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Newallo D, Perricone AJ, Martinez AP, Hussain D, Muzahir S. Rare presentation of inflammatory pseudotumour involving subcutaneous tissues with superficial fat sparing. BJR Case Rep 2020; 7:20200154. [PMID: 33841908 PMCID: PMC8008462 DOI: 10.1259/bjrcr.20200154] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/10/2020] [Accepted: 11/11/2020] [Indexed: 11/13/2022] Open
Abstract
We present a unique case of inflammatory pseudotumour involving gluteal subcutaneous tissue with the sparing of superficial fat and report its contrast-enhanced CT, F-18 fluorodeoxyglucose positron emission tomography/CT and pathological findings. Although rare, inflammatory pseudotumours have been reported with a diverse spectrum of locations; however, the involvement of the subcutaneous tissue overlying the gluteal muscles with sparing of the most superficial fat has not been reported.
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Affiliation(s)
- Domnique Newallo
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA, USA
| | - Adam J Perricone
- Department of Pathology & Laboratory Medicine, Emory University, Atlanta, GA, USA
| | - Anthony P Martinez
- Department of Pathology & Laboratory Medicine, Emory University, Atlanta, GA, USA
| | - Dania Hussain
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA, USA
| | - Saima Muzahir
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA, USA
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2
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Newman J, Brahmbhatt M, Stoff BK, Martinez AP. S-100 protein and SOX10-positive breast carcinoma mimicking metastatic melanoma. J Cutan Pathol 2020; 47:1187-1191. [PMID: 32710508 DOI: 10.1111/cup.13822] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 05/15/2020] [Revised: 07/19/2020] [Accepted: 07/21/2020] [Indexed: 11/28/2022]
Abstract
We present a case detailing a 70-year-old female with a history of triple-negative breast carcinoma (TNBC) of the left breast and contralateral stage pT2a nodular melanoma of the right upper arm who underwent sentinel lymph node biopsy of the right axilla demonstrating a metastatic epithelioid tumor that was strongly positive for S-100 protein and SOX10. The tumor cells were negative for HMB-45 and Melan-A and positive for CK7 and other breast markers (GCDFP15, mammaglobin, and GATA3). While concerning for metastatic melanoma based on clinical history and initial immunohistochemistry, tumor morphology and subsequent immunohistochemistry was supportive of metastatic breast adenocarcinoma. This case demonstrates a rare but perilous diagnostic pitfall of triple-negative breast carcinomas that strongly and diffusely express S-100 protein and SOX10 mimicking melanoma.
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Affiliation(s)
- John Newman
- Emory School of Medicine, Emory University, Atlanta, Georgia, USA
| | - Meera Brahmbhatt
- Department of Dermatology, Emory University, Atlanta, Georgia, USA
| | - Benjamin K Stoff
- Department of Dermatology, Emory University, Atlanta, Georgia, USA.,Department of Pathology and Laboratory Medicine, Emory University, Atlanta, Georgia, USA
| | - Anthony P Martinez
- Department of Dermatology, Emory University, Atlanta, Georgia, USA.,Department of Pathology and Laboratory Medicine, Emory University, Atlanta, Georgia, USA
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3
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Bourgeau M, Martinez AP. Correction to: Histiocyte-rich rhabdomyoblastic tumor: a report of two cases and a review of the differential diagnoses. Virchows Arch 2020; 477:763. [PMID: 32572554 DOI: 10.1007/s00428-020-02873-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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The given name of the co-author of the article mentioned above was incorrectly spelled. The correct name should have been "Melanie Bourgeau" instead of "Melanine Bourgeau." The original article has been corrected.
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Affiliation(s)
- Melanie Bourgeau
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA, 30322, USA
| | - Anthony P Martinez
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA, 30322, USA. .,Department of Dermatology, Emory University, Atlanta, GA, 30322, USA.
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Bourgeau M, Martinez AP. Histiocyte-rich rhabdomyoblastic tumor: a report of two cases and a review of the differential diagnoses. Virchows Arch 2020; 478:367-373. [PMID: 32514584 DOI: 10.1007/s00428-020-02857-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 04/29/2020] [Revised: 05/23/2020] [Accepted: 05/28/2020] [Indexed: 12/23/2022]
Abstract
Histiocyte-rich rhabdomyoblastic tumor is a recently described skeletal muscle neoplasm of uncertain malignant potential, characterized by slow growth, a fibrous capsule containing peripheral lymphoid aggregates, spindle-to-epithelioid cells with a rhabdomyoblastic immunophenotype, and a dense histiocytic infiltrate. It most commonly arises within the muscles of the lower legs and trunk in young-to-middle-aged men, and initial reports suggest indolent behavior. In this paper, we present two additional cases of histiocyte-rich rhabdomyoblastic tumor with similar clinicopathologic features and discuss the differential diagnosis including its overlap with inflammatory leiomyosarcoma.
