the changes were not statistically significant. Twin block and Forsus™ had similar effect on the hyoid bone position, pharyngeal dimensions and the tongue position.
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Affiliation(s)
- R Kaur
- Consultant Orthodontist and Former PG Resident, Department of Orthodontics and Dentofacial Orthopedics, Panjab University Chandigarh, India
| | - A K Garg
- Associate Professor, Department of Orthodontics and Dentofacial Orthopedics, Panjab University Chandigarh, India
| | - D K Gupta
- rofessor, Department of Orthodontics and Dentofacial Orthopedics, Panjab University Chandigarh, India
| | - L Singla
- Senior Lecturer, Department of Orthodontics and Dentofacial Orthopedics, Panjab University Chandigarh, India
| | - K Aggarwal
- Consultant Orthodontist and Former PG Resident, Department of Orthodontics and Dentofacial Orthopedics, Panjab University Chandigarh, India
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Kaur R, Dennison SR, Rudramurthy SM, Katare OP, Sharma T, Singh B, Singh KK. Aerosolizable Lipid-Nanovesicles Encapsulating Voriconazole Effectively Permeate Pulmonary Barriers and Target Lung Cells. Front Pharmacol 2022; 12:734913. [PMID: 35391905 PMCID: PMC8982086 DOI: 10.3389/fphar.2021.734913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 09/27/2021] [Indexed: 11/13/2022] Open
Abstract
The entire world has recently been witnessing an unprecedented upsurge in microbial lung infections. The major challenge encountered in treating the same is to ensure the optimum drug availability at the infected site. Aerosolization of antimicrobials, in this regard, has shown immense potential owing to their localized and targeted effect. Efforts, therefore, have been undertaken to systematically develop lung-phosphatidylcholine-based lipid nanovesicles of voriconazole for potential management of the superinfections like aspergillosis. LNVs, prepared by thin-film hydration method, exhibited a globule size of 145.4 ± 19.5 nm, polydispersity index of 0.154 ± 0.104 and entrapment efficiency of 71.4 ± 2.2% with improved in vitro antifungal activity. Aerodynamic studies revealed a microdroplet size of ≤5 μm, thereby unraveling its promise to target the physical barrier of lungs effectively. The surface-active potential of LNVs, demonstrated through Langmuir-Blodgett troughs, indicated their ability to overcome the biochemical pulmonary surfactant monolayer barrier, while the safety and uptake studies on airway-epithelial cells signified their immense potential to permeate the cellular barrier of lungs. The pharmacokinetic studies showed marked improvement in the retention profile of voriconazole in lungs following LNVs nebulization compared to pristine voriconazole. Overall, LNVs proved to be safe and effective delivery systems, delineating their distinct potential to efficiently target the respiratory fungal infections.
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Affiliation(s)
- Ranjot Kaur
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, India
- University of Central Lancashire, Preston, United Kingdom
| | | | | | - O P Katare
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, India
| | - Teenu Sharma
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, India
| | - Bhupinder Singh
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, India
- UGC Center for Excellence in Nano-Biomedical Applications, Panjab University, Chandigarh, India
- *Correspondence: Kamalinder K Singh, ; Bhupinder Singh,
| | - Kamalinder K Singh
- University of Central Lancashire, Preston, United Kingdom
- UCLan Research Centre for Smart Materials, University of Central Lancashire, Preston, United Kingdom
- UCLan Research Centre for Translational Biosciences and Behaviour, University of Central Lancashire, Preston, United Kingdom
- *Correspondence: Kamalinder K Singh, ; Bhupinder Singh,
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Davis J, Dahlberg S, Marchetti P, Schumann C, Kaur R, Greenberg J, Bacon C, Scalia S, Sawicki G. 164: Short-term day-to-day variability and acceptability of home-based spirometry in cystic fibrosis. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01589-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kaur R, Hosseini HG, Sinha R. Lesion Border Detection of Skin Cancer Images Using Deep Fully Convolutional Neural Network with Customized Weights. Annu Int Conf IEEE Eng Med Biol Soc 2021; 2021:3035-3038. [PMID: 34891883 DOI: 10.1109/embc46164.2021.9630512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Deep learning techniques have been widely employed in semantic segmentation problems, especially in medical image analysis, for understanding image patterns. Skin cancer is a life-threatening problem, whereas timely detection can prevent and reduce the mortality rate. The aim is to segment the lesion area from the skin cancer image to help experts in the process of deeply understanding tissues and cancer cells' formation. Thus, we proposed an improved fully convolutional neural network (FCNN) architecture for lesion segmentation in dermoscopic skin cancer images. The FCNN network consists of multiple feature extraction layers forming a deep framework to obtain a larger vision for generating pixel labels. The novelty of the network lies in the way layers are stacked and the generation of customized weights in each convolutional layer to produce a full resolution feature map. The proposed model was compared with the top four winners of the International Skin Imaging Collaboration (ISIC) challenge using evaluation metrics such as accuracy, Jaccard index, and dice co-efficient. It outperformed the given state-of-the-art methods with higher values of the accuracy and Jaccard index.
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Kaur R. Drug Information Association (DIA) 2021 Global Annual Meeting (June 26-July 1, 2021 - Virtual Meeting). Drugs Today (Barc) 2021; 57:631-637. [PMID: 34713871 DOI: 10.1358/dot.2021.57.10.3365972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
At the 57th Global Annual Meeting of the Drug Information Association (DIA), attendees met virtually for the second time to support the theme of 'Collaboration without Boundaries.' Sessions included presenters and speakers from regulatory agencies, patient advocacy and academia, with patients at the forefront of discussions. This report covers a number of presentations and panel discussions from the 4-day meeting that primarily focused on the COVID-19 global pandemic.
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Affiliation(s)
- R Kaur
- Clarivate, Philadelphia, Pennsylvania, USA.
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Kaur R, Kaur M, Suri V. Phenotypic presentation of PCOS with respect to BMI in a north Indian population. Clin Ter 2021; 172:435-437. [PMID: 34625775 DOI: 10.7417/ct.2021.2354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract PCOS is one of the emerging health issues of women in their reproductive age with a range of associated signs and symptoms. In the present study, 250 PCOS subjects age ranged from 18 to 45 years and residing in the Chandigarh Capital Region (CCR) were selected from the OPD, PGIMER, Chandigarh, (North India). In the present study H+O phenotypic group (NIH criteria) was the most commonly occurring with the prevalence of 50.4% followed by complete PCO or classic PCOS phenotype (P+H+O) with 39.2% prevalence. The ovula-tory PCOS (P+H) and non-hyperandrogenic PCOS (P+O) demonstrated little prevalence of 6% and 4.4% respectively. Maximum overweight/obese PCOS women were recorded in the (H+O) phenotypic group (27.2%) followed by classic PCOS phenotype (20.4%), (P+H) phe-notype (4%) and lowest prevalence in P+O phenotype (1.2%), thereby indicating that hyperandrogenism and oligo-anovulation was common symptoms among overweight/obese PCOS women.
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Affiliation(s)
- R Kaur
- Research Scholar, Department of Anthropology, Panjab University, Chandigarh, India
| | - M Kaur
- Assistant Professor, Department of Anthro-pology, Panjab University, Chandigarh, India
| | - V Suri
- Professor and Head, Department of Obstetrics and Gynaecology, PGIMER, Chandi-garh, India
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Sharma T, Jain A, Kaur R, Saini S, Katare OP, Singh B. Supersaturated LFCS type III self-emulsifying delivery systems of sorafenib tosylate with improved biopharmaceutical performance: QbD-enabled development and evaluation. Drug Deliv Transl Res 2021; 10:839-861. [PMID: 32415654 DOI: 10.1007/s13346-020-00772-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The current studies investigate the application of quality by design-enabled type III self-emulsifying delivery system (Type III-SEDDS) of sorafenib tosylate (SFN) in improving its biopharmaceutical attributes. Initially, lipidic and emulsifying excipients were selected by carrying out solubility and phase titration experiments. After screening studies using Taguchi OA design, Type III-SEDDS were further optimised using D-optimal mixture design. The prepared formulations were assessed for globule size, zeta potential and percent of drug release. Following graphical optimisation, the optimum formulation was earmarked and further supersaturated to form saturated Type III-SEDDS (Sat-Type III-SEDDS) using a combination of HPMC and PVP to improve the stability of the formulation for a prolonged period. In vitro drug release of Type III-SEDDS study indicated approximately 8-fold improvement in dissolution rate over the pure powder drug. Cell uptake studies demonstrated higher uptake of dye-loaded Type III-SEDDS formulations in Caco-2 cells vis-à-vis plain dye. Cytotoxicity assay on Hep G2 cells revealed significant reduction in cell growth with Type III- and Sat-Type III-SEDDS vis-à-vis the pure drug. Furthermore, in situ permeation studies carried out using Wistar rats exhibited nearly 8.3- to 10.2-fold augmentation in permeation and absorption parameters of the drug from the Type III- and Sat-Type III-SEDDS, respectively, vis-à-vis the pure drug. Pharmacokinetic studies indicated nearly 3.98- and 3.62-fold improvement in AUC0-72, and 8.01- and 5.42-fold in Cmax, along with 0.25-fold decrease in Tmax of the drug from Type III- and Sat-Type III-SEDDS, respectively, in comparison with the SFN suspension. Furthermore, high degree of level A linear correlation was established between fractions of drug dissolved (in vitro) and of drug absorbed (in vivo) at the corresponding time points for Sat-Type III-SEDDS and pure drug, whereas the Type III-SEDDS exhibited a nonlinear relationship. Stability studies indicated the robustness of Sat-Type III-SEDDS, when stored at 25 °C for 3 months. Overall, the manuscript documents the successful systematic development of SFN-loaded Sat-Type III-SEDDS with distinctly improved biopharmaceutical performance. Graphical abstract.
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Affiliation(s)
- Teenu Sharma
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, 160 014, India
| | - Atul Jain
- UGC-Centre of Excellence in Applications of Nanomaterials, Nanoparticles & Nanocomposites (Biomedical Sciences), Panjab University, Chandigarh, 160014, India
| | - Ranjot Kaur
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, 160 014, India
| | - Sumant Saini
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, 160 014, India
| | - O P Katare
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, 160 014, India
| | - Bhupinder Singh
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, 160 014, India. .,UGC-Centre of Excellence in Applications of Nanomaterials, Nanoparticles & Nanocomposites (Biomedical Sciences), Panjab University, Chandigarh, 160014, India.
