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Bell S, Berger J, Boyle C, Edelson J, Edwards J, Ha L, Lin K, Maeda K, Rossano J, Wittlieb-Weber C, White R, O'Connor M. Characteristics and Outcomes of Children Determined Not to be Candidates for Heart Transplantation. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1345] [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: 04/05/2023] Open
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Iler C, Backowski J, Bastardi H, Boyle C, Brickler M, Buesking C, Daneman S, Gambetta K, Ha L, Huston A, Sinicropi N, White R, Deshpande S. Non-HLA Antibodies: The State of Current Practice in Pediatric Heart Transplant. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1241] [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: 04/05/2023] Open
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Edwards J, Mejia E, Boyle C, Ha L, O'Connor M, Joshi P, White R, Rossano J, Berger J, Wittlieb-Weber C, Lin K, Maeda K, Edelson J. Donor Derived Cell Free DNA is Correlated with DSA and Rejection in Pediatric Heart Transplant Recipients. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1339] [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: 04/05/2023] Open
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Ha L, Sadiq Q, Singh J, Khan F. HPV-Related Multi-Phenotypic Sinonasal Carcinoma with Aggressive Clinical Behavior; A Rare Case. Am J Clin Pathol 2021. [DOI: 10.1093/ajcp/aqab191.174] [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: 11/14/2022] Open
Abstract
Abstract
Introduction/Objective
Human Papilloma Virus (HPV)-related multiphenotypic sinonasal carcinoma, previously known as HPV-related sinonasal carcinoma with adenoid cystic carcinoma-like features, is a rare type of sinonasal carcinoma with both epithelial-derived and salivary gland-type morphologic features. It is associated with high-risk HPV, but lacks MYB gene rearrangements.
Methods/Case Report
We report a case of a 59-year-old male who presented with a rapidly growing sinonasal mass. On MRI, a left nasal cavity lesion was identified growing laterally along the frontal process of the maxilla, extending into the middle meatus and into the maxillary sinus. Patient underwent a complex left medial maxillectomy, spheno- ethmoidectomy, and sinusotomy. On gross evaluation, the left inferior turbinate and sidewall demonstrated a 4 cm unremarkable turbinate with attached friable soft tissue. Microscopic examination revealed sections of carcinoma with various architectural patterns comprised of foci with adenoid cystic carcinoma-like morphology, basaloid squamous cell carcinoma and adenocarcinoma. The tumor showed positive immunostaining for P40, but focal reactivity to S100 and rare scattered reactivity with CD117. INI-1 immunostain was retained in tumor cells. P16 immunostain was strong and diffuse and high-risk cocktail HPV RNA ISH was positive. However, MYB FISH testing was equivocal.
Morphologic and immunophenotypic findings were consistent with HPV-related multiphenotypic sinonasal carcinoma. The tumor involved the olfactory nerve fibers requiring a skull base resection and showed extension into the dura mater.
Results (if a Case Study enter NA)
NA
Conclusion
HPV related multiphenotypic sinonasal carcinoma is a recently described entity that can pose significant diagnostic challenge. It typically has an indolent clinical course with potential for late recurrences. This case study highlights the potential aggressive nature of this type of sinonasal carcinoma, despite association with high-risk HPV, and use of ancillary testing in aiding diagnosis.
