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Wegert J, Fischer AK, Palhazi B, Treger TD, Hilgers C, Ziegler B, Jung H, Jüttner E, Waha A, Fuchs J, Warmann SW, Frühwald MC, Hubertus J, Pritchard-Jones K, Graf N, Behjati S, Furtwängler R, Gessler M, Vokuhl C. TRIM28 inactivation in epithelial nephroblastoma is frequent and often associated with predisposing TRIM28 germline variants. J Pathol 2024; 262:10-21. [PMID: 37792584 DOI: 10.1002/path.6206] [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: 05/03/2023] [Revised: 07/22/2023] [Accepted: 08/18/2023] [Indexed: 10/06/2023]
Abstract
Wilms tumors (WTs) are histologically diverse childhood cancers with variable contributions of blastema, stroma, and epithelia. A variety of cancer genes operate in WTs, including the tripartite-motif-containing-28 gene (TRIM28). Case reports and small case series suggest that TRIM28 mutations are associated with epithelial morphology and WT predisposition. Here, we systematically investigated the prevalence of TRIM28 inactivation and predisposing mutations in a cohort of 126 WTs with >2/3 epithelial cells, spanning 20 years of biobanking in the German SIOP93-01/GPOH and SIOP2001/GPOH studies. Overall, 44.4% (56/126) cases exhibited loss of TRIM28 by immunohistochemical staining. Of these, 48 could be further analyzed molecularly, revealing TRIM28 sequence variants in each case - either homozygous (~2/3) or heterozygous with epigenetic silencing of the second allele (~1/3). The majority (80%) of the mutations resulted in premature stops and frameshifts. In addition, we detected missense mutations and small deletions predicted to destabilize the protein through interference with folding of key structural elements such as the zinc-binding clusters of the RING, B-box-2, and PHD domains or the central coiled-coil region. TRIM28-mutant tumors otherwise lacked WT-typical IGF2 alterations or driver events, except for rare TP53 progression events that occurred with expected frequency. Expression profiling identified TRIM28-mutant tumors as a homogeneous subset of epithelial WTs that mostly present with stage I disease. There was a high prevalence of perilobar nephrogenic rests, putative precursor lesions, that carried the same biallelic TRIM28 alterations in 7/7 cases tested. Importantly, 46% of the TRIM28 mutations were present in blood cells or normal kidney tissue, suggesting germline events or somatic mosaicism, partly supported by family history. Given the high prevalence of predisposing variants in TRIM28-driven WT, we suggest that immunohistochemical testing of TRIM28 be integrated into diagnostic practice as the management of WT in predisposed children differs from that with sporadic tumors. © 2023 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Jenny Wegert
- Theodor-Boveri-Institute/Biocenter, Developmental Biochemistry, University of Wuerzburg, Wuerzburg, Germany
| | | | - Balazs Palhazi
- Theodor-Boveri-Institute/Biocenter, Developmental Biochemistry, University of Wuerzburg, Wuerzburg, Germany
| | - Taryn D Treger
- Wellcome Sanger Institute, Hinxton, UK
- Department of Paediatrics, University of Cambridge, Cambridge, UK
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Cäcilia Hilgers
- Department of Pathology, Section of Pediatric Pathology, University of Bonn, Bonn, Germany
| | - Barbara Ziegler
- Theodor-Boveri-Institute/Biocenter, Developmental Biochemistry, University of Wuerzburg, Wuerzburg, Germany
| | | | - Eva Jüttner
- Department of Pathology, Schleswig-Holstein University Hospital, Kiel, Germany
| | - Andreas Waha
- Department of Neuropathology, University of Bonn, Bonn, Germany
| | - Jörg Fuchs
- Department of Pediatric Surgery and Pediatric Urology, University Children's Hospital Tübingen, Tübingen, Germany
| | - Steven W Warmann
- Department of Pediatric Surgery and Pediatric Urology, University Children's Hospital Tübingen, Tübingen, Germany
| | - Michael C Frühwald
- Swabian Children's Cancer Center, Pediatrics and Adolescent Medicine, University Hospital Augsburg, Augsburg, Germany
| | - Jochen Hubertus
- Department of Pediatric Surgery at Marienhospital Witten, Ruhr-University Bochum, Witten, Germany
| | - Kathy Pritchard-Jones
- UCL Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Norbert Graf
- Department of Paediatric Haematology and Oncology, Saarland University Hospital, Homburg, Germany
| | - Sam Behjati
- Wellcome Sanger Institute, Hinxton, UK
- Department of Paediatrics, University of Cambridge, Cambridge, UK
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Rhoikos Furtwängler
- Department of Paediatric Haematology and Oncology, Saarland University Hospital, Homburg, Germany
- Pediatric Hematology and Oncology, Inselspital Children's Hospital, University Bern, Bern, Switzerland
| | - Manfred Gessler
- Theodor-Boveri-Institute/Biocenter, Developmental Biochemistry, University of Wuerzburg, Wuerzburg, Germany
- Comprehensive Cancer Center Mainfranken, University of Wuerzburg, Wuerzburg, Germany
| | - Christian Vokuhl
- Department of Pathology, Section of Pediatric Pathology, University of Bonn, Bonn, Germany
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Gu Y, Sheng F, Gao M, Zhang L, Hao S, Chen S, Chen R, Xu Y, Wu D, Han Y, Chen L, Liu Y, Lu B, Zhao W, Lou X, Chen Z, Li P, Wang X, Yao K, Fu Q. Acute and continuous exposure of airborne fine particulate matter (PM 2.5): diverse outer blood-retinal barrier damages and disease susceptibilities. Part Fibre Toxicol 2023; 20:50. [PMID: 38110941 PMCID: PMC10726629 DOI: 10.1186/s12989-023-00558-2] [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: 08/01/2023] [Accepted: 12/04/2023] [Indexed: 12/20/2023] Open
Abstract
BACKGROUND The association between air pollution and retinal diseases such as age-related macular degeneration (AMD) has been demonstrated, but the pathogenic correlation is unknown. Damage to the outer blood-retinal barrier (oBRB), which consists of the retinal pigment epithelium (RPE) and choriocapillaris, is crucial in the development of fundus diseases. OBJECTIVES To describe the effects of airborne fine particulate matter (PM2.5) on the oBRB and disease susceptibilities. METHODS A PM2.5-exposed mice model was established through the administration of eye drops containing PM2.5. Optical coherence tomography angiography, transmission electron microscope, RPE immunofluorescence staining and Western blotting were applied to study the oBRB changes. A co-culture model of ARPE-19 cells with stretching vascular endothelial cells was established to identify the role of choroidal vasodilatation in PM2.5-associated RPE damage. RESULTS Acute exposure to PM2.5 resulted in choroidal vasodilatation, RPE tight junctions impairment, and ultimately an increased risk of retinal edema in mice. These manifestations are very similar to the pachychoroid disease represented by central serous chorioretinopathy (CSC). After continuous PM2.5 exposure, the damage to the RPE was gradually repaired, but AMD-related early retinal degenerative changes appeared under continuous choroidal inflammation. CONCLUSION This study reveals oBRB pathological changes under different exposure durations, providing a valuable reference for the prevention of PM2.5-related fundus diseases and public health policy formulation.
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Grants
- 82271063, 81670833, 81870641, 8207939, 81300641 National Natural Science Foundation of China
- 82271063, 81670833, 81870641, 8207939, 81300641 National Natural Science Foundation of China
- 2019C03091, 2020C03035 Key Research and Development Program of Zhejiang Province
- 2019C03091, 2020C03035 Key Research and Development Program of Zhejiang Province
- 2019QNA7026 Fundamental Research Funds for the Central Universities
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Affiliation(s)
- Yuzhou Gu
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Medical College of Zhejiang University, Zhejiang University, Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, 310009, Zhejiang Province, China
| | - Feiyin Sheng
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Medical College of Zhejiang University, Zhejiang University, Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, 310009, Zhejiang Province, China
| | - Mengqin Gao
- State Key Lab of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang Province, China
| | - Li Zhang
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Medical College of Zhejiang University, Zhejiang University, Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, 310009, Zhejiang Province, China
| | - Shengjie Hao
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Medical College of Zhejiang University, Zhejiang University, Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, 310009, Zhejiang Province, China
| | - Shuying Chen
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Medical College of Zhejiang University, Zhejiang University, Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, 310009, Zhejiang Province, China
| | - Rongrong Chen
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Medical College of Zhejiang University, Zhejiang University, Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, 310009, Zhejiang Province, China
| | - Yili Xu
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Medical College of Zhejiang University, Zhejiang University, Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, 310009, Zhejiang Province, China
| | - Di Wu
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Medical College of Zhejiang University, Zhejiang University, Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, 310009, Zhejiang Province, China
| | - Yu Han
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Medical College of Zhejiang University, Zhejiang University, Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, 310009, Zhejiang Province, China
| | - Lu Chen
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Medical College of Zhejiang University, Zhejiang University, Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, 310009, Zhejiang Province, China
| | - Ye Liu
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Medical College of Zhejiang University, Zhejiang University, Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, 310009, Zhejiang Province, China
| | - Bing Lu
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Medical College of Zhejiang University, Zhejiang University, Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, 310009, Zhejiang Province, China
| | - Wei Zhao
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Medical College of Zhejiang University, Zhejiang University, Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, 310009, Zhejiang Province, China
| | - Xiaoming Lou
- Department of Environmental and Occupational Health, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, 310051, Zhejiang Province, China
| | - Zhijian Chen
- Department of Environmental and Occupational Health, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, 310051, Zhejiang Province, China
| | - Peng Li
- State Key Lab of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang Province, China.
| | - Xiaofeng Wang
- Department of Environmental and Occupational Health, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, 310051, Zhejiang Province, China.
| | - Ke Yao
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Medical College of Zhejiang University, Zhejiang University, Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, 310009, Zhejiang Province, China.
| | - Qiuli Fu
- Eye Center of the 2nd Affiliated Hospital, School of Medicine, Medical College of Zhejiang University, Zhejiang University, Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, 310009, Zhejiang Province, China.
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Chisholm KM, Bohling SD. Childhood Myelodysplastic Syndrome. Clin Lab Med 2023; 43:639-655. [PMID: 37865508 DOI: 10.1016/j.cll.2023.06.005] [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] [Indexed: 10/23/2023]
Abstract
Myelodysplastic syndrome (MDS) in children is rare, accounting for < 5% of all childhood hematologic malignancies. With the advent of next-generation sequencing, the etiology of many childhood MDS (cMDS) cases has been elucidated with the finding of predisposing germline mutations in one-quarter to one-third of cases; somatic mutations have also been identified, indicating that cMDS is different than adult MDS. Herein, cMDS classification schema, clinical presentation, laboratory values, bone marrow histology, differential diagnostic considerations, and the recent molecular findings of cMDS are described.
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Affiliation(s)
- Karen M Chisholm
- Hematopathology, Department of Laboratories, Seattle Children's Hospital, 4800 Sand Point Way Northeast, FB.4.510, Seattle, WA 98105, USA; Department of Laboratory Medicine and Pathology, University of Washington Medical Center, 4800 Sand Point Way Northeast, FB.4.510, Seattle, WA 98105, USA.
| | - Sandra D Bohling
- Hematopathology, Department of Laboratories, Seattle Children's Hospital, 4800 Sand Point Way Northeast, FB.4.510, Seattle, WA 98105, USA; Department of Laboratory Medicine and Pathology, University of Washington Medical Center, 4800 Sand Point Way Northeast, FB.4.510, Seattle, WA 98105, USA
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4
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Singh N, Hansdah K, Bouzid A, Ray CS, Desai A, Panda KC, Choudhury JC, Tekari A, Masmoudi S, Ramchander PV. Genetic variants and altered expression of SERPINF1 confer disease susceptibility in patients with otosclerosis. J Hum Genet 2023; 68:635-642. [PMID: 37308566 DOI: 10.1038/s10038-023-01158-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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 03/27/2023] [Accepted: 04/27/2023] [Indexed: 06/14/2023]
Abstract
Otosclerosis (OTSC) is a focal and diffuse bone disorder of the human middle ear characterized by abnormal bone growth and deposition at the stapes' footplate. This hinders the transmission of acoustic waves to the inner ear leading to subsequent conductive hearing loss. The plausible convections for the disease are genetic and environmental factors with yet an unraveled root cause. Recently, exome sequencing of European individuals with OTSC revealed rare pathogenic variants in the Serpin Peptidase Inhibitor, Clade F (SERPINF1) gene. Here, we sought to investigate the causal variants of SERPINF1 in the Indian population. The gene and protein expression was also evaluated in otosclerotic stapes to ameliorate our understanding of the potential effect of this gene in OTSC. A total of 230 OTSC patients and 230 healthy controls were genotyped by single-strand conformational polymorphism and Sanger sequencing methods. By comparing the case controls, we identified five rare variants (c.72 C > T, c.151 G > A, c.242 C > G, c.823 A > T, and c.826 T > A) only in patients. Four variants c.390 T > C (p = 0.048), c.440-39 C > T (p = 0.007), c.643 + 9 G > A (p = 0.035), and c.643 + 82 T > C (p = 0.005) were found to be significantly associated with the disease. Down-regulation of SERPINF1 transcript level in otosclerotic stapes was quantified by qRT-PCR, ddPCR and further validated by in situ hybridization. Similarly, reduced protein expression was observed by immunohistochemistry and immunofluorescence in otosclerotic stapes that corroborate with immunoblotting of patients' plasma samples. Our findings identified that SERPINF1 variants are associated with the disease. Furthermore, reduced expression of SERPINF1 in otosclerotic stapes might contribute to OTSC pathophysiology.
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Affiliation(s)
- Neha Singh
- Institute of Life Sciences, Nalco Square, Chandrasekharpur, Bhubaneswar, India
- Regional Centre for Biotechnology, Faridabad, India
| | - Kirtal Hansdah
- Institute of Life Sciences, Nalco Square, Chandrasekharpur, Bhubaneswar, India
| | - Amal Bouzid
- Laboratory of Molecular and Cellular Screening Processes, Centre of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
- Sharjah Institute for Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Chinmay Sundar Ray
- Department of Ear, Nose, and Throat (ENT), Shrirama Chandra Bhanja (SCB) Medical College & Hospital, Cuttack, India
| | - Ashim Desai
- Dr. ABR Desai Ear, Nose and Throat (ENT) Clinic and Research Centre, Mumbai, India
| | - Khirod Chandra Panda
- Department of Ear, Nose, and Throat (ENT), Shrirama Chandra Bhanja (SCB) Medical College & Hospital, Cuttack, India
| | - Jyotish Chandra Choudhury
- Department of Forensic Medicine & Toxicology (FMT), Shrirama Chandra Bhanja (SCB) Medical College & Hospital, Cuttack, India
| | - Adel Tekari
- Laboratory of Molecular and Cellular Screening Processes, Centre of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Saber Masmoudi
- Laboratory of Molecular and Cellular Screening Processes, Centre of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Puppala Venkat Ramchander
- Institute of Life Sciences, Nalco Square, Chandrasekharpur, Bhubaneswar, India.
- Regional Centre for Biotechnology, Faridabad, India.
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Vidyadhara DJ, Yarreiphang H, Raju TR, Alladi PA. Differences in Neuronal Numbers, Morphology, and Developmental Apoptosis in Mice Nigra Provide Experimental Evidence of Ontogenic Origin of Vulnerability to Parkinson's Disease. Neurotox Res 2021; 39:1892-1907. [PMID: 34762290 DOI: 10.1007/s12640-021-00439-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/26/2021] [Accepted: 10/29/2021] [Indexed: 10/19/2022]
Abstract
Parkinson disease (PD) prevalence varies by ethnicity. In an earlier study, we replicated the reduced vulnerability to PD in an admixed population, using 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-susceptible C57BL/6 J, MPTP-resistant CD-1 and their F1 crossbreds. In the present study, we investigated if the differences have a developmental origin. Substantia nigra was evaluated at postnatal days 2 (P2), P6, P10, P14, P18, and P22. C57BL/6 J mice had smaller nigra and fewer dopaminergic neurons than the CD-1 and crossbreds at P2, which persisted through development. A significant increase in numbers and nigral volume was observed across strains until P14. A drastic decline thereafter was specific to C57BL/6 J. CD-1 and crossbreds retained their numbers from P14 to stabilize with supernumerary neurons at adulthood. The neuronal size increased gradually to attain adult morphology at P10 in the resistant strains, vis-à-vis at P22 in C57BL/6 J. Accordingly, in comparison to C57BL/6 J, the nigra of CD-1 and reciprocal crossbreds possessed cytomorphological features of resilience, since birth. The considerably lesser dopaminergic neuronal loss in the CD-1 and crossbreds was seen at P2 and P14 and thereafter was complemented by attenuated developmental cell death. The differences in programmed cell death were confirmed by reduced TUNEL labelling, AIF, and caspase-3 expression. GDNF expression aligned with the cell death pattern at P2 and P14 in both nigra and striatum. Earlier maturity of nigra and its neurons appears to be better features that reflect as MPTP resistance at adulthood. Thus, variable MPTP vulnerability in mice and also differential susceptibility to PD in humans may arise early during nigral development.
