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Rajeswari SVKR, Vijayakumar P. Development of sensor system and data analytic framework for non-invasive blood glucose prediction. Sci Rep 2024; 14:9206. [PMID: 38649731 PMCID: PMC11035575 DOI: 10.1038/s41598-024-59744-7] [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: 05/15/2023] [Accepted: 04/15/2024] [Indexed: 04/25/2024] Open
Abstract
Periodic quantification of blood glucose levels is performed using painful, invasive methods. The proposed work presents the development of a noninvasive glucose-monitoring device with two sensors, i.e., finger and wrist bands. The sensor system was designed with a near-infrared (NIR) wavelength of 940 nm emitter and a 900-1700 nm detector. This study included 101 diabetic and non-diabetic volunteers. The obtained dataset was subjected to pre-processing, exploratory data analysis (EDA), data visualization, and integration methods. Ambiguities such as the effects of skin color, ambient light, and finger pressure on the sensor were overcome in the proposed 'niGLUC-2.0v'. niGLUC-2.0v was validated with performance metrics where accuracy of 99.02%, mean absolute error (MAE) of 0.15, mean square error (MSE) of 0.22 for finger, and accuracy of 99.96%, MAE of 0.06, MSE of 0.006 for wrist prototype with ridge regression (RR) were achieved. Bland-Altman analysis was performed, where 98% of the data points were within ± 1.96 standard deviation (SD), 100% were under zone A of the Clarke Error Grid (CEG), and statistical analysis showed p < 0.05 on evaluated accuracy. Thus, niGLUC-2.0v is suitable in the medical and personal care fields for continuous real-time blood glucose monitoring.
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Affiliation(s)
- S V K R Rajeswari
- Department of Electronics and Communication Engineering, SRM Institute of Science and Technology, Kattankulathur, 603203, India
| | - P Vijayakumar
- Department of Electronics and Communication Engineering, SRM Institute of Science and Technology, Kattankulathur, 603203, India.
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2
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Richards NJ, Alqallaf A, Mitchell RD, Parnell A, Haidar HB, Almeida JR, Williams J, Vijayakumar P, Balogun A, Matsakas A, Trim SA, Patel K, Vaiyapuri S. Indian Ornamental Tarantula ( Poecilotheria regalis) Venom Affects Myoblast Function and Causes Skeletal Muscle Damage. Cells 2023; 12:2074. [PMID: 37626884 PMCID: PMC10453882 DOI: 10.3390/cells12162074] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 08/03/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
Envenomation by the Indian ornamental tarantula (Poecilotheria regalis) is medically relevant to humans, both in its native India and worldwide, where they are kept as pets. Muscle-related symptoms such as cramps and pain are commonly reported in humans following envenomation by this species. There is no specific treatment, including antivenom, for its envenomation. Moreover, the scientific knowledge of the impact of this venom on skeletal muscle function is highly limited. Therefore, we carried out this study to better understand the myotoxic properties of Poecilotheria regalis venom by determining its effects in cultured myoblasts and in the tibialis anterior muscle in mice. While there was no effect found on undifferentiated myoblasts, the venom affected differentiated multinucleated myotubes resulting in the reduction of fusion and atrophy of myotubes. Similarly, intramuscular administration of this venom in the tibialis anterior muscle in mice resulted in extensive muscle damage on day 5. However, by day 10, the regeneration was evident, and the regeneration process continued until day 20. Nevertheless, some tissue abnormalities including reduced dystrophin expression and microthrombi presence were observed on day 20. Overall, this study demonstrates the ability of this venom to induce significant muscle damage and affect its regeneration in the early stages. These data provide novel mechanistic insights into this venom-induced muscle damage and guide future studies to isolate and characterise individual toxic component(s) that induce muscle damage and their significance in developing better therapeutics.
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Affiliation(s)
- Nicholas J. Richards
- School of Biological Sciences, University of Reading, Reading RG6 6UB, UK; (N.J.R.); (A.A.); (A.P.); (H.B.H.)
| | - Ali Alqallaf
- School of Biological Sciences, University of Reading, Reading RG6 6UB, UK; (N.J.R.); (A.A.); (A.P.); (H.B.H.)
- Medical Services Authority, Ministry of Defence, Kuwait City 13012, Kuwait
| | | | - Andrew Parnell
- School of Biological Sciences, University of Reading, Reading RG6 6UB, UK; (N.J.R.); (A.A.); (A.P.); (H.B.H.)
