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Singh M, Alka, Shukla P, Wen ZH, Ko CY, Vinayagam R. TPGS-modified Chitosan Nanoparticles of EGFR Inhibitor: Physicochemical and In vitro Evaluation against HepG2 Cell Lines. Curr Drug Deliv 2024; 21:CDD-EPUB-137090. [PMID: 38204256 DOI: 10.2174/0115672018268315231206045504] [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] [Received: 07/11/2023] [Revised: 10/12/2023] [Accepted: 10/23/2023] [Indexed: 01/12/2024]
Abstract
BACKGROUND Gefitinib (GFN) is an Epithelial Growth Factor Receptor (EGFR) inhibitor, and Food and Drug Administration (FDA) has approved medication to treat lung cancer. However, this investigation aimed to produce and characterize Gefitinib (GFN)-loaded chitosan and soy lecithin nanoparticles (NPs) modified with D-α-tocopheryl polyethylene glycol 1000 succinate mono ester (TPGS) and assess their therapeutic potential against HepG2 liver cell lines. METHODS Chitosan, a cationic polymer with biocompatible and biodegradable properties, was combined with soy lecithin to develop the NPs loaded with GFN using a self-organizing ionic interaction methodology. RESULTS The entrapment efficiency and drug loading were found to be 59.04±4.63 to 87.37±3.82% and 33.46±3.76 to 49.50±4.35%, respectively, and results indicated the encapsulation of GEN in NPs. The pH of the formulations was observed between 4.48-4.62. Additionally, all the prepared NPs showed the size and PDI range of 89.2±15.9 nm to 799.2±35.8 nm and 0.179±0.065 to 0.455±0.097, respectively. The FTIR bands in optimized formulation (GFN-NP1) indicated that the drug might be contained within the NP's core. The SEM photograph revealed the spherical shape of NPs. The kinetic release model demonstrated the combination of diffusion and erosion mechanisms. The IC50 value of GFN and GFN-NP1 formulation against the HepG2 cell lines were determined and found to be 63.22±3.36 μg/ml and 45.80±2.53 μg/ml, respectively. DAPI and PI staining agents were used to detect nuclear morphology. CONCLUSION It was observed that the optimized GFN-NP1 formulation successfully internalized and inhibited the growth of HepG2 cells. Hence, it can be concluded that the prepared NPs can be a new therapeutic option for treating liver cancer.
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Affiliation(s)
- Mahendra Singh
- Department of Biotechnology, Institute of Biotechnology, Life and Applied Sciences, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Republic of Korea
| | - Alka
- Department of Pharmaceutical Sciences School of Health Sciences and Technology, UPES, Dehradun 248007, Uttarakhand, India
| | - Prashant Shukla
- Department of Pharmaceutical Sciences School of Health Sciences and Technology, UPES, Dehradun 248007, Uttarakhand, India
| | - Zhi-Hong Wen
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424
- Institute of BioPharmaceutical Sciences, National Sun Yat-sen University, Kaohsiung 804201, Taiwan
| | - Chou-Yuan Ko
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Ramachandran Vinayagam
- Department of Biotechnology, Institute of Biotechnology, Life and Applied Sciences, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Republic of Korea
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Vidya R, Khosla M, Baek K, Vinayagam R, Thekkinkattil D, Laws S, Douvetzemis S, Sircar T, Mullapudi A, Murphy J. Prophylactic Use of Negative Pressure Wound Therapy in High-risk Patients Undergoing Oncoplastic and Reconstructive Breast Surgery. Plast Reconstr Surg Glob Open 2023; 11:e5488. [PMID: 38115832 PMCID: PMC10730037 DOI: 10.1097/gox.0000000000005488] [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: 05/24/2023] [Accepted: 10/24/2023] [Indexed: 12/21/2023]
Abstract
Background Negative pressure wound therapy (NPWT) has emerged as an adjunct to reduce wound complication rates in many surgical domains. This study investigated the prophylactic use of PICO NPWT in high-risk patients undergoing oncoplastic and reconstructive breast surgery. Methods This was a prospective multicenter national audit. The findings were compared against Association of Breast Surgery/British Association of Plastic, Reconstructive and Aesthetic Surgeons (ABS/BAPRAS) Oncoplastic Guidelines for best practice. Results Data from 267 patients were included from seven centers. All patients had at least one high-risk factor for postoperative wound complications, whereas 78 patients (29.2%) had more than one. Thirty-six patients (13.5%) developed postoperative wound complications. An estimated 16 (6%) developed skin flap necrosis, wound dehiscence occurred in 13 patients (4.9%), and 15 patients (5.6%) developed postoperative wound infection. Eleven patients (4.1%) required further surgery due to wound complications. In total, 158 patients underwent mastectomy with immediate implant reconstruction. Postoperative wound complication rate was comparable in this subgroup (n = 22; 13.9%). Implant loss rate was 3.8%, which was within the 5% target mentioned in the ABS/BAPRAS guidelines. The estimated total cost saving was US $105,600 (£84,613) and US $395.50 (£316.90) per patient. Wound infection rate (5.6%) was much lower than the 25% reported by both iBRA study and National Mastectomy and Breast Reconstruction Audit. Conclusions Our study suggests that prophylactic use of NPWT in oncoplastic and reconstructive breast surgery results in low rates of wound-related complications with associated healthcare cost benefits in patients with high-risk factors for wound-related complications. However, a prospective randomized control trial is required.
