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Kondo J, Yoshino S, Iida M, Takeda S, Nakashima C, Watanabe Y, Nishiyama M, Tokumitsu Y, Shindo Y, Nishimura T, Suzuki N, Hoshii Y, Itoh H, Nagano H. Effects of Extended Fixation on Advanced Gastric Cancer HER2 Status Assessment Using IHC and FISH. Anticancer Res 2024; 44:621-630. [PMID: 38307565 DOI: 10.21873/anticanres.16851] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/19/2023] [Accepted: 12/20/2023] [Indexed: 02/04/2024]
Abstract
BACKGROUND/AIM In gastric cancer, accurate determination of human epidermal growth factor receptor type 2 (HER2) status is crucial for treatment decision-making. However, the optimal formalin fixation time of gastric cancer specimens for HER2 status determination remains unestablished. Here, we investigated real-world data on formalin overfixation and its effect on HER2 status determination in gastric cancer. PATIENTS AND METHODS We comprehensively analyzed HER2 testing results in 228 gastric cancer specimens, including those subjected to formalin overfixation. Subsequently, we divided 52 resected specimens of advanced gastric cancer into three groups and studied the effects of short-term (6-72 h) and long-term (1 and 2 weeks) fixation on HER2 status determination using immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH). RESULTS A total of 21.5% (49/228) of the specimens were HER2-positive, whereas 78.5% (179/228) were negative. Among the HER2-negative specimens, no biopsies were overfixed, whereas 12.5% (9/72) of the surgical resection specimens were overfixed. The HER2 status of the 6-72-h group was 82.7% and 76.9% identical to that of the 1- and 2-week groups, when determined using IHC, and 73.1% and 36.5%, when determined using FISH, respectively. However, HER2 determination was not feasible in 26.9% and 63.5% of the specimens in the 1- and 2-week groups, respectively. CONCLUSION Formalin overfixation may hinder the determination of HER2 status and should be avoided in gastric cancer sample preparation.
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Affiliation(s)
- Junya Kondo
- Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine, Ube, Japan
- Department of Surgery, National Hospital Organization Kanmon Medical Center, Shimonoseki, Japan
| | - Shigefumi Yoshino
- Department of Surgery, National Hospital Organization Kanmon Medical Center, Shimonoseki, Japan
| | - Michihisa Iida
- Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Shigeru Takeda
- Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Chiyo Nakashima
- Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Yusaku Watanabe
- Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Mitsuo Nishiyama
- Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Yukio Tokumitsu
- Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Yoshitaro Shindo
- Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Taku Nishimura
- Department of Gastroenterological Surgery, Japan Community Health Care Organization Shimonoseki Medical Center, Shimonoseki, Japan
| | - Nobuaki Suzuki
- Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Yoshinobu Hoshii
- Department of Diagnostic Pathology, Yamaguchi University Hospital, Yamaguchi, Japan
| | - Hiroshi Itoh
- Department of Molecular Pathology, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Hiroaki Nagano
- Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine, Ube, Japan;
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Righi A, Cocchi S, Maioli M, Zoli M, Guaraldi F, Carretta E, Magagnoli G, Pasquini E, Melotti S, Vornetti G, Tonon C, Mazzatenta D, Asioli S. SMARCB1/INI1 loss in skull base conventional chordomas: a clinicopathological and molecular analysis. Front Oncol 2023; 13:1160764. [PMID: 37456229 PMCID: PMC10348873 DOI: 10.3389/fonc.2023.1160764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 06/20/2023] [Indexed: 07/18/2023] Open
Abstract
Introduction The loss of SMARCB1/INI1 protein has been recently described in poorly differentiated chordoma, an aggressive and rare disease variant typically arising from the skull base. Methods Retrospective study aimed at 1) examining the differential immunohistochemical expression of SMARCB1/INI1 in conventional skull base chordomas, including the chondroid subtype; 2) evaluating SMARCB1 gene deletions/copy number gain; and 3) analyzing the association of SMARCB1/INI1 expression with clinicopathological parameters and patient survival. Results 65 patients (35 men and 30 women) affected by conventional skull base chordoma, 15 with chondroid subtype, followed for >48 months after surgery were collected. Median age at surgery was 50 years old (range 9-79). Mean tumor size was 3.6 cm (range 2-9.5). At immunohistochemical evaluation, a partial loss of SMARCB1/INI1 (>10% of neoplastic examined cells) was observed in 21 (32.3%) cases; the remaining 43 showed a strong nuclear expression. Fluorescence in situ hybridization (FISH) analysis was performed in 15/21 (71.4%) cases of the chordomas with partial SMARCB1/INI1 loss of expression. Heterozygous deletion of SMARCB1 was identified in 9/15 (60%) cases and was associated to copy number gain in one case; no deletion was found in the other 6 (40%) cases, 3 of which presenting with a copy number gain. No correlations were found between partial loss of SMARCB1/INI1 and the clinicopathological parameters evaluated (i.e., age, tumor size, gender, tumor size and histotype). Overall 5-year survival and 5-year disease-free rates were 82% and 59%, respectively. According to log-rank test analysis the various clinico-pathological parameters and SMARCB1/INI1 expression did not impact on overall and disease free-survival. Discussion Partial loss of SMARCB1/INI1, secondary to heterozygous deletion and/or copy number gain of SMARCB1, is not peculiar of aggressive forms, but can be identified by immunohistochemistry in a significant portion of conventional skull base chordomas, including the chondroid subtype. The variable protein expression does not appear to correlate with clinicopathological parameters, nor survival outcomes, but still, it could have therapeutic implications.
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Affiliation(s)
| | | | | | - Matteo Zoli
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
- Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
| | - Federica Guaraldi
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
| | | | | | - Ernesto Pasquini
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
| | - Sofia Melotti
- Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
| | | | - Caterina Tonon
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
- Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
| | - Diego Mazzatenta
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
- Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
| | - Sofia Asioli
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
- Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
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Aljerian K. FOXO1 and PAX5 Rearrangement in Alveolar Rhabdomyosarcoma in Saudi Pediatric Patients. Fetal Pediatr Pathol 2022; 42:385-393. [PMID: 36484735 DOI: 10.1080/15513815.2022.2154134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Objective: In this study, we investigate the molecular rearrangement of FOXO1 in alveolar rhabdomyosarcoma (ARHS) in Saudi pediatric patients. Method: We performed a molecular detection of molecular translocation in 30 pediatric cases of ARHS using FOXO1 dual color break-apart FISH probe (ZytoLight®, 13q14.11) and PAX5 dual color break-apart FISH probe (ZytoLight®, 9p13.2). Results: All analyzable cases of ARHS demonstrated FOXO1 translocation whereas PAX5 translocation was not detected in any case. Conclusion: Although the testing for PAX5 rearrangement was based on protein-protein network analysis, our study showed that PAX5 translocation is not conspicuous in ARHS. PAX7/3::FOXO1 fusion genes feature ARMS, rendering crossreactivity between PAX7 and PAX3 a possible explanation. Nevertheless, PAX5 immunoreactivity and molecular translocation could be an adjunctive pathway that is confined to aggressive ARMS.