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Affiliation(s)
- D J Vidyadhara
- Department of Neurophysiology, National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, 560029, India
- Departments of Neurology and Neuroscience, Yale University School of Medicine, New Haven, CT, USA
| | - Haorei Yarreiphang
- Department of Neurophysiology, National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, 560029, India
| | - Trichur R Raju
- Department of Neurophysiology, National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, 560029, India
| | - Phalguni Anand Alladi
- Department of Clinical Psychopharmacology and Neurotoxicology, National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, 560029, India.
- Formerly at Department of Neurophysiology, National Institute of Mental Health and Neuro-Sciences, Hosur Road, Bangalore, India.
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6
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Geula C, Dunlop SR, Ayala I, Kawles AS, Flanagan ME, Gefen T, Mesulam MM. Basal forebrain cholinergic system in the dementias: Vulnerability, resilience, and resistance. J Neurochem 2021; 158:1394-1411. [PMID: 34272732 PMCID: PMC8458251 DOI: 10.1111/jnc.15471] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [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: 04/12/2021] [Revised: 07/08/2021] [Accepted: 07/12/2021] [Indexed: 01/15/2023]
Abstract
The basal forebrain cholinergic neurons (BFCN) provide the primary source of cholinergic innervation of the human cerebral cortex. They are involved in the cognitive processes of learning, memory, and attention. These neurons are differentially vulnerable in various neuropathologic entities that cause dementia. This review summarizes the relevance to BFCN of neuropathologic markers associated with dementias, including the plaques and tangles of Alzheimer's disease (AD), the Lewy bodies of diffuse Lewy body disease, the tauopathy of frontotemporal lobar degeneration (FTLD-TAU) and the TDP-43 proteinopathy of FTLD-TDP. Each of these proteinopathies has a different relationship to BFCN and their corticofugal axons. Available evidence points to early and substantial degeneration of the BFCN in AD and diffuse Lewy body disease. In AD, the major neurodegenerative correlate is accumulation of phosphotau in neurofibrillary tangles. However, these neurons are less vulnerable to the tauopathy of FTLD. An intriguing finding is that the intracellular tau of AD causes destruction of the BFCN, whereas that of FTLD does not. This observation has profound implications for exploring the impact of different species of tauopathy on neuronal survival. The proteinopathy of FTLD-TDP shows virtually no abnormal inclusions within the BFCN. Thus, the BFCN are highly vulnerable to the neurodegenerative effects of tauopathy in AD, resilient to the neurodegenerative effect of tauopathy in FTLD and apparently resistant to the emergence of proteinopathy in FTLD-TDP and perhaps also in Pick's disease. Investigations are beginning to shed light on the potential mechanisms of this differential vulnerability and their implications for therapeutic intervention.
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Affiliation(s)
- Changiz Geula
- Mesulam Center for Cognitive Neurology and Alzheimer's Disease, Feinberg School of Medicine Chicago, Northwestern University, Chicago, Illinois, USA
| | - Sara R Dunlop
- Mesulam Center for Cognitive Neurology and Alzheimer's Disease, Feinberg School of Medicine Chicago, Northwestern University, Chicago, Illinois, USA
| | - Ivan Ayala
- Mesulam Center for Cognitive Neurology and Alzheimer's Disease, Feinberg School of Medicine Chicago, Northwestern University, Chicago, Illinois, USA
| | - Allegra S Kawles
- Mesulam Center for Cognitive Neurology and Alzheimer's Disease, Feinberg School of Medicine Chicago, Northwestern University, Chicago, Illinois, USA
| | - Margaret E Flanagan
- Mesulam Center for Cognitive Neurology and Alzheimer's Disease, Feinberg School of Medicine Chicago, Northwestern University, Chicago, Illinois, USA
| | - Tamar Gefen
- Mesulam Center for Cognitive Neurology and Alzheimer's Disease, Feinberg School of Medicine Chicago, Northwestern University, Chicago, Illinois, USA
| | - Marek-Marsel Mesulam
- Mesulam Center for Cognitive Neurology and Alzheimer's Disease, Feinberg School of Medicine Chicago, Northwestern University, Chicago, Illinois, USA
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Cao L, Lee S, Krings JG, Rauseo AM, Reynolds D, Presti R, Goss C, Mudd PA, O'Halloran JA, Wang L. Asthma in patients with suspected and diagnosed coronavirus disease 2019. Ann Allergy Asthma Immunol 2021; 126:535-541.e2. [PMID: 33639262 PMCID: PMC7905379 DOI: 10.1016/j.anai.2021.02.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/07/2021] [Accepted: 02/22/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND Patients with asthma are comparatively susceptible to respiratory viral infections and more likely to develop severe symptoms than people without asthma. During the coronavirus disease 2019 (COVID-19) pandemic, it is necessary to adequately evaluate the characteristics and outcomes of the population with asthma in the population tested for and diagnosed as having COVID-19. OBJECTIVE To perform a study to assess the impact of asthma on COVID-19 diagnosis, presenting symptoms, disease severity, and cytokine profiles. METHODS This was an analysis of a prospectively collected cohort of patients suspected of having COVID-19 who presented for COVID-19 testing at a tertiary medical center in Missouri between March 2020 and September 2020. We classified and analyzed patients according to their pre-existing asthma diagnosis and subsequent COVID-19 testing results. RESULTS Patients suspected of having COVID-19 (N = 435) were enrolled in this study. The proportions of patients testing positive for COVID-19 were 69.2% and 81.9% in the groups with asthma and without asthma, respectively. The frequencies of relevant symptoms were similar between the groups with asthma with positive and negative COVID-19 test results. In the population diagnosed as having COVID-19 (n = 343), asthma was not associated with several indicators of COVID-19 severity, including hospitalization, admission to an intensive care unit, mechanical ventilation, death due to COVID-19, and in-hospital mortality after multivariate adjustment. Patients with COVID-19 with asthma exhibited significantly lower levels of plasma interleukin-8 than patients without asthma (adjusted P = .02). CONCLUSION The population with asthma is facing a challenge in preliminary COVID-19 evaluation owing to an overlap in the symptoms of COVID-19 and asthma. However, asthma does not increase the risk of COVID-19 severity if infected.
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Affiliation(s)
- Lijuan Cao
- Division of Allergy and Immunology, Department of Medicine, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - Sandra Lee
- Division of Allergy and Immunology, Department of Medicine, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - James G Krings
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - Adriana M Rauseo
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - Daniel Reynolds
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - Rachel Presti
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - Charles Goss
- Division of Biostatistics, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - Philip A Mudd
- Department of Emergency Medicine, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - Jane A O'Halloran
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - Leyao Wang
- Division of Allergy and Immunology, Department of Medicine, Washington University School of Medicine in St Louis, St Louis, Missouri.
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8
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Sly PD, Trottier BA, Bulka CM, Cormier SA, Fobil J, Fry RC, Kim KW, Kleeberger S, Kumar P, Landrigan PJ, Lodrop Carlsen KC, Pascale A, Polack F, Ruchirawat M, Zar HJ, Suk WA. The interplay between environmental exposures and COVID-19 risks in the health of children. Environ Health 2021; 20:34. [PMID: 33771185 PMCID: PMC7996114 DOI: 10.1186/s12940-021-00716-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 10/26/2020] [Accepted: 03/07/2021] [Indexed: 05/05/2023]
Abstract
BACKGROUND An unusual feature of SARS-Cov-2 infection and the COVID-19 pandemic is that children are less severely affected than adults. This is especially paradoxical given the epidemiological links between poor air quality and increased COVID-19 severity in adults and that children are generally more vulnerable than adults to the adverse consequences of air pollution. OBJECTIVES To identify gaps in knowledge about the factors that protect children from severe SARS-Cov-2 infection even in the face of air pollution, and to develop a transdisciplinary research strategy to address these gaps. METHODS An international group of researchers interested in children's environmental health was invited to identify knowledge gaps and to develop research questions to close these gaps. DISCUSSION Key research questions identified include: what are the effects of SAR-Cov-2 infection during pregnancy on the developing fetus and child; what is the impact of age at infection and genetic susceptibility on disease severity; why do some children with COVID-19 infection develop toxic shock and Kawasaki-like symptoms; what are the impacts of toxic environmental exposures including poor air quality, chemical and metal exposures on innate immunity, especially in the respiratory epithelium; what is the possible role of a "dirty" environment in conveying protection - an example of the "hygiene hypothesis"; and what are the long term health effects of SARS-Cov-2 infection in early life. CONCLUSION A concerted research effort by a multidisciplinary team of scientists is needed to understand the links between environmental exposures, especially air pollution and COVID-19. We call for specific research funding to encourage basic and clinical research to understand if/why exposure to environmental factors is associated with more severe disease, why children appear to be protected, and how innate immune responses may be involved. Lessons learned about SARS-Cov-2 infection in our children will help us to understand and reduce disease severity in adults, the opposite of the usual scenario.
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Affiliation(s)
- Peter D Sly
- Children's Health and Environment Program, The University of Queensland, Brisbane, Australia
| | - Brittany A Trottier
- Superfund Research Program, National Institute of Environmental Health Sciences, 530 Davis Drive, Durham, NC, 27709, USA
| | - Catherine M Bulka
- Department of Environmental Sciences and Engineering, University of North Carolina, Chapel Hill, USA
| | - Stephania A Cormier
- LSU Superfund Research Program, Louisiana State University, Baton Rouge, USA
| | - Julius Fobil
- Department of Biological, Environmental and Occupational Health Science, University of Ghana, Accra, Ghana
| | - Rebecca C Fry
- Department of Environmental Sciences and Engineering, University of North Carolina, Chapel Hill, USA
| | - Kyoung-Woong Kim
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, Gwangju, South Korea
| | - Steven Kleeberger
- Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, Durham, USA
| | | | - Philip J Landrigan
- Schiller Institute for Integrated Science and Society, Boston College, Chestnut Hill, USA
| | - Karin C Lodrop Carlsen
- Division of Paediatric and Adolescent Medicine, University of Oslo & Oslo University Hospital, Oslo, Norway
| | - Antonio Pascale
- Department of Toxicology, Faculty of Medicine, University of the Republic, Montevideo, Uruguay
| | | | | | - Heather J Zar
- Dept of Paediatrics & Child Health and SA-MRC Unit on Child & Adolescent Health, University of Cape Town, Cape Town, South Africa
| | - William A Suk
- Superfund Research Program, National Institute of Environmental Health Sciences, 530 Davis Drive, Durham, NC, 27709, USA.
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9
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Abstract
This review portrays the metabolic consequences of Covid-19 infection at different stages of the clinical syndrome. It also describes how events can change when patients with metabolic problems are infected and the effects that diet and nutrition might play to influence the outcome of infection. We also discuss the types of maneuvers that could be used to reshape metabolic events and question if this approach could be a practical therapy used alone or in combination with other approaches to reduce the burden of Covid-19 infection.
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Affiliation(s)
- Engin Berber
- Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine, The University of Tennessee, Knoxville, TN, USA; Department of Virology, Faculty of Veterinary Medicine, Erciyes University, Kayseri, TR, Turkey
| | - Deepak Sumbria
- Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine, The University of Tennessee, Knoxville, TN, USA
| | - Barry T Rouse
- Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine, The University of Tennessee, Knoxville, TN, USA.
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10
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Beken B, Ozturk GK, Aygun FD, Aydogmus C, Akar HH. Asthma and allergic diseases are not risk factors for hospitalization in children with coronavirus disease 2019. Ann Allergy Asthma Immunol 2021; 126:569-575. [PMID: 33493639 PMCID: PMC7825986 DOI: 10.1016/j.anai.2021.01.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 01/02/2021] [Accepted: 01/19/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Coronavirus disease 2019 (COVID-19) emerged as a pandemic toward the end of 2019, causing large numbers of people to become infected and die. OBJECTIVE To determine whether allergic diseases are a risk factor for hospitalization in COVID-19. METHODS We conducted a study including 107 pediatric patients after COVID-19 recovery. The International Study of Asthma and Allergies in Childhood Phase 3 questionnaires were distributed together with a detailed history of environmental factors and an allergic evaluation including skin prick tests, specific immunoglobulin E tests, and spirometry. We investigated the prevalence of allergic diseases and evaluated the factors associated with hospitalization in COVID-19. RESULTS A total of 61 (57%) patients were hospitalized and 46 (43%) patients were followed closely in the outpatient clinic. The prevalences of allergic rhinitis, asthma, atopic dermatitis, and episodic wheezing were 10.3%, 6,5%, 4.7%, and 3.7%, respectively, within the whole study population. Although having asthma with or without allergic rhinitis, atopic dermatitis, and passive tobacco exposure were not found to be related to hospitalization because of COVID-19, having a pet at home was found to decrease the risk of hospitalization (odds ratio, 0.191; 95% confidence interval, 0.047-0.779; P = .02). Spirometry tests revealed a higher forced expiratory volume in one second to forced vital capacity ratio and a peak expiratory flow reversibility in hospitalized patients than in nonhospitalized ones (P = .02 and P = .003, respectively). CONCLUSION Asthma and allergic diseases do not seem to be risk factors for hospitalization in children because of COVID-19, and having a pet at home can be a protective effect. Pulmonary function testing seems to be important for monitoring lung damage after COVID-19.
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Affiliation(s)
- Burcin Beken
- Department of Pediatric Allergy and Immunology, Kanuni Sultan Suleyman Training, and Research Hospital, Istanbul, Turkey.
| | - Gokcen Kartal Ozturk
- Department of Pediatric Pulmonology, Kanuni Sultan Suleyman Training, and Research Hospital, Istanbul, Turkey
| | - Fatma Deniz Aygun
- Department of Pediatric Infectious Diseases, Kanuni Sultan Suleyman Training, and Research Hospital, Istanbul, Turkey
| | - Cigdem Aydogmus
- Department of Pediatric Allergy and Immunology, Kanuni Sultan Suleyman Training, and Research Hospital, Istanbul, Turkey
| | - Himmet Haluk Akar
- Department of Pediatric Allergy and Immunology, Kanuni Sultan Suleyman Training, and Research Hospital, Istanbul, Turkey
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11
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Pendu JL, Breiman A, Rocher J, Dion M, Ruvoën-Clouet N. ABO Blood Types and COVID-19: Spurious, Anecdotal, or Truly Important Relationships? A Reasoned Review of Available Data. Viruses 2021; 13:160. [PMID: 33499228 PMCID: PMC7911989 DOI: 10.3390/v13020160] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/19/2021] [Accepted: 01/19/2021] [Indexed: 12/19/2022] Open
Abstract
Since the emergence of COVID-19, many publications have reported associations with ABO blood types. Despite between-study discrepancies, an overall consensus has emerged whereby blood group O appears associated with a lower risk of COVID-19, while non-O blood types appear detrimental. Two major hypotheses may explain these findings: First, natural anti-A and anti-B antibodies could be partially protective against SARS-CoV-2 virions carrying blood group antigens originating from non-O individuals. Second, O individuals are less prone to thrombosis and vascular dysfunction than non-O individuals and therefore could be at a lesser risk in case of severe lung dysfunction. Here, we review the literature on the topic in light of these hypotheses. We find that between-study variation may be explained by differences in study settings and that both mechanisms are likely at play. Moreover, as frequencies of ABO phenotypes are highly variable between populations or geographical areas, the ABO coefficient of variation, rather than the frequency of each individual phenotype is expected to determine impact of the ABO system on virus transmission. Accordingly, the ABO coefficient of variation correlates with COVID-19 prevalence. Overall, despite modest apparent risk differences between ABO subtypes, the ABO blood group system might play a major role in the COVID-19 pandemic when considered at the population level.
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Affiliation(s)
- Jacques Le Pendu
- CRCINA, INSERM, Université de Nantes, F-44000 Nantes, France; (A.B.); (J.R.); (N.R.-C.)
| | - Adrien Breiman
- CRCINA, INSERM, Université de Nantes, F-44000 Nantes, France; (A.B.); (J.R.); (N.R.-C.)
- CHU de Nantes, F-44000 Nantes, France
| | - Jézabel Rocher
- CRCINA, INSERM, Université de Nantes, F-44000 Nantes, France; (A.B.); (J.R.); (N.R.-C.)
| | - Michel Dion
- Microbiotes Hosts Antibiotics and Bacterial Resistances (MiHAR), Université de Nantes, F-44000 Nantes, France;
| | - Nathalie Ruvoën-Clouet
- CRCINA, INSERM, Université de Nantes, F-44000 Nantes, France; (A.B.); (J.R.); (N.R.-C.)
- Oniris, Ecole Nationale Vétérinaire, Agroalimentaire et de l’Alimentation, F-44307 Nantes, France
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12
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Luo J, Liang S, Jin F. Gut microbiota in antiviral strategy from bats to humans: a missing link in COVID-19. Sci China Life Sci 2021; 64:942-956. [PMID: 33521857 PMCID: PMC7847806 DOI: 10.1007/s11427-020-1847-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 09/21/2020] [Indexed: 01/31/2023]
Abstract
Bats are a potential natural reservoir for SARS-CoV-2 virus and other viruses detrimental to humans. Accumulated evidence has shown that, in their adaptation to a flight-based lifestyle, remodeling of the gut microbiota in bats may have contributed to immune tolerance to viruses. This evidence from bats provides profound insights into the potential influence of gut microbiota in COVID-19 disease in humans. Here, we highlight recent advances in our understanding of the mechanisms by which the gut microbiota helps bats tolerate deadly viruses, and summarize the current clinical evidence on the influence of gut microbiota on the susceptibility to SARS-CoV-2 infection and risk of COVID-19 leading to a fatal outcome. In addition, we discuss the implications of gut microbiota-targeted approaches for preventing infection and reducing disease severity in COVID-19 patients.