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Kaur R, Gorki V, Katare OP, Dhingra N, Chauhan M, Kaur R, Nirmalan N, Singh B. Improved biopharmaceutical attributes of lumefantrine using choline mimicking drug delivery system: preclinical investigation on NK-65 P.berghei murine model. Expert Opin Drug Deliv 2021; 18:1533-1552. [PMID: 34176411 DOI: 10.1080/17425247.2021.1946512] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND Lumefantrine (LMF) is first-line antimalarial drug, possesses activity against almost all human malarial parasites, but the in vivo activity of this molecule gets thwarted due to its low and inconsistent oral bioavailability (i.e. 4-12%) owing to poor biopharmaceutical attributes. METHODS Lumefantrine phospholipid complex (LMF-PC) was prepared by rota-evaporation method following job's plot technique for the selection of apt stoichiometric ratios. Docking studies were carried out to determine the possible interaction(s) of LMF with phosphatidylcholine analogue. Comparative in vitro physiochemical, solid-state characterization, MTT assay, dose-response on P. falciparum, in vivo efficacy studies including pharmacokinetic and chemosuppression on NK-65 P. berghei infected mice were carried out. RESULTS Aqueous solubility was distinctly improved (i.e. 345 times) with phospholipid complex of LMF. Cytotoxicity studies on Hela and fibroblast cell lines demonstrated safety of LMF-PC with selectivity indices of 4395 and 5139, respectively. IC50 value was reduced almost 2.5 folds. Significant enhancement in Cmax (3.3-folds) and AUC (2.7-folds) of rat plasma levels indicated notable pharmacokinetic superiority of LMF-PC over LMF suspension. Differential leukocytic count and cytokine assay delineated plausible immunoregulatory role of LMF-PC with nearly 98% chemosuppression and over 30 days of post-survival. CONCLUSION Superior antimalarial efficacy and survival time with full recovery of infected mice revealed through histopathological studies.
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Affiliation(s)
- Ripandeep Kaur
- UGC Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India.,School of Science, Engineering & Environment, University of Salford, Manchester, UK.,UGC-Centre of Excellence in Nano Applications (Biomedical Sciences), Panjab University, Chandigarh, India
| | - Varun Gorki
- Parasitology Laboratory, Department of Zoology, Panjab University, Chandigarh, India
| | - O P Katare
- UGC Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Neelima Dhingra
- UGC Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Monika Chauhan
- UGC Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Ranjot Kaur
- UGC Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Niroshini Nirmalan
- School of Science, Engineering & Environment, University of Salford, Manchester, UK
| | - Bhupinder Singh
- UGC Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India.,UGC-Centre of Excellence in Nano Applications (Biomedical Sciences), Panjab University, Chandigarh, India
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Kaur R, Saini S, Patel A, Sharma T, Kaur R, Katare OP, Singh B. Developing a Validated HPLC Method for Quantification of Ceftazidime Employing Analytical Quality by Design and Monte Carlo Simulations. J AOAC Int 2021; 104:620-632. [PMID: 33528003 DOI: 10.1093/jaoacint/qsab014] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 11/18/2020] [Accepted: 01/10/2021] [Indexed: 11/14/2022]
Abstract
BACKGROUND Ceftazidime, a third-generation cephalosporin, is widely used in the treatment of lung infections, often given as "off-label" nebulization. There is a need to develop a sensitive and robust analytical method to compute aerodynamic properties of ceftazidime following nebulization. OBJECTIVE The current study entails development of a simple, accurate, and sensitive HPLC method for ceftazidime estimation, employing the principles of analytical quality-by-design (AQbD) and Monte Carlo simulations. METHOD Selection of critical material attributes (CMAs) affecting method performance was accomplished by factor screening exercises. Subsequently, the influential CMAs, i.e., mobile phase ratio and flow rate, were systemically optimized using a face-centered cubic design for the chosen critical analytical attributes (CAAs). The factor relationship(s) between CMAs and CAAs was explored employing a 3 D-response surface and 2 D-contour plots, followed by numerical as well as graphical optimization, for establishing the optimal chromatographic conditions. The obtained method operable design region was validated by Monte Carlo simulations for defect rate analysis. RESULTS The optimized HPLC conditions for estimating ceftazidime were acetonitrile to acetic acid solution (75:25) as mobile phase at a flow rate of 0.7 mL/min, leading to Rt of 4.5 min and peak tailing ≤2. Validation studies, as per International Conference on Harmonization Q2(R1) guidance, demonstrated high sensitivity, accuracy, and efficiency of the developed analytical method with an LOD of 0.075 and LOQ of 0.227 µg/mL. Application of this chromatographic method was extrapolated for determining aerodynamic performance by nebulizing ceftazidime at a flow rate of 15 L/min using a next-generation impactor. The study indicated superior performance, sensitivity, and specificity of the developed analytical system for quantifying ceftazidime. CONCLUSIONS Application of an AQbD approach, coupled with Monte Carlo simulations, aided in developing a robust HPLC method for estimationof ceftazidime per se and on various stages of impactor. HIGHLIGHTS (i) QbD-enabled development of robust RP-HPLC method for ceftazidime quantification, (ii) Analytical method optimization employing Risk Assessment and Design of Experiments, (iii) Design space verification and defect rate analysis using Monte Carlo simulations, (iv) Chromatographic method validation as per ICH Q2 R1 guidelines and (v) Quantitative estimation of ceftazidime on various stages of impactor.
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Affiliation(s)
- Ranjot Kaur
- Panjab University, UGC Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Chandigarh, 160 014, India
| | - Sumant Saini
- Panjab University, UGC Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Chandigarh, 160 014, India
| | - Asha Patel
- Parul University, Parul Institute of Pharmacy, Vadodara, Gujarat, 391760, India
| | - Teenu Sharma
- Panjab University, UGC Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Chandigarh, 160 014, India
| | - Ripandeep Kaur
- Panjab University, UGC Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Chandigarh, 160 014, India
| | - O P Katare
- Panjab University, UGC Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Chandigarh, 160 014, India
| | - Bhupinder Singh
- Panjab University, UGC Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Chandigarh, 160 014, India.,Panjab University, UGC Centre of Excellence in Applications of Nanomaterials, Nanoparticles, and Nanocomposites (Biomedical Sciences), Chandigarh, 160 014, India
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Kaur R, Kumari A, Sharma G, Singh D, Kaur R. Biodegradation of endocrine disrupting chemicals benzyl butyl phthalate and dimethyl phthalate by Bacillus marisflavi RR014. J Appl Microbiol 2021; 131:1274-1288. [PMID: 33599367 DOI: 10.1111/jam.15045] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 02/05/2021] [Accepted: 02/15/2021] [Indexed: 11/27/2022]
Abstract
AIM The objectives of the present study were to explore the benzyl butyl phthalate (BBP) and dimethyl phthalate (DMP) degradation potential of Bacillus marisflavi RR014 isolated from the tap water of public toilet and also to optimize the phthalates degradation process using response surface methodology. METHODS AND RESULTS The minimal salt medium was used for the biodegradation analysis of phthalates. The quantification of phthalates and their intermediate metabolites identification were done by using UHPLC and LC-MS/MS respectively. The results revealed that B. marisflavi RR014 is capable of degrading both the phthalates under varying pH, temperature and salinity conditions. The formation of phthalic acid from the breakdown of BBP and DMP (500 mg l-1 ) in the medium was observed after 24 h. After 72 h, 61% of BBP and 98·9% of DMP in the medium was degraded as monitored by UHPLC. The identification of intermediate metabolites by LC-MS/MS revealed that hydrolysis of BBP and DMP produces phthalic acid. CONCLUSIONS The degradation rate of both the phthalates was increased as the parameters increased up to an optimum level. The three environmental factors (pH, temperature and salt concentration) strongly affect the rate of degradation of both the phthalates. The maximum degradation rate for both the phthalates was achieved at pH 7, temperature 35°C and salt concentration of 1% as observed from the central composite experimental design. SIGNIFICANCE AND IMPACT OF THE STUDY It is the first report on the phthalates biodegradation potential of B. marisflavi RR014 isolated from the tap water of public toilet. The bacterium is capable of degrading BBP and DMP under varying pH, temperature and salinity, therefore, ideal to treat the phthalate contaminated environments.
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Affiliation(s)
- R Kaur
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - A Kumari
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - G Sharma
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - D Singh
- Department of Molecular Biology and Biochemistry, Guru Nanak Dev University, Amritsar, Punjab, India
| | - R Kaur
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
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Sharma T, Kaur Khurana R, Borges B, Kaur R, Katare O, Singh B. An HPTLC densitometric method for simultaneous quantification of sorafenib tosylate and chrysin: Analytical method development, validation and applications. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105821] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kaur R, Masisi K, Molaei M, Le K, Fischer G, Kobue-Lekalake R, Moghadasian MH. Anti-atherogenic properties of Kgengwe ( Citrullus lanatus) seed powder in low-density lipoprotein receptor knockout mice are mediated through beneficial alterations in inflammatory pathways. Appl Physiol Nutr Metab 2021; 46:169-177. [PMID: 32846097 DOI: 10.1139/apnm-2020-0015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Kgengwe fruits are commonly consumed in sub-Saharan countries. Recent reports indicated low coronary artery disease rates in those regions. To investigate anti-atherogenic properties and potential mechanisms of action of Kgengwe seed powder (KSP), male low-density lipoprotein receptor knockout (LDL-r-KO) mice were fed with an atherogenic diet supplemented with (treated, n = 10) or without (controls, n = 10) 10% (w/w) KSP for 20 weeks. Proximate analysis revealed that KSP contained 38% fibre and 15% lipids. KSP supplementation was not associated with significant changes in body weight gain rate, food intake, and plasma lipid levels. However, the average atherosclerotic lesion size in the aortic roots in the KSP-treated group was 58% smaller than that in the control group (0.26 vs 0.11 mm2, p < 0.05). This strong anti-atherogenic effect was associated with significant increases in the average plasma levels of certain cytokines such as IL-10 (6 vs 13 pg/mL, p < 0.05), GM-CSF (0.1 vs 0.2 pg/mL, p < 0.05), and EPO (7 vs 16 pg/mL, p < 0.05) along with reductions in the average levels of plasma MCP-1 (19 vs 14 pg/mL, p < 0.05) and MIP-2 (28 vs 13 pg/mL, p < 0.05). Except for relatively high levels of saturated fatty acids, KSP possesses balanced nutrient compositions with strong anti-atherogenic properties, which may be mediated through alterations in inflammatory pathways. Additional studies warrant confirmation and mechanism(s) of action of such effects. Novelty: Kgengwe seeds prevent atherogenesis in LDL-r-KO mice. Kgengwe seeds increase circulating levels of IL-10 and EPO. No reduction in plasma total cholesterol levels.