- Micregen Ltd., Thames Valley Science Park, Reading RG2 9LH, UK;
| | - Husain Bin Haidar
- School of Biological Sciences, University of Reading, Reading RG6 6UB, UK; (N.J.R.); (A.A.); (A.P.); (H.B.H.)
| | - José R. Almeida
- School of Pharmacy, University of Reading, Reading RG6 6UB, UK; (J.R.A.); (J.W.); (P.V.)
| | - Jarred Williams
- School of Pharmacy, University of Reading, Reading RG6 6UB, UK; (J.R.A.); (J.W.); (P.V.)
| | - Pradeep Vijayakumar
- School of Pharmacy, University of Reading, Reading RG6 6UB, UK; (J.R.A.); (J.W.); (P.V.)
| | - Adedoyin Balogun
- Molecular Physiology Laboratory, Centre for Biomedicine, Hull York Medical School, Hull HU6 7RX, UK
| | - Antonios Matsakas
- Molecular Physiology Laboratory, Centre for Biomedicine, Hull York Medical School, Hull HU6 7RX, UK
| | | | - Ketan Patel
- School of Biological Sciences, University of Reading, Reading RG6 6UB, UK; (N.J.R.); (A.A.); (A.P.); (H.B.H.)
| | - Sakthivel Vaiyapuri
- School of Pharmacy, University of Reading, Reading RG6 6UB, UK; (J.R.A.); (J.W.); (P.V.)
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3
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Senthilkumaran S, Patel K, Rajan E, Vijayakumar P, Miller SW, Rucavado A, Gilabadi S, Sonavane M, Richards NJ, Williams J, Williams HF, Trim SA, Thirumalaikolundusubramanian P, Gutiérrez JM, Vaiyapuri S. Peripheral Arterial Thrombosis following Russell's Viper Bites. TH Open 2023; 7:e168-e183. [PMID: 37333023 PMCID: PMC10276757 DOI: 10.1055/s-0043-1769625] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 04/05/2023] [Indexed: 06/20/2023] Open
Abstract
Envenomings by Russell's viper ( Daboia russelii ), a species of high medical importance in India and other Asian countries, commonly result in hemorrhage, coagulopathies, necrosis, and acute kidney injury. Although bleeding complications are frequently reported following viper envenomings, thrombotic events occur rarely (reported only in coronary and carotid arteries) with serious consequences. For the first time, we report three serious cases of peripheral arterial thrombosis following Russell's viper bites and their diagnostic, clinical management, and mechanistic insights. These patients developed occlusive thrombi in their peripheral arteries and symptoms despite antivenom treatment. In addition to clinical features, computed tomography angiography was used to diagnose arterial thrombosis and ascertain its precise locations. They were treated using thrombectomy or amputation in one case that presented with gangrenous digits. Mechanistic insights into the pathology through investigations revealed the procoagulant actions of Russell's viper venom in standard clotting tests as well as in rotational thromboelastometry analysis. Notably, Russell's viper venom inhibited agonist-induced platelet activation. The procoagulant effects of Russell's viper venom were inhibited by a matrix metalloprotease inhibitor, marimastat, although a phospholipase A 2 inhibitor (varespladib) did not show any inhibitory effects. Russell's viper venom induced pulmonary thrombosis when injected intravenously in mice and thrombi in the microvasculature and affected skeletal muscle when administered locally. These data emphasize the significance of peripheral arterial thrombosis in snakebite victims and provide awareness, mechanisms, and robust strategies for clinicians to tackle this issue in patients.
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Affiliation(s)
| | - Ketan Patel
- School of Biological Sciences, University of Reading, Reading, United Kingdom
| | | | | | - Stephen W. Miller
- The Poison Control Center, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States
| | - Alexandra Rucavado
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
| | - Soheil Gilabadi
- School of Pharmacy, University of Reading, Reading, United Kingdom
| | - Medha Sonavane
- School of Pharmacy, University of Reading, Reading, United Kingdom
| | | | - Jarred Williams
- School of Pharmacy, University of Reading, Reading, United Kingdom
| | | | | | | | - José María Gutiérrez
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
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4
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Senthilkumaran S, Salim A, Almeida JR, Williams J, Vijayakumar P, Thirunavukarasu A, Christopoulos MA, Williams HF, Thirumalaikolundusubramanian P, Patel K, Vaiyapuri S. The Effectiveness of Antibiotics in Managing Bacterial Infections on Bite Sites following Snakebite Envenomation. Toxins (Basel) 2023; 15:190. [PMID: 36977081 PMCID: PMC10057039 DOI: 10.3390/toxins15030190] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 03/06/2023] Open
Abstract
Snakebite envenomation (SBE) is a life-threatening medical emergency with a high mortality rate. Common secondary complications following SBE, such as wound infections, are significant due to their impact on worsening local tissue damage and causing systemic infection. Antivenoms are not effective to treat wound infections following SBE. Moreover, in several rural clinical settings, broad-spectrum antibiotics are often used without clear guidelines or based on limited laboratory data, resulting in undesirable side effects and exacerbated treatment costs. Therefore, robust antibiotic strategies should be developed to tackle this critical issue. Currently, there is limited information available on the bacterial profiles of SBE-induced infections and antibiotic susceptibility. Hence, it is essential to improve the knowledge of bacterial profiles and their antibiotic sensitivity in SBE victims to develop better treatment strategies. This study aimed to address this issue by examining the bacterial profiles of SBE victims with a specific focus on Russell's viper envenomation. The most frequently found bacteria in the bites of SBE victims were Staphylococcus aureus, Klebsiella sp., Escherichia coli, and Pseudomonas aeruginosa. Linezolid, clindamycin, colistin, meropenem, and amikacin were some of the most effective antibiotics for commonly grown bacteria in SBE victims. Similarly, ciprofloxacin, ampicillin, amoxiclave, cefixime, and tetracyclin were the least effective antibiotics for common bacteria found in the wound swabs of SBE victims. These data provide robust guidance for infection management following SBE and offer useful insights to aid in designing effective treatment protocols for SBE with serious wound infections in rural areas where laboratory facilities may not be readily available.
