101
|
Sharma M, Bharani A, Chadha D, Choudhry N, George O, Gupta R, Gupta S, S H, Kalita H, Kumar S, Naik S, Negi P, Patil C, Reddy S, Shukla D. PM199 Rationale, Design and Feasibility of a Nationwide Prospective Registry of Management of Acute Coronary Events (Mace) in India. Glob Heart 2016. [DOI: 10.1016/j.gheart.2016.03.359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
102
|
Gerlach UA, Vrakas G, Sawitzki B, Macedo R, Reddy S, Friend PJ, Giele H, Vaidya A. Abdominal Wall Transplantation: Skin as a Sentinel Marker for Rejection. Am J Transplant 2016; 16:1892-900. [PMID: 26713513 DOI: 10.1111/ajt.13693] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 11/24/2015] [Accepted: 12/20/2015] [Indexed: 01/25/2023]
Abstract
Abdominal wall transplantation (AWTX) has revolutionized difficult abdominal closure after intestinal transplantation (ITX). More important, the skin of the transplanted abdominal wall (AW) may serve as an immunological tool for differential diagnosis of bowel dysfunction after transplant. Between August 2008 and October 2014, 29 small bowel transplantations were performed in 28 patients (16 male, 12 female; aged 41 ± 13 years). Two groups were identified: the solid organ transplant (SOT) group (n = 15; 12 ITX and 3 modified multivisceral transplantation [MMVTX]) and the SOT-AWTX group (n = 14; 12 ITX and 2 MMVTX), with the latter including one ITX-AWTX retransplantation. Two doses of alemtuzumab were used for induction (30 mg, 6 and 24 h after reperfusion), and tacrolimus (trough levels 8-12 ng/mL) was used for maintenance immunosuppression. Patient survival was similar in both groups (67% vs. 61%); however, the SOT-AWTX group showed faster posttransplant recovery, better intestinal graft survival (79% vs. 60%), a lower intestinal rejection rate (7% vs. 27%) and a lower rate of misdiagnoses in which viral infection was mistaken and treated as rejection (14% vs. 33%). The skin component of the AW may serve as an immune modulator and sentinel marker for immunological activity in the host. This can be a vital tool for timely prevention of intestinal graft rejection and, more important, avoidance of overimmunosuppression in cases of bowel dysfunction not related to graft rejection.
Collapse
|
103
|
Salem M, Xiu J, El-Deiry W, Reddy S, Philip P, Gatalica Z, Khan S, Denlinger C, Mikhail S, Smaglo B, Pishvaian M, Hwang J, Shields A, Marshall J. O-005 Comparative molecular analyses of esophageal adenocarcinoma, esophageal squamous cell carcinoma, and gastric adenocarcinoma, and impact of molecular profile on outcome. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw198.05] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
104
|
Gatalica Z, Feldman R, Russell K, Voss A, Reddy S. 1PD Differences in expression of predictive biomarkers between primary and metastatic non-small cell lung cancer tumors. J Thorac Oncol 2016. [DOI: 10.1016/s1556-0864(16)30116-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
105
|
Kim E, Feldman R, Carrizosa D, Gatalica Z, Reddy S, Yoo G. Molecular Attributes of Metastatic Thyroid Cancers. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2015.12.287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
106
|
Gatalica Z, Vranic S, Ghazalpour A, Xiu J, Ocal I, McGill J, Bender R, Discianno E, Sanati S, Reddy S, Pockaj B. Abstract P4-09-19: Comprehensive multiplatform molecular profiling identifies potentially targetable biomarkers in malignant phyllodes tumors of the breast. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p4-09-19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Malignant phyllodes tumors are rare breast malignancies (0.1% of all breast tumors) with limited effective treatment options for recurrent and metastatic disease. Recent trials indicated a potential for anti-angiogenic therapy in soft tissue sarcomas, which led us to investigate these pathways.
Materials and Methods: Thirty-five malignant phyllodes tumors (including two cases with matched primary and metastatic tumors) were profiled using gene sequencing (Next-generation and Sanger), gene copy number analysis (in-situ hybridization), whole genome RNA expression, and protein expression (immunohistochemical assay).
