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Reddy NV, Satyanarayana BM, Sivasankar S, Pragathi D, Subbaiah KV, Vijaya T. Eco-friendly synthesis of silver nanoparticles using leaf extract of Flemingia wightiana: spectral characterization, antioxidant and anticancer activity studies. SN Appl Sci 2020. [DOI: 10.1007/s42452-020-2702-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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Rammohan A, Gunasekar D, Reddy NV, Vijaya T, Deville A, Bodo B. Structure Elucidation and Antioxidant Activity of the Phenolic Compounds from Rhynchosia suaveolens. Nat Prod Commun 2019. [DOI: 10.1177/1934578x1501000418] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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] Open
Abstract
A new benzophenone, 2-hydroxy-3,4-dimethoxybenzophenone (1), together with a known C-glycosylxanthone, mangiferin (2) and two known C-glycosylflavones, isovitexin (3) and isoorientin (4), were isolated from the flowers of Rhynchosia suaveolens DC. (Fabaceae). The structure of the new compound (1) and the known compounds (2-4) were elucidated by extensive 1D and 2D NMR spectral studies. The plant extracts, as well as the isolated compounds, were evaluated for their total phenolic content (TPC), total flavonoid content (TFC) and DPPH radical scavenging activity. Among the isolated compounds, mangiferin (2) and isoorientin (4) showed significant radical scavenging activity comparable with that of ascorbic acid.
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Affiliation(s)
- Aluru Rammohan
- Natural Products Division, Department of Chemistry, Sri Venkateswara University, Tirupati-517502, India
| | - Duvvuru Gunasekar
- Natural Products Division, Department of Chemistry, Sri Venkateswara University, Tirupati-517502, India
| | | | - Tartte Vijaya
- Department of Botany, Sri Venkateswara University, Tirupati-517502, India
| | - Alexandre Deville
- Laboratoire de Chimie et Biochimie des Substances Naturelles, USM 0502 MNHN-UMR 5154, CNRS, 63 rue Buffon, Paris 75005, France
| | - Bernard Bodo
- Laboratoire de Chimie et Biochimie des Substances Naturelles, USM 0502 MNHN-UMR 5154, CNRS, 63 rue Buffon, Paris 75005, France
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Venkateswarulu N, Shameer S, Bramhachari PV, Basha SKT, Nagaraju C, Vijaya T. Isolation and characterization of plumbagin (5- hydroxyl- 2- methylnaptalene-1,4-dione) producing endophytic fungi Cladosporium delicatulum from endemic medicinal plants: Isolation and characterization of plumbagin producing endophytic fungi from endemic medicinal plants. ACTA ACUST UNITED AC 2018; 20:e00282. [PMID: 30294561 PMCID: PMC6171049 DOI: 10.1016/j.btre.2018.e00282] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 09/18/2018] [Accepted: 09/24/2018] [Indexed: 01/08/2023]
Abstract
Diversity of endophytic fungi from endemic medicinal plants in Eastern Ghats. Molecular identification and anti-microbial activity of isolated endophytic cultures. GCMS analysis and compound identification of potential crud extract. Characterization of purified fraction using FTIR spectroscopy, MS and NMR. Potentially inhibition of tested pathogens by identified compound 5-hydroxy-2-methylnaphthalene-1, 4-Dione.
The rationale of the present study was to isolate and identify endophytic fungi from endemic medicinal plants in Eastern Ghats and screened for antimicrobial potential of isolated fungal crude extracts. A total of 329 endophytic strains were isolated from 600 infected leaves and stem cuttings of endemic plants. The diversity and species richness was analyzed statistically and found to be higher in leaf segments than in stem segments. From isolated fungal strains, Cladosporium delicatulum was identified using molecular identification methods and selected as the most potent plumbagin-producing endophytic strain. Further the isolation and structural characterization of endophytic fungal plumbagin (5-hydroxyl-2-methylnaptalene-1,4-dione) was purified and confirmed through spectroscopy analysis. The molecular weight was determined as m/z 188 in positive mode by ESI-MS, which confirmed to be plumbagin which potentially inhibited all tested pathogens, therefore the endophytic fungal plumbagin from the current study possesses important biological activities against pathogens.