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Affiliation(s)
- Khaldoon Aljerian
- Department of Pathology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
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Yurkevich OY, Samatadze TE, Selyutina IY, Suprun NA, Suslina SN, Zoshchuk SA, Amosova AV, Muravenko OV. Integration of Genomic and Cytogenetic Data on Tandem DNAs for Analyzing the Genome Diversity Within the Genus Hedysarum L. (Fabaceae). Front Plant Sci 2022; 13:865958. [PMID: 35574118 PMCID: PMC9101955 DOI: 10.3389/fpls.2022.865958] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 03/28/2022] [Indexed: 06/15/2023]
Abstract
The section Multicaulia is the largest clade in the genus Hedysarum L. (Fabaceae). Representatives of the sect. Multicaulia are valuable plants used for medicinal and fodder purposes. The taxonomy and phylogeny of the sect. Multicaulia are still ambiguous. To clarify the species relationships within sect. Multicaulia, we, for the first time, explored repeatomes of H. grandiflorum Pall., H. zundukii Peschkova, and H. dahuricum Turcz. using next-generation sequencing technologies and a subsequent bioinformatic analysis by RepeatExplorer/TAREAN pipelines. The comparative repeatome analysis showed that mobile elements made up 20-24% (Class I) and about 2-2.5% (Class II) of their repetitive DNAs. The amount of ribosomal DNA varied from 1 to 2.6%, and the content of satellite DNA ranged from 2.7 to 5.1%. For each species, five high confident putative tandem DNA repeats and 5-10 low confident putative DNA repeats were identified. According to BLAST, these repeats demonstrated high sequence similarity within the studied species. FISH-based mapping of 35S rDNA, 5S rDNA, and satDNAs made it possible to detect new effective molecular chromosome markers for Hedysarum species and construct the species karyograms. Comparison of the patterns of satDNA localization on chromosomes of the studied species allowed us to assess genome diversity within the sect. Multicaulia. In all studied species, we revealed intra- and interspecific variabilities in patterns of the chromosomal distribution of molecular chromosome markers. In H. gmelinii Ledeb. and H. setigerum Turcz. ex Fisch. et Meyer, similar subgenomes were detected, which confirmed the polyploid status of their genomes. Our findings demonstrated a close genomic relationship among six studied species indicating their common origin and confirmed the taxonomic status of H. setigerum as a subspecies of H. gmelinii as well as the validity of combining the sect. Multicaulia and Subacaulia into one sect. Multicaulia.
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Affiliation(s)
- Olga Yu. Yurkevich
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Tatiana E. Samatadze
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
- Peoples’ Friendship University of Russia, Moscow, Russia
| | - Inessa Yu. Selyutina
- Central Siberian Botanical Garden, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | | | | | | | - Alexandra V. Amosova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Olga V. Muravenko
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
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Moretti R, Lampazzi E, Damiani C, Fabbri G, Lombardi G, Pioli C, Desiderio A, Serrao A, Calvitti M. Increased biting rate and decreased Wolbachia density in irradiated Aedes mosquitoes. Parasit Vectors 2022; 15:67. [PMID: 35209944 PMCID: PMC8867665 DOI: 10.1186/s13071-022-05188-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 02/01/2022] [Indexed: 11/21/2022] Open
Abstract
Background Releasing considerable numbers of radiation-sterilized males is a promising strategy to suppress mosquito vectors. However, releases may also include small percentages of biting females, which translate to non-negligible numbers when releases are large. Currently, the effects of irradiation on host-seeking and host-biting behaviors have not been exhaustively investigated. Information is also lacking regarding the effects of sterilizing treatment on the endosymbiotic bacterium Wolbachia, which is known to affect the vector competence of infected mosquitos. Methods To ascertain the effects of irradiation on females, the pupae of two Aedes albopictus strains, differing in their natural or artificial Wolbachia infection type, and Aedes aegypti—which is not infected by Wolbachia—were treated with various doses of X-rays and monitored for key fitness parameters and biting behavior over a period of 2 weeks. The effect of radiation on Wolbachia was investigated by quantitative polymerase chain reaction (qPCR) and fluorescence in situ hybridization (FISH) analysis. Results Partial Aedes albopictus female sterility was achieved at 28 Gy, but the number of weekly bites more than doubled compared to that of the controls. Radiation doses of 35 and 45 Gy completely inhibited progeny production but did not significantly affect the survival or flight ability of Ae. albopictus females and caused a tripling of the number of bites per female per week (compared to untreated controls). These results were also confirmed in Ae. aegypti after treatment at 50 Gy. Wolbachia density decreased significantly in 45-Gy-irradiated females, with the greatest decreases in the early irradiation group (26 ± 2-h-old pupae). Wolbachia density also decreased as adults aged. This trend was confirmed in ovaries but not in extra-ovarian tissues. FISH analysis showed a strongly reduced Wolbachia-specific fluorescence in the ovaries of 13 ± 1-day-old females. Conclusions These results suggest that, under sterile insect technique (SIT) programs, the vector capacity of a target population could increase with the frequency of the irradiated females co-released with the sterile males due to an increased biting rate. In the context of successful suppression, the related safety issues are expected to be generally negligible, but they should be conservatively evaluated when large-scale programs relying on imperfect sexing and high overflooding release ratios are run for long periods in areas endemic for arboviral diseases. Also, the effects of irradiation on the vector competence deserve further investigation. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13071-022-05188-9.
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Affiliation(s)
- Riccardo Moretti
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy.
| | - Elena Lampazzi
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
| | - Claudia Damiani
- School of Biosciences and Medical Veterinary, University of Camerino, Camerino, MC, Italy.,Biovecblok S.r.L, Camerino, MC, Italy
| | - Giulia Fabbri
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy.,School of Biosciences and Medical Veterinary, University of Camerino, Camerino, MC, Italy
| | - Giulia Lombardi
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy.,School of Biosciences and Medical Veterinary, University of Camerino, Camerino, MC, Italy
| | - Claudio Pioli
- Laboratory of Biomedical Technologies, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
| | - Angiola Desiderio
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
| | - Aurelio Serrao
- School of Biosciences and Medical Veterinary, University of Camerino, Camerino, MC, Italy.,Biovecblok S.r.L, Camerino, MC, Italy
| | - Maurizio Calvitti
- Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy
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Yin W, Cheng J, Tang Z, Toruner G, Hu S, Guo M, Robinson M, Medeiros LJ, Tang G. MET Amplification (MET/CEP7 Ratio ≥ 1.8) Is an Independent Poor Prognostic Marker in Patients With Treatment-naive Non-Small-cell Lung Cancer. Clin Lung Cancer 2020; 22:e512-e518. [PMID: 33288441 DOI: 10.1016/j.cllc.2020.11.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/26/2020] [Accepted: 11/09/2020] [Indexed: 11/16/2022]
Abstract
INTRODUCTION The MET pathway is a promising target in patients with non-small-cell lung cancer (NSCLC). Fluorescence in situ hybridization analysis has become a standard method to detect MET amplification. However, no consensus has been reached regarding the definition of MET amplification. We aimed to find clinically meaningful cutoffs for MET amplification that could be used as a prognostic marker and/or indication for MET inhibitor therapy. PATIENTS AND METHODS We reviewed the fluorescence in situ hybridization results of MET/CEP7 (centromere of chromosome 7) for 2260 patients with treatment-naive NSCLC from 2014 to 2019. Clinical and pathologic data were collected from the medical records. Log-rank tests and Cox proportional hazard models were used to estimate the overall survival (OS) among patients with different MET/CEP7 ratios and/or MET copy numbers. RESULTS Of the 2260 patients, 130 (5.8%) had had a MET/CEP7 ratio of ≥ 1.8 and 13 (0.6%) had had a ratio of ≥ 5.0. Of these 130 patients with a MET/CEP7 ratio of ≥ 1.8, 123 (95%) also had a MET copy number of ≥ 5. In general, a higher MET copy number and higher MET/CEP7 ratio were associated with advanced tumor stage. The OS was significantly shorter when the MET copy number was ≥ 10 and/or when the MET/CEP7 ratio was ≥ 1.8. A MET/CEP7 ratio of ≥ 1.8 remained a significant hazard to OS on multivariate analysis (hazard ratio, 1.63; P = .019). CONCLUSIONS Patients with a MET copy number of ≥ 10 and/or MET/CEP7 ratio of ≥ 1.8 showed significantly poorer survival, and a MET/CEP7 ratio of ≥ 1.8 was an independent poor prognostic factor.