Results: RNA microarray assay showed consistent over-expression of genes involved in angiogenesis including VEGFA, Angiopoietin2, VCAM1, PDGFRA, PTTG1, and CYP3A5 in all cases analyzed (n=5). No mutations in KDR (VEGFR2) were detected (0/26). EGFR protein overexpression was observed in 25/26 (96%) of cases with amplification of the EGFR gene in 8 cases (33%). EGFR gene mutations were identified in 2 cases (8%) including one case with presumed pathogenic V774M mutation and one case with EGFRvIII mutation. The most common mutations included those of TP53 (50%) and PIK3CA (15%) while other mutations (BRCA1, BRCA2, RET, CDH1, MLH1, ATM) were rare affecting single phyllodes cases. Two cases with matched primary and metastatic cancers harbored the same mutations in both sites (PIK3CA/KRAS and RB1 gene mutations, respectively).
Conclusions: Comprehensive multiplatform profiling approach to phyllodes tumors identifies various molecular alterations of which some are potentially actionable. Our data suggests that anti-angiogenic therapy may also be effective in patients with malignant phyllodes tumor. Evaluation of EGFR pathway discovered consistent protein over-expression but rare activating mutations, which necessitates refinement in patient selection targeting these pathways.
Citation Format: Gatalica Z, Vranic S, Ghazalpour A, Xiu J, Ocal I, McGill J, Bender R, Discianno E, Sanati S, Reddy S, Pockaj B. Comprehensive multiplatform molecular profiling identifies potentially targetable biomarkers in malignant phyllodes tumors of the breast. [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 P4-09-19.
Collapse
|
107
|
Arguello D, Abbott B, Reddy S, Gatalica Z, Obeid E, Goldstein L. Abstract P3-07-30: Molecular profiling comparison of BRCA1/2-mutated and BRCA1/2 non-mutated triple-negative breast cancer (TNBC). Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p3-07-30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Triple-negative breast cancer (TNBC) is one type of breast cancer that remains challenging because of its aggressive nature and the lack of effective targeted therapy for it. Molecular profiling has revealed different subtypes, indicating a potential for promising targeted therapy such as androgen blockade and PARP inhibition in some TNBCs. The purpose of this study is to identify differences in BRCA1/2 mutated and non-mutated TNBC to shed light on potential therapeutic options in both subtypes, utilizing a multiplatform approach.
Methods: A cohort of 386 triple-negative breast cancer specimens were tested via a multiplatform profiling service (Caris Life Sciences, Phoenix, AZ) consisting of gene sequencing (next generation sequencing [NGS]), protein expression (immunohistochemistry [IHC]) and gene amplification (fluorescence or chromogenic in situ hybridization [FISH or CISH]). Primary and metastatic specimens were evaluated. Tumor specimens with any BRCA1 and/or BRCA2 mutation (i.e. pathogenic or variant of unknown significance) were categorized as "BRCA1/2-mutated", while all others were considered "BRCA1/2 non-mutated".
Results: In our cohort, 16.3% (63/386) of specimens were BRCA1/2-mutated while 83.7% (323/386) had no BRCA1/2 alteration detected. Amongst the highest rates of protein expression in BRCA1/2-mutated and non-mutated specimens were biomarkers like TOPO1 (63.5% and 63.4%), EGFR (65.2% and 67.4%), and the immune checkpoint biomarker, PD-1 (65.1% and 61.9%), with non-statistically significant differences. Differences noted between BRCA1/2-mutated and non-mutated specimens were detected by IHC in AR (11.1% versus 22.0%, p=0.0585) and PTEN (47.6% versus 59.6%, p=0.0941), with both trending but not achieving statistical significance. The highest overall mutation rate in both BRCA1/2-mutated and non-mutated were TP53 (80.6% and 73.1%, p=0.2659). Differences were also noted between BRCA1/2-mutated and non-mutated specimens by NGS in APC (6.3% versus 1.9%, p = 0.0644) and PIK3CA (11.1% versus 25.8%, p = 0.0137), with PIK3CA being statistically significant.