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Affiliation(s)
| | - Anika Salim
- School of Pharmacy, University of Reading, Reading RG6 6UB, UK
| | - José R Almeida
- School of Pharmacy, University of Reading, Reading RG6 6UB, UK
| | - Jarred Williams
- School of Pharmacy, University of Reading, Reading RG6 6UB, UK
| | | | | | | | - Harry F Williams
- Toxiven Biotech Private Limited, Coimbatore 641042, Tamil Nadu, India
| | | | - Ketan Patel
- School of Biological Sciences, University of Reading, Reading RG6 6UB, UK
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5
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Kayalvizhi R, Amit kumar, Malarvizhi S, Topkar A, Vijayakumar P. Raw data processing techniques for material classification of objects in dual energy X-ray baggage inspection systems. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2021.109512] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Arathisenthil SV, Senthilkumaran S, Vijayakumar P, Savania R, Williams HF, Elangovan N, Bicknell AB, Patel K, Trim SA, Thirumalaikolundusubramanian P, Vaiyapuri S. Rapid development of a salivary calculus in submandibular gland and its potential causes in a young victim following Russell's viper bite. Toxicon 2022; 206:85-89. [PMID: 34979198 DOI: 10.1016/j.toxicon.2021.12.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 10/12/2021] [Revised: 12/21/2021] [Accepted: 12/27/2021] [Indexed: 01/08/2023]
Abstract
Russell's viper bites are known to cause a range of haemotoxic, neurotoxic, myotoxic, cytotoxic and nephrotoxic complications. However, the impact of Russell's viper bites as well as bites from other venomous snakes on sialolithiasis has not been previously reported. Here, we present an interesting case where a Russell's viper bite induced the rapid development of a calculus in submandibular gland in a 10-year-old boy. Upon admission, the victim did not show any symptoms of swelling and/or pain around his oral cavity. He received antivenom treatment to normalise his coagulation parameters, however, on day three he developed swelling and extreme pain around his right mandibular region. An ultrasound investigation revealed the presence of a calculus in his submandibular gland, which was removed using a minor surgical procedure. The histopathological examination revealed this as a poorly calcified salivary calculus, which is composed of cell debris, mucopolysaccharides and lipids. The mechanisms behind its rapid development following a snakebite are unclear although this could be linked to excessive inflammation or modifications to the composition of saliva induced by venom toxins or other unknown factors. This report reveals an unusual complication induced by a Russell's viper bite and alerts clinicians who treat snakebites to be aware of such envenomation effects. Moreover, this will lead to novel research to explore the relationship between venom toxins and functions of salivary glands.
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Affiliation(s)
| | | | | | - Ravi Savania
- School of Pharmacy, University of Reading, Reading, UK
| | | | - Namasivayam Elangovan
- Department of Biotechnology, School of Biosciences, Periyar University, Salem, Tamil Nadu, India
| | | | - Ketan Patel
- School of Biological Sciences, University of Reading, Reading, UK
| | | | - Ponniah Thirumalaikolundusubramanian
- Trichy SRM Medical College Hospital & Research Centre, Trichy, Tamil Nadu, India; The Tamil Nadu Dr MGR Medical University, Chennai, Tamil Nadu, India
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7
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Suganya M, Ganesan K, Vijayakumar P, Gill AS, Srivastava SK, Singh CK, Sarguna RM, Ajikumar PK, Ganesamoorthy S. Raman and Photoluminescence Spectroscopic Studies on Structural Disorder in Oxygen Deficient Gd
2
Ti
2
O
7‐δ
Single Crystals. Crystal Research and Technology 2022. [DOI: 10.1002/crat.202100287] [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] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- M. Suganya
- School of Science and Humanities Sathyabama Institute of Science and Technology Chennai Tamil Nadu India
| | - K. Ganesan
- Materials Science Group Indira Gandhi Centre for Atomic Research Kalpakkam Tamil Nadu India
- Homi Bhabha National Institute Training School Complex, Anushaktinagar Mumbai 400094 India
| | - P. Vijayakumar
- Materials Science Group Indira Gandhi Centre for Atomic Research Kalpakkam Tamil Nadu India
| | - Amirdha Sher Gill
- School of Science and Humanities Sathyabama Institute of Science and Technology Chennai Tamil Nadu India
| | - S. K. Srivastava
- Materials Science Group Indira Gandhi Centre for Atomic Research Kalpakkam Tamil Nadu India
| | - Ch. Kishan Singh
- Materials Science Group Indira Gandhi Centre for Atomic Research Kalpakkam Tamil Nadu India
| | - R. M. Sarguna
- Materials Science Group Indira Gandhi Centre for Atomic Research Kalpakkam Tamil Nadu India
| | - P. K. Ajikumar
- Materials Science Group Indira Gandhi Centre for Atomic Research Kalpakkam Tamil Nadu India
