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Polettini J, Dutta E, Behnia F, Saade G, Torloni M, Menon R. Aging of intrauterine tissues in spontaneous preterm birth and preterm premature rupture of the membranes: A systematic review of the literature. Placenta 2015; 36:969-73. [DOI: 10.1016/j.placenta.2015.05.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 04/13/2015] [Accepted: 05/01/2015] [Indexed: 10/23/2022]
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Badri P, Dutta S, Coakley E, Cohen D, Ding B, Podsadecki T, Bernstein B, Awni W, Menon R. Pharmacokinetics and dose recommendations for cyclosporine and tacrolimus when coadministered with ABT-450, ombitasvir, and dasabuvir. Am J Transplant 2015; 15:1313-22. [PMID: 25708713 PMCID: PMC5024008 DOI: 10.1111/ajt.13111] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Revised: 11/16/2014] [Accepted: 11/16/2014] [Indexed: 01/25/2023]
Abstract
ABT-450, ombitasvir, and dasabuvir are direct-acting antiviral agents (DAAs) that have been developed for combination treatment of chronic hepatitis C virus (HCV) infection. Because these DAAs have metabolic and transporter profiles that overlap with cyclosporine and tacrolimus disposition, there is potential for drug interactions. Two Phase 1 studies assessed effects of ABT-450 (150 mg coadministered with ritonavir 100 mg once daily), ombitasvir (25 mg once daily), and dasabuvir (400 mg twice daily) on the pharmacokinetics, safety, and tolerability of a single dose of cyclosporine (30 mg) or tacrolimus (2 mg) in healthy volunteers (N = 12 per study). In the presence of steady-state concentrations of all 3 DAAs, dose-normalized cyclosporine concentration at 24 hours (C₂₄), and area under the concentration-time curve from time 0 to infinity (AUC(∞)) were 15.8-fold and 5.8-fold, respectively, and dose-normalized tacrolimus C₂₄ and AUC(∞) were 17-fold and 57-fold, respectively, of either agent alone. Cyclosporine and tacrolimus half-lives increased from 7 to 25 h and 32 to 232 h, respectively. There were no major safety or tolerability issues in these studies. The results suggest that cyclosporine and tacrolimus doses and dosing frequency should be reduced in HCV-infected posttransplant patients being treated with this 3-DAA regimen.
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Menon R, Munjal N, Sturino JM. Characterization of amygdalin-degrading Lactobacillus species. J Appl Microbiol 2015; 118:443-53. [PMID: 25421573 DOI: 10.1111/jam.12704] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 10/31/2014] [Accepted: 11/13/2014] [Indexed: 12/31/2022]
Abstract
AIMS Cyanogenic glycosides are phytotoxic secondary metabolites produced by some crop plants. The aim of this study was to identify lactic acid bacteria (LAB) capable of catabolizing amygdalin, a model cyanogenic glycoside, for use in the biodetoxification of amygdalin-containing foods and feeds. METHODS AND RESULTS Amygdalin-catabolizing lactobacilli were characterized using a combination of cultivation-dependent and molecular assays. Lactobacillus paraplantarum and Lactobacillus plantarum grew robustly on amygdalin (Amg(+)), while other LAB species typically failed to catabolize amygdalin (Amg(-)). Interestingly, high concentrations of amygdalin and two of its metabolic derivatives (mandelonitrile and benzaldehyde) inhibited the growth of Lact. plantarum RENO 0093. The differential regulation of genes tentatively involved in cyanohydrin metabolism illustrated that the metabolism of amygdalin- and glucose-grown cultures also differed significantly. CONCLUSIONS Amygdalin fermentation was a relatively uncommon phenotype among the LAB and generally limited to strains from the Lact. plantarum group. Phenotype microarrays (PM) enabled strain-level discrimination between closely related strains within a species and suggested that phenotypic differences might affect niche specialization. SIGNIFICANCE AND IMPACT OF THE STUDY Amygdalin-degrading lactobacilli with practical application in the biodetoxification of amygdalin were characterized. These strains show potential for use as starter cultures to improve the safety of foods and feeds.