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Affiliation(s)
- Melanie Bourgeau
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA, 30322, USA
| | - Anthony P Martinez
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA, 30322, USA. .,Department of Dermatology, Emory University, Atlanta, GA, 30322, USA.
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5
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Martinez AP, Fritchie KJ, Weiss SW, Agaimy A, Haller F, Huang HY, Lee S, Bahrami A, Folpe AL. Histiocyte-rich rhabdomyoblastic tumor: rhabdomyosarcoma, rhabdomyoma, or rhabdomyoblastic tumor of uncertain malignant potential? A histologically distinctive rhabdomyoblastic tumor in search of a place in the classification of skeletal muscle neoplasms. Mod Pathol 2019; 32:446-457. [PMID: 30287926 DOI: 10.1038/s41379-018-0145-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 08/23/2018] [Accepted: 08/23/2018] [Indexed: 12/21/2022]
Abstract
Skeletal muscle tumors are traditionally classified as rhabdomyoma or rhabdomyosarcoma. We have identified an unusual adult rhabdomyoblastic tumor not clearly corresponding to a previously described variant of rhabdomyoma or rhabdomyosarcoma, characterized by a very striking proliferation of non-neoplastic histiocytes, obscuring the underlying tumor. Ten cases were identified in nine males and one female with a median age of 43 years (range 23-69 years). Tumors involved the deep soft tissues of the trunk (N = 4), lower limbs (N = 4), and neck (N = 2). Tumors were well-circumscribed, nodular masses, frequently surrounded by a fibrous capsule containing lymphoid aggregates and sometimes calcifications. Numerous foamy macrophages, multinucleated Touton-type giant cells, and sheets/fascicles of smaller, often spindled macrophages largely obscured the underlying desmin, MyoD1, and myogenin-positive rhabdomyoblastic tumor. Cases were wild type for MYOD1 and no other mutations or rearrangements characteristic of a known subtype of rhabdomyoma or rhabdomyosarcoma were identified. Two of four cases successfully analyzed using a next-generation sequencing panel of 170 common cancer-related genes harbored inactivating NF1 mutations. Next-generation sequencing showed no gene fusions. Clinical follow (nine patients; median 9 months; mean 23 months; range 3-124 months) showed all patients received wide excision; four patients also received adjuvant radiotherapy and none received chemotherapy. At the time of last follow-up, all patients were alive and without disease; no local recurrences or distant metastases occurred. We hypothesize that these unusual tumors represent rhabdomyoblastic tumors of uncertain malignant potential. Possibly over time they should be relegated to a new category of skeletal muscle tumors of intermediate (borderline) malignancy.
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Affiliation(s)
- Anthony P Martinez
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA, 55902
| | - Karen J Fritchie
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA, 55902
| | - Sharon W Weiss
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA, USA, 30322
| | - Abbas Agaimy
- Institute of Pathology, Friedrich-Alexander University Erlangen-Nürnberg, University Hospital of Erlangen, 91054, Erlangen, Germany
| | - Florian Haller
- Institute of Pathology, Friedrich-Alexander University Erlangen-Nürnberg, University Hospital of Erlangen, 91054, Erlangen, Germany
| | - Hsuan-Ying Huang
- Department of Pathology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, 123, Ta-Pei Road, Niao-Sung District, Kaohsiung City, Taiwan
| | - Seungjae Lee
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Armita Bahrami
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Andrew L Folpe
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA, 55902.
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Raphael KL, Martinez AP, Clements SD, Isiadinso I. Role of Multimodal Cardiac Imaging in Diagnosing a Primary Intimal Sarcoma of the Left Atrial Appendage. Tex Heart Inst J 2019; 46:28-31. [PMID: 30833834 DOI: 10.14503/thij-16-5896] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Primary cardiac tumors are rare, and most are benign. Intimal sarcomas are among the rarest of the malignant cardiac tumors; they are aggressive and associated with a poor prognosis. Whereas transesophageal echocardiography has been instrumental in evaluating cardiac masses, other imaging methods, such as cardiac magnetic resonance, have proved invaluable in accurately characterizing these masses. We present the case of a 49-year-old woman in whom we diagnosed a primary intimal sarcoma of the left atrial appendage, and we discuss the importance of multimodal imaging in the evaluation and diagnosis of cardiac masses.