| | - S. Ganesamoorthy
- Materials Science Group Indira Gandhi Centre for Atomic Research Kalpakkam Tamil Nadu India
- Homi Bhabha National Institute Training School Complex, Anushaktinagar Mumbai 400094 India
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8
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Senthilkumaran S, Vijayakumar P, Savania R, Vaiyapuri R, Elangovan N, Patel K, Trim SA, Thirumalaikolundusubramanian P, Vaiyapuri S. Splenic rupture and subsequent splenectomy in a young healthy victim following Russell's viper bite. Toxicon 2021; 204:9-13. [PMID: 34751135 DOI: 10.1016/j.toxicon.2021.10.010] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/09/2021] [Accepted: 10/25/2021] [Indexed: 12/01/2022]
Abstract
Splenic rupture and/or splenectomy is/are not uncommon in clinical arena. Here we present this case of extensive haemorrhage-induced splenic rupture which resulted in splenectomy in a young healthy male (who did not have any previous medical conditions) following a Russell's viper bite. He developed upper abdominal and shoulder pain on his left side along with hypotension and reduced level of haemoglobin on the third day following bite despite antivenom treatment. Following confirmation of splenic rupture and haemoperitoneum by ultrasound and computed tomography scans, an emergency splenectomy was performed using laparotomy. Although Russell's viper bites are known to induce bleeding complications, splenic rupture due to haemorrhage in spleen has not been previously reported. Russell's viper venom toxins such as metalloproteases, serine proteases and phospholipase A2 might have affected the vascular permeability resulting in excessive bleeding and increased pressure in the spleen leading to rupture. Further investigations are required to underpin the impact of snake venom toxins on the architecture and functions of spleen. However, the clinicians who treat snakebites should be aware of this type of rare complications so as to provide appropriate management for such victims.
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Affiliation(s)
| | | | - Ravi Savania
- School of Pharmacy, University of Reading, Reading, UK
| | | | - Namasivayam Elangovan
- Department of Biotechnology, School of Biosciences, Periyar University, Salem, Tamil Nadu, India
| | - Ketan Patel
- School of Biological Sciences, University of Reading, Reading, UK
| | | | - Ponniah Thirumalaikolundusubramanian
- Trichy SRM Medical College Hospital & Research Centre, Trichy, Tamil Nadu, India; The Tamil Nadu Dr MGR Medical University, Chennai, Tamil Nadu, India
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9
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Senthilkumaran S, Patel K, Salim A, Vijayakumar P, Williams HF, Vaiyapuri R, Savania R, Elangovan N, Thirumalaikolundusubramanian P, Baksh MF, Vaiyapuri S. Neutrophil Gelatinase-Associated Lipocalin Acts as a Robust Early Diagnostic Marker for Renal Replacement Therapy in Patients with Russell's Viper Bite-Induced Acute Kidney Injuries. Toxins (Basel) 2021; 13:797. [PMID: 34822581 PMCID: PMC8620021 DOI: 10.3390/toxins13110797] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/07/2021] [Accepted: 11/10/2021] [Indexed: 12/14/2022] Open
Abstract
Snakebite-induced acute kidney injury (AKI) is frequently observed in patients following bites from vipers such as Russell's viper (Daboia russelii) in India. Currently, the levels of serum creatinine are mainly used as a marker to determine the necessity for renal replacement therapy (RRT) (haemodialysis) in severe cases of AKI. However, it takes up to 48 h to ascertain a distinct change in creatinine levels compared to its baseline level upon admission. The time lost between admission and the 48 h timepoint significantly affects the clinical management of snakebite victims. Moreover, early diagnosis of AKI and decision on the necessity for RRT in snakebite victims is critical in saving lives, reducing long-term complications, and minimising treatment costs arising from expensive haemodialysis. Neutrophil gelatinase-associated lipocalin (NGAL) has been recently studied as a robust early marker for AKI in non-snakebite patients. However, its suitability for clinical use in snakebite victims has not been rigorously established. Here, we demonstrate the clinical significance of plasma NGAL as a robust marker for RRT following AKI using a large cohort (309) of Russell's viper victims without any pre-existing health conditions. NGAL levels upon admission are positively correlated with creatinine levels at 48 h in different stages of AKI. Overall, NGAL acts as a robust early marker to ascertain the need for RRT following Russell's viper bites. The quantification of NGAL can be recommended as a routine test in hospitals that treat snakebites to decide on RRT at early time points instead of waiting for 48 h to confirm the increase in creatinine levels. The diagnostic use of NGAL in Russell's viper victims with pre-existing comorbidities and for other vipers should be evaluated in future studies.
