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Kropp L, Jackson-Thompson B, Thomas LM, McDaniel D, Mitre E. Chronic infection with a tissue-invasive helminth attenuates sublethal anaphylaxis and reduces granularity and number of mast cells. Clin Exp Allergy 2020; 50:213-221. [PMID: 31834940 DOI: 10.1111/cea.13549] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 02/28/2019] [Revised: 11/26/2019] [Accepted: 12/04/2019] [Indexed: 01/18/2023]
Abstract
BACKGROUND Immunoglobulin E (IgE)-mediated anaphylaxis is a potentially fatal condition in which allergy effector cells rapidly discharge pre-formed inflammatory mediators. Treatments that address the immune component of allergic anaphylaxis are inadequate. Helminths have been previously shown to suppress effector cell function; however, their ability to treat pre-existing allergy remains unclear. OBJECTIVE To evaluate the ability of chronic helminth infection to protect against anaphylaxis in previously sensitized mice. METHODS A sublethal model of anaphylaxis was used, in which BALB/c mice were sensitized by three intraperitoneal (i.p.) injections of OVA/alum. Temperature drop was then monitored after systemic OVA challenge in uninfected mice and in mice infected chronically with Litomosoides sigmodontis, a tissue-invasive filarial nematode. RESULTS Litomosoides sigmodontis-infected mice exhibited significantly lower serum levels of mMCP-1 and were less hypothermic at 30-minute post-challenge compared to uninfected OVA-challenged controls. Characterization of anaphylaxis revealed that FcԑR1 and mast cells were required for hypothermia and elevated serum mMCP-1. OVA-IgE and OVA-IgG1 serum levels were not significantly altered by L sigmodontis infection, and experiments with IL-10-/- mice demonstrated that IL-10 was not required for protection against anaphylaxis. However, peritoneal mast cell numbers were significantly lower in infected mice, and those that were present exhibited decreased granularity by flow cytometry and marked depletion of intracytoplasmic granules by light microscopy. Mast cells from infected mice had lower expression of the activation markers CD200R and CD63 and contained significantly lower basal stores of histamine. CONCLUSIONS Chronic L sigmodontis infection protects against anaphylaxis, likely due to reduction in mast cell numbers and depletion of pre-formed inflammatory mediators in remaining mast cells.
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Affiliation(s)
- Laura Kropp
- Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Belinda Jackson-Thompson
- Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Louis Michael Thomas
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Dennis McDaniel
- Biomedical Instrumentation Center, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Edward Mitre
- Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
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2
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Geller A, Baciu A, Yang S, Abudayyeh H, Ahmed J, Ali K, Chou J, David J, Edmier A, Hanfi H, Harvey M, Hayes M, Hong C, Hyman B, Ismail M, Ives A, Kofman D, Kropp L, Kutscher E, Safi Z, Sell C, Stenson H, Szeto E, Veera S, Wertin K, White JM, Whittaker L. Third Annual DC Public Health Case Challenge: Supporting Mental Health in Older Veterans. NAM Perspect 2017. [DOI: 10.31478/201710d] [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: 11/23/2022]
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3
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Kropp L, De Los Santos J, Li P, McKee S, Conry R. Treatment of Advanced Melanoma With Concurrent Radiation and Programmed Cell Death 1 Inhibitors. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.2416] [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]
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4
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Kropp L, Dagan R, Morris CG, Bryant C, Werning JW, Dziegielewski P, Mendenhall WM, Amdur RJ. Postoperative Radiotherapy for High-risk Laryngeal or Hypopharyngeal Squamous Cell Carcinoma. Hong Kong J Radiol 2017. [DOI: 10.12809/hkjr1715373] [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
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Kropp L, De Los Santos J, Conry R. Advanced Melanoma Treated With Radiation Therapy After Limited Progression Following Ipilimumab. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.2420] [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: 10/20/2022]
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6
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Kropp L, Oto A, Dess R, Liauw S. Endorectal MRI in the Initial Assessment of Prostate Cancer: Radiographic Findings and Impact on Radiotherapeutic Treatment Decisions. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1164] [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: 11/24/2022]
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7