Conclusion: Multiplatform tumor profiling identified differences in molecular profiles between BRCA1/2 mutated and BRCA1/2 non-mutated TNBC. Our findings raise the possibility for future investigation of potential combination therapeutic targeted therapy. Increased AR overexpression in BRCA1/2 non-mutated specimens is consistent with reports from other institutions. Further studies utilizing tumor profiling to elucidate the biological differences in in TNBC subtypes are warranted, to optimally include patients on clinical trials with specific targeted therapy and possibly improve treatment options.
Citation Format: Arguello D, Abbott B, Reddy S, Gatalica Z, Obeid E, Goldstein L. Molecular profiling comparison of BRCA1/2-mutated and BRCA1/2 non-mutated triple-negative breast cancer (TNBC). [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 P3-07-30.
Collapse
|
108
|
Xiu J, Obeid E, Gatalica Z, Reddy S, Goldstein LJ, Link J, Waisman J. Abstract P3-07-26: Biomarker comparison between androgen receptor – Positive-triple-negative breast cancer (AR+ TNBC) and quadruple-negative breast cancer (QNBC). Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p3-07-26] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Quadruple-negative breast cancer (QNBC) is a subgroup of triple-negative breast cancer (TNBC) that lacks androgen receptor (AR) expression. While TNBC patients with AR expression have shown a promising response to AR-targeted therapies, QNBC patients' treatment options remain limited, with no targeted therapy We investigated the biomarker profiles of large cohorts of AR+TNBC and QNBC to identify their molecular differences.
Method: TNBC tumors (defined as negative by IHC for ER, PR, Her2 and ISH for Her2) referred to Caris Life Sciences (Phoenix, AZ) between 2009 and 2015 were evaluated by board-certified pathologists with a combination of immunohistochemistry (AR, cKIT, cMET, EGFR, ER, ERCC1, Her2, MGMT, PD-1, PD-L1, PGP, PR, PTEN, RRM1, SPARC, TLE3, TOPO2A, TOPO1, TS and TUBB3), fluorescent/chromogenic in-situ hybridization (cMET, EGFR, Her2, TOP2A), and sequencing (Next-generation and Sanger). Tumors evaluated included a mix of primary tumors and metastases. QNBC tumors were defined as TNBC tumors that showed negative AR expression (<10% of cells staining).
Results: Among 2,071 TNBC tumors identified, 1,952 tumors had AR IHC performed, out of which 1,612 (83%) were QNBC and 340 (17%) were AR+ TNBC tumors. Tumor expression of PD-L1 (Ab: SP142, Spring Bioscience/130021, R&D Systems, cutoff used: 2+, 5%) was significantly higher in QNBC compared to AR+TNBC tumors (18% vs. 8%, p=0.01), while PD-1 (Ab: NAT105, Ventana) expression on tumor-infiltrating lymphocytes was comparable between the two cohorts (60% vs. 62%). QNBC tumors were significantly more likely to express proteins of cKIT (26% vs. 15%, p=0.01), EGFR (69% vs. 56%, p=0.03), TS (49% vs. 33%, p<0.0001) and TOPO2A (85% vs. 65%, p<0.0001) compared to AR+TNBC. TLE3 expression was significantly higher in AR+TNBC cohorts (48% vs. 32%, p<0.0001). Sequencing reveals that QNBC tumors carried significantly higher mutation rate of TP53 (71% vs. 55%, p<0.0001) while AR+TNBC tumors showed significantly higher mutation rates of PIK3CA (42% vs. 12%, p<0.0001), AKT1 (13% vs. 1%, p<0.0001) as well as ERBB2 (5% vs. 1%, p=0.0003).
Conclusion:
Biomarker comparisons between two molecular subgroups of the TNBC tumors confirm the molecular heterogeneity of this aggressive type of breast cancer. Our biomarker results suggests that for AR+TNBC tumors, future clinical trial design can consider fluoropyrimidines, taxanes, and agents targeting PI3K/AKT/mTOR pathway as well as pan-HER inhibitors, and those agents may be combined with anti-androgen therapies. On the other hand, clinical trials for immune checkpoint inhibitors, TOP2A inhibitors, as well as agents that target cKIT and EGFR should be considered for QNBC tumors. Our findings highlight the molecular differences that should be considered in the design of future clinical trial strategies, warranting further investigation for improving targeted therapy and outcomes in TNBC.