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Naik M, Raichurkar A, Bandodkar BS, Varun BV, Bhat S, Kalkhambkar R, Murugan K, Menon R, Bhat J, Paul B, Iyer H, Hussein S, Tucker JA, Vogtherr M, Embrey KJ, McMiken H, Prasad S, Gill A, Ugarkar BG, Venkatraman J, Read J, Panda M. Structure Guided Lead Generation for M. tuberculosis Thymidylate Kinase (Mtb TMK): Discovery of 3-Cyanopyridone and 1,6-Naphthyridin-2-one as Potent Inhibitors. J Med Chem 2014; 58:753-66. [DOI: 10.1021/jm5012947] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Nair CG, Jacob P, Menon R, Babu MJC. Graves' disease in a dialysis dependent chronic renal failure patient. Indian J Nephrol 2014; 24:397-9. [PMID: 25484538 PMCID: PMC4244724 DOI: 10.4103/0971-4065.136891] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Thyroid hormone level may be altered in chronic renal failure patients. Low levels of thyroxine protect the body from excess protein loss by minimizing catabolism. Hyperthyroidism is rarely encountered in end-stage dialysis dependent patients. Less than 10 well-documented cases of Graves' disease (GD) are reported in literature so far. We report a case of GD in a patient on dialysis.
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Menon R, Almazrooa S, Lambe J, Youseff W, Kabani S. Pseudoxanthoma elasticum: a rare entity presenting in the mouth. Oral Surg Oral Med Oral Pathol Oral Radiol 2014. [DOI: 10.1016/j.oooo.2014.05.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Vallabhajosyula P, Menon R, Gottret J, Komlo C, Atluri P, Acker M. 276 * DEEP HYPOTHERMIC CIRCULATORY ARREST FOR CONCOMITANT PROCEDURES IN PATIENTS UNDERGOING HEART TRANSPLANTATION. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Vallabhajosyula P, Robb JD, Menon R, Gottret J, Desai N, Szeto W, Pochettino A, Bavaria JE. 189 * MANAGING DISTAL ARCH TEARS IN DEBAKEY I AORTIC DISSECTION: CUT OR STENT? Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Offermann A, Shaikhibrahim Z, Braun M, Menon R, Ruiz C, Zellweger T, Rentsch C, Andren O, Bubendorf L, Perner S. 627: MED12 overexpression is a frequent event in castration-resistant prostate cancer. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)50550-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Nowak M, Menon R, Kunze F, Svensson M, Carlsson J, Wernert N, Kristiansen G, Andrén O, Perner S. 166: FoxF1 is a potential oncogene in prostate cancer. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)50139-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Luck J, Peabody JW, DeMaria LM, Alvarado CS, Menon R. Patient and provider perspectives on quality and health system effectiveness in a transition economy: evidence from Ukraine. Soc Sci Med 2014; 114:57-65. [PMID: 24911509 DOI: 10.1016/j.socscimed.2014.05.034] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 03/06/2014] [Accepted: 05/20/2014] [Indexed: 11/25/2022]
Abstract
Facing a severe population health crisis due to noncommunicable diseases, Ukraine and other former Soviet republics and Eastern European countries have a pressing need for more effective health systems. Policies to enhance health system effectiveness should consider the perspectives of different stakeholder groups, including providers as well as patients. In addition, policies that directly target the quality of clinical care should be based on objective performance measures. In 2009 and 2010 we conducted a coordinated series of household and facility-level surveys to capture the perspectives of Ukrainian household members, outpatient clinic patients, and physicians regarding the country's health system overall, as well as the quality, access, and affordability of health care. We objectively measured the quality of care for heart failure and chronic obstructive pulmonary disease using CPV(®) vignettes. There was broad agreement among household respondents (79%) and physicians (95%) that Ukraine's health system should be reformed. CPV(®) results indicate that the quality of care for common noncommunicable diseases is poor in all regions of the country and in hospitals as well as polyclinics. However, perspectives about the quality of care differ, with household respondents seeing quality as a serious concern, clinic patients having more positive perceptions, and physicians not viewing quality as a reform priority. All stakeholder groups viewed affordability as a problem. These findings have several implications for policies to enhance health system effectiveness. The shared desire for health system reform among all stakeholder groups provides a basis for action in Ukraine. Improving quality, strengthening primary care, and enhancing affordability should be major goals of new health policies. Policies to improve quality directly, such as pay-for-performance, would be mutually reinforcing with purchasing reforms such as transparent payment mechanisms. Such policies would align the incentives of physicians with the desires of the population they serve.
