Previous data showed that neuropathic pain induced by mechanical lesion of peripheral nerves responds differently to alleviating drugs at cephalic versus extracephalic level. Because neuropathic pain evoked by anti-cancer drugs differs from that triggered by mechanical nerve lesion, we investigated whether differences between cephalic and extracephalic levels could also be characterized in rodents rendered neuropathic by treatment with the anti-cancer platinum derivative oxaliplatin. C57BL/6J mice received two injections and Sprague-Dawley rats three injections of oxaliplatin (10 mg/kg, i.p.) or its vehicle, with three days intervals. Supersensitivity to mechanical (von Frey filaments), cold (acetone drop) and chemical/inflammatory (formalin) stimulations was assessed in vibrissae and hindpaw territories. Transcripts of neuroinflammatory markers were quantified by real-time RT-qPCR in rat ganglia and central tissues. Oxaliplatin induced mechanical allodynia, cold hyperalgesia and chemical/inflammatory supersensitivity at both hindpaw and vibrissal levels in mice and rats. Acute treatment with gabapentin (30 mg/kg i.p.), morphine (3 mg/kg s.c.) or the 5-HT1A receptor agonist 8-OH-DPAT (0.16 mg/kg s.c.) significantly reduced oxaliplatin-induced supersensitivity in hindpaw but not vibrissal territory. In contrast, the antimigraine drugs naratriptan (0.1 mg/kg s.c.) and olcegepant (0.6 mg/kg i.v.) decreased oxaliplatin-induced supersensitivity in vibrissal territory only. Among the various markers investigated, only TRPA1 transcript was upregulated in ganglia of oxaliplatin-treated rats. These data showed that oxaliplatin induced supersensitivity to various stimuli in both cephalic and extra-cephalic territories in rodents. Regional differences in the efficacy of drugs to alleviate oxaliplatin-induced allodynia/hyperalgesia further support the idea that mechanisms underlying neuropathic pain have peculiarities at cephalic versus extra-cephalic level.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.neuropharm.2013.12.011 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
ALTERNATIVE AUTOLOGOUS VEIN GRAFTS VERSUS SINGLE SEGMENT GREAT SAPHENOUS VEIN IN LOWER EXTREMITY BYPASS SURGERY - SINGLE-CENTER STUDY.
Ann Vasc Surg
January 2025
1(st) Department of Pathology, Faculty of Medicine, Masaryk University and St. Anne's University Hospital, Brno, Czech Republic.
Objectives: Studies comparing alternative autologous vein grafts (AAVG) to single-segment great saphenous vein (ssGSV) grafts report mixed results. The status of AAVG as first choice when ssGSV is unavailable is not unequivocal, based on current evidence. Our study compares results between AAVG and ssGSV in lower extremity bypass surgery.
View Article and Find Full Text PDFMaternal and perinatal outcomes after implementation of a more active management in late- and postterm pregnancies in Sweden: A population-based cohort study.
PLoS Med
January 2025
Region Västra Götaland, Sahlgrenska University Hospital, Department of Obstetrics and Gynecology, Gothenburg, Sweden.
Background: The risk of perinatal death and severe neonatal morbidity increases gradually after 41 weeks of pregnancy. We evaluated maternal and perinatal outcomes after a national shift from expectancy and induction at 42+0 weeks to a more active management of late-term pregnancies in Sweden offering induction from 41+0 weeks or an individual plan aiming at birth or active labour no later than 42+0 weeks.
Methods And Findings: Women with a singleton pregnancy lasting 41+0 weeks or more with a fetus in cephalic presentation (N = 150,370) were included in a nationwide, register-based cohort study.
Cervical balloon catheter versus Dilapan-S for outpatient cervical ripening: A randomized controlled trial.
Am J Obstet Gynecol MFM
January 2025
Division of Maternal Fetal Medicine, Brigham and Women's Hospital.
Background: As induction of labor increases in the United States, safe, effective outpatient cervical ripening has been explored as a method to decrease the inpatient time burden. The most effective method of outpatient mechanical cervical ripening remains unclear.
Objective: To evaluate if Dilapan-S is non-inferior to cervical balloon for outpatient cervical ripening (CR) based on change in Bishop score.
A comparative analysis of anatomic total shoulder arthroplasty versus reverse shoulder arthroplasty for posterior glenoid wear patterns.
J Clin Orthop Trauma
February 2025
University of Tennessee Health Science Center ¬ Campbell Clinic Department of Orthopaedic Surgery and Biomedical Engineering, 1400 S. Germantown Pkwy, Germantown, TN, 38138, USA.
Introduction: Reverse shoulder arthroplasty (RSA) and anatomic total shoulder arthroplasty (TSA) are well-known methods of treating glenohumeral arthritis, which often leads to posterior wear of the glenoid. This study compared minimum two-year outcome measures in patients treated with RSA and TSA for Walch B2 and B3 glenoids.
Methods: Thirty-eight shoulders underwent TSA and 40 shoulders underwent RSA by two fellowship-trained shoulder surgeons at a tertiary referral center.
Intrauterine Contraction Monitoring in Chorioamnionitis: A Secondary, Blinded Analysis of a Randomised Controlled Trial Cohort.
BJOG
January 2025
Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Objective: To study the effects of chorioamnionitis on uterine activity and to investigate associations between external and intrauterine monitoring methods and neonatal outcomes.
Design: Secondary analysis of a randomised controlled trial cohort.
Setting: Two labour wards, in a university tertiary hospital and a central hospital.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!