1
|
Sahu BS, Razzoli M, McGonigle S, Pallais JP, Nguyen ME, Sadahiro M, Jiang C, Lin WJ, Kelley KA, Rodriguez P, Mansk R, Cero C, Caviola G, Palanza P, Rao L, Beetch M, Alejandro E, Sham YY, Frontini A, Salton SR, Bartolomucci A. Targeted and selective knockout of the TLQP-21 neuropeptide unmasks its unique role in energy homeostasis. Mol Metab 2023; 76:101781. [PMID: 37482186 PMCID: PMC10400922 DOI: 10.1016/j.molmet.2023.101781] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 06/26/2023] [Accepted: 07/18/2023] [Indexed: 07/25/2023] Open
Abstract
OBJECTIVE Pro-peptide precursors are processed into biologically active peptide hormones or neurotransmitters, each playing an essential role in physiology and disease. Genetic loss of function of a pro-peptide precursor results in the simultaneous ablation of all biologically-active peptides within that precursor, often leading to a composite phenotype that can be difficult to align with the loss of specific peptide components. Due to this biological constraint and technical limitations, mice carrying the selective ablation of individual peptides encoded by pro-peptide precursor genes, while leaving the other peptides unaffected, have remained largely unaddressed. METHODS We developed and characterized a mouse model carrying the selective knockout of the TLQP-21 neuropeptide (ΔTLQP-21) encoded by the Vgf gene. To achieve this goal, we used a knowledge-based approach by mutating a codon in the Vgf sequence leading to the substitution of the C-terminal Arginine of TLQP-21, which is the pharmacophore as well as an essential cleavage site from its precursor, into Alanine (R21→A). RESULTS We provide several independent validations of this mouse, including a novel in-gel digestion targeted mass spectrometry identification of the unnatural mutant sequence, exclusive to the mutant mouse. ΔTLQP-21 mice do not manifest gross behavioral and metabolic abnormalities and reproduce well, yet they have a unique metabolic phenotype characterized by an environmental temperature-dependent resistance to diet-induced obesity and activation of the brown adipose tissue. CONCLUSIONS The ΔTLQP-21 mouse line can be a valuable resource to conduct mechanistic studies on the necessary role of TLQP-21 in physiology and disease, while also serving as a platform to test the specificity of novel antibodies or immunoassays directed at TLQP-21. Our approach also has far-reaching implications by informing the development of knowledge-based genetic engineering approaches to generate selective loss of function of other peptides encoded by pro-hormones genes, leaving all other peptides within the pro-protein precursor intact and unmodified.
Collapse
Affiliation(s)
- Bhavani S Sahu
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Maria Razzoli
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Seth McGonigle
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Jean Pierre Pallais
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Megin E Nguyen
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Masato Sadahiro
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Cheng Jiang
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Wei-Jye Lin
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Kevin A Kelley
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Pedro Rodriguez
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Rachel Mansk
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Cheryl Cero
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Giada Caviola
- Department of Medicine and Surgery, University of Parma, 43120, Parma, Italy
| | - Paola Palanza
- Department of Medicine and Surgery, University of Parma, 43120, Parma, Italy
| | - Loredana Rao
- Department of Life and Environmental Sciences, Universita' Politecnica delle Marche, Ancona, 60131, Italy
| | - Megan Beetch
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Emilyn Alejandro
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Yuk Y Sham
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Andrea Frontini
- Department of Life and Environmental Sciences, Universita' Politecnica delle Marche, Ancona, 60131, Italy
| | - Stephen R Salton
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Alessandro Bartolomucci
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, 55455, USA.
| |
Collapse
|
2
|
Sahu BS, Razzoli M, McGonigle S, Pallais JP, Nguyen ME, Sadahiro M, Jiang C, Lin WJ, Kelley KA, Rodriguez P, Mansk R, Cero C, Caviola G, Palanza P, Rao L, Beetch M, Alejandro E, Sham YY, Frontini A, Salton SR, Bartolomucci A. Targeted and selective knockout of the TLQP-21 neuropeptide unmasks its unique role in energy homeostasis. bioRxiv 2023:2023.03.23.532619. [PMID: 36993202 PMCID: PMC10055429 DOI: 10.1101/2023.03.23.532619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Pro-peptide precursors are processed into biologically active peptide hormones or neurotransmitters, each playing an essential role in physiology and disease. Genetic loss of function of a pro-peptide precursor results in the simultaneous ablation of all biologically-active peptides within that precursor, often leading to a composite phenotype that can be difficult to align with the loss of specific peptide components. Due to this biological constraint and technical limitations, mice carrying the selective ablation of individual peptides encoded by pro-peptide precursor genes, while leaving the other peptides unaffected, have remained largely unaddressed. Here, we developed and characterized a mouse model carrying the selective knockout of the TLQP-21 neuropeptide (ΔTLQP-21) encoded by the Vgf gene. To achieve this goal, we used a knowledge-based approach by mutating a codon in the Vgf sequence leading to the substitution of the C-terminal Arginine of TLQP-21, which is the pharmacophore as well as an essential cleavage site from its precursor, into Alanine (R 21 →A). We provide several independent validations of this mouse, including a novel in-gel digestion targeted mass spectrometry identification of the unnatural mutant sequence, exclusive to the mutant mouse. ΔTLQP-21 mice do not manifest gross behavioral and metabolic abnormalities and reproduce well, yet they have a unique metabolic phenotype characterized by a temperature-dependent resistance to diet-induced obesity and activation of the brown adipose tissue.
Collapse
|
3
|
Ding X, Yang X, Hao Q, Xu F, Yu X, Rao L, Yuan C, Tian S. Risk prediction of second primary malignancies in primary colorectal neuroendocrine neoplasms patients: a population-based study. J Endocrinol Invest 2023:10.1007/s40618-023-02047-x. [PMID: 36870016 DOI: 10.1007/s40618-023-02047-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 02/19/2023] [Indexed: 03/05/2023]
Abstract
PURPOSE In this study, we aimed to identify risk factors for developing second primary malignancies (SPMs) in colorectal neuroendocrine neoplasms (NENs) patients and develop a competing-risk nomogram to predict SPMs' probabilities quantitatively. METHODS Patients with colorectal NENs were retrospectively collected from the Surveillance, Epidemiology, and End Results (SEER) database during 2000-2013. Potential risk factors for SPMs' occurrence in colorectal NENs' patients were identified by the Fine and Gray's proportional sub-distribution hazards model. Then, a competing-risk nomogram was constructed to quantify SPMs' probabilities. The discriminative abilities and calibrations of this competing-risk nomogram were assessed by the area under the receiver-operating characteristic (ROC) curves (AUC) and calibration curves. RESULTS We identified 11,017 colorectal NENs' patients, and randomly divided them into training (n = 7711 patients) and validation (n = 3306 patients) cohorts. In the whole cohort, 12.4% patients (n = 1369) had developed SPMs during the maximum follow-up of approximately 19 years (median 8.9 years). Sex, age, race, primary tumor location, and chemotherapy were identified as risk factors for SPMs' occurrence in colorectal NENs' patients. Such factors were selected to develop a competing-risk nomogram and showed excellent predictive ability for SPMs' occurrence (the 3-, 5-, and 10-year AUC values were 0.631, 0.632, and 0.629 in the training cohort and 0.665, 0.639, 0.624 in the validation cohort, respectively). CONCLUSIONS This research identified risk factors for SPMs' occurrence in colorectal NENs' patients. Competing-risk nomogram was constructed and proved to have good performance.
Collapse
Affiliation(s)
- X Ding
- Department of Clinical Laboratory, Affiliated Renhe Hospital of China Three Gorges University, Yichang, 443001, People's Republic of China
| | - X Yang
- Department of Clinical Laboratory, Affiliated Renhe Hospital of China Three Gorges University, Yichang, 443001, People's Republic of China
| | - Q Hao
- Department of Nursing, Affiliated Renhe Hospital of China Three Gorges University, Yichang, 443001, People's Republic of China
| | - F Xu
- Department of Pharmacy, The People's Hospital of China Three Gorges University, Yichang, 443000, People's Republic of China
| | - X Yu
- College of Basic Medical Science, China Three Gorges University, Yichang, 443002, People's Republic of China
| | - L Rao
- Department of Clinical Laboratory, Affiliated Renhe Hospital of China Three Gorges University, Yichang, 443001, People's Republic of China
| | - C Yuan
- College of Basic Medical Science, China Three Gorges University, Yichang, 443002, People's Republic of China.
| | - S Tian
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, People's Republic of China.
| |
Collapse
|
4
|
Rao L, Taylor WR, Horn N, List R, Preiss S, Schütz P. Can tibio-femoral kinematic and kinetic parameters reveal poor functionality and underlying deficits after total knee replacement? A systematic review. Knee 2022; 34:62-75. [PMID: 34883331 DOI: 10.1016/j.knee.2021.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 09/13/2021] [Accepted: 11/04/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND Extensive efforts have been made to understand joint kinematics and kinetics in total knee arthroplasty (TKA) in subjects with satisfactory outcomes during daily functional activities and clinical tests, but it remains unclear whether such movement characteristics hold the potential to indicate the underlying aetiology of unsatisfactory or bad TKA outcomes. PURPOSE To investigate which kinematic and kinetic parameters assessed during passive clinical tests and functional activities of daily living are associated with poor functionality and underlying deficits after total knee replacement. METHODS We focused on studies characterizing the kinematic or kinetic parameters of the knee joint that are associated with poor clinical outcome after TKA. Seventeen articles were included for the review, and kinematic and kinetic data from 719 patients with minimal follow up of 6 months were extracted and analyzed. RESULTS Passive posterior translation at 90°flexionexhibited good potential for differentiating stable and unstable TKAs. Anterior-posterior (A-P) translation of the medial condyle at 0-30° and 30-60° flexion, A-P translation of the lateral condyle at 60-90°during closed chain exercises, as well asknee extension moment during stair ascent and descent, knee abduction moment during stair descent, knee internal rotation moment and plantar flexion moment during walking, 2ndpeak ground reaction force during stair ascent and walkingshowed the greatest promise as functional biomarkers for a dissatisfied/poor outcome knee after TKA. CONCLUSION In this study, we systematically reviewed the state-of-the-art knowledge of kinematics and kinetics associated with functional deficits, and found 11 biomechanical parameters that showed promise for supportingdecision making in TKA.