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Affiliation(s)
- Jia Luo
- Department of Psychology, Sichuan Normal University, Chengdu, 610068, China
| | - Shan Liang
- Key Laboratory of Microbial Physiological and Metabolic Engineering, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Feng Jin
- Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, 100101, China.
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13
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Noroozi R, Branicki W, Pyrc K, Łabaj PP, Pospiech E, Taheri M, Ghafouri-Fard S. Altered cytokine levels and immune responses in patients with SARS-CoV-2 infection and related conditions. Cytokine 2020; 133:155143. [PMID: 32460144 PMCID: PMC7241386 DOI: 10.1016/j.cyto.2020.155143] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 05/17/2020] [Accepted: 05/19/2020] [Indexed: 01/06/2023]
Abstract
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused a global pandemic in early 2020. The infection has been associated with a wide range of clinical symptoms. In the severely affected patients, it has caused dysregulation of immune responses including over-secretion of inflammatory cytokines and imbalances in the proportion of naïve helper T cells, memory helper T cells and regulatory T cells. Identification of the underlying mechanism of such aberrant function of immune system would help in the prediction of disease course and selection of susceptible patients for more intensive cares. In the current review, we summarize the results of studies which reported alterations in cytokine levels and immune cell functions in patients affected with SARS-CoV-2 and related viruses.
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Affiliation(s)
- Rezvan Noroozi
- Malopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland
| | - Wojciech Branicki
- Malopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland
| | - Krzysztof Pyrc
- Malopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland
| | - Paweł P Łabaj
- Malopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland
| | - Ewelina Pospiech
- Malopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland
| | - Mohammad Taheri
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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14
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Zhu L, She ZG, Cheng X, Qin JJ, Zhang XJ, Cai J, Lei F, Wang H, Xie J, Wang W, Li H, Zhang P, Song X, Chen X, Xiang M, Zhang C, Bai L, Xiang D, Chen MM, Liu Y, Yan Y, Liu M, Mao W, Zou J, Liu L, Chen G, Luo P, Xiao B, Zhang C, Zhang Z, Lu Z, Wang J, Lu H, Xia X, Wang D, Liao X, Peng G, Ye P, Yang J, Yuan Y, Huang X, Guo J, Zhang BH, Li H. Association of Blood Glucose Control and Outcomes in Patients with COVID-19 and Pre-existing Type 2 Diabetes. Cell Metab 2020; 31:1068-1077.e3. [PMID: 32369736 PMCID: PMC7252168 DOI: 10.1016/j.cmet.2020.04.021] [Citation(s) in RCA: 1024] [Impact Index Per Article: 256.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 04/26/2020] [Accepted: 04/28/2020] [Indexed: 02/08/2023]
Abstract
Type 2 diabetes (T2D) is a major comorbidity of COVID-19. However, the impact of blood glucose (BG) control on the degree of required medical interventions and on mortality in patients with COVID-19 and T2D remains uncertain. Thus, we performed a retrospective, multi-centered study of 7,337 cases of COVID-19 in Hubei Province, China, among which 952 had pre-existing T2D. We found that subjects with T2D required more medical interventions and had a significantly higher mortality (7.8% versus 2.7%; adjusted hazard ratio [HR], 1.49) and multiple organ injury than the non-diabetic individuals. Further, we found that well-controlled BG (glycemic variability within 3.9 to 10.0 mmol/L) was associated with markedly lower mortality compared to individuals with poorly controlled BG (upper limit of glycemic variability exceeding 10.0 mmol/L) (adjusted HR, 0.14) during hospitalization. These findings provide clinical evidence correlating improved glycemic control with better outcomes in patients with COVID-19 and pre-existing T2D.
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Affiliation(s)
- Lihua Zhu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 410013, China; Institute of Model Animal, Wuhan University, Wuhan 430072, China
| | - Zhi-Gang She
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 410013, China; Institute of Model Animal, Wuhan University, Wuhan 430072, China
| | - Xu Cheng
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 410013, China; Institute of Model Animal, Wuhan University, Wuhan 430072, China
| | - Juan-Juan Qin
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 410013, China; Institute of Model Animal, Wuhan University, Wuhan 430072, China
| | - Xiao-Jing Zhang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 410013, China; Institute of Model Animal, Wuhan University, Wuhan 430072, China
| | - Jingjing Cai
- Department of Cardiology, The Third Xiangya Hospital, Central South University, Changsha 410000, China
| | - Fang Lei
- Institute of Model Animal, Wuhan University, Wuhan 430072, China
| | - Haitao Wang
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430072, China
| | - Jing Xie
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 410013, China
| | - Wenxin Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 410013, China; Institute of Model Animal, Wuhan University, Wuhan 430072, China
| | - Haomiao Li
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 410013, China; Institute of Model Animal, Wuhan University, Wuhan 430072, China
| | - Peng Zhang
- Institute of Model Animal, Wuhan University, Wuhan 430072, China; Medical Science Research Center, Zhongnan Hospital of Wuhan University, Wuhan 430072, China
| | - Xiaohui Song
- Institute of Model Animal, Wuhan University, Wuhan 430072, China
| | - Xi Chen
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430072, China
| | - Mei Xiang
- Department of Cardiology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430072, China
| | - Chaozheng Zhang
- Institute of Model Animal, Wuhan University, Wuhan 430072, China
| | - Liangjie Bai
- Institute of Model Animal, Wuhan University, Wuhan 430072, China
| | - Da Xiang
- Institute of Model Animal, Wuhan University, Wuhan 430072, China
| | - Ming-Ming Chen
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 410013, China; Institute of Model Animal, Wuhan University, Wuhan 430072, China
| | - Yanqiong Liu
- Institute of Model Animal, Wuhan University, Wuhan 430072, China
| | - Youqin Yan
- Wuhan Seventh Hospital, Wuhan 430072, China
| | - Mingyu Liu
- The Ninth Hospital of Wuhan City, Wuhan 430072, China
| | - Weiming Mao
- Department of General Surgery, Huanggang Central Hospital, Huanggang 438000, China
| | - Jinjing Zou
- Department of Pulmonary and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan 430072, China
| | - Liming Liu
- Department of General Surgery, Ezhou Central Hospital, Ezhou 436000, China
| | - Guohua Chen
- Department of Neurology, Wuhan First Hospital/Wuhan Hospital of Traditional Chinese and Western Medicine, Wuhan 430072, China
| | - Pengcheng Luo
- Department of Urology, Wuhan Third Hospital and Tongren Hospital of Wuhan University, Wuhan 430072, China
| | - Bing Xiao
- Department of Stomatology, Xiantao First People's Hospital, Xiantao 433000, China
| | - Changjiang Zhang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 410013, China; The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi 445000, China
| | - Zixiong Zhang
- The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi 445000, China
| | - Zhigang Lu
- Department of Neurology, The First People's Hospital of Jingmen affiliated to Hubei Minzu University, Jingmen 448000, China
| | - Junhai Wang
- Department of Orthopedics, The First People's Hospital of Jingmen affiliated to Hubei Minzu University, Jingmen 448000 China
| | - Haofeng Lu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Changjiang University, Jingzhou 434000, China
| | - Xigang Xia
- Department of Hepatobiliary Surgery, Jingzhou Central Hospital, Jingzhou 434000, China
| | - Daihong Wang
- Department of Hepatobiliary and Pancreatic Surgery, Xianning Central Hospital, Xianning 437000, China
| | - Xiaofeng Liao
- Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang 441000, China
| | - Gang Peng
- Department of Hepatobiliary and Pancreatic Surgery, Suizhou Central Hospital Affiliated to Hubei Medical College, Suizhou 441300, China
| | - Ping Ye
- Department of Cardiology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430072, China
| | - Jun Yang
- Department of Cardiology, The First College of Clinical Medical Science, China Three Gorges University and Yichang Central People's Hospital and Institute of Cardiovascular Diseases, China Three Gorges University, Yichang 443000, China
| | - Yufeng Yuan
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430072, China
| | - Xiaodong Huang
- Department of Gastroenterology, Wuhan Third Hospital and Tongren Hospital of Wuhan University, Wuhan 430072, China.
| | - Jiao Guo
- Guangdong Metabolic Diseases Research Center of Integrated Chinese and Western Medicine & Key Laboratory of Glucolipid Metabolic Disorder, Ministry of Education of China and Institute of Chinese Medicine, Guangdong Pharmaceutical University, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangzhou 510006, China.
| | - Bing-Hong Zhang
- Department of Neonatology, Renmin Hospital of Wuhan University, Wuhan 430072, China.
| | - Hongliang Li
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 410013, China; Institute of Model Animal, Wuhan University, Wuhan 430072, China; Medical Science Research Center, Zhongnan Hospital of Wuhan University, Wuhan 430072, China; Basic Medical School, Wuhan University, Wuhan 430072, China.
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15
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Benzarti E, Sarlet M, Franssen M, Desmecht D, Schmidt-Chanasit J, Garigliany MM. New Insights into the Susceptibility of Immunocompetent Mice to Usutu Virus. Viruses 2020; 12:v12020189. [PMID: 32046265 PMCID: PMC7077335 DOI: 10.3390/v12020189] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/29/2020] [Accepted: 02/05/2020] [Indexed: 01/08/2023] Open
Abstract
Usutu virus (USUV) is a mosquito-borne flavivirus that shares many similarities with the closely related West Nile virus (WNV) in terms of ecology and clinical manifestations. Initially distributed in Africa, USUV emerged in Italy in 1996 and managed to co-circulate with WNV in many European countries in a similar mosquito-bird life cycle. The rapid geographic spread of USUV, the seasonal mass mortalities it causes in the European avifauna, and the increasing number of infections with neurological disease both in healthy and immunocompromised humans has stimulated interest in infection studies to delineate USUV pathogenesis. Here, we assessed the pathogenicity of two USUV isolates from a recent Belgian outbreak in immunocompetent mice. The intradermal injection of USUV gave rise to disorientation and paraplegia and was associated with neuronal death in the brain and spinal cord in a single mouse. Intranasal inoculation of USUV could also establish the infection; viral RNA was detected in the brain 15 days post-infection. Overall, this pilot study probes the suitability of this murine model for the study of USUV neuroinvasiveness and the possibility of direct transmission in mammals.
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Affiliation(s)
- Emna Benzarti
- Fundamental and Applied Research for Animals & Health (FARAH), Faculty of Veterinary Medicine, University of Liège, Sart Tilman B43, B-4000 Liège, Belgium; (E.B.); (M.S.); (M.F.); (D.D.)
| | - Michaël Sarlet
- Fundamental and Applied Research for Animals & Health (FARAH), Faculty of Veterinary Medicine, University of Liège, Sart Tilman B43, B-4000 Liège, Belgium; (E.B.); (M.S.); (M.F.); (D.D.)
| | - Mathieu Franssen
- Fundamental and Applied Research for Animals & Health (FARAH), Faculty of Veterinary Medicine, University of Liège, Sart Tilman B43, B-4000 Liège, Belgium; (E.B.); (M.S.); (M.F.); (D.D.)
| | - Daniel Desmecht
- Fundamental and Applied Research for Animals & Health (FARAH), Faculty of Veterinary Medicine, University of Liège, Sart Tilman B43, B-4000 Liège, Belgium; (E.B.); (M.S.); (M.F.); (D.D.)
| | - Jonas Schmidt-Chanasit
- Bernhard Nocht Institute for Tropical Medicine, WHO Collaborating Centre for Arbovirus and Haemorrhagic Fever Reference and Research, 20359 Hamburg, Germany;
- Faculty of Mathematics, Informatics and Natural Sciences, University of Hamburg, 20354 Hamburg, Germany
| | - Mutien-Marie Garigliany
- Fundamental and Applied Research for Animals & Health (FARAH), Faculty of Veterinary Medicine, University of Liège, Sart Tilman B43, B-4000 Liège, Belgium; (E.B.); (M.S.); (M.F.); (D.D.)
- Correspondence:
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16
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Edmonds C, Lippmann J, Fock A. Immersion pulmonary edema: case reports from Oceania. Undersea Hyperb Med 2019; 46:581-601. [PMID: 31683356] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
INTRODUCTION We aimed to document identified cases of immersion pulmonary edema (IPE) in divers from Oceania (the Indo-Pacific region) from January 2002 to May 2018, inclusive. METHOD Cases were identified using various sources, including searches of the Divers Alert Network Asia-Pacific (DAN AP) Fatality Database, published case reports, and interviews with survivors who had reported their incident to DAN AP. Where available, investigations, pathology and autopsy results were obtained. Only incidents diagnosed as IPE by diving physicians or pathologists with experience in the investigation of diving accidents were included. Individual case histories and outcomes, together with brief individual summaries of the associations and possible contributing factors were recorded. RESULTS Thirty-one IPE incidents in divers from Oceania were documented. There were two surface snorkelers, 22 scuba air divers and seven nitrox divers which included three closed-circuit rebreathers (CCR). The mean (SD) age was 53 (12) years, 58% of victims were females, and the average dive profile was to a maximum depth of 19 meters of seawater for 25 minutes. Six victims (19%) had previous episodes of IPE. There were nine recorded fatalities. Cardiac anomalies dominated the associated or possible contributing factors. These included valvular disease in 29%, transient cardiomyopathies in 26% and dysrhythmias in 16%. CONCLUSIONS Previously reported associations of IPE such as exertion, stress, cold exposure, negative inspiratory pressure, hypertension, overhydration, ascent or surfacing, tight wetsuit, aspiration and certain medications were identified. Cardiac conditions were frequent and included chronic disorders (valvular pathology, coronary artery disease) and transient disorders (dysrhythmias, transient myocardial dysfunction, takotsubo or stress cardiomyopathy). It is likely that the chronic cardiac disorders may have contributed to the IPE, whereas the transient cases could be either sequelae, contributors or coincidental to the IPE.
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Affiliation(s)
| | - John Lippmann
- DAN Asia-Pacific Foundation/Australasian Diving Safety Foundation, Victoria, Australia
- Department of Public Health and Preventative Medicine, Monash University, Victoria, Australia
| | - Andrew Fock
- Department of Public Health and Preventative Medicine, Monash University, Victoria, Australia
- Departments of Hyperbaric Medicine and Intensive Care Medicine, The Alfred Hospital, Melbourne, Victoria, Australia
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Di Benedetto G, Burgaletto C, Carta AR, Saccone S, Lempereur L, Mulas G, Loreto C, Bernardini R, Cantarella G. Beneficial effects of curtailing immune susceptibility in an Alzheimer's disease model. J Neuroinflammation 2019; 16:166. [PMID: 31409354 PMCID: PMC6693231 DOI: 10.1186/s12974-019-1554-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 07/30/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Currently, there are no effective therapeutic options for Alzheimer's disease, the most common, multifactorial form of dementia, characterized by anomalous amyloid accumulation in the brain. Growing evidence points to neuroinflammation as a major promoter of AD. We have previously shown that the proinflammatory cytokine TNFSF10 fuels AD neuroinflammation, and that its immunoneutralization results in improved cognition in the 3xTg-AD mouse. METHODS Here, we hypothesize that inflammatory hallmarks of AD might parallel with central and peripheral immune response dysfunction. To verify such hypothesis, we used a triple transgenic mouse model of AD. 3xTg-AD mice were treated for 12 months with an anti-TNFSF10 antibody, and thereafter immune/inflammatory markers including COX2, iNOS, IL-1β and TNF-α, CD3, GITR, and FoxP3 (markers of regulatory T cells) were measured in the spleen as well as in the hippocampus. RESULTS Spleens displayed accumulation of amyloid-β1-42 (Aβ1-42), as well as high expression of Treg cell markers FoxP3 and GITR, in parallel with the increased levels of inflammatory markers COX2, iNOS, IL-1β and TNF-α, and blunted IL-10 expression. Moreover, CD3 expression was increased in the hippocampus, consistently with FoxP3 and GITR. After chronic treatment of 3xTg-AD mice with an anti-TNFSF10 antibody, splenic FoxP3, GITR, and the above-mentioned inflammatory markers expression was restored to basal levels, while expression of IL-10 was increased. A similar picture was observed in the hippocampus. Such improvement of peripheral and CNS inflammatory/immune response was associated with decreased microglial activity in terms of TNFα production, as well as decreased expression of both amyloid and phosphorylated tau protein in the hippocampus of treated 3xTg-AD mice. Interestingly, we also reported an increased expression of both CD3 and FoxP3, in sections from human AD brain. CONCLUSIONS We suggest that neuroinflammation in the brain of 3xTg-AD mice triggered by TNFSF10 might result in a more general overshooting of the immune response. Treatment with an anti-TNFSF10 antibody blunted inflammatory processes both in the spleen and hippocampus. These data confirm the detrimental role of TNFSF10 in neurodegeneration, and corroborate the hypothesis of the anti-TNFSF10 strategy as a potential treatment to improve outcomes in AD.