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Affiliation(s)
- Wei Yin
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX; Department of Thoracic Surgery, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Joanne Cheng
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Zhenya Tang
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Gokce Toruner
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Shimin Hu
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Ming Guo
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Melissa Robinson
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - L Jeffrey Medeiros
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Guilin Tang
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX.
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Turcios AE, Papenbrock J. Biofiltration of the antibacterial drug sulfamethazine by the species Chenopodium quinoa and its further biodegradation through anaerobic digestion. J Environ Sci (China) 2019; 75:54-63. [PMID: 30473307 DOI: 10.1016/j.jes.2018.02.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 02/02/2018] [Accepted: 02/05/2018] [Indexed: 06/09/2023]
Abstract
The biofiltering capacity, distribution patterns and degradation of the antimicrobial sulfamethazine (SMT) by halophyte Chenopodium quinoa under hydroponic conditions and its further biodegradation through anaerobic digestion were evaluated. C. quinoa was cultivated for a complete life cycle under different concentrations of SMT (0, 2 and 5mg/L) and sodium chloride (0 and 15g/L). C. quinoa is able to uptake and partially degrade SMT. The higher the SMT concentration in the culture medium, the higher the SMT content in the plant tissue. SMT has different distribution patterns within the plant organs, and no SMT is found in the seeds. Dry crop residues containing SMT have a great potential to produce methane through anaerobic digestion and, in addition, SMT is further biodegraded. The highest specific methane yields are obtained using crop residues of the plants cultivated in the presence of salt and SMT with concentrations between 0 and 2mg/L.
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Affiliation(s)
- Ariel E Turcios
- Institute of Botany, Leibniz University Hannover, Herrenhäuserstr, 2, D-30419 Hannover, Germany.
| | - Jutta Papenbrock
- Institute of Botany, Leibniz University Hannover, Herrenhäuserstr, 2, D-30419 Hannover, Germany
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Possidente L, Landriscina M, Patitucci G, Borgia L, Lalinga V, Vita G. ALK rearrangement in specific subtypes of lung adenocarcinoma: immunophenotypic and morphological features. Med Oncol 2017; 34:76. [PMID: 28364271 DOI: 10.1007/s12032-017-0936-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 03/28/2017] [Indexed: 02/07/2023]
Abstract
Lung adenocarcinomas are characterized by a variety of genetic and epigenetic changes that lead to activation of specific signaling pathways. This allowed the classification of lung adenocarcinomas according to genetic alterations and the clinical development of novel anticancer agents that affect the activity of specific oncoproteins. In such a context, chromosomal rearrangements that cause constitutive activation of ALK gene define a category of lung adenocarcinomas that is amenable to targeted therapy with ALK inhibitors. Thus, a major issue of current research is to define the morphological and immunophenotypic features of lung ALK-rearranged adenocarcinomas to improve the selection of tumors suitable for molecular genotyping. ALK status was determined, by immunohistochemistry and fluorescence in situ hybridization, in 94 surgically resected lung adenocarcinomas and correlated with histomorphological parameters. Indeed, ALK rearrangement was observed in 10/94 (11%) lung adenocarcinomas and enriched in tumors with a predominant mucinous (46%; p < 0.05) and solid (29%; p < 0.05) pattern. By contrast, it was lacking or sporadically observed in lung adenocarcinomas with predominant acinar, papillary or lepidic pattern. Moreover, the presence of signet-ring cells was predominantly observed in ALK-rearranged tumors (47%; p < 0.05). These data suggest that ALK rearrangement is associated with specific and distinct clinical-pathological characters compared to other genotypes. Thus, the knowledge of these characteristics can improve the diagnostic accuracy and lead to a better understanding of the behavior of ALK-rearranged NSCLC.
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Affiliation(s)
- Luciana Possidente
- Laboratory of Clinical Research and Advanced Diagnostics, IRCCS-CROB, Referral Cancer Center of Basilicata, 85028, Rionero in Vulture, Italy.
| | - Matteo Landriscina
- Laboratory of Preclinical and Translational Research, IRCCS, Referral Cancer Center of Basilicata, 85028, Rionero in Vulture, Italy
- Medical Oncology, Department of Medical and Surgical Sciences, University of Foggia, 71100, Foggia, Italy
| | - Giuseppe Patitucci
- Pathology Unit, IRCCS, Referral Cancer Center of Basilicata, 85028, Rionero in Vulture, Italy
| | - Ludovica Borgia
- Pathology Unit, IRCCS, Referral Cancer Center of Basilicata, 85028, Rionero in Vulture, Italy
| | - Vittoria Lalinga
- Pathology Unit, IRCCS, Referral Cancer Center of Basilicata, 85028, Rionero in Vulture, Italy
| | - Giulia Vita
- Pathology Unit, IRCCS, Referral Cancer Center of Basilicata, 85028, Rionero in Vulture, Italy
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Martignoni G, Brunelli M, Segala D, Munari E, Gobbo S, Cima L, Borze I, Wirtanen T, Sarhadi VK, Atanesyan L, Savola S, Barzon L, Masi G, Fassan M, Eble JN, Bohling T, Cheng L, Delahunt B, Knuutila S. Validation of 34betaE12 immunoexpression in clear cell papillary renal cell carcinoma as a sensitive biomarker. Pathology 2016; 49:10-18. [PMID: 27923499 DOI: 10.1016/j.pathol.2016.05.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 05/22/2016] [Indexed: 02/07/2023]
Abstract
Clear cell papillary renal cell carcinoma (CCPRCC) is a recently recognised neoplasm with a broad spectrum of morphological characteristics, thus representing a challenging differential diagnosis, especially with the low malignant potential multicystic renal cell neoplasms and clear cell renal cell carcinoma. We selected 14 cases of CCPRCC with a wide spectrum of morphological features diagnosed on morphology and CK7 immunoreactivity and analysed them using a panel of immunohistochemical markers, focusing on 34βE12 and related CKs 1,5,10 and 14 and several molecular analyses such as fluorescence in situ hybridisation (FISH), array comparative genomic hybridisation (aCGH), VHL methylation, VHL and TCEB1 sequencing and multiplex ligation-dependent probe amplification (MLPA). Twelve of 13 (92%) CCPRCC tumours were positive for 34βE12. One tumour without 3p alteration by FISH revealed VHL mutation and 3p deletion at aCGH; thus, it was re-classified as clear cell RCC. We concluded that: (1) immunohistochemical expression of CK7 is necessary for diagnostic purposes, but may not be sufficient to identify CCPRCC, while 34βE12, in part due to the presence of CK14 antigen expression, can be extremely useful for the recognition of this tumour; and (2) further molecular analysis of chromosome 3p should be considered to support of CCPRCC diagnosis, when FISH analysis does not evidence the common loss of chromosome 3p.
