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Castaneda CA, Castillo M, Bernabe LA, Suarez N, Romero A, Sanchez J, Torres E, Enciso J, Tello K, Enciso N, Velarde M, De La Cruz M, Dunstan J, Cotrina JM, Abugattas J, Pinillos MA, Roque K, Fuentes H, Poquioma E, Guerra H, Gomez HL. Association between PIK3CA Mutations in Blood and Tumor-Infiltrating Lymphocytes in Peruvian Breast Cancer Patients. Asian Pac J Cancer Prev 2022; 23:3331-3337. [PMID: 36308356 PMCID: PMC9924322 DOI: 10.31557/apjcp.2022.23.10.3331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVE To evaluate the relationship between circulating tumor DNA (ctDNA) presence and tumor features including tumor-infiltrating lymphocyte (TIL) levels in Peruvian breast cancer patients. MATERIALS AND METHODS This was a prospective study conducted at the Instituto Nacional de Enfemedades Neoplasicas, Peru. We evaluated level of TIL and PIK3CA mutations in ctDNA. Clinical characteristics, including outcome data, were collected from the patient file. Survival was calculated from the date of blood sample drawn to the event time. Data collected were analyzed using SPSS software version 25. RESULTS We analyzed plasma samples from 183 breast cancer patients. most cases were of Luminal-B (44.8%) phenotype and stage II (41.5%), and median stromal TIL was 30%. PIK3CA mutation in ctDNA was detected in 35% cases (most with E545K) and was associated with lower TIL level (p=0.04). PIK3CA in ctDNA tended to be associated with advanced stages (p=0.09) in the whole series and with higher recurrence rates (p=0.053) in the non-metastatic setting. Patients with presence of PIK3CA in ctDNA tended to have shorter survival (p=0.083). CONCLUSION Presence of PIK3CA mutation in ctDNA was frequently found in our Peruvian breast cancer series, was associated with lower TIL levels and tended to predict poor outcomes.
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Affiliation(s)
- Carlos A. Castaneda
- Department of Medical Oncology, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru. ,Faculty of Medical Sciences, Universidad Cientifica del Sur, Lima 15067, Peru. ,For Correspondence:
| | - Miluska Castillo
- Department of Research, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru.
| | - Luis A. Bernabe
- Department of Research, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru.
| | - Nancy Suarez
- Department of Research, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru.
| | - Atocha Romero
- Department of Medical Oncology, Puerta de Hierro Majadahonda University Hospital, Madrid, Spain.
| | - Joselyn Sanchez
- Department of Research, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru.
| | - Ebert Torres
- Department of Pathology, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru.
| | - Javier Enciso
- Laboratorio de Cultivo Celular e Inmunologia, Universidad Cientifica del Sur, Lima 15067, Peru.
| | - Katherine Tello
- Department of Research, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru.
| | - Nataly Enciso
- Laboratorio de Cultivo Celular e Inmunologia, Universidad Cientifica del Sur, Lima 15067, Peru.
| | - Marco Velarde
- Department of Breast and Soft Tissues, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru.
| | - Miguel De La Cruz
- Department of Breast and Soft Tissues, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru.
| | - Jorge Dunstan
- Department of Breast and Soft Tissues, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru.
| | - Jose M. Cotrina
- Department of Breast and Soft Tissues, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru.
| | - Julio Abugattas
- Department of Breast and Soft Tissues, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru.
| | - Miguel A. Pinillos
- Department of Breast and Soft Tissues, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru.
| | - Katia Roque
- Department of Medical Oncology, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru.
| | - Hugo Fuentes
- Department of Medical Oncology, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru.
| | - Ebert Poquioma
- Department of Epidemiology, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru.
| | - Henry Guerra
- Department of Pathology, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru.
| | - Henry L. Gomez
- Department of Medical Oncology, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru.
