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Qi L, Baxter P, Kogiso M, Zhang H, Braun FK, Lindsay H, Zhao S, Xiao S, Abdallah AS, Suarez M, Huang Z, Teo WY, Yu L, Zhao X, Liu Z, Huang Y, Su JM, Man TK, Lau CC, Perlaky L, Du Y, Li XN. Direct Implantation of Patient Brain Tumor Cells into Matching Locations in Mouse Brains for Patient-Derived Orthotopic Xenograft Model Development. Cancers (Basel) 2024; 16:1716. [PMID: 38730671 PMCID: PMC11083000 DOI: 10.3390/cancers16091716] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Revised: 04/11/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
Background: Despite multimodality therapies, the prognosis of patients with malignant brain tumors remains extremely poor. One of the major obstacles that hinders development of effective therapies is the limited availability of clinically relevant and biologically accurate (CRBA) mouse models. Methods: We have developed a freehand surgical technique that allows for rapid and safe injection of fresh human brain tumor specimens directly into the matching locations (cerebrum, cerebellum, or brainstem) in the brains of SCID mice. Results: Using this technique, we successfully developed 188 PDOX models from 408 brain tumor patient samples (both high-and low-grade) with a success rate of 72.3% in high-grade glioma, 64.2% in medulloblastoma, 50% in ATRT, 33.8% in ependymoma, and 11.6% in low-grade gliomas. Detailed characterization confirmed their replication of the histopathological and genetic abnormalities of the original patient tumors. Conclusions: The protocol is easy to follow, without a sterotactic frame, in order to generate large cohorts of tumor-bearing mice to meet the needs of biological studies and preclinical drug testing.
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Affiliation(s)
- Lin Qi
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Sun Yat-sen University, Shenzhen 510080, China;
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (S.X.); (A.S.A.); (M.S.); (Z.H.)
| | - Patricia Baxter
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Mari Kogiso
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Huiyuan Zhang
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Frank K. Braun
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Holly Lindsay
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Sibo Zhao
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Sophie Xiao
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (S.X.); (A.S.A.); (M.S.); (Z.H.)
| | - Aalaa Sanad Abdallah
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (S.X.); (A.S.A.); (M.S.); (Z.H.)
| | - Milagros Suarez
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (S.X.); (A.S.A.); (M.S.); (Z.H.)
| | - Zilu Huang
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (S.X.); (A.S.A.); (M.S.); (Z.H.)
| | - Wan Yee Teo
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- The Laboratory of Pediatric Brain Tumor Research Office, SingHealth Duke-NUS Academic Medical Center, Singapore 169856, Singapore
| | - Litian Yu
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Xiumei Zhao
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Zhigang Liu
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Yulun Huang
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Jack M. Su
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
| | - Tsz-Kwong Man
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
| | - Ching C. Lau
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
| | - Laszlo Perlaky
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
| | - Yuchen Du
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (S.X.); (A.S.A.); (M.S.); (Z.H.)
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL 60611, USA
| | - Xiao-Nan Li
- Texas Children’s Cancer Center, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA; (P.B.); (M.K.); (H.Z.); (F.K.B.); (H.L.); (S.Z.); (W.Y.T.); (L.Y.); (X.Z.); (Z.L.); (Y.H.); (J.M.S.); (T.-K.M.); (C.C.L.); (L.P.)
- Laboratory of Molecular Neuro-Oncology, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX 77030, USA
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (S.X.); (A.S.A.); (M.S.); (Z.H.)
- The Laboratory of Pediatric Brain Tumor Research Office, SingHealth Duke-NUS Academic Medical Center, Singapore 169856, Singapore
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Habowski AN, Budagavi DP, Scherer SD, Aurora AB, Caligiuri G, Flynn WF, Langer EM, Brody JR, Sears RC, Foggetti G, Arnal Estape A, Nguyen DX, Politi KA, Shen X, Hsu DS, Peehl DM, Kurhanewicz J, Sriram R, Suarez M, Xiao S, Du Y, Li XN, Navone NM, Labanca E, Willey CD. Patient-Derived Models of Cancer in the NCI PDMC Consortium: Selection, Pitfalls, and Practical Recommendations. Cancers (Basel) 2024; 16:565. [PMID: 38339316 PMCID: PMC10854945 DOI: 10.3390/cancers16030565] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/16/2024] [Accepted: 01/20/2024] [Indexed: 02/12/2024] Open
Abstract
For over a century, early researchers sought to study biological organisms in a laboratory setting, leading to the generation of both in vitro and in vivo model systems. Patient-derived models of cancer (PDMCs) have more recently come to the forefront of preclinical cancer models and are even finding their way into clinical practice as part of functional precision medicine programs. The PDMC Consortium, supported by the Division of Cancer Biology in the National Cancer Institute of the National Institutes of Health, seeks to understand the biological principles that govern the various PDMC behaviors, particularly in response to perturbagens, such as cancer therapeutics. Based on collective experience from the consortium groups, we provide insight regarding PDMCs established both in vitro and in vivo, with a focus on practical matters related to developing and maintaining key cancer models through a series of vignettes. Although every model has the potential to offer valuable insights, the choice of the right model should be guided by the research question. However, recognizing the inherent constraints in each model is crucial. Our objective here is to delineate the strengths and limitations of each model as established by individual vignettes. Further advances in PDMCs and the development of novel model systems will enable us to better understand human biology and improve the study of human pathology in the lab.
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Affiliation(s)
- Amber N. Habowski
- Cold Spring Harbor Laboratory, Long Island, NY 11724, USA; (A.N.H.); (D.P.B.); (G.C.)
| | - Deepthi P. Budagavi
- Cold Spring Harbor Laboratory, Long Island, NY 11724, USA; (A.N.H.); (D.P.B.); (G.C.)
| | - Sandra D. Scherer
- Department of Oncologic Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112, USA;
| | - Arin B. Aurora
- Children’s Research Institute and Department of Pediatrics, University of Texas Southwestern, Dallas, TX 75235, USA;
| | - Giuseppina Caligiuri
- Cold Spring Harbor Laboratory, Long Island, NY 11724, USA; (A.N.H.); (D.P.B.); (G.C.)
| | | | - Ellen M. Langer
- Division of Oncological Sciences, Oregon Health & Science University, Portland, OR 97239, USA;
| | - Jonathan R. Brody
- Department of Surgery, Oregon Health & Science University, Portland, OR 97239, USA;
| | - Rosalie C. Sears
- Department of Molecular and Medical Genetics, Oregon Health & Science University, Portland, OR 97239, USA;
| | | | - Anna Arnal Estape
- Department of Internal Medicine, Yale University, New Haven, CT 06520, USA;
| | - Don X. Nguyen
- Department of Pathology, Yale University, New Haven, CT 06520, USA; (D.X.N.); (K.A.P.)
| | - Katerina A. Politi
- Department of Pathology, Yale University, New Haven, CT 06520, USA; (D.X.N.); (K.A.P.)
| | - Xiling Shen
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA 90024, USA;
| | - David S. Hsu
- Department of Medicine, Duke University, Durham, NC 27710, USA;
| | - Donna M. Peehl
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA 94158, USA; (D.M.P.); (J.K.); (R.S.)
| | - John Kurhanewicz
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA 94158, USA; (D.M.P.); (J.K.); (R.S.)
| | - Renuka Sriram
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA 94158, USA; (D.M.P.); (J.K.); (R.S.)
| | - Milagros Suarez
- Department of Pediatrics, Lurie Children’s Hospital of Chicago Northwestern University, Chicago, IL 60611, USA; (M.S.); (S.X.); (Y.D.); (X.-N.L.)
| | - Sophie Xiao
- Department of Pediatrics, Lurie Children’s Hospital of Chicago Northwestern University, Chicago, IL 60611, USA; (M.S.); (S.X.); (Y.D.); (X.-N.L.)
| | - Yuchen Du
- Department of Pediatrics, Lurie Children’s Hospital of Chicago Northwestern University, Chicago, IL 60611, USA; (M.S.); (S.X.); (Y.D.); (X.-N.L.)
| | - Xiao-Nan Li
- Department of Pediatrics, Lurie Children’s Hospital of Chicago Northwestern University, Chicago, IL 60611, USA; (M.S.); (S.X.); (Y.D.); (X.-N.L.)
| | - Nora M. Navone
- Department of Genitourinary Medical Oncology, David H. Koch Center for Applied Research of Genitourinary Cancers, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (N.M.N.)
| | - Estefania Labanca
- Department of Genitourinary Medical Oncology, David H. Koch Center for Applied Research of Genitourinary Cancers, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (N.M.N.)
| | - Christopher D. Willey
- Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, AL 35233, USA
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Huang ZL, Abdallah AS, Shen GX, Suarez M, Feng P, Yu YJ, Wang Y, Zheng SH, Hu YJ, Xiao X, Liu Y, Liu SR, Chen ZP, Li XN, Xia YF. Silencing GMPPB Inhibits the Proliferation and Invasion of GBM via Hippo/MMP3 Pathways. Int J Mol Sci 2023; 24:14707. [PMID: 37834154 PMCID: PMC10572784 DOI: 10.3390/ijms241914707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/26/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
Glioblastoma multiforme (GBM) is a highly aggressive malignancy and represents the most common brain tumor in adults. To better understand its biology for new and effective therapies, we examined the role of GDP-mannose pyrophosphorylase B (GMPPB), a key unit of the GDP-mannose pyrophosphorylase (GDP-MP) that catalyzes the formation of GDP-mannose. Impaired GMPPB function will reduce the amount of GDP-mannose available for O-mannosylation. Abnormal O-mannosylation of alpha dystroglycan (α-DG) has been reported to be involved in cancer metastasis and arenavirus entry. Here, we found that GMPPB is highly expressed in a panel of GBM cell lines and clinical samples and that expression of GMPPB is positively correlated with the WHO grade of gliomas. Additionally, expression of GMPPB was negatively correlated with the prognosis of GBM patients. We demonstrate that silencing GMPPB inhibits the proliferation, migration, and invasion of GBM cells both in vitro and in vivo and that overexpression of GMPPB exhibits the opposite effects. Consequently, targeting GMPPB in GBM cells results in impaired GBM tumor growth and invasion. Finally, we identify that the Hippo/MMP3 axis is essential for GMPPB-promoted GBM aggressiveness. These findings indicate that GMPPB represents a potential novel target for GBM treatment.