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Affiliation(s)
- R Kaur
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- The Canadian Centre for Agri-Food Research in Health and Medicine, St Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada
| | - K Masisi
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- The Canadian Centre for Agri-Food Research in Health and Medicine, St Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada
| | - M Molaei
- The Canadian Centre for Agri-Food Research in Health and Medicine, St Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada
| | - K Le
- The Canadian Centre for Agri-Food Research in Health and Medicine, St Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada
| | - G Fischer
- Department of Pathology, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB R3E 3P5, Canada
| | - R Kobue-Lekalake
- Department of Food Science and Technology, Botswana University of Agriculture and Natural Resources, Botswana
| | - M H Moghadasian
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- The Canadian Centre for Agri-Food Research in Health and Medicine, St Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada
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Kaur R, Gorki V, Singh G, Kaur R, Katare O, Nirmalan N, Singh B. Intranasal delivery of polymer-anchored lipid nanoconstructs of artemether-lumefantrine in Plasmodium berghei ANKA murine model. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2020.102114] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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20
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Kaur R, Dennison SR, Burrow AJ, Rudramurthy SM, Swami R, Gorki V, Katare OP, Kaushik A, Singh B, Singh KK. Nebulised surface-active hybrid nanoparticles of voriconazole for pulmonary Aspergillosis demonstrate clathrin-mediated cellular uptake, improved antifungal efficacy and lung retention. J Nanobiotechnology 2021; 19:19. [PMID: 33430888 PMCID: PMC7798018 DOI: 10.1186/s12951-020-00731-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 11/07/2020] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Incidence of pulmonary aspergillosis is rising worldwide, owing to an increased population of immunocompromised patients. Notable potential of the pulmonary route has been witnessed in antifungal delivery due to distinct advantages of direct lung targeting and first-pass evasion. The current research reports biomimetic surface-active lipid-polymer hybrid (LPH) nanoparticles (NPs) of voriconazole, employing lung-specific lipid, i.e., dipalmitoylphosphatidylcholine and natural biodegradable polymer, i.e., chitosan, to augment its pulmonary deposition and retention, following nebulization. RESULTS The developed nanosystem exhibited a particle size in the range of 228-255 nm and drug entrapment of 45-54.8%. Nebulized microdroplet characterization of NPs dispersion revealed a mean diameter of ≤ 5 μm, corroborating its deep lung deposition potential as determined by next-generation impactor studies. Biophysical interaction of LPH NPs with lipid-monolayers indicated their surface-active potential and ease of intercalation into the pulmonary surfactant membrane at the air-lung interface. Cellular viability and uptake studies demonstrated their cytocompatibility and time-and concentration-dependent uptake in lung-epithelial A549 and Calu-3 cells with clathrin-mediated internalization. Transepithelial electrical resistance experiments established their ability to penetrate tight airway Calu-3 monolayers. Antifungal studies on laboratory strains and clinical isolates depicted their superior efficacy against Aspergillus species. Pharmacokinetic studies revealed nearly 5-, 4- and threefolds enhancement in lung AUC, Tmax, and MRT values, construing significant drug access and retention in lungs. CONCLUSIONS Nebulized LPH NPs were observed as a promising solution to provide effective and safe therapy for the management of pulmonary aspergillosis infection with improved patient compliance and avoidance of systemic side-effects.
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Affiliation(s)
- Ranjot Kaur
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, 160 014, India
- School of Pharmacy and Biomedical Sciences, Faculty of Clinical and Biomedical Sciences, University of Central Lancashire, Preston, PR1 2HE, UK
| | - Sarah R Dennison
- School of Pharmacy and Biomedical Sciences, Faculty of Clinical and Biomedical Sciences, University of Central Lancashire, Preston, PR1 2HE, UK
| | - Andrea J Burrow
- School of Pharmacy and Biomedical Sciences, Faculty of Clinical and Biomedical Sciences, University of Central Lancashire, Preston, PR1 2HE, UK
| | | | - Rajan Swami
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, 160 014, India
| | - Varun Gorki
- Department of Zoology, Panjab University, Chandigarh, India, 160 014
| | - O P Katare
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, 160 014, India
| | - Anupama Kaushik
- Dr SSB University Institute Chem Engineering and Technology, Panjab University, Chandigarh, India, 160 014
| | - Bhupinder Singh
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, 160 014, India.
- UGC Centre for Excellence in Nano-Biomedical Applications, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160 014, India.
| | - Kamalinder K Singh
- School of Pharmacy and Biomedical Sciences, Faculty of Clinical and Biomedical Sciences, University of Central Lancashire, Preston, PR1 2HE, UK.
- UCLan Research Centre for Smarts Materials, University of Central Lancashire, Preston, PR1 2HE, UK.
- UCLan Research Centre for Drug Design and Development, University of Central Lancashire, Preston, PR1 2HE, UK.
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Kaur R, Balaini N, Sharma S, Sharma SK. Lafora body disease: a case of progressive myoclonic epilepsy. BMJ Case Rep 2020; 13:e236971. [PMID: 33370974 PMCID: PMC7757443 DOI: 10.1136/bcr-2020-236971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2020] [Indexed: 12/24/2022] Open
Abstract
Progressive myoclonic epilepsy (PME) is a progressive neurological disorder. Unfortunately, until now, no definitive curative treatment exists; however, it is of utmost importance to identify patients with PME. The underlying aetiology can be pinpointed if methodological clinical evaluation is performed, followed by subsequent genetic testing. We report a case of PME that was diagnosed as Lafora body disease. This case emphasises that, suspecting and identifying PME is important so as to start appropriate treatment and reduce the probability of morbidity and prognosticate the family.
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Affiliation(s)
- Ranjot Kaur
- Medicine, Indira Gandhi Medical College, Shimla, India
| | | | - Sudhir Sharma
- Neurology, Indira Gandhi Medical College, Shimla, India
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Singh P, Kaur R. Role of magnetic resonance imaging (MRI) in tuberculous meningitis (TBM). Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.1183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Cardoso F, Paluch-Shimon S, Senkus E, Curigliano G, Aapro MS, André F, Barrios CH, Bergh J, Bhattacharyya GS, Biganzoli L, Boyle F, Cardoso MJ, Carey LA, Cortés J, El Saghir NS, Elzayat M, Eniu A, Fallowfield L, Francis PA, Gelmon K, Gligorov J, Haidinger R, Harbeck N, Hu X, Kaufman B, Kaur R, Kiely BE, Kim SB, Lin NU, Mertz SA, Neciosup S, Offersen BV, Ohno S, Pagani O, Prat A, Penault-Llorca F, Rugo HS, Sledge GW, Thomssen C, Vorobiof DA, Wiseman T, Xu B, Norton L, Costa A, Winer EP. 5th ESO-ESMO international consensus guidelines for advanced breast cancer (ABC 5). Ann Oncol 2020; 31:1623-1649. [PMID: 32979513 PMCID: PMC7510449 DOI: 10.1016/j.annonc.2020.09.010] [Citation(s) in RCA: 654] [Impact Index Per Article: 163.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 09/15/2020] [Accepted: 09/16/2020] [Indexed: 01/09/2023] Open
Affiliation(s)
- F Cardoso
- Breast Unit, Champalimaud Clinical Centre/Champalimaud Foundation, Lisbon, Portugal.
| | - S Paluch-Shimon
- Sharett Division of Oncology, Hadassah University Hospital, Jerusalem, Israel
| | - E Senkus
- Department of Oncology and Radiotherapy, Medical University of Gdansk, Gdansk, Poland
| | - G Curigliano
- Department of Oncology and Hemato-Oncology, European Institute of Oncology, IRCCS, Division of Early Drug Development, University of Milan, Milan, Italy
| | - M S Aapro
- Breast Center, Clinique de Genolier, Genolier, Switzerland
| | - F André
- Department of Medical Oncology, Institut Gustave Roussy, Villejuif, France
| | - C H Barrios
- Latin American Cooperative Oncology Group (LACOG), Grupo Oncoclínicas, Porto Alegre, Brazil
| | - J Bergh
- Department of Oncology-Pathology, Karolinska Institute & University Hospital, Stockholm, Sweden
| | - G S Bhattacharyya
- Department of Medical Oncology, Salt Lake City Medical Centre, Kolkata, India
| | - L Biganzoli
- Department of Medical Oncology, Nuovo Ospedale di Prato - Istituto Toscano Tumori, Prato, Italy
| | - F Boyle
- The Pam McLean Centre, Royal North Shore Hospital, St Leonards, Australia
| | - M-J Cardoso
- Breast Unit, Champalimaud Clinical Centre/Champalimaud Foundation, Lisbon, Portugal; Nova Medical School, Lisbon, Portugal
| | - L A Carey
- Department of Hematology and Oncology, UNC Lineberger Comprehensive Cancer Center, Chapel Hill, USA
| | - J Cortés
- IOB Institute of Oncology, Quiron Group, Madrid & Barcelona, Spain; Department of Oncology, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - N S El Saghir
- Division of Hematology Oncology, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - M Elzayat
- Europa Donna, The European Breast Cancer Coalition, Milan, Italy
| | - A Eniu
- Interdisciplinary Oncology Service (SIC), Riviera-Chablais Hospital, Rennaz, Switzerland
| | - L Fallowfield
- SHORE-C, Brighton & Sussex Medical School, University of Sussex, Brighton, UK
| | - P A Francis
- Department of Medical Oncology, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - K Gelmon
- Medical Oncology Department, BC Cancer Agency, Vancouver, Canada
| | - J Gligorov
- Breast Cancer Expert Center, University Cancer Institute APHP, Sorbonne University, Paris, France
| | - R Haidinger
- Brustkrebs Deutschland e.V., Munich, Germany
| | - N Harbeck
- Breast Centre, Department of Obstetrics and Gynaecology, University of Munich (LMU), Munich, Germany
| | - X Hu
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - B Kaufman
- Department of Oncology, Sheba Medical Center, Ramat Gan, Israel
| | - R Kaur
- Breast Cancer Welfare Association Malaysia, Petaling Jaya, Malaysia
| | - B E Kiely
- NHMRC Clinical Trials Centre, Sydney Medical School, Sydney, Australia
| | - S-B Kim
- Department of Oncology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, South Korea
| | - N U Lin
- Susan Smith Center for Women's Cancers - Breast Oncology Center, Dana-Farber Cancer Institute, Boston, USA
| | - S A Mertz
- Metastatic Breast Cancer Network, Inverness, USA
| | - S Neciosup
- Department of Medical Oncology, National Institute of Neoplastic Diseases, Lima, Peru
| | - B V Offersen
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - S Ohno
- Breast Oncology Centre, Cancer Institute Hospital, Tokyo, Japan
| | - O Pagani
- Medical School, Geneva University Hospital, Geneva, Switzerland
| | - A Prat
- Department of Medical Oncology, Hospital Clinic of Barcelona, Barcelona, Spain; Translational Genomics and Targeted Therapies in Solid Tumors, IDIBAPS, Barcelona; Department of Medicine, University of Barcelona, Barcelona
| | - F Penault-Llorca
- Department of Biopathology, Centre Jean Perrin, Clermont-Ferrand, France; University Clermont Auvergne/INSERM U1240, Clermont-Ferrand, France
| | - H S Rugo
- Breast Oncology Clinical Trials Education, UCSF Helen Diller Family Comprehensive Cancer Center, San Francisco, USA
| | - G W Sledge
- Division of Oncology, Stanford School of Medicine, Stanford, USA
| | - C Thomssen
- Department of Gynaecology, Martin Luther University Halle-Wittenburg, Halle, Germany
| | - D A Vorobiof
- Oncology Research Unit, Belong.Life, Tel Aviv, Israel
| | - T Wiseman
- Department of Applied Health Research in Cancer Care, The Royal Marsden Hospital NHS Foundation Trust, London, UK
| | - B Xu
- Department of Medical Oncology, Cancer Hospital Chinese Academy of Medical Sciences, Beijing, China
| | - L Norton
- Breast Cancer Medicine Service, Memorial Sloan-Kettering Cancer Center, New York, USA
| | - A Costa
- European School of Oncology, Milan, Italy; European School of Oncology, Bellinzona, Switzerland
| | - E P Winer
- Susan Smith Center for Women's Cancers - Breast Oncology Center, Dana-Farber Cancer Institute, Boston, USA
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Kaur R, Tiwari SK. Identification and characterization of a halocin-producing haloarchaeon isolated from Pachpadra salt lake. Lett Appl Microbiol 2020; 71:620-626. [PMID: 32844475 DOI: 10.1111/lam.13377] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/15/2020] [Accepted: 08/15/2020] [Indexed: 01/06/2023]
Abstract
Haloarchaea are known to produce antimicrobial proteins, halocins which are generally stable at extreme conditions suggesting their potential biotechnological applications. Here, we report a halocin-producing haloarchaeon isolated from salt lake and identified as Haloferax larsenii HA4 using partial 16S rDNA sequence and biochemical properties. Whole-cell methanolysate showed ether-linked lipids, which is a characteristic feature of haloarchaea. Strain HA4 was able to grow at pH 6·0-10·0 and 15-30% NaCl. The growth response was normal but antimicrobial activity was detected only during the log-phase. Crude halocin HA4 was active in the pH range of pH 2·0-10·0 with stability up to 100°C. Cell-free supernatant (CFS) was also stable in different organic solvents and detergents tested. However, halocin activity was reduced after treatment with proteinase K suggesting the proteinaceous nature of the active compound. Concentrated CFS showed the presence of several proteins from 6·5-66 kDa but bioassay suggested ~14 kDa protein as halocin. Crude halocin preparation showed cytocidal activity against indicator strain, H. larsenii HA10 and inhibited the growth of other related strains such as H. larsenii HA3, HA8, HA9 and HA10.