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Affiliation(s)
- Subramanian Senthilkumaran
- Department of Biotechnology, School of Biosciences, Periyar University, Salem 636011, Tamil Nadu, India; (S.S.); (N.E.)
- Emergency Department, Manian Medical Centre, Erode 638001, Tamil Nadu, India
| | - Ketan Patel
- School of Biological Sciences, University of Reading, Reading RG6 6UB, UK;
| | - Anika Salim
- School of Pharmacy, University of Reading, Reading RG6 6UB, UK; (A.S.); (P.V.); (R.S.)
| | - Pradeep Vijayakumar
- School of Pharmacy, University of Reading, Reading RG6 6UB, UK; (A.S.); (P.V.); (R.S.)
| | - Harry F. Williams
- Research and Development Department, Toxiven Biotech Private Limited, Coimbatore 641042, Tamil Nadu, India; (H.F.W.); (R.V.)
| | - Rajendran Vaiyapuri
- Research and Development Department, Toxiven Biotech Private Limited, Coimbatore 641042, Tamil Nadu, India; (H.F.W.); (R.V.)
| | - Ravi Savania
- School of Pharmacy, University of Reading, Reading RG6 6UB, UK; (A.S.); (P.V.); (R.S.)
| | - Namasivayam Elangovan
- Department of Biotechnology, School of Biosciences, Periyar University, Salem 636011, Tamil Nadu, India; (S.S.); (N.E.)
| | | | - M. Fazil Baksh
- Department of Mathematics and Statistics, University of Reading, Reading RG6 6UR, UK;
| | - Sakthivel Vaiyapuri
- School of Pharmacy, University of Reading, Reading RG6 6UB, UK; (A.S.); (P.V.); (R.S.)
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Gupta BB, Prajapati V, Nedjah N, Vijayakumar P, El-Latif AAA, Chang X. Machine learning and smart card based two-factor authentication scheme for preserving anonymity in telecare medical information system (TMIS). Neural Comput Appl 2021. [DOI: 10.1007/s00521-021-06152-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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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12
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Varghese BT, Vijayakumar P, Ani Raj R, Thomas S. Salvaging skin loss of free fibular osteo-cutaneous flaps in oral oncological reconstruction. Oral Oncol 2019; 97:131-132. [PMID: 31477428 DOI: 10.1016/j.oraloncology.2019.08.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 08/27/2019] [Accepted: 08/27/2019] [Indexed: 10/26/2022]
Affiliation(s)
- Bipin T Varghese
- Head and Neck Surgery Unit, Department of Surgical Services, Regional Cancer Centre, Trivandrum, Kerala 695011, India.
| | - P Vijayakumar
- Head and Neck Surgery Unit, Department of Surgical Services, Regional Cancer Centre, Trivandrum, Kerala 695011, India
| | - R Ani Raj
- Head and Neck Surgery Unit, Department of Surgical Services, Regional Cancer Centre, Trivandrum, Kerala 695011, India
| | - Shaji Thomas
- Head and Neck Surgery Unit, Department of Surgical Services, Regional Cancer Centre, Trivandrum, Kerala 695011, India
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13
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Birla S, Vijayakumar P, Sehgal S, Bhatnagar S, Pallavi K, Sharma A. Characterization of a Novel POU1F1 Mutation Identified on Screening 160 Growth Hormone Deficiency Patients. Horm Metab Res 2019; 51:248-255. [PMID: 31022740 DOI: 10.1055/a-0867-1026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The objective of the study is the functional characterization of a novel POU1F1 c.605delC mutation in combined pituitary hormone deficiency (CPHD) and to report the clinical and genetic details of 160 growth hormone deficiency patients. Screening of GH1, GHRHR, POU1F1, PROP1, and HESX1 genes by Sanger sequencing was carried out in 160 trios and 100 controls followed by characterization of the POU1F1 c.605delC mutation by expression studies including site directed mutagenesis, co-transfection, protein degradation, and luciferase assays to compare the wild type and mutant POU1F1. In vitro studies showed that the POU1F1 c.605delC mutation codes for a truncated protein with reduced transactivation capacity on its downstream effectors, viz., growth hormone (GH) and prolactin (PRL) causing severe CPHD. Experiments using different protease inhibitors reveal rescue of the protein upon blockage of the lysosomal pathway that might be useful in novel drug designing using targeted approach thereby maintaining the milieu and preventing/delaying the disease. The study provides an insight into the disease causing mechanism of POU1F1 c.605delC mutation identified in a CPHD child with severe short stature and failure to thrive. It also shows mutation effect on the expression, function and turnover of protein and highlights mechanistic details by which these potent regulators may operate.
