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1.
BMC Infect Dis ; 20(1): 898, 2020 Nov 27.
Artigo em Inglês | MEDLINE | ID: mdl-33246440

RESUMO

BACKGROUND: Plasma proteins are known to interfere the drug metabolism during therapy. As limited information is available regarding the role of plasma proteins in HIV drug resistance during ART in HIV/AIDS patients, the present study aimed to identify and characterize the differentially expressed plasma proteins in the drug resistant and drug respondent groups of HIV-1 infected patients with > 6 years of first line ART. METHODS: Four-drug resistant (treatment failure) and four-drug respondent (treatment responder) patients were selected for plasma proteomic analysis based on viral load and drug resistance associated mutations from a cohort study designed on the first line ART patients who were enrolled in the antiretroviral therapy center, Sarojini Naidu Medical College, Agra, India from December 2009 to November 2016. After depleting high abundant proteins, plasma proteins were resolved using two-dimensional gel electrophoresis on IPG strips, pH range of 3-10. Spots were selected in the gel based on the density of staining which was common in the drug resistant and drug respondent groups separately. The fold change of each spot was calculated using image-J. Each protein spot was identified using the matrix assisted laser desorption/ionization-time of flight/time of flight (MALDI-TOF/TOF) after tryptic digestion. Peptide peaks were identified through flex analysis version 3.3, and a search against a protein data base using the internal Mascot. Gene ontology study was completed through STRING v.11 and Panther15.0. RESULTS: Out of eight spots from 2D gel samples analyzed by MALDITOF/TOF, two proteins were found to have significant score (> 56) after Flex analysis. These two proteins were identified to be apolipoprotein A1 and serotransferrin. The fold change expression of these two proteins were analyzed in drug resistant and drug respondent group. Apolipoprotein-A1 and serotransferrin were observed to be expressed 1.76 and 1.13-fold more respectively in drug respondent group compared to drug resistant group. The gene ontology analysis revealed the involvement of these two proteins in various important physiological processes. CONCLUSION: Apolipoprotein A-I and serotransferrin were found to be expressed more in drug respondent group compared to drug resistant group.


Assuntos
Antirretrovirais/uso terapêutico , Apolipoproteína A-I/genética , Regulação da Expressão Gênica , Infecções por HIV/sangue , Infecções por HIV/tratamento farmacológico , Transferrina/genética , Apolipoproteína A-I/sangue , Proteínas Sanguíneas/genética , Estudos de Coortes , Resistência a Medicamentos/genética , HIV-1 , Humanos , Índia
2.
Clin Proteomics ; 13: 15, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27429603

RESUMO

BACKGROUND: An early, reliable and noninvasive method of early pregnancy diagnosis is prerequisite for efficient reproductive management in dairy industry. The early detection of pregnancy also help in to reduce the calving interval and rebreeding time which is beneficial for industries as well as farmers. The aim of this work is to identify potential biomarker for pregnancy detection at earlier stages (16-25 days). To achieve this goal we performed DIGE and LFQ for identification of protein which has significant differential expression during pregnancy. RESULTS: DIGE experiment revealed a total of eleven differentially expressed proteins out of which nine were up regulated having fold change ≥1.5 in all time points. The LFQ data analysis revealed 195 differentially expressed proteins (DEPs) out of 28 proteins were up-regulated and 40 down regulated having significant fold change ≥1.5 and ≤0.6 respectively. Bioinformatics analysis of DEPs showed that a majority of proteins were involved in regulation of leukocyte immunity, endopeptidase inhibitor activity, regulation of peptidase activity and polysaccharide binding. CONCLUSION: This is first report on differentially expressed protein during various time points of pregnancy in cow to our best knowledge. In our work, we identified few proteins such MBP, SERPIN, IGF which were differentially expressed and actively involved in various activities related to pregnancy such as embryo implantation, establishment and maintenance of pregnancy. Due to their involvement in these events, these can be considered as biomarker for pregnancy but further validation of is required.