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Affiliation(s)
- Giulia Di Benedetto
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, University of Catania, Via Santa Sofia 97, 95123, Catania, Italy
| | - Chiara Burgaletto
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, University of Catania, Via Santa Sofia 97, 95123, Catania, Italy
| | - Anna R Carta
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - Salvatore Saccone
- Department of Biological, Geological and Environmental Sciences, Section of Animal Biology, University of Catania, Catania, Italy
| | - Laurence Lempereur
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, University of Catania, Via Santa Sofia 97, 95123, Catania, Italy
| | - Giovanna Mulas
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - Carla Loreto
- Department of Biomedical and Biotechnological Sciences, Section of Anatomy & Histology, University of Catania, Catania, Italy
| | - Renato Bernardini
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, University of Catania, Via Santa Sofia 97, 95123, Catania, Italy
| | - Giuseppina Cantarella
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, University of Catania, Via Santa Sofia 97, 95123, Catania, Italy.
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18
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Horn LC, Höhn AK, Stark S, Einenkel J, Borte G, Haak A, Siebolts U, Brambs CE. Endocervical adenocarcinoma in situ (AIS) with ovarian and pulmonary involvement: report of a case and review of the literature suggesting a "seed and soil hypothesis". J Cancer Res Clin Oncol 2019; 145:2061-2069. [PMID: 31309301 DOI: 10.1007/s00432-019-02966-4] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 07/01/2019] [Indexed: 11/26/2022]
Abstract
PURPOSE Cervical cancer metastases to the ovary may occur with advanced tumor stage, deep cervical stromal involvement and corpus involvement. Endocervical adenocarcinoma in situ (AIS) with ovarian involvement is exceptionally rare with about twelve reported cases. METHODS Here we present a case of endocervical AIS with ovarian and pulmonary involvement 39 months after the initial diagnosis. The characteristics of that case were compared and summarized with the eleven previously published cases. RESULTS The patients' age ranged between 30 and 40 years (median 37.4 years). The time interval between the diagnosis of AIS and ovarian involvement was 26.7 months (range 2-84 months). Majority of the patients are alive without evidence of disease after a median time of 63.4 months (range 9-156 months). All reported cases were positive for high-risk HPV which was associated with strong p16 expression on immunohistochemistry. CONCLUSIONS The ovarian involvement by endocervical AIS suggests the concept of a transtubal spread of the neoplastic cervical cells with or without previous colonization within the endometrium without evidence of invasive growth, suggesting a seed and soil spread of the disease. In cases with ovarian involvement by the AIS and without additional extragenital spread, the prognosis may be favorable.
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Affiliation(s)
- Lars-Christian Horn
- Division of Breast, Gynecologic and Perinatal Pathology, Institute of Pathology, University Hospital of Leipzig, Liebigstrasse 26, 04103, Leipzig, Germany.
| | - Anne Kathrin Höhn
- Division of Breast, Gynecologic and Perinatal Pathology, Institute of Pathology, University Hospital of Leipzig, Liebigstrasse 26, 04103, Leipzig, Germany
| | - Sylvia Stark
- Division of Oncologic Gynecology, Department of Obstetrics and Gynecology (Institute of Trier), University Hospital of Leipzig, Leipzig, Germany
| | - Jens Einenkel
- Division of Oncologic Gynecology, Department of Obstetrics and Gynecology (Institute of Trier), University Hospital of Leipzig, Leipzig, Germany
| | - Gudrun Borte
- Department of Diagnostic Radiology, University Hospital of Leipzig, Leipzig, Germany
| | - Anja Haak
- Department of Diagnostic Radiology, University Hospital of Leipzig, Leipzig, Germany
| | - Udo Siebolts
- Division Molecular Pathology, Institute of Pathology, University Hospital of Halle/Saale, Halle (Saale), Germany
| | - Christine E Brambs
- Department of Obstetrics and Gynecology, Technical University Munich, Munich, Germany
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19
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Polyzos AA, Lee DY, Datta R, Hauser M, Budworth H, Holt A, Mihalik S, Goldschmidt P, Frankel K, Trego K, Bennett MJ, Vockley J, Xu K, Gratton E, McMurray CT. Metabolic Reprogramming in Astrocytes Distinguishes Region-Specific Neuronal Susceptibility in Huntington Mice. Cell Metab 2019; 29:1258-1273.e11. [PMID: 30930170 PMCID: PMC6583797 DOI: 10.1016/j.cmet.2019.03.004] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 10/25/2018] [Accepted: 03/05/2019] [Indexed: 12/23/2022]
Abstract
The basis for region-specific neuronal toxicity in Huntington disease is unknown. Here, we show that region-specific neuronal vulnerability is a substrate-driven response in astrocytes. Glucose is low in HdhQ(150/150) animals, and astrocytes in each brain region adapt by metabolically reprogramming their mitochondria to use endogenous, non-glycolytic metabolites as an alternative fuel. Each region is characterized by distinct metabolic pools, and astrocytes adapt accordingly. The vulnerable striatum is enriched in fatty acids, and mitochondria reprogram by oxidizing them as an energy source but at the cost of escalating reactive oxygen species (ROS)-induced damage. The cerebellum is replete with amino acids, which are precursors for glucose regeneration through the pentose phosphate shunt or gluconeogenesis pathways. ROS is not elevated, and this region sustains little damage. While mhtt expression imposes disease stress throughout the brain, sensitivity or resistance arises from an adaptive stress response, which is inherently region specific. Metabolic reprogramming may have relevance to other diseases.
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Affiliation(s)
- Aris A Polyzos
- Division of Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Do Yup Lee
- Division of Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Rupsa Datta
- Laboratory for Fluorescence Dynamics, Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92697, USA
| | - Meghan Hauser
- Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Helen Budworth
- Division of Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Amy Holt
- Division of Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Stephanie Mihalik
- Department of Pediatrics at Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, PA 15224, USA
| | - Pike Goldschmidt
- Division of Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Ken Frankel
- Division of Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Kelly Trego
- Division of Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Michael J Bennett
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Jerry Vockley
- Department of Pediatrics at Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, PA 15224, USA
| | - Ke Xu
- Division of Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Enrico Gratton
- Laboratory for Fluorescence Dynamics, Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92697, USA
| | - Cynthia T McMurray
- Division of Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
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Ganchua SKC, Cadena AM, Maiello P, Gideon HP, Myers AJ, Junecko BF, Klein EC, Lin PL, Mattila JT, Flynn JL. Lymph nodes are sites of prolonged bacterial persistence during Mycobacterium tuberculosis infection in macaques. PLoS Pathog 2018; 14:e1007337. [PMID: 30383808 PMCID: PMC6211753 DOI: 10.1371/journal.ppat.1007337] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 09/13/2018] [Indexed: 02/07/2023] Open
Abstract
Tuberculosis is commonly considered a chronic lung disease, however, extrapulmonary infection can occur in any organ. Even though lymph nodes (LN) are among the most common sites of extrapulmonary Mycobacterium tuberculosis (Mtb) infection, and thoracic LNs are frequently infected in humans, bacterial dynamics and the effect of Mtb infection in LN structure and function is relatively unstudied. We surveyed thoracic LNs from Mtb-infected cynomolgus and rhesus macaques analyzing PET CT scans, bacterial burden, LN structure and immune function. FDG avidity correlated with the presence of live bacteria in LNs at necropsy. Lymph nodes have different trajectories (increasing, maintaining, decreasing in PET activity over time) even within the same animal. Rhesus macaques are more susceptible to Mtb infection than cynomolgus macaques and this is in part due to more extensive LN pathology. Here, we show that Mtb grows to the same level in cynomolgus and rhesus macaque LNs, however, cynomolgus macaques control Mtb at later time points post-infection while rhesus macaques do not. Notably, compared to lung granulomas, LNs are generally poor at killing Mtb, even with drug treatment. Granulomas that form in LNs lack B cell-rich tertiary lymphoid structures, disrupt LN structure by pushing out T cells and B cells, introduce large numbers of macrophages that can serve as niches for Mtb, and destroy normal vasculature. Our data support that LNs are not only sites of antigen presentation and immune activation during infection, but also serve as important sites for persistence of significant numbers of Mtb bacilli. Since tuberculosis is commonly considered a chronic lung disease, most studies in tuberculosis focus on the lungs while lymph nodes are almost always depicted only as sites of antigen presentation and immune activation. However, lymph nodes are among the most frequently infected sites of Mycobacterium tuberculosis (Mtb) aside from the lungs. The effect of Mtb infection and how lymph nodes respond to Mtb infection is currently unknown. To investigate this, we examined the lymph nodes of two macaque species, cynomolgus and rhesus macaques, at different time points after Mtb infection. We found that overall lymph nodes are not effective killers of Mtb; the lymph nodes of rhesus macaques being less effective at killing Mtb than cynomolgus macaques. Mtb infection also resulted in the destruction of the lymph node structure and this was associated with increased bacterial burden. After a short course of anti-TB drug therapy, the reduction in bacterial burden was lower in lymph nodes compared to lung granulomas. Our data show that aside from being sites of antigen presentation and immune activation, lymph nodes are also niches of Mtb growth and persistence.
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Affiliation(s)
- Sharie Keanne C. Ganchua
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Anthony M. Cadena
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Pauline Maiello
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Hannah P. Gideon
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Amy J. Myers
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Beth F. Junecko
- Department of Infectious Disease and Microbiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania, United States of America
| | - Edwin C. Klein
- Division of Laboratory Animal Resources, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Philana Ling Lin
- Department of Pediatrics, Children’s Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, United States of America
| | - Joshua T. Mattila
- Department of Infectious Disease and Microbiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania, United States of America
| | - JoAnne L. Flynn
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
- * E-mail:
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Zheng SF, Bao RK, Zhang QJ, Wang SC, Lin HJ. Endogenous Hydrogen Sulfide Promotes Apoptosis via Mitochondrial Pathways in the Livers of Broilers with Selenium Deficiency Exudative Diathesis Disease. Biol Trace Elem Res 2018. [PMID: 29524194 DOI: 10.1007/s12011-018-1292-3] [Citation(s) in RCA: 7] [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] [Indexed: 10/17/2022]
Abstract
Hydrogen sulfide (H2S), an endogenous gasotransmitter, plays an important role in apoptosis. Exudative diathesis (ED) disease is associated with dietary selenium (Se) deficiency in broilers. The liver is one of the target organs of Se deficiency; however, little is known about the effect of H2S on apoptosis via mitochondrial pathways in the livers of broilers with ED disease. In the present study, we aimed to investigate the correlation between endogenous H2S and mitochondrial-mediated apoptosis in the livers of broilers with ED disease, as induced by Se deficiency. One hundred twenty healthy, 1-day-old broilers were randomly assigned to one of two groups (60 each) based on diet: Basal diet (control group, 0.2 mg/kg Se) or a low-Se diet (-Se group, 0.033 mg/kg Se). At day 20, 15 broilers of a similar weight were sacrificed from the control group, while the same number of broilers were euthanatized from the -Se group when displaying typical symptoms of ED between days 18 and 25. The livers were collected, and apoptosis was measured using a TUNEL assay. Additionally, H2S concentration, the expression of H2S synthases of cystathionine γ-lyase (CSE), cystathionine β-synthase (CBS), and 3-mercaptopyruvate sulfurtransferase (3-MST), as well as mitochondrial apoptosis-related genes of Bcl-2, Bax, Bak, Cyt-C, Caspase-9, Caspase-3, and p53, were examined in livers. The results indicated that Se deficiency could induce apoptosis in the livers of broilers. Swelling, fractures, and vacuolization were visible in the mitochondrial cristae in the livers of the -Se group. The expression of H2S synthase-related genes and H2S concentration was significantly enhanced (P < 0.05) in the livers of the -Se group compared to controls. Moreover, a low-Se diet downregulated (P < 0.05) the level of Bcl-2 and upregulated (P < 0.05) the levels of Bax, Bak, Cyt-C, Caspase-9, Caspase-3, and p53. These results suggest that an H2S increase in the livers of ED broilers, which was induced by Se deficiency, is related to apoptosis mediated by mitochondrial pathways.
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Affiliation(s)
- Shu-Fang Zheng
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Rong-Kun Bao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Qiao-Jian Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Sheng-Chen Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Hong-Jin Lin
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P. R. China.
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, Northeast Agricultural University, Harbin, 150030, P. R. China.
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22
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Olson PD, McLellan LK, Hreha TN, Liu A, Briden KE, Hruska KA, Hunstad DA. Androgen exposure potentiates formation of intratubular communities and renal abscesses by Escherichia coli. Kidney Int 2018; 94:502-513. [PMID: 30041870 DOI: 10.1016/j.kint.2018.04.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [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: 02/01/2018] [Revised: 04/02/2018] [Accepted: 04/19/2018] [Indexed: 11/18/2022]
Abstract
Females across their lifespan and certain male populations are susceptible to urinary tract infections (UTI). The influence of female vs. male sex on UTI is incompletely understood, in part because preclinical modeling has been performed almost exclusively in female mice. Here, we employed established and new mouse models of UTI with uropathogenic Escherichia coli (UPEC) to investigate androgen influence on UTI pathogenesis. Susceptibility to UPEC UTI in both male and female hosts was potentiated with 5α-dihydrotestosterone, while males with androgen receptor deficiency and androgenized females treated with the androgen receptor antagonist enzalutamide were protected from severe pyelonephritis. In androgenized females and in males, UPEC formed dense intratubular, biofilm-like communities, some of which were sheltered from infiltrating leukocytes by the tubular epithelium and by peritubular fibrosis. Abscesses were nucleated by small intratubular collections of UPEC first visualized at five days postinfection and briskly expanded over the subsequent 24 hours. Male mice deficient in Toll-like receptor 4, which fail to contain UPEC within abscesses, were susceptible to lethal dissemination. Thus, androgen receptor activation imparts susceptibility to severe upper-tract UTI in both female and male murine hosts. Visualization of intratubular UPEC communities illuminates early renal abscess pathogenesis and the role of abscess formation in preventing dissemination of infection. Additionally, our study suggests that androgen modulation may represent a novel therapeutic route to combat recalcitrant or recurrent UTI in a range of patient populations.
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Affiliation(s)
- Patrick D Olson
- Medical Scientist Training Program, Washington University School of Medicine, St. Louis, Missouri, USA; Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Lisa K McLellan
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA; Division of Biology and Biomedical Sciences, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Teri N Hreha
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Alice Liu
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Kelleigh E Briden
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Keith A Hruska
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA; Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - David A Hunstad
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA; Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, Missouri, USA.
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23
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Iyer JK, Kalra M, Kaul A, Payton ME, Kaul R. Estrogen receptor expression in chronic hepatitis C and hepatocellular carcinoma pathogenesis. World J Gastroenterol 2017; 23:6802-6816. [PMID: 29085224 PMCID: PMC5645614 DOI: 10.3748/wjg.v23.i37.6802] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/12/2017] [Accepted: 07/24/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate gender-specific liver estrogen receptor (ER) expression in normal subjects and patients with hepatitis C virus (HCV)-related cirrhosis and hepatocellular carcinoma (HCC).
METHODS Liver tissues from normal donors and patients diagnosed with HCV-related cirrhosis and HCV-related HCC were obtained from the NIH Liver Tissue and Cell Distribution System. The expression of ER subtypes, ERα and ERβ, were evaluated by Western blotting and real-time RT-PCR. The subcellular distribution of ERα and ERβ was further determined in nuclear and cytoplasmic tissue lysates along with the expression of inflammatory [activated NF-κB and IκB-kinase (IKK)] and oncogenic (cyclin D1) markers by Western blotting and immunohistochemistry. The expression of ERα and ERβ was correlated with the expression of activated NF-κB, activated IKK and cyclin D1 by Spearman’s correlation.
RESULTS Both ER subtypes were expressed in normal livers but male livers showed significantly higher expression of ERα than females (P < 0.05). We observed significantly higher mRNA expression of ERα in HCV-related HCC liver tissues as compared to normals (P < 0.05) and ERβ in livers of HCV-related cirrhosis and HCV-related HCC subjects (P < 0.05). At the protein level, there was a significantly higher expression of nuclear ERα in livers of HCV-related HCC patients and nuclear ERβ in HCV-related cirrhosis patients as compared to normals (P < 0.05). Furthermore, we observed a significantly higher expression of phosphorylated NF-κB and cyclin D1 in diseased livers (P < 0.05). There was a positive correlation between the expression of nuclear ER subtypes and nuclear cyclin D1 and a negative correlation between cytoplasmic ER subtypes and cytoplasmic phosphorylated IKK in HCV-related HCC livers. These findings suggest that dysregulated expression of ER subtypes following chronic HCV-infection may contribute to the progression of HCV-related cirrhosis to HCV-related HCC.
CONCLUSION Gender differences were observed in ERα expression in normal livers. Alterations in ER subtype expression observed in diseased livers may influence gender-related disparity in HCV-related pathogenesis.