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Affiliation(s)
- Shweta Birla
- Laboratory of Cyto-Molecular Genetics, Department of Anatomy, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - P Vijayakumar
- Pediatric Biology Center, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster, Faridabad, India
| | - Shilpi Sehgal
- Pediatric Biology Center, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster, Faridabad, India
- Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Shinjini Bhatnagar
- Pediatric Biology Center, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster, Faridabad, India
| | - Kshetrapal Pallavi
- Pediatric Biology Center, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster, Faridabad, India
| | - Arundhati Sharma
- Laboratory of Cyto-Molecular Genetics, Department of Anatomy, All India Institute of Medical Sciences (AIIMS), New Delhi, India
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14
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Wang C, Zhu Y, Shi W, Chang V, Vijayakumar P, Liu B, Mao Y, Wang J, Fan Y. A Dependable Time Series Analytic Framework for Cyber-Physical Systems of IoT-based Smart Grid. ACM Trans Cyber-Phys Syst 2019. [DOI: 10.1145/3145623] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
With the emergence of cyber-physical systems (CPS), we are now at the brink of next computing revolution. The Smart Grid (SG) built on top of IoT (Internet of Things) is one of the foundations of this CPS revolution, which involves a large number of smart objects connected by networks. The volume of time series of SG equipment is tremendous and the raw time series are very likely to contain missing values because of undependable network transferring. The problem of storing a tremendous volume of raw time series thereby providing a solid support for precise time series analytics now becomes tricky. In this article, we propose a dependable time series analytics (DTSA) framework for IoT-based SG. Our proposed DTSA framework is capable of providing a dependable data transforming from CPS to the target database with an extraction engine to preliminary refining raw data and further cleansing the data with a correction engine built on top of a sensor-network-regularization-based matrix factorization method. The experimental results reveal that our proposed DTSA framework is capable of effectively increasing the dependability of raw time series transforming between CPS and the target database system through the online lightweight extraction engine and the offline correction engine. Our proposed DTSA framework would be useful for other industrial big data practices.
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Affiliation(s)
- Chang Wang
- Shanghai Jiao Tong University, Minhang District, Shagnhai
| | - Yongxin Zhu
- Chinese Academy of Sciences; Shanghai Jiao Tong University, Shagnhai, P.R.C
| | - Weiwei Shi
- Shanghai Jiao Tong University, Minhang District, Shagnhai
| | - Victor Chang
- Xi’an Jiaotong Liverpool University, Suzhou, P.R.C
| | - P. Vijayakumar
- University College of Engineering Tindivanam, Tindivanam, Tamilnadu, India
| | - Bin Liu
- Shanghai Jiao Tong University, Shagnhai, P.R.C
| | - Yishu Mao
- Shanghai Jiao Tong University, Minhang District, Shagnhai, P.R.C
| | - Jiabao Wang
- Shanghai Jiao Tong University, Minhang District, Shagnhai, P.R.C
| | - Yiping Fan
- Shanghai Jiao Tong University, Minhang District, Shagnhai, P.R.C
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Manivannan C, Baskaran S, Vijayakumar P, Renganathan R. Spectroscopic investigation and computational studies on the interaction of Acriflavine with various estrogens. Spectrochim Acta A Mol Biomol Spectrosc 2019; 206:622-629. [PMID: 30056036 DOI: 10.1016/j.saa.2018.07.047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 03/21/2018] [Revised: 06/23/2018] [Accepted: 07/15/2018] [Indexed: 06/08/2023]
Abstract
The fluorescence quenching of Acriflavine (AFN) by certain estrogens was examined in aqueous media by employing steady state and time-resolved fluorescence measurements. The absorption spectra of AFN change with significant bathochromic shift in presence of quencher molecules. The quenching behavior was examined by correlating the bimolecular quenching rate constant (kq) with the free energy change (ΔG). The decrease in quenching rate constant depends on the increase in oxidation potential of quencher molecules. The fluorescence quenching experiments were carried out in different solvents of varying polarities and reveals the possibility of charge transfer quenching mechanism. Lifetime measurements indicate static quenching. The quenching behavior is addressed from bond dissociation enthalpy (BDE) calculations. The antioxidant activity of estrogen compounds were evaluated by deoxyribose oxidation assay.
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Affiliation(s)
- C Manivannan
- Department of Chemistry, Bannari Amman Institute of Technology, Sathyamangalam-01, India.
| | - S Baskaran
- Department of Chemistry, Tsinghua University, Beijing 100084, PR China
| | - P Vijayakumar
- School of Chemistry, Bharathidasan University, Tiruchirappalli-24, India
| | - R Renganathan
- School of Chemistry, Bharathidasan University, Tiruchirappalli-24, India
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Abstract
To cope up with the Big Data explosion, the Nth Order Binary Encoding (NOBE) algorithm with the Split-protocol has been proposed. In the earlier papers, the application Split-protocol for security, reliability, availability, HPC have been demonstrated and implemented encoding. This technology will significantly reduce the network traffic, improve the transmission rate and augment the capacity for data storage. In addition to data compression, improving the privacy and security is an inherent benefit of the proposed method. It is possible to encode the data recursively up to N times and use a unique combination of NOBE's parameters to generate encryption keys for additional security and privacy for data on the flight or at a station. This paper describes the design and a preliminary demonstration of (NOBE) algorithm, serving as a foundation for application implementers. It also reports the outcomes of computable studies concerning the performance of the underlying implementation.