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Shepard M, Sukumar S, Wall A, Menon R, Hegarty A, Buchanan J, Jay A, Coleman H, Shah S, Kerr A, Hodgson T. OI0345 Oral squamous cell carcinoma and epithelial dysplasia in HIV-infected individuals. Oral Surg Oral Med Oral Pathol Oral Radiol 2014. [DOI: 10.1016/j.oooo.2014.01.218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Polettini J, Silva MG, Kacerovsky M, Syed TA, Saade G, Menon R. Expression profiles of fetal membrane nicotinamide adenine dinucleotide phosphate oxidases (NOX) 2 and 3 differentiates spontaneous preterm birth and pPROM pathophysiologies. Placenta 2014; 35:188-94. [PMID: 24439294 DOI: 10.1016/j.placenta.2013.12.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 11/27/2013] [Accepted: 12/23/2013] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Nicotinamide adenine dinucleotide phosphate oxidases (NOX 1-5) are enzymes that generate cellular reactive oxygen species (ROS) besides mitochondria and might be important ROS sources associated with pregnancy complications, particularly preterm premature rupture of membranes (pPROM), that has been related to ROS. OBJECTIVE To characterize NOX enzymes expression in human fetal membranes. METHODS Differential expression and localization of NOX isoforms in human fetal membranes collected from women with uncomplicated pregnancies at term, preterm birth (PTB) or pPROM and in vitro in normal term membranes maintained in an organ explant system stimulated with water-soluble cigarette smoke extract (wsCSE) were documented by real time PCR and immunohistochemistry. RESULTS Fetal membranes from term deliveries, PTB and pPROM expressed NOX 2, 3 and 4 mRNAs whereas NOX 1 and 5 were not detected. NOX 2 expression was 2.3-fold higher in PTB than pPROM (p = 0.005) whereas NOX 3 was 2.2-fold higher in pPROM compared to PTB (p = 0.04). NOX 2 and 3 expressions at term mimicked pPROM and PTB, respectively. No difference in NOX 4 expression was observed among the studied groups. NOX 2, 3 and 4 were localized to both amniotic and chorionic cells. Expression of NOX 2, 3 and 4 were not significant in wsCSE-stimulated membranes compared to untreated controls. DISCUSSION/CONCLUSIONS NOX enzymes are present in the fetal membranes and are differentially expressed in PTB and pPROM. Absence of any changes in NOXs expression after wsCSE stimulation suggests ROS generation in the membranes does not always correlate with NOX expression.
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Desai N, Menon R, Szeto W, Woo YJ, Moeller P, Moser W, Vallabhajosyula P, Bavaria JE. 200 * RETROGRADE AORTIC DISSECTION AFTER THORACIC ENDOVASCULAR AORTIC REPAIR: OPERATIVE MANAGEMENT TECHNIQUES AND PITFALLS. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Kizima L, Rodriguez A, Kenney J, Hsu M, Derby N, Mizenina O, Menon R, Zydowsky T, Robbiani M, Fernandez-Romero J. O10.6 A Potent Combination Microbicide Gel Inhibits SHIV-RT, HSV-2 and HPV Infections in Vivo. Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.0142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Menon R, Shields M, Duong T, Sturino JM. Development of a carbohydrate-supplemented semidefined medium for the semiselective cultivation of Lactobacillus spp. Lett Appl Microbiol 2013; 57:249-57. [PMID: 23691927 DOI: 10.1111/lam.12106] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Revised: 04/17/2013] [Accepted: 05/17/2013] [Indexed: 11/26/2022]
Abstract
The macronutrient and micronutrient compositions of traditional media used to cultivate Lactic Acid Bacteria (LAB) are largely undefined, which precludes their use in many metabolic bioassays. In order to address this deficiency, we developed MS: a carbohydrate-supplemented semidefined medium with low-background coloration. MS was designed to support the semiselective cultivation of a wide range of fastidious species belonging to the Lactobacillus clade of the LAB. When supplemented with 100 mM D-glucose, the MS medium stimulated the proliferation of 21 strains of LAB, including Pediococcus spp. and Lactobacillus spp. The MS medium supported biomass accumulation comparable with MRS, an undefined medium routinely used for the cultivation of lactobacilli. Interestingly, however, the novel MS medium exhibited greater semiselectivity against non-LAB than MRS. Together, these results suggest that MS is an acceptable alternative to MRS for use in metabolic and phenotypic bioassays that use a colorimetric reporter system or would benefit from a semidefined nutrient composition.