Collapse
Affiliation(s)
- L Rao
- Institute for Biomechanics, ETH Zurich, Zürich, Switzerland
| | - W R Taylor
- Institute for Biomechanics, ETH Zurich, Zürich, Switzerland.
| | - N Horn
- Schulthess Clinic, Zürich, Switzerland
| | - R List
- Schulthess Clinic, Zürich, Switzerland
| | - S Preiss
- Schulthess Clinic, Zürich, Switzerland
| | - P Schütz
- Institute for Biomechanics, ETH Zurich, Zürich, Switzerland
| |
Collapse
|
5
|
Xie L, Qin J, Rao L, Tang X, Cui D, Chen L, Xu W, Xiao S, Zhang Z, Huang L. Accurate prediction and genome-wide association analysis of digital intramuscular fat content in longissimus muscle of pigs. Anim Genet 2021; 52:633-644. [PMID: 34291482 DOI: 10.1111/age.13121] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2021] [Indexed: 11/30/2022]
Abstract
Intramuscular fat (IMF) content is a critical indicator of pork quality that affects directly the purchasing desire of consumers. However, to measure IMF content is both laborious and costly, preventing our understanding of its genetic determinants and improvement. In the present study, we constructed an accurate and fast image acquisition and analysis system, to extract and calculate the digital IMF content, the proportion of fat areas in the image (PFAI) of the longissimus muscle of 1709 animals from multiple pig populations. PFAI was highly significantly correlated with marbling scores (MS; 0.95, r2 = 0.90), and also with IMF contents chemically defined for 80 samples (0.79, r2 = 0.63; more accurate than direct analysis between IMF contents and MS). The processing time for one image is only 2.31 s. Genome-wide association analysis on PFAI for all 1709 animals identified 14 suggestive significant SNPs and 1 genome-wide significant SNP. On MS, we identified nine suggestive significant SNPs, and seven of them were also identified in PFAI. Furthermore, the significance (-log P) values of the seven common SNPs are higher in PFAI than in MS. Novel candidate genes of biological importance for IMF content were also discovered. Our imaging systems developed for prediction of digital IMF content is closer to IMF measured by Soxhlet extraction and slightly more accurate than MS. It can achieve fast and high-throughput IMF phenotype, which can be used in improvement of pork quality.
Collapse
Affiliation(s)
- L Xie
- National Key Laboratory for Swine Genetic Improvement and Production Technology, Ministry of Science and Technology of China, Jiangxi Agricultural University, Nanchang, Jiangxi Province, 330045, China
| | - J Qin
- National Key Laboratory for Swine Genetic Improvement and Production Technology, Ministry of Science and Technology of China, Jiangxi Agricultural University, Nanchang, Jiangxi Province, 330045, China
| | - L Rao
- National Key Laboratory for Swine Genetic Improvement and Production Technology, Ministry of Science and Technology of China, Jiangxi Agricultural University, Nanchang, Jiangxi Province, 330045, China
| | - X Tang
- National Key Laboratory for Swine Genetic Improvement and Production Technology, Ministry of Science and Technology of China, Jiangxi Agricultural University, Nanchang, Jiangxi Province, 330045, China
| | - D Cui
- National Key Laboratory for Swine Genetic Improvement and Production Technology, Ministry of Science and Technology of China, Jiangxi Agricultural University, Nanchang, Jiangxi Province, 330045, China
| | - L Chen
- National Key Laboratory for Swine Genetic Improvement and Production Technology, Ministry of Science and Technology of China, Jiangxi Agricultural University, Nanchang, Jiangxi Province, 330045, China
| | - W Xu
- National Key Laboratory for Swine Genetic Improvement and Production Technology, Ministry of Science and Technology of China, Jiangxi Agricultural University, Nanchang, Jiangxi Province, 330045, China
| | - S Xiao
- National Key Laboratory for Swine Genetic Improvement and Production Technology, Ministry of Science and Technology of China, Jiangxi Agricultural University, Nanchang, Jiangxi Province, 330045, China
| | - Z Zhang
- National Key Laboratory for Swine Genetic Improvement and Production Technology, Ministry of Science and Technology of China, Jiangxi Agricultural University, Nanchang, Jiangxi Province, 330045, China
| | - L Huang
- National Key Laboratory for Swine Genetic Improvement and Production Technology, Ministry of Science and Technology of China, Jiangxi Agricultural University, Nanchang, Jiangxi Province, 330045, China
| |
Collapse
|
6
|
Rao L, Comfort A, Goodman S, Stern L, Shah N, Fuentes L, Brandi K, Robinson J, Gatimu J, Blum M, Harper C. P53 Contraceptive metrics for LARC removal: Findings from a contraceptive intervention. Contraception 2020. [DOI: 10.1016/j.contraception.2020.07.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
7
|
Rocca C, Rao L, Muñoz I, Lee H, Kerns J, Harper C. P46 Agency in contraceptive decision-making: A newly developed psychometric measure. Contraception 2020. [DOI: 10.1016/j.contraception.2020.07.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
8
|
Ma S, Rao L, Freedberg IM, Blumenberg M. Transcriptional control of K5, K6, K14, and K17 keratin genes by AP-1 and NF-kappaB family members. Gene Expr 2018; 6:361-70. [PMID: 9495317 PMCID: PMC6148254] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The expression of keratins K5 and K14 is restricted to the basal layers of the healthy epidermis, whereas the expression of K6 and K17 is induced in response to proliferative and inflammatory signals, respectively. The control of keratin expression occurs primarily at the transcriptional level. We studied the effects of transcription factors of the AP-1 and NF-kappaB families on the expression of those four keratin genes. We chose AP-1 and NF-kappaB proteins because they are activated by many extracellular signals, including those in hyperproliferative and inflammatory processes. DNA constructs expressing the transcription factors were, in various combinations, cotransfected with constructs containing keratin gene promoters and the CAT reporter gene into HeLa cells or keratinocytes. We found that the K5 and K14 promoters, which are coexpressed in vivo, are regulated in parallel by the cotransfected genes. Both were activated by the c-Fos and c-Jun components of AP-1, but not by Fra1. On the other hand, the NF-kappaB proteins, especially p65, suppressed these two promoters. The K17 promoter was specifically activated by c-Jun, whereas the other transcription factors tested had no significant effect. In contrast, the K6 promoter was very strongly activated by all AP-1 proteins, especially by the c-Fos + c-Jun and Fra1 + c-Jun combinations. It was also strongly activated by the p65 NF-kappaB protein. AP-1 and NF-kappaB acted synergistically in activating the K6 promoter, although the AP-1 and the NF-kappaB responsive sites could be separated physically. These results suggest that the interplay of AP-1 and NF-kappaB proteins regulates epidermal gene expression and that the activation of these transcription factors by extracellular signaling molecules brings about the differential expression of keratin genes in epidermal differentiation, cutaneous diseases, and wound healing.
Collapse
Affiliation(s)
- S Ma
- The Ronald O. Perelman Department of Dermatology, New York University Medical Center, NY 10016, USA
| | | | | | | |
Collapse
|
9
|
Yang H, Rao L, Cui J, Yuan G. Effect of patient support on psychological and activity of daily living in patients with early spinal cord injury. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.1232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
10
|
Parker BF, Hohloch S, Pankhurst JR, Zhang Z, Love JB, Arnold J, Rao L. Interactions of vanadium(iv) with amidoxime ligands: redox reactivity. Dalton Trans 2018; 47:5695-5702. [PMID: 29632905 DOI: 10.1039/c7dt04069e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The use of amidoxime-functionalized polymer fibers as a sorbent for uranium has attracted recent interest for the extraction of uranium from seawater. Vanadium is one of the main competing ions for uranium sorption as V(v) species, however, vanadium is also present as V(iv) in seawater. In the present study, the interactions of V(iv) with amidoxime and similar ligands were explored. Attempts were made to synthesize V(iv) complexes of glutaroimide-dioxime, a molecular analogue of polymer sorbents. However, V(iv) was found to react irreversibly with glutaroimide-dioxime and other oxime groups, oxidizing to the V(v) oxidation state. We have explored the reactions and propose mechanisms, as well as characterized the redox behavior of the vanadium-glutaroimide-dioxime complex.