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Affiliation(s)
- L Ha
- Pathology, UTHSC , Memphis, Tennessee, UNITED STATES
| | - Q Sadiq
- Pathology, UTHSC , Memphis, Tennessee, UNITED STATES
| | - J Singh
- Pathology, UTHSC , Memphis, Tennessee, UNITED STATES
| | - F Khan
- Pathology, UTHSC , Memphis, Tennessee, UNITED STATES
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Ständer S, Ha L, Kridin K, Bieber K, Zillikens D, Ludwig RJ, Anemüller W, Boch K. DNA-chip-based molecular testing as a clue for the diagnosis of tinea: a case series. J Eur Acad Dermatol Venereol 2021; 35:e522-e524. [PMID: 33893676 DOI: 10.1111/jdv.17296] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S Ständer
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - L Ha
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - K Kridin
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - K Bieber
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - D Zillikens
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - R J Ludwig
- Department of Dermatology, University of Lübeck, Lübeck, Germany.,Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - W Anemüller
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - K Boch
- Department of Dermatology, University of Lübeck, Lübeck, Germany
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King K, Park S, Wilson W, Ha L, Ponnamperuma R, Sakakibara N, Jay S, Weinberg W. 172 Syk kinase activity is required for ΔNp63α-driven nuclear c-Rel accumulation associated with ΔNp63α/v-RasHA mediated carcinogenesis. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.177] [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: 10/17/2022]
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Ha L, Reilly D, Ponnamperuma R, Jay S. 135 Differential regulation of p16 ink4a and p19 arf in p63-overexpressing keratinocytes mediates distinct tumor phenotypes. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.149] [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: 10/19/2022]
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Abstract
BACKGROUND The use of percutaneous endoscopic gastrostomy (PEG) for enteral nutrition in patients admitted for stroke is difficult, varying and needs specific consideration. There is therefore need for more data on this patient group. We examined the indications, survival, tube removal and time with PEG in stroke patients and in other patients with PEG with the aim of providing guidance for the management of enteral nutrition via PEG in stroke patients. METHODS Retrospective assessment of data from all stroke patients and patients with other diseases (control group) who had received PEG for enteral nutrition during a period of 8.5 years. RESULTS Eighty-three stroke patients with dysphagia received PEG after unsuccessful use of nasogastric tubes or long-term tube feeding. Early mortality rate was 19% in the stroke group, 26% in the older group (>74 years) and 12% in the younger group (60-74 years). The PEG tubes were later removed due to swallowing recovery in 20% of the older group and in 31% of the younger group. At 90 days, 50%-60% still needed PEG. The stroke patients were older compared to the control group (n = 115); 30-day mortality was similar but more patients recovered the ability to swallow. CONCLUSIONS Stroke patients are older than other patients who receive PEG; 27% have swallowing recovery and more than 75% have long-term need for PEG. Nasogastric tubes often fail, and the need for early PEG placement (within 2 weeks) must be assessed in appropriate patients. The patient's prognosis, the objective of nutritional treatment, duration of dysphagia, age and comorbidity should all be taken into consideration.
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Affiliation(s)
- L Ha
- Dept. of Internal Medicine, Division of Gastroenterology, Ostfold County Hospital, Fredrikstad, Norway.
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Pritchard DE, Ceryak S, Ha L, Fornsaglio JL, Hartman SK, O'Brien TJ, Patierno SR. Mechanism of apoptosis and determination of cellular fate in chromium(VI)-exposed populations of telomerase-immortalized human fibroblasts. CELL GROWTH & DIFFERENTIATION : THE MOLECULAR BIOLOGY JOURNAL OF THE AMERICAN ASSOCIATION FOR CANCER RESEARCH 2001; 12:487-96. [PMID: 11682460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
The cellular responses to carcinogen exposure influence cellular fate, which in turn modulates the neoplastic response. Certain hexavalent chromium [Cr(VI)] compounds are implicated as occupational respiratory carcinogens at doses that are both genotoxic and cytotoxic. We examined the mechanism of Cr(VI)-induced apoptosis in normal human fibroblasts (BJ) immortalized by human telomerase gene transfection (BJ-hTERT), and we assessed the spectrum of cumulative cellular fates [(a) regaining of replicative potential; (b) terminal growth arrest; or (c) apoptosis] for a narrow range of increasingly genotoxic doses of Cr(VI). Exposure of BJ-hTERT cells to Cr(VI) resulted in a dose-dependent increase in apoptosis that involved mitochondrial disruption as evidenced by mitochondrial membrane depolarization and cytochrome c release. The initial response to Cr(VI) exposure was inhibition of cell cycle progression. At the lowest dose tested (1 microM; 32% clonogenic survival), the cell cycle inhibition led to terminal growth arrest but no apoptosis. The fraction of terminally growth arrested cells increased as the dose was increased to 3 microM but then decreased at 4, 5, and 6 microM as apoptosis became the predominant cell fate. Our results suggest that cell populations exposed to Cr(VI) have a different spectrum of responses, depending on the extent of DNA damage, and that the regaining of replicative potential after relatively higher genotoxic exposures may be attributable to either escape from, or resistance to, terminal growth arrest or apoptosis.