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Affiliation(s)
- N Venkateswarulu
- Department of Botany, Sri Venkateswara University, Tirupati, 517502, A.P, India
| | - S Shameer
- Nanotechnology Laboratory, IFT, RARS, ANGRAU, Tirupati, 517502, A.P, India
| | - P V Bramhachari
- Department of Biotechnology, Krishna University, Machilipatnam, 521001, A.P, India
| | - S K Thaslim Basha
- Department of Chemistry, Sri Venkateswara University, Tirupati, 517502, A.P, India
| | - C Nagaraju
- Department of Chemistry, Sri Venkateswara University, Tirupati, 517502, A.P, India
| | - T Vijaya
- Department of Botany, Sri Venkateswara University, Tirupati, 517502, A.P, India
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Madhu Sekhar M, Nagarjuna U, Padmavathi V, Padmaja A, Reddy NV, Vijaya T. Synthesis and antimicrobial activity of pyrimidinyl 1,3,4-oxadiazoles, 1,3,4-thiadiazoles and 1,2,4-triazoles. Eur J Med Chem 2017; 145:1-10. [PMID: 29310025 DOI: 10.1016/j.ejmech.2017.12.067] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [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: 08/26/2017] [Revised: 12/07/2017] [Accepted: 12/18/2017] [Indexed: 12/13/2022]
Abstract
A new class of methylthio linked pyrimidinyl 1,3,4-oxadiazoles, 1,3,4-thiadiazoles and 1,2,4-triazoles were prepared under conventional and ultrasound irradiation methods. All the compounds were obtained in higher yields and in shorter reaction times in ultrasound irradiation method when compared with the conventional method. The title compounds were tested for antimicrobial activity. The compounds 12c and 12f exhibited promising antibacterial activity against P. aeruginosa whereas the compounds 13c and 13f showed pronounced antifungal activity against A. niger.
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Affiliation(s)
- M Madhu Sekhar
- Department of Chemistry, Sri Venkateswara University, Tirupati 517 502, Andhra Pradesh, India
| | - U Nagarjuna
- Department of Chemistry, Sri Venkateswara University, Tirupati 517 502, Andhra Pradesh, India
| | - V Padmavathi
- Department of Chemistry, Sri Venkateswara University, Tirupati 517 502, Andhra Pradesh, India
| | - A Padmaja
- Department of Chemistry, Sri Venkateswara University, Tirupati 517 502, Andhra Pradesh, India.
| | - N Vasudeva Reddy
- Department of Biotechnology, Sri Venkateswara University, Tirupati 517 502, Andhra Pradesh, India
| | - T Vijaya
- Department of Botany, Sri Venkateswara University, Tirupati 517 502, Andhra Pradesh, India
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Thaslim Basha SK, N. Raju C, S. Rao D, Sudhamani H, Venkateswarlu N, Vijaya T. NbCl5 as an Expeditious Catalyst for the Synthesis of Quinoxalinyl and Dibenzodioxepinyl Phosphonates/Phosphinates via Michaelis-Arbuzov Reaction and their Biological Evaluation. LETT ORG CHEM 2016. [DOI: 10.2174/1570178613666160224010117] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Thaslim Basha S, Sudhamani H, Rasheed S, Venkateswarlu N, Vijaya T, Naga Raju C. Microwave-assisted neat synthesis of α-aminophosphonate/phosphinate derivatives of 2-(2-aminophenyl)benzothiazole as potent antimicrobial and antioxidant agents. PHOSPHORUS SULFUR 2016. [DOI: 10.1080/10426507.2016.1192629] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Shaik Thaslim Basha
- Department of Chemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| | - Hasti Sudhamani
- Department of Chemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| | - Syed Rasheed
- Department of Chemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| | - Nagam Venkateswarlu
- Department of Botany, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| | - Tartte Vijaya
- Department of Botany, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| | - Chamarthi Naga Raju
- Department of Chemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
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Chandra Mouli K, Pragathi D, Naga Jyothi U, Shanmuga Kumar V, Himalaya Naik M, Balananda P, Suman B, Seshadri Reddy V, Vijaya T. Leptin inhibitors from fungal endophytes (LIFEs): Will be novel therapeutic drugs for obesity and its associated immune mediated diseases. Med Hypotheses 2016; 92:48-53. [PMID: 27241254 DOI: 10.1016/j.mehy.2016.04.032] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 04/11/2016] [Accepted: 04/18/2016] [Indexed: 12/20/2022]
Abstract