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Affiliation(s)
- Raghavan Vidya
- From The Royal Wolverhampton NHS Trust, Wolverhampton, U.K
| | - Muskaan Khosla
- From The Royal Wolverhampton NHS Trust, Wolverhampton, U.K
| | - Kim Baek
- St. James’s University Hospital, Leeds, U.K
| | - R. Vinayagam
- Wirral Breast Centre, Clatterbridge Hospital, Wirral, U.K
| | | | | | | | - Tapan Sircar
- From The Royal Wolverhampton NHS Trust, Wolverhampton, U.K
| | | | - John Murphy
- Nightingale Breast Centre, Manchester University NHS Foundation Trust, Manchester
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Tiwari P, Srivastava Y, Sharma A, Vinayagam R. Antimicrobial Peptides: The Production of Novel Peptide-Based Therapeutics in Plant Systems. Life (Basel) 2023; 13:1875. [PMID: 37763279 PMCID: PMC10532476 DOI: 10.3390/life13091875] [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] [Received: 07/31/2023] [Revised: 08/25/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
The increased prevalence of antibiotic resistance is alarming and has a significant impact on the economies of emerging and underdeveloped nations. The redundancy of antibiotic discovery platforms (ADPs) and injudicious use of conventional antibiotics has severely impacted millions, across the globe. Potent antimicrobials from biological sources have been extensively explored as a ray of hope to counter the growing menace of antibiotic resistance in the population. Antimicrobial peptides (AMPs) are gaining momentum as powerful antimicrobial therapies to combat drug-resistant bacterial strains. The tremendous therapeutic potential of natural and synthesized AMPs as novel and potent antimicrobials is highlighted by their unique mode of action, as exemplified by multiple research initiatives. Recent advances and developments in antimicrobial discovery and research have increased our understanding of the structure, characteristics, and function of AMPs; nevertheless, knowledge gaps still need to be addressed before these therapeutic options can be fully exploited. This thematic article provides a comprehensive insight into the potential of AMPs as potent arsenals to counter drug-resistant pathogens, a historical overview and recent advances, and their efficient production in plants, defining novel upcoming trends in drug discovery and research. The advances in synthetic biology and plant-based expression systems for AMP production have defined new paradigms in the efficient production of potent antimicrobials in plant systems, a prospective approach to countering drug-resistant pathogens.
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Affiliation(s)
- Pragya Tiwari
- Department of Biotechnology, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Republic of Korea;
| | - Yashdeep Srivastava
- RR Institute of Modern Technology, Dr. A.P.J. Abdul Kalam Technical University, Sitapur Road, Lucknow 226201, Uttar Pradesh, India;
| | - Abhishek Sharma
- Department of Biotechnology and Bioengineering, Institute of Advanced Research, Koba Institutional Area, Gandhinagar 392426, Gujarat, India;
| | - Ramachandran Vinayagam
- Department of Biotechnology, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Republic of Korea;
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Vyshnavi AM H, Sankaran S, Namboori PK K, Venkidasamy B, Hirad AH, Alarfaj AA, Vinayagam R. In Silico Analysis of the Effect of Hydrastis canadensis on Controlling Breast Cancer. Medicina (Kaunas) 2023; 59:1412. [PMID: 37629702 PMCID: PMC10456556 DOI: 10.3390/medicina59081412] [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] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 07/19/2023] [Accepted: 07/25/2023] [Indexed: 08/27/2023]
Abstract
Background and Objectives: Breast cancer is a significant type of cancer among women worldwide. Studies have reported the anti-carcinogenic activity of Hydrastis Canadensis (Goldenseal) in cancer cell lines. Hydrastis Canadensis could help eliminate toxic substances due to its anti-cancer, anti-inflammatory, and other properties. The design phase includes the identification of potential and effective molecules through modern computational techniques. Objective: This work aims to study Hydrastis Canadensis's effect in controlling hormone-independent breast cancer through in-silico analysis. Materials and Methods: The preliminary screening of reported phytochemicals includes biomolecular networking. Identifying functionally relevant phytochemicals and the respective target mutations/genes leads to selecting 3D proteins of the desired mutations being considered the target. Interaction studies have been conducted using docking. The kinetic and thermodynamic stability of complexes was studied through molecular dynamic simulation and MM-PBSA/GBSA analysis. Pharmacodynamic and pharmacokinetic features have been predicted. The mechanism-wise screening, functional enrichment, and interactional studies suggest that canadaline and Riboflavin effectively interact with the target proteins. Results: Hydrastis Canadensis has been identified as the effective formulation containing all these constituents. The phytoconstituents; Riboflavin and Canadensis showed good interaction with the targets of hormone-independent breast cancer. The complexes were found to be kinetically and thermodynamically stable. Conclusions: Hydrastis Canadensis has been identified as effective in controlling 'hormone-independent or basal-like breast cancer' followed by 'hormone-dependent breast cancer: Luminal A' and Luminal B.