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Affiliation(s)
- D E Pritchard
- Department of Pharmacology, The George Washington University Medical Center, Washington, DC 20037, USA
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Hu VW, Heikka DS, Dieffenbach PB, Ha L. Metabolic radiolabeling: experimental tool or Trojan horse? (35)S-Methionine induces DNA fragmentation and p53-dependent ROS production. FASEB J 2001; 15:1562-8. [PMID: 11427488 DOI: 10.1096/fj.01-0102com] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [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: 11/11/2022]
Abstract
Despite the general assumption that widely used radiolabeled metabolites such as [(35)S]methionine and (3)H-thymidine do not adversely affect or perturb cell function, we and others have shown that such low-energy beta-emitters can cause cell cycle arrest and apoptosis of proliferating cells. The goal of the present study was to elucidate the targets and mechanisms of [(35)S]methionine-induced cellular toxicity. Comet analyses (single-cell electrophoresis) demonstrated dose-dependent DNA fragmentation in rabbit smooth muscle cells within a time frame (1-4 h) well within that of most radiolabeling protocols, whereas fluorescence analyses using a peroxide/hydroperoxide-sensitive dye revealed production of reactive oxygen species (ROS). Although ROS generation was inhibitable by antioxidants, DNA fragmentation was not inhibited and was in fact observed even under hypoxic conditions, suggesting that beta-radiation-induced DNA damage can occur independently of ROS formation. Studies with p53(+/+) and p53(-/-) human colorectal carcinoma cells further demonstrated the dissociation of early DNA damage from ROS formation in that both cell types exhibited DNA fragmentation in response to radiolabeling whereas only the p53(+/+) cells exhibited significant increases in ROS formation, which occurred well after significant DNA damage was observed. These findings demonstrate that metabolically incorporated low-energy beta-emitters such as [(35)S]methionine and (3)H-thymidine can induce DNA damage, thereby initiating cellular responses leading to cell cycle arrest or apoptosis. The results of this study require a reevaluation using low-energy beta-emitters to follow not only experimental protocols in vivo processes, but also acceptable exposure levels of these genotoxic compounds in the workplace and environment.
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Affiliation(s)
- V W Hu
- Department of Biochemistry and Molecular Biology, The George Washington University, School of Medicine and Health Sciences, Washington, DC 20037, USA.
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Ha L, Guo W, Feng C, Li H. [Association of nm23-H1 with orthopedic oncological conditions]. Zhonghua Wai Ke Za Zhi 1998; 36:477-9. [PMID: 11825445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To explore the correlation between nm23-H1 gene and malignant and semi-malignant bone tumors. METHOD Thirty surgical specimens were collected, including 8 osteosarcomas, 7 giant cell tumors, 4 chondrosarcomas, 2 Ewing's sarcomas, 2 malignant fibrohistocytomas, 1 neurofibrosarcoma, 1 schwannoma, and 5 metastatic cancers. The expression of nm23-H1 in these specimens was observed by in situ hybridization and immunohistochemical staining. RESULT The expression of nm23-H1 in 4 cases of primary giant cell tumor (GCT) was high, but was low or absent in 3 recurrent ones. In 4 cases of chondrosarcomas, the expression was positive. Its expression was basically negative in Ewing's tumor, malignant fibrous histiocytoma and metastatic sarcomas. CONCLUSION There is no association of nm23-H1 with osteosarcoma.
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Affiliation(s)
- L Ha
- Bone Tumor Laboratory, People's Hospital, Beijing Medical University, Beijing 100044
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Kadlec GJ, Jarboe CH, Sublett J, Pollard S, Ha L, Ellenberg D, Karibo JM, Simon T, Katsampes C. Pharmacokinetics and taste acceptance of an alcohol-free oxtriphylline solution. Ann Allergy 1980; 45:224-7. [PMID: 7425393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
As follow-up to earlier studies done on the pharmacokinetics of theophylline preparations in young children, an alcohol-free oxtriphylline syrup preparation was studied. Oxtriphylline syrup demonstrated no appreciable change in the pharmacokinetic parameter of half-life in this young age group. Therapeutic dose relationship were studied in conjunction with trough level measurements. Patient acceptance of this preparation is judged to be excellent.
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