3.
Indian J Ophthalmol ; 70(5): 1549-1553, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35502024

RESUMO

Purpose: To evaluate and compare the efficacy of autologous platelet-rich plasma (aPRP) eye drop and artificial tear (AT) eye drop in moderate to severe symptomatic dry eye disease (DED). Methods: This prospective interventional study included 121 eyes of 61 patients of moderate to severe DED. Patients were divided into aPRP (31 patients) and AT (30 patients) group. Ocular Surface Disease Index (OSDI) score, tear film breakup time (TBUT) (s), corneal fluorescein staining (CFS) score, and Schirmer test score (mm) of both the groups were evaluated and compared pre-treatment and post-treatment at the end of 3 months. Results: The mean age of the aPRP group and AT group was 52.8 ± 12.8 years and 55.5 ± 13.4 years, respectively. At the end of 3 months, OSDI score reduced more in the aPRP group as compared to AT group, and the mean difference (-22.7) was statistically significant (P < 0.001). There was no significant difference in post-treatment Schirmer test score between the two groups (P = 0.44). Post-treatment improvement in TBUT and CFS score in the aPRP group was significantly higher in the aPRP group as compared to that in the AT group (P < 0.05). Bruising at the site of blood withdrawal was noted in two patients in the aPRP group. Conclusion: aPRP is safe and more effective than AT in treating patients with moderate to severe symptomatic DED.


Assuntos
Síndromes do Olho Seco , Plasma Rico em Plaquetas , Adulto , Idoso , Síndromes do Olho Seco/diagnóstico , Síndromes do Olho Seco/terapia , Humanos , Lubrificantes Oftálmicos , Pessoa de Meia-Idade , Estudos Prospectivos
4.
Indian J Ophthalmol ; 70(4): 1365-1370, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-35326056

RESUMO

Purpose: To study facial nerve palsy (FNP) in post-COVID-19-mucormycosis patients and its ocular complications, report different presentations of FNP in such patients, and propose its etiopathogenesis based on presentation and clinico-radiologic localization. Methods: A prospective cohort study was carried out in patients of post-COVID-19-mucormycosis who presented at our tertiary center, over a period of 3 months. Motor and sensory examination of the facial nerve was done to diagnose FNP and localize the lesion clinically. Slit-lamp examination was done for grading corneal involvement. MRI brain, orbit, and paranasal sinuses (PNS) with contrast were studied to find involvement along the facial nerve. It was assessed whether this site of lesion corresponded with clinical localization. Data were analyzed using the percentage of total cases and Fisher's test. Results: A total of 300 patients with post-COVID-19 mucormycosis were examined, of which 30 (10%) patients were found to have FNP. All were lower motor neuron (LMN) type and were associated with corneal complications. The most common site clinically was distal to the chorda tympani (66.66%) and radiologically was infratemporal (IT) fossa (63.4%). The clinical localization significantly correlated with the radiological findings (P = 0.012). Twenty percent of patients showed incomplete involvement of facial muscles. Conclusion: FNP was found to be of LMN type. The most common site of insult was IT fossa. There was a good clinico-radiological correspondence of lesions. Isolated lesions were also found along the peripheral nerve course, presenting as incomplete facial palsy. Recognition of FNP in post-COVID-19 mucormycosis, in all its variable forms, is important to manage corneal complications.


Assuntos
COVID-19 , Paralisia Facial , Mucormicose , COVID-19/complicações , COVID-19/diagnóstico , Paralisia Facial/diagnóstico , Paralisia Facial/etiologia , Humanos , Imageamento por Ressonância Magnética , Mucormicose/complicações , Mucormicose/diagnóstico , Estudos Prospectivos
5.
Bioorg Med Chem Lett ; 21(6): 1706-9, 2011 Mar 15.
Artigo em Inglês | MEDLINE | ID: mdl-21320782