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Galvez-Nino M, Castillo M, Bernabe L, Suarez N, Sanchez J, Roque K, Neciosup S, Gomez H, Castaneda C. Abstract 509: Tumor inflammation signature (TIS) in residual disease is associated with survival in breast cancer patients with high risk of recurrence. Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: The assessment of tumor inflammation signature (TIS) quantifies the adaptive immune response in the tumor microenvironment and is emerging as a predictor of clinical benefit in breast cancer. In this study we evaluated the ability of TIS to be a prognostic biomarker of survival benefit in patients with moderated and high residual disease after neoadjuvant chemotherapy (NAC) in breast cancer patients and its correlation with residual TILS after NAC.
Methods: We analyzed 46 samples of residual disease of breast cancer patients who received NAC and were under surgery between 2013 - 2018, with high risk of recurrence defined as Residual Cancer Burden (RCB) group II and III. TIS signature was evaluated using the Research Use Only version of 18-gen signature algorithm. Median of TIS score was 5.88, TIS score were categorized in four groups by quartiles and defined as low TIS score (lower quartile, score ≤ 4.82) and high TIS score (score > 4.82). In addition, we quantified the percentage of stromal TILS in residual disease, categorizing level of TILS in high and low level using median (20%) as a cut-off. Survival analysis was performed with Kaplan-Meier method and the associations with Cox regression model. Correlation between TIS and TILS was performed whit Pearson coefficient. Clinical data was collected of medical records.
Results: The median age at diagnosis was 50 years (26y - 78y), 65.2% of patients were Luminal B subtype, 63% were clinical stage IIIB, 26.2% were RCB II and 73.9% RCB III. No correlation between TIS score and percentage of stromal TILS was founded (p = 0.264). After median follow-up of 60 months, estimated median PFS for high TIS score was 71.7 vs 18.2 months for low score (HR = 0.28, 95% CI [0.13-0.64], p = 0.002), and estimated median OS for high TIS score was non-reached vs 40.9 months for low score (HR = 0.28, 95% CI [0.11-0.68], p = 0.005). Did not found differences in PFS (p = 0.408) and OS (p = 0.773) by level of TILS.
Conclusions: High TIS score in moderated/high residual disease after neoadjuvant chemotherapy is associated with survival benefit expressed in prolonged PFS and OS. Level of TILS in residual disease did not show differences in survival and its percentage did not have correlation with TIS score.
Funding: FONDECYT-198-2015/280-INNOVATEPERU-EC-2017.
Citation Format: Marco Galvez-Nino, Miluska Castillo, Luis Bernabe, Nancy Suarez, Joselyn Sanchez, Katia Roque, Silvia Neciosup, Henry Gomez, Carlos Castaneda. Tumor inflammation signature (TIS) in residual disease is associated with survival in breast cancer patients with high risk of recurrence [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 509.
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Affiliation(s)
| | | | - Luis Bernabe
- 1Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Nancy Suarez
- 1Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | | | - Katia Roque
- 1Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | | | - Henry Gomez
- 1Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
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Calderon G, Castaneda CA, Castillo M, Sanchez J, Bernabe L, Suarez N, Tello K, Torres E, Cotrina JM, Dunstan J, De-La-Cruz M, Abugattas J, Guerra H, Manrique JE, Aguayo F, Gomez HL. Human Papillomavirus, Cytomegalovirus Infection and P16 Staining in Breast Tumors from Peruvian Women. Asian Pac J Cancer Prev 2022; 23:1571-1576. [PMID: 35633540 PMCID: PMC9587888 DOI: 10.31557/apjcp.2022.23.5.1571] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Indexed: 11/25/2022] Open
Abstract
Objective: To evaluate the frequency distribution of viral infections in Peruvian Breast Cancer (BC) lesions and its association with clinicopathological features. Additionally, a prospective evaluation of p16 and Tumor-infiltrating lymphocytes (TIL) levels were performed for developing a comprehensive analysis. Methods: Detection of high risk- human papillomavirus (HR- HPV) through qPCR was performed in 447 BC and 79 non-cancer frozen samples. Paired paraffin samples from 238 BC were stained with Human cytomegalovirus (HCMV) and p16 immunohistochemistry. TIL was calculated in 397 BC cases. Results: HCMV was positive in 72.5%. HR- HPV was detected in 2.9% of BC and 1.3% of non-malignant samples. P16+ was found in 28.15% and median TIL percentage was 30. HR- HPV infection was associated with non-ductal histology (p=0.003) and p16+ (p=0.017). Positive P16+ was associated with higher T stage (p=0.022), grade (p=0.009), TIL level (p=0.002), and triple-negative phenotype (p=0.021). Conclusion: HCMV is frequent, but HR- HPV infection is unusual in Peruvian BC. P16+ is associated with HR- PVH infection, high TIL and aggressive features.