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Affiliation(s)
- Hima Vyshnavi AM
- Computational Chemistry Group (CCG), Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore 641112, India;
| | - Sathianarayanan Sankaran
- Department of Pharmaceutical Chemistry, NGSM Institute of Pharmaceutical Sciences, Nitte (Deemed to be University), Deralakatte, Mangaluru 575018, India;
| | - Krishnan Namboori PK
- Computational Chemistry Group (CCG), Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore 641112, India;
| | - Baskar Venkidasamy
- Department of Oral & Maxillofacial Surgery, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai 600077, India;
| | - Abdurahman Hajinur Hirad
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (A.H.H.); (A.A.A.)
| | - Abdullah A. Alarfaj
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (A.H.H.); (A.A.A.)
| | - Ramachandran Vinayagam
- Department of Biotechnology, Institute of Biotechnology, College of Life and Applied Sciences, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Gyeongbuk, Republic of Korea
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Kang SG, Lee GB, Vinayagam R, Do GS, Oh SY, Yang SJ, Kwon JB, Singh M. Anti-Inflammatory, Antioxidative, and Nitric Oxide-Scavenging Activities of a Quercetin Nanosuspension with Polyethylene Glycol in LPS-Induced RAW 264.7 Macrophages. Molecules 2022; 27:7432. [PMID: 36364256 PMCID: PMC9659305 DOI: 10.3390/molecules27217432] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 10/07/2022] [Revised: 10/26/2022] [Accepted: 10/27/2022] [Indexed: 07/30/2023] Open
Abstract
Quercetin (Qu) is a dietary antioxidant and a member of flavonoids in the plant polyphenol family. Qu has a high ability to scavenge reactive oxygen species (ROS) and reactive nitrogen species (RNS) molecules; hence, exhibiting beneficial effects in preventing obesity, diabetes, cancer, cardiovascular diseases, and inflammation. However, quercetin has low bioavailability due to poor water solubility, low absorption, and rapid excretion from the body. To address these issues, the usage of Qu nanosuspensions can improve physical stability, solubility, and pharmacokinetics. Therefore, we developed a Qu and polyethylene glycol nanosuspension (Qu-PEG NS) and confirmed its interaction by Fourier transform infrared analysis. Qu-PEG NS did not show cytotoxicity to HaCaT and RAW 264.7 cells. Furthermore, Qu-PEG NS effectively reduced the nitrogen oxide (NO) production in lipopolysaccharide (LPS)-induced inflammatory RAW 264.7 cells. Additionally, Qu-PEG NS effectively lowered the levels of COX-2, NF-κB p65, and IL-1β in the LPS-induced inflammatory RAW 264.7 cells. Specifically, Qu-PEG NS exhibited anti-inflammatory properties by scavenging the ROS and RNS and mediated the inhibition of NF-κB signaling pathways. In addition, Qu-PEG NS had a high antioxidant effect and antibacterial activity against Escherichia coli and Bacillus cereus. Therefore, the developed novel nanosuspension showed comparable antioxidant, anti-inflammatory, and antibacterial functions and may also improve solubility and physical stability compared to raw quercetin.
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Affiliation(s)
- Sang Gu Kang
- Department of Biotechnology, Institute of Biotechnology, Life and Applied Sciences, Yeungnam University, Gyeongsan 38541, Korea
| | - Gi Baek Lee
- Department of Biotechnology, Institute of Biotechnology, Life and Applied Sciences, Yeungnam University, Gyeongsan 38541, Korea
| | - Ramachandran Vinayagam
- Department of Biotechnology, Institute of Biotechnology, Life and Applied Sciences, Yeungnam University, Gyeongsan 38541, Korea
| | - Geum Sook Do
- Department of Biology, College of Natural Sciences, Kyungpook National University, Buk-gu, Daegu 41566, Korea
| | - Se Yong Oh
- Nova M Healthcare Co., Ltd., 16-53, Jisiksaneop 4-ro, Gyeongsan 38408, Korea
| | - Su Jin Yang
- Nova M Healthcare Co., Ltd., 16-53, Jisiksaneop 4-ro, Gyeongsan 38408, Korea
| | - Jun Bum Kwon
- Nova M Healthcare Co., Ltd., 16-53, Jisiksaneop 4-ro, Gyeongsan 38408, Korea
| | - Mahendra Singh
- Department of Biotechnology, Institute of Biotechnology, Life and Applied Sciences, Yeungnam University, Gyeongsan 38541, Korea
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Vinayagam R, Eun Lee K, Ambati RR, Gundamaraju R, Fawzy Ramadan M, Gu Kang S. Recent development in black garlic: Nutraceutical applications and health-promoting phytoconstituents. Food Reviews International 2021. [DOI: 10.1080/87559129.2021.2012797] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Ramachandran Vinayagam
- Department of Biotechnology, Institute of Biotechnology, College of Life and Applied Sciences, Yeungnam University, Gyeongsan, The Republic of Korea
| | - Kyung Eun Lee
- Department of Biotechnology, Institute of Biotechnology, College of Life and Applied Sciences, Yeungnam University, Gyeongsan, The Republic of Korea
- Stemforce, Institute of Industrial Technology, Yeungnam University, Gyeongsan, Republic of Korea
| | - Ranga Rao Ambati
- Department of Biotechnology, Vignan’s Foundation for Science, Technology, and Research Deemed to be University, Guntur, India
| | - Rohit Gundamaraju
- School of Health Sciences, University of Tasmania, Launceston, Australia
| | - Mohamed Fawzy Ramadan
- Agricultural Biochemistry Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
- Deanship of Scientific Research, Umm Al-Qura University, Makkah, KSA
| | - Sang Gu Kang
- Department of Biotechnology, Institute of Biotechnology, College of Life and Applied Sciences, Yeungnam University, Gyeongsan, The Republic of Korea
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Arif T, Vinayagam R. 108 Developing A Non-Biopsy Protocol for The Female Cohort 25-29 Years with Clinically Typical Fibroadenoma Conforming to Maxwell Criteria on Ultrasound – Our Peninsular Experience in Wirral. Br J Surg 2021. [DOI: 10.1093/bjs/znab134.367] [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: 11/14/2022]
Abstract
Abstract
Introduction
The aim of this study was to introduce a non –biopsy protocol in our department for benign breast lump referrals confirmed as typical U2/3 fibroadenoma on imaging. Current UK guidance is not to biopsy sonographically typical fibroadenoma in women under 25 years. We have studied our population extending the radiological Maxwell criteria reflecting benign outcomes in 25-29 years cohort.