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Tambor V, Kacerovsky M, Lenco J, Bhat G, Menon R. Proteomics and bioinformatics analysis reveal underlying pathways of infection associated histologic chorioamnionitis in pPROM. Placenta 2013; 34:155-61. [DOI: 10.1016/j.placenta.2012.11.028] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Revised: 11/04/2012] [Accepted: 11/26/2012] [Indexed: 10/27/2022]
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Radhakrishnan K, Rathore C, Menon R. What is the standard approach to assessment of an unprovoked seizure in an adult?: INDIA. Neurol Clin Pract 2012; 2:297-298. [DOI: 10.1212/cpj.0b013e318279aba8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Yin L, Vijaygopal P, Menon R, Zhang A, Zhang M, Huang L, Chen C, Zhang L, Okunieff P, Vidyasagar S. A Potent Amino Acid Mixture to Mitigate Radiation-induced Gastrointestinal Toxicity. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Pennell C, Ang Q, Merialdi M, Katz M, Olsen J, Murray J, Olson D, Jacobsson B, Williams S, Menon R. O541 TWO NOVEL GENETIC VARIANTS ASSOCIATE WITH EARLY SPONTANEOUS PRETERM BIRTH IN CAUCASIAN POPULATIONS. Int J Gynaecol Obstet 2012. [DOI: 10.1016/s0020-7292(12)60971-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Nigro A, Menon R, Bergamaschi A, Clovis YM, Baldi A, Ehrmann M, Comi G, De Pietri Tonelli D, Farina C, Martino G, Muzio L. MiR-30e and miR-181d control radial glia cell proliferation via HtrA1 modulation. Cell Death Dis 2012; 3:e360. [PMID: 22854828 PMCID: PMC3434671 DOI: 10.1038/cddis.2012.98] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The precise mechanisms by which microRNAs (miRNAs) contribute to the dynamic regulation of gene expression during the forebrain development are still partly elusive. Here we show that the depletion of miRNAs in the cerebral cortex and hippocampus, via genetic inactivation of Dicer after the onset of forebrain neurogenesis, profoundly impairs the morphological and proliferative characteristics of neural stem and progenitor cells. The cytoarchitecture and self-renewal potential of radial glial (RG) cells located within the cerebral cortex and the hippocampus were profoundly altered, thus causing a significant derangement of both the post natal dorsal sub-ventricular zone and the dentate gyrus. This effect was attributed to the High-temperature requirement A serine peptidase 1 (HtrA1) gene product whose overexpression in the developing forebrain recapitulated some of the aspects of the Dicer−/− phenotype. MiR-30e and miR-181d were identified as posttranscriptional negative regulators of HtrA1 by binding to its 3′ untranslated region. In vivo overexpression of miR-30e and miR-181d in Dicer−/− forebrain rescued RG proliferation defects.
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Chai M, Barker G, Menon R, Lappas M. Increased oxidative stress in human fetal membranes overlying the cervix from term non-labouring and post labour deliveries. Placenta 2012; 33:604-10. [DOI: 10.1016/j.placenta.2012.04.014] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Revised: 04/25/2012] [Accepted: 04/27/2012] [Indexed: 10/28/2022]
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Göke F, Franzen A, Menon R, Kirsten R, Boehm D, Vogel W, Bootz F, Schroeck A, Perner S. 818 FGFR1 Amplification in Metastatic Squamous Cell Carcinoma of the Head and Neck – a Potential Target for a Rational Therapy? Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)71451-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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75
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Goke F, Franzen A, Menon R, Goltz D, Scheble V, Kirsten R, Vogel W, Boehm D, Schroeck A, Perner S. 814 Rationale for Treatment of Metastatic Squamous Cell Carcinoma of the Lung Using FGFR1 Inhibitors. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)71447-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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