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Affiliation(s)
- Zi-Lu Huang
- State Key Laboratory of Oncology in Southern China, Department of Radiation Oncology, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China or (Z.-L.H.); (P.F.); (Y.W.); (S.-H.Z.); (Y.-J.H.); (X.X.); (Y.L.)
- Program of Precision Medicine PDOX Modeling of Pediatric Tumors, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL 60611, USA; (A.S.A.); (M.S.)
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Aalaa Sanad Abdallah
- Program of Precision Medicine PDOX Modeling of Pediatric Tumors, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL 60611, USA; (A.S.A.); (M.S.)
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Guang-Xin Shen
- Foshan Clinical Medical School of Guangzhou University of Chinese Medicine, Guangzhou 528031, China;
| | - Milagros Suarez
- Program of Precision Medicine PDOX Modeling of Pediatric Tumors, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL 60611, USA; (A.S.A.); (M.S.)
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Ping Feng
- State Key Laboratory of Oncology in Southern China, Department of Radiation Oncology, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China or (Z.-L.H.); (P.F.); (Y.W.); (S.-H.Z.); (Y.-J.H.); (X.X.); (Y.L.)
| | - Yan-Jiao Yu
- State Key Laboratory of Oncology in Southern China, Department of Neurosurgery/Neuro-Oncology, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China; (Y.-J.Y.); (Z.-P.C.)
| | - Ying Wang
- State Key Laboratory of Oncology in Southern China, Department of Radiation Oncology, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China or (Z.-L.H.); (P.F.); (Y.W.); (S.-H.Z.); (Y.-J.H.); (X.X.); (Y.L.)
| | - Shuo-Han Zheng
- State Key Laboratory of Oncology in Southern China, Department of Radiation Oncology, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China or (Z.-L.H.); (P.F.); (Y.W.); (S.-H.Z.); (Y.-J.H.); (X.X.); (Y.L.)
| | - Yu-Jun Hu
- State Key Laboratory of Oncology in Southern China, Department of Radiation Oncology, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China or (Z.-L.H.); (P.F.); (Y.W.); (S.-H.Z.); (Y.-J.H.); (X.X.); (Y.L.)
| | - Xiang Xiao
- State Key Laboratory of Oncology in Southern China, Department of Radiation Oncology, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China or (Z.-L.H.); (P.F.); (Y.W.); (S.-H.Z.); (Y.-J.H.); (X.X.); (Y.L.)
| | - Ya Liu
- State Key Laboratory of Oncology in Southern China, Department of Radiation Oncology, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China or (Z.-L.H.); (P.F.); (Y.W.); (S.-H.Z.); (Y.-J.H.); (X.X.); (Y.L.)
| | - Song-Ran Liu
- State Key Laboratory of Oncology in Southern China, Department of Pathology, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China;
| | - Zhong-Ping Chen
- State Key Laboratory of Oncology in Southern China, Department of Neurosurgery/Neuro-Oncology, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China; (Y.-J.Y.); (Z.-P.C.)
| | - Xiao-Nan Li
- Program of Precision Medicine PDOX Modeling of Pediatric Tumors, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL 60611, USA; (A.S.A.); (M.S.)
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Yun-Fei Xia
- State Key Laboratory of Oncology in Southern China, Department of Radiation Oncology, Sun Yat-Sen University Cancer Center, Guangzhou 510060, China or (Z.-L.H.); (P.F.); (Y.W.); (S.-H.Z.); (Y.-J.H.); (X.X.); (Y.L.)
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Zhang H, Du Y, Qi L, Xiao S, Braun FK, Kogiso M, Huang Y, Huang F, Abdallah A, Suarez M, Karthick S, Ahmed NM, Salsman VS, Baxter PA, Su JM, Brat DJ, Hellenbeck PL, Teo WY, Patel AJ, Li XN. Targeting GBM with an Oncolytic Picornavirus SVV-001 alone and in combination with fractionated Radiation in a Novel Panel of Orthotopic PDX models. J Transl Med 2023; 21:444. [PMID: 37415222 PMCID: PMC10324131 DOI: 10.1186/s12967-023-04237-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/30/2023] [Indexed: 07/08/2023] Open
Abstract
BACKGROUND Animal models representing different molecular subtypes of glioblastoma multiforme (GBM) is desired for developing new therapies. SVV-001 is an oncolytic virus selectively targeting cancer cells. It's capacity of passing through the blood brain barrier makes is an attractive novel approach for GBM. MATERIALS AND METHODS 23 patient tumor samples were implanted into the brains of NOD/SCID mice (1 × 105 cells/mouse). Tumor histology, gene expression (RNAseq), and growth rate of the developed patient-derived orthotopic xenograft (PDOX) models were compared with the originating patient tumors during serial subtransplantations. Anti-tumor activities of SVV-001 were examined in vivo; and therapeutic efficacy validated in vivo via single i.v. injection (1 × 1011 viral particle) with or without fractionated (2 Gy/day x 5 days) radiation followed by analysis of animal survival times, viral infection, and DNA damage. RESULTS PDOX formation was confirmed in 17/23 (73.9%) GBMs while maintaining key histopathological features and diffuse invasion of the patient tumors. Using differentially expressed genes, we subclassified PDOX models into proneural, classic and mesenchymal groups. Animal survival times were inversely correlated with the implanted tumor cells. SVV-001 was active in vitro by killing primary monolayer culture (4/13 models), 3D neurospheres (7/13 models) and glioma stem cells. In 2/2 models, SVV-001 infected PDOX cells in vivo without harming normal brain cells and significantly prolonged survival times in 2/2 models. When combined with radiation, SVV-001 enhanced DNA damages and further prolonged animal survival times. CONCLUSION A panel of 17 clinically relevant and molecularly annotated PDOX modes of GBM is developed, and SVV-001 exhibited strong anti-tumor activities in vitro and in vivo.
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Affiliation(s)
- Huiyuan Zhang
- Texas Children's Cancer Center, Houston, TX, USA
- Laboratory of Molecular Neuro-Oncology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Yuchen Du
- Texas Children's Cancer Center, Houston, TX, USA
- Laboratory of Molecular Neuro-Oncology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, 77030, USA
- Department of Pediatrics, Ann & Robert H. Lurie Children's Hospital of Chicago, Lurie Children's Hospital of Chicago, Chicago, IL, 60611, USA
- Department of Pharmacology, School of Medicine, Sun Yat-sen University, Guangzhou, 510080, Guangdong, China
| | - Lin Qi
- Texas Children's Cancer Center, Houston, TX, USA
- Laboratory of Molecular Neuro-Oncology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, 77030, USA
- Department of Pediatrics, Ann & Robert H. Lurie Children's Hospital of Chicago, Lurie Children's Hospital of Chicago, Chicago, IL, 60611, USA
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Sophie Xiao
- Department of Pediatrics, Ann & Robert H. Lurie Children's Hospital of Chicago, Lurie Children's Hospital of Chicago, Chicago, IL, 60611, USA
| | - Frank K Braun
- Texas Children's Cancer Center, Houston, TX, USA
- Laboratory of Molecular Neuro-Oncology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Mari Kogiso
- Texas Children's Cancer Center, Houston, TX, USA
- Laboratory of Molecular Neuro-Oncology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Yulun Huang
- Texas Children's Cancer Center, Houston, TX, USA
- Laboratory of Molecular Neuro-Oncology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, 77030, USA
- Department of Neurosurgery, Dushou Lake Hospital, Soochow University Medical School, Suzhou, Jiangsu, China
| | - Frank Huang
- Division of Experimental Hematology and Cancer Biology, Brain Tumor Center, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, 45229, USA
| | - Aalaa Abdallah
- Department of Pediatrics, Ann & Robert H. Lurie Children's Hospital of Chicago, Lurie Children's Hospital of Chicago, Chicago, IL, 60611, USA
| | - Milagros Suarez
- Department of Pediatrics, Ann & Robert H. Lurie Children's Hospital of Chicago, Lurie Children's Hospital of Chicago, Chicago, IL, 60611, USA
| | - Sekar Karthick
- Pediatric Brain Tumor Research Office, Cancer and Stem Cell Biology Program, SingHealth Duke-NUS Academic Medical Center, Humphrey Oei Institute of Cancer Research, National Cancer Center Singapore, Duke-NUS Medical School, 169610, Singapore, Singapore
| | | | | | - Patricia A Baxter
- Texas Children's Cancer Center, Houston, TX, USA
- Laboratory of Molecular Neuro-Oncology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Jack M Su
- Texas Children's Cancer Center, Houston, TX, USA
- Laboratory of Molecular Neuro-Oncology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Daniel J Brat
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | | | - Wan-Yee Teo
- Texas Children's Cancer Center, Houston, TX, USA
- Pediatric Brain Tumor Research Office, Cancer and Stem Cell Biology Program, SingHealth Duke-NUS Academic Medical Center, Humphrey Oei Institute of Cancer Research, National Cancer Center Singapore, Duke-NUS Medical School, 169610, Singapore, Singapore
| | - Akash J Patel
- Department of Neurosurgery, Baylor College of Medicine, Houston, TX, USA.
- Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA.
- Department of Otolaryngology-Head and Neck Surgery, Baylor College of Medicine, Houston, TX, USA.
- Dan Duncan Cancer Center, Baylor College of Medicine, Houston, TX, USA.
| | - Xiao-Nan Li
- Texas Children's Cancer Center, Houston, TX, USA.
- Laboratory of Molecular Neuro-Oncology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, 77030, USA.
- Department of Pediatrics, Ann & Robert H. Lurie Children's Hospital of Chicago, Lurie Children's Hospital of Chicago, Chicago, IL, 60611, USA.
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL, 60611, USA.
- Program of Precision Medicine PDOX Modeling of Pediatric Tumors, Department of Pediatrics, Ann & Robert H. Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA.
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Hameed N, Zeghdoudi T, Guichardaz B, Mezeghrane A, Suarez M, Courjal N, Bernal MP, Belkhir A, Baida FI. Stand-alone optical spinning tweezers with tunable rotation frequency. Opt Express 2023; 31:4379-4392. [PMID: 36785408 DOI: 10.1364/oe.480961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 01/08/2023] [Indexed: 06/18/2023]
Abstract
Advances in optical trapping design principles have led to tremendous progress in manipulating nanoparticles (NPs) with diverse functionalities in different environments using bulky systems. However, efficient control and manipulation of NPs in harsh environments require a careful design of contactless optical tweezers. Here, we propose a simple design of a fibered optical probe allowing the trapping of dielectric NP as well as a transfer of the angular momentum of light to the NP inducing its mechanical rotation. A polarization conversion from linearly-polarized incident guided to circularly transmitted beam is provoked geometrically by breaking the cylindrical symmetry of a coaxial nano-aperture that is engraved at the apex of a tapered metal coated optical fiber. Numerical simulations show that this simple geometry tip allows powerful light transmission together with efficient polarization conversion. This guarantees very stable trapping of quasi spherical NPs in a non-contact regime as well as potentially very tunable and reversible rotation frequencies in both directions (up to 45 Hz in water and 5.3 MHz in air for 10 mW injected power in the fiber). This type of fiber probe opens the way to a new generation of miniaturized tools for total manipulation (trapping, sorting, spinning) of NPs.
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Valdivia G, Alonso-Diez A, Suarez M, García P, Alonso-Miguel D, Affolter V, LaDouceur E, Perez-Alenza M, Peña L. First Description of Canine Benign Mammary Lymph Node Inclusions: A Diagnostic Challenge for Pathologists. J Comp Pathol 2022. [DOI: 10.1016/j.jcpa.2021.11.019] [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: 11/28/2022]
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Reguilón Gallego L, Chen Liang T, Martín Santos T, Salar A, Fernández González M, Celades C, Tomás Navarro J, Martínez A, Andreu R, Balaguer Rosello A, Martín A, Baile M, López Jiménez J, Marquet J, Teruel A, Terol M, Benet C, Frutos L, Navarro J, Uña J, Suarez M, Cortes M, Contreras J, Ruiz C, Tamayo P, Mucientes J, Sopena Novales P, Sánchez Blanco J, Pérez Ceballos E, Jeréz Cayuela A, Ortuño F. THE ROLE OF FDG‐PET/CT AND BONE MARROW BIOPSY IN DETECTING BONE MARROW INVOLVEMENT IN THE INITIAL STAGING OF FOLLICULAR LYMPHOMA: AN ANALYSIS OF ACCURACY AND PROGNOSTIC IMPACT. Hematol Oncol 2021. [DOI: 10.1002/hon.34_2880] [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: 11/06/2022]
Affiliation(s)
- L. Reguilón Gallego
- Hospital Morales Meseguer IMIB‐Arrixaca, Servicio de Hematología y Oncología Médica Murcia Spain
| | - T. Chen Liang
- Hospital Morales Meseguer IMIB‐Arrixaca, Servicio de Hematología y Oncología Médica Murcia Spain
| | - T. Martín Santos
- Hospital Universitario de Canarias Servicio de Hematología, La Laguna Tenerife Spain
| | - A. Salar
- Hospital del Mar Servicio de Hematología Barcelona Spain
| | - M. Fernández González
- Hospital Universitario de Canarias Servicio de Hematología, La Laguna Tenerife Spain
| | - C. Celades
- Josep Carreras Leukaemia Research Institute (IJC) Servicio de Hematología Badalona Spain
| | - J. Tomás Navarro
- ICO‐H. Germans Trias i Pujol Servicio de Hematología Badalona Spain
| | - A.‐B. Martínez
- Hospital Santa Lucía Servicio de Hematología Cartagena Spain
| | - R. Andreu
- Hospital La Fe Servicio de Hematología Valencia Spain
| | | | - A. Martín
- Hospital Clínico Universitario de Salamanca Servicio de Hematología Salamanca Spain
| | - M. Baile
- Hospital Clínico Universitario de Salamanca Servicio de Hematología Salamanca Spain
| | | | - J. Marquet
- Hospital Ramón y Cajal Servicio de Hematología Madrid Spain
| | - A.‐I. Teruel
- Hospital Clinico de Valencia Servicio de Hematología Valencia Spain
| | - M.‐J. Terol
- Hospital Clinico de Valencia Servicio de Hematología Valencia Spain
| | - C. Benet
- Hospital Arnau de Villanova Servicio de Hematología Valencia Spain
| | - L. Frutos
- Hospital Virgen de la Arrixaca Servicio de Medicina Nuclear Murcia Spain
| | - J.‐L. Navarro
- Hospital Virgen de la Arrixaca Servicio de Medicina Nuclear Murcia Spain
| | - J. Uña
- Hospital Universitario Nuestra Señora de la Candelaria Servicio de Medicina Nuclear Tenerife Spain
| | - M. Suarez
- Hospital del Mar Servicio de Medicina Nuclear Barcelona Spain
| | - M. Cortes
- Hospital Universitari de Bellvitge‐IDIBELL Servicio de Medicina Nuclear Barcelona Spain
| | - J. Contreras
- Hospital Santa Lucia Servicio de Medicina Nuclear Cartagena Spain
| | - C. Ruiz
- Hospital La Fe Servicio de Medicina Nuclear Valencia Spain
| | - P. Tamayo
- Hospital Clínico Universitario de Salamanca/IBSAL Servicio de Medicina Nuclear Salamanca Spain
| | - J. Mucientes
- Hospital Puerta de Hierro Servicio de Medicina Nuclear Madrid Spain
| | | | - J.‐J. Sánchez Blanco
- Hospital Morales Meseguer IMIB‐Arrixaca, Servicio de Hematología y Oncología Médica Murcia Spain
| | - E. Pérez Ceballos
- Hospital Morales Meseguer IMIB‐Arrixaca, Servicio de Hematología y Oncología Médica Murcia Spain
| | - A. Jeréz Cayuela
- Hospital Morales Meseguer IMIB‐Arrixaca, Servicio de Hematología y Oncología Médica Murcia Spain
| | - F. Ortuño
- Hospital Morales Meseguer IMIB‐Arrixaca, Servicio de Hematología y Oncología Médica Murcia Spain
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Sánchez-Romero C, Pereira-Prado V, Sicco E, Suarez M, Tapia-Repetto G, Carreón-Burciaga R, Gónzalez-Gónzalez R, Villarroel-Dorrego M, Meleti M, Molina-Frechero N, Bologna-Molina R. Expression of caveolin-1 in tooth germ, ameloblastoma and ameloblastic carcinoma. Med Oral Patol Oral Cir Bucal 2021; 26:e238-e245. [PMID: 33037799 PMCID: PMC7980299 DOI: 10.4317/medoral.24151] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 09/03/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The caveolin-1 protein (structural component of membrane caveolae) plays important roles in several biological functions, such as endocytosis, cell adhesion, and cell signaling. However, this protein has been associated with mechanisms of tumorigenesis in several neoplasms. The expression patterns and roles of caveolin-1 in the oral epithelium and in embryonic and odontogenic tumor tissues are still unclear. MATERIAL AND METHODS The expression of caveolin-1 was evaluated in samples of the normal gingival epithelium (n=7), human tooth germ (TG) (n=12), ameloblastoma (AM) (n=83), and ameloblastic carcinoma (AC) (n=9) by immunohistochemistry. Additionally, AM samples were analyzed by qRT-PCR and Western blot. RESULTS Most TG (91.7%), AM (73.5%) and AC (100%) samples showed diverse patterns of immunohistochemical positivity for caveolin-1, while only one gingival sample was positive. The transcript levels of cav-1 were significantly upregulated by 14.9-fold in AM tissue (P = 0.0014) compared to those in normal gingival epithelial tissue, as shown by qRT-PCR. Presence of caveolin-1 protein was confirmed by Western blot analysis. The caveolin-1 immunoexpression patterns throughout the stages of TG show its importance during odontogenesis. CONCLUSIONS The overexpression of caveolin-1 in AM and AC compared to its expression in normal gingival epithelium (adult tissue) suggests a possible role of caveolin-1 in protumoral events, but due to the similar immunoexpression observed in AM and AC, caveolin-1 may not necessarily participate in the malignant transformation process. However, future studies are needed to clarify and confirm these hypotheses.
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Affiliation(s)
- C Sánchez-Romero
- Molecular Pathology Area, Faculty of Dentistry University of the Republic, Uruguay
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McCarter S, Gehrking T, St. Louis E, Suarez M, Boeve B, Silber M, Low P, Singer W. 0787 Autonomic Dysfunction and Phenoconversion in Idiopathic/Isolated REM Sleep Behavior Disorder. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.783] [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: 11/12/2022] Open
Abstract
Abstract
Introduction
REM-sleep behavior disorder (RBD) is a common finding among patients with synucleinopathies. We aimed to determine the degree of autonomic dysfunction in patients presenting with idiopathic RBD (iRBD), and the predictive value of autonomic dysfunction for phenoconversion to a defined neurodegenerative disease.