Method
Retrospectively data was collected of all women between 25-29 years of age undergoing core biopsies for ultrasound confirmed fibroadenoma between 2014 and 2019 over a period of five years. The number of cancers picked up was compared with the number of referrals and the discordance between radiological diagnosis of fibroadenoma and histopathological confirmation of malignancy was recorded.
Results
A total of 1707 referrals were made across five years. n = 175 image guided core biopsies were carried out for U2, U3, U4 lesions appearing as fibroadenoma on ultrasound. Out of these (n = 175), all lesions coded U2/3 (n = 165) based on Maxwell criteria on ultrasound were negative for cancer. U4 lesions on ultrasound were confirmed as cancers mimicking fibroadenoma(n = 10).
Conclusions
This retrospective audit of 1707 patients provides sound evidence for non-biopsy of typical fibroadenoma in 25–29 years cohort sonographic features meet strict criteria.
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Affiliation(s)
- T Arif
- Wirral University Teaching Hospital NHS, Wirral, United Kingdom
| | - R Vinayagam
- Wirral University Teaching Hospital NHS, Wirral, United Kingdom
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Arif T, Vinayagam R, Lund JM, Poonawala S. 109 Game Changing Magnetic Experience in Rural and Urban Wirral Peninsula - Our Experience with Magseed Localisation of Impalpable Breast Tumours and Axillary Nodes. Br J Surg 2021. [DOI: 10.1093/bjs/znab134.368] [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: 11/13/2022]
Abstract
Abstract
Introduction
Magseed is a novel localization technology in which a tiny seed is inserted to accurately mark the site of breast tumour. These can be detected intra-operatively by sentimag localization system. It aids localization of impalpable breast lesions improving margin clearance rates.
Method
A prospective study of first fifty Magseed localised breast tumour and axillary node excisions in Clatterbridge General Hospital.
Results
A total of 50 patients had 52 Magseed inserted. n = 14 was symptomatic, n = 35 was screen detected and n = 1 was an incidental finding on surveillance mammogram for a B3 lesion. 30 seeds were inserted on the right and 22 were inserted on the left (two were bilateral). 44 seeds were inserted under ultrasound guidance and the rest were targeted under stereo guidance (n = 8). Deployment of two resulted in malposition requiring wire localization. Mean age of subjects was 59.76 (range 31-81) years. Mean time to surgery after magseed insertion was 8.04 (range 1-27) days. Mean weight of the specimen was 48.57(range 10-264) gm. Mean size of the lesions was 20.32 (range 8-65) mm. Redo surgery for margin clearance was performed bringing the re-excision rate to 15.38% (n = 8).