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Affiliation(s)
- Guido Martignoni
- Department of Pathology and Diagnostics, Anatomic Pathology, University and Hospital Trust of Verona, Verona, Italy; Pederzoli Hospital, Anatomic Pathology, Peschiera del Garda, Verona, Italy.
| | - Matteo Brunelli
- Department of Pathology and Diagnostics, Anatomic Pathology, University and Hospital Trust of Verona, Verona, Italy
| | - Diego Segala
- Pederzoli Hospital, Anatomic Pathology, Peschiera del Garda, Verona, Italy
| | - Enrico Munari
- Department of Pathology and Diagnostics, Anatomic Pathology, University and Hospital Trust of Verona, Verona, Italy
| | - Stefano Gobbo
- Pederzoli Hospital, Anatomic Pathology, Peschiera del Garda, Verona, Italy
| | - Luca Cima
- Department of Pathology and Diagnostics, Anatomic Pathology, University and Hospital Trust of Verona, Verona, Italy
| | - Ioana Borze
- Hartmann Institute and HUSLab, University of Helsinki, Department of Pathology, Helsinki, Finland
| | - Tina Wirtanen
- Hartmann Institute and HUSLab, University of Helsinki, Department of Pathology, Helsinki, Finland
| | - Virinder Kaur Sarhadi
- Hartmann Institute and HUSLab, University of Helsinki, Department of Pathology, Helsinki, Finland
| | | | | | - Luisa Barzon
- Histology, Microbiology and Medical Biotechnologies, University of Padua, Padua, Italy
| | - Giulia Masi
- Histology, Microbiology and Medical Biotechnologies, University of Padua, Padua, Italy
| | - Matteo Fassan
- Department of Pathology, Anatomic Pathology, University of Padua, Padua, Italy
| | - John N Eble
- Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, Indiana, United States
| | - Tom Bohling
- Hartmann Institute and HUSLab, University of Helsinki, Department of Pathology, Helsinki, Finland
| | - Liang Cheng
- Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, Indiana, United States
| | - Brett Delahunt
- Wellington School of Medicine and Health Sciences, Department of Pathology and Molecular Medicine, University of Otago, Wellington, New Zealand
| | - Sakari Knuutila
- Hartmann Institute and HUSLab, University of Helsinki, Department of Pathology, Helsinki, Finland
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Pundir J, Magdalani L, El-Toukhy T. Outcome of preimplantation genetic diagnosis using FISH analysis for recurrent miscarriage in low-risk reciprocal translocation carriers. Eur J Obstet Gynecol Reprod Biol 2016; 203:214-9. [PMID: 27343738 DOI: 10.1016/j.ejogrb.2016.05.053] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Revised: 05/16/2016] [Accepted: 05/31/2016] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To assess PGD outcome using FISH analysis in couples with a history of recurrent miscarriage associated with a parental carrier of reciprocal translocation. STUDY DESIGN Couples in whom one partner was a carrier of a reciprocal translocation and had a history of two or more miscarriages and a low risk of a live born offspring with an unbalanced chromosomal rearrangement, underwent PGD treatment between 2000 and 2012. RESULTS 91 couples started 171 fresh and 11 frozen PGD cycles. Of the fresh cycles, 162 (95%) reached oocyte retrieval and 107 (63%) had embryo transfer. In 14 cycles (8%), surplus embryos were cryopreserved. Pregnancy was achieved in 52 fresh PGD cycles, leading to 20 miscarriages and 32 live births. Eleven frozen embryo transfer cycles resulted in two miscarriages and three live births. The overall live birth rate was 19% per fresh and frozen PGD cycle started (35/182) and miscarriage rate was 39% per pregnancy (22/57). The cumulative live birth rate was 32% per couple (29/91). CONCLUSION After PGD for recurrent miscarriage in low-risk reciprocal translocation carriers, the miscarriage risk remains high and chance of live birth is low. For those translocation carriers, natural conception may be a better option.
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Affiliation(s)
- Jyotsna Pundir
- Centre of Preimplantation Genetic Diagnosis and Assisted Conception Unit, Guy's and St. Thomas' Hospital NHS Foundation Trust, London, UK.
| | - Laurice Magdalani
- Centre of Preimplantation Genetic Diagnosis and Assisted Conception Unit, Guy's and St. Thomas' Hospital NHS Foundation Trust, London, UK
| | - Tarek El-Toukhy
- Centre of Preimplantation Genetic Diagnosis and Assisted Conception Unit, Guy's and St. Thomas' Hospital NHS Foundation Trust, London, UK
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11
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Bugrov AG, Jetybayev IE, Karagyan GH, Rubtsov NB. Sex chromosome diversity in Armenian toad grasshoppers (Orthoptera, Acridoidea, Pamphagidae). Comp Cytogenet 2016; 10:45-59. [PMID: 27186337 PMCID: PMC4856925 DOI: 10.3897/compcytogen.v10i1.6407] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Accepted: 10/09/2015] [Indexed: 05/19/2023]
Abstract
Although previous cytogenetic analysis of Pamphagidae grasshoppers pointed to considerable karyotype uniformity among most of the species in the family, our study of species from Armenia has discovered other, previously unknown karyotypes, differing from the standard for Pamphagidae mainly in having unusual sets of sex chromosomes. Asiotmethis turritus (Fischer von Waldheim, 1833), Paranocaracris rubripes (Fischer von Waldheim, 1846), and Nocaracris cyanipes (Fischer von Waldheim, 1846) were found to have the karyotype 2n♂=16+neo-XY and 2n♀=16+neo-XX, the neo-X chromosome being the result of centromeric fusion of an ancient acrocentric X chromosome and a large acrocentric autosome. The karyotype of Paranothrotes opacus (Brunner von Wattenwyl, 1882) was found to be 2n♂=14+X1X2Y and 2n♀=14+X1X1X2X2., the result of an additional chromosome rearrangement involving translocation of the neo-Y and another large autosome. Furthermore, evolution of the sex chromosomes in these species has involved different variants of heterochromatinization and miniaturization of the neo-Y. The karyotype of Eremopeza festiva (Saussure, 1884), in turn, appeared to have the standard sex determination system described earlier for Pamphagidae grasshoppers, 2n♂=18+X0 and 2n♀=18+XX, but all the chromosomes of this species were found to have small second C-positive arms. Using fluorescent in situ hybridization (FISH) with 18S rDNA and telomeric (TTAGG)n DNA repeats to yield new data on the structural organization of chromosomes in the species studied, we found that for most of them, clusters of repeats homologous to 18S rDNA localize on two, three or four pairs of autosomes and on the X. In Eremopeza festiva, however, FISH with labelled 18S rDNA painted C-positive regions of all autosomes and the X chromosome; clusters of telomeric repeats localized primarily on the ends of the chromosome arms. Overall, we conclude that the different stages of neo-Y degradation revealed in the Pamphagidae species studied make the family a very promising and useful model for studying sex chromosome evolution.
