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Xu H, Qiu Q, Hu P, Hoxha K, Jang E, O'Reilly M, Kim C, He Z, Marotta N, Changolkar L, Zhang B, Wu H, Schellenberg GD, Kraemer B, Luk KC, Lee EB, Trojanowski JQ, Brunden KR, Lee VMY. MSUT2 regulates tau spreading via adenosinergic signaling mediated ASAP1 pathway in neurons. Acta Neuropathol 2024; 147:55. [PMID: 38472475 PMCID: PMC10933148 DOI: 10.1007/s00401-024-02703-3] [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: 12/06/2023] [Revised: 02/06/2024] [Accepted: 02/07/2024] [Indexed: 03/14/2024]
Abstract
Inclusions comprised of microtubule-associated protein tau (tau) are implicated in a group of neurodegenerative diseases, collectively known as tauopathies, that include Alzheimer's disease (AD). The spreading of misfolded tau "seeds" along neuronal networks is thought to play a crucial role in the progression of tau pathology. Consequently, restricting the release or uptake of tau seeds may inhibit the spread of tau pathology and potentially halt the advancement of the disease. Previous studies have demonstrated that the Mammalian Suppressor of Tauopathy 2 (MSUT2), an RNA binding protein, modulates tau pathogenesis in a transgenic mouse model. In this study, we investigated the impact of MSUT2 on tau pathogenesis using tau seeding models. Our findings indicate that the loss of MSUT2 mitigates human tau seed-induced pathology in neuron cultures and mouse models. In addition, MSUT2 regulates many gene transcripts, including the Adenosine Receptor 1 (A1AR), and we show that down regulation or inhibition of A1AR modulates the activity of the "ArfGAP with SH3 Domain, Ankyrin Repeat, and PH Domain 1 protein" (ASAP1), thereby influencing the internalization of pathogenic tau seeds into neurons resulting in reduction of tau pathology.
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Affiliation(s)
- Hong Xu
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
| | - Qi Qiu
- Department of Genetics, Penn Epigenetics Institute, Institute of Regenerative Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Peng Hu
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources (Ministry of Education), Shanghai Ocean University, Shanghai, China
| | - Kevt'her Hoxha
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Elliot Jang
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Mia O'Reilly
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Christopher Kim
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Zhuohao He
- Interdisciplinary Research Center On Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 201210, China
- University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Nicholas Marotta
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Lakshmi Changolkar
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Bin Zhang
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Hao Wu
- Department of Genetics, Penn Epigenetics Institute, Institute of Regenerative Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Gerard D Schellenberg
- Department of Pathology and Laboratory Medicine, Penn Neurodegeneration Genomics Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Brian Kraemer
- Geriatric Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, 98108, USA
- Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, Seattle, WA, 98195, USA
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA, 98104, USA
| | - Kelvin C Luk
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Edward B Lee
- Translational Neuropathology Research Laboratory, Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - John Q Trojanowski
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Kurt R Brunden
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Virginia M-Y Lee
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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Effects of empagliflozin on progression of chronic kidney disease: a prespecified secondary analysis from the empa-kidney trial. Lancet Diabetes Endocrinol 2024; 12:39-50. [PMID: 38061371 PMCID: PMC7615591 DOI: 10.1016/s2213-8587(23)00321-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Sodium-glucose co-transporter-2 (SGLT2) inhibitors reduce progression of chronic kidney disease and the risk of cardiovascular morbidity and mortality in a wide range of patients. However, their effects on kidney disease progression in some patients with chronic kidney disease are unclear because few clinical kidney outcomes occurred among such patients in the completed trials. In particular, some guidelines stratify their level of recommendation about who should be treated with SGLT2 inhibitors based on diabetes status and albuminuria. We aimed to assess the effects of empagliflozin on progression of chronic kidney disease both overall and among specific types of participants in the EMPA-KIDNEY trial. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA), and included individuals aged 18 years or older with an estimated glomerular filtration rate (eGFR) of 20 to less than 45 mL/min per 1·73 m2, or with an eGFR of 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher. We explored the effects of 10 mg oral empagliflozin once daily versus placebo on the annualised rate of change in estimated glomerular filtration rate (eGFR slope), a tertiary outcome. We studied the acute slope (from randomisation to 2 months) and chronic slope (from 2 months onwards) separately, using shared parameter models to estimate the latter. Analyses were done in all randomly assigned participants by intention to treat. EMPA-KIDNEY is registered at ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and then followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroups of eGFR included 2282 (34·5%) participants with an eGFR of less than 30 mL/min per 1·73 m2, 2928 (44·3%) with an eGFR of 30 to less than 45 mL/min per 1·73 m2, and 1399 (21·2%) with an eGFR 45 mL/min per 1·73 m2 or higher. Prespecified subgroups of uACR included 1328 (20·1%) with a uACR of less than 30 mg/g, 1864 (28·2%) with a uACR of 30 to 300 mg/g, and 3417 (51·7%) with a uACR of more than 300 mg/g. Overall, allocation to empagliflozin caused an acute 2·12 mL/min per 1·73 m2 (95% CI 1·83-2·41) reduction in eGFR, equivalent to a 6% (5-6) dip in the first 2 months. After this, it halved the chronic slope from -2·75 to -1·37 mL/min per 1·73 m2 per year (relative difference 50%, 95% CI 42-58). The absolute and relative benefits of empagliflozin on the magnitude of the chronic slope varied significantly depending on diabetes status and baseline levels of eGFR and uACR. In particular, the absolute difference in chronic slopes was lower in patients with lower baseline uACR, but because this group progressed more slowly than those with higher uACR, this translated to a larger relative difference in chronic slopes in this group (86% [36-136] reduction in the chronic slope among those with baseline uACR <30 mg/g compared with a 29% [19-38] reduction for those with baseline uACR ≥2000 mg/g; ptrend<0·0001). INTERPRETATION Empagliflozin slowed the rate of progression of chronic kidney disease among all types of participant in the EMPA-KIDNEY trial, including those with little albuminuria. Albuminuria alone should not be used to determine whether to treat with an SGLT2 inhibitor. FUNDING Boehringer Ingelheim and Eli Lilly.
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P, Pesce F, Pessolano G, Petchey W, Petr EJ, Pfab T, Phelan P, Phillips R, Phillips T, Phipps M, Piccinni G, Pickett T, Pickworth S, Piemontese M, Pinto D, Piper J, Plummer-Morgan J, Poehler D, Polese L, Poma V, Pontremoli R, Postal A, Pötz C, Power A, Pradhan N, Pradhan R, Preiss D, Preiss E, Preston K, Prib N, Price L, Provenzano C, Pugay C, Pulido R, Putz F, Qiao Y, Quartagno R, Quashie-Akponeware M, Rabara R, Rabasa-Lhoret R, Radhakrishnan D, Radley M, Raff R, Raguwaran S, Rahbari-Oskoui F, Rahman M, Rahmat K, Ramadoss S, Ramanaidu S, Ramasamy S, Ramli R, Ramli S, Ramsey T, Rankin A, Rashidi A, Raymond L, Razali WAFA, Read K, Reiner H, Reisler A, Reith C, Renner J, Rettenmaier B, Richmond L, Rijos D, Rivera R, Rivers V, Robinson H, Rocco M, Rodriguez-Bachiller I, Rodriquez R, Roesch C, Roesch J, Rogers J, Rohnstock M, Rolfsmeier S, Roman M, Romo A, Rosati A, Rosenberg S, Ross T, Rossello X, Roura M, Roussel M, Rovner S, Roy S, Rucker S, Rump L, Ruocco M, Ruse S, Russo F, Russo M, Ryder M, Sabarai A, Saccà C, Sachson R, Sadler E, Safiee NS, Sahani M, Saillant A, Saini J, Saito C, Saito S, Sakaguchi K, Sakai M, Salim H, Salviani C, Sammons E, Sampson A, Samson F, Sandercock P, Sanguila S, Santorelli G, Santoro D, Sarabu N, Saram T, Sardell R, Sasajima H, Sasaki T, Satko S, Sato A, Sato D, Sato H, Sato H, Sato J, Sato T, Sato Y, Satoh M, Sawada K, Schanz M, Scheidemantel F, Schemmelmann M, Schettler E, Schettler V, Schlieper GR, Schmidt C, Schmidt G, Schmidt U, Schmidt-Gurtler H, Schmude M, Schneider A, Schneider I, Schneider-Danwitz C, Schomig M, Schramm T, Schreiber A, Schricker S, Schroppel B, Schulte-Kemna L, Schulz E, Schumacher B, Schuster A, Schwab A, Scolari F, Scott A, Seeger W, Seeger W, Segal M, Seifert L, Seifert M, Sekiya