Collapse
Affiliation(s)
- B F Parker
- Department of Chemistry, University of California - Berkeley, Berkeley, CA 94720, USA.
| | | | | | | | | | | | | |
Collapse
|
11
|
Abstract
This review provides a brief background on the extraction of uranium from seawater as well as recent work by the United States Department of Energy on this project. The world's oceans contain uranium at 3 parts per billion, and despite this low concentration, there has been historical interest in harvesting it, mainly in Japan in the 1980s and the United States in this decade. Improvements in materials, chemistry, and deployment methods have all been made, with the ultimate goal of lower cost. This has been partially realized, dropping from approximately $2000 per kg U3O8 extracted in 1984 to $500 per kg today, although this is not yet competitive with terrestrial uranium. This technology may become cost-competitive if the cost of land-based uranium rises, especially if seawater extraction technology is improved further. The coordination chemistry aspects of the project are described in more detail, exploring the functional groups that are present on typical polymer sorbents as well as small-molecule analogues of these ligands. Selectivity for uranium over other metals, particularly vanadium, remains problematic, and techniques to both quantify binding strength and selectivity in order to overcome this issue are essential for future cost improvements.
Collapse
Affiliation(s)
- B F Parker
- Department of Chemistry, University of California - Berkeley, Berkeley, CA 94720, USA.
| | | | | | | |
Collapse
|
12
|
Meshram H, Kumar N, Kumar R, Rao L, Muthineni N, Ramesh T, Babu N. Acid-Catalyzed Protocol for the Synthesis of Novel 6-Substituted Tetrahydroquinolines by Highly Regioselective C6-Functionalization of Tetrahydroquinolines with Chromene Hemiacetals or β-Nitrostyrenes. SYNTHESIS-STUTTGART 2017. [DOI: 10.1055/s-0036-1588995] [Citation(s) in RCA: 5] [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: 10/19/2022]
Abstract
A simple and novel method has been developed for the C6-functionalization of unprotected tetrahydroquinoline with chromenes or β-nitrostyrenes in aqueous medium to afford novel 6-substituted tetrahydroquinolines. This method is simple and convenient, and has low costs and mild reaction conditions. Regioselectively C6-alkylated products were obtained exclusively from tetrahydroquinoline, without the formation of C5-, C7-, C8-, or N-alkylated products.
Collapse
Affiliation(s)
- Harshadas Meshram
- CSIR-Indian Institute of Chemical Technology, Medicinal Chemistry and Pharmacology Division
| | - Nandigama Kumar
- CSIR-Indian Institute of Chemical Technology, Medicinal Chemistry and Pharmacology Division
| | - Rayala Kumar
- CSIR-Indian Institute of Chemical Technology, Medicinal Chemistry and Pharmacology Division
| | - L. Rao
- CSIR-Indian Institute of Chemical Technology, Medicinal Chemistry and Pharmacology Division
| | - Narmada Muthineni
- CSIR-Indian Institute of Chemical Technology, Medicinal Chemistry and Pharmacology Division
| | - Tungana Ramesh
- CSIR-Indian Institute of Chemical Technology, Medicinal Chemistry and Pharmacology Division
| | - Nanubolu Babu
- Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology
| |
Collapse
|
13
|
Xie X, Shi X, Xun X, Rao L. Association between microRNA polymorphisms and coronary heart disease : A meta-analysis. Herz 2016; 42:593-603. [PMID: 27832287 DOI: 10.1007/s00059-016-4495-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 09/14/2016] [Accepted: 10/08/2016] [Indexed: 02/05/2023]
Abstract
The association between microRNA polymorphisms (miR polymorphisms) and coronary heart disease (CHD) risk has been studied intensively, but the results have been conflicting. Therefore, we conducted the present meta-analysis to obtain a more conclusive answer. We searched for eligible articles in PubMed, MEDLINE, EMBASE, Scopus, and CNKI. Odds ratios (ORs) and 95% confidence intervals (CIs) were used to identify any potential associations. Ten case-control studies including 5,292 CHD patients and 5,446 control subjects were analyzed. The overall meta-analysis results showed that the miR-146a rs2910164 polymorphism, the miR-196a2 rs11614913 polymorphism, and the miR-499 rs3746444 polymorphism were all significantly associated with CHD risk in certain genetic models. Besides, the C allele of the miR-146a rs2910164 and miR-499 rs3746444 polymorphisms conferred increased susceptibility to CHD (C versus G, p < 0.0001, OR = 1.14, 95% CI = 1.07-1.21; p = 0.003, OR = 1.14, 95% CI = 1.05-1.25). Overall, our findings suggest that the miR-146a rs2910164, miR-196a2 rs11614913, and miR-499 rs3746444 polymorphisms may be correlated with the risk of CHD.
Collapse
Affiliation(s)
- X Xie
- Department of Cardiology, West China Hospital, Sichuan University, 610041, Chengdu, Sichuan, China
| | - X Shi
- Division of Reproductive Medical Center, West China Second University Hospital, Sichuan University, 610041, Chengdu, Sichuan, China
| | - X Xun
- West China School of Public Health, Sichuan University, 610041, Chengdu, Sichuan, China
| | - L Rao
- Department of Cardiology, West China Hospital, Sichuan University, 610041, Chengdu, Sichuan, China.
| |
Collapse
|
14
|
Abstract
Hydrolysis of Th(iv) was studied in tetraethylammonium perchlorate (0.10 mol kg(-1)) at variable temperatures (283-358 K) by potentiometry and microcalorimetry. Three hydrolysis reactions, mTh(4+) + nH2O = Thm(OH)n((4m-n)+) + nH(+), in which (n,m) = (2,2), (8,4), and (15,6), were invoked to describe the potentiometric and calorimetric data for solutions with the [hydroxide]/[Th(iv)] ratio ≤ 2. At higher ratios, the formation of (16,5) cannot be excluded. The hydrolysis constants, *β2,2, *β8,4, and *β15,6, increased by 3, 7, and 11 orders of magnitude, respectively, as the temperature was increased from 283 to 358 K. The enhancement is mainly due to the significant increase of the degree of ionization of water as the temperature rises. All three hydrolysis reactions are endothermic at 298 K, with enthalpies of (118 ± 4) kJ mol(-1), (236 ± 7) kJ mol(-1), and (554 ± 4) kJ mol(-1) for ΔH2,2, ΔH8,4, and ΔH15,6 respectively. The hydrolysis constants at infinite dilution have been obtained with the specific ion interaction approach. The applicability of three approaches for estimating the equilibrium constants at different temperatures, including the constant enthalpy approach, the constant heat capacity approach and the DQUANT equation was evaluated with the data from this work.
Collapse
Affiliation(s)
- P L Zanonato
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy.
| | - P Di Bernardo
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy.
| | - Z Zhang
- Glenn T. Seaborg Center, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
| | - Y Gong
- Glenn T. Seaborg Center, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
| | - G Tian
- Glenn T. Seaborg Center, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
| | - J K Gibson
- Glenn T. Seaborg Center, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
| | - L Rao
- Glenn T. Seaborg Center, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
| |
Collapse
|
15
|
Rao L, Liao X, Setlow P. Bacillus spore wet heat resistance and evidence for the role of an expanded osmoregulatory spore cortex. Lett Appl Microbiol 2016; 63:247-53. [PMID: 27424522 DOI: 10.1111/lam.12615] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 04/26/2016] [Revised: 07/11/2016] [Accepted: 07/12/2016] [Indexed: 11/28/2022]
Abstract
UNLABELLED Previous work reported that decoated Bacillus cereus spores incubated in 4 mol l(-1) CaCl2 are killed at lower temperatures than spores in water. This wet heat sensitization was suggested to support a role for an osmoregulatory peptidoglycan cortex in spore cores' low water content, and their wet heat resistance. Current work has replicated this finding with spores of B. cereus, Bacillus megaterium and Bacillus subtilis. However, this work found that decoated spores apparently killed at 80°C in 4 mol l(-1) CaCl2 : (i) were recovered on plates containing lysozyme; (ii) lost no dipicolinic acid (DPA) and their inner membrane remained impermeable; (iii) released no DPA upon stimulation with nutrient germinants and could not complete germination; and (iv) released DPA relatively normally upon stimulation with dodecylamine. These results indicate that decoated spores treated with 80°C- 4 mol l(-1) CaCl2 are not dead, but some protein(s) essential for spore germination, most likely germinant receptors, are inactivated by this treatment. Thus, the original finding does not support a role for an osmoregulatory cortex in spore wet heat resistance. SIGNIFICANCE AND IMPACT OF THE STUDY Bacillus spores' low core water content is a major factor in their wet heat resistance. One suggested mechanism for achieving low spore core water content is osmoregulated expansion of spores' peptidoglycan cortex. Evidence for this mechanism includes a report that decoated Bacillus cereus spores incubated in 4 mol l(-1) CaCl2 exhibit drastically reduced heat resistance. The current work shows that this heat sensitization of decoated spores of three Bacillus species is most likely due to inactivation of some crucial spore germination protein(s), since while treated spores appear dead, their apparent low viability is rescued by triggering spore germination with lysozyme.