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Affiliation(s)
- Gabriela Calderon
- Department of Breast Surgery, Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Carlos A Castaneda
- Department of Medical Oncology, Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru.,Faculty of Health Sciences, Universidad Cientifica del Sur, Lima, Peru
| | - Miluska Castillo
- Department of Research, Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Joselyn Sanchez
- Department of Research, Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Luis Bernabe
- Department of Research, Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Nancy Suarez
- Department of Research, Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Katherine Tello
- Department of Research, Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Ebert Torres
- Department of Pathology, Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Jose M Cotrina
- Department of Breast Surgery, Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Jorge Dunstan
- Department of Breast Surgery, Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Miguel De-La-Cruz
- Department of Breast Surgery, Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Julio Abugattas
- Department of Breast Surgery, Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Henry Guerra
- Department of Pathology, Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Javier E Manrique
- Department of Health Promotion and Prevention, Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Francisco Aguayo
- Laboratory of Oncovirology, Virology Program, Faculty of Medicine, Institute of Biomedical Sciences (ICBM), University of Chile, Santiago, Chile
| | - Henry L Gomez
- Laboratory of Oncovirology, Virology Program, Faculty of Medicine, Institute of Biomedical Sciences (ICBM), University of Chile, Santiago, Chile
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Castañeda C, Castillo M, Bernabe L, Suarez N, Fassan M, Sanchez J, Tello K, Alatrista R, Chavez I, Ruiz E, Bazan Y, Barreda F, Valdivia D, Meng W, Chakravarti A, Sanchez J, Taxa L, Montenegro P. The relationship between tumour infiltrating lymphocytes, Epstein–Barr virus and Helicobacter pylori infection in gastric cancer. Ecancermedicalscience 2022; 16:1362. [PMID: 35685959 PMCID: PMC9085163 DOI: 10.3332/ecancer.2022.1362] [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: 09/29/2021] [Indexed: 11/15/2022] Open
Abstract
Objective Epstein–Barr virus (EBV) and Helicobacter pylori (HP) infections have been extensively recognised as gastric cancer (GC) triggers, and recent publications suggest they could behave as predictive markers for immune-modulating therapies. Tumour-infiltrating lymphocytes (TILs) have also been identified as a predictive biomarker for immunotherapy in different malignancies. This study aimed to investigate the association between EBV and HP infection with TIL levels in GC. Methods TIL evaluation in haematoxylin-eosin was performed by a pathologist and density of CD3, CD8 and CD163 positive (immunohistochemistry staining) immune cells was calculated with the use of digital pathology software. EBV infection was detected by in situ hybridisation (ISH) and by quantitative polymerase chain reaction (qPCR). Methylation status of EBV-related genes was detected by PCR and a methylome analysis was performed by the Illumina Infinium MethylationEPIC BeadChip. HP status was detected by qPCR. Results We included 98 resected GC Peruvian cases in our evaluation. Median TIL percentage was 30. The proportion of EBV+ detected by ISH was 24.1%, of EBV+ detected by qPCR was 41.8%, while 70% showed methylation of EBV-related genes, and 58.21% of cases were HP+. Younger age (p = 0.024), early stages (p = 0.001), HP+ (p = 0.036) and low CD8 density (p = 0.046) were associated with longer overall survival (OS). High TIL level was associated with intestinal subtype (p < 0.001), with grade 2 (p < 0.001), with EBV qPCR+ (p = 0.001), and with methylation of EBV-related genes (p = 0.007). Cases with high TIL level and cases that are EBV positive share eight genes with similarly methylated status in the metabolomic analysis. High CD8 density was associated with EBV PCR+ (p = 0.012) and HP− (0.005). Conclusion Lower CD8 density and HP+ predict longer OS. High TIL level is associated with EBV+ and methylation of EBV-related genes, while lower CD8 density is associated with HP+ GC.