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Affiliation(s)
- Alexander G. Bugrov
- Institute of Systematics and Ecology of Animals, Russian Academy of Sciences, Siberian Branch, Frunze St. 11, 630091 Novosibirsk, Russia
| | - Ilyas E. Jetybayev
- Institute of Systematics and Ecology of Animals, Russian Academy of Sciences, Siberian Branch, Frunze St. 11, 630091 Novosibirsk, Russia
- Institute of Cytology and Genetics, Russian Academy of Sciences, Siberian Branch, Pr. Lavrentjeva, 630090 Novosibirsk, Russia
| | - Gayane H. Karagyan
- Scientific Center of Zoology and Hydroecology NAS RA, P. Sevak 7, 0014 Yerevan, Armenia
| | - Nicolay B. Rubtsov
- Institute of Cytology and Genetics, Russian Academy of Sciences, Siberian Branch, Pr. Lavrentjeva, 630090 Novosibirsk, Russia
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12
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Cossu-Rocca P, Muroni MR, Sanges F, Sotgiu G, Asunis A, Tanca L, Onnis D, Pira G, Manca A, Dore S, Uras MG, Ena S, De Miglio MR. EGFR kinase-dependent and kinase-independent roles in clear cell renal cell carcinoma. Am J Cancer Res 2015; 6:71-83. [PMID: 27073724 PMCID: PMC4759398] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Accepted: 11/03/2015] [Indexed: 06/05/2023] Open
Abstract
Epidermal growth factor receptor (EGFR) is associated with progression of many epithelial malignancies and represents a significant therapeutic target. Although clear cell renal cell carcinoma (CCRCC) has been widely investigated for EGFR molecular alterations, genetic evidences of EGFR gene activating mutations and/or gene amplification have been rarely confirmed in the literature. Therefore, until now EGFR-targeted therapies in clinical trials have been demonstrated unsuccessful. New evidence has been given about the interactions between EGFR and the sodium glucose co-transporter-1 (SGLT1) in maintaining the glucose basal intracellular level to favour cancer cell growth and survival; thus a new functional role may be attributed to EGFR, regardless of its kinase activity. To define the role of EGFR in CCRCC an extensive investigation of genetic changes and functional kinase activities was performed in a series of tumors by analyzing the EGFR mutational status and expression profile, together with the protein expression of downstream signaling pathways members. Furthermore, we investigated the co-expression of EGFR and SGLT1 proteins and their relationships with clinic-pathological features in CCRCC. EGFR protein expression was identified in 98.4% of CCRCC. Furthermore, it was described for the first time that SGLT1 is overexpressed in CCRCC (80.9%), and that co-expression with EGFR is appreciable in 79.4% of the tumours. Moreover, the activation of downstream EGFR pathways was found in about 79.4% of SGLT1-positive CCRCCs. The mutational status analysis of EGFR failed to demonstrate mutations on exons 18 to 24 and the presence of EGFR-variantIII (EGFRvIII) in all CCRCCs analyzed. FISH analysis revealed absence of EGFR amplification, and high polysomy of chromosome 7. Finally, the EGFR gene expression profile showed gene overexpression in 38.2% of CCRCCs. Our study contributes to define the complexity of EGFR role in CCRCC, identifying its bivalent kinase-dependent and kinase-independent functions, both potentially involved in CCRCC progression. These results might have important implications on therapeutic approaches to CCRCC, since the disruption of the interaction between EGFR/SGLT1, mediated by anti-EGFR antibodies and/or SGLT1 inhibitors, might constitute a novel therapeutic target for CCRCC treatment, and new clinical trials should be evaluated on the basis of this therapeutic proposal.
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Affiliation(s)
- Paolo Cossu-Rocca
- Department of Clinical and Experimental Medicine, University of SassariSassari, Italy
- Department of Diagnostic Services, Surgical Pathology Unit, “Giovanni Paolo II” Hospital, ASL OlbiaOlbia, Italy
| | - Maria R Muroni
- Department of Clinical and Experimental Medicine, University of SassariSassari, Italy
| | - Francesca Sanges
- Department of Clinical and Experimental Medicine, University of SassariSassari, Italy
| | - Giovanni Sotgiu
- Epidemiology and Medical Statistics Unit, Department of Biomedical Sciences, University of Sassari, Research, Medical Education and Professional Development Unit, AOU SassariSassari, Italy
| | - Anna Asunis
- Department of Pathology, Azienda Ospedaliera BrotzuCagliari, Italy
| | - Luciana Tanca
- Department of Oncology, “A. Businco” Oncologic Hospital, ASL CagliariCagliari, Italy
| | - Daniela Onnis
- Department of Pathology, Azienda Ospedaliera BrotzuCagliari, Italy
| | - Giovanna Pira
- Department of Biomedical Sciences, University of SassariSassari, Italy
| | | | - Simone Dore
- Epidemiology and Medical Statistics Unit, Department of Biomedical Sciences, University of Sassari, Research, Medical Education and Professional Development Unit, AOU SassariSassari, Italy
| | - Maria G Uras
- Department of Pathology, AOU SassariSassari, Italy
| | - Sara Ena
- Department of Biomedical Sciences, University of SassariSassari, Italy
| | - Maria R De Miglio
- Department of Clinical and Experimental Medicine, University of SassariSassari, Italy
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13
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Brunelli M, Nottegar A, Bogina G, Caliò A, Cima L, Eccher A, Vicentini C, Marcolini L, Scarpa A, Pedron S, Brunello E, Knuutila S, Sapino A, Marchiò C, Bria E, Molino A, Carbognin L, Tortora G, Jasani B, Miller K, Merdol I, Zanatta L, Laurino L, Wirtanen T, Zamboni G, Marconi M, Chilosi M, Manfrin E, Martignoni G, Bonetti F. Monosomy of chromosome 17 in breast cancer during interpretation of HER2 gene amplification. Am J Cancer Res 2015; 5:2212-2221. [PMID: 26328251 PMCID: PMC4548332] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2015] [Accepted: 06/11/2015] [Indexed: 06/04/2023] Open
Abstract
Monosomy of chromosome 17 may affect the assessment of HER2 amplification. Notably, the prevalence ranges from 1% up to 49% due to lack of consensus in recognition. We sought to investigate the impact of monosomy of chromosome 17 to interpretation of HER2 gene status. 201 breast carcinoma were reviewed for HER2 gene amplification and chromosome 17 status. FISH analysis was performed by using double probes (LSI/CEP). Absolute gene copy number was also scored per each probe. HER2 FISH test was repeated on serial tissue sections, ranging in thickness from 3 to 20 µm. Ratio was scored and subsequently corrected by monosomy after gold control test using the aCGH method to overcome false interpretation due to artefactual nuclear truncation. HER2 immunotests was performed on all cases. 26/201 cases were amplified (13%). Single signals per CEP17 were revealed in 7/201 (3.5%) cases. Five out of 7 cases appeared monosomic with aCGH (overall, 5/201, 2.5%) and evidenced single signals in >60% of nuclei after second-look on FISH when matching both techniques. Among 5, one case showed amplification with a pattern 7/1 (HER2/CEP17>2) of copies (3+ at immunotest); three cases revealed single signals per both probes (LSI/CEP=1) and one case revealed a 3:1 ratio; all last 4 cases showed 0/1+ immunoscore. We concluded that: 1) monosomy of chromosome 17 may be observed in 2.5% of breast carcinoma; 2) monosomy of chromosome 17 due to biological reasons rather than nuclear truncation was observed when using the cut-off of 60% of nuclei harboring single signals; 3) the skewing of the ratio due to single centromeric 17 probe may lead to false positive evaluation; 4) breast carcinomas showing a 3:1 ratio (HER2/CEP17) usually show negative 0/1+ immunoscore and <6 gene copy number at FISH.