Conclusions
We conclude that Magseed localization of breast tumours is a safe and reliable technique
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Affiliation(s)
- T Arif
- Wirral University Teaching Hospital, Wirral, United Kingdom
| | - R Vinayagam
- Wirral University Teaching Hospital, Wirral, United Kingdom
| | - J M Lund
- Wirral University Teaching Hospital, Wirral, United Kingdom
| | - S Poonawala
- Wirral University Teaching Hospital, Wirral, United Kingdom
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Vinayagam R, Santhoshkumar M, Lee KE, David E, Kang SG. Bioengineered gold nanoparticles using Cynodon dactylon extract and its cytotoxicity and antibacterial activities. Bioprocess Biosyst Eng 2021; 44:1253-1262. [PMID: 33606108 DOI: 10.1007/s00449-021-02527-5] [Citation(s) in RCA: 4] [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: 11/03/2020] [Accepted: 01/31/2021] [Indexed: 02/08/2023]
Abstract
In this study, simple and green route approach was applied for the synthesis gold nanoparticles (AuNPs) containing an aqueous extract of Cynodon dactylon L. Pers., (C. dactylon). The synthesized AuNPs were characterized using spectral and microscopic analysis. The changes in the color pattern were observed upon synthesis by UV-vis spectrophotometer with a peak of 530 nm. The FT-IR, XRD, SEM, and TEM were used to analyze the crystal nature and morphology of the green synthesized AuNPs. The C. dactylon-loaded AuNPs in different concentrations (0.625-100 μg/ml) were used to assess cytotoxicity activity against MCF-7 cell line and where the IC50 was found to be 31.34 μg/ml by MTT assay. The C. dactylon-AuNPs were significantly increased reactive oxygen species (ROS) generation, DNA fragmentation, and mitochondrial membrane changes observed by dichlorodihydroflurescenin diacetate (DCFH-DA), 4',6-diamidino-2-phenylindole (DAPI), Rhodamine-123, and acridine orange (AO)/ethidium bromide (EtBr) staining assay. Besides the microbial study revealed that C. dactylon-AuNPs exhibited significant antibacterial activity against clinically isolated pathogenic bacteria such as Enterobacter cloacae, Staphylococus Haemolytics, Staphylococcus petrasii subsp. Pragensis and Bacillus cereus with a zone of inhibition 13, 12, 13 and 12 mm, respectively. It could be concluded that C. dactylon has the ability to be involved in the biosynthesis of AuNPs, and the pharmacological studies proved the promising cytotoxic effect on MCF-7 cell line and pathogenic bacterial species.
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Affiliation(s)
- Ramachandran Vinayagam
- Department of Biotechnology, Institute of Biotechnology, College of Life and Applied Sciences, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk, 38541, Republic of Korea
| | - Murali Santhoshkumar
- Department of Biotechnology, Thiruvalluvar University, Serkadu, Vellore, Tamil Nadu, 632 115, India
| | - Kyung Eun Lee
- Department of Biotechnology, Institute of Biotechnology, College of Life and Applied Sciences, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk, 38541, Republic of Korea.,Stemforce, 313 Institute of Industrial Technology, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk, 38541, Republic of Korea
| | - Ernest David
- Department of Biotechnology, Thiruvalluvar University, Serkadu, Vellore, Tamil Nadu, 632 115, India
| | - Sang Gu Kang
- Department of Biotechnology, Institute of Biotechnology, College of Life and Applied Sciences, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk, 38541, Republic of Korea.
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Vijayakumar S, Vinayagam R, Anand MAV, Venkatachalam K, Saravanakumar K, Wang MH, Casimeer C S, KM G, David E. Green synthesis of gold nanoparticle using Eclipta alba and its antidiabetic activities through regulation of Bcl-2 expression in pancreatic cell line. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101786] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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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Jayachandran M, Vinayagam R, Xu B. Guava leaves extract ameliorates STZ induced diabetes mellitus via activation of PI3K/AKT signaling in skeletal muscle of rats. Mol Biol Rep 2020; 47:2793-2799. [PMID: 32240465 DOI: 10.1007/s11033-020-05399-2] [Citation(s) in RCA: 4] [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] [Received: 01/01/2020] [Revised: 03/01/2020] [Accepted: 03/25/2020] [Indexed: 12/20/2022]
Abstract
Blood glucose homeostasis and insulin signaling pathway regulation take a vital role in the management of diabetes mellitus. Our present was designed to explore the mechanism of the blood homeostasis, regulation of oxidative stress and insulin signaling pathway by guava leaf extract (GLE). Diabetes mellitus was induced in male albino Wistar by streptozotocin (STZ) (Single dose-40 mg/kg b.w.). As an extension STZ rats received GLE (GLE; 200 mg/kg b.w). At the end of the study the lipid peroxidation products, antioxidants, insulin signaling genes were analyzed. Treatment with GLE resulted in decreased plasma and skeletal muscle lipid peroxidation markers, increased antioxidants, and improved insulin signaling genes. GLE treatment helps to maintain blood homeostasis alleviates oxidative stress and regulates the insulin signaling genes in skeletal muscle. Overall the results suggest GLE treatment regulates blood glucose, inhibits oxidative stress, and importantly it regulates insulin signaling pathway genes in skeletal muscle. Further studies on the GLE role in other important pathways can add additional strength to the claim that GLE is a strong anti-diabetic candidate.
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Affiliation(s)
- Muthukumaran Jayachandran
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, 2000, Jintong Road, Tangjiawan, Zhuhai, 519087, Guangdong, China
| | - Ramachandran Vinayagam
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, 2000, Jintong Road, Tangjiawan, Zhuhai, 519087, Guangdong, China
| | - Baojun Xu
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, 2000, Jintong Road, Tangjiawan, Zhuhai, 519087, Guangdong, China.