Methods
We searched our electronic medical record for patients diagnosed with iRBD who also underwent standardized autonomic function testing within 6 months of iRBD diagnosis, and who had clinical follow-up of at least 3 years following iRBD diagnosis. Patients who received a diagnosis of phenoconversion within 3 months of autonomic testing were excluded. The composite autonomic severity score (CASS) was derived and compared between phenoconverters and non-converters using chi-square and Wilcoxon rank-sum tests.
Results
We identified 18 patients who fulfilled in- and exclusion criteria. Average age at autonomic testing was 67 ± 6.6 years. Twelve (67%) patients phenoconverted during the follow-up period; 6 developed PD, the other 6 DLB. Fifteen (83%) patients had at least mild autonomic dysfunction. There were no significant differences between overall converters and non-converters in total CASS or CASS subscores. However, iRBD patients who developed DLB had significantly higher total and cardiovagal CASS scores compared with those who developed PD (p <0.05), and a trend for higher adrenergic CASS scores compared to those who developed PD and those who did not phenoconvert (p=0.08 for each).
Conclusion
Autonomic dysfunction was seen in 83% of iRBD patients, and more severe baseline cardiovagal and adrenergic autonomic dysfunction in iRBD was associated with phenoconversion to DLB but not PD. Prospective studies are needed to confirm the value of autonomic testing for predicting phenoconversion and disease phenotype in iRBD.
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Affiliation(s)
- S McCarter
- Department of Neurology, Mayo Clinic, Rochester, MN
| | - T Gehrking
- Department of Neurology, Mayo Clinic, Rochester, MN
| | - E St. Louis
- Department of Neurology and Sleep Medicine, Mayo Clinic, Rochester, MN
| | - M Suarez
- Department of Neurology, Mayo Clinic, Rochester, MN
| | - B Boeve
- Department of Neurology and Sleep Medicine, Mayo Clinic, Rochester, MN
| | - M Silber
- Department of Neurology and Sleep Medicine, Mayo Clinic, Rochester, MN
| | - P Low
- Department of Neurology, Mayo Clinic, Rochester, MN
| | - W Singer
- Department of Neurology, Mayo Clinic, Rochester, MN
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Hart A, Bonner G, Suarez M, Roberson T, Burke L, Steffen A. FINDINGS FROM AN END-OF-LIFE EDUCATION INTERVENTION FOR AFRICAN AMERICAN CAREGIVERS OF RELATIVES WITH DEMENTIA. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1558] [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: 11/14/2022] Open
Affiliation(s)
- A Hart
- University of Illinois at Chicago
| | - G Bonner
- University of Illinois at Chicago
| | - M Suarez
- University of Illinois at Chicago
| | | | - L Burke
- University of Illinois at Chicago
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11
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Sousa A, Pérez-Rodríguez MT, Suarez M, Val N, Martínez-Lamas L, Nodar A, Crespo M. Validation of a clinical decision tree to predict if a patient has a bacteraemia due to a β-lactamase producing organism. Infect Dis (Lond) 2018; 51:32-37. [PMID: 30371118 DOI: 10.1080/23744235.2018.1508883] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
BACKGROUND In recent years, several scores and algorithms have been developed in order to guide empirical antibiotic treatment in patients with gram-negative bacilli (GNB) bacteraemia according to the risk of extended-spectrum β-lactamase (BL) producing. Some of these algorithms do not have easy applicability or present some limitations in their validation. The aim of our study was to validate a recently designed decision tree in our prospective cohort of bacteraemia due to gram-negative bacilli. METHODS We prospectively identified and analyzed all bacteraemia due to gram-negative bacilli in adult patients in our centre between January 2015 and December 2016. Previously developed clinical decision tree was used to classify patients in each of the terminal nodes. Patients were classified as BL group according to whether they were producers of any type of BL. The statistical power of the tree was analyzed by receiver operating characteristics (ROC) curve and by calculation of C-statistics. RESULTS A total of 448 episodes of bacteraemia were included; 132 (29.5%) were BL group; 68 (15.1%) ESBL producing, 43 (9.6%) due to AmpC and 21 (4.7%) isolates of Pseudomonas aeruginosa. The original clinical decision tree was modified according to the results of our multivariate analysis. The modified tree has a sensitivity of 71%, specificity of 92%, predictive positive value (PPV) of 79% and predictive negative value (NPV) of 88% generating an ROC curve with a C-statistic of 0.76. CONCLUSIONS An easy-to-apply clinical decision tree could be used at the exact moment of diagnosis and adjust the empirical antibiotic treatment in patients with gram-negative bacilli bacteraemia.
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Affiliation(s)
- Adrian Sousa
- a Infectious Diseases Unit-Internal Medicine Department , Hospital Álvaro Cunqueiro, Complejo Hospitalario Universitario de Vigo , Vigo , Spain
| | - María Teresa Pérez-Rodríguez
- a Infectious Diseases Unit-Internal Medicine Department , Hospital Álvaro Cunqueiro, Complejo Hospitalario Universitario de Vigo , Vigo , Spain
| | - Milagros Suarez
- a Infectious Diseases Unit-Internal Medicine Department , Hospital Álvaro Cunqueiro, Complejo Hospitalario Universitario de Vigo , Vigo , Spain
| | - Nuria Val
- a Infectious Diseases Unit-Internal Medicine Department , Hospital Álvaro Cunqueiro, Complejo Hospitalario Universitario de Vigo , Vigo , Spain
| | - Lucia Martínez-Lamas
- b Infectious Diseases Unit-Microbiology Department , Hospital Álvaro Cunqueiro, Complejo Hospitalario Universitario de Vigo , Vigo , Spain
| | - Andrés Nodar
- a Infectious Diseases Unit-Internal Medicine Department , Hospital Álvaro Cunqueiro, Complejo Hospitalario Universitario de Vigo , Vigo , Spain
| | - Manuel Crespo
- a Infectious Diseases Unit-Internal Medicine Department , Hospital Álvaro Cunqueiro, Complejo Hospitalario Universitario de Vigo , Vigo , Spain
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Rubio IT, Rodriguez R, Esgueva-Colmenarejo A, Suarez M, Espinosa-Bravo M, Siso C, Cordoba O, Alvarado S, Volders J, Van Den Tol P. Abstract P5-22-10: Intraoperative ultrasound guided surgery after neoadjuvant treatment in breast cancer improves patient´s quality of life. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p5-22-10] [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: Intraoperative ultrasound guided surgery (IOUS) has shown not only to improve surgical outcomes by achieving higher rates of negative margins and reducing the need for re-excisions, but also showing better cosmetic results and patient's satisfaction in the adjuvant setting. After neoadjuvant treatments (NAT) we have shown that IOUS lowers the volume of resection in patients with pathologic complete response or minimal microscopic disease after NAT without compromising margins and local recurrences when compared to wire localization techniques (WL) The aim of this study was to determine if IOUS after NAT contributes to improve cosmetic outcomes and quality of life (QOL) when compared with WL.
Material and Methods. The pilot study enrolled patients treated with NAT who underwent breast-conserving surgery (BCS) between July 2008 and December 2012. On the follow up visit, cosmetic outcomes were assessed by the patient and surgeon on a 4 point Likert scale, by the Breast Cancer Conservative Treatment cosmetic results (BCCT.core) software, and by an independent panel. QOL was assessed using cancer-specific (EORTC QLQ-C30 and EORTC QLQ-B23) questionnaires.
Results. The study investigated 113 patients: 81 (71.6 %) in the IOUS group and 32 (28.3 %) in the WL group. The patient and tumor characteristics were comparable between the two groups. Mean follow up was 64 months (range, 12-90) in the WL group while 41 months (range, 18-107) in the IOUS group.
Cosmetic outcomes reported by the patient showed a tendency (p=0.07) for better results in the IOUS group. Patient reported cosmetic outcomes and the independent panel cosmetic evaluation significantly correlated with lumpectomy volume excised (p= 0.04, p = 0.02 respectively). The BCCT.core did not correlate with volume of tissue excised (p < 0.14). IOUS achieved better cosmetic outcomes compared to WL, with excellent outcomes of 30% and 19% respectively, although poor cosmetic outcomes were 3% and 0% respectively. Correlation between patients and surgeons evaluation regarding cosmetic outcomes and satisfaction was low (0.38 and 0.40 respectively). A comparison of the QOL scores of 113 patients showed a significantly better global health status (p = 0.03), better emotional and role function (p = 0.004), for patients with IOUS compared to WL patients.
Conclusions. This is the first study to show that breast volume excised significantly correlates with cosmetic outcomes in the neoadjuvant setting. These results suggest that IOUS after NAT contributes to a better quality of life and may influence cosmetic outcomes in breast cancer patients. Patient reported outcomes should be included in the quality assessment in breast surgery as the correlation with surgeons' evaluation is low.
Citation Format: Rubio IT, Rodriguez R, Esgueva-Colmenarejo A, Suarez M, Espinosa-Bravo M, Siso C, Cordoba O, Alvarado S, Volders J, Van Den Tol P. Intraoperative ultrasound guided surgery after neoadjuvant treatment in breast cancer improves patient´s quality of life [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P5-22-10.