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Affiliation(s)
- R Kaur
- Department of Genetics, Maharshi Dayanand University, Rohtak, Haryana, India
| | - S K Tiwari
- Department of Genetics, Maharshi Dayanand University, Rohtak, Haryana, India
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Kumar P, Mahajan P, Kaur R, Gautam S. Nanotechnology and its challenges in the food sector: a review. Mater Today Chem 2020; 17:100332. [PMID: 32835156 PMCID: PMC7386856 DOI: 10.1016/j.mtchem.2020.100332] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 06/29/2020] [Accepted: 07/01/2020] [Indexed: 05/05/2023]
Abstract
Antibacterial activity of nanoparticles has received significant attention worldwide because of their great physical and chemical stability, excellent magnetic properties, and large lattice constant values. These properties are predominate in the food science for enhancing the overall quality, shelf life, taste, flavor, process-ability, etc., of the food. Nanoparticles exhibit attractive antibacterial activity due to their increased specific surface area leading to enhanced surface reactivity. When nanoparticles are suspended in the biological culture, they encounter various biological interfaces, resulting from the presence of cellular moieties like DNA, proteins, lipids, polysaccharides, etc., which helps antibacterial properties in many ways. This paper reviews different methods used for the synthesis of nanoparticles but is specially focusing on the green synthesis methods owing to its non-toxic nature towards the environment. This review highlights their antibacterial application mainly in the food sector in the form of food-nanosensors, food-packaging, and food-additives. The possible mechanism of nanoparticles for their antibacterial behavior underlying the interaction of nano-particles with bacteria, (i) excessive ROS generation including hydrogen peroxide (H2O2), OH- (hydroxyl radicals), and O- 2 2 (peroxide); and (ii) precipitation of nano-particles on the bacterial exterior; which, disrupts the cellular activities, resulting in membranes disturbance. All these phenomena results in the inhibition of bacterial growth. Along with this, their current application and future perspectives in the food sector are also discussed. Nanoparticles help in destroying not only pathogens but also deadly fungi and viruses. Most importantly it is required to focus more on the crop processing and its containment to stop the post-harvesting loss. So, nanoparticles can act as a smart weapon towards the sustainable move.
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Affiliation(s)
- P Kumar
- Advanced Functional Materials Lab., Dr. S.S. Bhatnagar University Institute of Chemical Engineering & Technology, Panjab University, Chandigarh, 160 014, India
| | - P Mahajan
- Advanced Functional Materials Lab., Dr. S.S. Bhatnagar University Institute of Chemical Engineering & Technology, Panjab University, Chandigarh, 160 014, India
| | - R Kaur
- Advanced Functional Materials Lab., Dr. S.S. Bhatnagar University Institute of Chemical Engineering & Technology, Panjab University, Chandigarh, 160 014, India
| | - S Gautam
- Advanced Functional Materials Lab., Dr. S.S. Bhatnagar University Institute of Chemical Engineering & Technology, Panjab University, Chandigarh, 160 014, India
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Singh B, Sharma T, Saini S, Kaur R, Jain A, Raza K, Beg S. Systematic Development of Drug Nanocargos Using Formulation by Design (FbD): An Updated Overview. Crit Rev Ther Drug Carrier Syst 2020; 37:229-269. [PMID: 32749139 DOI: 10.1615/critrevtherdrugcarriersyst.2020032040] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Nanostructured drug delivery formulations have lately gained enormous attention, contributing to their systematic development. Issuance of quality by design (QbD) guidelines by ICH, FDA, and other federal agencies, in this regard, has notably influenced the overall development of drug products, enabling holistic product and process understanding. Owing to the applicability of QbD paradigms, a science lately christened as formulation by design (FbD) has been dedicated exclusively to QbD-enabled drug product development. Consisting of the principal elements of design of experiments (DoE), quality risk management (QRM), and QbD-enabled product comprehension as the fundamental tools in the implementation of FbD, a variety of drug nanocargos have been successfully developed with FbD paradigms and reported in the literature. FbD aims to produce novel and advanced systems utilizing nominal resources of development time, work effort, and money. A systematic FbD approach envisions the entire developmental path through pivotal milestones of risk assessment, factor screening and optimization (both using appropriate experimental designs), multivariate statistical and optimum search tools, along with response surface modeling, usually employing suitable computer software. The design space is one of the fundamental elements of FbD providing the most sought-after regulatory flexibility to pharma companies, postapproval. The present paper provides a bird's eye view of the fundamental aspects of FbD terminology, methodology, and applications in the development of a wide range of nanocargos, as well as a discussion of trends from both technological and regulatory perspectives.
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Affiliation(s)
- Bhupinder Singh
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, India 160014; UGC-Centre of Excellence in Applications of Nanomaterials, Nanoparticles and Nanocomposites (Biomedical Sciences), Panjab University, Chandigarh, India 160014
| | - Teenu Sharma
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, India 160014
| | - Sumant Saini
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, India 160014
| | - Ranjot Kaur
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, India 160014; School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston PR1 2HE, United Kingdom
| | - Atul Jain
- UGC-Centre of Excellence in Applications of Nanomaterials, Nanoparticles and Nanocomposites (Biomedical Sciences), Panjab University, Chandigarh, India 160014
| | - Kaisar Raza
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandar Sindri, Distt. Ajmer, Rajasthan, India 305 817
| | - Sarwar Beg
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India 110062
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Saini S, Sharma T, Patel A, Kaur R, Tripathi SK, Katare OP, Singh B. QbD-steered development and validation of an RP-HPLC method for quantification of ferulic acid: Rational application of chemometric tools. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1155:122300. [PMID: 32771967 DOI: 10.1016/j.jchromb.2020.122300] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 07/04/2020] [Accepted: 07/30/2020] [Indexed: 12/26/2022]
Abstract
The present work describes the systematic development of a simple, rapid, sensitive, robust, effective and cost-effective reversed-phase high performance liquid chromatographic method for quantitative analysis of ferulic acid using analytical quality by design paradigms. Initially, apt wavelength for the analysis of ferulic acid was selected employing principal component analysis as the chemometric tool. An Ishikawa fishbone diagram was constructed to delineate various plausible variables influencing analytical target profile, viz. peak area, theoretical plate count, retention time and peak tailing as the critical analytical attributes. Risk assessment using risk estimation matrix and factor screening studies employing Taguchi design aided in demarcating two critical method parameters, viz. mobile phase ratio and flow rate affecting critical analytical attributes. Subsequently, the optimum operational conditions of the liquid chromatographic method were delineated using face-centred composite design. Multicollinearity among the chosen factors for optimization was analyzed by the magnitude of variance inflation factor optimized analytical design space, providing optimum method performance, was earmarked using numerical and graphical optimization and corroborated using Monte Carlo simulations. Validation, as per the ICH Q2(R1) guidelines, ratified the efficiency and sensitivity of the developed novel analytical method of ferulic acid in the mobile phase and the human plasma matrix. The optimal method used a mobile phase, comprising of acetonitrile: water (47:53% v/v, pH adjusted to 3.0 with glacial acetic acid), at a flow rate of 0.8 mL·min-1, at a λmax of 322 nm using a C18 column. Use of principal component analysis unearthed the suitable wavelength for analysis, while analytical quality by design approach, along with Monte Carlo simulations, facilitated the identification of influential variables in obtaining the "best plausible" validated chromatographic solution for efficient quantification of ferulic acid.
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Affiliation(s)
- Sumant Saini
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh 160014, India
| | - Teenu Sharma
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh 160014, India
| | - Asha Patel
- Parul Institute of Pharmacy, Parul University, Vadodara, Gujarat 391760, India
| | - Ranjot Kaur
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh 160014, India
| | - S K Tripathi
- Department of Physics, Panjab University, Chandigarh 160014, India
| | - O P Katare
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh 160014, India
| | - Bhupinder Singh
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh 160014, India.