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Venkatachalam K, Vinayagam R, Arokia Vijaya Anand M, Isa NM, Ponnaiyan R. Biochemical and molecular aspects of 1,2-dimethylhydrazine (DMH)-induced colon carcinogenesis: a review. Toxicol Res (Camb) 2020; 9:2-18. [PMID: 32440334 DOI: 10.1093/toxres/tfaa004] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [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: 01/20/2020] [Revised: 01/20/2020] [Accepted: 02/12/2020] [Indexed: 02/07/2023] Open
Abstract
1,2-dimethylhydrazine (DMH) is a member in the class of hydrazines, strong DNA alkylating agent, naturally present in cycads. DMH is widely used as a carcinogen to induce colon cancer in animal models. Exploration of DMH-induced colon carcinogenesis in rodent models provides the knowledge to perceive the biochemical, molecular, and histological mechanisms of different stages of colon carcinogenesis. The procarcinogen DMH, after a series of metabolic reactions, finally reaches the colon, there produces the ultimate carcinogen and reactive oxygen species (ROS), which further alkylate the DNA and initiate the development of colon carcinogenesis. The preneolpastic lesions and histopathological observations of DMH-induced colon tumors may provide typical understanding about the disease in rodents and humans. In addition, this review discusses about the action of biotransformation and antioxidant enzymes involved in DMH intoxication. This understanding is essential to accurately identify and interpret alterations that occur in the colonic mucosa when evaluating natural or pharmacological compounds in DMH-induced animal colon carcinogenesis.
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Affiliation(s)
- Karthikkumar Venkatachalam
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, UAE University, Al Ain-17666, United Arab Emirates
| | - Ramachandran Vinayagam
- Department of Biotechnology, Thiruvalluvar University, Serkadu, Vellore, Tamilnadu 632 115, India
| | | | - Nurulfiza Mat Isa
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, 43400 Seri Kembangan, Selangor, Malaysia
| | - Rajasekar Ponnaiyan
- Department of Zoology, Jamal Mohamed College, Tiruchirappalli, Tamil Nadu 620020, India
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Mariadoss AVA, Vinayagam R, Senthilkumar V, Paulpandi M, Murugan K, Xu B, K.M. G, Kotakadi VS, David E. Phloretin loaded chitosan nanoparticles augments the pH-dependent mitochondrial-mediated intrinsic apoptosis in human oral cancer cells. Int J Biol Macromol 2019; 130:997-1008. [DOI: 10.1016/j.ijbiomac.2019.03.031] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 02/28/2019] [Accepted: 03/04/2019] [Indexed: 10/27/2022]
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Burrah R, Vinayagam R, James K. Abstract P3-13-06: Breast conserving surgery by periareolar mammoplasty – Surgical and oncological outcomes. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p3-13-06] [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: 11/16/2022]
Abstract
Abstract
Background
Periareolar mammoplasty is a volume displacement oncoplastic technique for patients with small to medium sized breasts. This approach provides good access for a safe excision for both central and peripheral lesions, especially for those in the upper half of the breast. Cosmetically it allows good reshaping of the breast, and contralateral symmetrisation is rarely required. This technique has the potential to replace the standard wide local excision for breast cancer. There is scarcity of data about the results of this procedure in the literature. We present a single surgeon experience with this technique in terms of surgical and oncological outcomes.
Methods
Retrospective review of patients' records from October 2013 to December 2017 was performed. The patients' demographics, tumour characteristics and the early oncological outcomes were studied. The postoperative complications and rate of symmetrisation were also studied.
Results
-There were 110 patients in this study period. The median age was 60 years (range 36 – 82 years) and screen detected tumours accounted for 66% (72 patients) of cases.
-Neoadjuvant therapy was given in 14 patients (endocrine therapy – 12, chemotherapy – 1, dual targeted therapy – 1).
-Most patients had the lesion in the upper half of the breast (upper outer-71, upper inner-33).
-The average size of the tumour was 18.9mm (range 1.8 – 70mm) and the average weight of the excised specimen was 47.2gm (range 11-190gms). Invasive carcinoma was seen in 94 patients (85%) of which 86 patients had invasive ductal carcinoma, 4 had invasive lobular carcinoma and 4 had special type. Pure DCIS was present in 16 patients (15%). Most patients had grade 2 cancers (45%). DCIS was present with invasive carcinoma in 55% of cases.
-Thirteen patients had positive margins (<1mm) and DCIS coexisted with invasive carcinoma in 7 of 13 patients. Four patients with pure DCIS had positive margins.
-Of the 13 patients with positive margins: 5 required margin re-excision, 6 had completion mastectomy and 2 received only radiotherapy.
-The median follow-up was 25 months (range 3 – 53 months).
Seven patients developed complications which included 3 hematomas (2 requiring evacuation) and 4 wound infection which were treated with antibiotics. Only two patients required contralateral symmetrisation and no local recurrences were encountered in this study period.
Conclusion
Periareolar mammoplasty is a robust, easily adaptable and reproducible oncoplastic technique allowing for safe wide local excision of breast cancer. The margin re-excision, postoperative complication and recurrence rates in this study are acceptable and low compared to standard wide local excision. This technique gives excellent access, and allows better breast reshaping resulting in pleasing aesthetic outcome. Contralateral symmetrisation is rarely required with this technique.
Citation Format: Burrah R, Vinayagam R, James K. Breast conserving surgery by periareolar mammoplasty – Surgical and oncological outcomes [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P3-13-06.
