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https://www.readbyqxmd.com/read/28331883/practical-no-gold-standard-evaluation-framework-for-quantitative-imaging-methods-application-to-lesion-segmentation-in-positron-emission-tomography
#1
Abhinav K Jha, Esther Mena, Brian Caffo, Saeed Ashrafinia, Arman Rahmim, Eric Frey, Rathan M Subramaniam
Recently, a class of no-gold-standard (NGS) techniques have been proposed to evaluate quantitative imaging methods using patient data. These techniques provide figures of merit (FoMs) quantifying the precision of the estimated quantitative value without requiring repeated measurements and without requiring a gold standard. However, applying these techniques to patient data presents several practical difficulties including assessing the underlying assumptions, accounting for patient-sampling-related uncertainty, and assessing the reliability of the estimated FoMs...
January 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/28331359/pregnancy-suppresses-neuropathic-pain-induced-by-chronic-constriction-injury-in-rats-through-the-inhibition-of-tnf-%C3%AE
#2
Yoshiko Onodera, Megumi Kanao-Kanda, Hirotsugu Kanda, Tomoki Sasakawa, Hiroshi Iwasaki, Takayuki Kunisawa
PURPOSE: Pregnancy-induced analgesia develops during late pregnancy, but it is unclear whether this analgesia is effective against neuropathic pain. The detailed molecular mechanisms underlying pregnancy-induced analgesia have not been investigated. We examined the antinociceptive effect of pregnancy-induced analgesia in a neuropathic pain model and the expression of tumor necrosis factor (TNF)-α, glial fibrillary acidic protein (GFAP), Iba-1, and c-Fos in the spinal dorsal horn just before parturition...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28326933/attenuation-of-hyperalgesia-responses-via-the-modulation-of-5-hydroxytryptamine-signalings-in-the-rostral-ventromedial-medulla-and-spinal-cord-in-a-6-hydroxydopamine-induced-rat-model-of-parkinson-s-disease
#3
Chen-Tao Wang, Cheng-Jie Mao, Xiao-Qi Zhang, Cai-Yi Zhang, Dong-Jun Lv, Ya-Ping Yang, Kai-Lin Xia, Jun-Yi Liu, Fen Wang, Li-Fang Hu, Guang-Yin Xu, Chun-Feng Liu
Background Although pain is one of the most distressing non-motor symptoms among patients with Parkinson's disease, the underlying mechanisms of pain in Parkinson's disease remain elusive. The aim of the present study was to investigate the role of serotonin (5-hydroxytryptamine) in the rostral ventromedial medulla (RVM) and spinal cord in pain sensory abnormalities in a 6-hydroxydopamine-treated rat model of Parkinson's disease. Methods The rotarod test was used to evaluate motor function. The radiant heat test and von Frey test were conducted to evaluate thermal and mechanical pain thresholds, respectively...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28326928/cxcr4-signaling-in-macrophages-contributes-to-periodontal-mechanical-hypersensitivity-in-porphyromonas-gingivalis-induced-periodontitis-in-mice
#4
Hidekazu Nagashima, Masamichi Shinoda, Kuniya Honda, Noriaki Kamio, Masahiro Watanabe, Tatsuro Suzuki, Naoyuki Sugano, Shuichi Sato, Koichi Iwata
Background Periodontitis is an inflammatory disease accompanied by alveolar bone loss and progressive inflammation without pain. However, the potential contributors eliminating pain associated with gingival inflammation are unknown. Results we examined the involvement of CXC chemokine receptor type 4 (CXCR4) on the mechanical sensitivity of inflamed periodontal tissue, using a mouse model of periodontitis established by the ligation of the tooth cervix of a maxillary second molar and inoculation with Porphyromonas gingivalis (P...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28325588/operative-management-of-chronic-pancreatitis-a-review
#5
REVIEW
John D Tillou, Jacob A Tatum, Joshua S Jolissaint, Daniel S Strand, Andrew Y Wang, Victor Zaydfudim, Reid B Adams, Kenneth L Brayman
BACKGROUND: Pain secondary to chronic pancreatitis is a difficult clinical problem to manage. Many patients are treated medically or undergo endoscopic therapy and surgical intervention is often reserved for those who have failed to gain adequate pain relief from a more conservative approach. RESULTS: There have been a number of advances in the operative management of chronic pancreatitis over the last few decades and current therapies include drainage procedures (pancreaticojejunostomy, etc...