Collapse
Affiliation(s)
- L Rao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,National Engineering Research Center for Fruit and Vegetable Processing, Key Lab of Fruit and Vegetable Processing, Ministry of Agriculture, Beijing, China.,Department of Molecular Biology and Biophysics, UConn Health, Farmington, CT, USA
| | - X Liao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,National Engineering Research Center for Fruit and Vegetable Processing, Key Lab of Fruit and Vegetable Processing, Ministry of Agriculture, Beijing, China
| | - P Setlow
- Department of Molecular Biology and Biophysics, UConn Health, Farmington, CT, USA.
| |
Collapse
|
16
|
Raghunadh A, Murthy V, Nikumbh S, Kumar S, Chiranjeevi Y, Rao L. A Simple Approach for the Synthesis of Fused Quinazoline-Based Tetracyclic Compounds via a Multicomponent Reaction Strategy. Synlett 2016. [DOI: 10.1055/s-0035-1562465] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Akula Raghunadh
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd
| | - V. Murthy
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd
| | - Satish Nikumbh
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd
| | - S. Kumar
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd
| | - Y. Chiranjeevi
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd
| | - L. Rao
- Department of Chemistry, GIS, GITAM University
| |
Collapse
|
17
|
Affiliation(s)
- N Gangwar
- Department of ENT, Kasturba Medical College, Manipal University, Karnataka, India
| | | | | | | | | |
Collapse
|
18
|
Cescon DW, Ennis M, Pritchard KI, Townsley C, Warr D, Elser C, Rao L, Stambolic V, Sridhar S, Goodwin PJ. Abstract P5-12-02: Effect of 5 vs 2.5 mg/day letrozole on residual estrogen levels in post-menopausal women with high BMI - A prospective crossover study. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p5-12-02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Some studies have suggested that women with high BMI have less benefit from aromatase inhibitors (AI) vs. tamoxifen as adjuvant treatment for early breast cancer. One possible mechanism for this observation is that complete suppression of estrogen is not achieved in these women with the standard flat dose of AI. We evaluated whether a doubling of letrozole to 5 mg/day for 4 weeks affected residual estrogen levels in this population.
Methods: Post-menopausal women with early breast cancer and BMI>25 already taking adjuvant letrozole for at least 3 months were recruited from medical oncology clinics at 4 sites in Toronto, Canada. Fasting blood samples were collected 24 hours following the last dose at baseline (routine use of own letrozole), after 28 days of monitored adherence to a provided supply of letrozole (Femara) 2.5 mg/day (Part A), and after an additional 28 days of letrozole (Femara) 5 mg/day (Part B). Symptom/quality of life questionnaires were completed at the same timepoints. Estradiol and estrone were measured using a high sensitivity liquid chromatography-tandem mass spectrometry assay. One interim analysis for futility and efficacy was planned after 31 eligible patients had completed the study, using estradiol and O'Brien-Fleming boundaries with an inner wedge.
Results: 36 patients were enrolled and started on study, and 31 eligible patients completed Parts A and B. The 5 non-completers withdrew because of adverse events (n=4, unlikely related to drug) or withdrawal of consent (n=1). Median age was 62 (range 48 to 77) and BMI 28.3 kg/m2 (Range 25.2 to 42.2 kg/m2). One patient had non-postmenopausal estrogen levels at Day 29 and Day 57 and one patient's blood assay was unsuccessful; both were excluded from further analyses. The predetermined stopping rule for futility was met. Estradiol levels (mean±standard deviation) changed from 2.68±0.40 pg/mL at baseline to 2.67±0.59 pg/mL at Day 29 to 2.70±0.53 pg/mL at Day 57. Mean change from Day 29 to Day 57 was 0.03±0.48 pg/mL (95% confidence interval -0.15 to 0.21 pg/mL). Four patients reported new or increased arthralgias (to NCI CTCAE Grade 2 or 3) while taking letrozole 5 mg/day in Part B. There was no association between changes in estradiol levels and either study non-completion or the development of arthralgias. Estrone results were similar.
Conclusion: Increasing letrozole from 2.5 to 5 mg/day did not further suppress estrogen levels in women with BMI>25. It is unlikely that letrozole dosing tailored to body size would improve clinical outcomes. The letrozole 5 mg/day intervention was terminated based on the results of the interim analysis for futility.
Citation Format: Cescon DW, Ennis M, Pritchard KI, Townsley C, Warr D, Elser C, Rao L, Stambolic V, Sridhar S, Goodwin PJ. Effect of 5 vs 2.5 mg/day letrozole on residual estrogen levels in post-menopausal women with high BMI - A prospective crossover study. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P5-12-02.
Collapse
Affiliation(s)
- DW Cescon
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Applied Statistician, Markham, ON, Canada; Sunnybrook Odette Cancer Centre, Toronto, ON, Canada; Women's College Hospital, Toronto, ON, Canada; Marvelle Koffler Breast Centre, Mount Sinai Hospital, Toronto, ON, Canada; Lunenfeld Tanenbaum Research Institute, Mt. Sinai Hospital, Toronto, ON, Canada; University of Toronto, Toronto, ON, Canada
| | - M Ennis
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Applied Statistician, Markham, ON, Canada; Sunnybrook Odette Cancer Centre, Toronto, ON, Canada; Women's College Hospital, Toronto, ON, Canada; Marvelle Koffler Breast Centre, Mount Sinai Hospital, Toronto, ON, Canada; Lunenfeld Tanenbaum Research Institute, Mt. Sinai Hospital, Toronto, ON, Canada; University of Toronto, Toronto, ON, Canada
| | - KI Pritchard
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Applied Statistician, Markham, ON, Canada; Sunnybrook Odette Cancer Centre, Toronto, ON, Canada; Women's College Hospital, Toronto, ON, Canada; Marvelle Koffler Breast Centre, Mount Sinai Hospital, Toronto, ON, Canada; Lunenfeld Tanenbaum Research Institute, Mt. Sinai Hospital, Toronto, ON, Canada; University of Toronto, Toronto, ON, Canada
| | - C Townsley
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Applied Statistician, Markham, ON, Canada; Sunnybrook Odette Cancer Centre, Toronto, ON, Canada; Women's College Hospital, Toronto, ON, Canada; Marvelle Koffler Breast Centre, Mount Sinai Hospital, Toronto, ON, Canada; Lunenfeld Tanenbaum Research Institute, Mt. Sinai Hospital, Toronto, ON, Canada; University of Toronto, Toronto, ON, Canada
| | - D Warr
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Applied Statistician, Markham, ON, Canada; Sunnybrook Odette Cancer Centre, Toronto, ON, Canada; Women's College Hospital, Toronto, ON, Canada; Marvelle Koffler Breast Centre, Mount Sinai Hospital, Toronto, ON, Canada; Lunenfeld Tanenbaum Research Institute, Mt. Sinai Hospital, Toronto, ON, Canada; University of Toronto, Toronto, ON, Canada
| | - C Elser
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Applied Statistician, Markham, ON, Canada; Sunnybrook Odette Cancer Centre, Toronto, ON, Canada; Women's College Hospital, Toronto, ON, Canada; Marvelle Koffler Breast Centre, Mount Sinai Hospital, Toronto, ON, Canada; Lunenfeld Tanenbaum Research Institute, Mt. Sinai Hospital, Toronto, ON, Canada; University of Toronto, Toronto, ON, Canada
| | - L Rao
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Applied Statistician, Markham, ON, Canada; Sunnybrook Odette Cancer Centre, Toronto, ON, Canada; Women's College Hospital, Toronto, ON, Canada; Marvelle Koffler Breast Centre, Mount Sinai Hospital, Toronto, ON, Canada; Lunenfeld Tanenbaum Research Institute, Mt. Sinai Hospital, Toronto, ON, Canada; University of Toronto, Toronto, ON, Canada
| | - V Stambolic
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Applied Statistician, Markham, ON, Canada; Sunnybrook Odette Cancer Centre, Toronto, ON, Canada; Women's College Hospital, Toronto, ON, Canada; Marvelle Koffler Breast Centre, Mount Sinai Hospital, Toronto, ON, Canada; Lunenfeld Tanenbaum Research Institute, Mt. Sinai Hospital, Toronto, ON, Canada; University of Toronto, Toronto, ON, Canada
| | - S Sridhar
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Applied Statistician, Markham, ON, Canada; Sunnybrook Odette Cancer Centre, Toronto, ON, Canada; Women's College Hospital, Toronto, ON, Canada; Marvelle Koffler Breast Centre, Mount Sinai Hospital, Toronto, ON, Canada; Lunenfeld Tanenbaum Research Institute, Mt. Sinai Hospital, Toronto, ON, Canada; University of Toronto, Toronto, ON, Canada
| | - PJ Goodwin
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Applied Statistician, Markham, ON, Canada; Sunnybrook Odette Cancer Centre, Toronto, ON, Canada; Women's College Hospital, Toronto, ON, Canada; Marvelle Koffler Breast Centre, Mount Sinai Hospital, Toronto, ON, Canada; Lunenfeld Tanenbaum Research Institute, Mt. Sinai Hospital, Toronto, ON, Canada; University of Toronto, Toronto, ON, Canada
| |
Collapse
|
19
|
Leggett CJ, Parker BF, Teat SJ, Zhang Z, Dau PD, Lukens WW, Peterson SM, Cardenas AJP, Warner MG, Gibson JK, Arnold J, Rao L. Structural and spectroscopic studies of a rare non-oxido V(v) complex crystallized from aqueous solution. Chem Sci 2016; 7:2775-2786. [PMID: 28660055 PMCID: PMC5477013 DOI: 10.1039/c5sc03958d] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 01/14/2016] [Indexed: 11/21/2022] Open
Abstract
A non-oxido V(v) complex with glutaroimide-dioxime (H3L), a ligand for recovering uranium from seawater, was synthesized from aqueous solution as Na[V(L)2]·2H2O, and the structure determined by X-ray diffraction.