Treatment of obesity and its associated immune mediated diseases is challenging due to impaired function of leptin system. Thus leptin is providing an interesting target for therapeutic intervention. Leptin, an adipose tissue-derived adipokine, displays a variety of immune functions, and regulate both innate and adaptive immune responses. The increased secretion of leptin (hyperleptinemia) and production of proinflammatory cytokines has been implicated in the pathogenesis of obesity-related immune diseases such as diabetes mellitus, hypertension, atherosclerosis, cancer, systemic lupus erythematosus, rheumatoid arthritis, crohn's disease and multiple sclerosis. These disorders are managed through antibiotics and by cytokines replacement. However, the effectiveness of cytokines coupled to the complexity of the cytokine network leads to severe side-effects, which can still occur after careful preclinical evaluation. In addition, synthetic immunotherapeutics carries a degree of risk, is time-consuming and expensive. Hence, the complexity of existing therapy and adverse effects emphasizes the need of an alternative approach for the management of immune dysfunction associated with obesity and its related diseases. For the aforementioned diseases that are related to leptin overabundance, new drugs blocking leptin signaling need to be generated. The research on the discovery of clinically important novel compounds from natural source is expanding due to their safety and no side effect. The fungal endophytes are the microbes that colonize internal tissue of plants without causing negative effects to the host. They produce plethora of substances of potential use to modern medicinal and pharmaceutical industry. The increasing body of evidence associated with application of bioactive metabolites derived from fungal endophytes in diverse disease states merits its use as therapeutic drugs. In particular, the saponins have been extensively proved to modulate the immune system, which has raised a significant interest in their potential as immunomodulators. Thus, our hypothesis is that the saponins derived from fungal endophytes can be explored as clinical applicable leptin inhibitors for treating immune mediated diseases.
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Affiliation(s)
- K Chandra Mouli
- Department of Biotechnology, Vikrama Simhapuri University, Nellore, Andhra Pradesh, India.
| | - D Pragathi
- Department of Biotechnology, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| | - U Naga Jyothi
- Department of Botany, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| | - V Shanmuga Kumar
- Department of Biotechnology, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| | - M Himalaya Naik
- Department of Biotechnology, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| | - P Balananda
- Department of Physiology, GIMSR, GITAM University, Visakhapatnam, Andhra Pradesh, India
| | - B Suman
- Department of Biochemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| | - V Seshadri Reddy
- Department of Biochemistry, BPS Govt Medical College for Women, Sonepat, Haryana, India
| | - T Vijaya
- Department of Botany, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
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Mahesh B, Mohan G, Kabeer SA, Venkateswarulu N, Vijaya T, Reddy CS. Synthesis of Novel 2-Amino- N-hydroxybenzamide Antimicrobials. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2014.989450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Bellam Mahesh
- Department of Chemistry, Sri Venkateswara University, Tirupati, India
| | - Gundluru Mohan
- Department of Chemistry, Sri Venkateswara University, Tirupati, India
| | | | | | - Tartte Vijaya
- Department of Botany, Sri Venkateswara University, Tirupati, India
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Rammohan A, Gunasekar D, Reddy NV, Vijaya T, Devillee A, Bodo B. Structure elucidation and antioxidant activity of the phenolic compounds from Rhynchosia suaveolens. Nat Prod Commun 2015; 10:609-611. [PMID: 25973488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
A new benzophenone, 2-hydroxy-3,4-dimethoxybenzophenone (1), together with a known C-glycosylxanthone, mangiferin (2) and two known C-glycosylflavones, isovitexin (3) and isoorientin (4), were isolated from the flowers of Rhynchosia suaveolens DC. (Fabaceae). The structure of the new compound (1) and the known compounds (2-4) were elucidated by extensive 1D and 2D NMR spectral studies. The plant extracts, as well as the isolated compounds, were evaluated for their total phenolic content (TPC), total flavonoid content (TFC) and DPPH radical scavenging activity. Among the isolated compounds, mangiferin (2) and isoorientin (4) showed significant radical scavenging activity comparable with that of ascorbic acid.