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Affiliation(s)
- Janaki K Iyer
- Department of Biochemistry and Microbiology, Oklahoma State University-Center for Health Sciences, Tulsa, OK 74107, United States
- (Current Affiliation) Department of Natural Sciences, Northeastern State University, Tahlequah, OK 74464, United States
| | - Mamta Kalra
- Immatics US Inc, Houston, TX 77077, United States
| | - Anil Kaul
- Health Care Administration, Oklahoma State University-Center for Health Sciences, Tulsa, OK 74107, United States
| | - Mark E Payton
- Department of Statistics, Oklahoma State University, Stillwater, OK 74078, United States
| | - Rashmi Kaul
- Department of Biochemistry and Microbiology, Oklahoma State University-Center for Health Sciences, Tulsa, OK 74107, United States
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24
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Boyce WT. Differential Susceptibility of the Developing Brain to Contextual Adversity and Stress. Neuropsychopharmacology 2016; 41:142-62. [PMID: 26391599 PMCID: PMC4677150 DOI: 10.1038/npp.2015.294] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 09/11/2015] [Accepted: 09/15/2015] [Indexed: 02/08/2023]
Abstract
A swiftly growing volume of literature, comprising both human and animal studies and employing both observational and experimental designs, has documented striking individual differences in neurobiological sensitivities to environmental circumstances within subgroups of study samples. This differential susceptibility to social and physical environments operates bidirectionally, in both adverse and beneficial contexts, and results in a minority subpopulation with remarkably poor or unusually positive trajectories of health and development, contingent upon the character of environmental conditions. Differences in contextual susceptibility appear to emerge in early development, as the interactive and adaptive product of genetic and environmental attributes. This paper surveys what is currently known of the mechanisms or mediators of differential susceptibility, at the levels of temperament and behavior, physiological systems, brain circuitry and neuronal function, and genetic and epigenetic variation. It concludes with the assertion that differential susceptibility is inherently grounded within processes of biological moderation, the complexities of which are at present only partially understood.
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Affiliation(s)
- W Thomas Boyce
- Departments of Pediatrics and Psychiatry, University of California, San Francisco, San Francisco, CA, USA
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25
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Oldfield EH, Vance ML, Louis RG, Pledger CL, Jane JA, Lopes MBS. Crooke's Changes In Cushing's Syndrome Depends on Degree of Hypercortisolism and Individual Susceptibility. J Clin Endocrinol Metab 2015; 100:3165-71. [PMID: 26147609 DOI: 10.1210/jc.2015-2493] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [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: 11/19/2022]
Abstract
CONTEXT Although Crooke's changes in the pituitary corticotrophs were initially described in 1935, the prevalence in which the changes occur in patients with Cushing's syndrome (CS) has not been established. OBJECTIVE This study aimed to determine the prevalence and assess clinical features associated with the presence or absence of Crooke's changes in a large set of patients with CS. DESIGN Information from a prospective computer database and retrospective chart review was analyzed. SETTING The setting was an academic medical center. PATIENTS Consecutive patients (N = 213) who received surgery with a preoperative diagnosis of Cushing's disease are included. INTERVENTION The patients received pituitary surgery and specimens obtained underwent pathological analysis. MAIN OUTCOME MEASURE The presence or absence of Crooke's changes was determined by histopathological analysis of the normal pituitary tissue included with the specimen obtained at surgery. Cortisol production was measured by 24-hour urine cortisol production. RESULTS Crooke's changes occurred in 144 of 177 patients (81%) with a histologically demonstrated ACTH-staining tumor and in 74% of 213 patients diagnosed with CS who had pituitary surgery. The presence of Crooke's changes correlated with the finding of an ACTH-staining tumor removed at surgery and with the degree of hypercortisolism. Among patients with histologically established ACTH-staining tumors the prevalence of Crooke's changes was particularly high in patients with a 24-h urinary free cortisol (UFC) of at least 4-fold the upper limit of normal, in which 91% of patients had Crooke's changes, compared with 74% of patients whose maximum UFC was less than 4-fold the upper limit of normal (P = .008). CONCLUSIONS Crooke's changes occur in 75-80% of patients with CS, and depend on the degree of hypercortisolism and individual variability. Almost all patients with UFC at least 4-fold the upper limit of normal have them, whereas with less severe hypercortisolism the expression of Crooke's changes varies from person to person.
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Affiliation(s)
- Edward H Oldfield
- Department of Neurological Surgery (E.H.O., R.G.L., C.L.P., J.A.J), Department of Medicine (M.L.V.), and Department of Pathology (M.-B.S.L.), University of Virginia Health System, Charlottesville, VA 22903
| | - Mary Lee Vance
- Department of Neurological Surgery (E.H.O., R.G.L., C.L.P., J.A.J), Department of Medicine (M.L.V.), and Department of Pathology (M.-B.S.L.), University of Virginia Health System, Charlottesville, VA 22903
| | - Robert G Louis
- Department of Neurological Surgery (E.H.O., R.G.L., C.L.P., J.A.J), Department of Medicine (M.L.V.), and Department of Pathology (M.-B.S.L.), University of Virginia Health System, Charlottesville, VA 22903
| | - Carrie L Pledger
- Department of Neurological Surgery (E.H.O., R.G.L., C.L.P., J.A.J), Department of Medicine (M.L.V.), and Department of Pathology (M.-B.S.L.), University of Virginia Health System, Charlottesville, VA 22903
| | - John A Jane
- Department of Neurological Surgery (E.H.O., R.G.L., C.L.P., J.A.J), Department of Medicine (M.L.V.), and Department of Pathology (M.-B.S.L.), University of Virginia Health System, Charlottesville, VA 22903
| | - Maria-Beatriz S Lopes
- Department of Neurological Surgery (E.H.O., R.G.L., C.L.P., J.A.J), Department of Medicine (M.L.V.), and Department of Pathology (M.-B.S.L.), University of Virginia Health System, Charlottesville, VA 22903
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Hodes GE, Pfau ML, Leboeuf M, Golden SA, Christoffel DJ, Bregman D, Rebusi N, Heshmati M, Aleyasin H, Warren BL, Lebonté B, Horn S, Lapidus KA, Stelzhammer V, Wong EHF, Bahn S, Krishnan V, Bolaños-Guzman CA, Murrough JW, Merad M, Russo SJ. Individual differences in the peripheral immune system promote resilience versus susceptibility to social stress. Proc Natl Acad Sci U S A 2014. [PMID: 25331895 DOI: 10.1073/pnas.1415191111/-/dcsupplemental] [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] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
Abstract
Depression and anxiety disorders are associated with increased release of peripheral cytokines; however, their functional relevance remains unknown. Using a social stress model in mice, we find preexisting individual differences in the sensitivity of the peripheral immune system that predict and promote vulnerability to social stress. Cytokine profiles were obtained 20 min after the first social stress exposure. Of the cytokines regulated by stress, IL-6 was most highly up-regulated only in mice that ultimately developed a susceptible behavioral phenotype following a subsequent chronic stress, and levels remained elevated for at least 1 mo. We confirmed a similar elevation of serum IL-6 in two separate cohorts of patients with treatment-resistant major depressive disorder. Before any physical contact in mice, we observed individual differences in IL-6 levels from ex vivo stimulated leukocytes that predict susceptibility versus resilience to a subsequent stressor. To shift the sensitivity of the peripheral immune system to a pro- or antidepressant state, bone marrow (BM) chimeras were generated by transplanting hematopoietic progenitor cells from stress-susceptible mice releasing high IL-6 or from IL-6 knockout (IL-6(-/-)) mice. Stress-susceptible BM chimeras exhibited increased social avoidance behavior after exposure to either subthreshold repeated social defeat stress (RSDS) or a purely emotional stressor termed witness defeat. IL-6(-/-) BM chimeric and IL-6(-/-) mice, as well as those treated with a systemic IL-6 monoclonal antibody, were resilient to social stress. These data establish that preexisting differences in stress-responsive IL-6 release from BM-derived leukocytes functionally contribute to social stress-induced behavioral abnormalities.
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Affiliation(s)
- Georgia E Hodes
- Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Madeline L Pfau
- Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Marylene Leboeuf
- Departments of Gene and Cell Medicine, Oncological Sciences, and
| | - Sam A Golden
- Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Daniel J Christoffel
- Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Dana Bregman
- Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Nicole Rebusi
- Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Mitra Heshmati
- Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Hossein Aleyasin
- Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Brandon L Warren
- Department of Psychology, Florida State University, Tallahassee, FL 32306-4301
| | - Benoit Lebonté
- Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Sarah Horn
- Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Kyle A Lapidus
- Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029; Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Viktoria Stelzhammer
- Institute of Biotechnology, Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB2 1QT, United Kingdom; Department of Neuroscience, Erasmus Medical Center, NL 3000 CA Rotterdam, The Netherlands
| | - Erik H F Wong
- CNS-Pain Innovative Medicine Unit, External Science, AstraZeneca Pharmaceuticals, Wilmington, DE 19850; and
| | - Sabine Bahn
- Institute of Biotechnology, Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB2 1QT, United Kingdom; Department of Neuroscience, Erasmus Medical Center, NL 3000 CA Rotterdam, The Netherlands
| | - Vaishnav Krishnan
- Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA 02215
| | | | - James W Murrough
- Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029; Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Miriam Merad
- Departments of Gene and Cell Medicine, Oncological Sciences, and
| | - Scott J Russo
- Fishberg Department of Neuroscience and Freidman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029;
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Abstract
Growth Arrest Specific Gene 1 (Gas1) has long been regarded as a cell cycle inhibitor of the G(0) to S phase transition. How GAS1, a GPI-anchored plasma membrane protein, directs intracellular changes without an extracellular ligand or a transmembrane protein partner has been puzzling. A recent series of biochemical and molecular genetic studies assigned the mammalian Hedgehog (HH) growth factor to be a ligand for GAS1 in vitro and in vivo. HH has enjoyed considerable attention for its profound role in embryonic patterning as a classic morphogen, i.e. inducing various cell types in a concentration-dependent manner. GAS1 appears to help transform the HH concentration gradient into its morphogenic activity gradient by acting cooperatively with the HH receptor, the 12-transmembrane protein Patched 1 (PTC1). These findings provoke intriguing thoughts on how HH and GAS1 may coordinate cell proliferation and differentiation to create biological patterns. The role of HH extends to human genetic diseases, stem cell renewal, and cancer growth, and we consider the possibility of GAS1's involvement in these processes as well.
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Affiliation(s)
- David C Martinelli
- Department of Embryology, Carnegie Institution of Washington, Baltimore, Maryland 21218, USA.
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Bond JJ, Pernthaner A, Zhang K, Rosanowski SM, Clerens S, Bisset SA, Sutherland IAS, Koolaard JP, Hein WR. Efferent intestinal lymph protein responses in nematode-resistant, -resilient and -susceptible lambs under challenge with Trichostrongylus colubriformis. J Proteomics 2014; 109:356-67. [PMID: 25072800 DOI: 10.1016/j.jprot.2014.07.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 03/26/2014] [Revised: 07/15/2014] [Accepted: 07/16/2014] [Indexed: 11/17/2022]
Abstract
UNLABELLED The mechanisms underlying resistance to challenge by gastrointestinal nematode parasites in sheep are complex. Using DIGE, we profiled ovine lymph proteins in lambs with host resistance (R), resilience (Ri) or susceptibility (S) to a daily trickle challenge with the nematode Trichostrongylus colubriformis. Efferent intestinal lymph was collected prior to infection (day 1) and on days 5 and 10 post-infection. Eight proteins identified by LC-MS/MS, showed differences relating to host genotype. Of these, Serpin A3-3 and Serpin A3-7 have not been reported previously in the lymph proteome. Three acute phase proteins showed significant differences relating to interactions between breeding line and parasite challenge, including complement C3β, C3α and haptoglobin (Hp) β. In the R lambs C3α was significantly up regulated (P<0.05) on day 10, while in the Ri lambs Hp β was significantly down regulated (P<0.05). In the S lambs, levels of C3β were up regulated and levels of Hp β down regulated (both P<0.05) on day 10. Hence we demonstrate that acute phase inflammation proteins contribute to differences in the innate immune response of sheep to challenge by T. colubriformis. The findings may lead to the development of new approaches to combat nematode infestations in sheep production systems. BIOLOGICAL SIGNIFICANCE Breeding lines of sheep with resistance (R), resilience (Ri) or susceptibility (S) to nematode infections provide an experimental model to examine the biological mechanisms underlying the ability of some sheep to expel worms and remain healthy without the use of an anthelmintic. Using proteomics we identified differences in the expression of acute phase lymph proteins in the R, Ri and S lambs. The results will assist the development of alternative control strategies to manage nematode infections in livestock.
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Affiliation(s)
- J J Bond
- AgResearch Ltd, Grasslands Research Centre, Palmerston North, New Zealand; Centre for Biodiscovery, Victoria University of Wellington, Wellington, New Zealand.
| | - A Pernthaner
- AgResearch Ltd, The Hopkirk Research Institute, Palmerston North, New Zealand
| | - K Zhang
- AgResearch Ltd, Grasslands Research Centre, Palmerston North, New Zealand; Centre for Biodiscovery, Victoria University of Wellington, Wellington, New Zealand
| | - S M Rosanowski
- AgResearch Ltd, The Hopkirk Research Institute, Palmerston North, New Zealand
| | - S Clerens
- AgResearch Ltd, Lincoln Research Centre, Christchurch, New Zealand
| | - S A Bisset
- AgResearch Ltd, The Hopkirk Research Institute, Palmerston North, New Zealand
| | - I A S Sutherland
- AgResearch Ltd, The Hopkirk Research Institute, Palmerston North, New Zealand
| | - J P Koolaard
- AgResearch Ltd, Grasslands Research Centre, Palmerston North, New Zealand
| | - W R Hein
- AgResearch Ltd, The Hopkirk Research Institute, Palmerston North, New Zealand
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Ramis A, van Amerongen G, van de Bildt M, Leijten L, Vanderstichel R, Osterhaus A, Kuiken T. Experimental infection of highly pathogenic avian influenza virus H5N1 in black-headed gulls (Chroicocephalus ridibundus). Vet Res 2014; 45:84. [PMID: 25135340 PMCID: PMC4189156 DOI: 10.1186/s13567-014-0084-9] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Accepted: 07/30/2014] [Indexed: 11/12/2022] Open
Abstract
Historically, highly pathogenic avian influenza viruses (HPAIV) rarely resulted in infection or clinical disease in wild birds. However, since 2002, disease and mortality from natural HPAIV H5N1 infection have been observed in wild birds including gulls. We performed an experimental HPAIV H5N1 infection of black-headed gulls (Chroicocephalus ridibundus) to determine their susceptibility to infection and disease from this virus, pattern of viral shedding, clinical signs, pathological changes and viral tissue distribution. We inoculated sixteen black-headed gulls with 1 × 10(4) median tissue culture infectious dose HPAIV H5N1 (A/turkey/Turkey/1/2005) intratracheally and intraesophageally. Birds were monitored daily until 12 days post inoculation (dpi). Oropharyngeal and cloacal swabs were collected daily to detect viral shedding. Necropsies from birds were performed at 2, 4, 5, 6, 7, and 12 dpi. Sampling from selected tissues was done for histopathology, immunohistochemical detection of viral antigen, PCR, and viral isolation. Our study shows that all inoculated birds were productively infected, developed systemic disease, and had a high morbidity and mortality rate. Virus was detected mainly in the respiratory tract on the first days after inoculation, and then concentrated more in pancreas and central nervous system from 4 dpi onwards. Birds shed infectious virus until 7 dpi from the pharynx and 6 dpi from the cloaca. We conclude that black-headed gulls are highly susceptible to disease with a high mortality rate and are thus more likely to act as sentinel species for the presence of the virus than as long-distance carriers of the virus to new geographical areas.
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Affiliation(s)
- Antonio Ramis
- />CReSA and Departament de Sanitat i Anatomia Animals, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - Geert van Amerongen
- />Department of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Marco van de Bildt
- />Department of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Loneke Leijten
- />Department of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Raphael Vanderstichel
- />Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Canada
| | - Albert Osterhaus
- />Department of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Thijs Kuiken
- />Department of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands
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30
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Tognin S, Riecher-Rössler A, Meisenzahl EM, Wood SJ, Hutton C, Borgwardt SJ, Koutsouleris N, Yung AR, Allen P, Phillips LJ, McGorry PD, Valli I, Velakoulis D, Nelson B, Woolley J, Pantelis C, McGuire P, Mechelli A. Reduced parahippocampal cortical thickness in subjects at ultra-high risk for psychosis. Psychol Med 2014; 44:489-498. [PMID: 23659473 PMCID: PMC3880065 DOI: 10.1017/s0033291713000998] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Revised: 04/06/2013] [Accepted: 04/11/2013] [Indexed: 12/21/2022]
Abstract
BACKGROUND Grey matter volume and cortical thickness represent two complementary aspects of brain structure. Several studies have described reductions in grey matter volume in people at ultra-high risk (UHR) of psychosis; however, little is known about cortical thickness in this group. The aim of the present study was to investigate cortical thickness alterations in UHR subjects and compare individuals who subsequently did and did not develop psychosis. METHOD We examined magnetic resonance imaging data collected at four different scanning sites. The UHR subjects were followed up for at least 2 years. Subsequent to scanning, 50 UHR subjects developed psychosis and 117 did not. Cortical thickness was examined in regions previously identified as sites of neuroanatomical alterations in UHR subjects, using voxel-based cortical thickness. RESULTS At baseline UHR subjects, compared with controls, showed reduced cortical thickness in the right parahippocampal gyrus (p < 0.05, familywise error corrected). There were no significant differences in cortical thickness between the UHR subjects who later developed psychosis and those who did not. CONCLUSIONS These data suggest that UHR symptomatology is characterized by alterations in the thickness of the medial temporal cortex. We did not find evidence that the later progression to psychosis was linked to additional alterations in cortical thickness, although we cannot exclude the possibility that the study lacked sufficient power to detect such differences.