Citation Format: Xiu J, Obeid E, Gatalica Z, Reddy S, Goldstein LJ, Link J, Waisman J. Biomarker comparison between androgen receptor – Positive-triple-negative breast cancer (AR+ TNBC) and quadruple-negative breast cancer (QNBC). [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 P3-07-26.
Collapse
|
109
|
Xiu J, Gatalica Z, Reddy S, Waisman J, Link J. Abstract P3-07-27: Distinct biomarker features in triple-negative breast cancer metastases to the brain, liver and bone. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p3-07-27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Triple-negative breast cancer (TNBC) is characterized by its aggressive nature and accounts for a disproportionate number of metastatic disease cases and breast cancer-related deaths. Despite recent improvements, TNBC patients who develop metastatic diseases have limited treatment options. We investigated biomarkers from brain, liver and bone metastases collected from TNBC patients to identify therapeutic options and to examine molecular differences between the metastatic sites.
Method: Triple-negative breast cancer tumors referred to Caris Life Sciences (Phoenix, AZ) between 2009 and 2015 were tested with a combination of immunohistochemistry, fluorescent/chromogenic in-situ hybridization and sequencing (Next-generation and Sanger).
Result: 1570 TNBC tumors were analyzed, including 1297 tumors taken from breast, 54 from brain, 172 from liver and 47 from bone. Select biomarker frequencies of protein overexpression (IHC), gene amplification (ISH) and mutations (SEQ) are summarized in Table 1. Brain metastases showed the highest protein expression of TOPO2A and PDL1; liver metastases showed the highest expression of AR and SPARC, as well as the highest mutation rate of PIK3CA. Bone metastases showed the lowest expression of TS, RRM1 and ERCC1. BRCA1 and BRCA2 mutation rates ranged from 0-11% in various specimen sites.
Table 1Biomarker and MethodBreast Metastases (%)Brain Metastases (%)Liver Metastases (%)Bone Metastases (%)p value[pound]TOP2A IHC76100[sect]7339<0.0001PDL1 IHC1540[sect]8170.03AR IHC151036[sect]260.0005SPARC IHC173040[sect]150.0027PIK3CA SEQ165.329[sect]250.036TS IHC[dagger]49542415[sect]<0.0001RRM1 IHC[dagger]39433216[sect]0.006ERCC1 IHC[dagger]35554816[sect]0.002BRCA1 SEQ708n/ansBRCA2 SEQ11114n/ans[sect]:the group with the highest frequency of actionable results; [pound]:p values are calculated from comparing the group with the highest frequency with the lowest frequency using two tailed Fisher-Exact test, further detailed statistical analysis will be presented;[dagger]:low levels predict response to associated drugs; Ns: non-significant, i.e., p >0.05; n/a: data not available due to low N
Conclusion: Distinct biomarker features identified in different metastatic sites in TNBC present the rationale to investigate differential treatment strategies. Based on biomarker results, etoposide, immune-modulatory agents may seem promising for brain metastases; anti-androgen therapies and nab-paclitaxel may be promising in treating liver metastases; while fluoropyrimidines, gemcitabine and platinum may be considered for TNBC patients with bone metastases.
Citation Format: Xiu J, Gatalica Z, Reddy S, Waisman J, Link J. Distinct biomarker features in triple-negative breast cancer metastases to the brain, liver and bone. [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 P3-07-27.
Collapse
|
110
|
Gatalica Z, Joneja U, Ghazalpour A, Swensen J, Feldman R, Cai F, Chen W, Xiao N, Reddy S, Palazzo J. Abstract P3-07-47: Comprehensive profiling of metaplastic breast carcinoma reveals frequent over-expression of PD-L1. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p3-07-47] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Metaplastic breast carcinoma (MBC) is a rare subtype of breast carcinoma less responsive to conventional chemotherapy relative to usual breast carcinomas (UBCs) such as ductal and lobular subtype. In molecular terms MBC usually clusters with triple negative breast cancer (TNBC), but MBCs portray a worse prognosis in comparison to TNBCs. Published studies investigating MBCs for specific biomarkers of therapy response are rare and limited by the methodological approaches.