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Giorgio E, Rolyan H, Kropp L, Chakka AB, Yatsenko S, Gregorio ED, Lacerenza D, Vaula G, Talarico F, Mandich P, Toro C, Pierre EE, Labauge P, Capellari S, Cortelli P, Vairo FP, Miguel D, Stubbolo D, Marques LC, Gahl W, Boespflug-Tanguy O, Melberg A, Hassin-Baer S, Cohen OS, Pjontek R, Grau A, Klopstock T, Fogel B, Meijer I, Rouleau G, Bouchard JPL, Ganapathiraju M, Vanderver A, Dahl N, Hobson G, Brusco A, Brussino A, Padiath QS. Analysis ofLMNB1Duplications in Autosomal Dominant Leukodystrophy Provides Insights into Duplication Mechanisms and Allele-Specific Expression. Hum Mutat 2013. [DOI: 10.1002/humu.22466] [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: 11/11/2022]
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Giorgio E, Rolyan H, Kropp L, Chakka AB, Yatsenko S, Gregorio ED, Lacerenza D, Vaula G, Talarico F, Mandich P, Toro C, Pierre EE, Labauge P, Capellari S, Cortelli P, Vairo FP, Miguel D, Stubbolo D, Marques LC, Gahl W, Boespflug-Tanguy O, Melberg A, Hassin-Baer S, Cohen OS, Pjontek R, Grau A, Klopstock T, Fogel B, Meijer I, Rouleau G, Bouchard JPL, Ganapathiraju M, Vanderver A, Dahl N, Hobson G, Brusco A, Brussino A, Padiath QS. Analysis of LMNB1 duplications in autosomal dominant leukodystrophy provides insights into duplication mechanisms and allele-specific expression. Hum Mutat 2013; 34:1160-71. [PMID: 23649844 PMCID: PMC3714349 DOI: 10.1002/humu.22348] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Accepted: 04/19/2013] [Indexed: 02/05/2023]
Abstract
Autosomal dominant leukodystrophy (ADLD) is an adult onset demyelinating disorder that is caused by duplications of the lamin B1 (LMNB1) gene. However, as only a few cases have been analyzed in detail, the mechanisms underlying LMNB1 duplications are unclear. We report the detailed molecular analysis of the largest collection of ADLD families studied, to date. We have identified the minimal duplicated region necessary for the disease, defined all the duplication junctions at the nucleotide level and identified the first inverted LMNB1 duplication. We have demonstrated that the duplications are not recurrent; patients with identical duplications share the same haplotype, likely inherited from a common founder and that the duplications originated from intrachromosomal events. The duplication junction sequences indicated that nonhomologous end joining or replication-based mechanisms such fork stalling and template switching or microhomology-mediated break induced repair are likely to be involved. LMNB1 expression was increased in patients' fibroblasts both at mRNA and protein levels and the three LMNB1 alleles in ADLD patients show equal expression, suggesting that regulatory regions are maintained within the rearranged segment. These results have allowed us to elucidate duplication mechanisms and provide insights into allele-specific LMNB1 expression levels.
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Affiliation(s)
- Elisa Giorgio
- University of Torino, Department of Medical SciencesTorino, Italy
| | - Harshvardhan Rolyan
- Department of Human Genetics Graduate School of Public Health, University of PittsburghPittsburgh, Pennsylvania
| | - Laura Kropp
- Department of Human Genetics Graduate School of Public Health, University of PittsburghPittsburgh, Pennsylvania
| | - Anish Baswanth Chakka
- Department of Biomedical Informatics School of Medicine, University of PittsburghPittsburgh, Pennsylvania
| | - Svetlana Yatsenko
- Department of Obstetrics Gynecology and Reproductive Sciences, University of PittsburghPittsburgh, Pennsylvania
- Department of Pathology University of Pittsburgh, School of MedicinePittsburgh, Pennsylvania
| | - Eleonora Di Gregorio
- University of Torino, Department of Medical SciencesTorino, Italy
- S.C.D.U. Medical Genetics, Az. Osp. Città della Salute e della ScienzaTorino, Italy
| | | | - Giovanna Vaula
- Department of Neuroscience, Az. Osp. Città della Salute e della ScienzaTorino, Italy
| | - Flavia Talarico
- S.C.D.U. Medical Genetics, Az. Osp. Città della Salute e della ScienzaTorino, Italy
| | - Paola Mandich
- Department of Neurology, Ophthalmology and Genetics, di Bologna, Department of Biomedical and NeuroMotor Sciences (DIBINEM) Alma Mater StudiorumBologna, Italy
| | - Camilo Toro
- NIH Undiagnosed Diseases Program NIH Office of Rare Disease, Research and NHGRIBethesda, Maryland
| | | | - Pierre Labauge
- Neurologie Hopital Caremeau, Centre Hospitalo-Universitaire de NimesNimes, France
| | - Sabina Capellari
- University of Bologna IRCCS Istituto delle Scienze Neurologiche di Bologna Department of Biomedical and NeuroMotor Sciences (DIBINEM), Alma Mater StudiorumItaly
| | - Pietro Cortelli
- University of Bologna IRCCS Istituto delle Scienze Neurologiche di Bologna Department of Biomedical and NeuroMotor Sciences (DIBINEM), Alma Mater StudiorumItaly
| | - Filippo Pinto Vairo