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Affiliation(s)
- S. Tognin
- Department of Psychosis Studies, Institute of Psychiatry, King's College London, London, UK
| | - A. Riecher-Rössler
- Center for Gender Research and Early Detection, University of Basel Psychiatric Clinics, c/o University Hospital Basel, Petersgraben, Basel, Switzerland
| | - E. M. Meisenzahl
- Departments of Psychiatry and Psychotherapy, Ludwig-Maximilians-University, Munich, Germany
| | - S. J. Wood
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, The University of Melbourne and Melbourne Health, Victoria, Australia
- School of Psychology, University of Birmingham, Birmingham, UK
| | - C. Hutton
- Wellcome Trust Centre for Neuroimaging, UCL Institute of Neurology, University College London, London, UK
| | - S. J. Borgwardt
- Center for Gender Research and Early Detection, University of Basel Psychiatric Clinics, c/o University Hospital Basel, Petersgraben, Basel, Switzerland
| | - N. Koutsouleris
- Departments of Psychiatry and Psychotherapy, Ludwig-Maximilians-University, Munich, Germany
| | - A. R. Yung
- Orygen Research Centre, University of Melbourne, Victoria, Australia
| | - P. Allen
- Department of Psychosis Studies, Institute of Psychiatry, King's College London, London, UK
| | - L. J. Phillips
- Psychological Sciences, University of Melbourne, Victoria, Australia
| | - P. D. McGorry
- Orygen Research Centre, University of Melbourne, Victoria, Australia
| | - I. Valli
- Department of Psychosis Studies, Institute of Psychiatry, King's College London, London, UK
| | - D. Velakoulis
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, The University of Melbourne and Melbourne Health, Victoria, Australia
| | - B. Nelson
- Orygen Research Centre, University of Melbourne, Victoria, Australia
| | - J. Woolley
- Department of Psychosis Studies, Institute of Psychiatry, King's College London, London, UK
| | - C. Pantelis
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, The University of Melbourne and Melbourne Health, Victoria, Australia
| | - P. McGuire
- Department of Psychosis Studies, Institute of Psychiatry, King's College London, London, UK
| | - A. Mechelli
- Department of Psychosis Studies, Institute of Psychiatry, King's College London, London, UK
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31
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Nagao M, Asai A, Inaba W, Kawahara M, Shuto Y, Kobayashi S, Sanoyama D, Sugihara H, Yagihashi S, Oikawa S. Characterization of pancreatic islets in two selectively bred mouse lines with different susceptibilities to high-fat diet-induced glucose intolerance. PLoS One 2014; 9:e84725. [PMID: 24454742 PMCID: PMC3890274 DOI: 10.1371/journal.pone.0084725] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 11/18/2013] [Indexed: 12/26/2022] Open
Abstract
Hereditary predisposition to diet-induced type 2 diabetes has not yet been fully elucidated. We recently established 2 mouse lines with different susceptibilities (resistant and prone) to high-fat diet (HFD)-induced glucose intolerance by selective breeding (designated selectively bred diet-induced glucose intolerance-resistant [SDG-R] and -prone [SDG-P], respectively). To investigate the predisposition to HFD-induced glucose intolerance in pancreatic islets, we examined the islet morphological features and functions in these novel mouse lines. Male SDG-P and SDG-R mice were fed a HFD for 5 weeks. Before and after HFD feeding, glucose tolerance was evaluated by oral glucose tolerance test (OGTT). Morphometry and functional analyses of the pancreatic islets were also performed before and after the feeding period. Before HFD feeding, SDG-P mice showed modestly higher postchallenge blood glucose levels and lower insulin increments in OGTT than SDG-R mice. Although SDG-P mice showed greater β cell proliferation than SDG-R mice under HFD feeding, SDG-P mice developed overt glucose intolerance, whereas SDG-R mice maintained normal glucose tolerance. Regardless of whether it was before or after HFD feeding, the isolated islets from SDG-P mice showed impaired glucose- and KCl-stimulated insulin secretion relative to those from SDG-R mice; accordingly, the expression levels of the insulin secretion-related genes in SDG-P islets were significantly lower than those in SDG-R islets. These findings suggest that the innate predispositions in pancreatic islets may determine the susceptibility to diet-induced diabetes. SDG-R and SDG-P mice may therefore be useful polygenic animal models to study the gene–environment interactions in the development of type 2 diabetes.
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Affiliation(s)
- Mototsugu Nagao
- Department of Endocrinology, Diabetes and Metabolism, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Akira Asai
- Department of Endocrinology, Diabetes and Metabolism, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Wataru Inaba
- Department of Pathology and Molecular Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Momoyo Kawahara
- Department of Endocrinology, Diabetes and Metabolism, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Yuki Shuto
- Department of Endocrinology, Diabetes and Metabolism, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Shunsuke Kobayashi
- Department of Endocrinology, Diabetes and Metabolism, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Daisuke Sanoyama
- Department of Endocrinology, Diabetes and Metabolism, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Hitoshi Sugihara
- Department of Endocrinology, Diabetes and Metabolism, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Soroku Yagihashi
- Department of Pathology and Molecular Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Shinichi Oikawa
- Department of Endocrinology, Diabetes and Metabolism, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
- * E-mail:
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Xie L, Sparks MA, Li W, Qi Y, Liu C, Coffman TM, Johnson GA. Quantitative susceptibility mapping of kidney inflammation and fibrosis in type 1 angiotensin receptor-deficient mice. NMR Biomed 2013; 26:1853-63. [PMID: 24154952 PMCID: PMC3956055 DOI: 10.1002/nbm.3039] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 08/06/2013] [Accepted: 08/23/2013] [Indexed: 05/18/2023]
Abstract
Disruption of the regulatory role of the kidneys leads to diverse renal pathologies; one major hallmark is inflammation and fibrosis. Conventional magnitude MRI has been used to study renal pathologies; however, the quantification or even detection of focal lesions caused by inflammation and fibrosis is challenging. We propose that quantitative susceptibility mapping (QSM) may be particularly sensitive for the identification of inflammation and fibrosis. In this study, we applied QSM in a mouse model deficient for angiotensin receptor type 1 (AT1). This model is known for graded pathologies, including focal interstitial fibrosis, cortical inflammation, glomerulocysts and inner medullary hypoplasia. We acquired high-resolution MRI on kidneys from AT1-deficient mice that were perfusion fixed with contrast agent. Two MR sequences were used (three-dimensional spin echo and gradient echo) to produce three image contrasts: T1, T2* (magnitude) and QSM. T1 and T2* (magnitude) images were acquired to segment major renal structures and to provide landmarks for the focal lesions of inflammation and fibrosis in the three-dimensional space. The volumes of major renal structures were measured to determine the relationship of the volumes to the degree of renal abnormalities and magnetic susceptibility values. Focal lesions were segmented from QSM images and were found to be closely associated with the major vessels. Susceptibilities were relatively more paramagnetic in wild-type mice: 1.46 ± 0.36 in the cortex, 2.14 ± 0.94 in the outer medulla and 2.10 ± 2.80 in the inner medulla (10(-2) ppm). Susceptibilities were more diamagnetic in knockout mice: -7.68 ± 4.22 in the cortex, -11.46 ± 2.13 in the outer medulla and -7.57 ± 5.58 in the inner medulla (10(-2) ppm). This result was consistent with the increase in diamagnetic content, e.g. proteins and lipids, associated with inflammation and fibrosis. Focal lesions were validated with conventional histology. QSM was very sensitive in detecting pathology caused by small focal inflammation and fibrosis. QSM offers a new MR contrast mechanism to study this common disease marker in the kidney.
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Affiliation(s)
- Luke Xie
- Center for In Vivo Microscopy, Department of Radiology, Duke University Medical Center, Durham, NC, USA
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Matthew A. Sparks
- Division of Nephrology, Department of Medicine, Duke University and Durham VA Medical Centers, Durham, NC, USA
| | - Wei Li
- Brain Imaging and Analysis Center, Duke University Medical Center, Durham, NC, USA
| | - Yi Qi
- Center for In Vivo Microscopy, Department of Radiology, Duke University Medical Center, Durham, NC, USA
| | - Chunlei Liu
- Center for In Vivo Microscopy, Department of Radiology, Duke University Medical Center, Durham, NC, USA
- Brain Imaging and Analysis Center, Duke University Medical Center, Durham, NC, USA
| | - Thomas M. Coffman
- Division of Nephrology, Department of Medicine, Duke University and Durham VA Medical Centers, Durham, NC, USA
| | - G. Allan Johnson
- Center for In Vivo Microscopy, Department of Radiology, Duke University Medical Center, Durham, NC, USA
- Brain Imaging and Analysis Center, Duke University Medical Center, Durham, NC, USA
- Correspondence to: G. A. Johnson, Center for In Vivo Microscopy, Department of Radiology, Duke University Medical Center, Box 3302, Durham, NC 27710, USA.
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Naggara O, Raymond J, Domingo Ayllon M, Al-Shareef F, Touzé E, Chenoufi M, Gerber S, Mellerio C, Zuber M, Meder JF, Mas JL, Oppenheim C. T2* "susceptibility vessel sign" demonstrates clot location and length in acute ischemic stroke. PLoS One 2013; 8:e76727. [PMID: 24146915 PMCID: PMC3795632 DOI: 10.1371/journal.pone.0076727] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [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: 06/13/2013] [Accepted: 08/26/2013] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES The aim of our study was to evaluate, in acute ischemic stroke patients, the diagnostic accuracy of the MRI susceptibility vessel sign (SVS) against catheter angiography (DSA) for the detection of the clot and its value in predicting clot location and length. MATERIALS AND METHODS We identified consecutive patients (2006-2012) admitted to our center, where 1.5 T MRI is systematically implemented as first-line diagnostic work-up, with: (1) pre-treatment 6-mm-thick multislice 2D T2* sequence; (2) delay from MRI-to-DSA <3 hrs; (3) no fibrinolysis between MRI and DSA. The location and length of SVS on T2* was independently assessed by three readers, and compared per patient, per artery and per segment, to DSA findings, obtained by two different readers. Clot length measured on T2* and DSA were compared using intra-class correlation coefficient (ICC), Bland & Altman test and Passing & Bablok regression analysis. RESULTS On DSA, a clot was present in 85 patients, in 126 of 1190 (10.6%) arteries and 175 of 1870 (9.4%) segments. Sensitivity of the SVS, as sensed by the used protocol at 1.5 T, was 81.1% (69 of 85 patients) and was higher in anterior (55 of 63, 87.3%), than in posterior circulation stroke (14 of 22, 63.6%, p=0.02). Sensitivity/specificity was 69.8/99.6% (per artery) and 76.6/99.7% (per segment). Positive (PPV) and negative predictive value (NPV) and accuracy were all >94%. Inter- and intra-observer ICC was excellent for clot length as measured on T2* (ĸ ≥ 0.97) and as measured on DSA (ĸ ≥ 0.94). Correlation between T2* and DSA for clot length was excellent (ICC: 0.88, 95%CI: 0.81-0.92; Bland & Altman: mean bias of 1.6% [95%CI: -4.7 to 7.8%], Passing & Bablok: 0.91). CONCLUSIONS SVS is a specific marker of clot location in the anterior and posterior circulation. Clot length greater than 6 mm can be reliably measured on T2*.
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Affiliation(s)
- Olivier Naggara
- Department of Neuroradiology, Université Paris-Descartes, INSERM UMR 894, Centre Hospitalier Sainte-Anne, Paris, Ile de France, France
- * E-mail:
| | - Jean Raymond
- Department of Radiology, The International Consortium of Neuroendovascular Centres, Interventional Neuroradiology Research Unit, University of Montreal, Notre-Dame Hospital, Montreal, QC, Canada
| | - Montserrat Domingo Ayllon
- Department of Neuroradiology, Université Paris-Descartes, INSERM UMR 894, Centre Hospitalier Sainte-Anne, Paris, Ile de France, France
| | - Fawaz Al-Shareef
- Department of Neuroradiology, Université Paris-Descartes, INSERM UMR 894, Centre Hospitalier Sainte-Anne, Paris, Ile de France, France
| | - Emmanuel Touzé
- Department of Neurology, Université Paris-Descartes, INSERM UMR 894, Centre Hospitalier Sainte-Anne, Paris, Ile de France, France
| | - Meriem Chenoufi
- Department of Neuroradiology, Université Paris-Descartes, INSERM UMR 894, Centre Hospitalier Sainte-Anne, Paris, Ile de France, France
| | - Sophie Gerber
- Department of Radiology, Saint Joseph Hospital, Paris, France
| | - Charles Mellerio
- Department of Neuroradiology, Université Paris-Descartes, INSERM UMR 894, Centre Hospitalier Sainte-Anne, Paris, Ile de France, France
| | - Matthieu Zuber
- Department of Neurology, Saint Joseph Hospital, Paris, Ile de France, France
| | - Jean Francois Meder
- Department of Neuroradiology, Université Paris-Descartes, INSERM UMR 894, Centre Hospitalier Sainte-Anne, Paris, Ile de France, France
| | - Jean-Louis Mas
- Department of Neurology, Université Paris-Descartes, INSERM UMR 894, Centre Hospitalier Sainte-Anne, Paris, Ile de France, France
| | - Catherine Oppenheim
- Department of Neuroradiology, Université Paris-Descartes, INSERM UMR 894, Centre Hospitalier Sainte-Anne, Paris, Ile de France, France
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Marioni G, Castegnaro E, Staffieri C, Rinaldi R, Giacomelli L, Boninsegna M, Bertolin A, Staffieri A. Deep neck infection in elderly patients. A single institution experience (2000–2004). Aging Clin Exp Res 2013; 18:127-32. [PMID: 16702781 DOI: 10.1007/bf03327427] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [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: 10/26/2022]
Abstract
BACKGROUND AND AIMS Immunosenescence, the age-related decline in immunologic function in healthy individuals, seems to contribute to increased susceptibility to bacterial infections in the elderly population. The present study describes elderly patients' susceptibility to deep neck infection and prognosis. METHODS Between January 2000 and March 2004, 103 patients were admitted to the Department of Otolaryngology, University of Padova for deep neck infection. Twenty-four patients (23%) were over 65 (elderly patients). The remaining 79 patients (77%) aged < or =65 years (adult non-elderly patients) were also studied. Presentation modalities, origin of infection, site of deep neck infection, radiological investigations, bacteriology, treatment and outcome were all studied. RESULTS Hypertension and diabetes mellitus were the most commonly associated systemic diseases in both elderly and non-elderly patients. The number of patients with associated systemic diseases was significantly higher in the elderly group. The most common cause of deep neck infection was dental infection in both age groups. In the elderly group, salivary gland origin had the same incidence as dental origin. Twenty-two patients (6 elderly patients) were treated only with intravenous antibiotic therapy and intravenous steroids. Overall, in 81 cases (78.6%) (18 elderly patients) medical plus surgical procedures were indicated. None of the treated patients died of deep neck infection or its complications. CONCLUSIONS Although the incidence of associated systemic diseases and complications of deep neck infections were higher in the elderly group, our medical or medical plus surgical approaches to deep neck infections, based on clinical and radiological evidence, were successful in all patients treated.
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Affiliation(s)
- Gino Marioni
- Department of Medical and Surgical Specialties, Section of Otolaryngology, University of Padova, 35128 Padova, Italy.
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Westphal C, Spallek B, Konkel A, Marko L, Qadri F, DeGraff LM, Schubert C, Bradbury JA, Regitz-Zagrosek V, Falck JR, Zeldin DC, Müller DN, Schunck WH, Fischer R. CYP2J2 overexpression protects against arrhythmia susceptibility in cardiac hypertrophy. PLoS One 2013; 8:e73490. [PMID: 24023684 PMCID: PMC3758319 DOI: 10.1371/journal.pone.0073490] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 07/29/2013] [Indexed: 01/04/2023] Open
Abstract
Maladaptive cardiac hypertrophy predisposes one to arrhythmia and sudden death. Cytochrome P450 (CYP)-derived epoxyeicosatrienoic acids (EETs) promote anti-inflammatory and antiapoptotic mechanisms, and are involved in the regulation of cardiac Ca(2+)-, K(+)- and Na(+)-channels. To test the hypothesis that enhanced cardiac EET biosynthesis counteracts hypertrophy-induced electrical remodeling, male transgenic mice with cardiomyocyte-specific overexpression of the human epoxygenase CYP2J2 (CYP2J2-TG) and wildtype littermates (WT) were subjected to chronic pressure overload (transverse aortic constriction, TAC) or β-adrenergic stimulation (isoproterenol infusion, ISO). TAC caused progressive mortality that was higher in WT (42% over 8 weeks after TAC), compared to CYP2J2-TG mice (6%). In vivo electrophysiological studies, 4 weeks after TAC, revealed high ventricular tachyarrhythmia inducibility in WT (47% of the stimulation protocols), but not in CYP2J2-TG mice (0%). CYP2J2 overexpression also enhanced ventricular refractoriness and protected against TAC-induced QRS prolongation and delocalization of left ventricular connexin-43. ISO for 14 days induced high vulnerability for atrial fibrillation in WT mice (54%) that was reduced in CYP-TG mice (17%). CYP2J2 overexpression also protected against ISO-induced reduction of atrial refractoriness and development of atrial fibrosis. In contrast to these profound effects on electrical remodeling, CYP2J2 overexpression only moderately reduced TAC-induced cardiac hypertrophy and did not affect the hypertrophic response to β-adrenergic stimulation. These results demonstrate that enhanced cardiac EET biosynthesis protects against electrical remodeling, ventricular tachyarrhythmia, and atrial fibrillation susceptibility during maladaptive cardiac hypertrophy.