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Affiliation(s)
- Bharat S Rawal
- Penn State Abington, Abington, Pennsylvania, United States
| | - Songjie Liang
- SoroTek Consulting Inc, North Potomac, Maryland, United States
| | - Shiva Gautam
- Harvard Medical School, Boston, Massachusetts, United States
| | | | - P Vijayakumar
- University College of Engineering Tindivanam, Ayyanthoppu, India
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18
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Kumar A, Vijayakumar P, Gandhale PN, Ranaware PB, Kumar H, Kulkarni DD, Raut AA, Mishra A. Genome-wide gene expression pattern underlying differential host response to high or low pathogenic H5N1 avian influenza virus in ducks. Acta Virol 2017; 61:66-76. [PMID: 28161961 DOI: 10.4149/av_2017_01_66] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The differences in the influenza viral pathogenesis observed between different pathogenic strains are associated with distinct properties of virus strains and the host immune responses. In order to determine the differences in the duck immune response against two different pathogenic strains, we studied genome-wide host immune gene response of ducks infected with A/duck/India/02CA10/2011 and A/duck/Tripura/103597/2008 H5N1 viruses using custom-designed microarray. A/duck/India/02CA10/2011 is highly pathogenic virus (HP) to ducks, whereas A/duck/Tripura/103597/2008 is a low pathogenic (LP) virus strain. Comparative lung tissue transcriptome analysis of differentially expressed genes revealed that 686 genes were commonly expressed, 880 and 1556 genes are expressed uniquely to infection with HP and LP virus, respectively. The up-regulation of chemokines (CCL4 and CXCR4) and IFN-stimulated genes (IFITM2, STAT3, TGFB1 and TGFB3) was observed in the lung tissues of ducks infected with HP virus. The up-regulation of other immune genes (IL17, OAS, SOCS3, MHC I and MHC II) was observed in both infection conditions. The expression of important antiviral immune genes MX, IFIT5, IFITM5, ISG12, β-defensins, RSAD2, EIF2AK2, TRIM23 and SLC16A3 was observed in LP virus infection, but not in HP virus infection. Several immune-related gene ontology terms and pathways activated by both the viruses were qualitatively similar but quantitatively different. Based on these findings, the differences in the host immune response might explain a part of the difference observed in the viral pathogenesis of high and low pathogenic influenza strains in ducks.
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19
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Murunya TS, Audithan S, Vijayakumar P. Mobile agent based secure internet business using access key hierarchy management scheme. Journal of Information and Optimization Sciences 2017. [DOI: 10.1080/02522667.2016.1264151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Vijayakumar P, Pandian MS, Ramasamy P. Vanadium oxide (VO) based low cost counter electrode in dye sensitized solar cell (DSSC) applications. AIP Conference Proceedings 2015. [DOI: 10.1063/1.4917678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
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22
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Nagarajan M, Vijayakumar P. Functional thoracic hyperkyphosis model for chronic subacromial impingement syndrome: an insight on evidence based "treat the cause" concept--a case study and literature review. J Back Musculoskelet Rehabil 2013; 26:227-42. [PMID: 23893137 DOI: 10.3233/bmr-130373] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 02/04/2023]
Abstract
Recent evidences suggest functional thoracic hyperkyphosis (FTH) could be a different approach in the management of subacromial impingement syndrome (SIS). This case study aims firstly with the development of evidence informed FTH model for SIS. Secondly this study aimed to develop well defined multimodal physical therapy intervention for FTH and its related mechanical consequences in elderly patient with chronic SIS. As a result, Level IV positive evidence was found in both the short and long-term pain and disability of chronic SIS, using FTH model with 26 months of follow-up.
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Affiliation(s)
- M Nagarajan
- Faculty of Health and Life Sciences, INTI International University, Laureate International Universities, Nilai, Malaysia
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Vijayakumar P, Nagarajan M, Ramli A. Multimodal physiotherapeutic management for stage-IV osteitis pubis in a 15-year old soccer athlete: a case report. J Back Musculoskelet Rehabil 2013; 25:225-30. [PMID: 23220803 DOI: 10.3233/bmr-2012-0337] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 02/07/2023]
Abstract
Osteitis pubis among soccer athletes is a disabling painful condition and it is difficult to manage without integrating a multimodal treatment approach. There is limited scientific evidence on the effectiveness of exercise in treating Osteitis pubis especially when it progress to a chronic painful condition. The purpose of this case report is to discuss the successful multimodal physiotherapeutic management for a 15-year old soccer athlete diagnosed with stage-IV Osteitis pubis. Land and water based active core muscle strengthening exercises, Proprioceptive neuromuscular facilitation techniques (PNF) and Manual Therapy are some of the essential components incorporated in multimodal intervention approach with emphasis to water based strength and endurance training exercises. The athlete was able to make progress to a successful recovery from his chronic painful condition and accomplished the clearly established clinical outcomes during each phase of rehabilitation.