March 14, 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28324704/bxd-recombinant-inbred-strains-participate-in-social-preference-anxiety-and-depression-behaviors-along-sex-differences-in-cytokines-and-tactile-allodynia
#6
Caridad López-Granero, Alessandra Antunes Dos Santos, Beatriz Ferrer, Megan Culbreth, Sudipta Chakraborty, Angel Barrasa, Maria Gulinello, Aaron B Bowman, Michael Aschner
Depression and anxiety are the most common psychiatric disorders, representing a major public health concern. Dysregulation of oxidative and inflammatory systems may be associated with psychiatric disorders, such as depression and anxiety. Due to the need to find appropriate animal models to the understanding of such disorders, we queried whether 2 BXD recombinant inbred (RI) mice strains (BXD21/TyJ RI and BXD84/RwwJ RI mice) and C57BL/6 wild-type mice show differential performance in depression and anxiety related behaviors and biomarkers...
March 6, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28324193/hemodynamic-characterization-of-peripheral-arterio-venous-malformations
#7
Sabrina Frey, A Haine, R Kammer, H von Tengg-Kobligk, D Obrist, I Baumgartner
Peripheral arterio-venous malformations (pAVMs) are congenital vascular anomalies that require treatment, due to their severe clinical consequences. The complexity of lesions often leads to misdiagnosis and ill-planned treatments. To improve disease management, we developed a computational model to quantify the hemodynamic effects of key angioarchitectural features of pAVMs. Hemodynamic results were used to predict the transport of contrast agent (CA), which allowed us to compare our findings to digital subtraction angiography (DSA) recordings of patients...
March 21, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28323807/the-trauma-collaborative-care-study-tccs
#8
Stephen T Wegener, Andrew N Pollak, Katherine P Frey, Robert A Hymes, Kristin R Archer, Clifford B Jones, Rachel B Seymour, Robert V OʼToole, Renan C Castillo, Yanjie Huang, Daniel O Scharfstein, Ellen J MacKenzie
Previous research suggests that the care provided to trauma patients could be improved by including early screening and management of emotional distress and psychological comorbidity. The Trauma Collaborative Care (TCC) program, which is based on the principles of well-established models of collaborative care, was designed to address this gap in trauma center care. This article describes the TCC program and the design of a multicenter study to evaluate its effectiveness for improving patient outcomes after major, high-energy orthopaedic trauma at level 1 trauma centers...
April 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28323806/improving-pain-management-and-long-term-outcomes-following-high-energy-orthopaedic-trauma-pain-study
#9
Renan C Castillo, Srinivasa N Raja, Katherine P Frey, Heather A Vallier, Paul Tornetta, Todd Jaeblon, Brandon J Goff, Allan Gottschalk, Daniel O Scharfstein, Robert V OʼToole
Poor pain control after orthopaedic trauma is a predictor of physical disability and numerous negative long-term outcomes. Despite increased awareness of the negative consequences of poorly controlled pain, analgesic therapy among hospitalized patients after orthopaedic trauma remains inconsistent and often inadequate. The Pain study is a 3 armed, prospective, double-blind, multicenter randomized trial designed to evaluate the effect of standard pain management versus standard pain management plus perioperative nonsteroidal anti-inflammatory drugs or pregabalin in patients of ages 18-85 with extremity fractures...
April 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28323801/predicting-acute-compartment-syndrome-pacs-the-role-of-continuous-monitoring
#10
Andrew H Schmidt, Michael J Bosse, Katherine P Frey, Robert V OʼToole, Daniel J Stinner, Daniel O Scharfstein, Vadim Zipunnikov, Ellen J MacKenzie
The diagnosis of acute compartment syndrome (ACS) is a common clinical challenge among patients who sustain high-energy orthopaedic trauma, largely because no validated criteria exist to reliably define the presence of the condition. In the absence of validated diagnostic standards, concern for the potential clinical and medicolegal impact of a missed compartment syndrome may result in the potential overuse of fasciotomy in "at-risk" patients. The goal of the Predicting Acute Compartment Syndrome Study was to develop a decision rule for predicting the likelihood of ACS that would reduce unnecessary fasciotomies while guarding against potentially missed ACS...
April 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28319550/continuous-transversus-abdominis-plane-nerve-blocks-does-varying-local-anesthetic-delivery-method-automatic-repeated-bolus-versus-continuous-basal-infusion-influence-the-extent-of-sensation-to-cold-a-randomized-triple-masked-crossover-study-in-volunteers
#11
Bahareh Khatibi, Engy T Said, Jacklynn F Sztain, Amanda M Monahan, Rodney A Gabriel, Timothy J Furnish, Johnathan T Tran, Michael C Donohue, Brian M Ilfeld
BACKGROUND: It remains unknown whether continuous or scheduled intermittent bolus local anesthetic administration is preferable for transversus abdominis plane (TAP) catheters. We therefore tested the hypothesis that when using TAP catheters, providing local anesthetic in repeated bolus doses increases the cephalad-caudad cutaneous effects compared with a basal-only infusion. METHODS: Bilateral TAP catheters (posterior approach) were inserted in 24 healthy volunteers followed by ropivacaine 2 mg/mL administration for a total of 6 hours...