M, Sellars R, Seman MR, Shah S, Shah S, Shainberg L, Shanmuganathan M, Shao F, Sharma K, Sharpe C, Sheikh-Ali M, Sheldon J, Shenton C, Shepherd A, Shepperd M, Sheridan R, Sheriff Z, Shibata Y, Shigehara T, Shikata K, Shimamura K, Shimano H, Shimizu Y, Shimoda H, Shin K, Shivashankar G, Shojima N, Silva R, Sim CSB, Simmons K, Sinha S, Sitter T, Sivanandam S, Skipper M, Sloan K, Sloan L, Smith R, Smyth J, Sobande T, Sobata M, Somalanka S, Song X, Sonntag F, Sood B, Sor SY, Soufer J, Sparks H, Spatoliatore G, Spinola T, Squyres S, Srivastava A, Stanfield J, Staplin N, Staylor K, Steele A, Steen O, Steffl D, Stegbauer J, Stellbrink C, Stellbrink E, Stevens W, Stevenson A, Stewart-Ray V, Stickley J, Stoffler D, Stratmann B, Streitenberger S, Strutz F, Stubbs J, Stumpf J, Suazo N, Suchinda P, Suckling R, Sudin A, Sugamori K, Sugawara H, Sugawara K, Sugimoto D, Sugiyama H, Sugiyama H, Sugiyama T, Sullivan M, Sumi M, Suresh N, Sutton D, Suzuki H, Suzuki R, Suzuki Y, Suzuki Y, Suzuki Y, Swanson E, Swift P, Syed S, Szerlip H, Taal M, Taddeo M, Tailor C, Tajima K, Takagi M, Takahashi K, Takahashi K, Takahashi M, Takahashi T, Takahira E, Takai T, Takaoka M, Takeoka J, Takesada A, Takezawa M, Talbot M, Taliercio J, Talsania T, Tamori Y, Tamura R, Tamura Y, Tan CHH, Tan EZZ, Tanabe A, Tanabe K, Tanaka A, Tanaka A, Tanaka N, Tang S, Tang Z, Tanigaki K, Tarlac M, Tatsuzawa A, Tay JF, Tay LL, Taylor J, Taylor K, Taylor K, Te A, Tenbusch L, Teng KS, Terakawa A, Terry J, Tham ZD, Tholl S, Thomas G, Thong KM, Tietjen D, Timadjer A, Tindall H, Tipper S, Tobin K, Toda N, Tokuyama A, Tolibas M, Tomita A, Tomita T, Tomlinson J, Tonks L, Topf J, Topping S, Torp A, Torres A, Totaro F, Toth P, Toyonaga Y, Tripodi F, Trivedi K, Tropman E, Tschope D, Tse J, Tsuji K, Tsunekawa S, Tsunoda R, Tucky B, Tufail S, Tuffaha A, Turan E, Turner H, Turner J, Turner M, Tuttle KR, Tye YL, Tyler A, Tyler J, Uchi H, Uchida H, Uchida T, Uchida T, Udagawa T, Ueda S, Ueda Y, Ueki K, Ugni S, Ugwu E, Umeno R, Unekawa C, Uozumi K, Urquia K, Valleteau A, Valletta C, van Erp R, Vanhoy C, Varad V, Varma R, Varughese A, Vasquez P, Vasseur A, Veelken R, Velagapudi C, Verdel K, Vettoretti S, Vezzoli G, Vielhauer V, Viera R, Vilar E, Villaruel S, Vinall L, Vinathan J, Visnjic M, Voigt E, von-Eynatten M, Vourvou M, Wada J, Wada J, Wada T, Wada Y, Wakayama K, Wakita Y, Wallendszus K, Walters T, Wan Mohamad WH, Wang L, Wang W, Wang X, Wang X, Wang Y, Wanner C, Wanninayake S, Watada H, Watanabe K, Watanabe K, Watanabe M, Waterfall H, Watkins D, Watson S, Weaving L, Weber B, Webley Y, Webster A, Webster M, Weetman M, Wei W, Weihprecht H, Weiland L, Weinmann-Menke J, Weinreich T, Wendt R, Weng Y, Whalen M, Whalley G, Wheatley R, Wheeler A, Wheeler J, Whelton P, White K, Whitmore B, Whittaker S, Wiebel J, Wiley J, Wilkinson L, Willett M, Williams A, Williams E, Williams K, Williams T, Wilson A, Wilson P, Wincott L, Wines E, Winkelmann B, Winkler M, Winter-Goodwin B, Witczak J, Wittes J, Wittmann M, Wolf G, Wolf L, Wolfling R, Wong C, Wong E, Wong HS, Wong LW, Wong YH, Wonnacott A, Wood A, Wood L, Woodhouse H, Wooding N, Woodman A, Wren K, Wu J, Wu P, Xia S, Xiao H, Xiao X, Xie Y, Xu C, Xu Y, Xue H, Yahaya H, Yalamanchili H, Yamada A, Yamada N, Yamagata K, Yamaguchi M, Yamaji Y, Yamamoto A, Yamamoto S, Yamamoto S, Yamamoto T, Yamanaka A, Yamano T, Yamanouchi Y, Yamasaki N, Yamasaki Y, Yamasaki Y, Yamashita C, Yamauchi T, Yan Q, Yanagisawa E, Yang F, Yang L, Yano S, Yao S, Yao Y, Yarlagadda S, Yasuda Y, Yiu V, Yokoyama T, Yoshida S, Yoshidome E, Yoshikawa H, Young A, Young T, Yousif V, Yu H, Yu Y, Yuasa K, Yusof N, Zalunardo N, Zander B, Zani R, Zappulo F, Zayed M, Zemann B, Zettergren P, Zhang H, Zhang L, Zhang L, Zhang N, Zhang X, Zhao J, Zhao L, Zhao S, Zhao Z, Zhong H, Zhou N, Zhou S, Zhu D, Zhu L, Zhu S, Zietz M, Zippo M, Zirino F, Zulkipli FH. Impact of primary kidney disease on the effects of empagliflozin in patients with chronic kidney disease: secondary analyses of the EMPA-KIDNEY trial. Lancet Diabetes Endocrinol 2024; 12:51-60. [PMID: 38061372 DOI: 10.1016/s2213-8587(23)00322-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND The EMPA-KIDNEY trial showed that empagliflozin reduced the risk of the primary composite outcome of kidney disease progression or cardiovascular death in patients with chronic kidney disease mainly through slowing progression. We aimed to assess how effects of empagliflozin might differ by primary kidney disease across its broad population. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA). Patients were eligible if their estimated glomerular filtration rate (eGFR) was 20 to less than 45 mL/min per 1·73 m2, or 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher at screening. They were randomly assigned (1:1) to 10 mg oral empagliflozin once daily or matching placebo. Effects on kidney disease progression (defined as a sustained ≥40% eGFR decline from randomisation, end-stage kidney disease, a sustained eGFR below 10 mL/min per 1·73 m2, or death from kidney failure) were assessed using prespecified Cox models, and eGFR slope analyses used shared parameter models. Subgroup comparisons were performed by including relevant interaction terms in models. EMPA-KIDNEY is registered with ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroupings by primary kidney disease included 2057 (31·1%) participants with diabetic kidney disease, 1669 (25·3%) with glomerular disease, 1445 (21·9%) with hypertensive or renovascular disease, and 1438 (21·8%) with other or unknown causes. Kidney disease progression occurred in 384 (11·6%) of 3304 patients in the empagliflozin group and 504 (15·2%) of 3305 patients in the placebo group (hazard ratio 0·71 [95% CI 0·62-0·81]), with no evidence that the relative effect size varied significantly by primary kidney disease (pheterogeneity=0·62). The between-group difference in chronic eGFR slopes (ie, from 2 months to final follow-up) was 1·37 mL/min per 1·73 m2 per year (95% CI 1·16-1·59), representing a 50% (42-58) reduction in the rate of chronic eGFR decline. This relative effect of empagliflozin on chronic eGFR slope was similar in analyses by different primary kidney diseases, including in explorations by type of glomerular disease and diabetes (p values for heterogeneity all >0·1). INTERPRETATION In a broad range of patients with chronic kidney disease at risk of progression, including a wide range of non-diabetic causes of chronic kidney disease, empagliflozin reduced risk of kidney disease progression. Relative effect sizes were broadly similar irrespective of the cause of primary kidney disease, suggesting that SGLT2 inhibitors should be part of a standard of care to minimise risk of kidney failure in chronic kidney disease. FUNDING Boehringer Ingelheim, Eli Lilly, and UK Medical Research Council.
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Wheeler JM, McMillan P, Strovas TJ, Liachko NF, Amlie-Wolf A, Kow RL, Klein RL, Szot P, Robinson L, Guthrie C, Saxton A, Kanaan NM, Raskind M, Peskind E, Trojanowski JQ, Lee VMY, Wang LS, Keene CD, Bird T, Schellenberg GD, Kraemer B. Activity of the poly(A) binding protein MSUT2 determines susceptibility to pathological tau in the mammalian brain. Sci Transl Med 2020; 11:11/523/eaao6545. [PMID: 31852801 DOI: 10.1126/scitranslmed.aao6545] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 06/20/2019] [Indexed: 12/15/2022]
Abstract
Brain lesions composed of pathological tau help to drive neurodegeneration in Alzheimer's disease (AD) and related tauopathies. Here, we identified the mammalian suppressor of tauopathy 2 (MSUT2) gene as a modifier of susceptibility to tau toxicity in two mouse models of tauopathy. Transgenic PS19 mice overexpressing tau, a model of AD, and lacking the Msut2 gene exhibited decreased learning and memory deficits, reduced neurodegeneration, and reduced accumulation of pathological tau compared to PS19 tau transgenic mice expressing Msut2 Conversely, Msut2 overexpression in 4RTauTg2652 tau transgenic mice increased pathological tau deposition and promoted the neuroinflammatory response to pathological tau. MSUT2 is a poly(A) RNA binding protein that antagonizes the canonical nuclear poly(A) binding protein PABPN1. In individuals with AD, MSUT2 abundance in postmortem brain tissue predicted an earlier age of disease onset. Postmortem AD brain tissue samples with normal amounts of MSUT2 showed elevated neuroinflammation associated with tau pathology. We observed co-depletion of MSUT2 and PABPN1 in postmortem brain samples from a subset of AD cases with higher tau burden and increased neuronal loss. This suggested that MSUT2 and PABPN1 may act together in a macromolecular complex bound to poly(A) RNA. Although MSUT2 and PABPN1 had opposing effects on both tau aggregation and poly(A) RNA tail length, we found that increased poly(A) tail length did not ameliorate tauopathy, implicating other functions of the MSUT2/PABPN1 complex in tau proteostasis. Our findings implicate poly(A) RNA binding proteins both as modulators of pathological tau toxicity in AD and as potential molecular targets for interventions to slow neurodegeneration in tauopathies.