A non-oxido V(v) complex with glutaroimide-dioxime (H3L), a ligand for recovering uranium from seawater, was synthesized from aqueous solution as Na[V(L)2]·2H2O, and the structure determined by X-ray diffraction. It is the first non-oxido V(v) complex that has been directly synthesized in and crystallized from aqueous solution. The distorted octahedral structure contains two fully deprotonated ligands (L3–) coordinating to V5+, each in a tridentate mode via the imide N (RV–N = 1.96 Å) and oxime O atoms (RV–O = 1.87–1.90 Å). Using 17O-labelled vanadate as the starting material, concurrent 17O/51V/1H/13C NMR, in conjunction with ESI-MS, unprecedentedly demonstrated the stepwise displacement of the oxido V
Created by potrace 1.16, written by Peter Selinger 2001-2019
]]>
O bonds by glutaroimide-dioxime and verified the existence of the “bare” V5+/glutaroimide-dioxime complex, [V(L)2]–, in aqueous solution. In addition, the crystal structure of an intermediate 1 : 1 V(v)/glutaroimide-dioxime complex, [VO2(HL)]–, in which the oxido bonds of vanadate are only partially displaced, corroborates the observations by NMR and ESI-MS. Results from this work provide important insights into the strong sorption of vanadium on poly(amidoxime) sorbents in the recovery of uranium from seawater. Also, because vanadium plays important roles in biological systems, the syntheses of the oxido and non-oxido V5+ complexes and the unprecedented demonstration of the displacement of the oxido V
Created by potrace 1.16, written by Peter Selinger 2001-2019
]]>
O bonds help with the on-going efforts to develop new vanadium compounds that could be of importance in biological applications.
Collapse
Affiliation(s)
- C J Leggett
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , CA 94720 , USA .
| | - B F Parker
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , CA 94720 , USA . .,Department of Chemistry , University of California - Berkeley , Berkeley , CA 94720 , USA
| | - S J Teat
- Advanced Light Source , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , CA 94720 , USA .
| | - Z Zhang
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , CA 94720 , USA .
| | - P D Dau
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , CA 94720 , USA .
| | - W W Lukens
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , CA 94720 , USA .
| | - S M Peterson
- National Security Directorate , Pacific Northwest National Laboratory , 902 Battelle Blvd. , Richland , WA 99352 , USA
| | - A J P Cardenas
- Fundamental and Computational Sciences Directorate , Pacific Northwest National Laboratory , 902 Battelle Blvd. , Richland , WA 99352 , USA
| | - M G Warner
- National Security Directorate , Pacific Northwest National Laboratory , 902 Battelle Blvd. , Richland , WA 99352 , USA
| | - J K Gibson
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , CA 94720 , USA .
| | - J Arnold
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , CA 94720 , USA . .,Department of Chemistry , University of California - Berkeley , Berkeley , CA 94720 , USA
| | - L Rao
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , CA 94720 , USA .
| |
Collapse
|
20
|
Meshram H, Kumar N, Rao L, JagadeeshBabu N, Dileep Kumar V, Murthy U. A Catalyst-Free, One-Pot, Three-Component Approach for the Synthesis of 2-[1-Aryl-2-(azaaryl)ethyl]malononitriles via sp3 C–H Activation of 2-Methyl Azaarenes. Synlett 2015. [DOI: 10.1055/s-0034-1380212] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- H. Meshram
- Medicinal Chemistry and pharmacology Division, CSIR-Indian Institute of Chemical Technology
| | - Nandigama Kumar
- Medicinal Chemistry and pharmacology Division, CSIR-Indian Institute of Chemical Technology
| | - L. Rao
- Medicinal Chemistry and pharmacology Division, CSIR-Indian Institute of Chemical Technology
| | - N. JagadeeshBabu
- Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology
| | - V. Dileep Kumar
- Biology Division, CSIR-Indian Institute of Chemical Technology
| | - U. Murthy
- Biology Division, CSIR-Indian Institute of Chemical Technology
| |
Collapse
|
21
|
Yang M, Ma Y, Ding J, Rao L, Li J. Preconditioning donor livers with cromolyn or compound 48/80 prolongs recipient survival in a rat orthotopic liver transplantation model. Transplant Proc 2015; 46:1554-9. [PMID: 24935329 DOI: 10.1016/j.transproceed.2014.01.017] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 10/17/2013] [Accepted: 01/15/2014] [Indexed: 01/10/2023]
Abstract
BACKGROUND Acute rejection (AR) remains a challenge in organ transplantation. Preconditioning donor organs can reduce AR and prolong survival. Whether preconditioning with cromolyn (CRM), a mast cell (MC) stabilizer, or compound 48/80 (CMP 48/80), a MC degranulator, can alleviate AR and prolong survival has not been studied. METHODS We used the male-DA-to-female-Lewis-rat orthotopic liver transplantation (OLT) model. Donors were preconditioned with CRM in a MC stabilizing way (CRM group) or CMP 48/80 in a MC depleting way (CMP 48/80 group). Rats preconditioned with phosphate-buffered saline were used as controls (PBS group). After preconditioning, OLT surgeries were carried out. OLT male-Lewis-to-female-Lewis-rats were used as the syngeneic group (syngeneic group). RESULTS Rats in the PBS group developed AR rapidly and died at 7.40 ± 1.14 days. Rats in the CRM and CMP 48/80 groups had significantly slower rejections and died at day 17.40 ± 1.67 or 14.20 ± 2.28, respectively (P < .05). Rats in the syngeneic group survived more than 60 days. Rejection activity indexes (RAIs) and liver functions were all alleviated through CRM or CMP 48/80 preconditioning. Interferon-γ messenger RNA (mRNA) expressions were reduced and interleukin-10 mRNA levels were higher in allografts in the CRM and CMP 48/80 groups, compared with the PBS group. These were confirmed by testing serum interferon-γ and interlerkin-10. CONCLUSION Preconditioning donor livers with CRM or CMP 48/80 can reduce AR and prolong survival of recipients after OLT.
Collapse
Affiliation(s)
- M Yang
- Department of General Surgery, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China; Department of General Surgery, Xinhua Hospital, affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y Ma
- Department of General Surgery, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China; Department of General Surgery, Xinhua Hospital, affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J Ding
- Department of General Surgery, Xinhua Hospital, affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - L Rao
- Department of General Surgery, Xinhua Hospital, affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J Li
- Department of General Surgery, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China; Department of General Surgery, Xinhua Hospital, affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| |
Collapse
|
22
|
Zhou C, Li C, Zhou B, Rao L, McNally EM, Shanahan CM, Zhang QP. NOVEL NESPRIN-1 MUTATIONS DISRUPT NE ORGANIZATION AND INDUCE DILATED CARDIOMYOPATHY. Heart 2014. [DOI: 10.1136/heartjnl-2014-306916.56] [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: 11/03/2022]
|
23
|
Yuan G, Wei Q, Tie J, Wang C, Rao L, Zhang W. Synergistic sporicidal effect of ethanol on a combination of orthophthalaldehyde and didecyldimethylammonium chloride. Lett Appl Microbiol 2014; 59:272-7. [PMID: 24739063 DOI: 10.1111/lam.12271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 04/06/2014] [Accepted: 04/07/2014] [Indexed: 12/19/2022]
Abstract
UNLABELLED The objective of this study was to evaluate the potential synergistic effect of ethanol on a combination of orthophthalaldehyde (OPA) and didecyldimethylammonium chloride (DDAC) against the spores of Bacillus subtilis var. Niger. The quantitative carrier test for sporicidal testing of high-level disinfectants according to the guideline of China (Technical Standard for Disinfection 2002) was used as method. Considerable synergistic effect was observed after a 30-min treatment at 20°C. There was an augment in mean log reduction as the concentration of DDAC was increased ranging from 0·2 to 3 g l(-1) in combination with 6 g l(-1) OPA. Ten and 20% ethanol in combination with 6 g l(-1) OPA and 2 g l(-1) DDAC caused more than a 3-log reduction while either 6 g l(-1) OPA, 2 g l(-1) DDAC and 20% ethanol alone or a combination of two of the three agents produced less than a 1-log reduction. Further, 40-min exposure time of combination of OPA, DDAC and 20% ethanol led to greater than a 5-log reduction in spores, and no spore growth was observed following 60- and 90-min exposures. SIGNIFICANCE AND IMPACT OF THE STUDY Orthophthalaldehyde (OPA) is very effective at concentrations far lower than its recommended in-use concentration of 0·5% (w/v) and is equally effective against both the gram-negative and gram-positive bacteria. However, it shows lower activity against spores. The synergistic sporicidal effect exhibited by ethanol on a combination of OPA and DDAC can be considered to enhance sporicidal activity for using in situations of sterilization, to reduce in-use concentration of OPA used alone, which may minimize its side effect. OPA may be a more satisfactory and the first-choice agent to replace glutaraldehyde (GTA) as a high-level disinfectant for medical devices.