RESUMO

An efficient one step synthesis of new 2-hydroxymethylisoflavone is reported. A series of deoxybenzoin was subjected to cyclization with glyoxal in the presence of basic condition (KOH/EtOH) to afford the 2-hydroxymethyl isoflavone. The structures of compounds 5a-g were confirmed by NMR experiments including (1)H, (13)C, HMBC, HSQC and COSY. These compounds were assessed for stimulation of osteoblast function using primary culture of rat calvarial osteoblasts in vitro. Compounds 5a, 5d, 5f and 5g were potent in stimulating differentiation of osteoblasts as assessed by measuring alkaline phosphatase (ALP) activity. Besides, effect of these analogs was also seen on the transcript levels of osteogenic genes like Runx-2, osteocalcin and Bone morphogenetic protein-2 (BMP-2), involved in osteoblast differentiation and mineralization. Based on quantitative PCR data, compound 5f was found to be the potent followed by 5d. Compound 5f robustly increased the mRNA levels of Runx-2 (8.0 fold), BMP-2 (∼2 fold) and osteocalcin (∼2.0 fold) in osteoblasts. Collectively, we demonstrate osteogenic activity of the novel 2-hydroxymethyl isoflavones with 5f having the most potent activity.


Assuntos
Isoflavonas/síntese química , Osteogênese/efeitos dos fármacos , Animais , Células Cultivadas , Técnicas In Vitro , Isoflavonas/farmacologia , Espectroscopia de Ressonância Magnética , Osteoblastos/citologia , Osteoblastos/metabolismo , Ratos
6.
Bioorg Med Chem Lett ; 21(1): 228-33, 2011 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-21129962

RESUMO

Various phenolic C-glycosides were evaluated for their in vitro and in vivo antihyperglycemic activity employing glucose uptake by rat muscle cell lines (L-6) and low dosed-streptozotocin-induced diabetic rats, respectively. Some of phenolic C-glycosides were isolated from Pterocarpus marsupium and Ulmus wallichiana and other were synthesized by unprotected sugar and phloroacetophenone using Sc(OTf)(3) in aqueous ethanol. Eight among tested compounds showed significant lowering of blood glucose level on low dosed-streptozotocin-induced diabetic rats. The compound 24 lowered the blood glucose levels by 34.9% and 33.6% during 0-5h and 0-24h, respectively, at the dose of 25mg/kg body weight which is comparable to standard antidiabetic drug metformin.


Assuntos
Chalconas/química , Glucosídeos/química , Hipoglicemiantes/síntese química , Fenóis/química , Animais , Glicemia/metabolismo , Linhagem Celular , Chalconas/isolamento & purificação , Chalconas/uso terapêutico , Diabetes Mellitus Experimental/induzido quimicamente , Diabetes Mellitus Experimental/tratamento farmacológico , Glucosídeos/síntese química , Glucosídeos/uso terapêutico , Hipoglicemiantes/química , Hipoglicemiantes/uso terapêutico , Pterocarpus/química , Ratos , Relação Estrutura-Atividade , Ulmus/química
7.
Bioorg Med Chem Lett ; 21(8): 2232-7, 2011 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-21435872

RESUMO

16-Dehydropregnenolone undergoes a smooth annulation with propan-1-amine and aromatic aldehydes. Several amine derivatives of 16- dehydropregnenolone were synthesized and evaluated as inhibitors of DPP-IV. The structures of compounds were confirmed by (1)H, (13)C, NMR and mass spectral analysis. Among 17 compounds evaluated only five compounds 1, 9, 13, 15 and 16 demonstrated significant inhibition of DPP. This study suggest that introduction of appropriate substituents in the 16-dehydropregnenolone plays an important role in DPP-IV inhibitory activity.


Assuntos
Aldeídos/química , Compostos Aza/química , Dipeptidil Peptidase 4/química , Inibidores da Dipeptidil Peptidase IV/química , Pregnenolona/análogos & derivados , Aminas/química , Ciclização , Dipeptidil Peptidase 4/metabolismo , Inibidores da Dipeptidil Peptidase IV/síntese química , Inibidores da Dipeptidil Peptidase IV/farmacologia , Pregnenolona/síntese química , Pregnenolona/química , Pregnenolona/farmacologia
8.
Indian J Ophthalmol ; 69(12): 3685-3689, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34827023