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Affiliation(s)
- Jeanna M Wheeler
- Geriatric Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA
| | - Pamela McMillan
- Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, Seattle, WA 98195, USA
| | - Timothy J Strovas
- Geriatric Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA
| | - Nicole F Liachko
- Geriatric Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA.,Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98104, USA
| | - Alexandre Amlie-Wolf
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Rebecca L Kow
- Geriatric Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA.,Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98104, USA
| | - Ronald L Klein
- Department of Pharmacology, Toxicology and Neuroscience, Louisiana State University Health Sciences Center, Shreveport, LA 71130, USA
| | - Patricia Szot
- Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, Seattle, WA 98195, USA.,Mental Illness Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA
| | - Linda Robinson
- Geriatric Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA
| | - Chris Guthrie
- Geriatric Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA
| | - Aleen Saxton
- Geriatric Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA
| | - Nicholas M Kanaan
- Department of Translational Sciences and Molecular Medicine, College of Human Medicine, Michigan State University, Grand Rapids, MI 49503, USA
| | - Murray Raskind
- Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, Seattle, WA 98195, USA.,Mental Illness Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA
| | - Elaine Peskind
- Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, Seattle, WA 98195, USA.,Mental Illness Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA
| | - John Q Trojanowski
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Virginia M Y Lee
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Li-San Wang
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - C Dirk Keene
- Department of Pathology, University of Washington School of Medicine, Seattle, WA 98195, USA
| | - Thomas Bird
- Geriatric Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA.,Department of Neurology, University of Washington School of Medicine, Seattle, WA 98195, USA.,Division of Medical Genetics, Department of Medicine, University of Washington, Seattle, WA 98104, USA
| | - Gerard D Schellenberg
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Brian Kraemer
- Geriatric Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA. .,Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, Seattle, WA 98195, USA.,Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98104, USA.,Department of Pathology, University of Washington School of Medicine, Seattle, WA 98195, USA
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Dr. Patroi A, Diekmann L, Lorenz HM, Kraemer B, Benesova K, Leipe J. AB1021 CHARACTERISTICS AND MANAGEMENT OF RHEUMATIC MANIFESTATION UNDER ESTROGEN RECEPTOR-TARGETING CANCER THERAPIES, DATA FROM A PROSPECTIVE REGISTRY. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.6431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:The knowledge about interdependencies between rheumatic manifestations and malignancies is limited. Further, reliable data on the occurrence of rheumatic symptoms as side effects of specific cancer therapies beyond checkpointinhibitor-induced immune-related adverse events are sparse. In this regard, although arthralgia under estrogen receptor-targeting therapies (aromatase inhibitors and the estrogen receptor modulator tamoxifen) has been frequently reported in oncological clinical trials and case reports, prospective data including an assessment of rheumatic manifestations by rheumatologists are lacking.Objectives:To contribute to a better understanding of interdependencies between rheumatic manifestations and cancer/ estrogen blockade and potentially improve the management of both entities, pilot data were analysed.Methods:Data on characteristics and treatment of rheumatic manifestations and cancer as well as their timely association were systematically, prospectively collected and analysed in the MalheuR (´malignancy and rheumatic disease´) registry, a long-term, observational study designed to study patients suffering from concomitant rheumatic disease and malignancy and/or premalignant lesions.Results:We identified 11 patients with rheumatic manifestations under estrogen receptor-targeting therapies (3 anastrozol, 4 letrozol, 8 tamoxifen) as part of breast cancer treatment. In addition to breast cancer one patient had a lymphoma 3 years after and another patient had a non-small cell lung cancer 2 years before breast cancer diagnosis. The patients had different cancer stages (5 IA, 3 IIA, 1 IIB, and 1 IVA). Their mean age at cancer diagnosis was 60.4 ± 11.6 years and all patients are females. The time interval between diagnosis of cancer and onset of systemic/ rheumatic symptoms was 49.5 ± 34.0 months. Of interest, the time interval between onset of rheumatic symptoms and first assessment by a rheumatologist was 16.9 ± 22.3 months. The following systemic and rheumatic symptoms were reported: arthralgia in 10, arthritis in 8 (small joints in 5, large joints in 3 affected), morning stiffness (>30 min) in 7, IBP in 1, myalgia in 7, sicca symptoms in 2, fever in 1 (new-onset FMF with heterozygous M694U mutation), class IV glomerulonephritis and polyserositis in 1 (with new-onset SLE) patient(s). Disease burden at baseline was rather high with a mean VAS pain of 65 (±12.9)/100. Laboratory analyses revealed an increased CRP in 6/11 (55%) with a mean of 10.3 ± 8.2 mg/l (<5). Autoantibody positivity was observed for ANAs in 5/10 (50%, titers ranging from 1:80 to 1:160), anti-dsDNA in 1, rheumatoid factor in only 1/10 (10%) patients, none was anti-CCP positive. Before consulting a rheumatologist, patients were treated with NSAR 3/11 (27%), 10/11 systemic glucocorticoids (91%) with an initial dose of 17.5 ± 19.5 mg and intra-articular glucocorticoids 1/11 (9%). Rheumatological assessment lead to initiation of csDMARDs (3/11 MTX, 1/11 SSZ, 1/11 HCQ, 1/11 AZA (later MMF/ rituximab in the SLE patient) 1/11 colchicine) as corticosteroid-sparing agents with good response in the majority of patients.Conclusion:Our data demonstrate heterogeneous rheumatic manifestations, partially with severe manifestations beyond arthralgia, so far not reported by oncological studies including follow-up, which might suggest an underreporting. Furthermore, despite close monitoring in tumor aftercare, our data show a considerable delay in referral to a rheumatologist and initiation of suitable treatment. The prospective design of the MalheuR registry enables future validation of our pilot data.Disclosure of Interests:Alina Dr. Patroi Consultant of: Advisory board Novartis, Leonore Diekmann: None declared, Hanns-Martin Lorenz Grant/research support from: Consultancy and/or speaker fees and/or travel reimbursements: Abbvie, MSD, BMS, Pfizer, Celgene, Medac, GSK, Roche, Chugai, Novartis, UCB, Janssen-Cilag, Astra-Zeneca, Lilly. Scientific support and/or educational seminars and/or clinical studies: Abbvie, MSD, BMS, Pfizer, Celgene, Medac, GSK, Roche, Chugai, Novartis, UCB, Janssen-Cilag, Astra-Zeneca, Lilly, Baxter, SOBI, Biogen, Actelion, Bayer Vital, Shire, Octapharm, Sanofi, Hexal, Mundipharm, Thermo Fisher., Consultant of: see above, Bernhard. Kraemer: None declared, Karolina Benesova Grant/research support from: Study grants for SCREENED study by Abbvie, Novartis and Rheumaliga Baden-Württemberg, Consultant of: One-time participation in Novartis advisory board., Jan Leipe Grant/research support from: Consultancy and speaker fees: Abbvie, AstraZeneca, BMS, Celgene, Hospira, Janssen-Cilag, LEO Pharma, Lilly, MSD, Novartis, Pfizer, Roche, Sanofi, UCB. Scientific support: Novartis, Pfizer., Consultant of: Consultancy and speaker fees: Abbvie, AstraZeneca, BMS, Celgene, Hospira, Janssen-Cilag, LEO Pharma, Lilly, MSD, Novartis, Pfizer, Roche, Sanofi, UCB. Scientific support: Novartis, Pfizer., Speakers bureau: Abbvie, AstraZeneca, BMS, Celgene, Hospira, Janssen-Cilag, LEO Pharma, Lilly, MSD, Novartis, Pfizer, Roche, Sanofi, UCB
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Lee EG, Tulloch J, Chen S, Leong L, Saxton AD, Kraemer B, Darvas M, Keene CD, Shutes-David A, Todd K, Millard S, Yu CE. Redefining transcriptional regulation of the APOE gene and its association with Alzheimer's disease. PLoS One 2020; 15:e0227667. [PMID: 31978088 PMCID: PMC6980611 DOI: 10.1371/journal.pone.0227667] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [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: 09/11/2019] [Accepted: 12/24/2019] [Indexed: 01/09/2023] Open
Abstract
The apolipoprotein E gene (APOE) is the strongest genetic risk factor for late-onset Alzheimer's disease (AD), yet the expression of APOE is not clearly understood. For example, it is unclear whether AD patients have elevated or decreased APOE expression or why the correlation levels of APOE RNA and the ApoE protein differ across studies. Likewise, APOE has a single CpG island (CGI) that overlaps with its 3'-exon, and this CGI's effect is unknown. We previously reported that the APOE CGI is highly methylated in human postmortem brain (PMB) and that this methylation is altered in AD frontal lobe. In this study, we comprehensively characterized APOE RNA transcripts and correlated levels of RNA expression with DNA methylation levels across the APOE CGI. We discovered the presence of APOE circular RNA (circRNA) and found that circRNA and full-length mRNA each constitute approximately one third of the total APOE RNA, with truncated mRNAs likely constituting some of the missing fraction. All APOE RNA species demonstrated significantly higher expression in AD frontal lobe than in control frontal lobe. Furthermore, we observed a negative correlation between the levels of total APOE RNA and DNA methylation at the APOE CGI in the frontal lobe. When stratified by disease status, this correlation was strengthened in controls but not in AD. Our findings suggest a possible modified mechanism of gene action for APOE in AD that involves not only the protein isoforms but also an epigenetically regulated transcriptional program driven by DNA methylation in the APOE CGI.