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Affiliation(s)
- Carlos Castañeda
- Facultad de Ciencias de la Salud, Universidad Cientifica del Sur, Lima 15067, Peru
- Departamento de Oncologia Medica, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
- https://orcid.org/0000-0001-6200-0856
| | - Miluska Castillo
- Departamento de Investigación, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
- https://orcid.org/0000-0002-0111-3176
| | - Luis Bernabe
- Departamento de Investigación, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
- https://orcid.org/0000-0003-1896-7060
| | - Nancy Suarez
- Departamento de Investigación, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
- https://orcid.org/0000-0001-5955-3919
| | - Matteo Fassan
- Department of Medicine-DIMED, Surgical Pathology Unit, University of Padua, Padua 35122, Italy
- Veneto Institute of Oncology, IOV-IRCCS, Padua 35128, Italy
- https://orcid.org/0000-0001-6515-5482
| | - Joselyn Sanchez
- Departamento de Investigación, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
- https://orcid.org/0000-0002-6764-4180
| | - Katherine Tello
- Departamento de Investigación, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
- https://orcid.org/0000-0002-4981-3411
| | - Raul Alatrista
- Departamento de Investigación, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
| | - Ivan Chavez
- Departamento de Cirugía en Abdomen, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
- https://orcid.org/0000-0002-3431-3262
| | - Eloy Ruiz
- Departamento de Cirugía en Abdomen, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
- https://orcid.org/0000-0002-4644-0074
| | - Yaqueline Bazan
- Departamento de Cirugía en Abdomen, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
- https://orcid.org/0000-0002-7337-2396
| | - Fernando Barreda
- Departamento de Especialidades Médicas, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
- https://orcid.org/0000-0002-7923-6299
| | - Daniel Valdivia
- Departamento de Especialidades Médicas, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
- https://orcid.org/0000-0002-5917-6452
| | - Wei Meng
- Department of Radiation Oncology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Arnab Chakravarti
- Department of Radiation Oncology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Juvenal Sanchez
- Departamento de Patologia, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
- https://orcid.org/0000-0002-9825-8573
| | - Luis Taxa
- Departamento de Patologia, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
| | - Paola Montenegro
- Departamento de Oncologia Medica, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
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Castaneda CA, Castillo M, Bernabe LA, Sanchez J, Torres E, Suarez N, Tello K, Fuentes H, Dunstan J, De La Cruz M, Cotrina JM, Abugattas J, Guerra H, Gomez HL. A biomarker study in Peruvian males with breast cancer. World J Clin Oncol 2021; 12:926-934. [PMID: 34733614 PMCID: PMC8546657 DOI: 10.5306/wjco.v12.i10.926] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 06/25/2021] [Accepted: 09/08/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Breast cancer (BC) frequency in males is extremely low and tumor features vary from its female counterpart. Breast cancer clinical and pathological features differ by race in women. Tumor infiltrating lymphocyte (TIL) levels, mismatch repair (MMR) protein loss, androgen receptor (AR) expression, and PIK3CA gene mutations are predictive biomarkers of response to biological therapy in female BC. There is limited information about clinical and pathological features as well as predictive biomarkers in males of non-Caucasian races with BC.
AIM To investigate clinicopathological features and biomarkers of BC tumors in males and their prognostic value in Peruvian population.
METHODS This study looked at a single-institution series of 54 Peruvian males with invasive BC who were diagnosed from Jan 2004 to June 2018. Standard pathological features, TIL levels, MMR proteins, AR immunohistochemistry staining, and PIK3CA gene mutations were prospectively evaluated in cases with available paraffin material. Percentage of AR and estrogen receptor (ER) positive cells was additionally calculated by software after slide scanning. Statistical analyses included association tests, intraclass correlation test and Kaplan Meier overall survival curves.