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Abstract
Recent work has revealed SMARCB1/INI1 loss by immunohistochemistry in a subset of epithelioid schwannomas and explored the significance of cytologic atypia and increased mitotic activity in these tumors. Additional studies have evaluated the utility and limitations of histone H3K27 trimethylation in diagnosis of high-grade and low-grade malignant peripheral nerve sheath tumors. New terminology regarding nerve sheath tumors in neurofibromatosis type 1 patients was proposed during a 2016 conference to better define guidelines for classification of this group of tumors. This review highlights novel findings and practical applications relating to these topics in peripheral nerve sheath tumors.
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Affiliation(s)
- Anthony P Martinez
- Department of Laboratory Medicine and Pathology, Mayo Clinic, 200 First Street Southwest, Rochester, MN 55905, USA
| | - Karen J Fritchie
- Department of Laboratory Medicine and Pathology, Mayo Clinic, 200 First Street Southwest, Rochester, MN 55905, USA.
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8
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Dashti NK, Wehrs RN, Thomas BC, Nair A, Davila J, Buckner JC, Martinez AP, Sukov WR, Halling KC, Howe BM, Folpe AL. Spindle cell rhabdomyosarcoma of bone with FUS-TFCP2 fusion: confirmation of a very recently described rhabdomyosarcoma subtype. Histopathology 2018; 73:514-520. [PMID: 29758589 DOI: 10.1111/his.13649] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [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: 04/04/2018] [Accepted: 05/08/2018] [Indexed: 12/22/2022]
Abstract
AIMS Rhabdomyosarcomas of bone are extremely rare, with fewer than 10 reported cases. A very rare subtype of spindle cell/sclerosing rhabdomyosarcoma harbouring a FUS-TFCP2 fusion and involving both soft tissue and bone locations has been reported very recently. We report only the fourth case of this unusual, clinically aggressive rhabdomyosarcoma. MATERIAL AND RESULTS A previously well 72-year-old male presented with a destructive lesion of the mandible. Morphological and immunohistochemical study of a needle biopsy and the subsequent resection showed a spindle cell rhabdomyosarcoma. RNA-seq, RT-PCR and FISH confirmed the presence of the FUS-TFCP2 fusion. CONCLUSIONS Spindle cell rhabdomyosarcomas carrying the FUS-TFCP2 fusion are very rare rhabdomyosarcoma variants with osseous predilection. The classification and differential diagnosis of this unusual molecular variant of spindle cell/sclerosing rhabdomyosarcoma are discussed.
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Affiliation(s)
- Nooshi K Dashti
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Rebecca N Wehrs
- Division of Laboratory Genetics and Genomics, Mayo Clinic, Rochester, MN, USA
| | - Brittany C Thomas
- Division of Laboratory Genetics and Genomics, Mayo Clinic, Rochester, MN, USA
| | - Asha Nair
- Division of Laboratory Genetics and Genomics, Mayo Clinic, Rochester, MN, USA
| | - Jaime Davila
- Division of Laboratory Genetics and Genomics, Mayo Clinic, Rochester, MN, USA
| | - Jan C Buckner
- Department of Medical Oncology, Mayo Clinic, Rochester, MN, USA
| | - Anthony P Martinez
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - William R Sukov
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Kevin C Halling
- Division of Laboratory Genetics and Genomics, Mayo Clinic, Rochester, MN, USA
| | | | - Andrew L Folpe
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
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9
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Martinez AP, Zou Y, Billings SD, Folpe AL. “Chondroblastoma-like” epithelioid fibrous histiocytoma: A previously undescribed and potentially confusing variant. J Cutan Pathol 2017; 45:99-103. [DOI: 10.1111/cup.13068] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 09/27/2017] [Accepted: 10/19/2017] [Indexed: 11/30/2022]
Affiliation(s)
- Anthony P. Martinez
- Department of Laboratory Medicine and Pathology; Mayo Clinic; Rochester Minnesota
| | - Youran Zou
- Department of Pathology; Cleveland Clinic Foundation; Cleveland Ohio
| | | | - Andrew L. Folpe
- Department of Laboratory Medicine and Pathology; Mayo Clinic; Rochester Minnesota
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10
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Martinez AP, Cohen C, Hanley KZ, Li X(B. Estrogen Receptor and Cytokeratin 5 Are Reliable Markers to Separate Usual Ductal Hyperplasia From Atypical Ductal Hyperplasia and Low-Grade Ductal Carcinoma In Situ. Arch Pathol Lab Med 2016; 140:686-9. [DOI: 10.5858/arpa.2015-0238-oa] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Context.—High–molecular weight cytokeratins, such as cytokeratin 5 (CK5), are helpful to distinguish usual ductal hyperplasia (UDH) from atypical ductal hyperplasia (ADH) or low-grade ductal carcinoma in situ (DCIS). Few studies have looked at combining CK5 with estrogen receptor (ER) to differentiate UDH from ADH.