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Affiliation(s)
- Eun-Gyung Lee
- Geriatric Research, Education, and Clinical Center, VA Puget Sound Health Care System, Seattle, WA, United States of America
| | - Jessica Tulloch
- Geriatric Research, Education, and Clinical Center, VA Puget Sound Health Care System, Seattle, WA, United States of America
| | - Sunny Chen
- Geriatric Research, Education, and Clinical Center, VA Puget Sound Health Care System, Seattle, WA, United States of America
| | - Lesley Leong
- Geriatric Research, Education, and Clinical Center, VA Puget Sound Health Care System, Seattle, WA, United States of America
| | - Aleen D. Saxton
- Geriatric Research, Education, and Clinical Center, VA Puget Sound Health Care System, Seattle, WA, United States of America
| | - Brian Kraemer
- Geriatric Research, Education, and Clinical Center, VA Puget Sound Health Care System, Seattle, WA, United States of America
- Department of Medicine, University of Washington, Seattle, WA, United States of America
| | - Martin Darvas
- Department of Pathology, University of Washington, Seattle, WA, United States of America
| | - C. Dirk Keene
- Department of Pathology, University of Washington, Seattle, WA, United States of America
| | - Andrew Shutes-David
- Geriatric Research, Education, and Clinical Center, VA Puget Sound Health Care System, Seattle, WA, United States of America
| | - Kaitlin Todd
- Geriatric Research, Education, and Clinical Center, VA Puget Sound Health Care System, Seattle, WA, United States of America
| | - Steve Millard
- Geriatric Research, Education, and Clinical Center, VA Puget Sound Health Care System, Seattle, WA, United States of America
| | - Chang-En Yu
- Geriatric Research, Education, and Clinical Center, VA Puget Sound Health Care System, Seattle, WA, United States of America
- Department of Medicine, University of Washington, Seattle, WA, United States of America
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Hoffmann SM, Kappel D, Fech A, Enderle MD, Weiss M, Hahn M, Brucker SY, Kraemer B. Thermal effects of a novel electrosurgical device for focused preparation in breast surgery tested in a specified porcine tissue ex vivo breast model using infrared measurement. Arch Gynecol Obstet 2019; 299:835-840. [PMID: 30607596 DOI: 10.1007/s00404-018-5024-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 12/14/2018] [Indexed: 11/25/2022]
Abstract
PURPOSE This article investigates the qualities and thermal effects of a novel electrosurgical device (PT) which has been designed by ERBE Elektromedizin GmbH, Germany, for the preparation of critical locations such as in skin-sparing or nipple-sparing techniques and compares it to a standard device (SD) in a porcine ex vivo breast model using an heat map generated by infrared thermography. METHODS In total, 42 abdominal wall specimens of porcine tissue consisting of the skin and the underlying subcutaneous and muscle layer were alternately dissected using one of the devices and pre-settings. During the preparation with the two devices, the epicutaneous temperature was measured by an infrared camera (VarioCam, Jenoptik, Germany) and the maximum temperature as well as the slope of the temperature rise was analysed. RESULTS The use of PT shows significantly lower values for [Formula: see text] compared to SD. This effect was independent from the chosen mode. Using the same instrument in different modes, the use of AutoCut mode showed a significant reduction of [Formula: see text] at all indicated time points (SD: p < 0.0001 and PT: p < 0.0001). In summary, the combination of AutoCut + PT showed the lowest rise in temperature, whereas the combination of DryCut + SD led to the highest rise in temperature. The temperature difference between these two settings was 13.84 °C, which means a possible temperature reduction of 67% can be achieved by the right choice of device and its tailored mode. CONCLUSIONS The novel PT shows a significant reduction in epicutaneous temperature and a significant reduction of the slope of temperature rise most probably by a more focused application of energy compared to SD.
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Affiliation(s)
- S M Hoffmann
- Department of Obstetrics and Gynecology, University of Tübingen, Calwerstrasse 7, 72076, Tübingen, Germany.
| | - D Kappel
- Department of Obstetrics and Gynecology, University of Tübingen, Calwerstrasse 7, 72076, Tübingen, Germany
| | - A Fech
- ERBE Elektromedizin GmbH, Waldhoernlestr. 17, 72070, Tübingen, Germany
| | - M D Enderle
- ERBE Elektromedizin GmbH, Waldhoernlestr. 17, 72070, Tübingen, Germany
| | - M Weiss
- Department of Obstetrics and Gynecology, University of Tübingen, Calwerstrasse 7, 72076, Tübingen, Germany
| | - M Hahn
- Department of Obstetrics and Gynecology, University of Tübingen, Calwerstrasse 7, 72076, Tübingen, Germany
| | - S Y Brucker
- Department of Obstetrics and Gynecology, University of Tübingen, Calwerstrasse 7, 72076, Tübingen, Germany
| | - B Kraemer
- Department of Obstetrics and Gynecology, University of Tübingen, Calwerstrasse 7, 72076, Tübingen, Germany
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Pfeifer P, Steinmetz M, Habel S, Lorenz J, Ackerschott A, Dregger H, Jehle J, Kraemer B, Nickenig G, Latz E, Zimmer S. P2713CLEC4E expression in human atherosclerosis and on circulating monocytes of patients with coronary artery disease and myocardial infarction. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Al-Bayati M, Gruber O, Kraemer B, Zilles D. Der Einfluss von Urbanicity auf Stressverarbeitungsmechanismen – eine fMRT-Studie. ROFO-FORTSCHR RONTG 2017. [DOI: 10.1055/s-0037-1600379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- M Al-Bayati
- Universitätsklinikum Essen, Institut für Diagnostische und Interventionelle Radiologie und Neuroradiologie, Essen
| | - O Gruber
- Universitätsklinikum Heidelberg, Zentrum für psychosoziale Medizin, Heidelberg
| | - B Kraemer
- Universitätsklinikum Heidelberg, Zentrum für psychosoziale Medizin, Heidelberg
| | - D Zilles
- Universitätsmedizin Göttingen, Klinik für Psychiatrie und Psychotherapie, Göttingen
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Trew GH, Pistofidis GA, Brucker SY, Kraemer B, Ziegler NM, Korell M, Diamond MP, De Wilde RL. Twelve Month Follow-Up of a First-In-Human (FIH), Randomized, Controlled, Subject- and Reviewer-Blinded Study of a Degradable Hydrogel Adhesion Barrier Spray (Actamax™ Adhesion Barrier) Applied to All Sites of Surgical Trauma Following Gynecologic Laparoscopic Surgery. J Minim Invasive Gynecol 2016. [DOI: 10.1016/j.jmig.2016.08.685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Zaby K, McConechy MK, Färkkilä A, Horlings HM, Talhouk A, Unkila-Kallio L, van Meurs HS, Yang W, Rozenberg N, Andersson N, Bryk S, Bützow R, Halfwerk JBG, Hooijer GKJ, van de Vijver MJ, Buist MR, Kenter GG, Brucker SY, Kraemer B, Staebler A, Bleeker MCG, Heikinheimo M, Gilks CB, Anttonen M, Huntsman DG, Kommoss S. Adulte Granulosazelltumoren: FOXL2-Mutation als Grundlage zur Bereinigung bisheriger Studienkollektive und kritischen Analyse derzeitiger Behandlungskonzepte. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1593238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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12
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Keene CD, Darvas M, Kraemer B, Liggitt D, Sigurdson C, Ladiges W. Neuropathological assessment and validation of mouse models for Alzheimer's disease: applying NIA-AA guidelines. Pathobiol Aging Age Relat Dis 2016; 6:32397. [PMID: 27317189 PMCID: PMC4912600 DOI: 10.3402/pba.v6.32397] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 05/25/2016] [Indexed: 11/14/2022]
Abstract
Dozens of transgenic mouse models, generally based on mutations associated with familial Alzheimer's disease (AD), have been developed, in part, for preclinical testing of candidate AD therapies. However, none of these models has successfully predicted the clinical efficacy of drugs for treating AD patients. Therefore, development of more translationally relevant AD mouse models remains a critical unmet need in the field. A concept not previously implemented in AD preclinical drug testing is the use of mouse lines that have been validated for neuropathological features of human AD. Current thinking suggests that amyloid plaque and neurofibrillary tangle deposition is an essential component for accurate modeling of AD. Therefore, the AD translational paradigm would require pathologic Aβ and tau deposition, a disease-relevant distribution of plaques and tangles, and a pattern of disease progression of Aβ and tau isoforms similar to the neuropathological features found in the brains of AD patients. Additional parameters useful to evaluate parallels between AD and animal models would include 1) cerebrospinal fluid (CSF) AD biomarker changes with reduced Aβ and increased phospho-tau/tau; 2) structural and functional neuroimaging patterns including MRI hippocampal atrophy, fluorodeoxyglucose (FDG), and amyloid/tau PET alterations in activity and/or patterns of pathologic peptide deposition and distribution; and 3) cognitive impairment with emphasis on spatial learning and memory to distinguish presymptomatic and symptomatic mice at specific ages. A validated AD mouse model for drug testing would likely show tau-related neurofibrillary degeneration following Aβ deposition and demonstrate changes in pathology, CSF analysis, and neuroimaging that mirror human AD. Development of the ideal model would revolutionize the ability to establish the translational value of AD mouse models and serve as a platform for discussions about national phenotyping guidelines and standards for models of AD and other neurodegenerative disorders.