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Affiliation(s)
- Matteo Brunelli
- Department of Pathology and Diagnostic, Anatomic Pathology, University and Hospital TrustVerona, Italy
| | - Alessia Nottegar
- Department of Pathology and Diagnostic, Anatomic Pathology, University and Hospital TrustVerona, Italy
| | - Giuseppe Bogina
- Anatomic Pathology, Sacro Cuore Don Calabria HospitalNegrar, Italy
| | - Anna Caliò
- Department of Pathology and Diagnostic, Anatomic Pathology, University and Hospital TrustVerona, Italy
| | - Luca Cima
- Department of Pathology and Diagnostic, Anatomic Pathology, University and Hospital TrustVerona, Italy
| | - Albino Eccher
- Department of Pathology and Diagnostic, Anatomic Pathology, University and Hospital TrustVerona, Italy
| | | | - Lisa Marcolini
- Department of Pathology and Diagnostic, Anatomic Pathology, University and Hospital TrustVerona, Italy
| | - Aldo Scarpa
- Department of Pathology and Diagnostic, Anatomic Pathology, University and Hospital TrustVerona, Italy
- ARC-NET Applied Research Centre, University of VeronaItaly
| | - Serena Pedron
- Department of Pathology and Diagnostic, Anatomic Pathology, University and Hospital TrustVerona, Italy
| | - Eleonora Brunello
- Department of Pathology and Diagnostic, Anatomic Pathology, University and Hospital TrustVerona, Italy
| | - Sakari Knuutila
- Department of Pathology, Laboratory of Molecular Cytogenetic, University of HelsinkiFinland
| | - Anna Sapino
- Department of Medical Sciences, Anatomic Pathology, University and Hospital TrustTurin, Italy
| | - Caterina Marchiò
- Department of Medical Sciences, Anatomic Pathology, University and Hospital TrustTurin, Italy
| | - Emilio Bria
- Medical Oncology, University and Hospital TrustVerona, Italy
| | | | - Luisa Carbognin
- Medical Oncology, University and Hospital TrustVerona, Italy
| | | | - Bharat Jasani
- Institute of Cancer & Genetics, Pathology, Cardiff UniversityUnited Kingdom
| | - Keith Miller
- UK NEQAS, University College of LondonUnited Kingdom
| | | | - Lucia Zanatta
- Anatomic Pathology, S. Maria di Ca’ Foncello HospitalTreviso, Italy
| | - Licia Laurino
- Anatomic Pathology, S. Maria di Ca’ Foncello HospitalTreviso, Italy
| | - Tiina Wirtanen
- Department of Pathology, Laboratory of Molecular Cytogenetic, University of HelsinkiFinland
- Department of Pathology, HUSLab, University Central HospitalHelsinki, Finland
| | - Giuseppe Zamboni
- Department of Pathology and Diagnostic, Anatomic Pathology, University and Hospital TrustVerona, Italy
- Anatomic Pathology, Sacro Cuore Don Calabria HospitalNegrar, Italy
| | - Marcella Marconi
- Anatomic Pathology, Sacro Cuore Don Calabria HospitalNegrar, Italy
| | - Marco Chilosi
- Department of Pathology and Diagnostic, Anatomic Pathology, University and Hospital TrustVerona, Italy
| | - Erminia Manfrin
- Department of Pathology and Diagnostic, Anatomic Pathology, University and Hospital TrustVerona, Italy
| | - Guido Martignoni
- Department of Pathology and Diagnostic, Anatomic Pathology, University and Hospital TrustVerona, Italy
| | - Franco Bonetti
- Department of Pathology and Diagnostic, Anatomic Pathology, University and Hospital TrustVerona, Italy
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Hovnik T, Šmigoc Schweiger D, Kotnik P, Kovač J, Battelino T, Trebušak Podkrajšek K. Cytogenetic and Molecular Genetic Characterization of Children with Short Stature. Zdr Varst 2015; 54:98-102. [PMID: 27646915 PMCID: PMC4820174 DOI: 10.1515/sjph-2015-0015] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 01/13/2015] [Indexed: 12/25/2022] Open
Abstract
Background The deficiency of SHOX gene (short stature homeobox-containing gene) has been recognized as the most frequent monogenetic cause of short stature. SHOX gene has been associated with short stature in Turner syndrome and Leri Weill dyschondrosteosis as well with non-syndromic idiopathic short stature. The aim of this study was to determine the frequency of SHOX deletions and mutations in a cohort of Slovenian children with short stature, and to delineate indications for routine SHOX gene mutation screening. Methods and results 40 selected subjects with idiopathic short stature were screened for entire SHOX gene deletion and for mutations in the SHOX gene coding region (exon 2 to 6), together with sequences flanking the exon-intron boundaries. FISH analysis on metaphase and interphase spreads revealed no entire gene deletion. Additionally, no pathogenic point mutations or smaller deletion/duplications were identified in this study group. Conclusions SHOX gene deletions and point mutations are not a common cause of idiopathic short stature in a cohort of Slovenian children with short stature. Therefore, the frequency of SHOX mutations must be much lower as expected based on the reported data.
