Rejected

Invasion of dentinal tubules and pulp tissue by pathogenic bacteria may cause infection leading to pulpitis. Sirtuin 6 (SIRT6) is a NAD-dependent protein deacetylase encoded by the SIRT6 gene. The effect of SIRT6 on lipopolysaccharide (LPS)-induced pulpitis and its mechanism of action were discussed in this study. Dental pulp cells (DPCs) were extracted from human teeth and injected with LPS to induce inflammation. The cells injected with LPS showed substantially decreased expression of SIRT6. The overexpression of SIRT6, induced by plasmid-transfection of DPCs with SIRT6 overexpressing vector, led to a marked decrease in proinflammatory cytokines (IL-6, IL-1β, and TNF-α) and deactivation of NF kappa B pathway. Additionally, dentin matrix protein-1 (DMP1), a promoter of inflammation in dental pulp tissues, was downregulated. Further investigation revealed that SIRT6 promotes ubiquitination of the transient receptor potential vanilloid 1 (TRPV1) channel, leading to its degradation and deactivation. The role of TRPV1 in the anti-inflammatory effects of SIRT6 was determined through incubation of SIRT6-expressing dental pulp stem cells (DPSCs) with capsaicin. This incubation counteracted the effect of SIRT6 on cytokines and DMP1. The injection of lentivirus-SIRT6 attenuated LPS-induced pulpitis in vivo by suppressing TRPV1 activity. Thus, SIRT6 inhibits the TRPV1 channel during LPS-induced inflammation of dental pulp. SIGNIFICANCE OF THE STUDY: This study discussed the effect of sirtuin 6 (SIRT6) on lipopolysaccharide (LPS)-induced pulpitis as well as its mechanism of action and found that SIRT6 may be a negative regulator of pulpitis. Additionally, low expression of SIRT6 and high expression of transient receptor potential vanilloid 1 (TRPV1) in LPS-treated human dental pulp cells are closely associated with proinflammatory cytokines, dentin matrix protein 1 expression, and activation of the NF-κB pathway, which indicated that TRPV1 may be a biomarker for pulpitis and the SIRT6-TRPV1-CGRP axis maybe a clinical target due to their role regulating inflammation and neuropathic pain.

The recent addition of intranasal medication options for procedural sedation and analgesia has decreased the need for additional painful procedures such as intravenous lines for medication administration. Intranasal fentanyl (INF) has been used in the prehospital setting, as well as in the emergency department for several years, and is increasingly utilized in other locations such as the neonatal intensive care unit (NICU). A paucity of data exists in these smallest children, so we sought to explore trends in INF use in our NICU. The objective of the study was to describe INF use in the NICU from December 2014 to December 2017. A retrospective cohort study was conducted of patients receiving INF in the NICU of a large free-standing quaternary inner-city children's hospital from December 2014 to 2017. Demographic data were abstracted from the medical record including gestational age on administration, post-menstrual age, day of life on administration, sex, medication initial and total dose, reported indication, and documented adverse events. This study was approved by our local institutional review board. A total of 54 patients received a total of 67 INF administrations: 32 women (59%), median day of life on administration = 57.1 (interquartile range [IQR] = 33.7-110.4), median weeks gestation = 26.0 (IQR = 24.1-36.1), post-menstrual age = 38.1 weeks (IQR = 33.1-45.4). Initial doses of medications were 1.49 µg/kg/dose INF (range = 0.5-2 µg/kg). Intranasal adjuncts are increasingly used in the NICU. Starting dose of INF is 1.5 µg/kg/dose, and typically, one dose is given.

Proxelan® and antibiotics combined therapy was successfully previously used in the treatment of symptoms of patients with chronic prostatitis. Aim of the present study was to investigate the effects of Proxelan® monotherapy on pain symptoms of patients with chronic prostatitis (CP) or chronic pelvic pain syndrome (CPPS) in a prospective pilot study.

Changes over time to self-managed chronic pain treatments are not a routine part of pain management discussions and might provide insight into adjustments that improve pain outcomes.

It is suspected that many canine cutaneous adverse food reactions (CAFR) are true immunological hypersensitivities; however, few specific dietary allergens have been identified.

Multisensory afferent inputs to the cervical spine affect the generation of neck muscle control. Chronic neck pain (CNP) and muscle fatigue are factors that disturb somatosensory function. Whether they affect postural control under self-initiated perturbation in daily activities is still unclear.

A pressure wire offers a dynamic tool to assist in the measurement of the pressure gradient and assessment of the functional significance of stenosis. The author presents a patient with idiopathic intracranial hypertension(IIH) who was diagnosed with cerebral venous sinus stenosis (CVSS). Venography accompanied by pressure measurement was utilized to guide the stent placement for CVSS.

To determine how muscle spindles are involved in the pathophysiology of chronic myofascial trigger spots (MTrSs, similar to myofascial trigger points) in a rat injury model according to the characteristics of the Hoffmann reflex (H-reflex) and the anatomical relationship between muscle spindles and MTrSs.

Pain is a serious problem for patients with leg ulcers. Research mainly focuses on dressing-related pain; however, chronic background pain may be just as devastating. Our main objective was to describe the prevalence and characteristics of wound-related background pain in persons with chronic venous leg ulcers. We performed a systematic review to synthesise data from quantitative studies. Studies were eligible if they reported original baseline- or cross-sectional data on background pain in chronic venous leg ulcers. The initial search identified 2454 publications. We included 36 descriptive and effect studies. The pooled prevalence of wound-related background pain (from 10 studies) was 80% (95% CI 65-92%). The mean pain intensity score (from 27 studies) was 4 (0-10 numeric rating scale) (95% CI 3.4-4.5). Other pain characteristics could not be synthesised. We identified few sufficiently high-quality studies on prevalence and intensity of wound-related background pain in patients with chronic venous leg ulcers. Four of five persons experience mild to moderate pain. Because of poor quality of pain assessment and report, we believe that the available research does not provide a sufficiently nuanced understanding of background pain in this patient group.

Chronic neck and upper back pain occurs in 40%-60% of patients that suffer whiplash injury. Increasing evidence points to a dysfunction of the cervical and thoracic muscles as the predominant cause of persistent pain in this cohort. Response to standard management including physiotherapy, psychotherapy, medications, and acupuncture are often inadequate. As a result, there is significant functional impairment leading to excessive health care costs. The authors present a novel treatment, intermediate cervical plexus block with depot steroids, in 3 patients presenting with refractory chronic neck and upper back pain from whiplash injury that produced durable analgesia and enabled return to employment.