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Mahajan P, Koushal V, Chhabra R, Dhaliwal N, Pandey N, Kaur R. Effectiveness of Interventional Strategies in Modulating Knowledge and Attitude of Health Care Professionals for Promoting Organ Donation: A Study in Tertiary Care Public Hospital of North India. Ann Neurosci 2020; 27:242-256. [PMID: 34556965 PMCID: PMC8455009 DOI: 10.1177/0972753121990238] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Objective: To evaluate the impact of interventional “educational module” on knowledge and attitude regarding organ donation amongst resident doctors and nurses in the Institute of National Importance. Study Design: Interventional and prospective. Methods: We devised an interactive educational module covering various aspects of organ donation through a series of audiovisual lectures and information booklets. Resident doctors and nurses posted in those areas of the 1948-bedded Postgraduate Institute of Medical Education and Research (PGIMER), where head injury patients were treated and were subject to intervention using this module. The pre and postinterventional scores of their knowledge and attitude regarding organ donation were compared to find out impact of the intervention. Results: A total of 242 nurses and 87 resident doctors participated in this research. Higher knowledge score was observed preintervention amongst doctors as compared to nurses. Significant improvement was seen in total knowledge scores of both groups postintervention. Doctors had better scores for the “concept of organ donation,” while nurses were more familiar with “procedures and protocols.” Both had low knowledge about “clinical criteria for brain death” and “legal issues” preintervention which improved significantly postintervention. The positive impact of intervention was also observed on attitude in both categories. A significant impact of intervention was observed on overall propensity of doctors and nurses to promote organ donation, for pledging their own organs and for counseling of the patient/attendants on this cause. Conclusion: Scientifically designed educational modules have a promising role in improving awareness and attitude of health care professionals regarding organ donation and their propensity to be prospective donors, effective counselors, and advocates of organ donation.
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Affiliation(s)
- Pranay Mahajan
- Department of Hospital Administration, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - V Koushal
- Department of Hospital Administration, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - R Chhabra
- Department of Neurosurgery, PGIMER, Chandigarh, India
| | - N Dhaliwal
- Department of Hospital Administration, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - N Pandey
- Department of Hospital Administration, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - R Kaur
- Transplant Coordinator, PGIMER, Chandigarh, India
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Regan AK, Arnaout A, Marinovich L, Marston C, Patino I, Kaur R, Gebremedhin A, Pereira G. Interpregnancy interval and risk of perinatal death: a systematic review and meta-analysis. BJOG 2020; 127:1470-1479. [PMID: 32378279 DOI: 10.1111/1471-0528.16303] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2020] [Indexed: 12/28/2022]
Abstract
BACKGROUND Interpregnancy interval (IPI) <6 months is a potentially modifiable risk factor for adverse perinatal health outcomes. OBJECTIVE This systematic review evaluated the international literature on the risk of perinatal death associated with IPI. SEARCH STRATEGY Two independent reviewers screened titles and abstracts identified in MEDLINE, EMBASE and Scopus from inception to 4 April 2019 (Prospero Registration #CRD42018092792). SELECTION CRITERIA Studies were included if they provided a description of IPI measurement and perinatal death, including stillbirth and neonatal death. DATA COLLECTION AND ANALYSIS A narrative review was performed for all included studies. Random effects meta-analysis was used to compare unadjusted odds of perinatal death associated with IPI <6 months and IPI ≥6 months. Analyses were performed by outcome of the preceding pregnancy and study location. MAIN RESULTS Of the 624 unique articles identified, 26 met the inclusion criteria. The pooled unadjusted odds ratio of perinatal death for IPI <6 months was 1.34 (95% CI 1.17-1.53) following a previous live birth, 0.85 (95% CI 0.73-0.99) following a previous miscarriage and 1.07 (95% CI 0.84-1.36) following a previous stillbirth compared with IPI ≥6 months. However, few high-income country studies reported an association after adjustment. Fewer studies evaluated the impact of long IPI on perinatal death and what evidence was available showed mixed results. CONCLUSIONS Results suggest a possible association between short IPI and risk of perinatal death following a live birth, particularly in low- to middle-income countries. TWEETABLE ABSTRACT Short IPI <6 months after a live birth was associated with greater risk of perinatal death than IPI ≥6 months.
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Affiliation(s)
- A K Regan
- School of Public Health, Texas A&M University, College Station, TX, USA.,School of Public Health, Curtin University, Perth, WA, Australia
| | - A Arnaout
- School of Public Health, Curtin University, Perth, WA, Australia
| | - L Marinovich
- School of Public Health, Curtin University, Perth, WA, Australia
| | - C Marston
- London School of Tropical Medicine and Hygiene, London, UK
| | - I Patino
- School of Public Health, Texas A&M University, College Station, TX, USA
| | - R Kaur
- School of Public Health, Texas A&M University, College Station, TX, USA
| | - A Gebremedhin
- School of Public Health, Curtin University, Perth, WA, Australia
| | - G Pereira
- School of Public Health, Curtin University, Perth, WA, Australia.,Centre for Fertility and Health, Norwegian Public Health Institute, Oslo, Norway
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Agarwal S, Kaur R, Nehra A. Sagittal Spinopelvic Alignment: Effect of Posture. Semin Musculoskelet Radiol 2020. [DOI: 10.1055/s-0040-1722500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Yanes T, Kaur R, Meiser B, Scheepers-Joynt M, McInerny S, Barlow-Stewart K, Antill Y, Salmon L, Smyth C, James PA, Young MA. Women’s responses and understanding of polygenic breast cancer risk information. Fam Cancer 2020; 19:297-306. [DOI: 10.1007/s10689-020-00185-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Abstract
The market for functional foods, fortified with added nutrients such as minerals, vitamins, micronutrients, antioxidants and fibers, is on the rise. In this review, we discuss the concept and nature of functional foods, the constituents or ingredients that are commonly used to fortify these foods, and the purpose of fortification. Finally, the review surveys consumers� attitudes toward functional foods and their importance to help their development and marketing.
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Affiliation(s)
- A Bakshi
- School of Humanities and Social Sciences, Thapar Institute of Engineering and Technology, Patiala 147004, India
| | - S Chhabra
- School of Humanities and Social Sciences, Thapar Institute of Engineering and Technology, Patiala 147004, India
| | - R Kaur
- School of Humanities and Social Sciences, Thapar Institute of Engineering and Technology, Patiala 147004, India
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Abstract
Pulmonary infections have long represented one of the major threats to humans. These vary from acute to chronic conditions, depending upon the underlying disease of the airways. Pulmonary aspergillosis (PMAP) has raised vital concerns in the immunocompromised patients. The fungal infection is difficult to diagnose in the early stages, often making the disease more complicated. Currently, three classes of antifungal agents are available on the market for the treatment of pulmonary infections. These agents are available in oral and intravenous forms only, which limits the availability of therapeutic concentrations of drug in the lungs for longer durations. Consequently, this leads to therapeutic failure and/or resistance of the organism(s) towards the antifungal agents because the optimum amount of drug does not reach the infection site. To combat the issues associated with the conventional regimens, inhalation of antifungal agents is gaining importance because administration to the lungs offers huge advantages of localized and targeted delivery. A wide range of inhalational devices such as nebulizers, dry powder inhalers, and metered dose inhalers are available on the market to deliver drug molecules to the lungs effectively. However, their clinical utility is limited to conditions such as asthma, chronic obstructive pulmonary disease, and cystic fibrosis only. For a few decades, inhalation therapy has also been gaining importance to treat infectious diseases such as tuberculosis and aspergillosis, though more research efforts are required to make the transition from bench to bedside. The current review provides an explicit account of the potential role of inhalation drug delivery in PMAP.
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Affiliation(s)
- Ranjot Kaur
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, India 160014; School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston PR1 2HE, United Kingdom
| | - Ripandeep Kaur
- UGC Centre of Excellence in Applications of Nanomaterials, Nanoparticles and Nanocomposites (Biomedical Sciences), Panjab University, Chandigarh, India 160014
| | - Charan Singh
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, India 160014
| | - Shahdeep Kaur
- UGC Centre of Excellence in Applications of Nanomaterials, Nanoparticles and Nanocomposites (Biomedical Sciences), Panjab University, Chandigarh, India 160014
| | - Amit K Goyal
- Institute of Research and Development, Gujarat Forensic Science University, Gandhinagar, Gujarat, India 382007
| | - Kamalinder K Singh
- School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston PR1 2HE, United Kingdom
| | - Bhupinder Singh
- University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, India 160014; UGC Centre of Excellence in Applications of Nanomaterials, Nanoparticles and Nanocomposites (Biomedical Sciences), Panjab University, Chandigarh, India 160014
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Abstract
Anxiety is a psychiatric disorder with unknown neurobiology; however, neurotransmitters like gamma-amino butyric acid, norepinephrine and serotonin (5-HT) play crucial roles in mediating anxiety. Present drug modules pose dependence risk to the patient; hence, there is a great need to develop complementary therapies to fight this disorder. Aromatherapy has also been employed in ancient times for a number of mental disorders. Mahamrituanjay Mantra, Om triambkum yajamahe, sughandhim puushtivardhanam, urvarukmev vandhanaat, mrityu mokshay mamritaat!!!!, the part of veda enlightens that aroma gives rise to good health (sughandhim puushtivardhanam). Hawan is a religious practice recommended for mental peace. Hawan is a process in which special herbs are offered in the fire of medicinal woods ignited in a specially designed fire pit. Analysis of literature demonstrates that the components of Hawan are having a number of volatile oils that are specifically useful for prevention and treatment of anxiety through some mechanism of action. Due to high temperature of fire, the vapors of these oils from herbs enter into the central nervous system through nasal route. As per modern science and ancient texts on medicine, nasal drug delivery systems are the best for the diseases related to brain and head. The routine of performing Hawan might keep the threshold value of the therapeutic components in the body and help in preventing anxiety. In the present manuscript, authors highlight and integrate the modern and ancient concepts for treatment and prevention of anxiety through scientific evidences.
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Affiliation(s)
- R K Romana
- University Centre of Excellence in Research, Baba Farid University of Health Sciences (BFUHS), Faridkot, 151203, India
| | - A Sharma
- Department of Psychiatric, Government Medical College, Faridkot, India
| | - V Gupta
- University Centre of Excellence in Research, Baba Farid University of Health Sciences (BFUHS), Faridkot, 151203, India
| | - R Kaur
- University Centre of Excellence in Research, Baba Farid University of Health Sciences (BFUHS), Faridkot, 151203, India
| | - S Kumar
- National Institute of Ayurvedic Pharmaceutical Research, CCRAS, Patiala, India
| | - P Bansal
- University Centre of Excellence in Research, Baba Farid University of Health Sciences (BFUHS), Faridkot, 151203, India.