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Affiliation(s)
- Tinka Hovnik
- University Medical Centre Ljubljana, University Children's Hospital, Unit for Special Laboratory Diagnostics, Vrazov trg 1, 1000 Ljubljana, Slovenia
| | - Darja Šmigoc Schweiger
- University Children's Hospital, Department of Pediatric Endocrinology, Diabetes and Metabolic Diseases, Bohoriceva 20, 1000 Ljubljana, Slovenia
| | - Primož Kotnik
- University Children's Hospital, Department of Pediatric Endocrinology, Diabetes and Metabolic Diseases, Bohoriceva 20, 1000 Ljubljana, Slovenia; University of Ljubljana, Faculty of Medicine, Vrazov trg 2, 1000 Ljubljana, Slovenia
| | - Jernej Kovač
- University Medical Centre Ljubljana, University Children's Hospital, Unit for Special Laboratory Diagnostics, Vrazov trg 1, 1000 Ljubljana, Slovenia
| | - Tadej Battelino
- University Children's Hospital, Department of Pediatric Endocrinology, Diabetes and Metabolic Diseases, Bohoriceva 20, 1000 Ljubljana, Slovenia; University of Ljubljana, Faculty of Medicine, Vrazov trg 2, 1000 Ljubljana, Slovenia
| | - Katarina Trebušak Podkrajšek
- University Medical Centre Ljubljana, University Children's Hospital, Unit for Special Laboratory Diagnostics, Vrazov trg 1, 1000 Ljubljana, Slovenia; University of Ljubljana, Faculty of Medicine, Vrazov trg 2, 1000 Ljubljana, Slovenia
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15
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Altieri V, Capozzi O, Marzano MC, Catapano O, Di Biase I, Rocchi M, De Tollis G. Molecular characterization of an analphoid supernumerary marker chromosome derived from 18q22.1➔qter in prenatal diagnosis: a case report. Mol Cytogenet 2014; 7:69. [PMID: 25360155 PMCID: PMC4213471 DOI: 10.1186/s13039-014-0069-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Accepted: 10/06/2014] [Indexed: 11/30/2022] Open
Abstract
Background Small supernumerary marker chromosomes (sSMC) occur in 0.072% of unselected cases of prenatal diagnoses, and their molecular cytogenetic characterization is required to establish a reliable karyotype-phenotype correlation. A small group of sSMC are C-band-negative and devoid of alpha-satellite DNA. We report the molecular cytogenetic characterization of a de novo analphoid sSMC derived from 18q22.1→qter in cultured amniocytes. Results We identified an analphoid sSMC in cultured amniocytes during a prenatal diagnosis performed because of advanced maternal age. GTG-banding revealed an sSMC in all metaphases. FISH experiments with a probe specific for the chromosome 18 centromere, and C-banding revealed neither alphoid sequences nor C-banding-positive satellite DNA thereby suggesting the presence of a neocentromere. To characterize the marker in greater detail, we carried out additional FISH experiments with a set of appropriate BAC clones. The pattern of the FISH signals indicated a symmetrical organization of the marker, the breakpoint likely representing the centromere of an inverted duplicated chromosome that results in tetrasomy of 18q22.1→qter. The karyotype after molecular cytogenetic investigations was interpreted as follows: 47,XY,+inv dup(18)(qter→q22.1::q22.1→neo→qter) Conclusion Our case is the first report, in the prenatal diagnosis setting, of a de novo analphoid marker chromosome originating from the long arm of chromosome 18, and the second report of a neocentromere formation at 18q22.1.
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16
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Baxa M, Hruska-Plochan M, Juhas S, Vodicka P, Pavlok A, Juhasova J, Miyanohara A, Nejime T, Klima J, Macakova M, Marsala S, Weiss A, Kubickova S, Musilova P, Vrtel R, Sontag EM, Thompson LM, Schier J, Hansikova H, Howland DS, Cattaneo E, DiFiglia M, Marsala M, Motlik J. A transgenic minipig model of Huntington's Disease. J Huntingtons Dis 2014; 2:47-68. [PMID: 25063429 DOI: 10.3233/jhd-130001] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND Some promising treatments for Huntington's disease (HD) may require pre-clinical testing in large animals. Minipig is a suitable species because of its large gyrencephalic brain and long lifespan. OBJECTIVE To generate HD transgenic (TgHD) minipigs encoding huntingtin (HTT)1-548 under the control of human HTT promoter. METHODS Transgenesis was achieved by lentiviral infection of porcine embryos. PCR assessment of gene transfer, observations of behavior, and postmortem biochemical and immunohistochemical studies were conducted. RESULTS One copy of the human HTT transgene encoding 124 glutamines integrated into chromosome 1 q24-q25 and successful germ line transmission occurred through successive generations (F0, F1, F2 and F3 generations). No developmental or gross motor deficits were noted up to 40 months of age. Mutant HTT mRNA and protein fragment were detected in brain and peripheral tissues. No aggregate formation in brain up to 16 months was seen by AGERA and filter retardation or by immunostaining. DARPP32 labeling in WT and TgHD minipig neostriatum was patchy. Analysis of 16 month old sibling pairs showed reduced intensity of DARPP32 immunoreactivity in neostriatal TgHD neurons compared to those of WT. Compared to WT, TgHD boars by one year had reduced fertility and fewer spermatozoa per ejaculate. In vitro analysis revealed a significant decline in the number of WT minipig oocytes penetrated by TgHD spermatozoa. CONCLUSIONS The findings demonstrate successful establishment of a transgenic model of HD in minipig that should be valuable for testing long term safety of HD therapeutics. The emergence of HD-like phenotypes in the TgHD minipigs will require more study.
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Affiliation(s)
- Monika Baxa
- Laboratory of Cell Regeneration and Plasticity, Institute of Animal Physiology and Genetics, v.v.i., AS CR, Libechov, Czech Republic Faculty of Science, Department of Cell Biology, Charles University in Prague, Prague, Czech Republic
| | - Marian Hruska-Plochan
- Laboratory of Cell Regeneration and Plasticity, Institute of Animal Physiology and Genetics, v.v.i., AS CR, Libechov, Czech Republic Faculty of Science, Department of Cell Biology, Charles University in Prague, Prague, Czech Republic Neurodegeneration Laboratory, Department of Anesthesiology, University of California, San Diego, La Jolla, CA, USA Sanford Consortium for Regenerative Medicine, San Diego, La Jolla, CA, USA
| | - Stefan Juhas
- Laboratory of Cell Regeneration and Plasticity, Institute of Animal Physiology and Genetics, v.v.i., AS CR, Libechov, Czech Republic
| | - Petr Vodicka
- Laboratory of Cell Regeneration and Plasticity, Institute of Animal Physiology and Genetics, v.v.i., AS CR, Libechov, Czech Republic Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
| | - Antonin Pavlok
- Laboratory of Cell Regeneration and Plasticity, Institute of Animal Physiology and Genetics, v.v.i., AS CR, Libechov, Czech Republic
| | - Jana Juhasova
- Laboratory of Cell Regeneration and Plasticity, Institute of Animal Physiology and Genetics, v.v.i., AS CR, Libechov, Czech Republic
| | - Atsushi Miyanohara
- Vector Development Laboratory, Human Gene Therapy Program, Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA
| | - Tetsuya Nejime
- Neurodegeneration Laboratory, Department of Anesthesiology, University of California, San Diego, La Jolla, CA, USA
| | - Jiri Klima
- Laboratory of Cell Regeneration and Plasticity, Institute of Animal Physiology and Genetics, v.v.i., AS CR, Libechov, Czech Republic
| | - Monika Macakova
- Laboratory of Cell Regeneration and Plasticity, Institute of Animal Physiology and Genetics, v.v.i., AS CR, Libechov, Czech Republic Faculty of Science, Department of Cell Biology, Charles University in Prague, Prague, Czech Republic
| | - Silvia Marsala