RESULTS The median age was 63 years and most cases were ER-positive (85.7%), HER2 negative (87.2%), Luminal-A phenotype (60%) and clinical stage II (41.5%) among our male breast tumors. Median TIL was 10% and higher levels tended to be associated with Luminal-B phenotype and higher grade. AR-positive was found in 85.3% and was correlated with ER (intraclass index of 0.835, P < 0.001). Loss of MMR proteins was found in 15.4% and PIK3CA mutation (H1047R) in 14.3% (belonged to the Luminal-A phenotype). Loss of MMR proteins was associated with AR-negative (P = 0.018) but not with ER (P = 0.43) or TIL (P = 0.84). Early stages (P < 0.001) and lower grade (P = 0.006) were associated with longer overall survival. ER status, phenotype, AR status, TIL level, MMR protein loss nor PIK3CA mutation was not associated with survival (P > 0.05).
CONCLUSION Male BC is usually ER and AR positive, and Luminal-A. MMR loss and PIK3CA mutations are infrequent. Stage and grade predicted overall survival in our South American country population.
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Affiliation(s)
- Carlos A Castaneda
- Faculty of Health Sciences, Universidad Cientifica del Sur, Lima 15067, Peru
- Department of Medical Oncology, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
| | - Miluska Castillo
- Department of Research, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
| | - Luis A Bernabe
- Department of Research, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
| | - Joselyn Sanchez
- Department of Research, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
| | - Ebert Torres
- Department of Pathology, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
| | - Nancy Suarez
- Department of Research, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
| | - Katherine Tello
- Department of Research, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
| | - Hugo Fuentes
- Department of Medical Oncology, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
| | - Jorge Dunstan
- Department of Breast Cancer Surgery, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
| | - Miguel De La Cruz
- Department of Breast Cancer Surgery, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
| | - Jose Manuel Cotrina
- Department of Breast Cancer Surgery, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
| | - Julio Abugattas
- Department of Breast Cancer Surgery, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
| | - Henry Guerra
- Department of Pathology, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
| | - Henry L Gomez
- Department of Medical Oncology, Instituto Nacional de Enfermedades Neoplasicas, Lima 15038, Peru
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Goñi Ramirez A, De Paula Carranza B, Pastor Sanchis V, Bartrés Salido A, Saenz de Urturi Albisu E, Bultó Boqué N, Eguiguren Bastida M, Pagola Divasson M, Ayete A, Ortiz de Urbina Ugarte D, Suarez N, Erzilbengoa M, Rosa Nieto J. PP-0163 Very long-term biochemical and dosimetric outcomes of LDR boost in intermediate-risk prostate cancer. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06455-0] [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: 11/30/2022]
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Castillo M, Bernabe LA, Castaneda CA, Suarez N, Barreda F, Valdivia D, Ruiz E, Nieves J, Dias-Neto E, Landa-Baella M, Montano-Flores J, Chavez I. Prevalence of H. pylori Infection in Relatives of Peruvian Patients with Gastric Cancer. Asian Pac J Cancer Care 2021. [DOI: 10.31557/apjcc.2021.6.1.53-57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Objective: The aim of this study was to determine the relationship between Helicobacter pylori (H. pylori) infection in relatives and patients with gastric cancer (GC).Methods: H. pylori infection was evaluated by the breath urease test in 171 relatives and by qPCR technique in gastric tissue of 61 patients (n=45 for GC and n=16 for non-GC). Results: There were included 137 relatives of GC patients and 34 of non-GC. The median age of the relatives of patients with a gastric tissue sample was 39 years (10-86). Infection was found in 60.2% (n=103) relatives. There were no higher H. pylori infection rates in relatives of patients with gastric cancer (62% vs 62.9%, p=0.33), H. pylori infection (60% vs 60%, p=0.96), or metaplasia (58.8% vs 61.8%, p=0.71). Conclusion: The prevalence of infection in relatives of GC patients is high in our population but not associated with H. pylori presence in the paired case.