Objective.—To evaluate the expression pattern of CK5 and ER as single or combined markers to separate UDH from ADH and low-grade DCIS.
Design.—A total of 23 ADH, 10 low-grade DCIS, and 32 UDH whole-tissue slides were stained for ER, CK5, progesterone receptor (PR), and Bcl-2. Nuclear staining of ER and PR was scored as diffuse (>80%), focal (10%–80%), or negative (<10%). Cytoplasmic staining of CK5 and Bcl-2 was scored as diffuse (>60%), focal (10%–60%), or negative (<10%). Differences in staining patterns were evaluated.
Results.—For ER staining: 94% of ADH/DCIS cases showed a diffuse staining pattern, whereas none of the 32 UDH cases showed diffuse staining. For CK5 staining: 96% of ADH/DCIS cases were negative or focally positive, whereas all 32 UDH cases had diffuse staining. The combination of ER and CK5 increased the sensitivity (94% to 97%). For PR staining: 11 of 23 ADH cases (48%), 6 of 10 DCIS cases (60%), and 4 of 32 UDH cases (13%) showed diffuse staining. Bcl-2 staining showed no statistical significance (P = .73).
Conclusions.—Although morphology remains the gold standard, ER and CK5 are useful makers to differentiate UDH from ADH. Progesterone receptor staining may have limited value, and Bcl-2 staining is not useful.
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Affiliation(s)
- Anthony P. Martinez
- From the Department of Pathology and Laboratory Medicine, Emory University, Atlanta, Georgia
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11
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Parody R, Lopez-Corral L, Godino OL, Cadenas IG, Martinez AP, Vazquez L, Martino R, Martinez C, Solano C, Barba P, Valcarcel D, Caballero-Velazquez T, Marquez-Malaver FJ, Sierra J, Caballero D, Perez-Simón JA. GVHD prophylaxis with sirolimus-tacrolimus may overcome the deleterious effect on survival of HLA mismatch after reduced-intensity conditioning allo-SCT. Bone Marrow Transplant 2014; 50:121-6. [PMID: 25310306 DOI: 10.1038/bmt.2014.220] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 08/11/2014] [Accepted: 08/15/2014] [Indexed: 02/05/2023]
Abstract
Large studies, mostly based on series of patients receiving CSA/tacrolimus (TKR) plus MTX as immunoprophylaxis, have demonstrated a deleterious effect on survival of the presence of a single mismatch out of eight loci after allogeneic hematopoietic SCT (alloHSCT). We retrospectively analyzed a series of 159 adult patients who received sirolimus(SRL)/TKR prophylaxis after alloHSCT. We compared overall outcomes according to HLA compatibility in A, B, C and DRB1 loci at the allele level: 7/8 (n=20) vs 8/8 (n=139). Donor type was unrelated in 95% vs 70% among 7/8 vs 8/8 pairs, respectively (P=0.01). No significant differences were observed in 3-year OS (68 vs 62%), 3-year EFS (53 vs 49%) and 1-year non-relapse mortality (9 vs 13%). Cumulative incidence of grades II-IV acute GVHD (aGVHD) was significantly higher in 7/8 alloHSCT (68% vs 42%, P<0.001) but no significant differences were found for III-IV aGVHD (4.5% vs 11%), overall (35% vs 53%) and extensive (20% vs 35%) chronic GHVD in 7/8 vs 8/8 subgroups, respectively. In summary, the present study indicates favorable outcomes after alloHSCT using the combination of SRL/TKR combination as GVHD prophylaxis with OS in the range of 55-70%, and non-significant differences in overall outcomes, irrespective of the presence of any mismatches at obligatory loci.