RESUMO

PURPOSE: Mucormycosis is a life-threatening infection that has made sudden comeback in COVID-19 era. We conducted this study to determine demography, site of involvement, management, and outcome in these patients. METHODS: All cases presenting with signs and symptoms of mucormycosis were thoroughly evaluated and confirmed diagnosis was made on demonstration of fungi in the tissue (or body fluids) either by direct microscopy and/or culture. Patients underwent computerized tomography scan for paranasal sinuses and magnetic resonance imaging scan with contrast orbit and brain to know extent of disease. RESULTS: 540 proven cases of mucormycosis were included. Most common age group affected was 41-50 years with male preponderance (69%). Sinonasal was the most common site of involvement in mucormycosis (100%), followed by orbital (51.85%), cerebral (9.44%), cutaneous (1.85%), and pulmonary (0.18%). Most common presentation was periocular and facial swelling (28%). 97.96% patients had associated diabetes and 89.44% patients had history of COVID-19 with concurrent steroids use (84.85%), higher antibiotics (82.59%), oxygen therapy (52.40%), remdesivir (28.89%), and biological agents (2.56%). Duration from COVID-19 positivity to presentation of mucormycosis was 22.56 days, while 4.44% patients had coexisting COVID-19 with mucormycosis. The mortality rate was 9.25% (50/540). CONCLUSION: Timely diagnosis and appropriate management can ameliorate the consequences of mucormycosis. With the third wave of COVID-19 coming, epidemiological study to identify risk factors and possible management options can help physicians to develop the treatment strategy.


Assuntos
COVID-19 , Mucormicose , Doenças Orbitárias , Adulto , Antifúngicos/uso terapêutico , Humanos , Masculino , Pessoa de Meia-Idade , Mucormicose/diagnóstico , Mucormicose/tratamento farmacológico , Mucormicose/epidemiologia , Doenças Orbitárias/diagnóstico , Doenças Orbitárias/tratamento farmacológico , Doenças Orbitárias/epidemiologia , SARS-CoV-2
9.
Ticks Tick Borne Dis ; 12(6): 101818, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34537543

RESUMO

Rhipicephalus microplus is posing a serious threat to productive animal husbandry. Excessive use of synthetic chemicals in tick management has led to the development of resistant tick populations. Characterization of resistance to deltamethrin, cypermethrin, coumaphos and ivermectin in ticks is necessary to develop a suitable and sustainable control strategy. Based on adult immersion test and larval packet test, the resistance ratios (RR50) for adults and larvae of R. microplus populations from two Indian states ranged from 3.8 to 19.4 and 1.35-25.0 against deltamethrin, 0.061-26.3 and 0.22-19.2 against cypermethrin, and 0.2-9.5 and 0.01-3.1 against coumaphos, respectively, were recorded. Moreover, the RR50 for adults ranged from 0.212 to 3.87 against ivermectin. The RR50 for different acaricides was significantly (p<0.01) correlated with esterases, Glutathione S-transferase and monooxygenase activity. A point mutation at the 190th position of the domain II S4-5 linker region of the sodium channel gene in synthetic pyrethroids (SP) resistant populations was also detected. An antitick natural formulation prepared from the plant Azeratum conyzoides and containing two major compounds, Precocene-I (7­methoxy-2, 2-dimethyl 2H-chromene) and Precocene II (6, 7-dimethoxy-2, 2-dimethyl- 3-chromene), was developed and tested against the resistant ticks. The LC50 values of the natural formulation against the resistant populations were in the range of 4.31-5.33% irrespective of their RR50 values. Multi-acaricide resistant populations of R. microplus are established in India and the A. conyzoides based natural formulation can be used for its management.


Assuntos
Acaricidas/farmacologia , Ageratum/química , Rhipicephalus/efeitos dos fármacos , Animais , Cumafos/farmacologia , Resistência a Medicamentos , Feminino , Índia , Ivermectina/farmacologia , Larva/efeitos dos fármacos , Larva/crescimento & desenvolvimento , Masculino , Nitrilas/farmacologia , Piretrinas/farmacologia , Rhipicephalus/crescimento & desenvolvimento
10.
3 Biotech ; 10(9): 412, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32904477