- Neurodegeneration Laboratory, Department of Anesthesiology, University of California, San Diego, La Jolla, CA, USA Sanford Consortium for Regenerative Medicine, San Diego, La Jolla, CA, USA
| | - Andreas Weiss
- Novartis Institutes for Biomedical Research, Neuroscience Discovery, Basel, Switzerland IRBM Promidis, Pomezia, Italy
| | - Svatava Kubickova
- Department of Genetics and Reproduction, Veterinary Research Institute, Brno, Czech Republic
| | - Petra Musilova
- Department of Genetics and Reproduction, Veterinary Research Institute, Brno, Czech Republic
| | - Radek Vrtel
- Department of Clinical Genetics and Fetal Medicine, Palacky University, University Hospital Olomouc, Olomouc, Czech Republic
| | - Emily M Sontag
- Department of Biological Chemistry University of California, Irvine, CA, USA Department of Psychiatry and Human Behavior, University of California, Irvine, CA, USA
| | - Leslie M Thompson
- Department of Biological Chemistry University of California, Irvine, CA, USA Department of Psychiatry and Human Behavior, University of California, Irvine, CA, USA Department of Neurobiology and Behavior University of California, Irvine, CA, USA
| | - Jan Schier
- Institute of Information Theory and Automation v.v.i., AS CR, Prague, Czech Republic
| | - Hana Hansikova
- Laboratory for Study of Mitochondrial Disorders, First Faculty of Medicine, Department of Pediatrics and Adolescent Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | | | - Elena Cattaneo
- Department of Pharmacological Sciences and Centre for Stem Cell Research, Università degli Studi di Milano, Milan, Italy
| | - Marian DiFiglia
- Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
| | - Martin Marsala
- Neurodegeneration Laboratory, Department of Anesthesiology, University of California, San Diego, La Jolla, CA, USA Sanford Consortium for Regenerative Medicine, San Diego, La Jolla, CA, USA Institute of Neurobiology, Slovak Academy of Sciences, Kosice, Slovak Republic
| | - Jan Motlik
- Laboratory of Cell Regeneration and Plasticity, Institute of Animal Physiology and Genetics, v.v.i., AS CR, Libechov, Czech Republic
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Vera-Carbonell A, López-González V, Bafalliu JA, Piñero-Fernández J, Susmozas J, Sorli M, López-Pérez R, Fernández A, Guillén-Navarro E, López-Expósito I. Pre- and postnatal findings in a patient with a novel rec(8)dup(8q)inv(8)(p23.2q22.3) associated with San Luis Valley syndrome. Am J Med Genet A 2013; 161A:2369-75. [PMID: 23894102 DOI: 10.1002/ajmg.a.36103] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Accepted: 05/30/2013] [Indexed: 01/30/2023]
Abstract
San Luis Valley syndrome, which is due to a recombinant chromosome 8 (SLV Rec8) found in Hispanic individuals from Southwestern United States, is a well-established syndrome associated with intellectual disabilities and, frequently, severe cardiac anomalies. We report for the first time on a Moroccan girl with a recombinant chromosome 8 prenatally diagnosed as SLV Rec8 by conventional cytogenetic studies. At birth, an oligo array-CGH (105 K) defined the breakpoints and the size of the imbalanced segments, with a deletion of ≈ 2.27 Mb (8p23.2-pter) and a duplication of ≈ 41.93 Mb (8q22.3-qter); thus this recombinant chromosome 8 differed from that previously reported in SLV Rec8 syndrome. The phenotypic characteristics associated with this SLV Rec8 genotype overlap those commonly found in patients with 8q duplication reported in the literature. We review SLV Rec8 and other chromosome 8 aberrations and suggest that the overexpression of cardiogenic genes located at 8q may be the cause of the cardiac defects in this patient.
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Affiliation(s)
- Ascensión Vera-Carbonell
- Sección de Citogenética, Centro de Bioquímica y Genética Clínica, Hospital U. Virgen de la Arrixaca, El Palmar, Murcia, Spain
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Laurent C, Guérin M, Frenois FX, Thuries V, Jalabert L, Brousset P, Valmary-Degano S. Whole-slide imaging is a robust alternative to traditional fluorescent microscopy for fluorescence in situ hybridization imaging using break-apart DNA probes. Hum Pathol 2013; 44:1544-55. [PMID: 23517924 DOI: 10.1016/j.humpath.2012.12.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Revised: 11/28/2012] [Accepted: 12/06/2012] [Indexed: 11/19/2022]
Abstract
Fluorescence in situ hybridization is an indispensable technique used in routine pathology and for theranostic purposes. Because fluorescence in situ hybridization techniques require sophisticated microscopic workstations and long procedures of image acquisition with sometimes subjective and poorly reproducible results, we decided to test a whole-slide imaging system as an alternative approach. In this study, we used the latest generation of Pannoramic 250 Flash digital microscopes (P250 Flash digital microscopes; 3DHISTECH, Budapest, Hungary) to digitize fluorescence in situ hybridization slides of diffuse large B cells lymphoma cases for detecting MYC rearrangement. The P250 Flash digital microscope was found to be precise with better definition of split signals in cells containing MYC rearrangement with fewer truncated signals as compared to traditional fluorescence microscopy. This digital technique is easier thanks to the preview function, which allows almost immediate identification of the tumor area, and the panning and zooming functionalities as well as a shorter acquisition time. Moreover, fluorescence in situ hybridization analyses using the digital technique appeared to be more reproducible between pathologists. Finally, the digital technique also allowed prolonged conservation of photos. In conclusion, whole-slide imaging technologies represent rapid, robust, and highly sensitive methods for interpreting fluorescence in situ hybridization slides with break-apart probes. In addition, these techniques offer an easier way to interpret the signals and allow definitive storage of the images for pathology expert networks or e-learning databases.
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Affiliation(s)
- Camille Laurent
- INSERM, U.563, Centre de Physiopathologie de Toulouse Purpan, Toulouse, F-31300 France.
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D'Antonio A, Angrisani B, Caleo A, Baldi C, Liguori G, Memoli D, Cuomo R, Angrisani P. Epithelioid variant of pleomorphic liposarcoma as potential mimic of metastatic carcinoma. Rare Tumors 2011; 3:e10. [PMID: 21464872 PMCID: PMC3070449 DOI: 10.4081/rt.2011.e10] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2010] [Revised: 02/08/2011] [Accepted: 02/10/2011] [Indexed: 11/23/2022] Open
Abstract
We report a case of epithelioid variant of pleomorphic liposarcoma (EPL) found in the the infrapatellar fat pad of Hoffa of a 31-year old male. Histologically, the predominant population was formed by epithelioid cells with eosinophilic or clear cytoplasm admixed with rare pleomorphic lipoblasts. The immunohistochemical panel was not helpful in the diagnosis. FISH analysis using the locus-specific indicator CHOP (12q13) dual color break apart was applied to representative formalin-fixed, paraffin-embedded tissue sections. The result of FISH indicated a rearranged CHOP (DDIT3) gene and confirmed the diagnosis of EPL. The EPL should be differentiated from a metastatic carcinoma or other type of sarcoma. In these cases a clinicopathological correlation and an exhaustive sampling of the specimen for demonstration of lipogenic areas or pleomorphic lipoblasts is always necessary. FISH with demonstration of CHOP gene rearrangement is useful in providing specific ancillary information for the difficult differential diagnosis of this case.
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Affiliation(s)
- Antonio D'Antonio
- Unit of Pathologic Anatomy and Oncology, San Giovanni di Dio e Ruggi d'Aragona, Salerno
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