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Kaur R, Kaushik A, Singh KK, Katare OP, Singh B. An Efficient and Cost-Effective Nose-Only Inhalational Chamber for Rodents: Design, Optimization and Validation. AAPS PharmSciTech 2020; 21:82. [PMID: 31989357 DOI: 10.1208/s12249-019-1608-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 12/11/2019] [Indexed: 11/30/2022] Open
Abstract
The mainstay treatment of pulmonary disorders lies around the direct drug targeting to the lungs using a nebulizer, metered-dose inhaler, or dry powder inhaler. Only few inhalers are available in the market that could be used for inhalational drug delivery in rodents. However, the available rodent inhalers invariably require high cost and maintenance, which limits their use at laboratory scale. The present work, therefore, was undertaken to develop a simple, reliable, and cost-effective nose-only inhalation chamber with holding capacity of three mice at a time. The nebulized air passes directly and continuously from the central chamber to mouthpiece and maintains an aerosol cloud for rodents to inhale. Laser diffraction analysis indicated volume mean diameter of 4.02 ± 0.30 μm, and the next-generation impactor studies, however, revealed mean mass aerodynamic diameter of 3.40 ± 0.27 μm, respectively. An amount of 2.05 ± 0.20 mg of voriconazole (VRC) was available for inhalation at each delivery port of the inhaler. In vivo studies indicated the deposition of 76.12 ± 19.50 μg of VRC in the mice lungs when nebulized for a period of 20 min. Overall, the developed nose-only inhalation chamber offers a reliable means of generating aerosols and successfully exposing mice to nebulization.
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Kaur R, Kaur J, Kaur M, Kalotra V, Chadha P, Kaur A, Kaur A. An endophytic Penicillium oxalicum isolated from Citrus limon possesses antioxidant and genoprotective potential. J Appl Microbiol 2020; 128:1400-1413. [PMID: 31841255 DOI: 10.1111/jam.14553] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 08/20/2019] [Accepted: 12/12/2019] [Indexed: 01/29/2023]
Abstract
AIMS This study aimed at isolating endophytic fungi from Citrus limon (L.) possessing antioxidative and genoprotective potential. METHODS AND RESULTS Endophytic fungi were screened for antioxidant activity using 2,2-diphenyl,1-picryl hydrazyl radical scavenging assay and maximum activity (79·70%) was exhibited by culture MP1 identified to be Penicillium oxalicum on the basis of morphological and molecular characteristics. The ethyl acetate extract of MP1 was subjected to silica column chromatography followed by LH 20 column chromatography for purification of active metabolites. The partially purified active fraction of P. oxalicum MP1 possessed good antioxidant activity as detected using various assays. It also exhibited a strong DNA damage protection potential on pUC19 plasmid DNA treated with Fenton reagent. On exposure to active fraction of MP1 significant reduction (P < 0·05) in nuclear deformities (like nuclear buds, micronuclei, nuclear ridges and binucleated cells) was observed in human lymphocytes pretreated with a toxic concentration of H2 O2 . In vivo genoprotectivity studies were conducted in fresh water fish Channa punctatus pretreated with a damaging compound 4-nonyl phenol. The active fraction of P. oxalicum MP1 caused a reduction of 94·7 and 66·60% in micronuclei and aberrant cell formation, respectively. A significant reduction (P < 0·05) in tail length and tail DNA parameters was also observed in comet assay. CONCLUSION The endophytic P. oxalicum isolated in this study has the potential to produce metabolites possessing antioxidant and genoprotective activities. SIGNIFICANCE AND IMPACT OF THE STUDY The isolated culture can be exploited in the field of therapeutics by virtue of its in vitro and in vivo genoprotective potential.
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Affiliation(s)
- R Kaur
- Department of Microbiology, Guru Nanak Dev University, Amritsar, Punjab, India
| | - J Kaur
- Department of Microbiology, Guru Nanak Dev University, Amritsar, Punjab, India
| | - M Kaur
- Department of Zoology, Guru Nanak Dev University, Amritsar, Punjab, India
| | - V Kalotra
- Department of Human Genetics, Guru Nanak Dev University, Amritsar, Punjab, India
| | - P Chadha
- Department of Zoology, Guru Nanak Dev University, Amritsar, Punjab, India
| | - A Kaur
- Department of Human Genetics, Guru Nanak Dev University, Amritsar, Punjab, India
| | - A Kaur
- Department of Microbiology, Guru Nanak Dev University, Amritsar, Punjab, India
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Leow AST, Sia CH, Tan BYQ, Kaur R, Sim HW, Yeo TC, Chan MYY, Richards MA, Tay ELW, Loh JPY. P263 Characterisation of patients with acute myocardial infarction complicated by left ventricular thrombus. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehz872.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
None
Background/Introduction
Left ventricular (LV) thrombus is a widely recognized complication of acute myocardial infarction (AMI). Limited data are available from South East Asian patients with this post-infarction complication nor on whether patients with non-ST segment elevation myocardial infarction (NSTEMI) or STEMI with associated LV thrombosis exhibit differing clinical characteristics and/or outcomes. Left Ventricular Ejection Fraction (LVEF) ≤ 40% is a recognized predictor of LV thrombus formation, but there is limited data on LV thrombus patients with EF > 40% or in NSTEMI patients.
Purpose
This study aims to investigate and compare the clinical characteristics, treatment and outcomes of post-AMI patients with LV thrombus formation, with a particular emphasis on those with EF ≤ 40% and in NSTEMI patients.
Methods
Among 5829 consecutive echocardiogram results containing the keyword "thrombus" from August 2006 to September 2017, we identified 289 post-AMI patients with acute LV thrombus formation. Demographics, treatment and outcome measures were analysed.
Results
Cardiovascular risk factors such as dyslipidaemia (54.0%) and hypertension (50.5%) were commonly present in post-AMI patients with LV thrombus. Mean LVEF was 33.0 ± 10.4%. The majority (68.0%) of patients received triple therapy and 59.5% achieved thrombus resolution. NSTEMI patients had greater number of co-morbidities including heart failure (p < 0.01), documented history of ischaemic heart disease preceding the AMI leading to thrombus formation (p < 0.01) and lower LVEF (28.3 ± 9.3% vs. 34.8 ± 10.3% , p < 0.01) compared with STEMI cases. On multivariate analysis, having a lower EF was a significant independent predictor of stroke (HR 0.96, 95% CI 0.93-1.00, p = 0.03) and all-cause mortality (HR 0.95, 95% CI 0.92-0.99, p < 0.01). The categories of STEMI and NSTEMI did not predict thrombus resolution, stroke events or all-cause mortality after adjustment.
Conclusion(s)
Post-AMI LV thrombus patients with NSTEMI and STEMI differed in terms of their co-morbidities in their demographics and co-morbidities but it was a lower EF that was associated with an increased risk of stroke and all-cause mortality. Further studies on this topic are required.
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Affiliation(s)
- A S T Leow
- National University of Singapore, Yong Loo Lin School of Medicine, Singapore, Singapore
| | - C H Sia
- National University Heart Centre, Department of Cardiology, Singapore, Singapore
| | - B Y Q Tan
- National University Hospital, Department of Medicine, Singapore, Singapore
| | - R Kaur
- National University Heart Centre, Department of Cardiology, Singapore, Singapore
| | - H W Sim
- National University Heart Centre, Department of Cardiology, Singapore, Singapore
| | - T C Yeo
- National University Heart Centre, Department of Cardiology, Singapore, Singapore
| | - M Y Y Chan
- National University Heart Centre, Department of Cardiology, Singapore, Singapore
| | - M A Richards
- National University Health System, Cardiovascular Research Institute, Singapore, Singapore
| | - E L W Tay
- National University Heart Centre, Department of Cardiology, Singapore, Singapore
| | - J P Y Loh
- National University Heart Centre, Department of Cardiology, Singapore, Singapore
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Donkervoort S, Sabouny R, Yun P, Gauquelin L, Chao KR, Hu Y, Al Khatib I, Töpf A, Mohassel P, Cummings BB, Kaur R, Saade D, Moore SA, Waddell LB, Farrar MA, Goodrich JK, Uapinyoying P, Chan SS, Javed A, Leach ME, Karachunski P, Dalton J, Medne L, Harper A, Thompson C, Thiffault I, Specht S, Lamont RE, Saunders C, Racher H, Bernier FP, Mowat D, Witting N, Vissing J, Hanson R, Coffman KA, Hainlen M, Parboosingh JS, Carnevale A, Yoon G, Schnur RE, Boycott KM, Mah JK, Straub V, Foley AR, Innes AM, Bönnemann CG, Shutt TE. MSTO1 mutations cause mtDNA depletion, manifesting as muscular dystrophy with cerebellar involvement. Acta Neuropathol 2019; 138:1013-1031. [PMID: 31463572 PMCID: PMC6851037 DOI: 10.1007/s00401-019-02059-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/25/2019] [Accepted: 08/08/2019] [Indexed: 01/12/2023]
Abstract
MSTO1 encodes a cytosolic mitochondrial fusion protein, misato homolog 1 or MSTO1. While the full genotype–phenotype spectrum remains to be explored, pathogenic variants in MSTO1 have recently been reported in a small number of patients presenting with a phenotype of cerebellar ataxia, congenital muscle involvement with histologic findings ranging from myopathic to dystrophic and pigmentary retinopathy. The proposed underlying pathogenic mechanism of MSTO1-related disease is suggestive of impaired mitochondrial fusion secondary to a loss of function of MSTO1. Disorders of mitochondrial fusion and fission have been shown to also lead to mitochondrial DNA (mtDNA) depletion, linking them to the mtDNA depletion syndromes, a clinically and genetically diverse class of mitochondrial diseases characterized by a reduction of cellular mtDNA content. However, the consequences of pathogenic variants in MSTO1 on mtDNA maintenance remain poorly understood. We present extensive phenotypic and genetic data from 12 independent families, including 15 new patients harbouring a broad array of bi-allelic MSTO1 pathogenic variants, and we provide functional characterization from seven MSTO1-related disease patient fibroblasts. Bi-allelic loss-of-function variants in MSTO1 manifest clinically with a remarkably consistent phenotype of childhood-onset muscular dystrophy, corticospinal tract dysfunction and early-onset non-progressive cerebellar atrophy. MSTO1 protein was not detectable in the cultured fibroblasts of all seven patients evaluated, suggesting that pathogenic variants result in a loss of protein expression and/or affect protein stability. Consistent with impaired mitochondrial fusion, mitochondrial networks in fibroblasts were found to be fragmented. Furthermore, all fibroblasts were found to have depletion of mtDNA ranging from 30 to 70% along with alterations to mtDNA nucleoids. Our data corroborate the role of MSTO1 as a mitochondrial fusion protein and highlight a previously unrecognized link to mtDNA regulation. As impaired mitochondrial fusion is a recognized cause of mtDNA depletion syndromes, this novel link to mtDNA depletion in patient fibroblasts suggests that MSTO1-deficiency should also be considered a mtDNA depletion syndrome. Thus, we provide mechanistic insight into the disease pathogenesis associated with MSTO1 mutations and further define the clinical spectrum and the natural history of MSTO1-related disease.