April 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28319527/hydrocodone-but-neither-morphine-nor-oxycodone-is-effective-in-suppressing-burn-induced-mechanical-allodynia-in-the-uninjured-foot-contralateral-to-the-burn
#12
Michael A Emery, M L Shawn Bates, Paul J Wellman, Shoshana Eitan
Opioids are commonly used to treat severe, burn-induced pain. However, there is a lack of rodent studies that examine the differential effects of various opioids on burn pain. The authors recently demonstrated that hydrocodone was superior to other opioids in suppressing the development of burn-induced mechanical allodynia in the burned limb. This study monitored the development of mechanical allodynia and compared the abilities of morphine, oxycodone, and hydrocodone to reduce burn-induced mechanical allodynia in the limb contralateral to the burn...
March 13, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28319517/effects-of-a-lidocaine-loaded-poloxamer-alginate-cacl2-mixture-on-postoperative-pain-and-adhesion-in-a-rat-model-of-incisional-pain
#13
Geun Joo Choi, Hyun Kang, Min Eui Hong, Hwa Yong Shin, Chong Wha Baek, Yong Hun Jung, Younsuk Lee, Jeong Wook Kim, I L Kyu Park, Wan Jin Cho
BACKGROUND: Pain and adhesion are problematic issues after surgery. Lidocaine has analgesics and anti-inflammatory properties, and poloxamer/alginate/CaCl2 (PACM) is a known antiadhesive agent. We hypothesized that the novel combination of lidocaine as chemical barrier and PACM as physical barrier would be beneficial for both postoperative pain and adhesion. The purpose of this study was to investigate the effects of lidocaine-loaded PACM in a rat model of incisional pain. Primary outcome was to evaluate between-group differences for the mechanical withdrawal threshold (MWT) measured by von Frey filament in various concentrations of lidocaine-loaded PACM applied, PACM applied, and sham-operated groups...
March 17, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28319338/management-of-us-men-women-and-children-with-hemophilia-and-methods-and-demographics-of-the-bridging-hemophilia-b-experiences-results-and-opportunities-into-solutions-b-hero-s-study
#14
Tyler W Buckner, Michelle Witkop, Christine Guelcher, Mary Jane Frey, Susan Hunter, Skye Peltier, Michael Recht, Christopher Walsh, Craig M Kessler, Wendy Owens, David B Clark, Neil Frick, Michelle Rice, Neeraj N Iyer, Natalia Holot, David L Cooper, Robert Sidonio
The Bridging Hemophilia B Experiences, Results and Opportunities Into Solutions (B-HERO-S) initiative was launched in an effort to address specific gaps in the understanding of the psychosocial impact of mild-moderate-severe hemophilia B. The original Hemophilia Experiences, Results and Opportunities (HERO) qualitative study evaluated the needs of people with hemophilia A or B in multiple countries; however, a majority of participants had the more common moderate-severe hemophilia A. The B-HERO-S study was designed in collaboration with the hemophilia community to evaluate the needs of adults with hemophilia B and caregivers of children with hemophilia B, including affected women and caregivers of girls with hemophilia...
April 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/28319336/impact-of-mild-to-severe-hemophilia-on-engagement-in-recreational-activities-by-us-men-women-and-children-with-hemophilia-b-the-bridging-hemophilia-b-experiences-results-and-opportunities-into-solutions-b-hero-s-study
#15
Kimberly Baumann, Grace Hernandez, Michelle Witkop, Skye Peltier, Spencer Dunn, Susan Cutter, Neil Frick, Kimberly Haugstad, Christine Guelcher, Mary Jane Frey, Dawn Rotellini, David B Clark, Neeraj N Iyer, David L Cooper
The psychosocial impact of hemophilia on activities was recently investigated in the Hemophilia Experiences, Results and Opportunities (HERO) study (675 people with hemophilia and 561 caregivers of children with hemophilia in 10 countries). The impact of hemophilia B may not be accurately reflected in the HERO results, as ~75% of respondents described issues affecting males with hemophilia A. To address the needs of this population, the Bridging Hemophilia B Experiences, Results and Opportunities Into Solutions (B-HERO-S) was developed as a pilot study in the United States in collaboration with the hemophilia community...