Methods: This study included 132 patients with 38 histologically confirmed MBCs and 94 UBCs. Amongst the 94 UBCSs, 44 were estrogen receptor positive, 33 were triple negative and 17 were HER2 positive. Direct sequencing analysis was performed on genomic DNA isolated from formalin-fixed paraffin-embedded tissue (FFPE) using the Illumina MiSeq Next Generation Sequencing platform (NGS). Immunohistochemistry for PD-L1 (SP142, Spring Bioscience), PD-1 (NAT105, Ventana) and EGFR (31G7, Life Technologies) was performed using automated procedures. Additionally, mutation analysis for EGFRvIII was performed on RNA extracted from FFPE tissue.
Results: At the genomic level, numerous cases of MBC had multiple genomic alterations with the most frequent genetic mutation in TP53 gene (14/24), similar to the TNBC controls (17/33). BRCA1 mutations were detected in 2/10 cases. Potentially actionable mutations were rare and included PIK3CA gene. Importantly, PD-L1 expression on cancer cells was detected in significantly higher proportion of MBCs (37%) than in the UBC cohort (6%) or TNBC control (14%) (p=3.7x10-5 and p=0.03, respectively). PD-1 positive tumors infiltrating lymphocytes (TILS) varied greatly in MBC (0 to >50/mm2). Over-expression of EGFR was frequent in MBCs (62%); however no mutations in the gene including EGFRvIII were detected.
Conclusion: Comprehensive profiling of a large cohort of this rare carcinoma highlighted predominance of TP53 mutations, wild type EGFR gene expression, a distinct increase in proportion of PD-L1 expression in carcinoma cells, and PD-1 expression in TILS. The latter properties can be exploited in clinical trials utilizing immune check point inhibitors.
Citation Format: Gatalica Z, Joneja U, Ghazalpour A, Swensen J, Feldman R, Cai F, Chen W, Xiao N, Reddy S, Palazzo J. Comprehensive profiling of metaplastic breast carcinoma reveals frequent over-expression of PD-L1. [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 P3-07-47.
Collapse
|
111
|
Balamaddaiah G, Reddy S. Prevalence and risk factors of inguinal hernia: a study in a semi-urban area in Rayalaseema, Andhra Pradesh, India. ACTA ACUST UNITED AC 2016. [DOI: 10.18203/2349-2902.isj20162208] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
112
|
Dunseth C, Collins L, Reddy S, Schlueter AJ. Use of a simple, inexpensive device for collection of blood during acute normovolaemic haemodilution in a Jehovah's Witness patient. Vox Sang 2015; 110:202-5. [DOI: 10.1111/vox.12350] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 08/19/2015] [Accepted: 09/01/2015] [Indexed: 11/30/2022]
|
113
|
Xiu J, Gatalica Z, Abbott B, Reddy S, Vanderwalde A, Braiteh F. 215 Using ALK IHC test to identify potential responders to ALK inhibitors outside of NSCLC. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30103-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
114
|
Nho SW, Abdelhamed H, Reddy S, Karsi A, Lawrence ML. Identification of high-risk Listeria monocytogenes serotypes in lineage I (serotype 1/2a, 1/2c, 3a and 3c) using multiplex PCR. J Appl Microbiol 2015; 119:845-52. [PMID: 26095922 DOI: 10.1111/jam.12876] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 05/21/2015] [Accepted: 06/04/2015] [Indexed: 01/08/2023]
Abstract
AIMS Using molecular subtyping techniques, Listeria monocytogenes is divided into three major phylogenetic lineages, and a multiplex PCR method can differentiate five L. monocytogenes subgroups: 1/2a-3a, 1/2c-3c, 1/2b-3b-7, 4b-4d-4e and 4a-4c. In this study, we conducted genome comparisons and evaluated serotype-associated genes for their utility as a multiplex PCR-based method for distinguishing high-risk serotypes 1/2a and 1/2c in lineage I from low-risk serotypes 3a and 3c. METHODS AND RESULTS Primer sets were developed that are specific for serotype 1/2c (LMOSLCC2372_0308) and serotype 3a (LMLG_0742). These primers were then tested in a multiplex format with primers specific for serotype 1/2a (flaA) to separate serotypes 1/2a, 1/2c, 3a and 3c using 25 strains of lineage I L. monocytogenes. CONCLUSIONS Here, for the first time, we report primers specific for L. monocytogenes serotype 1/2c and serotype 3a, and we demonstrate a multiplex PCR method for separating the four serotypes of lineage I L. monocytogenes. SIGNIFICANCE AND IMPACT OF THE STUDY The described multiplex PCR assay consistently showed successful separation of 1/2a and 1/2c strains from 3a and 3c strains. PCR is routinely performed in many diagnostic and epidemiologic investigations for L. monocytogenes, and these primers should increase the feasibility and accessibility of L. monocytogenes serotyping.