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Affiliation(s)
- R Parody
- Servicio de Hematología, Hospital Universitario / Instituto de Biomedicina (IBIS)/CSIC, Seville, Spain
| | | | - O L Godino
- Hospital Clínico de Salamanca, Salamanca, Spain
| | - I G Cadenas
- Hospital Santa Creu i Sant Pau, Barcelona, Spain
| | | | - L Vazquez
- Hospital Clínico de Salamanca, Salamanca, Spain
| | - R Martino
- Hospital Santa Creu i Sant Pau, Barcelona, Spain
| | - C Martinez
- Hospital Clinic de Barcelona, Barcelona, Spain
| | - C Solano
- Hospital Clínico de Valencia, Valencia, Spain
| | - P Barba
- Hospital Vall d'Hebron, Barcelona, Spain
| | | | - T Caballero-Velazquez
- Servicio de Hematología, Hospital Universitario / Instituto de Biomedicina (IBIS)/CSIC, Seville, Spain
| | - F J Marquez-Malaver
- Servicio de Hematología, Hospital Universitario / Instituto de Biomedicina (IBIS)/CSIC, Seville, Spain
| | - J Sierra
- Hospital Santa Creu i Sant Pau, Barcelona, Spain
| | - D Caballero
- Hospital Clínico de Salamanca, Salamanca, Spain
| | - J A Perez-Simón
- Servicio de Hematología, Hospital Universitario / Instituto de Biomedicina (IBIS)/CSIC, Seville, Spain
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Cicero-Fernandez P, Torres V, Rosales A, Cesar H, Dorland K, Muñoz R, Uribe R, Martinez AP. Evaluation of human exposure to ambient PM10 in the metropolitan area of Mexico City using a GIS-based methodology. J Air Waste Manag Assoc 2001; 51:1586-1593. [PMID: 11720106 DOI: 10.1080/10473289.2001.10464385] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The main goal of this study was to evaluate the magnitude of outdoor exposure to fine particulate matter (PM10) potentially experienced by the population of metropolitan Mexico City. With the use of a geographic information system (GIS), spatially resolved PM10 distributions were generated and linked to the local population. The PM10 concentration exceeded the 24-hr air quality standard of 150 microg/m3 on 16% of the days, and the annual air quality standard of 50 microg/m3 was exceeded by almost twice its value in some places. The basic methodology described in this paper integrates spatial demographic and air quality databases, allowing the evaluation of various air pollution reduction scenarios. Achieving the annual air quality standard would represent a reduction in the annual arithmetic average concentration of 14 microg/m3 for the typical inhabitant. Human exposure to particulate matter (PM) has been associated with mortality and morbidity in Mexico City; reducing the concentration levels of this pollutant would represent a reduction in mortality and morbidity and the associated cost of such impacts. This methodology is critical to assessing the potential benefits of the current initiative to improve air quality implemented by the Environmental Metropolitan Commission of Mexico City.
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Affiliation(s)
- P Cicero-Fernandez
- Department of Environmental Health Sciences, School of Public Health, University of California, Los Angeles 90095-1772, USA
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13
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Abstract
The products obtained from the sequential reaction of [Ir2(mu-H)(mu-Pz)2H3(NCCH3)(PiPr3)2] (1) with diphenylacetylene and their subsequent reactions with hydrogen have been investigated in order to deduce the mechanisms operating in the hydrogenation reactions catalyzed by 1. The reaction of 1 with an excess of diphenylacetylene gives cis-stilbene and [Ir2(mu-H)(mu-Pz)2-[eta1-C6H4-2-[eta1-(Z)-C=CHPh]]((Z)-C(Ph) =CHPh](NCCH3)(PiPr3)2] (2), the structure of which has been determined by X-ray diffraction. The formation of 2 involves the intermediate species [Ir2(mu-H)(mu-Pz)2H2((Z)-C(Ph)=CHPh](NCCH3)-(PiPr3)2](3),[Ir2(mu-H)(mu-Pz)2H[(Z)-C(Ph)=CHPh]2(NCCH3)(PiPr3)2] (4), and [Ir2(mu-H)(mu-Pz)2H[eta1-C6H4-2-[eta1-(Z)-C=CHPh](NCCH3)(PiPr3)2] (5), which have been isolated and characterized. These three complexes react with hydrogen to give cis-stilbene and 1 and are possible intermediates of the diphenylacetylene hydrogenation under catalytic conditions. Nevertheless, the rate of formation of 5 is very slow compared with the rate of catalytic hydrogenation, which excludes its participation during catalysis. Compound 2 also reacts with hydrogen in benzene, but in this case the hydrogenation gives 1,2-diphenylethane as the sole organic product. The course of this reaction in acetone has been investigated, and deuteration experiments were carried out. The formation of [Ir2(mu-H)(mu-Pz)2H[eta1-C6H4-2-[eta1-(Z)-C=CHPh]](OC(CD3)2)(PiPr3)2] (6) and [Ir2(mu-H)(mu-Pz)2H[eta1-C6H4-2-[eta1-(Z)-C-CHPh]](NCCH3)(PiPr3)2] (7) was observed under these conditions. The experimental evidence obtained supports two alternative mechanisms for the alkyne hydrogenation catalyzed by 1, one of them being dinuclear and the other mononuclear. The experimental data suggest that the former is favored.