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Affiliation(s)
- IT Rubio
- Hospital Univeristario VAll d¨Hebron, Barcelona, Spain; VU University Medical Center, Amsterdam, Netherlands
| | - R Rodriguez
- Hospital Univeristario VAll d¨Hebron, Barcelona, Spain; VU University Medical Center, Amsterdam, Netherlands
| | - A Esgueva-Colmenarejo
- Hospital Univeristario VAll d¨Hebron, Barcelona, Spain; VU University Medical Center, Amsterdam, Netherlands
| | - M Suarez
- Hospital Univeristario VAll d¨Hebron, Barcelona, Spain; VU University Medical Center, Amsterdam, Netherlands
| | - M Espinosa-Bravo
- Hospital Univeristario VAll d¨Hebron, Barcelona, Spain; VU University Medical Center, Amsterdam, Netherlands
| | - C Siso
- Hospital Univeristario VAll d¨Hebron, Barcelona, Spain; VU University Medical Center, Amsterdam, Netherlands
| | - O Cordoba
- Hospital Univeristario VAll d¨Hebron, Barcelona, Spain; VU University Medical Center, Amsterdam, Netherlands
| | - S Alvarado
- Hospital Univeristario VAll d¨Hebron, Barcelona, Spain; VU University Medical Center, Amsterdam, Netherlands
| | - J Volders
- Hospital Univeristario VAll d¨Hebron, Barcelona, Spain; VU University Medical Center, Amsterdam, Netherlands
| | - P Van Den Tol
- Hospital Univeristario VAll d¨Hebron, Barcelona, Spain; VU University Medical Center, Amsterdam, Netherlands
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Castro-Grattoni A, Torres M, Suarez M, Buvé RA, Girón C, Martinez A, Almendros I, Ramon F, Montserrat J, Dalmases M, Gozal D, Barbé F, Sánchez-de-la-Torre M. Impact of intermittent hypoxia on cardiovascular remodeling in a murine model of sleep apnea: effect of age. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Paola S, Avalos A, Maidana L, Suarez M, Marecos E, Oreggioni G. CORRELATION OF THE MORPHOMETRIC CHANGES IN KIDNEY AND BONE MARROW IN DOGS NATURALLY INFECTED WITH Leishmania sp. Compend cienc vet 2016. [DOI: 10.18004/compend.cienc.vet.2016.06.01.11-16] [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] Open
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15
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Amarilla S, Avalos A, Suarez M, Marecos E, González E. PORCINE REPRODUCTIVE AND RESPIRATORY SYNDROME (PRRS): EPIDEMIOLOGY, SYMPTOMS AND LESIONS. Compend cienc vet 2016. [DOI: 10.18004/compend.cienc.vet.2015.05.02.38-46] [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: 10/21/2022] Open
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16
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Dahdouh E, Orgaz B, Gómez-Gil R, Mingorance J, Daoud Z, Suarez M, San Jose C. Patterns of biofilm structure and formation kinetics among Acinetobacter baumannii clinical isolates with different antibiotic resistance profiles. Med Chem Commun 2016. [DOI: 10.1039/c5md00377f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study evaluates the rates of biofilm formation in light of the different characteristics of twelve A. baumannii clinical isolates.
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Affiliation(s)
- E. Dahdouh
- Faculty of Veterinary
- Department of Animal Health
- University Complutense of Madrid
- Madrid
- Spain
| | - B. Orgaz
- Faculty of Veterinary
- Department of Food Science and Technology
- University Complutense of Madrid
- Madrid
- Spain
| | - R. Gómez-Gil
- Servicio de Microbiología
- Hospital Universitario La Paz
- IdiPAZ
- Madrid
- Spain
| | - J. Mingorance
- Servicio de Microbiología
- Hospital Universitario La Paz
- IdiPAZ
- Madrid
- Spain
| | - Z. Daoud
- Faculty of Medicine and Medical Sciences
- Department of Clinical Microbiology
- University of Balamand
- Amioun
- Lebanon
| | - M. Suarez
- Faculty of Veterinary
- Department of Animal Health
- University Complutense of Madrid
- Madrid
- Spain
| | - C. San Jose
- Faculty of Veterinary
- Department of Food Science and Technology
- University Complutense of Madrid
- Madrid
- Spain
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Montserrat-Capella D, Suarez M, Ortiz L, Mira JJ, Duarte HG, Reveiz L, on behalf of the AMBEAS Group, Cho M, Rodriguez H, Milberg M, Dieguez MG, Tristan M, Granados R, Puertas B, Artaza O, Varella DAA, FitzGerald J, Torres FH, Iglesias C, Garcia LHL, da Silva Lima R, Munoz S, Oliveira DC, Valdes MYR, Sagastuy B, Varela JS, de Sousa FC, Souza F, Torres R. Frequency of ambulatory care adverse events in Latin American countries: the AMBEAS/PAHO cohort study. Int J Qual Health Care 2015; 27:52-9. [DOI: 10.1093/intqhc/mzu100] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Sola R, Valls R, Farras M, Suarez M, Fernandez-Castillejo S, Fito M, Konstantinidou V, Pedret A, Fuentes F, Lopez-Miranda J, Giralt M, Covas M, Motilva M. Functional olive oils functions. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2014.05.750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Geller T, Prakash V, Batanian J, Guzman M, Duncavage E, Gershon T, Crowther A, Wu J, Liu H, Fang F, Davis I, Tripolitsioti D, Ma M, Kumar K, Grahlert J, Egli K, Fiaschetti G, Shalaby T, Grotzer M, Baumgartner M, Braoudaki M, Lambrou GI, Giannikou K, Millionis V, Papadodima SA, Settas N, Sfakianos G, Stefanaki K, Kattamis A, Spiliopoulou CA, Tzortzatou-Stathopoulou F, Kanavakis E, Gholamin S, Mitra S, Feroze A, Zhang M, Esparza R, Kahn S, Richard C, Achrol A, Volkmer A, Liu J, Volkmer J, Majeti R, Weissman I, Cheshier S, Bhatia K, Brown N, Teague J, Lo P, Challis J, Beshay V, Sullivan M, Mechinaud F, Hansford J, Arifin MZ, Dahlan RH, Sobana M, Saputra P, Tisell MT, Danielsson A, Caren H, Bhardwaj R, Chakravadhanula M, Hampton C, Ozals V, Georges J, Decker W, Kodibagkar V, Nguyen A, Legrain M, Gaub MP, Pencreach E, Chenard MP, Guenot D, Entz-Werle N, Kanemura Y, Ichimura K, Shofuda T, Nishikawa R, Yamasaki M, Shibui S, Arai H, Xia J, Brian A, Prins R, Pennell C, Moertel C, Olin M, Bie L, Zhang X, Liu H, Olsson M, Kling T, Nelander S, Biassoni V, Bongarzone I, Verderio P, Massimino M, Magni R, Pizzamiglio S, Ciniselli C, Taverna E, De Bortoli M, Luchini A, Liotta L, Barzano E, Spreafico F, Visse E, Sanden E, Darabi A, Siesjo P, Jackson S, Cohen K, Lin D, Burger P, Rodriguez F, Yao X, Liucheng R, Qin L, Na T, Meilin W, Zhengdong Z, Yongjun F, Pfeifer S, Nister M, de Stahl TD, Basmaci E, Orphanidou-Vlachou E, Brundler MA, Sun Y, Davies N, Wilson M, Pan X, Arvanitis T, Grundy R, Peet A, Eden C, Ju B, Phoenix T, Nimmervoll B, Tong Y, Ellison D, Lessman C, Taylor M, Gilbertson R, Folgiero V, del Bufalo F, Carai A, Cefalo MG, Citti A, Rutella S, Locatelli F, Mastronuzzi A, Maher O, Khatua S, Zaky W, Lourdusamy A, Meijer L, Layfield R, Grundy R, Jones DTW, Capper D, Sill M, Hovestadt V, Schweizer L, Lichter P, Zagzag D, Karajannis MA, Aldape KD, Korshunov A, von Deimling A, Pfister S, Chakrabarty A, Feltbower R, Sheridon E, Hassan H, Shires M, Picton S, Hatziagapiou K, Braoudaki M, Lambrou GI, Tsorteki F, Tzortzatou-Stathopoulou F, Bethanis K, Gemou-Engesaeth V, Chi SN, Bandopadhayay P, Janeway K, Pinches N, Malkin H, Kieran MW, Manley PE, Green A, Goumnerova L, Ramkissoon S, Harris MH, Ligon KL, Kahlert U, Suarez M, Maciaczyk J, Bar E, Eberhart C, Kenchappa R, Krishnan N, Forsyth P, McKenzie B, Pisklakova A, McFadden G, Kenchappa R, Forsyth P, Pan W, Rodriguez L, Glod J, Levy JM, Thompson J, Griesinger A, Amani V, Donson A, Birks D, Morgan M, Handler M, Foreman N, Thorburn A, Lulla RR, Laskowski J, Fangusaro J, DiPatri AJ, Alden T, Tomita T, Vanin EF, Goldman S, Soares MB, Remke M, Ramaswamy V, Wang X, Jorgensen F, Morrissy AS, Marra M, Packer R, Bouffet E, Pfister S, Jabado N, Taylor M, Cole B, Rudzinski E, Anderson M, Bloom K, Lee A, Leary S, Leprivier G, Remke M, Rotblat B, Agnihotri S, Kool M, Derry B, Pfister S, Taylor MD, Sorensen PH, Dobson T, Busschers E, Taylor H, Hatcher R, Fangusaro J, Lulla R, Goldman S, Rajaram V, Das C, Gopalakrishnan V. TUMOUR BIOLOGY. Neuro Oncol 2014; 16:i137-i145. [PMCID: PMC4046298 DOI: 10.1093/neuonc/nou082] [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: 07/22/2023] Open
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Quiñones M, Guerrero L, Suarez M, Pons Z, Aleixandre A, Arola L, Muguerza B. Low-molecular procyanidin rich grape seed extract exerts antihypertensive effect in males spontaneously hypertensive rats. Food Res Int 2013. [DOI: 10.1016/j.foodres.2013.01.023] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Abeyta M, Zhao Q, Gebhardt J, Suarez M, Reddy V, Behr B. The interchangeability of HEPES (4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid) and MOPS (3-(N-morpholino)propanesulfonic acid) based solutions for vitrification and subsequent warming. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.07.326] [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: 10/28/2022]
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Zaninovic N, Rosenwaks Z, Iager AE, Kocabas AM, Otu HH, Ruppel P, Langerveld A, Schnarr P, Suarez M, Jarrett JC, Conaghan J, Rosa GJM, Fernandez E, Rawlins RG, Cibelli JB, Crosby J, Kirkegaard K, Hindkjaer J, Ingerslev HJ, Lykke-Hartmann K, Himaya E, Jamal W, Phillips S, Delrieu D, Hamamah S, Kadoch IJ, Cortezzi SS, Cabral EC, Ferreira CR, Trevisan MG, Figueira RCS, Eberlin MN, Iaconelli A, Borges E, Chimote NM, Chimote NN, Nath NM, Chimote MN, Mehta BN. SESSION 02: EMBRYOLOGY - BIOMARKERS. Hum Reprod 2012. [DOI: 10.1093/humrep/27.s2.2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Dasig J, Zhao J, Reddy V, Gebhardt J, Suarez M, Behr B. Spontaneous Abortion Rates Following Frozen Embryo Transfer: Preliminary Experience Comparing Slow and Vitrified Cryopreservation Methods. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.01.061] [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: 10/28/2022]