- Hospital de Clínicas de Porto Alegre … Universidade Federal do Rio Grande do SulPorto Alegre, Brazil
| | - Diego Miguel
- Hospital de Clínicas de Porto Alegre … Universidade Federal do Rio Grande do SulPorto Alegre, Brazil
| | - Danielle Stubbolo
- Nemours Biomedical Research, Alfred I. duPont Hospital for ChildrenWilmington, Delaware
| | - Lourenco Charles Marques
- Department of Medical Genetics Clinics Hospital of Ribeirao Preto, University of Sao PauloSao Paulo, Brazil
| | - William Gahl
- NIH Undiagnosed Diseases Program NIH Office of Rare Disease, Research and NHGRIBethesda, Maryland
| | - Odile Boespflug-Tanguy
- Institut National de la Santé et de la Recherche Médicale (INSERM) – Paris Diderot Sorbonne Paris Cité University, Robert Debré HospitalParis, France
- Assistance Publique des Hopitaux de Paris Reference Center for Rare Diseases “Leukodystrophies”, Child Neurology and Metabolic Disorders DepartmentParis, France
| | - Atle Melberg
- Department of Neuroscience Neurology, Uppsala UniversityUppsala, Sweden
| | - Sharon Hassin-Baer
- Parkinson’s disease and Movement Disorders Clinic Department of Neurology, Chaim Sheba Medical CenterTel Aviv, Israel
- Sackler Faculty of Medicine, Tel Aviv UniversityTel Aviv, Israel
| | - Oren S Cohen
- Parkinson’s disease and Movement Disorders Clinic Department of Neurology, Chaim Sheba Medical CenterTel Aviv, Israel
- Sackler Faculty of Medicine, Tel Aviv UniversityTel Aviv, Israel
| | - Rastislav Pjontek
- Department of Neurology, University of HeidelbergHeidelberg, Germany
| | - Armin Grau
- Dept. of Neurology, Klinikum LudwigshafenLudwigshafen, Germany
| | - Thomas Klopstock
- Dept. of Neurology Friedrich-Baur-Institute, Ludwig-Maximilians-UniversityMunich, Germany
- German Center for Vertigo and Balance DisordersMunich, Germany
- DZNE – German Center for Neurodegenerative DiseasesMunich, Germany
- German Network for Mitochondrial Disorders(mitoNET), Germany
| | - Brent Fogel
- Department of Neurology David Geffen School of Medicine, University of CaliforniaLos Angeles, California
| | - Inge Meijer
- Montreal Neurological Institute, McGill UniversityMontreal, Canada
| | - Guy Rouleau
- Montreal Neurological Institute, McGill UniversityMontreal, Canada
| | | | - Madhavi Ganapathiraju
- Department of Biomedical Informatics School of Medicine, University of PittsburghPittsburgh, Pennsylvania
| | - Adeline Vanderver
- Department of Neurology, Childrens National Medical CenterWashington, District of Columbia
| | - Niklas Dahl
- Dept. of Immunology Genetics and Pathology Section of Clinical Genetics The Rudbeck laboratory, Uppsala University Children’s HospitalUppsala, Sweden
| | - Grace Hobson
- Nemours Biomedical Research, Alfred I. duPont Hospital for ChildrenWilmington, Delaware
- University of Delaware, Department of BiologyNewark, Delaware
- Thomas Jefferson University, Jefferson Medical CollegePhiladelphia, Pennsylvania
| | - Alfredo Brusco
- University of Torino, Department of Medical SciencesTorino, Italy
- S.C.D.U. Medical Genetics, Az. Osp. Città della Salute e della ScienzaTorino, Italy
| | | | - Quasar Saleem Padiath
- Department of Human Genetics Graduate School of Public Health, University of PittsburghPittsburgh, Pennsylvania
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Kropp L, Balamucki C, Morris C, Mendenhall W. Incidental Perineural Invasion in Cutaneous Carcinoma of the Head and Neck: Experience With Postoperative Radiation Therapy After Mohs Resection. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1384] [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: 11/27/2022]
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10
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Kropp L, Garg M, Binder R. Ovalbumin-derived precursor peptides are transferred sequentially from gp96 and calreticulin to MHC I in the endoplasmic reticulum (130.26). The Journal of Immunology 2010. [DOI: 10.4049/jimmunol.184.supp.130.26] [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] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
Cellular peptides generated by proteasomal degradation of proteins in the cytosol and destined for presentation by MHC I are associated with several chaperones. Hsp70, hsp90, and the TCP1-ring complex have been implicated as important cytosolic players for chaperoning these peptides. In this study we report that gp96 and calreticulin are essential for chaperoning peptides in the endoplasmic reticulum. Importantly we demonstrate that cellular peptides are transferred sequentially from gp96 to calreticulin and then to MHC I forming a relay line. Disruption of this relay line by removal of gp96 or calreticulin prevents the binding of peptides by MHC I and hence presentation of the MHC 1-peptide complex on the cell surface. Our results are important for understanding how peptides are processed and trafficked within the endoplasmic reticulum before exiting in association with MHC I heavy chains and beta2-microglobulin as a trimolecular complex.