Collapse
|
115
|
Firestone KS, Fisher S, Reddy S, White DB, Stein HM. Effect of changing NAVA levels on peak inspiratory pressures and electrical activity of the diaphragm in premature neonates. J Perinatol 2015; 35:612-6. [PMID: 25764328 DOI: 10.1038/jp.2015.14] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Revised: 01/02/2015] [Accepted: 02/02/2015] [Indexed: 11/09/2022]
Abstract
BACKGROUND Neurally adjusted ventilator assist (NAVA) uses electrical activity of the diaphragm (Edi) to provide patient-directed ventilatory support. The NAVA level determines the proportional amount of ventilatory support. Systematically increasing NAVA level initially increases peak inspiratory pressure (PIP) while maintaining a constant Edi until a breakpoint (BrP) is reached. Further increases in NAVA level reduce the Edi, while the PIP plateaus. This study was performed to establish whether premature neonates have intact neural feedback systems allowing them to have a BrP. METHOD NAVA level was increased by 0.5 cm H2O μV(-1) every 3 min from 0.5 to 4.0 cm H2O μV(-1). PIP, Edi, mean blood pressure, heart rate, respiratory rate, oxygen saturation and FIO2 were recorded. Statistics: Non-linear regression was done for PIP and Edi. Linear regression was done for the other variables. The data from the trials were combined by normalizing to NAVA levels above and below the BrP. RESULT Nine neonates were studied on NAVA and 12 on non-invasive NAVA. PIP increased until the BrP was reached and then remained unchanged. Edi decreased after the BrP was reached. All other variables remained unchanged. CONCLUSION Neonates demonstrated a BrP suggesting intact neural feedback mechanisms that may protect lungs from over distention with NAVA ventilation.
Collapse
|
116
|
Reddy S, Sanders TA, Obeid O. The influence of maternal vegetarian diet on essential fatty acid status of the newborn. World Rev Nutr Diet 2015; 75:102-4. [PMID: 7871808 DOI: 10.1159/000423559] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|
117
|
Radha S, Afroz T, Prasad CR, Sridhar G, Rajaram KG, Reddy S. Focal segmental glomerulosclerosis in renal allografts: Is it possible to diagnose the etiology? Indian J Nephrol 2015; 25:82-5. [PMID: 25838644 PMCID: PMC4379630 DOI: 10.4103/0971-4065.137173] [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: 12/01/2022] Open
Abstract
Recurrence of FSGS in renal allo grafts is a major cause of graft loss. In this context, we tried to diagnose and classify FSGS in renal allografts. Indications for biopsy included graft dysfunction and/or proteinuria. Three hundred and sixty-three graft biopsies were studied over a period of 2 years. We classified FSGS into recurrent FSGS, new-onset primary FSGS and FSGS secondary to chronic humoral rejection, calcineurin inhibitor toxicity, and nephron loss and hyperfiltration injury. Twenty-four cases were diagnosed as FSGS, constituting 6.6%. Secondary FSGS was the most common FSGS in grafts in our study. Incidence of recurrent FSGS may not be accurate as pretransplant biopsy is available in very few cases.