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Affiliation(s)
- C Dirk Keene
- Department of Pathology, University of Washington, Seattle, WA, USA
| | - Martin Darvas
- Department of Pathology, University of Washington, Seattle, WA, USA
| | - Brian Kraemer
- Geriatrics Research, Education and Clinical Center, Veterans Affairs Puget Sound Health Care Systems, Seattle, WA, USA.,Division of Gerontology and Geriatrics Medicine, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Denny Liggitt
- Department of Comparative Medicine, University of Washington, Seattle, WA, USA
| | - Christina Sigurdson
- Department of Pathology, University of California at San Diego, La Jolla, CA, USA.,Scripps Research Institute, La Jolla, CA, USA
| | - Warren Ladiges
- Department of Pathology, University of Washington, Seattle, WA, USA.,Department of Comparative Medicine, University of Washington, Seattle, WA, USA;
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van Erp TGM, Hibar DP, Rasmussen JM, Glahn DC, Pearlson GD, Andreassen OA, Agartz I, Westlye LT, Haukvik UK, Dale AM, Melle I, Hartberg CB, Gruber O, Kraemer B, Zilles D, Donohoe G, Kelly S, McDonald C, Morris DW, Cannon DM, Corvin A, Machielsen MWJ, Koenders L, de Haan L, Veltman DJ, Satterthwaite TD, Wolf DH, Gur RC, Gur RE, Potkin SG, Mathalon DH, Mueller BA, Preda A, Macciardi F, Ehrlich S, Walton E, Hass J, Calhoun VD, Bockholt HJ, Sponheim SR, Shoemaker JM, van Haren NEM, Pol HEH, Ophoff RA, Kahn RS, Roiz-Santiañez R, Crespo-Facorro B, Wang L, Alpert KI, Jönsson EG, Dimitrova R, Bois C, Whalley HC, McIntosh AM, Lawrie SM, Hashimoto R, Thompson PM, Turner JA. Subcortical brain volume abnormalities in 2028 individuals with schizophrenia and 2540 healthy controls via the ENIGMA consortium. Mol Psychiatry 2016; 21:547-53. [PMID: 26033243 PMCID: PMC4668237 DOI: 10.1038/mp.2015.63] [Citation(s) in RCA: 596] [Impact Index Per Article: 74.5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 03/05/2015] [Accepted: 03/18/2015] [Indexed: 12/17/2022]
Abstract
The profile of brain structural abnormalities in schizophrenia is still not fully understood, despite decades of research using brain scans. To validate a prospective meta-analysis approach to analyzing multicenter neuroimaging data, we analyzed brain MRI scans from 2028 schizophrenia patients and 2540 healthy controls, assessed with standardized methods at 15 centers worldwide. We identified subcortical brain volumes that differentiated patients from controls, and ranked them according to their effect sizes. Compared with healthy controls, patients with schizophrenia had smaller hippocampus (Cohen's d=-0.46), amygdala (d=-0.31), thalamus (d=-0.31), accumbens (d=-0.25) and intracranial volumes (d=-0.12), as well as larger pallidum (d=0.21) and lateral ventricle volumes (d=0.37). Putamen and pallidum volume augmentations were positively associated with duration of illness and hippocampal deficits scaled with the proportion of unmedicated patients. Worldwide cooperative analyses of brain imaging data support a profile of subcortical abnormalities in schizophrenia, which is consistent with that based on traditional meta-analytic approaches. This first ENIGMA Schizophrenia Working Group study validates that collaborative data analyses can readily be used across brain phenotypes and disorders and encourages analysis and data sharing efforts to further our understanding of severe mental illness.
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Affiliation(s)
- T G M van Erp
- Department of Psychiatry and Human Behavior, University of California, Irvine, CA, USA
| | - D P Hibar
- Imaging Genetics Center, University of Southern California, Los Angeles, CA, USA
| | - J M Rasmussen
- Department of Psychiatry and Human Behavior, University of California, Irvine, CA, USA
| | - D C Glahn
- Department of Psychiatry, Yale University, New Haven, CT, USA
- Olin Neuropsychiatric Research Center, Institute of Living, Hartford, CT, USA
| | - G D Pearlson
- Department of Psychiatry, Yale University, New Haven, CT, USA
- Olin Neuropsychiatric Research Center, Institute of Living, Hartford, CT, USA
| | - O A Andreassen
- Norwegian Centre for Mental Disorders Research (NORMENT), KG Jebsen Centre for Psychosis Research, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
| | - I Agartz
- Norwegian Centre for Mental Disorders Research (NORMENT), KG Jebsen Centre for Psychosis Research, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
- Department of Psychiatric Research, Diakonhjemmet Hospital, Oslo, Norway
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - L T Westlye
- Norwegian Centre for Mental Disorders Research (NORMENT), KG Jebsen Centre for Psychosis Research, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
- Department of Psychology, University of Oslo, Oslo, Norway
| | - U K Haukvik
- Norwegian Centre for Mental Disorders Research (NORMENT), KG Jebsen Centre for Psychosis Research, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
| | - A M Dale
- MMIL, Department of Radiology, University of California, San Diego, CA, USA
- Department of Cognitive Science, Neurosciences and Psychiatry, University of California, San Diego, CA, USA
| | - I Melle
- Norwegian Centre for Mental Disorders Research (NORMENT), KG Jebsen Centre for Psychosis Research, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
| | - C B Hartberg
- Norwegian Centre for Mental Disorders Research (NORMENT), KG Jebsen Centre for Psychosis Research, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
- Department of Psychiatric Research, Diakonhjemmet Hospital, Oslo, Norway
| | - O Gruber
- Department of Psychiatry, University Medical Center Göttingen, Göttingen, Germany
| | - B Kraemer
- Department of Psychiatry, University Medical Center Göttingen, Göttingen, Germany
| | - D Zilles
- Department of Psychiatry, University Medical Center Göttingen, Göttingen, Germany
- Center for Translational Research in Systems Neuroscience and Psychiatry, Department of Psychiatry and Psychotherapy, Georg August University, Göttingen, Germany
| | - G Donohoe
- Cognitive Genetics and Therapy Group, School of Psychology, National University of Ireland, Galway, Ireland
- Neuropsychiatric Genetics research group, Department of Psychiatry and Trinity College Institute of Psychiatry, Trinity College, Dublin, Ireland
| | - S Kelly
- Imaging Genetics Center, University of Southern California, Los Angeles, CA, USA
- Neuropsychiatric Genetics research group, Department of Psychiatry and Trinity College Institute of Psychiatry, Trinity College, Dublin, Ireland
| | - C McDonald
- Clinical Neuroimaging Laboratory, College of Medicine, Nursing and Health Sciences, National University of Ireland, Galway, Ireland
| | - D W Morris
- Cognitive Genetics and Therapy Group, School of Psychology, National University of Ireland, Galway, Ireland
- Neuropsychiatric Genetics research group, Department of Psychiatry and Trinity College Institute of Psychiatry, Trinity College, Dublin, Ireland
| | - D M Cannon
- Clinical Neuroimaging Laboratory, College of Medicine, Nursing and Health Sciences, National University of Ireland, Galway, Ireland
| | - A Corvin
- Neuropsychiatric Genetics research group, Department of Psychiatry and Trinity College Institute of Psychiatry, Trinity College, Dublin, Ireland
| | - M W J Machielsen
- Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - L Koenders
- Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - L de Haan
- Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - D J Veltman
- University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - T D Satterthwaite
- Department of Psychiatry, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - D H Wolf
- Department of Psychiatry, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - R C Gur
- Department of Psychiatry, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - R E Gur
- Department of Psychiatry, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - S G Potkin
- Department of Psychiatry and Human Behavior, University of California, Irvine, CA, USA
| | - D H Mathalon
- Department of Psychiatry, University of California, San Francisco, CA, USA
- San Francisco Veterans Affairs Medical Center, San Francisco, CA, USA
| | - B A Mueller
- Department of Psychiatry, University of Minnesota, Minneapolis, MN, USA
| | - A Preda
- Department of Psychiatry and Human Behavior, University of California, Irvine, CA, USA
| | - F Macciardi
- Department of Psychiatry and Human Behavior, University of California, Irvine, CA, USA
| | - S Ehrlich
- Translational Developmental Neuroscience Section, Department of Child and Adolescent Psychiatry, Technische Universität, Dresden, Germany
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- MGH/MIT/HMS Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USA
| | - E Walton
- Translational Developmental Neuroscience Section, Department of Child and Adolescent Psychiatry, Technische Universität, Dresden, Germany
| | - J Hass
- Translational Developmental Neuroscience Section, Department of Child and Adolescent Psychiatry, Technische Universität, Dresden, Germany
| | - V D Calhoun
- Mind Research Network, Albuquerque, NM, USA
- Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM, USA
| | - H J Bockholt
- Mind Research Network, Albuquerque, NM, USA
- Advanced Biomedical Informatics Group, LLC, Iowa City, IA, USA
- The University of Iowa, Iowa City, IA, USA
| | - S R Sponheim
- Minneapolis VA Healthcare System & Department of Psychiatry, University of Minnesota, Twin Cities, MN, USA
| | | | - N E M van Haren
- Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands
| | - H E H Pol
- Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands
| | - R A Ophoff
- Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands
- Center for Neurobehavioral Genetics, University of California, Los Angeles, CA, USA
| | - R S Kahn
- Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands
| | - R Roiz-Santiañez
- Department of Psychiatry, University Hospital Marqués de Valdecilla, School of Medicine, University of Cantabria-IDIVAL, Santander, Spain
- CIBERSAM, Centro Investigación Biomédica en Red de Salud Mental, Madrid, Spain
| | - B Crespo-Facorro
- Department of Psychiatry, University Hospital Marqués de Valdecilla, School of Medicine, University of Cantabria-IDIVAL, Santander, Spain