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Affiliation(s)
- F Torres
- Departamento de Quimica Inorganica, Instituto de Ciencia de Materiales de Aragon, Universidad de Zaragoza-CSIC, Spain
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Fan HW, Cardoso JL, Olmos RD, Almeida FJ, Viana RP, Martinez AP. Hemorrhagic syndrome and acute renal failure in a pregnant woman after contact with Lonomia caterpillars: a case report. Rev Inst Med Trop Sao Paulo 1998; 40:119-20. [PMID: 9755567 DOI: 10.1590/s0036-46651998000200010] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A case of a 37-week pregnant woman who developed a hemorrhagic syndrome and acute renal failure after contact with Lonomia caterpillars is reported. The accident also initiated labour and the patient gave birth to an alive child. Some pathophysiological aspects of the genital bleeding and of the acute renal failure are discussed.
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Affiliation(s)
- H W Fan
- Hospital Vital Brazil, Instituto Butantan, São Paulo, Brazil
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15
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Minchinton AI, Lemmon MJ, Tracy M, Pollart DJ, Martinez AP, Tosto LM, Brown JM. Second-generation 1,2,4-benzotriazine 1,4-di-N-oxide bioreductive anti-tumor agents: pharmacology and activity in vitro and in vivo. Int J Radiat Oncol Biol Phys 1992; 22:701-5. [PMID: 1544841 DOI: 10.1016/0360-3016(92)90507-e] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
SR 4233 (1,2,4-benzotriazine-3-amine 1,4-dioxide) will soon be entering Phase I clinical trials as a new bioreductive cytotoxic agent for the treatment of solid tumors in combination with fractionated radiotherapy. We have selected 3 from over 50 analogues of SR 4233 which showed particular promise as second generation bioreductive antitumor agents. These compounds, when compared to SR 4233, have higher hypoxic toxicity and comparable or higher oxic to hypoxic cytotoxicity ratios in vitro and similar animal toxicity. We have compared the effectiveness of these three compounds with SR 4233 in two tumor systems and have examined some pharmacokinetic properties. The results show that replacement of the amino group at the 3-position of SR 4233 with either a hydrogen or an N,N-dialkylaminoalkylamino group shortens the half-life of these compounds in the blood because of the combined effects of partition coefficients, basicity, and higher reactivity. SR 4754 and SR 4755, the N,N-dialkylaminoalkylamino derivatives, exhibited shorter plasma half-lives than SR 4233 but exhibited lower anti-tumor activity than SR 4233 based on equal mouse toxicity in a fractionated regimen. SR 4482, with the hydrogen substitution and very high electron affinity, possessed a very short blood half life yet retained similar anti-tumor activity as SR 4233.
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Affiliation(s)
- A I Minchinton
- Department of Radiation Oncology, Stanford University Medical School, CA 94305
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16
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VanDercar DH, Martinez AP, De Lisser EA. Sleep apnea syndromes: a potential contraindication for patient-controlled analgesia. Anesthesiology 1991; 74:623-4. [PMID: 1822081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- D H VanDercar
- University of Miami/Jackson Memorial Hospital, Florida 33136
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Nagle RB, Witte MH, Martinez AP, Witte CL, Hendrix MJ, Way D, Reed K. Factor VIII-associated antigen in human lymphatic endothelium. Lymphology 1987; 20:20-4. [PMID: 3110507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Lymphatic vascular endothelium both on tissue section and in culture exhibits positivity for Factor VIII-associated antigen although staining is generally less intense and more spotty than in comparable blood vascular endothelium. Lymphatic endothelium also exhibits Weibel-Palade bodies. Neither marker, therefore, reliably distinguishes blood vascular endothelium from lymphatic endothelium.