Collapse
Affiliation(s)
- G Yuan
- Evaluation and Research Center for Disinfection, Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, China
| | | | | | | | | | | |
Collapse
|
24
|
Lin J, Peng Y, Zhou B, Dou Q, Li Y, Yang H, Zhang L, Rao L. Genetic association of IL-21 polymorphisms with dilated cardiomyopathy in a Han Chinese population. Herz 2014; 40:534-41. [PMID: 24445858 DOI: 10.1007/s00059-013-4039-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Accepted: 12/08/2013] [Indexed: 02/05/2023]
Abstract
BACKGROUND Autoimmune abnormalities appear to be major predisposing factors for dilated cardiomyopathy (DCM). Interleukin-21 (IL-21) gene polymorphisms have been previously found to be associated with autoimmune diseases. This study aimed to assess the role of IL-21 in DCM in a Han Chinese population. PATIENTS AND METHODS A total of 364 independent DCM patients and 384 unrelated healthy controls were recruited for this case-control association study. rs2055979 and rs12508721 were genotyped by PCR-RFLP. IL-21 plasma levels in samples from DCM and control individuals were evaluated by ELISA. The association between the SNPs and overall survival (OS) was evaluated by Kaplan-Meier analysis. Hazard ratios and 95 % confidence intervals (CIs) were assessed in a Cox regression analysis with adjustment for sex and age. RESULTS The T allele frequencies of both SNPs were higher in DCM patients than in controls (p < 0.001). The genotypic frequencies of rs2055979 G > T and rs12508721 C > T were associated with DCM in the codominant, dominant, and recessive models (p < 0.05). IL-21 plasma levels in patients were higher than those of the control subjects (p = 0.009). The TT genotypes of both SNPs were associated with significantly higher plasma levels (prs2055979 = 0.03, prs12508721 < 0.001). Kaplan-Meier analysis showed that the genotypic frequencies of both SNPs were associated with OS in the dominant and the recessive models (p < 0.001). The TT genotypes of both SNPs were associated with the worst OS (p < 0.001). CONCLUSION Our findings suggest that theIL-21 gene plays an important role in susceptibility to DCM as well as in the clinical outcome of this ailment in the Han Chinese population.
Collapse
Affiliation(s)
- J Lin
- Department of Cardiology, West China Hospital, Sichuan University, 610041, Chengdu, P.R. China
| | | | | | | | | | | | | | | |
Collapse
|
25
|
Ma H, Rao L, Wang HL, Mao ZW, Lei RH, Yang ZY, Qing H, Deng YL. Transcriptome analysis of glioma cells for the dynamic response to γ-irradiation and dual regulation of apoptosis genes: a new insight into radiotherapy for glioblastomas. Cell Death Dis 2013; 4:e895. [PMID: 24176853 PMCID: PMC3920930 DOI: 10.1038/cddis.2013.412] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 08/09/2013] [Accepted: 09/06/2013] [Indexed: 11/11/2022]
Abstract
Ionizing radiation (IR) is of clinical importance for glioblastoma therapy; however, the recurrence of glioma characterized by radiation resistance remains a therapeutic challenge. Research on irradiation-induced transcription in glioblastomas can contribute to the understanding of radioresistance mechanisms. In this study, by using the total mRNA sequencing (RNA-seq) analysis, we assayed the global gene expression in a human glioma cell line U251 MG at various time points after exposure to a growth arrest dose of γ-rays. We identified 1656 genes with obvious changes at the transcriptional level in response to irradiation, and these genes were dynamically enriched in various biological processes or pathways, including cell cycle arrest, DNA replication, DNA repair and apoptosis. Interestingly, the results showed that cell death was not induced even many proapoptotic molecules, including death receptor 5 (DR5) and caspases were activated after radiation. The RNA-seq data analysis further revealed that both proapoptosis and antiapoptosis genes were affected by irradiation. Namely, most proapoptosis genes were early continually responsive, whereas antiapoptosis genes were responsive at later stages. Moreover, HMGB1, HMGB2 and TOP2A involved in the positive regulation of DNA fragmentation during apoptosis showed early continual downregulation due to irradiation. Furthermore, targeting of the TRAIL/DR5 pathway after irradiation led to significant apoptotic cell death, accompanied by the recovered gene expression of HMGB1, HMGB2 and TOP2A. Taken together, these results revealed that inactivation of proapoptotic signaling molecules in the nucleus and late activation of antiapoptotic genes may contribute to the radioresistance of gliomas. Overall, this study provided novel insights into not only the underlying mechanisms of radioresistance in glioblastomas but also the screening of multiple targets for radiotherapy.
Collapse
Affiliation(s)
- H Ma
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | | | | | | | | | | | | | | |
Collapse
|
26
|
Shivakumar BM, Lakshmankumar B, Rao L, Bhat G, Suvarna D, Pai CG. Colorectal neoplasia in long-standing ulcerative colitis - a prospective study from a low-prevalence area. Colorectal Dis 2013; 15:e462-8. [PMID: 23663532 DOI: 10.1111/codi.12276] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Accepted: 01/23/2013] [Indexed: 02/06/2023]
Abstract
AIM Despite increasing recognition of ulcerative colitis (UC) in Asia in recent decades, reports on the occurrence of colorectal neoplasia (CRN) in UC are scarce and surveillance for this complication is not routinely practised in this region. We aimed to assess the outcome of a newly initiated pilot screening programme for screening CRN among UC patients in India. METHOD In this prospective study from an academic hospital setting, patients with UC at high risk of CRN were offered screening by magnifying chromocolonoscopy and the frequency of neoplastic lesions was assessed. RESULTS Twenty-nine (70.7%) of 41 eligible patients [a median age of 46 (interquartile range 36-54.5) years; 17 (58.6%) men] enrolled for surveillance; 41 colonoscopies were undertaken over 42 months. The median disease duration was 10 (interquartile range 7.5-14.5) years. Sixteen (55.1%) had extensive colitis. On initial screening, low-grade dysplasia (LGD) was seen in five (17.2%) and high-grade dysplasia (HGD) in three (10.3%). Of these three, one accepted proctocolectomy immediately, one underwent surgery for adenocarcinoma and one refused surgery. Twelve follow-up colonoscopies in nine patients revealed three new LGD. CONCLUSIONS High-grade dysplasia and subsequent adenocarcinoma can be detected with careful follow-up in Indian patients with long-standing UC but acceptance of surveillance and subsequent therapy are suboptimal. We found evidence that screening and surveillance programmes are useful for detecting neoplasias in UC, and need to be customized for this region.
Collapse
Affiliation(s)
- B M Shivakumar
- Department of Gastroenterology and Hepatology, Manipal University, Manipal, India
| | | | | | | | | | | |
Collapse
|
27
|
Chu J, Zhou Z, Hong G, Guan J, Li S, Rao L, Meng Q, Yang Z. High-resolution MRI of the intraparotid facial nerve based on a microsurface coil and a 3D reversed fast imaging with steady-state precession DWI sequence at 3T. AJNR Am J Neuroradiol 2013; 34:1643-8. [PMID: 23578676 DOI: 10.3174/ajnr.a3472] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND PURPOSE 3D high-resolution MR imaging can provide reliable information for defining the exact relationships between the intraparotid facial nerve and adjacent structures. The purpose of this study was to explore the clinical value of using a surface coil combined with a 3D-PSIF-DWI sequence in intraparotid facial nerve imaging. MATERIALS AND METHODS Twenty-one healthy volunteers underwent intraparotid facial nerve scanning at 3T by using the 3D-PSIF-DWI sequence with both the surface coil and the head coil. Source images were processed with MIP and MPR to better delineate the intraparotid facial nerve and its branches. In addition, the SIR of the facial nerve and parotid gland was calculated. The number of facial nerve branches displayed by these 2 methods was calculated and compared. RESULTS The display rates of the main trunk, divisions (cervicofacial, temporofacial), and secondary branches of the intraparotid facial nerve were 100%, 97.6%, and 51.4% by head coil and 100%, 100%, and 83.8% by surface coil, respectively. The display rate of secondary branches of the intraparotid facial nerve by these 2 methods was significantly different (P < .05). The SIRs of the intraparotid facial nerve/parotid gland in these 2 methods were significantly different (P < .05) at 1.37 ± 1.06 and 1.89 ± 0.87, respectively. CONCLUSIONS The 3D-PSIF-DWI sequence combined with a surface coil can better delineate the intraparotid facial nerve and its divisions than when it is combined with a head coil, providing better image contrast and resolution. The proposed protocol offers a potentially useful noninvasive imaging sequence for intraparotid facial nerve imaging at 3T.