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Affiliation(s)
| | - Bastian Spallek
- Experimental and Clinical Research Center, a joint cooperation between the Charité Universitätsmedizin and the MDC, Berlin, Germany
| | - Anne Konkel
- Max-Delbrueck Center for Molecular Medicine, Berlin, Germany
| | - Lajos Marko
- Experimental and Clinical Research Center, a joint cooperation between the Charité Universitätsmedizin and the MDC, Berlin, Germany
| | - Fatimunnisa Qadri
- Experimental and Clinical Research Center, a joint cooperation between the Charité Universitätsmedizin and the MDC, Berlin, Germany
| | - Laura M. DeGraff
- National Institute of Environmental Health Sciences, NIH, Research Triangle Park, North Carolina, United States of America
| | - Carola Schubert
- Institute of Gender in Medicine, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - J. Alyce Bradbury
- National Institute of Environmental Health Sciences, NIH, Research Triangle Park, North Carolina, United States of America
| | - Vera Regitz-Zagrosek
- Institute of Gender in Medicine, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - John R. Falck
- University of Texas Southwestern Medical Center, Dallas, United States of America
| | - Darryl C. Zeldin
- National Institute of Environmental Health Sciences, NIH, Research Triangle Park, North Carolina, United States of America
| | - Dominik N. Müller
- Max-Delbrueck Center for Molecular Medicine, Berlin, Germany
- Experimental and Clinical Research Center, a joint cooperation between the Charité Universitätsmedizin and the MDC, Berlin, Germany
- Department of Experimental Medicine I, Nikolaus-Fiebiger-Center for Molecular Medicine, Friedrich-Alexander-University Erlangen-Nürnberg, Germany
| | | | - Robert Fischer
- Clinic for Cardiology and Pulmonology, Charité Universitätsmedizin Berlin, Berlin, Germany
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Kumar M, Roe K, Nerurkar PV, Namekar M, Orillo B, Verma S, Nerurkar VR. Impaired virus clearance, compromised immune response and increased mortality in type 2 diabetic mice infected with West Nile virus. PLoS One 2012; 7:e44682. [PMID: 22953001 PMCID: PMC3432127 DOI: 10.1371/journal.pone.0044682] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Accepted: 08/06/2012] [Indexed: 12/13/2022] Open
Abstract
Clinicoepidemiological data suggest that type 2 diabetes is associated with increased risk of West Nile virus encephalitis (WNVE). However, no experimental studies have elucidated the role of diabetes in WNV neuropathogenesis. Herein, we employed the db/db mouse model to understand WNV immunopathogenesis in diabetics. Nine-week old C57BL/6 WT and db/db mice were inoculated with WNV and mortality, virus burden in the periphery and brain, and antiviral defense responses were analyzed. db/db mice were highly susceptible to WNV disease, exhibited increased tissue tropism and mortality than the wild-type mice, and were unable to clear the infection. Increased and sustained WNV replication was observed in the serum, peripheral tissues and brain of db/db mice, and heightened virus replication in the periphery was correlated with enhanced neuroinvasion and replication of WNV in the brain. WNV infection in db/db mice was associated with enhanced inflammatory response and compromised antiviral immune response characterized by delayed induction of IFN-α, and significantly reduced concentrations of WNV-specific IgM and IgG antibodies. The compromised immune response in db/db mice correlated with increased viremia. These data suggest that delayed immune response coupled with failure to clear the virus leads to increased mortality in db/db mice. In conclusion, this study provides unique mechanistic insight into the immunopathogenesis of WNVE observed in diabetics and can be used to develop therapeutics for the management of WNVE among diabetic patients.
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Affiliation(s)
- Mukesh Kumar
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America
- Pacific Center for Emerging Infectious Diseases Research, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America
| | - Kelsey Roe
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America
- Pacific Center for Emerging Infectious Diseases Research, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America
| | - Pratibha V. Nerurkar
- Laboratory of Metabolic Disorders and Alternative Medicine, Department of Molecular Biosciences and Bioengineering, College of Tropical Agriculture and Human Resources, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America
| | - Madhuri Namekar
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America
- Pacific Center for Emerging Infectious Diseases Research, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America
| | - Beverly Orillo
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America
- Pacific Center for Emerging Infectious Diseases Research, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America
| | - Saguna Verma
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America
- Pacific Center for Emerging Infectious Diseases Research, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America
| | - Vivek R. Nerurkar
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America
- Pacific Center for Emerging Infectious Diseases Research, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America
- * E-mail:
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Desgent S, Duss S, Sanon NT, Lema P, Lévesque M, Hébert D, Rébillard RM, Bibeau K, Brochu M, Carmant L. Early-life stress is associated with gender-based vulnerability to epileptogenesis in rat pups. PLoS One 2012; 7:e42622. [PMID: 22880055 PMCID: PMC3411822 DOI: 10.1371/journal.pone.0042622] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [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: 01/30/2012] [Accepted: 07/10/2012] [Indexed: 11/19/2022] Open
Abstract
During development, the risk of developing mesial temporal lobe epilepsy (MTLE) increases when the developing brain is exposed to more than one insult in early life. Early life insults include abnormalities of cortical development, hypoxic-ischemic injury and prolonged febrile seizures. To study epileptogenesis, we have developed a two-hit model of MTLE characterized by two early-life insults: a freeze lesion-induced cortical malformation at post-natal day 1 (P1), and a prolonged hyperthermic seizure (HS) at P10. As early life stressors lead to sexual dimorphism in both acute response and long-term outcome, we hypothesized that our model could lead to gender-based differences in acute stress response and long-term risk of developing MTLE. Male and female pups underwent a freeze-lesion induced cortical microgyrus at P1 and were exposed to HS at P10. Animals were monitored by video-EEG from P90 to P120. Pre and post-procedure plasma corticosterone levels were used to measure stress response at P1 and P10. To confirm the role of sex steroids, androgenized female pups received daily testosterone injections to the mother pre-natally and post-natally for nine days while undergoing both insults. We demonstrated that after both insults females did not develop MTLE while all males did. This correlated with a rise in corticosterone levels at P1 following the lesion in males only. Interestingly, all androgenized females showed a similar rise in corticosterone at P1, and also developed MTLE. Moreover, we found that the cortical lesion significantly decreased the latency to generalized convulsion during hyperthermia at P10 in both genders. The cortical dysplasia volumes at adulthood were also similar between male and female individuals. Our data demonstrate sexual dimorphism in long-term vulnerability to develop epilepsy in the lesion + hyperthermia animal model of MTLE and suggest that the response to early-life stress at P1 contributes significantly to epileptogenesis in a gender-specific manner.
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Affiliation(s)
- Sébastien Desgent
- Centre de Recherche du Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, Montréal, Québec, Canada
- Département de Physiologie, Faculté de Médecine, Université de Montréal, Montréal, Québec, Canada
- * E-mail: (S. Desgent); (LC)
| | - Sandra Duss
- Centre de Recherche du Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, Montréal, Québec, Canada
| | - Nathalie T. Sanon
- Centre de Recherche du Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, Montréal, Québec, Canada
| | - Pablo Lema
- Centre de Recherche du Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, Montréal, Québec, Canada
| | - Maxime Lévesque
- Centre de Recherche du Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, Montréal, Québec, Canada
| | - David Hébert
- Centre de Recherche du Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, Montréal, Québec, Canada
| | - Rose-Marie Rébillard
- Centre de Recherche du Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, Montréal, Québec, Canada
| | - Karine Bibeau
- Centre de Recherche du Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, Montréal, Québec, Canada
| | - Michèle Brochu
- Centre de Recherche du Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, Montréal, Québec, Canada
- Département de Physiologie, Faculté de Médecine, Université de Montréal, Montréal, Québec, Canada
| | - Lionel Carmant
- Centre de Recherche du Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, Montréal, Québec, Canada
- Département de Physiologie, Faculté de Médecine, Université de Montréal, Montréal, Québec, Canada
- * E-mail: (S. Desgent); (LC)
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Abstract
DYT1 is caused by a partly penetrant dominant mutation in TOR1A that leads to a glutamic acid deletion (ΔE) in torsinA. Identifying environmental factors that modulate disease pathogenesis and penetrance could help design therapeutic strategies for dystonia. Several cell-based studies suggest that expression of torsinA(ΔE) increases the susceptibility of neuronal cells to challenges to their oxidative/energy metabolism. Based on those reports, we hypothesized that mice expressing torsinA(ΔE) would be more susceptible than control littermates to the effects of oxidative stress and ATP deficits caused by disruption of the mitochondrial respiratory chain in neurons. To test this hypothesis, we administered 20 or 50 mg/kg/day of the irreversible complex-II inhibitor 3-nitropropionic acid (3-NP) intraperitoneally for 15 consecutive days to young heterozygote DYT1 knock-in (KI) mice and wild type littermates. Repeated phenotypic assessments were performed at baseline, during and after the injections. Animals were then sacrificed and their brains processed for protein analysis. The administration of 20 mg/kg 3-NP led to increased levels of torsinA in the striatum, the main target of 3-NP, but did not cause motor dysfunction in DYT1 KI or control mice. The administration of 50 mg/kg/day of 3-NP caused the death of ∼40% of wild type animals. Interestingly, DYT1 KI animals showed significantly reduced mortality. Surviving animals exhibited abnormal motor behavior during and right after the injection period, but recovered by 4 weeks postinjection independent of genotype. In contrast to the findings reported in cultured cells, these studies suggest the DYT1 mutation does not sensitize central neurons against the toxic effects of oxidative stress and energy deficits.
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Affiliation(s)
- Nicole Bode
- Department of Neurology, Roy J and Lucille Carver College of Medicine at the University of Iowa, Iowa City, Iowa, United States of America
| | - Cory Massey
- Graduate Program in Neuroscience, the University of Iowa, Iowa City, Iowa, United States of America
| | - Pedro Gonzalez-Alegre
- Department of Neurology, Roy J and Lucille Carver College of Medicine at the University of Iowa, Iowa City, Iowa, United States of America
- Graduate Program in Neuroscience, the University of Iowa, Iowa City, Iowa, United States of America
- * E-mail:
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MacPherson JI, Sidders B, Wieland S, Zhong J, Targett-Adams P, Lohmann V, Backes P, Delpuech-Adams O, Chisari F, Lewis M, Parkinson T, Robertson DL. An integrated transcriptomic and meta-analysis of hepatoma cells reveals factors that influence susceptibility to HCV infection. PLoS One 2011; 6:e25584. [PMID: 22046242 PMCID: PMC3201949 DOI: 10.1371/journal.pone.0025584] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Accepted: 09/06/2011] [Indexed: 02/06/2023] Open
Abstract
Hepatitis C virus (HCV) is a global problem. To better understand HCV infection researchers employ in vitro HCV cell-culture (HCVcc) systems that use Huh-7 derived hepatoma cells that are particularly permissive to HCV infection. A variety of hyper-permissive cells have been subcloned for this purpose. In addition, subclones of Huh-7 which have evolved resistance to HCV are available. However, the mechanisms of susceptibility or resistance to infection among these cells have not been fully determined. In order to elucidate mechanisms by which hepatoma cells are susceptible or resistant to HCV infection we performed genome-wide expression analyses of six Huh-7 derived cell cultures that have different levels of permissiveness to infection. A great number of genes, representing a wide spectrum of functions are differentially expressed between cells. To focus our investigation, we identify host proteins from HCV replicase complexes, perform gene expression analysis of three HCV infected cells and conduct a detailed analysis of differentially expressed host factors by integrating a variety of data sources. Our results demonstrate that changes relating to susceptibility to HCV infection in hepatoma cells are linked to the innate immune response, secreted signal peptides and host factors that have a role in virus entry and replication. This work identifies both known and novel host factors that may influence HCV infection. Our findings build upon current knowledge of the complex interplay between HCV and the host cell, which could aid development of new antiviral strategies.
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Affiliation(s)
- Jamie I. MacPherson
- Computational and Evolutionary Biology, Faculty of Life Sciences, University of Manchester, Manchester, United Kingdom
| | - Ben Sidders
- Pfizer Global Research and Development, Sandwich, United Kingdom
| | - Stefan Wieland
- The Scripps Research Institute, La Jolla, California, United States ofAmerica
| | - Jin Zhong
- The Scripps Research Institute, La Jolla, California, United States ofAmerica
| | | | - Volker Lohmann
- Department of Infectious Diseases, Molecular Virology, University of Heidelberg, Heidelberg, Germany
| | - Perdita Backes
- Department of Infectious Diseases, Molecular Virology, University of Heidelberg, Heidelberg, Germany
| | | | - Francis Chisari
- The Scripps Research Institute, La Jolla, California, United States ofAmerica
| | - Marilyn Lewis
- Pfizer Global Research and Development, Sandwich, United Kingdom
| | - Tanya Parkinson
- Pfizer Global Research and Development, Sandwich, United Kingdom
| | - David L. Robertson
- Computational and Evolutionary Biology, Faculty of Life Sciences, University of Manchester, Manchester, United Kingdom
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Lee JH, Yang TI, Cho M, Yoon KT, Baik SK, Han YH. Widespread cerebral cortical mineralization in Wilson's disease detected by susceptibility-weighted imaging. J Neurol Sci 2011; 313:54-6. [PMID: 22014607 DOI: 10.1016/j.jns.2011.09.031] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Revised: 09/22/2011] [Accepted: 09/27/2011] [Indexed: 11/19/2022]
Abstract
Signal abnormalities of cortical gray matter, compared with the deep nuclear structures, have received less attention in Wilson's disease (WD). They nearly always accompanied white matter signal change, and commonly are associated with epilepsy and psychiatric features. We report herein two cases diagnosed as WD who, in addition to characteristic deep nuclear lesions on MR imaging, had widespread cerebral cortical paramagnetic signals dramatically detected by susceptibility-weighted imaging. T2-weighted MR images did not show any cortico-subcortical hyperintense lesions. To our knowledge, these findings have not been described before and may help to further characterize the disease.
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Affiliation(s)
- Jae-Hyeok Lee
- Department of Neurology, Pusan National University, Yangsan Hospital, Research Institute for Convergence of Biomedical Science and Technology, Yangsan, Republic of Korea.
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Ivanenko SA, Bozhchenko AP, Tolmachev IA. [Dermatoglyphic features in suicidents: characteristic and implications for the solution of forensic medical problems]. Sud Med Ekspert 2011; 54:26-29. [PMID: 22117475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The objective of the present work was to study dermatoglyphic signs in suicidents (n=50) and in the subjects who were either killed or died as a result of an accident. It was shown that the correlation between selected dermatoglyphic signs and predisposition to suicide is either insignificant or moderately significant. The specific features of suicidal predisposition can be traced down to dermatoglyphics of all the friction ridged skin areas (fingers, palms, toes, and soles of the feet). Suicidal residents of the northwestern regions of Russia have been found to possess specific dermatoglyphic features. The effectiveness of the mathematical models of suicidal predisposition developed based on the 20 most informative dermatoglyphic characteristics amounts to 88%.
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Davies PF, Civelek M. Endoplasmic reticulum stress, redox, and a proinflammatory environment in athero-susceptible endothelium in vivo at sites of complex hemodynamic shear stress. Antioxid Redox Signal 2011; 15:1427-32. [PMID: 21126204 PMCID: PMC3144426 DOI: 10.1089/ars.2010.3741] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2010] [Accepted: 12/02/2010] [Indexed: 12/11/2022]
Abstract
Endothelial phenotype heterogeneity plays an important role in the susceptibility of arteries to atherosclerosis. Regions of blood flow disturbance correlate with the development of disease. Here, we briefly outline the association of endoplasmic reticulum stress with endothelium in regions of athero-susceptibility in vivo. It is an important example of susceptible cell phenotype that is likely linked to proinflammatory and oxidative stress pathways. The endothelium in such regions is chronically exposed to complex hemodynamic shear stresses that may be considered as a risk factor for atherosclerosis via these mechanisms.
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Affiliation(s)
- Peter F Davies
- Institute for Medicine & Engineering, University of Pennsylvania, Philadelphia, PA 19041, USA.