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11
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Shen K, Sayeed S, Antalis P, Gladitz J, Ahmed A, Dice B, Janto B, Dopico R, Keefe R, Hayes J, Johnson S, Yu S, Ehrlich N, Jocz J, Kropp L, Wong R, Wadowsky RM, Slifkin M, Preston RA, Erdos G, Post JC, Ehrlich GD, Hu FZ. Extensive genomic plasticity in Pseudomonas aeruginosa revealed by identification and distribution studies of novel genes among clinical isolates. Infect Immun 2006; 74:5272-83. [PMID: 16926421 PMCID: PMC1594838 DOI: 10.1128/iai.00546-06] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The distributed genome hypothesis (DGH) states that each strain within a bacterial species receives a unique distribution of genes from a population-based supragenome that is many times larger than the genome of any given strain. The observations that natural infecting populations are often polyclonal and that most chronic bacterial pathogens have highly developed mechanisms for horizontal gene transfer suggested the DGH and provided the means and the mechanisms to explain how chronic infections persist in the face of a mammalian host's adaptive defense mechanisms. Having previously established the validity of the DGH for obligate pathogens, we wished to evaluate its applicability to an opportunistic bacterial pathogen. This was accomplished by construction and analysis of a highly redundant pooled genomic library containing approximately 216,000 functional clones that was constructed from 12 low-passage clinical isolates of Pseudomonas aeruginosa, 6 otorrheic isolates and 6 from other body sites. Sequence analysis of 3,214 randomly picked clones (mean insert size, approximately 1.4 kb) from this library demonstrated that 348 (10.8%) of the clones were unique with respect to all genomic sequences of the P. aeruginosa prototype strain, PAO1. Hypothetical translations of the open reading frames within these unique sequences demonstrated protein homologies to a number of bacterial virulence factors and other proteins not previously identified in P. aeruginosa. PCR and reverse transcription-PCR-based assays were performed to analyze the distribution and expression patterns of a 70-open reading frame subset of these sequences among 11 of the clinical strains. These sequences were unevenly distributed among the clinical isolates, with nearly half (34/70) of the novel sequences being present in only one or two of the individual strains. Expression profiling revealed that a vast majority of these sequences are expressed, strongly suggesting they encode functional proteins.
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Affiliation(s)
- Kai Shen
- Center for Genomic Sciences, Allegheny-Singer Research Institute, Allegheny General Hospital, 320 East North Ave., 11th Floor South Tower, Pittsburgh, PA 15212, USA
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12
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Shen K, Gladitz J, Antalis P, Dice B, Janto B, Keefe R, Hayes J, Ahmed A, Dopico R, Ehrlich N, Jocz J, Kropp L, Yu S, Nistico L, Greenberg DP, Barbadora K, Preston RA, Post JC, Ehrlich GD, Hu FZ. Characterization, distribution, and expression of novel genes among eight clinical isolates of Streptococcus pneumoniae. Infect Immun 2006; 74:321-30. [PMID: 16368987 PMCID: PMC1346598 DOI: 10.1128/iai.74.1.321-330.2006] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Eight low-passage-number Streptococcus pneumoniae clinical isolates, each of a different serotype and a different multilocus sequence type, were obtained from pediatric participants in a pneumococcal vaccine trial. Comparative genomic analyses were performed with these strains and two S. pneumoniae reference strains. Individual genomic libraries were constructed for each of the eight clinical isolates, with an average insert size of approximately 1 kb. A total of 73,728 clones were picked for arraying, providing more than four times genomic coverage per strain. A subset of 4,793 clones were sequenced, for which homology searches revealed that 750 (15.6%) of the sequences were unique with respect to the TIGR4 reference genome and 263 (5.5%) clones were unrelated to any available streptococcal sequence. Hypothetical translations of the open reading frames identified within these novel sequences showed homologies to a variety of proteins, including bacterial virulence factors not previously identified in S. pneumoniae. The distribution and expression patterns of 58 of these novel sequences among the eight clinical isolates were analyzed by PCR- and reverse transcriptase PCR-based analyses, respectively. These unique sequences were nonuniformly distributed among the eight isolates, and transcription of these genes in planktonic cultures was detected in 81% (172/212) of their genic occurrences. All 58 novel sequences were transcribed in one or more of the clinical strains, suggesting that they all correspond to functional genes. Sixty-five percent (38/58) of these sequences were found in 50% or less of the clinical strains, indicating a significant degree of genomic plasticity among natural isolates.
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Affiliation(s)
- Kai Shen
- Center for Genomic Sciences, Allegheny-Singer Research Institute, Allegheny General Hospital, 320 East North Avenue, 11th Floor South Tower, Pittsburgh, PA 15212, USA
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