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A Castaneda C, Castillo M, Sanchez J, Casavilca S, Sanchez J, A Bernabe L, Suarez N, Chavez I, Ruiz E, Tello K, R Villa M, Zevallos R, Montenegro P, Dias-Neto E, Landa-Baella M, Taxa L. Detection of Helicobacter pylori in gastric cancer tissue through histopathology, immunohistochemistry and real-time reverse transcription-PCR. Future Microbiol 2020; 15:1131-1137. [PMID: 32954850 DOI: 10.2217/fmb-2019-0280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: Helicobacter pylori is usually detected based on hematoxylin-eosin (H-E) features, but, immunohistochemistry (IHC) and real-time PCR (RT-PCR) are more precise in chronic-gastritis. We evaluated the relevance of these tests in Peruvian gastric cancer samples. Materials & methods: We performed and evaluated H-E, IHC staining and RT-PCR in 288 gastric tumors. Slides were independently evaluated by three pathologists. Results: H. pylori was detected in 167/287 through H-E, 140/288 through IHC and 175/288 through RT-PCR, and positive-status were associated (p < 0.001). H. pylori detection by H-E had a good concordance with IHC (kappa index = 0.632) but poor with RT-PCR (kappa index = 0.317). Higher median gene-copies were found in high H. pylori density through H-E or IHC (p < 0.001). Conclusion: H-E evaluation is accurate in gastric cancer, and IHC and RT-PCR can complement its results.
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Affiliation(s)
- Carlos A Castaneda
- Departamento de Oncología Médica, Instituto Nacional de Enfermedades Neoplásicas, Lima 15038, Peru.,Facultad de Ciencias de la Salud, Universidad Científica del Sur, Lima 15067, Peru
| | - Miluska Castillo
- Departamento de Investigación, Instituto Nacional de Enfermedades Neoplásicas, Lima 15038, Peru
| | - Joselyn Sanchez
- Departamento de Investigación, Instituto Nacional de Enfermedades Neoplásicas, Lima 15038, Peru
| | - Sandro Casavilca
- Departamento de Patología, Instituto Nacional de Enfermedades Neoplásicas, Lima 15038, Peru
| | - Juvenal Sanchez
- Departamento de Patología, Instituto Nacional de Enfermedades Neoplásicas, Lima 15038, Peru
| | - Luis A Bernabe
- Departamento de Investigación, Instituto Nacional de Enfermedades Neoplásicas, Lima 15038, Peru
| | - Nancy Suarez
- Departamento de Investigación, Instituto Nacional de Enfermedades Neoplásicas, Lima 15038, Peru
| | - Ivan Chavez
- Departamento de Abdomen, Instituto Nacional de Enfermedades Neoplásicas, Lima 15038, Peru
| | - Eloy Ruiz
- Departamento de Abdomen, Instituto Nacional de Enfermedades Neoplásicas, Lima 15038, Peru
| | - Katherine Tello
- Departamento de Investigación, Instituto Nacional de Enfermedades Neoplásicas, Lima 15038, Peru
| | - Maria R Villa
- Departamento de Patología, Instituto Nacional de Enfermedades Neoplásicas, Lima 15038, Peru
| | - Rocio Zevallos
- Departamento de Patología, Instituto Nacional de Enfermedades Neoplásicas, Lima 15038, Peru
| | - Paola Montenegro
- Departamento de Oncología Médica, Instituto Nacional de Enfermedades Neoplásicas, Lima 15038, Peru
| | - Emmanuel Dias-Neto
- Laboratory of Medical Genomics, CIPE, A.C. Camargo Cancer Center, São Paulo 04002-010, Brasil
| | - Maria Landa-Baella
- Departamento de Investigación, Instituto Nacional de Enfermedades Neoplásicas, Lima 15038, Peru
| | - Luis Taxa
- Departamento de Patología, Instituto Nacional de Enfermedades Neoplásicas, Lima 15038, Peru
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Castaneda CA, Castillo M, Chavez I, Barreda F, Suarez N, Nieves J, Bernabe LA, Valdivia D, Ruiz E, Dias-Neto E, Landa-Baella MP, Bazan Y, Rengifo CA, Montenegro P. Prevalence of Helicobacter pylori Infection, Its Virulent Genotypes, and Epstein-Barr Virus in Peruvian Patients With Chronic Gastritis and Gastric Cancer. J Glob Oncol 2020; 5:1-9. [PMID: 31479342 PMCID: PMC6733198 DOI: 10.1200/jgo.19.00122] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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] [Indexed: 12/12/2022] Open
Abstract
PURPOSE Helicobacter pylori (HP) and Epstein Barr virus (EBV) infections induce chronic gastritis (CG) and are accepted carcinogenics of gastric cancer (GC). Our objective for this study was to determine the prevalence of these agents and clinicopathological features of GC and CG associated with the infection. PATIENTS AND METHODS A single-center cohort of 375 Peruvian patients with GC and 165 control subjects with CG were analyzed. Evaluation of HP and EBV genes was performed through quantitative polymerase chain reaction. RESULTS Prevalence of HP was 62.9% in the whole population and 60.8% in the GC subset. The cagA gene was detected in 79.9%; vacAs1 and vacAm1 alleles in 41.6% and 60.7%, respectively; and concurrent expression of vacAs1 and vacAm1 in 30.4% of infected patients in the whole series. The prevalence of EBV was 14.1% in the whole population and was higher in GC (P < .001). Coinfection of HP and EBV was found in 7.8% and was also higher in GC in univariate (P < .001) and multivariate (P = .011) analyses. Infection rates of HP and EBV were not associated with a geographic location in the whole series. Few clinicopathological features have been associated with infectious status. CONCLUSION Prevalence of HP infection and virulent strains are high in the Peruvian population. Infection by EBV was more frequent in patients with GC.