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Pawlowska A, Wolfson J, Cheng J, Sorrell A, Sato J, Anderson C, Hitt D, Suarez M, Forman S, Rosenthal J. High Dose Chemotherapy (HDT) with Busulfan, Melphalan and Topotecan Followed by Autologous Hematopoietic Stem Cell Transplantation (ASCT) in Pediatric Patients (pts) with High Risk Solid Tumors. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.135] [Citation(s) in RCA: 2] [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: 11/17/2022]
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Ortiz de Urbina J, Valdivieso A, Matarranz A, Gastaca M, Fernandez J, Bustamante J, Gonzalez J, Ventoso A, Testillano M, Ruiz P, Suarez M. Advagraf De Novo in Liver Transplantation: A Single-Center Experience. Transplant Proc 2011; 43:724-5. [DOI: 10.1016/j.transproceed.2011.01.089] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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de la Fuente L, Suarez M, Belza MJ, Vallejo F, García M, Alvarez R, Castilla J, Rodés A. Human immunodeficiency virus testing uptake and risk behaviours in Spain. J Epidemiol Community Health 2009; 63:552-8. [PMID: 19525249 DOI: 10.1136/jech.2008.076240] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [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: 11/03/2022]
Abstract
BACKGROUND The purpose of this study was to estimate the prevalence of human immunodeficiency (HIV) testing in the general population; to analyse factors related to voluntary testing; and to describe the main reasons for testing, the kinds of health services where testing takes place and the relations between self-risk perception and HIV testing. METHODS A probability sample survey of health and sexual behaviour in men and women aged 18-49 years and resident in Spain in 2003 (n = 10 980) was used. A combination of face-to-face and computer-assisted self-interview was used, and bivariate and multivariate logistic regression analyses were performed. RESULTS Some 39.4% (40.2% in men and 38.5% in women) had ever been tested, blood donation being the main reason for men and pregnancy for women. In the multivariate analysis, HIV testing was associated with foreign nationality, high educational level, having injected drugs and having a large number of sexual partners. In men, it was also associated with age 30-39 years, having had sex with other men and having paid for sex. About 29.3% of men and 32.8% of women had their last voluntary HIV test in primary healthcare centres, whereas only 3.4% of men and 3.6% of women had last been tested in sexually transmitted infection/HIV diagnostic centres. About 20.2% of men and 5.5% of women with risk behaviours had never been tested. CONCLUSION The proportion of men with risk behaviours who have never had an HIV test is unacceptably high in Spain. Scaling up access to HIV testing in this population group remains a challenge for health policies and research.
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Affiliation(s)
- L de la Fuente
- Centro Nacional de Epidemiología, Instituto de Salud Carlos III, Madrid, Spain.
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Martínez-Piñeiro L, Hidalgo L, Suarez M, Picazo M, Pérez Higueras A, San Millán J, Martínez-Piñeiro J. Arterio-kalikale Fistel nach perkutaner Nephrostomie. Aktuelle Urol 2008. [DOI: 10.1055/s-2008-1060489] [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: 10/21/2022]
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Kertzman Z, Marchal J, Suarez M, Staia MH, Filip P, Kohli P, Aouadi SM. Mechanical, tribological, and biocompatibility properties of ZrN-Ag nanocomposite films. J Biomed Mater Res A 2008; 84:1061-7. [PMID: 17685406 DOI: 10.1002/jbm.a.31533] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [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: 11/05/2022]
Abstract
Nanocomposite films of ZrN-Ag were produced by reactive unbalanced magnetron sputtering, and their structural, chemical, mechanical, tribological, haemocompatibility, and antibacterial properties were studied as a function of film composition. The films formed a dense and homogeneous microstructure whereby nanocrystals of Ag are distributed evenly throughout the ZrN matrix. For small additions of silver, the hardness was found to increase, whereas the elastic modulus was found to decrease drastically. In the process of optimizing the deposition conditions, three kinds of coatings were prepared on 316 L surgical steel and tested by accelerated electrochemical polarization tests in order to detect the influence of Ag and the value of the bias potential on the corrosion performance of the system. Films produced under the optimum deposition conditions were, subsequently, deposited on medical grade Ti-Al-V and worn against ball-bearing steel using a ball-on-disk tribotester in bovine serum and were found to have superior tribological properties compared with single-phase ZrN coatings. The haemocompatibility of the films was assessed by investigating the adsorption of human serum albumin and fibrinogen on samples with different phase compositions. Quantification of the protein adsorption was carried out using spectroscopic ellipsometry, which confirmed the haemocompatibility of the films. Antibiotic activity of the films was quantified by incubating the films in bacterial cultures, namely, Staphylococcus epidermis, Staphylococcus aureus, and Escherichia coli. Films with a silver content > 10% exhibited superior antibacterial activity compared with the uncoated samples.
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Affiliation(s)
- Z Kertzman
- Department of Physics, Southern Illinois University, Carbondale, Illinois 62901, USA
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Murthy NV, Passchier J, Gunn R, Searle G, Bullich S, Suarez M, Herance R, Farre M, Herdon H, Porter R, Sutherland S, Fagg R, Neve M, Slifstein M, Laruelle M, Catafau A. [11C]GSK931145: A new pet ligand for glycine transporter 1. Neuroimage 2008. [DOI: 10.1016/j.neuroimage.2008.04.195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Abstract
BACKGROUND A number of recent case reports and case series suggest that proton pump inhibitors may cause acute interstitial nephritis. AIM To establish the nature of the relationship (cause or association) between proton pump inhibitor use and development of interstitial nephritis. DATA COLLECTION Two researchers independently searched electronic databases (MEDLINE, EMBASE, GOOGLE, LILACS, COCHRANE) for articles from 1970 to 2006, including all study designs, populations and languages. Two independent reviewers assessed study quality and collected the data. SELECTION CRITERIA absence of baseline renal failure, development of interstitial nephritis after proton pump inhibitor exposure, nephritis confirmed by creatinine plus either renal biopsy or recurrence upon reinitiating proton pump inhibitor. RESULTS Sixty four cases (60% females, mean age 78 years) of proton pump inhibitor-associated interstitial nephritis were found, 60 included in this review (59 confirmed by renal biopsy, one by recurrence upon reinitiating proton pump inhibitor). The most common symptoms were non-specific. The mean proton pump inhibitor treatment duration before diagnosing nephritis was 13 weeks, average recovery time was 35.5 weeks, one patient required permanent dialysis, there were no deaths. CONCLUSION Proton pump inhibitor-related interstitial nephritis is rare, idiosyncratic and difficult to predict. It requires a high level of clinical suspicion. While there is not sufficient evidence to establish a causal relationship with certainty, there does appear to be a low-prevalence association.
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Affiliation(s)
- F Sierra
- Division of Gastroenterology and Hepatology, Fundación Santa Fe de Bogotá, Bogotá, Colombia
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Montagut C, Tusquets I, Ferrer B, Corominas JM, Bellosillo B, Campas C, Suarez M, Fabregat X, Campo E, Gascon P, Serrano S, Fernandez PL, Rovira A, Albanell J. Activation of nuclear factor-kappa B is linked to resistance to neoadjuvant chemotherapy in breast cancer patients. Endocr Relat Cancer 2006; 13:607-16. [PMID: 16728586 DOI: 10.1677/erc.1.01171] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The nuclear factor (NF)-kappaB system is a promising anticancer target due to its role in oncogenesis and chemoresistance in preclinical models. To provide evidence in a clinical setting on the role of NF-kappaB in breast cancer, we aimed to study the value of basal NF-kappaB/p65 in predicting resistance to neoadjuvant chemotherapy, and to characterise the pharmacodynamic changes in NF-kappaB/p65 expression following chemotherapy in patients with locally advanced breast cancer. Pre- and post-chemotherapy tumour specimens from 51 breast cancer patients treated with anthracycline- and/or taxane-containing neoadjuvant chemotherapy were assayed by immunohistochemistry for NF-kappaB/p65 subcellular expression. We studied NF-kappaB/p65, a well-characterised member of the NF-kappaB family that undergoes nuclear translocation when NF-kappaB is activated. Activation of NF-kappaB (i.e. nuclear NF-kappaB/p65 staining in pre-therapy specimens) was linked to chemoresistance. Patients with NF-kappaB/p65 nuclear staining in pre-treatment samples had a 20% clinical response rate, while patients with undetected nuclear staining had a 91% response rate to chemotherapy (P = 0.002). Notably, four patients achieved a complete histological response and none of them had pre-treatment NF-kappaB/p65 nuclear staining. Moreover, the number of patients with NF-kappaB/p65 activation increased after chemotherapy exposure. It is concluded that NF-kappaB/p65 activation assayed by immunohistochemistry is a predictive factor of resistance to neoadjuvant chemotherapy in breast cancer patients. Moreover, NF-kappaB activation was inducible following chemotherapy in a proportion of breast cancer patients. These novel clinical findings strengthen the rationale for the use of NF-kappaB inhibitors to prevent or overcome chemoresistance in breast cancer.