Collapse
|
118
|
Egan T, Blackwell J, Gazda S, Forrest L, Haithcock B, Long J, Birchard K, Reddy S, Casey N. Assessment of Human Lungs Recovered From Uncontrolled Donation After Circulatory Determination of Death (uDCDD) Donors By Ex-Vivo Lung Perfusion (EVLP) and CT Scan. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.687] [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] Open
|
119
|
Egan T, Dong B, Blackwell J, Birchard K, Stewart P, Funkhouser W, Simmons W, Jernigan E, Venkataraman A, Reddy S, Haithcock B. Assessing Human Lungs Unsuitable for Transplant By Ex-Vivo Lung Perfusion (EVLP) and Ex-Vivo CT Scan: Does EVLP Cause Inflammation? J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
120
|
Nisam S, Reddy S. The story of ... a lead. Europace 2015; 17:677-88. [DOI: 10.1093/europace/euu391] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 12/03/2014] [Indexed: 11/13/2022] Open
|
121
|
Dharmarajan T, Dharmarajan T, Reddy S, Daniel A, Suwandhi P. Hyperactive Delirium from a Distended Urinary Bladder and Retention: Delayed Diagnosis and Needless Medications May Beget More Adverse Events and Institutionalization. J Am Med Dir Assoc 2015. [DOI: 10.1016/j.jamda.2015.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
122
|
Sarangapani R, Ramavat V, Reddy S, Subramanian P, Sikder A. Rheology studies of NTO–TNT based melt-cast dispersions and influence of particle–dispersant interactions. POWDER TECHNOL 2015. [DOI: 10.1016/j.powtec.2014.12.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
123
|
Frilling A, Giele H, Vrakas G, Reddy S, Macedo R, Al-Nahhas A, Wasan H, Clift AK, Gondolesi GE, Vianna RM, Friend P, Vaidya A. Modified liver-free multivisceral transplantation for a metastatic small bowel neuroendocrine tumor: a case report. Transplant Proc 2015; 47:858-62. [PMID: 25689880 DOI: 10.1016/j.transproceed.2015.01.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 01/14/2015] [Indexed: 12/17/2022]
Abstract
Neuroendocrine tumors originating from the small bowel frequently metastasize to the lymph nodes and/or liver. Although surgical extirpation of the primary tumor and locoregional metastases epitomizes the management of patients with such tumors, this is not always possible with conventional surgical techniques. Nonresectable, slow-growing tumors involving the mesenteric root represent a generally accepted indication for deceased donor intestinal and multivisceral transplantation. Furthermore, vascularized sentinel forearm flaps offer opportunities for monitoring graft rejection and tailoring immunosuppression regimens. Here, we report the first documented case of modified liver-free multivisceral transplantation preceded by neoadjuvant 177-lutetium peptide receptor radionuclide therapy in a patient with a small bowel neuroendocrine tumor and extensive lymph node metastases in the mesenterium. At a follow-up of 21 months the patient is biochemically and radiologically disease-free.
Collapse
|
124
|
Oliveira Jr. MT, Canesin MF, Marcolino MS, Ribeiro AL, Carvalho AC, Reddy S, Santos ARF, Fernandes MAS, Amaral AZ, Rezende AC, Nechar Jr. A, Nascimento BR, Carlos Alberto Pastore CA, Wen CL, Gualandro DM, Napoli DG, França FFAC, Feitosa-Filho GS, Saad JA, Pilli J, Paula LJC, Junqueira LL, Cesar LAM, Bodanese LC, Gutierrez MA, Alkmim MBM, Nunes MB, Medeiros OO, Moreno RA, Gundim RS, Montenegro ST, Nazima WI. Diretriz de Telecardiologia no Cuidado de Pacientes com Síndrome Coronariana Aguda e Outras Doenças Cardíacas. Arq Bras Cardiol 2015; 104:1-26. [DOI: 10.5935/abc.20150057] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
125
|
Borad MJ, Reddy S, Uronis H, Sigal DS, Cohn AL, Schelman WR, Stephenson J, Chiorean EG, Rosen PJ, Ulrich B, Dragovich T, Prete SD, Rarick M, Eng C, Kroll S, Ryan D. Abstract LB-121: Randomized phase II study of the efficacy and safety of gemcitabine + TH-302 (G+T) vs gemcitabine (G) alone in previously untreated patients with advanced pancreatic cancer. Clin Trials 2014. [DOI: 10.1158/1538-7445.am2012-lb-121] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|