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Affiliation(s)
| | | | - Iván Chavez
- Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | | | - Nancy Suarez
- Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Jais Nieves
- Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Luis A Bernabe
- Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | | | - Eloy Ruiz
- Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
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Castillo M, Bernabe L, Castaneda CA, Chavez I, Ruiz E, Barreda F, Valdivia D, Suarez N, Nieves J, Dias-Neto E, Boehnke K, Landa-Baella MP, Montenegro P. Helicobacter Pylori Detected in Tap Water of Peruvian Patients with Gastric Cancer. Asian Pac J Cancer Prev 2019; 20:3193-3196. [PMID: 31759341 PMCID: PMC7062988 DOI: 10.31557/apjcp.2019.20.11.3193] [Citation(s) in RCA: 4] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVE To evaluate the correlation between the presence of H. pylori in paired samples of tap water and gastric cancer (GC) lesion in Lima city (Peru). MATERIAL AND METHODS Gastric tissue and tap-water samples were prospectively collected from 82 Gastric Cancer who lived in Lima. HspA and ureA genes were evaluated by qPCR in the samples. Results: The median age of patients with GC was 63 years, 52.4% were men and stage-II in 36.6%. A home-living time> 10 years was reported in 84.1% of patients. Boiling water treatment was indicated in 85.4% of cases. H. pylori was detected in 69.5% of gastric tissues and in 12.2% of analyzed tap-water. There was no differences in gastric infection rates among those with or without water contamination (70% vs. 69.4%, p=0.971). Conclusion & Impact: H. pylori was found in tap-water samples, however, detection rates were lower than in gastric cancer samples. Other sources of infection transmission should be investigated.
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Affiliation(s)
- Miluska Castillo
- Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru.,Universidad Científica del Sur, Peru
| | - Luis Bernabe
- Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Carlos A Castaneda
- Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru.,Universidad Científica del Sur, Peru
| | - Ivan Chavez
- Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Eloy Ruiz
- Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | | | | | - Nancy Suarez
- Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
| | - Jais Nieves
- Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
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Suarez N. The burden of death from drowning. Anaesthesia 2014; 69:1182. [DOI: 10.1111/anae.12852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- N. Suarez
- University Hospitals Bristol; Bristol UK
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Suarez N. Comparative Leaf Anatomy and Pressure-Volume Analysis in Plants of Ipomoea pes-caprae Experimenting Saline and/or Drought Stress. ACTA ACUST UNITED AC 2010. [DOI: 10.3923/ijb.2011.53.62] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Puma M, Laredo E, Bello A, Galavis ME, Suarez N. Computer analysis of electron paramagnetic resonance data using the Monte Carlo method. ACTA ACUST UNITED AC 2000. [DOI: 10.1088/0022-3719/21/32/010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Contreras I, Reiser KM, Martinez N, Giansante E, Lopez T, Suarez N, Postalian S, Molina M, Gonzalez F, Sanchez MR, Camejo M, Blanco MC. Effects of aspirin or basic amino acids on collagen cross-links and complications in NIDDM. Diabetes Care 1997; 20:832-5. [PMID: 9135951 DOI: 10.2337/diacare.20.5.832] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE To determine if long-term therapy with aspirin or basic amino acids for subjects with NIDDM reduces the severity of clinical complications and/or reduces tissue levels of markers of glycooxidative damage. RESEARCH DESIGN AND METHODS Subjects with NIDDM were administered either aspirin (100 mg/day) or a combination of basic amino acids consisting of L-arginine (2 