Collapse
Affiliation(s)
- J Chu
- Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Li Y, Peng Y, Li C, Zhou B, Rao L. Correlational study of CD226 gene single nucleotide polymorphism and dilated cardiomyopathy in the Chinese Han population. Int J Cardiol 2013. [DOI: 10.1016/s0167-5273(13)70539-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
29
|
Yang H, Li C, Li C, Xie Q, Li Y, Rao L. The value of three-dimensional spherical index in assessing different type of left ventricular remodeling. Int J Cardiol 2013. [DOI: 10.1016/s0167-5273(13)70604-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
30
|
Gourgiotis A, Isnard H, Nonell A, Aubert M, Stadelmann G, Dupont E, AlMahamid I, Tiang G, Rao L, Lukens W, Cassette P, Panebianco S, Letourneau A, Chartier F. Bk and Cf chromatographic separation and 249Bk/248Cm and 249Cf/248Cm elemental ratios determination by inductively coupled plasma quadrupole mass spectrometry. Talanta 2013; 106:39-44. [DOI: 10.1016/j.talanta.2012.11.056] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Revised: 11/19/2012] [Accepted: 11/24/2012] [Indexed: 10/27/2022]
|
31
|
Monappa V, Naik AM, Mathew M, Rao L, Rao SK, Ramachandra L, PadmaPriya J. Phosphaturic mesenchymal tumour of the mandible--the useful criteria for a diagnosis on fine needle aspiration cytology. Cytopathology 2012. [PMID: 23198882 DOI: 10.1111/cyt.12030] [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] [Indexed: 11/29/2022]
Affiliation(s)
- V Monappa
- Department of Pathology, Kasturba Medical College, Manipal University, Manipal, Karnataka, IndiaOrthopaedic Surgery, Kasturba Medical College, Manipal University, Manipal, Karnataka, IndiaGeneral Surgery, Kasturba Medical College, Manipal University, Manipal, Karnataka, India
| | | | | | | | | | | | | |
Collapse
|
32
|
Abstract
Sckhwannoma is a benign tumor arising from the Schwann cells of nerve sheath.Through they arise more commonly in the head and neck than other regions, a through search in the liturature including medline revealed only about 47 reported cases of schwannoma in the paranasal sinuses of which the maxillary sinus involvement is more common. We report three cases of schwannoma arising from unusual sites in the paranasal sinuses with different modes of presttation each requiring a specific approach for surgical excision Transnasal endoscopic approach in combination with vonventional approaches is of immense value in the surgical management of these benign lessions of the paranasal sinuses.
Collapse
Affiliation(s)
- P Hazarika
- Department of ENT-Head & Neck Surgery, Kasturba Medical College, 576 119 Manipal, Karnataka, India
| | | | | | | |
Collapse
|
33
|
Abstract
Fungal infections are common in a tropical country like India. Among the Zygomycosis infections, those caused by Mucorales are more prevalent. However, there exists another order of zygomycetes, the Entomophthorales, which rarely cause clinical disease. We report a rare cause of fungal infection of the maxillo-facial region and the oropharynx in a previously healthly male adult caused by Conidiobolus coronata of the order Entomophthorales to highlight the clinical presentation and treatment of this rare, chronic, indolent form of fungal infection.
Collapse
Affiliation(s)
- D R Nayak
- Dept. of ENT and Head and Neck Surgery, Kasturba Medical College, Manipal-576 119, Karnataka
| | | | | |
Collapse
|
34
|
Joe BH, Sohn IS, Park BJ, Park JH, Jin ES, Cho JM, Kim CJ, Saleh A, Matsumori A, Negm H, Shalaby M, Haykal M, Tsverava M, Tsverava D, Lobjanidse N, Han JY, Ha SI, Yang JS, Choi DH, Chung JW, Koh YY, Chang KS, Hong SP, Adachi H, Taguchi T, Oshima H, Huang FQ, Zhong L, Le TT, Tan RS, Zhao QY, Yu SB, Huang H, Qin M, Cui HY, Huang T, Huang CX, Chan WYW, Blomqvist A, Melton IC, Crozier IG, Noren K, Troughton RW, Indriani S, Siswanto BB, Soerarso R, Hersunarti N, Harimurti GM, Margey R, Hynes B, Pomerantsev E, Moran D, Hatim M, Kiernan T, Inglessis I, Palacios I, Margey R, Suh W, Witzke C, Moran D, Hatim M, Kiernan T, Yeh R, Sahkuja R, Seto A, Palacios I, Chen Y, Chen Y, Li H, Zhou B, Shi SQ, Rao L, Gong H, Wang X, Ling Y, Obispo-Mortos SA, Reyes DRC, Cabasan G, Caguioa EVS, Ramirez MFL, Navarra SV, Wang S, Lam YY, Fang F, Shang Q, Luo XX, Liu M, Wang J, Sanderson JE, Sun JP, Yu CM, Wang S, Lam YY, Fang F, Shang Q, Luo XX, Liu M, Wang J, Sanderson JE, Sun JP, Yu CM, Hernandez-Madrid A, Matia Frances R, Bullon M, Moro C, Luo XX, Fang F, Sun JP, Sanderson JE, Kwong SW, Lee PW, Lam YY, Yu CM, Larina VN, Bart BY. P058 * APACHE II score, rather than cardiac function, may predict poor prognosis in patients with stress-induced cardiomyopathy. Eur Heart J Suppl 2012. [DOI: 10.1093/eurheartj/sur027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
35
|
Wong HL, Ng SH, Kwok WT, Yeung CL, Yu SY, Wan YP, Wan S, Underwood MJ, Bai WJ, Li H, Tang H, Wang H, Rao L, Li H, Bai WJ, Chen Y, Tang H, Peng Y, Rao L, Park YH, Han DC, Sohn CB, Kim JS, Kim J, Kim JH, Chun KJ, Owlia MB, Mirhoseini SJ, Naderi N, Mostafavi Pour Manshadi SMY, Sayegh S, Fei HW, Lin CY, He YL, Huang HL, She HL, Chan PH, Di Mario C, Rubens M, Cheung SCW, Soo WM, Ling LH, Chan MY, Loh JP, Poh KK, Xin W, Hong T. P113 * Clinical outcomes following double and triple valve surgery in Hong Kong. Eur Heart J Suppl 2012. [DOI: 10.1093/eurheartj/sur032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
36
|
Syam Kumar U, Raghunadh A, Meruva S, Kumar N, Kumar G, Rao L. An Efficient and Practical Synthesis of Aryl and Hetaryl α-Keto Esters. SYNTHESIS-STUTTGART 2011. [DOI: 10.1055/s-0031-1289647] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
37
|
Sarria EE, Mattiello R, Rao L, Tiller CJ, Poindexter B, Applegate KE, Granroth-Cook J, Denski C, Nguyen J, Yu Z, Hoffman E, Tepper RS. Quantitative assessment of chronic lung disease of infancy using computed tomography. Eur Respir J 2011; 39:992-9. [PMID: 22005925 DOI: 10.1183/09031936.00064811] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The aims of this study were to determine whether infants and toddlers with chronic lung disease of infancy (CLDI) have smaller airways and lower lung density compared with full-term healthy controls. Multi-slice computed tomography (CT) chest scans were obtained at elevated lung volumes during a brief respiratory pause in sedated infants and toddlers; 38 CLDI were compared with 39 full-term controls. For CLDI subjects, gestational age at birth ranged from 25 to 29 weeks. Airway size was measured for the trachea and the next three to four generations into the right lower lobe; lung volumes and tissue density were also measured. The relationship between airway size and airway generation differed between the CLDI and full-term groups; the sizes of the first and second airway generations were larger in the shorter CLDI than in the shorter full-term subjects. The increased size in the airways in the CLDI subjects was associated with increasing mechanical ventilation time in the neonatal period. CLDI subjects had a greater heterogeneity of lung density compared with full-term subjects. Our results indicate that quantitative analysis of multi-slice CT scans at elevated volumes provides important insights into the pulmonary pathology of infants and toddlers with CLDI.