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Owen KA, Abshire MY, Tilghman RW, Casanova JE, Bouton AH. FAK regulates intestinal epithelial cell survival and proliferation during mucosal wound healing. PLoS One 2011; 6:e23123. [PMID: 21887232 PMCID: PMC3160839 DOI: 10.1371/journal.pone.0023123] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Accepted: 07/11/2011] [Indexed: 12/29/2022] Open
Abstract
Background Following damage to the intestinal epithelium, restoration of epithelial barrier integrity is triggered by a robust proliferative response. In other tissues, focal adhesion kinase (FAK) regulates many of the cellular processes that are critical for epithelial homeostasis and restitution, including cell migration, proliferation and survival. However, few studies to date have determined how FAK contributes to mucosal wound healing in vivo. Methodology and Principal Findings To examine the role of FAK in intestinal epithelial homeostasis and during injury, we generated intestinal epithelium (IE)-specific conditional FAK knockout mice. Colitis was induced with dextran-sulfate-sodium (DSS) and intestinal tissues were analyzed by immunohistochemistry and immunoblotting. While intestinal development occurred normally in mice lacking FAK, FAK-deficient animals were profoundly susceptible to colitis. The loss of epithelial FAK resulted in elevated p53 expression and an increased sensitivity to apoptosis, coincident with a failure to upregulate epithelial cell proliferation. FAK has been reported to function as a mechanosensor, inducing cyclin D1 expression and promoting cell cycle progression under conditions in which tissue/matrix stiffness is increased. Collagen deposition, a hallmark of inflammatory injury resulting in increased tissue rigidity, was observed in control and FAK knockout mice during colitis. Despite this fibrotic response, the colonic epithelium in FAK-deficient mice exhibited significantly reduced cyclin D1 expression, suggesting that proliferation is uncoupled from fibrosis in the absence of FAK. In support of this hypothesis, proliferation of Caco-2 cells increased proportionally with matrix stiffness in vitro only under conditions of normal FAK expression; FAK depleted cells exhibited reduced proliferation concomitant with attenuated cyclin D1 expression. Conclusions In the colon, FAK functions as a regulator of epithelial cell survival and proliferation under conditions of mucosal injury and a mechanosensor of tissue compliance, inducing repair-driven proliferation in the colonic epithelium through upregulation of cyclin D1.
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Affiliation(s)
- Katherine A. Owen
- Department of Cell Biology, University of Virginia Health System, Charlottesville, Virginia, United States of America
| | - Michelle Y. Abshire
- Department of Microbiology, University of Virginia Health System, Charlottesville, Virginia, United States of America
| | - Robert W. Tilghman
- Department of Microbiology, University of Virginia Health System, Charlottesville, Virginia, United States of America
| | - James E. Casanova
- Department of Cell Biology, University of Virginia Health System, Charlottesville, Virginia, United States of America
- Department of Microbiology, University of Virginia Health System, Charlottesville, Virginia, United States of America
- * E-mail: (AHB); (JEC)
| | - Amy H. Bouton
- Department of Microbiology, University of Virginia Health System, Charlottesville, Virginia, United States of America
- * E-mail: (AHB); (JEC)
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Martinelli E, Tharinger H, Frank I, Arthos J, Piatak M, Lifson JD, Blanchard J, Gettie A, Robbiani M. HSV-2 infection of dendritic cells amplifies a highly susceptible HIV-1 cell target. PLoS Pathog 2011; 7:e1002109. [PMID: 21738472 PMCID: PMC3128120 DOI: 10.1371/journal.ppat.1002109] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Accepted: 04/23/2011] [Indexed: 11/18/2022] Open
Abstract
Herpes simplex virus type 2 (HSV-2) increases the risk of HIV-1 infection and, although several reports describe the interaction between these two viruses, the exact mechanism for this increased susceptibility remains unclear. Dendritic cells (DCs) at the site of entry of HSV-2 and HIV-1 contribute to viral spread in the mucosa. Specialized DCs present in the gut-associated lymphoid tissues produce retinoic acid (RA), an important immunomodulator, able to influence HIV-1 replication and a key mediator of integrin α4β7 on lymphocytes. α4β7 can be engaged by HIV-1 on the cell-surface and CD4+ T cells expressing high levels of this integrin (α4β7high) are particularly susceptible to HIV-1 infection. Herein we provide in-vivo data in macaques showing an increased percentage of α4β7high CD4+ T cells in rectal mucosa, iliac lymph nodes and blood within 6 days of rectal exposure to live (n = 11), but not UV-treated (n = 8), HSV-2. We found that CD11c+ DCs are a major target of HSV-2 infection in in-vitro exposed PBMCs. We determined that immature monocyte-derived DCs (moDCs) express aldehyde dehydrogenase ALDH1A1, an enzyme essential for RA production, which increases upon HSV-2 infection. Moreover, HSV-2-infected moDCs significantly increase α4β7 expression on CD4+ T lymphocytes and HIV-1 infection in DC-T cell mixtures in a RA-dependent manner. Thus, we propose that HSV-2 modulates its microenviroment, influencing DC function, increasing RA production capability and amplifying a α4β7highCD4+ T cells. These factors may play a role in increasing the susceptibility to HIV-1. The vast majority of HIV-1 infections occur through genital and rectal mucosa. A better understanding of the characteristics of the mucosal microenvironment that help HIV-1 replication is critical to developing strategies for prevention of HIV-1 transmission. HSV-2 infects genital and rectal mucosa and infected individuals carry an increased risk for HIV-1 infection. Clarifying the mechanisms involved in the increased susceptibility of HSV-2 positive individuals to HIV-1 infection may help understating the characteristics of mucosal microenvironment that facilitate HIV-1 transmission. We previously described a specific interaction between HIV-1 and integrin α4β7, a signature molecule that allows lymphocytes to gain access to the gut tissue, a major site of HIV-1 replication. Vitamin A and its metabolite, retinoic acid, have an important role in balancing the immune response in the gut and in the expression of integrin α4β7. Here we describe that HSV-2 rectal infection in monkeys increases the frequency of α4β7+ CD4+ T cells in blood and rectal tissue and that this could be at least partially explained by the ability of HSV-2 infected DCs to secrete retinoic acid and up-regulate α4β7 on CD4+ T cells. These phenomena could be responsible for increasing HIV-1 replication in DC-T cell co-cultures.
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Affiliation(s)
- Elena Martinelli
- Center for Biomedical Research, Population Council, New York, New York, United States of America
- * E-mail: (EM); (MR)
| | - Hugo Tharinger
- Center for Biomedical Research, Population Council, New York, New York, United States of America
| | - Ines Frank
- Center for Biomedical Research, Population Council, New York, New York, United States of America
| | - James Arthos
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Michael Piatak
- AIDS and Cancer Virus Program, SAIC-Frederick, Inc., National Cancer Institute, Frederick, Maryland, Unites States of America
| | - Jeffrey D. Lifson
- AIDS and Cancer Virus Program, SAIC-Frederick, Inc., National Cancer Institute, Frederick, Maryland, Unites States of America
| | - James Blanchard
- Tulane National Primate Research Center, Tulane University Health Sciences Center, Covington, Louisiana, United States of America
| | - Agegnehu Gettie
- Aaron Diamond AIDS Research Center, Rockefeller University, New York, New York, Unites States of America
| | - Melissa Robbiani
- Center for Biomedical Research, Population Council, New York, New York, United States of America
- * E-mail: (EM); (MR)
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Western PS, Ralli RA, Wakeling SI, Lo C, van den Bergen JA, Miles DC, Sinclair AH. Mitotic arrest in teratoma susceptible fetal male germ cells. PLoS One 2011; 6:e20736. [PMID: 21674058 PMCID: PMC3107236 DOI: 10.1371/journal.pone.0020736] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [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: 01/16/2011] [Accepted: 05/08/2011] [Indexed: 12/11/2022] Open
Abstract
Formation of germ cell derived teratomas occurs in mice of the 129/SvJ strain, but not in C57Bl/6 inbred or CD1 outbred mice. Despite this, there have been few comparative studies aimed at determining the similarities and differences between teratoma susceptible and non-susceptible mouse strains. This study examines the entry of fetal germ cells into the male pathway and mitotic arrest in 129T2/SvJ mice. We find that although the entry of fetal germ cells into mitotic arrest is similar between 129T2/SvJ, C57Bl/6 and CD1 mice, there were significant differences in the size and germ cell content of the testis cords in these strains. In 129T2/SvJ mice germ cell mitotic arrest involves upregulation of p27KIP1, p15INK4B, activation of RB, the expression of male germ cell differentiation markers NANOS2, DNMT3L and MILI and repression of the pluripotency network. The germ-line markers DPPA2 and DPPA4 show reciprocal repression and upregulation, respectively, while FGFR3 is substantially enriched in the nucleus of differentiating male germ cells. Further understanding of fetal male germ cell differentiation promises to provide insight into disorders of the testis and germ cell lineage, such as testis tumour formation and infertility.
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Affiliation(s)
- Patrick S Western
- Centre for Reproduction and Development, Monash Institute of Medical Research, Monash University, Clayton, Victoria, Australia.
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Kim WK, Park JS, Sul OJ, Seo JH, Choi BK, Park HY, Latour AM, Koller BH, Kwon BS, Jeong CS. Role of TNFR-related 2 mediated immune responses in dextran sulfate sodium-induced inflammatory bowel disease. Mol Cells 2011; 31:99-104. [PMID: 21347711 PMCID: PMC3932679 DOI: 10.1007/s10059-011-0013-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [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: 06/04/2010] [Revised: 10/18/2010] [Accepted: 11/08/2010] [Indexed: 12/01/2022] Open
Abstract
Previous work has suggested that the LIGHT-TR2 costimulatory pathway plays a role in the acute and chronic stages of dextran sulfate sodium (DSS)-induced colitis [Steinberg et al. (2008); Wang et al. (2005)]. To clarify the role of TNFR-related 2 (TR2) signaling in the maintenance of intestinal homeostasis, we generated a TR2 knock-out (KO) mouse. Using DSS to induce colitis, we compared the colitic symptoms and pathological changes in wild type (WT) and TR2 KO mice, and the production of cytokines by the diseased colons. We also studied the role of TR2 in suppressing innate and adaptive immunity in the DSS model. TR2 deficient mice were characterized by reduced symptoms of intestinal inflammation compared with wild-type mice, and reduced production of cytokines. We therefore generated a monoclonal antibody against mouse TR2 which was specific to TR2 and capable of blocking TR2 signals. With this antibody, we demonstrated that antagonizing TR2 during the development of DSS-induced colitis reduced the symptoms of inflammation. Our findings suggest that TR2 is an important mediator in colitis, and may serve as a therapeutic target in inflammatory bowel disease.
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MESH Headings
- Animals
- Antibodies, Monoclonal/pharmacology
- Antibodies, Monoclonal/therapeutic use
- Cell Movement/drug effects
- Colitis/chemically induced
- Colitis/drug therapy
- Colitis/immunology
- Colitis/pathology
- Cytokines/metabolism
- Dextran Sulfate
- Disease Models, Animal
- Disease Susceptibility/complications
- Disease Susceptibility/immunology
- Disease Susceptibility/pathology
- Immunity/drug effects
- Immunity/immunology
- Inflammation Mediators/metabolism
- Inflammatory Bowel Diseases/chemically induced
- Inflammatory Bowel Diseases/drug therapy
- Inflammatory Bowel Diseases/immunology
- Inflammatory Bowel Diseases/pathology
- Leukocytes/drug effects
- Leukocytes/immunology
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mucous Membrane/drug effects
- Mucous Membrane/immunology
- Mucous Membrane/pathology
- Receptors, Tumor Necrosis Factor, Type II/antagonists & inhibitors
- Receptors, Tumor Necrosis Factor, Type II/deficiency
- Receptors, Tumor Necrosis Factor, Type II/immunology
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Affiliation(s)
| | | | | | - Jae-Hee Seo
- Medical School, University of Ulsan, Ulsan 680-749, Korea
| | - Byum-Kyu Choi
- Division of Cell and Immunobiology and R&D Center for Cancer Therapeutics, National Cancer Center, Ilsan 410-769, Korea
| | | | - Anne M. Latour
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7248, USA
| | - Beverly H. Koller
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7248, USA
| | - Byoung S. Kwon
- Division of Cell and Immunobiology and R&D Center for Cancer Therapeutics, National Cancer Center, Ilsan 410-769, Korea
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47
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Goliuchenko OA, Osochuk SS. [Higher cortisol levels in frequently ill children as a factor increasing susceptibility to acute respiratory infections]. Klin Lab Diagn 2010:14-16. [PMID: 21395048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The authors have defined some specific features of performance of the immune and lipid-transporting systems in their association with serum cortisol levels in frequently ill children when the signs of an infectious process are absent. The possible links of a pathological process, which give rise to enhanced susceptibility to acute respiratory infections in this patient group, are described.
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48
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[Mononuclear phagocytes in rheumatoid arthritis: discordance of ingestion]. Patol Fiziol Eksp Ter 2010;:23-6. [PMID: 21395112] [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: 05/30/2023]
Abstract
The following functions of mononuclear phagocytes of 24 patients with rheumatoid arthritis, 24 their relatives, and 24 women, not hereditary tainted with autoimmune diseases (control) were compared: (1) engulfment and digestion (radioisotope method); (2) release of lysosomal glucuronidase during the interaction of cells with opsonized zymosan (fluorescent method). In rheumatoid arthritis the slowed down process of engulfment and preliminary extracellular digestion was combined with accelerated digestive potential. In relatives, the delayed and suppressed engulfment was associated with the decelerated digestive mononuclear phagocyte potential. The congenital peculiarity of the cell functioning was suggested, being due to the imperfect anti infectious defense in predisposed to the disease individuals, on one hand, and to the excessive damage of the surrounding tissues and to the provocation of autoimmune processes.
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49
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Apland JP, Figueiredo TH, Qashu F, Aroniadou-Anderjaska V, Souza AP, Braga MFM. Higher susceptibility of the ventral versus the dorsal hippocampus and the posteroventral versus anterodorsal amygdala to soman-induced neuropathology. Neurotoxicology 2010; 31:485-92. [PMID: 20570628 PMCID: PMC2933957 DOI: 10.1016/j.neuro.2010.05.014] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [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: 01/07/2010] [Revised: 04/09/2010] [Accepted: 05/31/2010] [Indexed: 10/19/2022]
Abstract
Nerve agents are acetylcholinesterase inhibitors, exposure to which causes brain damage, primarily by inducing intense seizure activity. Knowledge of the brain regions that are most vulnerable to nerve agent-induced brain damage can facilitate the development of drugs targeting the protection of these regions. Both the amygdala and the hippocampus have been shown to suffer significant damage after nerve agent exposure, but the amygdala appears to be the more severely affected structure. However, damage in the amygdala has generally been compared with damage in the dorsal hippocampus, whereas there is evidence that the ventral hippocampus is significantly more susceptible to seizures than the dorsal region and, therefore, it may also be more susceptible to nerve agent-induced neuropathology. Here, we report that after status epilepticus induced by soman administration to rats, neuronal degeneration as assessed by Fluoro-Jade C staining was more extensive in the ventral than the dorsal hippocampal subfields, 1 day after soman exposure. Seven days later, the difference between dorsal and ventral regions was not statistically significant. In the amygdala, soman-induced neurodegeneration was more severe in the posteroventral regions of the lateral, basolateral, and medial nuclei compared to the anterodorsal regions of these nuclei. In contrast, the basomedial nucleus was more severely affected in the anterodorsal region. The extent of neurodegeneration in the amygdala was not significantly different from that in the ventral hippocampus. However, when compared with the whole hippocampus, the amygdala displayed more severe neurodegeneration, on both day 1 and day 7 after soman exposure. Testing the protective efficacy of drugs against nerve agent-induced brain damage should include examination of the ventral hippocampus and the posteroventral regions of the amygdala, as these areas are most vulnerable to nerve agent-induced neurodegeneration.
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Affiliation(s)
- James P. Apland
- U.S. Army Medical Research Institute of Chemical Defense, Neurobehavioral Toxicology Branch, Aberdeen Proving Ground, MD, 21010
| | - Taiza H. Figueiredo
- Department of Anatomy, Physiology and Genetics, Uniformed Services University of the Health Sciences, Bethesda, MD, 20814, USA
| | - Felicia Qashu
- Department of Anatomy, Physiology and Genetics, Uniformed Services University of the Health Sciences, Bethesda, MD, 20814, USA
| | - Vassiliki Aroniadou-Anderjaska
- Department of Anatomy, Physiology and Genetics, Uniformed Services University of the Health Sciences, Bethesda, MD, 20814, USA
- Department of Psychiatry, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, 20814, USA
| | - Adriana P. Souza
- Department of Anatomy, Physiology and Genetics, Uniformed Services University of the Health Sciences, Bethesda, MD, 20814, USA
| | - Maria F. M. Braga
- Department of Anatomy, Physiology and Genetics, Uniformed Services University of the Health Sciences, Bethesda, MD, 20814, USA
- Department of Psychiatry, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, 20814, USA
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50
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Odefrey F, Stone J, Gurrin LC, Byrnes GB, Apicella C, Dite GS, Cawson JN, Giles GG, Treloar SA, English DR, Hopper JL, Southey MC. Common Genetic Variants Associated with Breast Cancer and Mammographic Density Measures That Predict Disease. Cancer Res 2010; 70:1449-58. [PMID: 20145138 DOI: 10.1158/0008-5472.can-09-3495] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Fabrice Odefrey
- Department of Pathology and Centre for Molecular, Environmental, Genetic, and Analytic Epidemiology, University of Melbourne, Melbourne 3053, Australia
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