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Affiliation(s)
- R Burrah
- Wirral University Teaching Hospital, Wirral, United Kingdom
| | - R Vinayagam
- Wirral University Teaching Hospital, Wirral, United Kingdom
| | - K James
- Wirral University Teaching Hospital, Wirral, United Kingdom
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Jayachandran M, Vinayagam R, Ambati RR, Xu B, Chung SSM. Guava Leaf Extract Diminishes Hyperglycemia and Oxidative Stress, Prevents β-Cell Death, Inhibits Inflammation, and Regulates NF-kB Signaling Pathway in STZ Induced Diabetic Rats. Biomed Res Int 2018; 2018:4601649. [PMID: 29670899 PMCID: PMC5835305 DOI: 10.1155/2018/4601649] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 11/18/2017] [Accepted: 12/11/2017] [Indexed: 12/19/2022]
Abstract
Traditional Chinese medication has been utilized by Chinese medical practitioners to treat the varied symptoms of diabetes mellitus (DM). Notably, guava leaf has been used to treat diabetes in Asia. Our present study has been designed to analyze the action of guava leaf extract (GLE) at the molecular level in treating DM. A low dose of streptozotocin (STZ) was used to induce experimental diabetes in animals. Rats were treated with GLE at different concentrations (100, 200, and 400 mg/kg b.w.). The standard drug glibenclamide (GB) (600 μg/kg b.w.) was used for comparison. The diabetic rats showed a reduced level of insulin, accompanied by exaggerated levels of blood glucose, lipid peroxidation product, and augmented expressions of inflammatory cytokines, and showed reduced levels of antioxidants compared to the control rats. Supplementation with GLE counteracted the consequences of STZ. It suppresses the oxidative stress and inhibits the state of inflammation and the results are almost similar to that of standard drug group (GB group 5). Our present research, therefore, provides useful data concerning guava leaf extract by a thorough assessment in diabetes management. Being a natural product, additional analysis on GLE can shed light on finding effective phytochemicals within the field of diabetes mellitus.
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Affiliation(s)
- Muthukumaran Jayachandran
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong 519087, China
| | - Ramachandran Vinayagam
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong 519087, China
| | - Ranga Rao Ambati
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong 519087, China
- Department of Biotechnology, Vignan's Foundation for Science, Technology and Research (Deemed to Be University), Vadlamudi, Guntur, Andhra Pradesh 522213, India
| | - Baojun Xu
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong 519087, China
| | - Stephen Sum Man Chung
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong 519087, China
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Vinayagam R, Xu B. 7, 8-Dihydroxycoumarin (daphnetin) protects INS-1 pancreatic β-cells against streptozotocin-induced apoptosis. Phytomedicine 2017; 24:119-126. [PMID: 28160851 DOI: 10.1016/j.phymed.2016.11.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 11/14/2016] [Accepted: 11/30/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND AND OBJECTIVE Daphnetin (7, 8-dihydroxycoumarin), a natural coumarin compound, is known to exhibit antioxidant and anti-inflammatrory effects. However, the underlying mechanisms of its anti-apoptotic and antidiabetic effects yet not been examined. Therefore, the present work studied the anti-apoptotic and anti-diabetic effects of daphnetin by in vitro experiments. METHODS The rat insulinoma (INS-1) cells were pre-treated with daphnetin at different concentrations (1, 10, 20 and 40µM) for 24h followed by exposition to streptozotocin (STZ) (3mM) for 12h. Effects of daphnetin and STZ on INS-1 cells were determined by MTT assay, glucose stimulated insulin secretion (GSIS) assay, lipid peroxidation, antioxidant status (SOD, CAT, GPx, and GST) Apoptosis staining (DAPI, Hoechst 33342, AO/EB and ROS) was performed by fluorescence microscopy, and Bcl-2, Bax and NF-κB protein expression was detected by Western blotting. RESULTS MTT assay indicated that the viability of INS-1 cells was significantly reduced with exposure to STZ for 12h as compared to control cells, while pre-treated with daphnetin for 24h resulted in a significant improvement of cell viability. The effects daphnetin treatment in INS-1 cells on insulin secretion was tested and results showed that the pre-treatment of daphnetin could improve GSIS. Further, daphnetin pre-treatment significantly reduced the levels of lipid peroxidation markers and also improved antioxidant enzymes' activities in STZ-induced INS-1 cells. Western blotting assay revealed that daphnetin could suppress apoptosis through up-regulation of anti-apoptotic Bcl-2 protein expression and the down-regulation of pro-apoptotic Bax and nuclear factor NF-κB protein levels. CONCLUSION The results showed that daphnetin might be used in treating diabetes due to its insulin stimulating property and subsequent regulation of apoptotic pathway.
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Affiliation(s)
- Ramachandran Vinayagam
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong 519085, China
| | - Baojun Xu
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong 519085, China.