RESUMO

Sorghum is a C4 cereal grain crop which is well adapted to harsh environment. It is a potential model for gaining better understanding of the molecular mechanism due to its wider adaptability to abiotic stresses. In this study, protein extraction was standardized using different methods to study the electrophoretic pattern of sorghum leaves under different salinity levels. The extraction of soluble protein with lysis buffer, followed by its clean-up was found to be the most effective method. The different profiles of salt-responsive proteins were analyzed in G-46 and CSV 44F sorghum genotypes based on their tolerance behavior towards salinity. The kafirin level also changed depending upon the concentration and exposure time to salts suggesting the stored proteins as energy source under stress conditions. The relative expression of salt-responsive genes was studied using Reverse Transcriptase-Polymerase Chain Reaction (RT-PCR) which might be used as a molecular screening tool for identification of salt-tolerant genotypes in affected areas. The validated responses were examined in terms of metabolic changes and the expression of stress-induced proteins-viz. heat shock proteins (hsp) via immunoblotting assay. The results showed that the two sorghum genotypes adopted distinct approaches in response to salinity, with G-46 performing better in terms of leaf function. Also, we have standardized different protein extraction methods followed by their clean-up for electrophoretic profiling.

11.
Indian J Ophthalmol ; 68(6): 1115-1119, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32461443

RESUMO

Purpose: This purpose of this study was to find the association between severity of visual impairment and retinal nerve fiber layer (RNFL) thickness loss in different demyelinating diseases using optical coherence tomography (OCT) and, simultaneously, assess the fellow eye for subclinical RNFL thickness loss. Methods: This cross-sectional, observational study included 60 eyes of 30 patients above the age of 20 years with diagnosed cases of multiple sclerosis (MS), neuromyelitis optica (NMO), and clinically isolated syndrome (CIS) who had history of (h/o) optic neuritis (ON) attack were included. Participants included in the study group underwent best-corrected visual acuity (BCVA) measurement, color perception, swinging flashlight test, slit-lamp examination, and dilated fundus examination (DFE). RNFL thickness was measured using spectral domain OCT (SD-OCT) (Optovue RTVue-V6.11 A Fourier). Intergroup analysis of RNFL thickness was done using a Chi-square test (P < 0.05 was considered significant). Spearman's rank correlation coefficient (Spearman'sρ) was used for association (ρ < 0.963 was considered significant). Results: RNFL thickness was significantly reduced in patients with NMO than MS, while all patients of CIS had the highest RNFL thickening (P = 0.00048). Lower visual function scores correlated with reduced average overall RNFL thickness, and this association was statistically significant in affected (R = 0.942) and fellow eyes (R = 0.963). Conclusion: The severity of visual impairment significantly correlated with the severity of axonal loss in affected as well as the fellow eye. NMO is associated with more widespread axonal injury in the affected optic nerve. Hence, RNFL thickness is an indicator of the progression of visual impairment in demyelinating diseases and OCT can help distinguish the etiology and, therefore, may be useful as a surrogate marker of axonal involvement in demyelinating diseases.


Assuntos
Esclerose Múltipla , Neuromielite Óptica , Neurite Óptica , Adulto , Estudos Transversais , Humanos , Neurite Óptica/diagnóstico , Retina , Tomografia de Coerência Óptica , Adulto Jovem
12.
Front Nutr ; 7: 150, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33072792

RESUMO

Milk serves as a mode of protection to neonate through transferring the host defense proteins from mother to offspring. It also guards the mammary gland against various types of infections. Along with the presence of six vital proteins, bovine milk (whey) contains a massive class of minor proteins, not all of which have been comprehensively reported. In this study, we performed an LC-MS/MS-based ultra-deep identification of the milk whey proteome of Indian zebu (Sahiwal) cattle. Three independent search engines that are Comet, Tandem, and Mascot-based analysis resulted in the discovery of over 6,210 non-redundant proteins commonly identified. Genome-wise mapping revealed that chromosome 1 showed a minimum expression of 14 proteins, whereas chromosome 19 expressed 250 maximum proteins in milk whey. These results demonstrate that milk proteome in Sahiwal cattle is quite complicated, and minor milk fractions play a significant role in host defense.