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Affiliation(s)
- C Montagut
- Medical Oncology Department, Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Hospital Clinic, Barcelona 08035, Spain
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Bosco C, Parra M, Barja P, Rodrigo R, Fernández V, Suarez M, Muñoz H. Increased immunohistochemical expression of thrombomodulin at placental perivascular myofibroblast in severe preeclampsia (PE). Histol Histopathol 2006; 20:1045-55. [PMID: 16136486 DOI: 10.14670/hh-20.1045] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The presence of pro-coagulant and anti-coagulant components of the placental vascular endothelium and syncytiotrophoblast are essential for homeostasis. Vascular endothelium prevents blood clot formation in vivo by involving a cell surface thrombin-binding glycoprotein, thrombomodulin (TM), that activates plasma anti-coagulant protein C. The TM levels increase during pregnancy, but the fibrinolytic capacity diminishes. Since vascular lesions with placental coagulation disorders can be associated with preeclampsia (PE), we hypothesized that TM expression in the stem villous vasculature and syncytiotrophoblast of the placenta are impaired in PE. Plasma and placental tissue samples were collected from PE (n=12) and normotensive pregnant patients (n=11). Patient's gestational age was 35.7+/-1.2 (normotensive) and 30.6+/-1.5 weeks (PE). Blood samples were drawn 30 min before delivery. Serum PAI-1 and PAI-2 antigens were determined by enzyme-linked immunoabsorbent assay (ELISA). A monoclonal antibody specific for TM was used for immunohistochemical tissue staining (ABC) and the staining was quantified by semi quantitative scores. Results show no intensity differences at the apical syncytiotrophoblast between the two groups. However, in preeclamptic placenta, TM expression diminished in the endothelium of the stem villi arteries and increased in the perivascular and stromal myofibroblats in cases of severe PE. TM changes were associated with an increased PAI-1/PAI-2 ratio. It is suggested that in severe PE, the decreased placental blood flow may be due to structural and functional impairment of the endothelium of the stem villi vessels and the surrounding perivascular and stromal myofibroblast, by increasing TM expression which may modulate fetal blow flow in the villous tree.
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Affiliation(s)
- C Bosco
- Anatomy and Development Biology Program, Molecular and Clinical Pharmacology Program and Pathology Program, ICBM Faculty of Medicine, University of Chile, Santiago.
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Bullich S, Ros D, Pavia J, Suarez M, Cot A, Perich J, Catafau A. Neurotransmission SPECT and MR registration combining mutual and gradient information. Neuroimage 2006. [DOI: 10.1016/j.neuroimage.2006.04.080] [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: 10/24/2022] Open
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Ruiz P, Suarez M, Nishida S, de la Cruz V, Nicolas M, Weppler D, Khaled A, Bejarano P, Kato T, Mittal N, Icardi M, Tzakis A. Sclerosing mesenteritis in small bowel transplantation: possible manifestation of acute vascular rejection. Transplant Proc 2004; 35:3057-60. [PMID: 14697979 DOI: 10.1016/j.transproceed.2003.10.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND Acute rejection of human small bowel allografts is characterized by clinical symptoms combined with characteristic morphologic alterations. The typical geographic distribution of acute rejection in the bowel is involvement of the intestinal parenchyma, which can be transmural, particularly when the rejection is more severe. However, little is known concerning the potential for donor-derived soft tissue adjacent to the bowel to become involved by the host alloimmune response. METHODS We describe a male patient who, several weeks after combined small bowel and liver transplantation, demonstrated sclerosing mesenteritis with vasculitis and acute rejection of the bowel. RESULTS The vascular lesions in the mesentery demonstrated increased IgG deposition and the patient developed an alloantibody to the donor. CONCLUSIONS The changes described herein may represent a novel presentation of acute vascular rejection.
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Affiliation(s)
- P Ruiz
- Department of Pathology, University of Miami School of Medicine, J M H Holtz Center #2101, 1611 NW 12th Avenue, Miami, FL 33101, USA.
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Fregene MA, Suarez M, Mkumbira J, Kulembeka H, Ndedya E, Kulaya A, Mitchel S, Gullberg U, Rosling H, Dixon AGO, Dean R, Kresovich S. Simple sequence repeat marker diversity in cassava landraces: genetic diversity and differentiation in an asexually propagated crop. Theor Appl Genet 2003; 107:1083-93. [PMID: 12856084 DOI: 10.1007/s00122-003-1348-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2003] [Accepted: 05/23/2003] [Indexed: 05/18/2023]
Abstract
Cassava (Manihot esculenta) is an allogamous, vegetatively propagated, Neotropical crop that is also widely grown in tropical Africa and Southeast Asia. To elucidate genetic diversity and differentiation in the crop's primary and secondary centers of diversity, and the forces shaping them, SSR marker variation was assessed at 67 loci in 283 accessions of cassava landraces from Africa (Tanzania and Nigeria) and the Neotropics (Brazil, Colombia, Peru, Venezuela, Guatemala, Mexico and Argentina). Average gene diversity (i.e., genetic diversity) was high in all countries, with an average heterozygosity of 0.5358 +/- 0.1184. Although the highest was found in Brazilian and Colombian accessions, genetic diversity in Neotropical and African materials is comparable. Despite the low level of differentiation [F(st)(theta) = 0.091 +/- 0.005] found among country samples, sufficient genetic distance (1-proportion of shared alleles) existed between individual genotypes to separate African from Neotropical accessions and to reveal a more pronounced substructure in the African landraces. Forces shaping differences in allele frequency at SSR loci and possibly counterbalancing successive founder effects involve probably spontaneous recombination, as assessed by parent-offspring relationships, and farmer-selection for adaptation.
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Affiliation(s)
- M A Fregene
- Centro Internacional de Agricultura Tropical, Cali, Colombia.
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Marti´nez-Augustin O, Sanchez de Medina F, Puerta V, Suarez M, Walker A, Sanderson I. Nucleosides inhibit the production of interleukin 8 by Caco 2 cells. Clin Nutr 2003. [DOI: 10.1016/s0261-5614(03)80147-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Suarez M, Entenza JM, Doerries C, Meyer E, Bourquin L, Sutherland J, Marison I, Moreillon P, Mermod N. Expression of a plant-derived peptide harboring water-cleaning and antimicrobial activities. Biotechnol Bioeng 2003; 81:13-20. [PMID: 12432576 DOI: 10.1002/bit.10550] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.0] [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: 11/10/2022]
Abstract
Drinking water is currently a scarce world resource, the preparation of which requires complex treatments that include clarification of suspended particles and disinfection. Seed extracts of Moringa oleifera Lam., a tropical tree, have been proposed as an environment-friendly alternative, due to their traditional use for the clarification of drinking water. However, the precise nature of the active components of the extract and whether they may be produced in recombinant form are unknown. Here we show that recombinant or synthetic forms of a cationic seed polypeptide mediate efficient sedimentation of suspended mineral particles and bacteria. Unexpectedly, the polypeptide was also found to possesses a bactericidal activity capable of disinfecting heavily contaminated water. Furthermore, the polypeptide has been shown to efficiently kill several pathogenic bacteria, including antibiotic-resistant isolates of Staphylococcus, Streptococcus, and Legionella species. Thus, this polypeptide displays the unprecedented feature of combining water purification and disinfectant properties. Identification of an active principle derived from the seed extracts points to a range of potential for drinking water treatment or skin and mucosal disinfection in clinical settings.