Collapse
Affiliation(s)
- E E Sarria
- Dept of Pediatrics, James Whitcomb Riley Hospital for Children, Indiana University School of Medicine, Indianapolis, IN 46202-5225, USA
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Baig W, Attur R, Chawla A, Reddy S, Pillai S, Rao L, Rao G, Ashok K, Yegneswaran P. Epididymal and prostatic histoplasmosis in a renal transplant recipient from southern India. Transpl Infect Dis 2011; 13:489-91. [DOI: 10.1111/j.1399-3062.2011.00660.x] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
39
|
Abstract
Disseminated or systemic infection with nocardiosis is an opportunistic infection that is seen in immunocompromised individuals and can involve any organ. The primary infection in systemic nocardiosis usually occurs in the lungs and subsequently hematogenous dissemination occurs in other organs of the body. Nocardia infection of the kidney usually manifests as multiple pyelonephritic abscesses. We report a case of isolated renal nocardiosis, without involvement of the lungs or other organs in a patient with AIDS who presented with symptoms of renal failure. The nephrectomy specimen showed multiple calculi in the calyceal system and a tumorous mass with necrotic areas, which histologically showed features of nocardiosis. The case is being presented as this is an unusual manifestation of renal nocardiosis.
Collapse
Affiliation(s)
- K Pai
- Department of Pathology, Karturba Medical College, Manipal, Karnataka, India
| | | |
Collapse
|
40
|
Sarria EE, Mattiello R, Rao L, Wanner MR, Raske ME, Tiller C, Kimmel R, Tepper RS. Computed tomography score and pulmonary function in infants with chronic lung disease of infancy. Eur Respir J 2011; 38:918-23. [PMID: 21478219 DOI: 10.1183/09031936.00172310] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Chronic lung disease of infancy (CLDI) remains a common outcome among infants born extremely prematurely. In older children and adults with lung disease, pulmonary function and computed tomography (CT) scores are used to follow up respiratory disease and assess disease severity. For infants and toddlers, however, these outcomes have been used very infrequently and most often, a dichotomous respiratory outcome (presence or absence of CLDI) is employed. We evaluated the performance of CT score and pulmonary function to differentiate infants and toddlers with CLDI from a control group. CT scans, forced expiratory flows and pulmonary diffusing capacity were obtained in 39 CLDI patients and 41 controls (aged 4-33 months). CT scans were quantified using a scoring system, while pulmonary function was expressed as Z-scores. CT score outperformed pulmonary function in identifying those with CLDI. There were no significant correlations between CT score and pulmonary function. CT score had a better performance than pulmonary function in differentiating individuals with CLDI; however, these outcomes may reflect differing components of the pulmonary pathophysiology of CLDI. This new information on pulmonary outcomes can assist in designing studies with these parameters. Future studies will be required to evaluate which of the outcomes can better detect improvement with therapeutic intervention and/or lung growth.
Collapse
Affiliation(s)
- E E Sarria
- Section of Pulmonology, James Whitcomb Riley Hospital for Children, 702 Barnhill Drive, Indianapolis, IN 46202-5225, USA
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Yagain K, Rao L, Vidhyalakshmi S, Kudva A. Cystic lymphangioma of adrenal gland. Afr J Urol 2010. [DOI: 10.1007/s12301-010-0013-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
|
42
|
Wu Z, Chen J, Ren J, Bao L, Liao J, Cui C, Rao L, Li H, Gu Y, Dai H, Zhu H, Teng X, Cheng L, Xiao L. Generation of Pig-Induced Pluripotent Stem Cells with a Drug-Inducible System. J Mol Cell Biol 2010. [DOI: 10.1093/jmcb/mjq004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
43
|
Moghe GA, Kaur MS, Thomas AM, Raseswari T, Swapna M, Rao L. The role of 9qh+ in phenotypic and genotypic heterogeneity in a Van der Woude syndrome pedigree. J Indian Soc Pedod Prev Dent 2010; 28:104-9. [PMID: 20660977 DOI: 10.4103/0970-4388.66749] [Citation(s) in RCA: 6] [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: 11/04/2022] Open
Abstract
Van der Woude syndrome (VWS) (OMIM 119300) is a dominantly inherited developmental disorder that is characterized by pits and/or sinuses of the lower lip and cleft lip and/or cleft palate. Mutations in the interferon regulatory factor 6 gene (IRF6) have been recently identified in patients with VWS, with more than 60 mutations reported. We report the phenotypic variants of the syndrome in a family and present the application of the multicolor chromosome banding (mBAND) analysis in the identification of complex intrachromosome rearrangements of chromosome 9 in a child with VWS. The authors conclude that increased heterochromatin on chromosome 9 did not have any effect on the phenotypic expression of the syndrome in the family that was studied.
Collapse
Affiliation(s)
- G A Moghe
- Department of Pedodontics and Preventive Dentistry, Panineeya Institute of Dental Sciences and Research Centre, Dilsukhnagar, Hyderabad, Andhra Pradesh, India.
| | | | | | | | | | | |
Collapse
|
44
|
Rao L, Turlapati R, Patel M, Panda B, Tosh D, Mangalipalli S, Tiwari A, Orunganti V, Rose D, Anand A, Kulashekaran M, Priya S, Mishra R, Majumdar K, Aggarwal R, Singh L. Cytogenetic Characterization and Fluorescence in situ Hybridization of (GATA) 10 Repeats on Established Primary Cell Cultures from Indian Water Snake (Natrix piscator) and Indian Mugger (Crocodylus palustris) Embryos. Cytogenet Genome Res 2010; 127:287-96. [DOI: 10.1159/000304046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
|
45
|
Priya J P, Valiathan M, Rao L. Extra-Osseous Osteochondroma of the Knee. Malays Orthop J 2010. [DOI: 10.5704/moj.1003.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
|
46
|
Ruprai R, Shetty J, Kumar P, Rao L. P577 Bilateral massive ovarian edema - A rare cause of acute abdomen. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)62067-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
47
|
Abstract
Summary
The complexation between uranium(VI) and malonate in 1.05 mol kg−1 NaClO4 was studied at variable temperatures (25, 35, 45, 55 and 70 °C). The formation constants of three successive complexes, UO2(OOCCH2COO), UO2(OOCCH2COO)2
2− and UO2(OOCCH2COO)3
4−, and the molar enthalpies of complexation were determined by potentiometry and calorimetry. The heat capacity of the complexation, Δ Co
p,m(MLj), is calculated to be 96 ± 12, 195 ± 15 and 267 ± 22 J K−1 mol−1 for j=1, 2 and 3, respectively. Extended X-ray Absorption Fine Structure Spectroscopy helped to characterize the coordination modes in the complexes in solution. UV/Vis absorption and luminescence spectra at different temperatures provided qualitative information on the temperature effect. The effect of temperature on the complexation between uranium(VI) and malonate is discussed in terms of the electrostatic model and compared with the complexation between uranium(VI) and acetate.
Collapse
|
48
|
Chen Y, Zhou B, Peng Y, Wang Y, Li C, Ding X, He X, Xu J, Huang L, Rao L. Interleukin-23 receptor gene polymorphisms is associated with dilated cardiomyopathy in Chinese Han population. ACTA ACUST UNITED AC 2009; 73:330-4. [DOI: 10.1111/j.1399-0039.2009.01217.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
49
|
Rao L, Chen B, Zhou B, Zhang L. O111 The study of TNNT2 gene mutations in Chinese patients with dilated cardiomyopathy. Int J Cardiol 2008. [DOI: 10.1016/s0167-5273(08)70194-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
50
|
Prakash M, Shetty JK, Rao L, Sharma S, Rodrigues A, Prabhu R. Serum paraoxonase activity and protein thiols in chronic renal failure patients. Indian J Nephrol 2008; 18:13-6. [PMID: 20368914 PMCID: PMC2847723 DOI: 10.4103/0971-4065.41282] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Serum paraoxonase is known to prevent low-density lipoprotein oxidation and atherogenesis. Association of paraoxonase with the oxidative status and lipid profile in chronic renal failure (CRF) patients on conservative management and those on chronic maintenance hemodialysis was analyzed in the present study. Serum paraoxonase, protein thiols, lipid hydroperoxides, lipid profile, creatinine and albumin levels were estimated by spectrophotometric methods in CRF patients on conservative management, those on hemodialysis and in healthy controls. Total cholesterol, triglycerides, low-density lipoprotein cholesterol, lipid hydroperoxides and creatinine levels were higher and high-density lipoprotein cholesterol, protein thiols, albumin levels and paraoxonase activity were lower in patients than in healthy controls. Paraoxonase activity correlated positively with protein thiols and high-density lipoprotein cholesterol and negatively with low-density lipoprotein cholesterol and lipid hydroperoxides. In conclusion, paraoxonase activity is decreased in CRF patients particularly on chronic maintenance hemodialysis and correlates well with the oxidative stress markers.
Collapse
Affiliation(s)
- M. Prakash
- Department of Biochemistry, Kasturba Medical College, Manipal, India
| | - J. K. Shetty
- Department of Biochemistry, Kasturba Medical College, Manipal, India
| | - L. Rao
- Department of Biochemistry, Kasturba Medical College, Manipal, India
| | - S. Sharma
- Department of Biochemistry, Kasturba Medical College, Manipal, India
| | - A. Rodrigues
- Department of Biochemistry, Kasturba Medical College, Manipal, India
| | - R. Prabhu
- Department of Nephrology, Kasturba Medical College, Manipal, India
| |
Collapse
|