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Thrimawithana T, Kaur R, Ngo A, So B, Singh G. Stability of fish oil capsules in dose administration aids. Res Social Adm Pharm 2019. [DOI: 10.1016/j.sapharm.2019.03.096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kaur M, Chadha P, Kaur S, Kaur A, Kaur R, Yadav AK, Kaur R. Evaluation of genotoxic and cytotoxic effects of ethyl acetate extract of Aspergillus flavus on Spodoptera litura. J Appl Microbiol 2019; 126:881-893. [PMID: 30216609 DOI: 10.1111/jam.14105] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 08/28/2018] [Accepted: 09/03/2018] [Indexed: 01/31/2023]
Abstract
AIM Recent concerns about the possible adverse effects of agricultural chemicals on health and environment have generated a considerable interest in biological alternatives. This study aimed to test the insecticidal potential of fungus Aspergillus flavus and revealed its genotoxic and cytotoxic effects using Spodoptera litura (Fabricius) as a model. METHODS AND RESULTS The fungus was isolated from the surface of the dead insect and investigated for its insecticidal potential against S. litura by bioassay studies. Significant increase in mortality, prolonged development period and reduced adult emergence in S. litura were observed in larva fed on diet supplemented with fungal extract. In addition, fungus was also found to cause oxidative stress, DNA damage and cell death. Significantly higher percentages of necrotic cells and DNA damage were observed in larvae treated with fungal extract. Furthermore, DNA repair studies predicted the longevity of toxic effects induced by fungus. Phytochemical and ultra-high performance liquid chromatography studies revealed the presence of phenolic compounds in the extract and liquid chromatography-mass spectrometry indicated it to be a non-aflatoxin strain of A. flavus. Fungal extract was less toxic to mammalian cell lines as compared to cytotoxic drug doxorubicin (DOX) in the MTT assay. CONCLUSION The study highlights the insecticidal potential of A. flavus by revealing its genotoxicity and cytotoxicity causing potential. This is the first report showing the genotoxic and cytotoxic effects of the fungus A. flavus on S. litura. SIGNIFICANCE AND IMPACT OF THE STUDY The study provides a useful insight to explore microbial agents as biopesticides in order to reduce various environmental as well as human health problems due to synthetic pesticides.
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Affiliation(s)
- M Kaur
- Department of Zoology, Guru Nanak Dev University, Amritsar, India
| | - P Chadha
- Department of Zoology, Guru Nanak Dev University, Amritsar, India
| | - S Kaur
- Department of Zoology, Guru Nanak Dev University, Amritsar, India
| | - A Kaur
- Departments of Microbiology, Guru Nanak Dev University, Amritsar, India
| | - R Kaur
- Departments of Microbiology, Guru Nanak Dev University, Amritsar, India
| | - A K Yadav
- Department of Biotechnology, Guru Nanak Dev University, Amritsar, India
| | - R Kaur
- Department cum National Centre for Human Genome Studies and Research, Panjab University, Chandigarh, India
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41
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Saade D, Bharucha-Goebel D, Norato G, Foley A, Waite M, Jain M, Debs S, Vasavada R, Nichols C, Kaur R, Donkervoort S, Neuhaus S, Hu Y, Lehky T, Gray S, Fink M. CMT AND NEUROGENIC DISEASE. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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42
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Lim Z, Rajaram N, Song C, Kaur R, Taib NM, Muhamad M, Ong W, Schouwenburg M, See M, Teo SH, Saunders C, Yip C. Patient-Reported Outcome Measures Among Breast Cancer Survivors in Malaysia: A Comparative Study With Patients From High-Income Countries. J Glob Oncol 2018. [DOI: 10.1200/jgo.18.75100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background: Patient-reported outcome measures (PROMs) are essential for identifying how patients perceive the outcomes of their cancer treatment, and is the ultimate success of cancer care. Although a growing number of studies have focused on PROMs in high income countries (HICs), outcomes relevant to patients in developing countries are less understood. Furthermore, the lack of standardization in PROMs makes it difficult to interpret these data for research or quality monitoring. Aim: In this study, we compared the results of PROM measures between patients in Malaysia, a middle income country, and those in HICs, using standard PROMs questionnaires. We also explored the differences in perceived importance of patient reported outcomes within the multiracial Malaysian cohort. Methods: Breast cancer patients (n=1063) were recruited in hospitals serving suburban areas of Malaysia. Of these, 969 patients were eligible for analysis. The surveys were conducted through face-to-face interviews (68%) or were self-administered (30%). An outcome was considered important if it was scored between 7-9 on a 9-point Likert scale. We compared PROMs scores between Malaysian patients and data previously collected from patients in HICs using logistic regression models, adjusting for demographic and clinical characteristics. A two-step cluster analysis was conducted to explore differences in the perceived importance of PROMs between clusters of Malaysian patients. Results: Compared with 1777 patients from HICs, Malaysian patients were less likely to rate overall and recurrence free survival, as well as emotional, cognitive, social and sexual functioning as very important outcomes. Interestingly, more Malaysian women reported that pain (50% vs. 39%), breast symptoms (51% vs. 35%), and major complications (60% vs. 44%) were very important outcomes ( P < 0.001). Compared with young, married Malaysian women, the cluster of older married women (mean age of 57 vs. 52), who were less likely to have received breast reconstructive surgery (8.6% vs. 16.8%), was more likely to rate sexual functioning (32.8% vs. 25.0%, P = 0.036), body image (63.9% vs. 42.4%, P < 0.001), and satisfaction with the breast (50.7% vs. 37.0%, P = 0.011) as very important outcomes. Conclusion: The differences in breast cancer patient needs between and within populations should be considered carefully to better clinician-patient relationship, patient care and satisfaction and assess the outcomes of our cancer care. Future research is needed to find suitable targeted interventions to identify and address the diverse needs of breast cancer patients in low and middle income countries.
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Affiliation(s)
- Z.Y. Lim
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | - N. Rajaram
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | - C.V. Song
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | - R. Kaur
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | | | - M. Muhamad
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | - W.L. Ong
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | | | - M.H. See
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | - S.-H. Teo
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | - C. Saunders
- Cancer Research Malaysia, Subang Jaya, Malaysia
| | - C.H. Yip
- Cancer Research Malaysia, Subang Jaya, Malaysia
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43
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Donkervoort S, Hu Y, Shieh P, Koliwer J, Tsai L, Cummings B, Snyder M, Chao K, Kaur R, Bharucha-Goebel D, Iannaccone S, MacArthur D, Foley A, Schwake M, Bönnemann C. NEW GENES, FUNCTIONS AND BIOMARKERS. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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44
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Islam T, Musthaffa S, Hoong S, Harun F, Hassan A, Jamaris S, Din NA, Rahman Z, Mohamed K, Ho G, Kaur R, Taib N. Effectiveness of Breast Care Nurse Led Video Orientation Programme on Information and Navigation for Newly Diagnosed Breast Cancer Patients at University Malaya Medical Center, Malaysia. J Glob Oncol 2018. [DOI: 10.1200/jgo.18.60500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background: Advancement in medical treatment with wider treatment options have made breast cancer (BC) care more complex. Short consultation time with physicians, treatment complexities, patients' fears and poor coping skills at the time of diagnosis may affect patient´s decision that cause treatment delays and nonadherence. Main reasons for advance BC presentation in Malaysia are delay in taking treatment decision and poor breast health literacy on disease and treatment outcomes may contribute to nonadherence to treatments. To address this knowledge gap, a breast care nurse (BCN) led orientation video for new patients to navigate them through complex multimodal treatment processes. This audio-visual educational tool address multimodal treatments and its side effects and in addition navigating admission, discharge and follow-up, advice on diet and exercise to maintain a healthy life style during survivorship period was developed in layperson language in Malay, Mandarin and English. Aim: To assess the effectiveness of BCN led video orientation on the improvement of patient knowledge and satisfaction. Methods: A pilot study was carried out in 50 patients to assess the effectiveness of the video, and found that patients needed a face to face interaction to watch the video. Hence, a BCN led orientation was developed to use the video. A self-administered pre- and postsurvey on 246 newly diagnosed breast cancer patients in University Malaya Medical Center (UMMC) was performed to evaluate expectations, satisfactions and knowledge (a Likert scale response using items 4 number scale was used, 0 means “no knowledge” and 4 means “a great degree of knowledge”). The scoring was done before and after the video orientation was done. A Wilcoxon matched-paired signed-rank test was perform to analyze the changes in the scoring. Results: Among 247 patients, who received the BCN led video orientation program, 79.3% (n= 197) found that the video met or exceeded their expectations. 23.9% (n=59) and 56.3% (139) consecutively found the video very effective and effective in broadening their perspective on BC treatments. And 171 (69.2%) of them overall rated the video highly met their expectations. There were significant improvement in knowledge for treatment options for BC, mean scores (M=0.93 versus M=2.97) before and after watching the video ( P < 0.001). Similar findings were found in different types of operation for BC; procedure for admission in UMMC, information on chemotherapy; radiotherapy; hormone therapy and alternative medicine for BC. It also showed improved knowledge scores for healthy diet; physical activity after treatments and care of the arm after operation ( P < 0.001). Conclusion: Video-based information on treatments and navigating care through a BCN led service had effectively improved patients' knowledge and satisfaction. This approach can be used to educate cancer patients in a middle resource setting.