13.
Sci Rep ; 10(1): 9321, 2020 06 09.
Artigo em Inglês | MEDLINE | ID: mdl-32518370

RESUMO

Bovine milk is vital for infant nutrition and is a major component of the human diet. Bovine mastitis is a common inflammatory disease of mammary gland in cattle. It alters the immune profile of the animal and lowers the quality and yield of milk causing huge economic losses to dairy industry. The incidence of sub-clinical mastitis (SCM) is higher (25-65% worldwide) than clinical mastitis (CM) (>5%), and frequently progresses to clinical stage due to lack of sensitive and specific detection method. We used quantitative proteomics to identify changes in milk during sub-clinical mastitis, which may be potential biomarkers for developing rapid, non-invasive, sensitive detection methods. We performed comparative proteome analysis of the bovine milk, collected from the Indian hybrid cow Karan Fries. The differential proteome in the milk of Indian crossbred cows during sub-acute and clinical intramammary gland infection has not been investigated to date. Using high-resolution mass spectrometry-based quantitative proteomics of the bovine whey proteins, we identified a total of 1459 and 1358 proteins in biological replicates, out of which 220 and 157 proteins were differentially expressed between normal and infected samples. A total of 82 proteins were up-regulated and 27 proteins were down-regulated, having fold changes of ≥2 and ≤0.8 respectively. Among these proteins, overexpression of CHI3L1, LBP, GSN, GCLC, C4 and PIGR proteins was positively correlated with the events that elicit host defence system, triggering production of cytokines and inflammatory molecules. The appearance of these potential biomarkers in milk may be used to segregate affected cattle from the normal herd and may support mitigation measures for prevention of SCM and CM.


Assuntos
Biomarcadores/análise , Mastite Bovina/metabolismo , Proteínas do Leite/análise , Proteômica/métodos , Espectrometria de Massas em Tandem/métodos , Animais , Biomarcadores/metabolismo , Bovinos , Feminino , Mastite Bovina/diagnóstico , Leite/química , Leite/citologia , Proteínas do Leite/metabolismo , Mapas de Interação de Proteínas , Proteínas do Soro do Leite/análise
14.
Bioorg Med Chem Lett ; 19(16): 4684-7, 2009 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-19596573

RESUMO

Chemical investigation of Ulmus wallichiana stem bark resulted in isolation and identification of three new compounds (2S,3S)-(+)-3',4',5,7-tetrahydroxydihydroflavonol-6-C-beta-D-glucopyranoside (1), (2S,3S)-(+)-4',5,7-trihydroxydihydroflavonol-6-C-beta-D-glucopyranoside (3) and 3-C-beta-D-glucopyranoside-2,4,6-trihydroxymethylbenzoate (8), together with five known flavonoid-6-C-glucosides (2, 4-7). Their structures were elucidated using 1D and 2D NMR spectroscopic analysis. The absolute stereochemistry in compounds 1 and 3 were established with the help of CD data analysis and comparison with the literature data analysis. All the isolated compounds (1-8) were assessed for promoting the osteoblast differentiation using primary culture of rat osteoblast as an in vitro system. Compounds 1-3 and 5 significantly increased osteoblast differentiation as assessed by alkaline phosphatase activity.


Assuntos
Fosfatase Alcalina/metabolismo , Flavonoides/química , Glicosídeos/química , Osteoblastos/efeitos dos fármacos , Ulmus/química , Animais , Diferenciação Celular , Flavonoides/isolamento & purificação , Flavonoides/farmacologia , Glicosídeos/isolamento & purificação , Glicosídeos/farmacologia , Casca de Planta/química , Caules de Planta/química , Ratos , Estereoisomerismo
15.
J Biosci ; 34(2): 199-202, 2009 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-19550035

RESUMO

Agrobacterium strains harbour insertion sequences, which are known to transpose into genomes as well as into Ti plasmids. In this study we report the inactivation of a transgene due to transposition of the A. tumefaciens insertion sequence IS136. The transposition was discovered following transformation of plant tissues, although the fidelity of the binary vector was confirmed following transformation into Agrobacterium. Such transpositions are rare but can occur and it is thus important to check the fidelity of the binary vector at different times of Agrobacterium growth in order to avoid failure in achieving transgene expression.