- CIBERSAM, Centro Investigación Biomédica en Red de Salud Mental, Madrid, Spain
| | - L Wang
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Northwestern University, Evanston, IL, USA
- Department of Radiology, Northwestern University Feinberg School of Medicine, Northwestern University, Evanston, IL, USA
| | - K I Alpert
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Northwestern University, Evanston, IL, USA
| | - E G Jönsson
- Norwegian Centre for Mental Disorders Research (NORMENT), KG Jebsen Centre for Psychosis Research, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - R Dimitrova
- Division of Psychiatry, University of Edinburgh Medical School, Edinburgh, UK
| | - C Bois
- Division of Psychiatry, University of Edinburgh Medical School, Edinburgh, UK
| | - H C Whalley
- Division of Psychiatry, University of Edinburgh Medical School, Edinburgh, UK
| | - A M McIntosh
- Division of Psychiatry, University of Edinburgh Medical School, Edinburgh, UK
| | - S M Lawrie
- Division of Psychiatry, University of Edinburgh Medical School, Edinburgh, UK
| | - R Hashimoto
- Molecular Research Center for Children's Mental Development, United Graduate School of Child Development, Osaka University, Osaka, Japan
| | - P M Thompson
- Imaging Genetics Center, University of Southern California, Los Angeles, CA, USA
| | - J A Turner
- Mind Research Network, Albuquerque, NM, USA
- Departments of Psychology and Neuroscience, Georgia State University, Atlanta, GA, USA
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van Erp TGM, Hibar DP, Rasmussen JM, Glahn DC, Pearlson GD, Andreassen OA, Agartz I, Westlye LT, Haukvik UK, Dale AM, Melle I, Hartberg CB, Gruber O, Kraemer B, Zilles D, Donohoe G, Kelly S, McDonald C, Morris DW, Cannon DM, Corvin A, Machielsen MWJ, Koenders L, de Haan L, Veltman DJ, Satterthwaite TD, Wolf DH, Gur RC, Gur RE, Potkin SG, Mathalon DH, Mueller BA, Preda A, Macciardi F, Ehrlich S, Walton E, Hass J, Calhoun VD, Bockholt HJ, Sponheim SR, Shoemaker JM, van Haren NEM, Pol HEH, Ophoff RA, Kahn RS, Roiz-Santiañez R, Crespo-Facorro B, Wang L, Alpert KI, Jönsson EG, Dimitrova R, Bois C, Whalley HC, McIntosh AM, Lawrie SM, Hashimoto R, Thompson PM. Subcortical brain volume abnormalities in 2028 individuals with schizophrenia and 2540 healthy controls via the ENIGMA consortium. Mol Psychiatry 2016; 21:585. [PMID: 26283641 PMCID: PMC5751698 DOI: 10.1038/mp.2015.118] [Citation(s) in RCA: 181] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kraemer B, Schumacher S, Winkel B, Imboden C, Wittmann L. The “building block” effect of prior trauma for psychological outcome in victims of a natural disaster. Eur Psychiatry 2016. [DOI: 10.1016/j.eurpsy.2016.01.520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
BackgroundWith increasing numbers of previous traumatic experiences, a rising risk of psychiatric morbidity and in particular post-traumatic stress disorder following an acute trauma has been reported. This dose-effect relationship was called the building block effect. Most results are derived from studies on riot and prosecution victims. We investigated victims of a natural disaster with respect to the building block effect due to prior traumatization.MethodsWe assessed tourists who had been affected by the Indian Ocean Tsunami 2004 using the Post-traumatic Diagnostic Scale, the Hospital Anxiety and Depression Scale, and the Post-traumatic Growth Inventory. Outcome variables were related to the numbers or prior civil trauma according to the trauma history scale of the PDS.ResultsWe found a building block effect for the development of anxiety (P = 0.018) and by trend with PTSD symptoms (P = 0.06), but not with depressive symptoms (P = 0.436). Prior traumatization and the actual Tsunami exposure significantly explained variance of personal posttraumatic growth (P = 0.013). Prior interpersonal traumata emerged as a strong risk factor for the development of posttraumatic psychiatric morbidity.ConclusionsWe suggest that an increasing number of trauma is closely associated with anxiety but not with depressive disorders in the aftermath of natural disasters. For clinical practice, it is necessary to ask victims of natural disasters about prior traumatization, in particular about prior interpersonal trauma.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Affiliation(s)
- Elaine R Peskind
- Veterans Affairs Northwest Network Mental Illness Research, Education, and Clinical Center, Seattle, Washington2Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, Seattle
| | - Brian Kraemer
- Geriatric Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, Washington4Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle
| | - Jing Zhang
- Department of Pathology, University of Washington School of Medicine, Seattle
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Kraemer B, Hilti L, Hänggi J, Brugger P. The Desire for Healthy Limb Amputation: Psychiatric Features of Xenomelia. Eur Psychiatry 2015. [DOI: 10.1016/s0924-9338(15)31950-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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18
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Trew G, Pistofidis G, Ziegler N, Korrell M, Brucker S, Ritter H, Kraemer B, Diamond M, de Wilde R. A First-in-Human, Randomized, Controlled, Subject- and Reviewer-Blinded Study of a Degradable Hydrogel Adhesion Barrier Spray Applied Laparoscopically to All Sites of Surgical Trauma Following Gynecologic Laparoscopic Surgery. J Minim Invasive Gynecol 2014. [DOI: 10.1016/j.jmig.2014.08.314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Meyer K, Zientek N, Maiwald M, Kraemer B, Esche E, Müller D, Wozny G. Eine robuste Prozessanalytik für die CO 2-Abtrennung industrieller Gasströme basierend auf Online-NMR- und -Raman-Spektroskopie. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Yu CE, Cudaback E, Foraker J, Thomson Z, Leong L, Lutz F, Gill JA, Saxton A, Kraemer B, Navas P, Keene CD, Montine T, Bekris LM. Epigenetic signature and enhancer activity of the human APOE gene. Hum Mol Genet 2013; 22:5036-47. [PMID: 23892237 DOI: 10.1093/hmg/ddt354] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The human apolipoprotein E (APOE) gene plays an important role in lipid metabolism. It has three common genetic variants, alleles ε2/ε3/ε4, which translate into three protein isoforms of apoE2, E3 and E4. These isoforms can differentially influence total serum cholesterol levels; therefore, APOE has been linked with cardiovascular disease. Additionally, its ε4 allele is strongly associated with the risk of Alzheimer's disease (AD), whereas the ε2 allele appears to have a modest protective effect for AD. Despite decades of research having illuminated multiple functional differences among the three apoE isoforms, the precise mechanisms through which different APOE alleles modify diseases risk remain incompletely understood. In this study, we examined the genomic structure of APOE in search for properties that may contribute novel biological consequences to the risk of disease. We identify one such element in the ε2/ε3/ε4 allele-carrying 3'-exon of APOE. We show that this exon is imbedded in a well-defined CpG island (CGI) that is highly methylated in the human postmortem brain. We demonstrate that this APOE CGI exhibits transcriptional enhancer/silencer activity. We provide evidence that this APOE CGI differentially modulates expression of genes at the APOE locus in a cell type-, DNA methylation- and ε2/ε3/ε4 allele-specific manner. These findings implicate a novel functional role for a 3'-exon CGI and support a modified mechanism of action for APOE in disease risk, involving not only the protein isoforms but also an epigenetically regulated transcriptional program at the APOE locus driven by the APOE CGI.
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Affiliation(s)
- Chang-En Yu
- Geriatric Research, Education, and Clinical Center, VA Puget Sound Health Care System, Seattle, WA 98108, USA
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Anisimov VN, Bartke A, Barzilai N, Batin MA, Blagosklonny MV, Brown-Borg H, Budovskaya Y, Campisi J, Friguet B, Fraifeld V, Franceschi C, Gems D, Gladyshev V, Gorbunova V, Gudkov AV, Kennedy B, Konovalenko M, Kraemer B, Moskalev A, Petropoulos I, Pasyukova E, Rattan S, Rogina B, Seluanov A, Shaposhnikov M, Shmookler Reis R, Tavernarakis N, Vijg J, Yashin A, Zimniak P. The second international conference "genetics of aging and longevity". Aging (Albany NY) 2012; 4:305-17. [PMID: 22661237 PMCID: PMC5533612 DOI: 10.18632/aging.100458] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kraemer B, Guthrie C, Wheeler J. O1‐07‐04: Identifying protective strategies against tau neurotoxicity. Alzheimers Dement 2012. [DOI: 10.1016/j.jalz.2012.05.242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Brian Kraemer
- University of WashingtonSeattleWashingtonUnited States
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Kraemer B, Rothmund R, Banys M, Krawczyk N, Solomayer EF, Mack C, Wallwiener D, Fehm T. Impaired bone microenvironment: correlation between bone density and presence of disseminated tumor cells. Anticancer Res 2011; 31:4423-4428. [PMID: 22199310] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
BACKGROUND Disseminated tumor cells (DTCs) in bone marrow (BM) occur in 30-40% of primary breast cancer patients. An impaired bone microenvironment may lead to reduced bone density and osteoporosis affecting the BM as a homing site for DTCs. The bone mineral density (BMD) and its correlation to DTC in BM was evaluated. MATERIALS AND METHODS One hundred and eighty-one women (70 premenopausal, 111 postmenopausal) underwent quantitative ultrasonometry before adjuvant chemotherapy. BM aspirates were analyzed by immunocytochemistry using the ACIS system (Chromavision) based on immunostaining. RESULTS DTCs were detected in 39% of the patients. Positive BM status correlated significantly with the nodal status. BMD was significantly reduced in the postmenopausal patients (p=0.003). Smaller tumors and higher BMD correlated significantly (p<0.014). Fifty percent of the patients with preclinical osteoporosis were BM positive, whereas 37% with normal or osteopenic BMD had DTCs. CONCLUSION An impaired bone micro-environment as found in preclinical osteoporosis might be a homing site for DTCs.