g/day) plus L-lysine (0.5 g/day) for 1 year. The study was double-blind and placebo-controlled. The presence and severity of retinopathy, nephropathy, and neuropathy were assessed in all subjects at 4-month intervals, as were serum blood glucose, glycohemoglobin levels, and presence of albuminuria. Collagen cross-linking and collagen glycation were measured in skin collagen obtained by biopsy at the beginning and the end of the study. Skin biopsies were also obtained from age-matched control subjects. RESULTS Skin samples obtained from NIDDM subjects at the beginning of the study had significantly increased levels of glucitolyllysine, pentosidine, and hydroxypyridinium, as compared with age-matched control subjects. Pentosidine levels were significantly correlated with severity of retinopathy and neuropathy, but not nephropathy. Subjects receiving aspirin, but not amino acids or placebo, had significantly decreased levels of skin pentosidine after 1 year of therapy. CONCLUSIONS It is concluded that 1) low-dose aspirin may reduce glycooxidative damage in people with NIDDM, and 2) treatment may need to continue for more than 1 year before clinical status improves.
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Affiliation(s)
- I Contreras
- Luis Razetti Medical School, Central University of Venezuela, Caracas, Venezuela
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Suarez N, Laredo E, Bello A, Gómez M, Marco C, Fatou J. Dielectric relaxations and phase transitions in thermotropic polymer liquid crystals: poly(N-ethylene oxide terephthaloyl bis(4-oxybenzoate))s. POLYMER 1996. [DOI: 10.1016/0032-3861(96)88463-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Suarez N, Walum E, Eriksson H. Cellular neurotoxicity of trivalent manganese bound to transferrin or pyrophosphate studied in human neuroblastoma (SH-SY5Y) cell cultures. Toxicol In Vitro 1995; 9:717-21. [DOI: 10.1016/0887-2333(95)00062-d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/14/1994] [Indexed: 10/17/2022]
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Gómez MA, Marco C, Fatou JMG, Suarez N, Laredo E, Bello A. Relaxations in liquid crystalline poly(tetraethylene oxide terephthaloyl-bis-4-oxybenzoate). ACTA ACUST UNITED AC 1995. [DOI: 10.1002/polb.1995.090330811] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Aldana M, Laredo E, Bello A, Suarez N. Direct signal analysis applied to the determination of the relaxation parameters from TSDC spectra of polymers. ACTA ACUST UNITED AC 1994. [DOI: 10.1002/polb.1994.090321307] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.6] [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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Contreras I, Reiser KM, Martinez N, Giansante E, Lopez T, Suarez N, Postalian S, Molina M, Gonzalez-Mujica F, Sanchez MR. Pentosidine content in skin collagen from type II diabetic patients. Biochem Soc Trans 1994; 22:13S. [PMID: 8206207 DOI: 10.1042/bst022013s] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- I Contreras
- Luis Razetti Medical School and University Hospital, Central University of Venezuela, Caracas
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Laredo E, Díaz M, Suarez N, Bello A. Paramagnetic centers and dipolar defects in CaF2:Gd3+ and CaF2:Gd3++Lu3+. Phys Rev B Condens Matter 1992; 46:11415-11424. [PMID: 10003026 DOI: 10.1103/physrevb.46.11415] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Laredo E, Suarez N, Bello A, Puma M, Figueroa D, Schoonman J. Dislocation polarization and space-charge relaxation in solid solutions Ba1-xLaxF2+x. Phys Rev B Condens Matter 1985; 32:8325-8331. [PMID: 9937017 DOI: 10.1103/physrevb.32.8325] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Puma M, Bello A, Suarez N, Laredo E. Effect of the internal field on polarization and depolarization experiments on SrF2:La3+. Phys Rev B Condens Matter 1985; 32:5424-5428. [PMID: 9937759 DOI: 10.1103/physrevb.32.5424] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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