Assuntos
Agrobacterium tumefaciens/genética , Plantas/microbiologia , Transgenes , Primers do DNA , Elementos de DNA Transponíveis , DNA Complementar/metabolismo , Genes Bacterianos , Vetores Genéticos , Modelos Genéticos , RNA/metabolismo , Transformação Bacteriana
16.
Pharmacogn Mag ; 14(54): 141-144, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29720821

RESUMO

BACKGROUND: Streblus asper, family Moraceae is well-known important medicinal plant used in the Indian system of medicine. In Ayurveda, stem bark of S. asper is recommended against elephantiasis for which there is still no any other effective medicine in the modern system of medicine. OBJECTIVES: In the present work, methanol extract (SAM) and its fractions of S. asper leave tested for in vitro anticancer activity against cancer cell lines (MCF-7, A-549, Hep-G2, and K-562) which claims its folklore importance in cancer and gas chromatography-mass spectrometry identification of extracts was also performed. MATERIALS AND METHODS: Shade dried plant material was extracted with methanol and fractionated sequentially with hexane, chloroform, and butanol. RESULTS: All tested extracts found highly effective against human lung cancer cell line (A-549) with IC50 <10 µg/mL. On Hep-G2 cancer cell line, only chloroform fraction are highly active with IC50 <10 µg/mL. Methanol and hexane fraction showed potent anticancer activity on K-562 cancer cell line with IC50 <10 µg/mL. CONCLUSION: Qualitative phytochemical analysis confirmed the presence of fatty acids, phytosterol, triterpenoids, polyol, sugar acid, aldehyde, diterpene, terpene, carboxylic compounds, acid and sugar in S. asper leaves extract. Topmost abundant compounds in SAM are α-D-glucopyranoside (10.60%), glycerol (7.96%), myo-inositol (4.90%), and butanedioic acid (3.30%). Hexane consists of the higher amount of hexadecanoic acid (18.07%), octadecanoic acid (7.39%), ß-sitosterol (4.50%), and α-D-glucopyranoside (4.03%). Higher component in chloroform extract is lupenyl acetate (11.25%). SUMMARY: All extracts of Streblus asper found potential anticancer activity against lung cancer cell line (A-549)Chloroform fraction is highly active on hepatoma cancer cell line (Hep-G2) whereas methanolic, and hexane fractions have highly cytotoxic potency against leukemia cancer cell line (K-562)Methanolic extract of S. asper is rich source of glycosides, fatty acids, and phytosterolIn Gas chromatography-mass spectrometry evaluation of S. asper ß-stigmasterol, ß-sitosterol, lycopene, and lupeol identified as an anticancer agent from previously reported literature. Abbreviations used: SRB: Sulforhodamine B assay; SAM: Methanol extract; SAH: Hexane extract; SAC: Chloroform extract.

17.
PLoS One ; 13(11): e0206143, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30403702

RESUMO

Pregnancy-associated glycoproteins (PAGs) are expressed during pregnancy by the trophoectodermal cells of fetus. Presence of PAGs in dam's circulation has been widely used in pregnancy diagnosis. The present study reports the identification and characterization of different PAG isoforms in buffalo during early stages of pregnancy. The PAG mRNAs isolated from fetal cotyledons (Pregnancy stages: 45, 75 and 90 days) were successfully cloned in pJET1.2 vector and transformed in E. coli. A total of 360 random clones were sequenced and correlated with their stages of expression. A total of 12 isoforms namely, BuPAG 1, 2, 4, 6, 7, 8, 9, 13, 15, 16, 18 and one new isoform were identified. BuPAG 7 was found as the most abundant isoform in all three stages followed by BuPAG 18. Further, a large number of variants were found for most of these isoforms. Phylogenetic relationship of identified BuPAGs showed that BuPAG 2 belonged to an ancient group while other members clustered with modern group. Three-dimensional (3D) structure of BuPAG 7 was determined by homology modeling and molecular dynamic (MD) simulations which displayed a typical fold represented by other aspartic proteinase (AP) family members. Molecular docking of Pepstatin inhibitor with BuPAG 7 revealed to interact through various hydrogen bonding and hydrophobic interactions. Various amino acid substitutions were observed in peptide-binding cleft of BuPAG 7. Superimposition of BuPAG 7 with homologous structures revealed the presence of a 35-41 amino acid long insertion (alpha helix connected by two loops) near the N- terminus which seems to be a unique feature of BuPAG 7 in AP family. This is the first report on identification and sequence characterization of PAG isoforms in buffalo with unique finding that these isoforms represent many transcript variants. We also report 3D structure of the most abundant isoform BuPAG 7 for the first time.