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Affiliation(s)
- T. Islam
- University of Malaya, Department of Surgery, Kuala Lumpur, Malaysia
| | - S. Musthaffa
- University of Malaya, Department of Surgery, Kuala Lumpur, Malaysia
| | - S.M. Hoong
- University of Malaya, Department of Surgery, Kuala Lumpur, Malaysia
| | - F. Harun
- University of Malaya, Department of Surgery, Kuala Lumpur, Malaysia
| | - A. Hassan
- University of Malaya, Department of Surgery, Kuala Lumpur, Malaysia
| | - S. Jamaris
- University of Malaya, Department of Surgery, Kuala Lumpur, Malaysia
| | - N. Abdullah Din
- University of Malaya, Department of Surgery, Kuala Lumpur, Malaysia
| | - Z. Rahman
- University of Malaya, Department of Surgery, Kuala Lumpur, Malaysia
| | - K.N. Mohamed
- University of Malaya, Department of Surgery, Kuala Lumpur, Malaysia
| | - G.F. Ho
- University of Malaya, Department of Surgery, Kuala Lumpur, Malaysia
| | - R. Kaur
- University of Malaya, Department of Surgery, Kuala Lumpur, Malaysia
| | - N.A. Taib
- University of Malaya, Department of Surgery, Kuala Lumpur, Malaysia
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45
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Kaur R. A tandem bio-chemo catalytic approach to the sustainable production of malic acid from glucose. N Biotechnol 2018. [DOI: 10.1016/j.nbt.2018.05.887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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46
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Kaur J, Kaur R, Datta R, Kaur S, Kaur A. Exploration of insecticidal potential of an alpha glucosidase enzyme inhibitor from an endophytic Exophiala spinifera. J Appl Microbiol 2018; 125:1455-1465. [PMID: 29877011 DOI: 10.1111/jam.13947] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 05/10/2018] [Accepted: 05/25/2018] [Indexed: 11/30/2022]
Abstract
AIM The present study aimed to isolate and screen endophytes from Trachyspermum ammi with the ability to inhibit alpha glucosidase enzyme and evaluate their insecticidal potential. METHODS AND RESULTS Endophytic fungi isolated from T. ammi were screened for alpha glucosidase inhibitory activity. Maximum inhibition (96%) was observed in an isolate AZ-9, identified to be Exophiala spinifera on morphological and molecular basis. Production of fungal metabolites was carried out in malt extract broth followed by extraction with ethyl acetate. Brown coloured gummy residue obtained after evaporation of ethyl acetate was partially soluble in water yielding white precipitates. The precipitate exhibiting α-glucosidase inhibitory activity was purified by repeated washing and centrifugation. The insecticidal activity of inhibitor was evaluated on Spodoptera litura (Fab.) by feeding this pest on diet amended with inhibitor. It resulted in significant larval mortality as well as deformities in emerging adults. A reduction in vivo digestive enzyme activity was also observed. Nutritional analysis revealed the toxic effect of AZ-9 inhibitor on various food utilization parameters of S. litura. A significant reduction was recorded in relative growth and consumption rate of S. litura. CONCLUSIONS This is the first report on production of an alpha glucosidase inhibitor from E. spinifera with insecticidal activity. SIGNIFICANCE AND IMPACT OF THE STUDY The study highlights the importance of endophytes in providing protection against insect pests to the host. It also suggests the insecticidal potential of alpha glucosidase inhibitor from E. spinifera against polyphagous pest S. litura.
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Affiliation(s)
- J Kaur
- Department of Microbiology, Guru Nanak Dev University, Amritsar, Punjab, India
| | - R Kaur
- Department of Microbiology, Guru Nanak Dev University, Amritsar, Punjab, India
| | - R Datta
- Department of Zoology, Guru Nanak Dev University, Amritsar, Punjab, India
| | - S Kaur
- Department of Zoology, Guru Nanak Dev University, Amritsar, Punjab, India
| | - A Kaur
- Department of Microbiology, Guru Nanak Dev University, Amritsar, Punjab, India
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47
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Kaur R, Panesar P, Singh R. Utilization of agro-industrial residues for the production of β-Galactosidase using fungal isolate under solid state fermentation conditions. Acta Alimentaria 2018. [DOI: 10.1556/066.2018.47.2.4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- R. Kaur
- Food Biotechnology Research Laboratory, Department of Food Engineering & Technology, Sant Longowal Institute of Engineering and Technology, Longowal-148106, Punjab. India
| | - P.S. Panesar
- Food Biotechnology Research Laboratory, Department of Food Engineering & Technology, Sant Longowal Institute of Engineering and Technology, Longowal-148106, Punjab. India
| | - R.S. Singh
- Department of Biotechnology, Punjabi University, Patiala 147 002 . India
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48
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Clark CEF, Kaur R, Millapan LO, Golder HM, Thomson PC, Horadagoda A, Islam MR, Kerrisk KL, Garcia SC. The effect of temperate or tropical pasture grazing state and grain-based concentrate allocation on dairy cattle production and behavior. J Dairy Sci 2018; 101:5454-5465. [PMID: 29550132 DOI: 10.3168/jds.2017-13388] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 02/06/2018] [Indexed: 11/19/2022]
Abstract
Grain-based concentrate (GBC) supplement is of high cost to dairy farmers as a feed source as opposed to grazed pasture. Milk production response to GBC is affected by the composition and nutritive value of the remainder of the diet, animal factors, and interactions between forage type and level of GBC. In grazing systems, dairy cattle encounter contrasting pasture states, primarily because the social structure of the herd affects the timing of when each animal accesses a paddock after milking as a result of a relatively consistent cow milking order. However, the effect of feed management, namely pasture state and GBC allocation, on dairy cattle production and behavior is unknown. We examined the effect of varying GBC allocation for dairy cattle grazing differing states of kikuyu grass (Pennisetum clandestinum, a tropical pasture species; experiment 1) and annual ryegrass (Lolium multiflorum L., a temperate pasture species; experiment 2) on dry matter intake, milk production and composition, and grazing behavior. For each experiment, 90 lactating dairy cattle were randomly allocated to 2 consistent (fresh-fresh and depleted-depleted) and 2 inconsistent (fresh-depleted and depleted-fresh pasture state treatments (defined as sequences of pasture state allocation for the morning and afternoon grazing events) and 3 GBC treatments [2.7, 5.4, and 8.1 kg of dry matter (DM)/cow per day], giving 12 treatment combinations for each experiment. The duration of each experiment was 14 d, with the first 7 d used as adaptation to treatment. In each experiment, 3 cattle were selected from each of the 12 pasture type × GBC treatment groups within the experimental herd to determine herbage intake and total DM digestibility using the n-alkanes method (n = 36). There was no interaction between kikuyu grass or ryegrass pasture state and GBC level for intake, digestibility, or milk yield or components. Dairy cattle offered fresh-fresh and depleted-fresh ryegrass produced 9% more milk yield, in line with greater pasture intakes, compared with fresh-depleted and depleted-depleted pasture states. Dairy cattle offered fresh-fresh kikuyu grass had 8% more milk yield and 14% more milk protein yield than other pastures states, but there was no effect of pasture state on milk composition. Milk yield increased with GBC level for both pasture species (∼0.7-0.8 kg of milk/kg of DM GBC) as GBC level increased from 2.5 to 5.4 kg of DM/cow per day. There was a poor response (0.3 kg of milk/kg of DM GBC), and no response, when GBC levels increased from 5.4 to 8.1 kg of DM/cow per day for kikuyu grass and ryegrass, respectively, in line with pasture DMD. Time spent grazing, lying, and ruminating were not associated with kikuyu grass pasture state, GBC, or their interaction. Despite this, there was a linear increase in grazing time in the afternoon coinciding with a linear decrease in lying and rumination time for both kikuyu grass and ryegrass pasture. Together these findings reveal the effect of pasture state and GBC allocation on dairy cattle production and behavior. Tailoring GBC allocation to the state of pasture accessed by cattle appears unwarranted, but there is an opportunity to alter the timing of pasture access to increase herd-level milk production efficiency.
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Affiliation(s)
- C E F Clark
- Dairy Science Group, Sydney Institute of Agriculture, School of Life and Environmental Sciences, Faculty of Science, University of Sydney, Camden, NSW 2570, Australia.
| | - R Kaur
- Dairy Science Group, Sydney Institute of Agriculture, School of Life and Environmental Sciences, Faculty of Science, University of Sydney, Camden, NSW 2570, Australia
| | - L O Millapan
- Department of Animal Production, Faculty of Agronomy, University of Buenos Aires, Buenos Aires 1417, Argentina
| | | | - P C Thomson
- Dairy Science Group, Sydney Institute of Agriculture, School of Life and Environmental Sciences, Faculty of Science, University of Sydney, Camden, NSW 2570, Australia
| | - A Horadagoda
- Dairy Science Group, Sydney Institute of Agriculture, School of Life and Environmental Sciences, Faculty of Science, University of Sydney, Camden, NSW 2570, Australia
| | - M R Islam
- Dairy Science Group, Sydney Institute of Agriculture, School of Life and Environmental Sciences, Faculty of Science, University of Sydney, Camden, NSW 2570, Australia
| | - K L Kerrisk
- Dairy Science Group, Sydney Institute of Agriculture, School of Life and Environmental Sciences, Faculty of Science, University of Sydney, Camden, NSW 2570, Australia
| | - S C Garcia
- Dairy Science Group, Sydney Institute of Agriculture, School of Life and Environmental Sciences, Faculty of Science, University of Sydney, Camden, NSW 2570, Australia
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Singh B, Khurana RK, Garg B, Saini S, Kaur R. Stimuli-Responsive Systems with Diverse Drug Delivery and Biomedical Applications: Recent Updates and Mechanistic Pathways. Crit Rev Ther Drug Carrier Syst 2017; 34:209-255. [PMID: 28845760 DOI: 10.1615/critrevtherdrugcarriersyst.2017017284] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
With the advent of "intelligent" polymeric systems, the use of stimuli-responsive in situ gelling systems has been revolutionized. These interesting polymers exist as free-flowing aqueous solutions before administration and undergo a phase transition to form a viscoelastic gel in a physiological environ through various stimuli such as temperature, pH, solvent, biochemical, magnetic, electric, ultrasound, and photo-polymerization. These smart polymers are endowed with numerous merits such as ease of administration, sustained release, reduced frequent administration with improved patient compliance, and targeted and spatial delivery of a drug with reduced frequency of side effects. Concerted efforts are being made to modify these polymers synthetically because they hold immense potential in various fields such as polymer chemistry, materials science, pharmaceutics, bioengineering medicine, and chemical engineering. In addition to novel drug delivery, these smart polymeric systems have exhibited tremendous applications in tissue engineering, regenerative biomedicine, molecular imprinting, cancer therapy, gene delivery, theranostic and other applications. The current review mainly focuses on the fundamental principles involved during in situ gelling, use of various "smart" drug-delivery formulation systems through diverse routes for their administration, as well as their well-documented biomedical applications. The pertinent literature, marketed formulations, and recent advances on these stimuli-responsive sol-gel-transforming systems are also discussed.
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Affiliation(s)
- Bhupinder Singh
- University Grants Commission Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India; University Grants Commission Centre of Excellence in Applications of Nanomaterials, Nanoparticles and Nanocomposites (Biomedical Sciences), Panjab University, Chandigarh, India
| | - Rajneet Kaur Khurana
- University Grants Commission Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Babita Garg
- University Grants Commission Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Sumant Saini
- University Grants Commission Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Ranjot Kaur
- Department of Pharmaceutics, ISF College of Pharmacy, Moga, Punjab, India; University Grants Commission Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
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50
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Singh G, Kaur R, Harikumar S. Possible role of ATP-sensitive potassium and MPTP channels in pharmacological postconditioning in mouse brain. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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