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Witte CL, Martinez AP, Witte MH. Plasma atriopeptin before and after peritoneojugular venous shunt for hepatogenic ascites. N Engl J Med 1987; 316:487. [PMID: 2949154 DOI: 10.1056/nejm198702193160818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Martinez AP, Mobley WP, Witte CL. A technical modification to improve experimental production of hepatogenic ascites. Lymphology 1986; 19:168-9. [PMID: 3561037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Constriction of the thoracic inferior vena cava is a useful experimental maneuver to reproduce massive ascites. Unfortunately, the margin of safety of this technique is narrow in that too much constriction overly restricts venous return with subsequent shock and death, and lesser constriction is often associated with extensive venous collateralization via the azygos system and failure to sustain hepatic congestion. By combining azygos vein ligation with 50% constriction of the supradiaphragmatic inferior vena caval circumference at the time of the initial thoracotomy, we have found that intense hepatic congestion is sustained and that dogs consistently develop massive ascites within 2-3 weeks.
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Martinez AP, Lee WW, Henry DW. Potential antitumor agents. Some sulfur-substituted derivatives of alpha- and beta-2'-deoxythioguanosine. J Med Chem 1977; 20:341-4. [PMID: 845866 DOI: 10.1021/jm00213a005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A series of ten S-substituted derivatives of the alpha and beta anomers (1a and 1b) of 2'-deoxy-6-thioguanosine has been prepared by S-alkylation of the parent nucleosides and/or by mercaptide displacement reactions on 6-chloro intermediates. Against L1210 murine leukemia all beta anomers were active but potency was reduced relative to 1b. Most S-alkyl alpha anomers were inactive in this test. Limited testing against P388 murine leukemia showed all alpha-anomer derivatives to be inactive but the beta anomers were more effective than the parent. S-Substitution sharply reduced acute toxicity in both series. In vitro DNA and RNA synthesis inhibition data are also reported. The antitumor activity of these derivatives and of the 2',5'-di-O-acetyl derivatives of 1a and 1b against lymphoid leukemia L1210 is reported. Some results with the lymphocytic leukemia P388 and an in vitro assay of the inhibition of nucleic acid synthesis are also given.
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Lee WW, Martinez AP, Smith TH, Henry DW. Daunomycinone analogues via the Diels-Alder reaction. Synthesis and chemistry of some 6,11-dihydroxy-5,12-naphthacenediones. J Org Chem 1976; 41:2296-303. [PMID: 932859 DOI: 10.1021/jo00875a018] [Citation(s) in RCA: 41] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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22
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Lee WW, Martinez AP, Goodman L. Folic acid antagonists. Methotrexate analogs containing spurious amino acids. Dichlorohomofolic acid. J Med Chem 1974; 17:326-30. [PMID: 4811228 DOI: 10.1021/jm00249a015] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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23
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Lee WW, Martinez AP, Goodman L, Henry DW. Guanine, thioguanine, and related nucleosides by the mercuric cyanide--silyl method. An improved synthesis of -2'-deoxythioguanosine. J Org Chem 1972; 37:2923-7. [PMID: 5069391 DOI: 10.1021/jo00984a001] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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24
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Lee WW, Martinez AP, Blackford RW, Bartuska VJ, Reist EJ, Goodman L. Xylo- and arabinofuranosylthioguanine and related nucleosides derived from 2-acetamido-6-chloropurine. J Med Chem 1971; 14:819-23. [PMID: 5140008 DOI: 10.1021/jm00291a011] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Martinez AP, Lee WW, Goodman L. 9-(2- and 3-deoxy-beta-d-threo-pentofuranosyl)adenine. The epimers of 2'-deoxyadenosine and 3'-deoxyadenosine(cordycepin). J Org Chem 1966; 31:3263-7. [PMID: 5917473 DOI: 10.1021/jo01348a038] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Martinez AP. Contribution to the Study of the Contagiousness of Paludism and Prophylaxia of the Same. Public Health Pap Rep 1899; 25:376-384. [PMID: 19600897 PMCID: PMC2329509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
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