Assuntos
Ácido Aspártico Endopeptidases/química , Ácido Aspártico Endopeptidases/metabolismo , Búfalos/metabolismo , Sequência de Aminoácidos , Animais , Domínio Catalítico , Evolução Molecular , Feminino , Humanos , Modelos Moleculares , Pepstatinas/metabolismo , Filogenia , Gravidez , Ligação Proteica , Isoformas de Proteínas/química , Isoformas de Proteínas/metabolismo , Análise de Sequência de Proteína , Homologia Estrutural de Proteína , Sus scrofa
18.
Nat Prod Res ; 21(6): 522-8, 2007 May 20.
Artigo em Inglês | MEDLINE | ID: mdl-17497424

RESUMO

Two new iridoids 6-O-[2,3-dimethoxy]-trans-cinnamoyl catalpol (1) and 6-O-meta-methoxy-benzoyl catalpol (2) along with a known iridoid picroside 1 (3), two stilbenes quadrangularin A (4) and pallidol (5), quercitin (6), quercitrin (7), beta-sitosterol (8) and beta-sitosterol glycoside (9) were isolated from Cissus quadrangularis Linn. The compounds 3 and 7 are first reported from this plant. The structures were elucidated by analysis of their spectroscopic data and by direct comparison with literature. This is the first reported occurrence of iridoids in C. quadrangularis.


Assuntos
Cissus/química , Iridoides/química , Iridoides/isolamento & purificação , Estrutura Molecular , Caules de Planta/química
19.
J Proteomics ; 152: 121-130, 2017 01 30.
Artigo em Inglês | MEDLINE | ID: mdl-27989939

RESUMO

Lactobacillus fermentum strains NCDC 400 and RS2, previously isolated from dairy sources, exhibited excellent probiotic properties were studied for the global proteomic profile. A total of 1125 proteins were identified by a high-resolution mass spectrometer, ESI-qTOF (nano-LC-MS/MS) in the strains of L. fermentum. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis resulted in 60.9% and 59.2% of the total proteins were functionally annotated for NCDC 400 and RS2 respectively. Simultaneously, a cluster of orthologous groups (COGs) and KEGG together revealed the presence of a significant number of proteins involved in transcription, translation, chaperones, peptidoglycan biosynthesis, nucleotide, amino acid and carbohydrate metabolism. Most of the proteins that play a vital role in the formation of RNA polymerase, ribosomal subunits, and aminoacyl-tRNA biosynthesis were fully mapped. Further analysis by bioinformatics tools revealed that 13.83% of the proteins were hydrophobic while 86.17% were hydrophilic in nature. The present findings represent the first draft proteome map of L. fermentum strains and demonstrate the involvement of important proteins in normal physiology and growth of potential probiotic strain.


Assuntos
Limosilactobacillus fermentum/química , Probióticos/química , Proteoma/análise , Proteômica/métodos , Aminoaciltransferases , Proteínas de Bactérias/análise , Cromatografia Líquida , RNA Polimerases Dirigidas por DNA , Interações Hidrofóbicas e Hidrofílicas , Limosilactobacillus fermentum/crescimento & desenvolvimento , Subunidades Ribossômicas , Espectrometria de Massas em Tandem
20.
Indian J Ophthalmol ; 64(3): 235-7, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-27146938

RESUMO

We report the first case of intraocular gnathostomiasis from Central India. A 29-year-old male from Indore, Madhya Pradesh, presented with pain and redness of the right eye since 1 month. Slit lamp examination revealed anterior uveitis, multiple iris atrophic patches, and a live worm hooked on iris. The worm was removed through a small sclerocorneal tunnel. Microscopy confirmed Gnathostoma spinigerum. The patient was treated with oral albendazole and steroids. The case is reported because of its rarity.


Assuntos
Infecções Oculares Parasitárias/diagnóstico , Gnathostoma/isolamento & purificação , Gnatostomíase/diagnóstico , Iris/parasitologia , Adulto , Animais , Diagnóstico Diferencial , Infecções Oculares Parasitárias/parasitologia , Gnatostomíase/parasitologia , Humanos , Índia , Iris/diagnóstico por imagem , Masculino , Doenças Raras
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