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Mahaboob Basha N, Seenaiah D, Padmaja A, Padmavathi V, Bhargav DS, Vijaya T. Synthesis and Antioxidant Activity of Bis and Tris Heterocycles. Arch Pharm (Weinheim) 2013; 347:54-67. [DOI: 10.1002/ardp.201300290] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 08/31/2013] [Accepted: 09/05/2013] [Indexed: 11/08/2022]
Affiliation(s)
| | - Dandu Seenaiah
- Department of Chemistry; Sri Venkateswara University; Tirupati Andhra Pradesh India
| | - Adivireddy Padmaja
- Department of Chemistry; Sri Venkateswara University; Tirupati Andhra Pradesh India
| | | | | | - Tartte Vijaya
- Department of Botany; Sri Venkateswara University; Tirupati Andhra Pradesh India
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Reddy RMI, Latha PB, Vijaya T, Rao DS. The saponin-rich fraction of a Gymnema sylvestre R. Br. aqueous leaf extract reduces cafeteria and high-fat diet-induced obesity. ACTA ACUST UNITED AC 2012; 67:39-46. [PMID: 22486040 DOI: 10.1515/znc-2012-1-206] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We examined the antiobesity effect of a saponin-rich fraction of a Gymnema sylvestre R. Br. aqueous leaf extract (SGE) using cafeteria and high-fat diet-induced obese rats for a period of eight weeks. SGE was orally administered at a dose of 100 mg/kg body weight once a day to the treatment group. It significantly decreased the body weight, food consumption, visceral organs weight, and the levels of triglycerides, total cholesterol, low-density lipoproteins, very low-density lipoproteins, atherogenic index, glucose, and increased the levels of high-density lipoproteins. There was no significant difference with respect to all parameters of the study in case of normal (N) diet and N diet + SGE rats. In vitro, SGE inhibited the pancreatic lipase activity. The present study gave clear evidence that the SGE has a significant antiobese action, supporting its use in traditional medicine, and can be used as a substitute for synthetic drugs.
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Affiliation(s)
- Rama Manohar I Reddy
- Department of Biotechnology, Sri Venkateswara University, Tirupati-517 502, A. P., India
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Reddy RMI, Latha PB, Vijaya T, Rao DS. The Saponin-Rich Fraction of a Gymnema sylvestre R. Br. Aqueous Leaf Extract Reduces Cafeteria and High-Fat Diet-Induced Obesity. Z NATURFORSCH C 2012. [DOI: 10.5560/znc.2012.67c0039] [Citation(s) in RCA: 5] [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: 11/24/2022]
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Vijaya T, Srivasuki KP. Viability of Pisolithus tinctorius encased in calcium alginate gel. Mycologia 1999. [DOI: 10.1080/00275514.1999.12061097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- T. Vijaya
- Dept. of Biotechnology, Sri Venkateswara University, Tirupati—517 502, A.P.; and Biotechnology Centre for Tree Improvement, Tirupati—517 507, A.P., India
| | - K. P. Srivasuki
- Dept. of Biotechnology, Sri Venkateswara University, Tirupati—517 502, A.P.; and Biotechnology Centre for Tree Improvement, Tirupati—517 507, A.P., India
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