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Affiliation(s)
- B Kraemer
- Department of Obstetrics and Gynecology, University of Tuebingen, Calwerstrasse 7, 72076 Tuebingen, Germany
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Becker S, Wallwiener D, Brucker S, Rothmund R, Kraemer B, Fehm T. Complications in Laparoscopic Gynecologic Oncology. J Minim Invasive Gynecol 2011. [DOI: 10.1016/j.jmig.2011.08.370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wallwiener M, Taran FA, Rothmund R, Rall K, Kraemer B, Abele H, Schoenfisch B, Brucker SY. Laparoscopic subtotal hysterectomy versus laparoscopic total hysterectomy – a retrospective study of 2082 cases. Geburtshilfe Frauenheilkd 2011. [DOI: 10.1055/s-0031-1286403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Kraemer B, Guthrie C, Leverenz J. P1‐150: Tau neurotoxicity and MSUT2. Alzheimers Dement 2010. [DOI: 10.1016/j.jalz.2010.05.699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Brian Kraemer
- Seattle Veterans Affairs Puget Sound Health Care SystemSeattle WA USA
- University of WashingtonSeattle WA USA
| | - Chris Guthrie
- Seattle Veterans Affairs Puget Sound Health Care SystemSeattle WA USA
| | - James Leverenz
- Seattle Veterans Affairs Puget Sound Health Care SystemSeattle WA USA
- University of WashingtonSeattle WA USA
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Rajab TK, Wauschkuhn CA, Smaxwil L, Kraemer B, Wallwiener M, Wallwiener CW. An Improved Model for the Induction of Experimental Adhesions. J INVEST SURG 2010; 23:35-9. [DOI: 10.3109/08941930903469474] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Wallwiener C, Isaacson K, Rajab T, Kraemer B, Wallwiener M. Quantifying Electro Surgery-Induced Thermal Effects and Damage to Human Tissue: An Exploratory Study Using the Fallopian Tube as a Novel In-Vivo In-Situ Model. J Minim Invasive Gynecol 2009. [DOI: 10.1016/j.jmig.2009.08.204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Wallwiener M, Rajab T, Kraemer B, Hartkopf A, Wallwiener C. P604 Patients' awareness of post-operative adhesions: results from a multi-centre study and online survey. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)62094-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kraemer B, Guengoer E, Solomayer EF, Wallwiener D, Hornung R. Stage I carcinoma of the Bartholin's gland managed with the detection of inguinal and pelvic sentinel lymph node. Gynecol Oncol 2009; 114:373-4. [PMID: 19428095 DOI: 10.1016/j.ygyno.2009.04.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2009] [Revised: 04/11/2009] [Accepted: 04/15/2009] [Indexed: 10/20/2022]
Abstract
BACKGROUND Primary carcinoma of the Bartholin's gland is rare, consequently standard management is not clear. Although the sentinel concept has gained popularity for other malignancies of the female reproductive tract, the literature lacks reports of this approach for carcinomas of the Bartholin's gland. CASE We present a patient with stage I adenocarcinoma of the Bartholin's gland. She was managed with wide excision and inguinal and laparoscopic pelvic sentinel lymphadenectomy followed by complete pelvic lymphadenectomy. We discuss the rationale for the sentinel concept. CONCLUSION As for other gynaecological malignancies the sentinel lymphadenectomy seems to be an appropriate and feasible surgical approach for early stage carcinomas of the Bartholin's gland.
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Affiliation(s)
- B Kraemer
- University Hospital for Women, Calwerstrasse 7, D-72076 Tuebingen, Germany.
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Wallwiener C, Kraemer B, Wallwiener M, Rajab T. The Extent of Adhesion Induction through Electrocoagulation in a Rat Model. J Minim Invasive Gynecol 2008. [DOI: 10.1016/j.jmig.2008.09.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kraemer B, Wallwiener M, Planck C, Wallwiener C, Rajab T. Comparison of Liquid and Solid Adhesion Barriers in a Rat Model. J Minim Invasive Gynecol 2008. [DOI: 10.1016/j.jmig.2008.09.524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Jenewein J, Moergeli H, Fauchère JC, Bucher HU, Kraemer B, Wittmann L, Schnyder U, Büchi S. Parents' mental health after the birth of an extremely preterm child: a comparison between bereaved and non-bereaved parents. J Psychosom Obstet Gynaecol 2008; 29:53-60. [PMID: 18266165 DOI: 10.1080/01674820701640181] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
OBJECTIVE To assess the impact of extremely preterm birth (24-26 weeks of gestation) on the mental health of parents two to six years after delivery, and to examine potential differences in post-traumatic growth between parents whose newborn infant died and those whose child survived. METHOD A total of 54 parents who had lost their newborn and 38 parents whose preterm child survived were assessed by questionnaires with regard to depression and anxiety (HADS) and post-traumatic growth (PTGI). RESULTS Neither group of parents had clinically relevant levels of depression and anxiety. Mothers showed higher levels of anxiety than fathers. Bereaved parents with no other, living child reported higher levels of depression than bereaved parents with one or more children. Mothers reported higher post-traumatic growth compared to fathers. In particular, bereaved mothers experienced the value and quality of their close social relationships more positively compared to the non-bereaved parents. CONCLUSION In the long term, bereaved and non-bereaved parents cope reasonably well with an extremely preterm birth of a child. Post-traumatic growth appears to be positively related to bereavement, particularly in mothers.
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Affiliation(s)
- J Jenewein
- Department of Psychiatry, University Hospital, Zurich, Switzerland.
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Rajab T, Wallwiener D, Planck H, Kraemer B, Fletcher N. 236: Adhesion Prophylaxis Using a Novel Resorbable Biomembrane Consisting of D,L-Polylactid (Supraseal) - Experimental Results in the Rat Model. J Minim Invasive Gynecol 2007. [DOI: 10.1016/j.jmig.2007.08.178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Rajab T, Kraemer B, Wallwiener C, Wallwiener M, Planck H, Wallwiener D, Hubeaux K. 235: Adhesion Prophylaxis After Laparoscopic Myomectomy using a Novel Resorbable Membrane Consisting of D,L-Polylactid (Supraseal). J Minim Invasive Gynecol 2007. [DOI: 10.1016/j.jmig.2007.08.177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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MacMorris M, Kumar M, Lasda E, Larsen A, Kraemer B, Blumenthal T. A novel family of C. elegans snRNPs contains proteins associated with trans-splicing. RNA 2007; 13:511-20. [PMID: 17283210 PMCID: PMC1831854 DOI: 10.1261/rna.426707] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [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: 12/05/2006] [Accepted: 01/02/2007] [Indexed: 05/13/2023]
Abstract
In many Caenorhabditis elegans pre-mRNAs, the RNA sequence between the 5' cap and the first 3' splice site is replaced by trans-splicing a short spliced leader (SL) from the Sm snRNP, SL1. C. elegans also utilizes a similar Sm snRNP, SL2, to trans-splice at sites between genes in polycistronic pre-mRNAs from operons. How do SL1 and SL2 snRNPs function in different contexts? Here we show that the SL1 snRNP contains a complex of SL75p and SL21p, which are homologs of novel proteins previously reported in the Ascaris SL snRNP. Interestingly, we show that the SL2 snRNP does not contain these proteins. However, SL75p and SL26p, a paralog of SL21p, are components of another Sm snRNP that contains a novel snRNA species, Sm Y. Knockdown of SL75p is lethal. However, knockdown of either SL21p or SL26p alone leads to cold-sensitive sterility, whereas knockdown of both SL21p and SL26p is lethal. This suggests that these two proteins have overlapping functions even though they are associated with different classes of snRNP. These phenotypic relationships, along with the association of SL26p with SL75p, imply that, like the SL1 RNA/Sm/SL75p/SL21p complex, the Sm Y/Sm/SL75p/SL26p complex is associated with trans-splicing.
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MESH Headings
- Alternative Splicing
- Amino Acid Sequence
- Animals
- Caenorhabditis elegans/genetics
- Genes, Helminth
- Molecular Sequence Data
- Operon
- RNA Splicing
- RNA, Helminth/chemistry
- RNA, Helminth/genetics
- RNA, Helminth/metabolism
- RNA, Spliced Leader/metabolism
- RNA-Binding Proteins/chemistry
- RNA-Binding Proteins/metabolism
- Ribonucleoproteins, Small Nuclear/chemistry
- Ribonucleoproteins, Small Nuclear/classification
- Ribonucleoproteins, Small Nuclear/genetics
- Ribonucleoproteins, Small Nuclear/metabolism
- Sequence Homology, Amino Acid
- Trans-Splicing
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Affiliation(s)
- Margaret MacMorris
- Department of Biochemistry and Molecular Genetics, University of Colorado School of Medicine, Aurora, CO 80045, USA
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Abstract
OBJECTIVE The aim of the study was to assess the frequency of co-morbid post-traumatic stress disorders (PTSD) in women with eating disorders (ED). METHOD 277 women aged 17 to 50 with a current DSM-IV ED were included. 84 were diagnosed with anorexia nervosa (AN), 152 with bulimia nervosa (BN) and 41 with ED not otherwise specified (EDNOS). Structured Clinical Interviews (SCID-I and SCID-II) were performed. RESULTS Sixty-eight participants (24.5%) reported unwanted sexual experiences (USE). Fifty-two participants (18.8%) reported some form of childhood sexual abuse (CSA). Four participants (1.4%) met the criteria for PTSD according to the Diagnostic and Statistical Manual-IV (DSM-IV). Participants with a history of USE did not differ from those without USE with regard to ED diagnosis, but were diagnosed more often with any Axis I or Axis II disorder. CONCLUSIONS The prevalence of PTSD in this sample of women with ED was low (1.4%), despite a USE rate of 24.5%.
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Affiliation(s)
- U Hepp
- Psychiatrische Dienste Aargau AG, Baden, Switzerland.