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Affiliation(s)
- M Suarez
- Laboratory of Molecular Biotechnology, Université de Lausanne, Centre de Biotechnologie UNIL-EPFL, Switzerland
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Suarez M, Arroyo R. [Toward a methodology to popularize human rights for women]. Casa Mujer 2002:52-62. [PMID: 12319530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
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Suarez M, Garcia JR, Rodriguez J. Thermodynamic treatment of proton/sodium(1+) ion exchange on .alpha.-titanium phosphate. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j150645a036] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [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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Suarez M, Garcia JR, Rodriguez J. Calorimetric determination of proton/sodium(1+) ion exchange on .alpha.-titanium phosphate. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j150645a035] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Vasquez S, Cabezas C, Garcia B, Torres R, Larrabure G, Suarez M, Lucen A, Pernaz G, Gonzales L, Miranda G, Davalos E, Galarza C, Camasca N, Jara R. [PREVALENCE OF HBsAg AND anti-HBs CARRIERS IN PREGNANT WOMEN WHO RESIDE IN DIFFERENT ENDEMIC AREAS LOCATED IN CENTRAL-SOUTHERN DEPARTAMENTS OF PERU]. Rev Gastroenterol Peru 1999; 19:110-115. [PMID: 12196812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
The present study was performed to estimate the prevalence of HBV in pregnant women (mean age among groups 25,0 6,9) who live in areas of different endemicity, and located in the Departments of Lima, Junin, Apurimac, and Ayacucho in Peru. All studies were carried out using radioimmunological techniques. In the Instituto Materno Perinatal in Lima, located in a low endemical area, 2086 pregnant women whose ages ranged between 14 and 44 years were evaluated (for laboratory tests) at their first prenatal examination. A prevalence of 9,38% (HbsAG+), 0,38% (Ratio), and 3,18% (HBsAg+, anti-HBsAg+) was found, corresponding to 107 HBsAg+ pregnant women whose treated newborn wouId prevent the HBV chronic infection of approximate 21 newborn each year. 63% HBsAg+ pregnant women were born in Departments other than Lima. In the Hospital de Apoyo La Merced, located in Chanchamayo, Junin, which is a medium endemic area, 217 pregnant women whose ages ranged between 14 and 48 years were evaluated. The prevalence found in this Hospital was of 1,38% (HBsAg+), 1,2% (Ratio), and 17,8% (HBsAg+, anti-HBs+). All positive HBsAg were negative for HBeAg. The projection of results corresponded to a total of 9 HbsAg+ pregnant women and 2 newborn preventive of chronic disease per year. In the Guillermo D az de la Vega Hospital in Abancay, Apurimac, located in a medium to high endemic area, 221 pregnant women whose ages ranged between 15 and 46 years were evaluated. A prevalence of 1,36% (HBsAg+), 1,0% (Ratio), and 36,16% (HBsAg+, anti-HBs+) was found. All positive HBsAg were negative for HBeAg. Projected results corresponded to a total of 37 HBsAg+ pregnant carriers and 7 newborn preventive of chronic disease per year. The Hospital General de Huanta, in Ayacucho, located in a high endemicity area, presented a prevalence of 3,2% (HBsAg+), 1,9% (Ratio), and 76,2% (HBsAg+, anti-HBs+) from 126 pregnant women evaluated with ages between 15 and 48 years old. These results gave a total projection per year of 39 HBsAg+ pregnant women and 8 newborn preventive of chronic hepatic disease. Among a total of 4 positive HBsAg cases, 3 positive pregnant women were studied for HBeAg. All 3 were negative. These results establish the prevalence of HbsAg and antiHBs in pregnant women from different endemical areas with significant prevalence in the Departments of Ayacucho (Huanta), and Apurimac (Abancay). They also contribute towards the costbenefit analysis for the prevention of HBV chronic infection.
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Abstract
OBJECTIVE AND IMPORTANCE Intracranial foreign body granulomas are rare. We describe a case of an intracranial foreign body granuloma found in a 17-year-old female patient 9 years after she underwent a craniotomy for a tumor of unknown type. Postoperative imaging of patients who have undergone neurosurgical procedures can often reveal enhancing masses, and foreign body granuloma should be included in the differential diagnosis. CLINICAL PRESENTATION The patient presented with a history of developmental delay, panhypopituitarism, and chronic headache. Admission resulted from an acute increase in the severity of her headache. INTERVENTION Imaging studies, including computed tomography and magnetic resonance imaging, demonstrated a 1.5 x 2 cm round, enhancing anterior interhemispheric mass, appearing to arise from the falx and causing mild mass effect. A nonenhancing cystic mass was also noted in the suprasellar region but was without mass effect. The patient underwent a craniotomy and removal of the anterior mass without complication, and her headache resolved. A pathological examination of the specimen confirmed the diagnosis of foreign body granuloma. CONCLUSION Although rare, foreign body granuloma should be included in the differential diagnosis of previously operated intracranial masses. The importance of accurate historical information and guidelines that may assist in diagnosis are discussed.
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Affiliation(s)
- R P Feldman
- Department of Neurological Surgery, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York 10461, USA
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Martinez R, Suarez M, Martin N, Ochoa E, Seoane C, Verdecia Y. Mass spectral fragmentation patterns of new 5-acetyl-4-aryl-6-methyl-2(1H)pyridones. Rapid Commun Mass Spectrom 1999; 13:2180-2182. [PMID: 10523778 DOI: 10.1002/(sici)1097-0231(19991115)13:21<2180::aid-rcm772>3.0.co;2-s] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The electron impact mass spectra of new 5-acetyl-4-aryl-6-methyl-2(1H)pyridones have been studied. A dominant peak in all the spectra is due to cleavage of the CO-NH bond of the amido group with charge retention on the carbonyl group. This fragmentation is followed by a hydrogen rearrangement to the nitrogen atom forming ketene intermediates; this pathway leads to a highly stabilized ion which constitutes the base peak in the spectra in most of the compounds studied. Copyright 1999 John Wiley & Sons, Ltd.
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Affiliation(s)
- R Martinez
- Departamento de Quimica Organica I, Facultad de Quimica, Universidad Complutense, 28040-Madrid, Spain
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Casado JL, Perez-Elías MJ, Martí-Belda P, Antela A, Suarez M, Ciancas E, Frutos B, Perez MD, Guerrero A. Improved outcome of cytomegalovirus retinitis in AIDS patients after introduction of protease inhibitors. J Acquir Immune Defic Syndr Hum Retrovirol 1998; 19:130-4. [PMID: 9768621 DOI: 10.1097/00042560-199810010-00005] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The objective of this study was to evaluate the influence of protease inhibitor therapy on the rate of progression and survival of 17 AIDS patients with stable Cytomegalovirus retinitis, who were receiving anti-CMV therapy. CD4+ count, HIV load, and CMV antigenemia assay were determined at baseline, at the first month, and every 3 months thereafter. Median CD4+ count increased from 11 to 87 cells/mm3, and median HIV RNA level decreased from 4.96 to 3.28 log10 copies/ml, after 6 months on therapy. Although 9 patients (53%) relapsed in a median time of 97 days (range, 15-152 days), no further episodes were observed during a median follow-up of 17 months (range, 5-18 months). Thus, the probability of remaining free of relapse was twofold higher than that observed in matched patients who did not receive protease inhibitors. Median CD4+ count at the 3rd month was higher in those individuals who went on to progress (p = .03), and a positive result to a CMV antigenemia test was associated with progression of retinitis (relative hazard, 4.45; p = .04). Survival rate was 94% at 17 months (89% increase). Therefore, protease inhibitor therapy reduces retinitis progression and improves survival. However, the immunologic response may not provide initial sufficient protection to avoid, or even may play a role on, early CMV progression.
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Affiliation(s)
- J L Casado
- Infectious Diseases Unit, Hospital Ramón y Cajal, Madrid, Spain.
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Abstract
BACKGROUND The use of autologous fat has been advocated for tissue augmentation for over a century. However, this technique remains controversial and many investigators have made suggestions to increase its potential. OBJECTIVES To develop a less traumatic method to collect, purify, and reinject fat to obtain more dramatic augmentations for the cosmetic improvement of contours and tissue defects. METHODS Fat was collected from the donor site following tumescent infiltration of tissue. A "vented" syringe with an atraumatic Mercedes tip was used to collect the fat and, after washing with lactated Ringers or saline, the fat was transferred to small syringes for controlled injections. Small filaments of fat were placed in multi-layers throughout the area of the defect or area of desired contour change. The unused fat was frozen for a second or third injection session. RESULTS The fat transfer method yielded augmentations of 40%-120% of injected volume in the 339 areas treated. After 45-60 days, the implant was stabilized and remained for the length of our study (up to 10 years). In several cases excessive fat had to be removed. Other than slight bruising, occasional divots at the donor site, and three cases of bacterial infection, the autologous tissue transfer was an uncomplicated event. CONCLUSION Fat grafting has proven to be a safe and effective procedure for correcting and enhancing tissue defects and contour deficiencies.
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Affiliation(s)
- J E Fulton
- Fulton Skin Clinic, Newport Beach, California 92660, USA
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Abstract
BACKGROUND Over the last decade the benefits of occlusive dressings have been appreciated. These dressings allow the epithelium to resurface easier. The wound heals quicker. OBJECTIVE To evaluate a new silicone sheeting for immediate post-op wound care. Our objective was to determine its benefit in the wound care management after laser skin resurfacing. METHOD The silicone sheeting was applied immediately after laser resurfacing in 35 individuals. This temporary skin replacement was held in place with 4 x 4 gauzes and tube gauze netting. Although the tube netting and the 4 x 4 gauzes were changed daily the silicone sheeting remained in place for 4 or 5 days. Following this, applications of a petrolatum-based ointment were continued for another 5 days. At day 10 the skin care program was changed to a moisturizing sunscreen. Bleaching cream was added at day 15 in darker complexed individuals. RESULTS The dressing accelerated wound healing. Pain and swelling were minimized under the sheeting. Histologic examinations demonstrated a more rapid reepithelialization at these treated sites. Other than technical problems, such as the riding up of the dressing over the jawline or retraction of the dressing off the lips or off the eyelids, there were no adverse sequelae. The wound healed rapidly and allowed the rapid progression to the application of a moisturizer-sunscreen or a skin-bleaching cream. Other than these technical problems there were no complications. No wound infections were noted. CONCLUSION The use of silicone sheeting following skin resurfacing facilitated a rapid reepithelialization of treated areas. There was a remarkable reduction in erythema and edema accompanying the use of the dressing. The program made it possible for patients to return to work in 12-15 days.
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Barcina L, Vega A, Suarez M, Llavona R, Rodriguez J. PREPARATION AND CHARACTERIZATION OF THE INTERCALATION COMPOUNDS OF α-HAFNIUM PHOSPHATE WITH METHYLPIPERIDINES. Solvent Extraction and Ion Exchange 1998. [DOI: 10.1080/07366299808934557] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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