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Abstract
Background Natural food products have been used for combating human diseases for thousands of years. Naturally occurring flavonoids including flavones, flavonols, flavanones, flavonols, isoflavones and anthocyanidins have been proposed as effective supplements for management and prevention of diabetes and its long-term complications based on in vitro and animal models. Aim To summarize the roles of dietary flavonoids in diabetes management and their molecular mechanisms. Findings Tremendous studies have found that flavonoids originated from foods could improve glucose metabolism, lipid profile, regulating the hormones and enzymes in human body, further protecting human being from diseases like obesity, diabetes and their complications. Conclusion In the current review, we summarize recent progress in understanding the biological action, mechanism and therapeutic potential of the dietary flavonoids and its subsequent clinical outcomes in the field of drug discovery in management of diabetes mellitus.
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Affiliation(s)
- Ramachandran Vinayagam
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, 28, Jinfeng Road, Tangjiawan, Zhuhai, Guangdong 519085 China
| | - Baojun Xu
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, 28, Jinfeng Road, Tangjiawan, Zhuhai, Guangdong 519085 China
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Vinayagam R, Jayachandran M, Xu B. Antidiabetic Effects of Simple Phenolic Acids: A Comprehensive Review. Phytother Res 2015; 30:184-99. [PMID: 26634804 DOI: 10.1002/ptr.5528] [Citation(s) in RCA: 155] [Impact Index Per Article: 17.2] [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: 05/23/2015] [Revised: 09/21/2015] [Accepted: 11/06/2015] [Indexed: 12/13/2022]
Abstract
Diabetes mellitus (DM) has become a major public health threat across the globe. Current antidiabetic therapies are based on synthetic drugs that very often have side effects. It has been widely acknowledged that diet plays an important role in the management of diabetes. Phenolic acids are widely found in daily foods such as fruits, vegetables, cereals, legumes, and wine and they provide biological, medicinal, and health properties. Simple phenolic acids have been shown to increase glucose uptake and glycogen synthesis, improve glucose and lipid profiles of certain diseases (obesity, cardiovascular diseases, DM, and its complication). The current review is an attempt to list out the antidiabetic effects of simple phenolic acids from medicinal plants and botanical foods.
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Affiliation(s)
- Ramachandran Vinayagam
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong, 519085, China
| | - Muthukumaran Jayachandran
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong, 519085, China
| | - Baojun Xu
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong, 519085, China
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Rupasinghe S, Dean R, Vinayagam R, Lund J, Callaghan M, Poonawala S. Negative axillary clearance in sentinel node positive breast cancer. Int J Surg 2015. [DOI: 10.1016/j.ijsu.2015.07.081] [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: 10/22/2022]
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Hunt L, Vinayagam R, Gopalan P, Bains A, Scott AR. Asymptomatic prostatic abscess: a cause of staphylococcal bacteraemia in uncontrolled diabetes. Practical Diabetes 2013. [DOI: 10.1002/pdi.1803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Cowlam S, Vinayagam R, Khan U, Marsden S, Minty I, Moncur P, Bain I, Yiannakou YJ. Blinded comparison of faecal loading on plain radiography versus radio-opaque marker transit studies in the assessment of constipation. Clin Radiol 2008; 63:1326-31. [PMID: 18996262 DOI: 10.1016/j.crad.2008.06.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2008] [Revised: 06/02/2008] [Accepted: 06/03/2008] [Indexed: 01/14/2023]
Abstract
AIM To compare faecal loading on plain radiography versus radio-opaque marker transit studies in the assessment of constipation. METHODS The study group was a convenience sample of patients attending the Durham Constipation Clinic. All patients underwent transit studies according to an established protocol, and severity of constipation was assessed contemporaneously using a validated questionnaire (PAC-SYM). Transit studies were performed using radio-opaque markers that were ingested over 3 consecutive days, with a radiograph taken on the fourth day. Digital images of the radiograph were digitally altered to remove all traces of the transit markers without affecting the underlying pattern of faecal loading. Four observers assessed faecal loading independently; two clinicians (C1 and C2) and two radiologists (R1 and R2). C1 and R1 used a previously described formal scoring method of assessing faecal loading, whereas C2 and R2 assessed the images as if they were in a clinic or reporting session, grading the faecal loading as mild, moderate, or severe. RESULTS One hundred patients were recruited out of 186 presenting in a 2-year period. All patients completed assessments. The correlation between observers was only fair to moderate (r ranging from 0.34-0.51). There were some surprisingly marked disagreements in 10-18% of assessments. The correlation between faecal loading and transit was weak for all observers (r ranging from 0.261-0.311). Symptom severity did not correlate with faecal loading. CONCLUSION These results suggest that there is considerable inter-observer variation in the radiological assessment of faecal loading, irrespective of the training or method used by the observer, and that there is very poor correlation with colonic transit. The diagnosis of constipation, and the assessment of severity, is best performed clinically.
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Affiliation(s)
- S Cowlam
- Sunderland Royal Hospital, Sunderland, UK
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Abstract
Laparoscopic cholecystectomy is associated with spillage of gall stones in 5%-40% of procedures, but complications occur very rarely. There are, however, isolated case reports describing a range of complications occurring both at a distance from and near to the subhepatic area. This review looks into the various modes of presentation, ways to minimise spillage, treating the complications, and the legal implications.
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Affiliation(s)
- T Sathesh-Kumar
- Department of Surgery, University Hospital of North Durham, Durham, UK.
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