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Holler E, Krueger B, Rogler G, Brenmoehl J, Dickinson A, Greinix H, Wolff D, Finke J, Hahn J, Kraemer B, Andreesen R. 299: The role of SNPs within receptors of innate immunity in outcome following allogeneic stem cell transplantation. Biol Blood Marrow Transplant 2007. [DOI: 10.1016/j.bbmt.2006.12.304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kraemer B, Schellenberg GD. Using Caenorhabditis elegans models of neurodegenerative disease to identify neuroprotective strategies. Int Rev Neurobiol 2007; 77:219-46. [PMID: 17178476 DOI: 10.1016/s0074-7742(06)77007-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Brian Kraemer
- Geriatric Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle Division, Seattle, Washington 98108, USA
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Kraemer B, Solomayer EF, Becker S, Schauf B, Fehm T, Wallwiener D, Kraemer E, Meyberg G. Placenta Percreta with Infiltration of the Pelvic Wall and Urinary Bladder - an Obstetrical Emergency. Geburtshilfe Frauenheilkd 2006. [DOI: 10.1055/s-2006-923990] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Kraemer B, Mack C, Kraemer E, Huober J, Fehm T, Wallwiener D, Solomayer E. Bone mass in patients with primary breast cancer: Measurements of the calcaneus by ultrasonometry. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
| | - C. Mack
- Univ Hosp for Women, Tuebingen, Germany
| | | | - J. Huober
- Univ Hosp for Women, Tuebingen, Germany
| | - T. Fehm
- Univ Hosp for Women, Tuebingen, Germany
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Abstract
OBJECTIVE Despite being recognized as an important prognostic factor for the outcome in gender identity disorder (GID), psychiatric comorbidity has rarely been assessed by means of standardized diagnostic instruments. The aim of this study was to assess current and lifetime psychiatric comorbidity in patients with GID. METHODS A cross-sectional sample of 31 patients who were treated for GID was assessed by the structured clinical interview for Axis I and II (SCID-I/II) and the Hospital Anxiety and Depression Scale (HADS). RESULTS Twenty-nine percent of the patients had no current or lifetime Axis I disorder; 39% fulfilled the criteria for current and 71% for current and/or lifetime Axis I diagnosis. Forty-two percent of the patients were diagnosed with one or more personality disorders. CONCLUSIONS Lifetime psychiatric comorbidity in GID patients is high, and this should be taken into account in the assessment and treatment planning of GID patients.
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Affiliation(s)
- U Hepp
- Department of Psychiatry, University Hospital, Culmannstrasse 8, Zurich CH-8091, Switzerland.
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Meyberg-Solomayer GC, Kraemer B, Bergmann A, Kraemer E, Krainick U, Wallwiener D, Solomayer EF. Does 3-D sonography bring any advantage to noninvasive breast diagnostics? Ultrasound Med Biol 2004; 30:583-589. [PMID: 15183222 DOI: 10.1016/j.ultrasmedbio.2004.03.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2003] [Revised: 02/23/2004] [Accepted: 03/05/2004] [Indexed: 05/24/2023]
Abstract
The aim of this prospective trial was to evaluate if 3-D ultrasound (US) brings any advantage to breast diagnostics. A total of 65 women with breast lesions (42 malignant, 23 benign) were examined preoperatively with 2-D and 3-D US. The impact of the use of the 3-D coronal plane for the visualization of the infiltrative zone in comparison to 2-D US was evaluated. Additionally, 3-D surface imaging and volumetry were performed. The coronal plane was of benefit when the infiltrative zone was unclear (6 of 8 cases) or not visible (17 of 39 cases; 43.6%) using 2-D imaging. The surface mode was advantageous for imaging complex structures (e.g., a multinodular fibroadenoma). Volumetry yielded a highly significant correlation between 2-D and 3-D US. 3-D US of breast lesions as adjunct to 2-D sonography can offer a better assessment of the infiltrative zone. Moreover, it enables accurate documentation of data.
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Affiliation(s)
- G C Meyberg-Solomayer
- Department of Gynaecology and Obstetrics, University of Tuebingen, Tuebingen, Germany
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Abstract
Our hypothesis is that peripheral somatostatin (SRIF) has a role in counter-irritation-induced analgesia. Our paradigm involves the reduction of nociceptive behaviors produced by primary noxious stimuli (formalin or complete Freund's adjuvant [CFA] in the rat hind paw) by a counter-irritating stimulus (capsaicin [CAP] in the tail or muzzle). Activation of peripheral SRIF receptors is key since an SRIF receptor antagonist cyclo-somatostatin (c-SOM) and SRIF antibodies in the hind paw attenuate the counter-irritation-induced analgesia of both formalin and more persistent CFA nociception. Specificity of c-SOM is shown by reversal of its effects with octreotide, a SRIF analog. Injection of formalin in one hind paw and c-SOM in the other does not reduce the counter-irritation analgesia demonstrating local action of the c-SOM. Approximately 33% of peripheral sensory axons contain SRIF, which could release the peptide to activate SRIF receptors on cutaneous axons. Intraplantar naloxone has no effect on the counter-irritation analgesia indicating that SRIF is not activating opioid receptors. These results indicate that in addition to the classic central descending noxious inhibitory control systems that underlie counter-irritation-induced analgesia, there is a peripheral contribution arising from activation of SRIF receptors. Identifying a peripheral contribution of SRIF to mechanisms of counter-irritation analgesia offers opportunities for peripheral therapy.
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Affiliation(s)
- S M Carlton
- Department of Anatomy and Neurosciences, Marine Biomedical Institute, 301 University Boulevard, University of Texas Medical Branch, Galveston, TX 77555-1069, USA.
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Abstract
The FBF RNA binding proteins control multiple aspects of C. elegans germline development, including sex determination. FBF promotes the oocyte fate at the expense of spermatogenesis by binding a regulatory element in the fem-3 3'UTR and repressing this sex-determining gene. Here we report the discovery of GLD-3, a Bicaudal-C homolog and cytoplasmic protein that physically interacts with FBF. Using RNAi and a gld-3 deletion mutant, we show that GLD-3 promotes the sperm fate, a sex determination effect opposite to that of FBF. By epistasis analysis, GLD-3 acts upstream of FBF, and, in a yeast three-hybrid assay, GLD-3 interferes specifically with FBF binding to the fem-3 3'UTR. We propose that GLD-3 binds FBF and thereby inhibits its repression of target mRNAs.
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Affiliation(s)
- Christian R Eckmann
- Howard Hughes Medical Institute, 433 Babcock Drive, University of Wisconsin-Madison, Madison, WI 53706, USA
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Affiliation(s)
- B Kraemer
- Department of Biochemistry, University of Wisconsin, Madison 53706, USA
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Affiliation(s)
- B Zhang
- Department of Biochemistry, University of Wisconsin, Madison 53706, USA
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Abstract
Cytoplasmic polyadenylation element binding (CPEB) proteins bind to and regulate the translation of specific mRNAs. CPEBs from Xenopus, Drosophila, and Spisula participate in oogenesis. In this report, we examine the biological roles of all identifiable CPEB homologs in a single organism, Caenorhabditis elegans. We find four homologs in the C. elegans genome: cbp-1, cpb-2, cpb-3, and fog-1. Surprisingly, two homologs, CPB-1 and FOG-1, have key functions in spermatogenesis and are dispensable for oogenesis. CPB-2 and CPB-3 also appear not to be required for oogenesis. CPB-1 is essential for progression through meiosis: cpb-1(RNAi) spermatocytes fail to undergo the meiotic cell divisions. CPB-1 protein is present in the germ line just prior to overt spermatogenesis; once sperm differentiation begins, CPB-1 disappears. CPB-1 physically interacts with FBF, another RNA-binding protein and 3' UTR regulator. In addition to its role in controlling the sperm/oocyte switch, we find that FBF also appears to be required for spermatogenesis, consistent with its interaction with CPEB. A second CPEB homolog, FOG-1, is required for specification of the sperm fate. The fog-1 gene produces fog-1(L) and fog-1(S) transcripts. The fog-1(L) RNA is enriched in animals making sperm and is predicted to encode a larger protein; fog-1(S) RNA is enriched in animals making oocytes and is predicted to encode a smaller protein. The relative abundance of the two mRNAs is controlled temporally during germ-line development and by the sex determination pathway in a fashion that suggests that the fog-1(L) species encodes the active form. In sum, our results demonstrate that, in C. elegans, two CPEB proteins have distinct functions in the germ line, both in spermatogenesis: FOG-1 specifies the sperm cell fate and CPB-1 executes that decision.
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Affiliation(s)
- C Luitjens
- Program in Cell and Molecular Biology, University of Wisconsin, Madison, Wisconsin 53706, USA
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Kraemer B, Crittenden S, Gallegos M, Moulder G, Barstead R, Kimble J, Wickens M. NANOS-3 and FBF proteins physically interact to control the sperm-oocyte switch in Caenorhabditis elegans. Curr Biol 1999; 9:1009-18. [PMID: 10508609 DOI: 10.1016/s0960-9822(99)80449-7] [Citation(s) in RCA: 222] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND The Caenorhabditis elegans FBF protein and its Drosophila relative, Pumilio, define a large family of eukaryotic RNA-binding proteins. By binding regulatory elements in the 3' untranslated regions (UTRs) of their cognate RNAs, FBF and Pumilio have key post-transcriptional roles in early developmental decisions. In C. elegans, FBF is required for repression of fem-3 mRNA to achieve the hermaphrodite switch from spermatogenesis to oogenesis. RESULTS We report here that FBF and NANOS-3 (NOS-3), one of three C. elegans Nanos homologs, interact with each other in both yeast two-hybrid and in vitro assays. We have delineated the portions of each protein required for this interaction. Worms lacking nanos function were derived either by RNA-mediated interference (nos-1 and nos-2) or by use of a deletion mutant (nos-3). The roles of the three nos genes overlap during germ-line development. In certain nos-deficient animals, the hermaphrodite sperm-oocyte switch was defective, leading to the production of excess sperm and no oocytes. In other nos-deficient animals, the entire germ line died during larval development. This germ-line death did not require CED-3, a protease required for apoptosis. CONCLUSIONS The data suggest that NOS-3 participates in the sperm-oocyte switch through its physical interaction with FBF, forming a regulatory complex that controls fem-3 mRNA. NOS-1 and NOS-2 also function in the switch, but do not interact directly with FBF. The three C. elegans nanos genes, like Drosophila nanos, are also critical for germ-line survival. We propose that this may have been the primitive function of nanos genes.
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Affiliation(s)
- B Kraemer
- Department of Biochemistry University of Wisconsin-Madison Madison, Wisconsin 53706, USA
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