April 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/28319178/inter-nesting-movements-and-habitat-use-of-adult-female-kemp-s-ridley-turtles-in-the-gulf-of-mexico
#16
Donna J Shaver, Kristen M Hart, Ikuko Fujisaki, David Bucklin, Autumn R Iverson, Cynthia Rubio, Thomas F Backof, Patrick M Burchfield, Raul de Jesus Gonzales Diaz Miron, Peter H Dutton, Amy Frey, Jaime Peña, Daniel Gomez Gamez, Hector J Martinez, Jaime Ortiz
Species vulnerability is increased when individuals congregate in restricted areas for breeding; yet, breeding habitats are not well defined for many marine species. Identification and quantification of these breeding habitats are essential to effective conservation. Satellite telemetry and switching state-space modeling (SSM) were used to define inter-nesting habitat of endangered Kemp's ridley turtles (Lepidochelys kempii) in the Gulf of Mexico. Turtles were outfitted with satellite transmitters after nesting at Padre Island National Seashore, Texas, USA, from 1998 through 2013 (n = 60); Rancho Nuevo, Tamaulipas, Mexico, during 2010 and 2011 (n = 11); and Tecolutla, Veracruz, Mexico, during 2012 and 2013 (n = 11)...
2017: PloS One
https://www.readbyqxmd.com/read/28315477/magnetic-but-not-non-magnetic-reduced-graphene-oxide-in-spinal-cord-increases-nociceptive-neuronal-responsiveness
#17
Luis Paulo Manzo, Helder Ceragioli, Ivan José Bonet, Catarine Massucato Nishijima, Willians Fernando Vieira, Elaine Conceição Oliveira, João-Batista Destro-Filho, César Renato Sartori, Claudia Herrera Tambeli, Carlos Amilcar Parada
The interference between external magnetic fields and neurophysiology is not new, however, the role of the neuronal magnetic field remains unclear. This study aimed at investigating a possible role of the neuronal magnetic field in nociception. Highly and poorly magnetic reduced graphene oxide (rGO) were injected intrathecally in rats. Nociceptive responsiveness was greater in rats that received highly magnetic-rGO in von Frey electronic or intraplantar capsaicin tests. Furthermore, in vitro experiments demonstrated that the number of KCl-responsive DRG-neurons was greater when treated with highly magnetic-rGO when compared with non-magnetic-rGO...
March 14, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28314949/tolerance-and-cross-tolerance-to-the-antinociceptive-effects-of-oxycodone-and-the-imidazoline-i2-receptor-agonist-phenyzoline-in-adult-male-rats
#18
David A Thorn, Yanan Zhang, Jun-Xu Li
RATIONALE: Emerging evidence suggests the potential utility of combining opioids with imidazoline I2 receptor agonists for chronic pain. However, chronic pain management requires prolonged pharmacotherapy, and the consequence of such combination therapy remains unclear. OBJECTIVE: This study examined the anti-hyperalgesic effect of the opioid oxycodone, the selective I2 receptor agonist phenyzoline, alone and in combination, during prolonged treatment. METHODS: Von Frey filament test was used to examine the anti-hyperalgesic effect of drugs in complete Freund's adjuvant (CFA)-induced inflammatory pain or chronic constriction injury (CCI)-induced neuropathic pain in rats...
March 17, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28306698/oral-application-of-magnesium-l-threonate-attenuates-vincristine-induced-allodynia-and-hyperalgesia-by-normalization-of-tumor-necrosis-factor-%C3%AE-nuclear-factor-%C3%AE%C2%BAb-signaling
#19
Ting Xu, Dai Li, Xin Zhou, Han-Dong Ouyang, Li-Jun Zhou, Hang Zhou, Hong-Mei Zhang, Xu-Hong Wei, Guosong Liu, Xian-Guo Liu
BACKGROUND: Antineoplastic agents, including vincristine, often induce neuropathic pain and magnesium deficiency clinically, but the causal link between them has not been determined. No drug is available for treating this form of neuropathic pain. METHODS: Injection of vincristine (0.1 mg · kg · day, intraperitoneally, for 10 days) was used to induce nociceptive sensitization, which was accessed with von Frey hairs and the plantar tester in adult male Sprague-Dawley rats...
March 17, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28306551/master-equations-and-the-theory-of-stochastic-path-integrals
#20
Markus F Weber, Erwin Frey
This review provides a pedagogic and self-contained introduction to master equations and to their representation by path integrals. Since the 1930s, master equations have served as a fundamental tool to understand the role of fluctuations in complex biological, chemical, and physical systems. Despite their simple appearance, analyses of master equations most often rely on low-noise approximations such as the Kramers-Moyal or the system size expansion, or require ad-hoc closure schemes for the derivation of low-order moment equations...
April 2017: Reports on Progress in Physics
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