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Affiliation(s)
- P Vijayakumar
- Faculty of Allied Health Sciences, National University Malaysia, Kuala Lumpur, Malaysia.
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24
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Vijayakumar P, Dutt T, Singh M, Pandey H. Effect of heat ameliorative measures on the biochemical and hormonal responses of buffalo heifers. Journal of Applied Animal Research 2011. [DOI: 10.1080/09712119.2011.607700] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Abstract
The fetus and the neonate are particularly vulnerable to injury caused directly by immunologic mechanisms or inflicted by infectious agents that take advantage of their relatively immature and inexperienced immune system. With increasing survival of high-risk neonates in the surfactant era, prevention/treatment of sepsis and chronic lung disease (CLD) has emerged as an area of priority in neonatal research. Considering the role of inflammatory mediators in the pathogenesis of sepsis and CLD, the clinical application of immunomodulator therapy to neonatology is perhaps more important at present than ever. Advances in molecular biology and immunology have led to development of newer immune modulator therapies that are directed towards specific cells or cytokines rather than resulting in a general suppression of the immune response. Failure of promising, newer immunomodulator therapies in sepsis trials in adults has, however, clearly documented the difficulties in diagnosing/correcting the imbalance between pro- and anti-inflammatory responses. As in the case of sepsis, development of a single magic bullet for prevention/management of a multi-factorial illness like CLD may be difficult, as prevention of prematurity - the single most important high-risk factor for CLD - is an unachievable goal at present. As new frontiers are being explored, older, well-established therapies like antenatal anti-D immunoglobulin prophylaxis continue to emphasize the tremendous potential of immunomodulator therapy in neonatology/perinatology. The current immunomodulators/immunotherapeutic agents with established/potential clinical applications in the perinatal period are reviewed.
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MESH Headings
- Adjuvants, Immunologic/physiology
- Adjuvants, Immunologic/therapeutic use
- Chronic Disease
- Cromolyn Sodium/immunology
- Cromolyn Sodium/therapeutic use
- Female
- Glucocorticoids/immunology
- Glucocorticoids/therapeutic use
- Hematopoietic Cell Growth Factors/immunology
- Hematopoietic Cell Growth Factors/therapeutic use
- Humans
- Immunoglobulins/immunology
- Immunoglobulins/therapeutic use
- Immunoglobulins, Intravenous/immunology
- Immunoglobulins, Intravenous/therapeutic use
- Infant, Newborn
- Infant, Newborn, Diseases/drug therapy
- Infant, Newborn, Diseases/immunology
- Lung Diseases/drug therapy
- Lung Diseases/immunology
- Methylene Blue/therapeutic use
- Milk, Human/immunology
- Neutrophils/immunology
- Neutrophils/transplantation
- Pentoxifylline/immunology
- Pentoxifylline/therapeutic use
- Pregnancy
- Rho(D) Immune Globulin/immunology
- Rho(D) Immune Globulin/therapeutic use
- Sepsis/drug therapy
- Sepsis/immunology
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Affiliation(s)
- S Patole
- Department of Neonatology, Kirwan Hospital for Women, Townsville, Queensland, Australia
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27
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Abstract
It is reasonable to assume that an umbilical cord stained green is due to the baby having passed meconium in utero. We describe a newborn baby in whom there was a delay in diagnosing an imperforate anus because the baby's umbilical cord was stained green with bile and it was assumed that the baby had passed meconium in utero.
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Affiliation(s)
- P Vijayakumar
- Department of Neonatology, Kirwan Hospital for Women, Thuringowa, Great Barrier Reef, Tounsville, QLD 4817, Australia
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30
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Abstract
A simple adsorption and elution of the trehalase of Trichoderma reesei on bentonite increased the specific activity 70-80 times, with a recovery of 90%. This alpha,alpha-trehalase has an optimum pH of 4.4, a pl of 5.7, a Km of 3.1 X 10(-3) M, and a specific activity of 50 mumol/mg. min-1.
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31
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Sternberg D, Vijayakumar P, Reese ET. beta-Glucosidase: microbial production and effect on enzymatic hydrolysis of cellulose. Can J Microbiol 1977; 23:139-47. [PMID: 837251 DOI: 10.1139/m77-020] [Citation(s) in RCA: 271] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The enzymatic conversion of cellulose is catalyzed by a multiple enzyme system. The Trichoderma enzyme system has been studied extensively and has insufficient beta-glucosidase (EC 3.2.1.21) activity for the practical saccharification of celluose. The black aspergilli (A. niger and A. phoenicis) were superior producers of beta-glucosidase and a method for production of this enzyme in liquid culture is presented. When Trichoderma cellulase preparations are supplemented with beta-glucosidase from Aspergillus during practical saccharifications, glucose is the predominant product and the rate of saccharification is significantly increased. The stimulatory effect of beta-glucosidase appears to be due to the removal of inhibitory levels of cellobiose.
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