Opiates are the primary treatment for pain management in cancer patients reporting moderate to severe pain, and are being increasingly used for non-cancer chronic pain. However, prolonged administrati

/pdf/is-paradoxical-pain-induced-by-sustained-opioid-exposure-an-dauyatkrwj.pdf

Is paradoxical pain induced by sustained opioid exposure an underlying mechanism of opioid antinociceptive tolerance

Progress in cancer treatment has improved the survival of patients with advanced-stage cancers. Consequently, the clinical courses of patients are prolonged and often accompanied by morbidity due to bone metastases. Skeletal-related events (SREs), such as pathological fractures and spinal paralysis, cause impairment in activities of daily life and quality of life (QOL). To avoid serious SREs causing impairment in QOL and survival, early diagnosis and a prophylactic approach are required. It is necessary to initiate a bone management program concurrently with the initiation of cancer treatment to prevent complications of bone metastasis. In addition, the requirement of a multidisciplinary approach through a cancer board focusing on the management of bone metastases and involving a team of specialists in oncology, palliative care, radiotherapy, orthopedics, nuclear medicine, radiology, and physiatrists has been emphasized. In the cancer board, a strong focus is placed on the prevention of complications due to bone metastases and on reductions in the high morbidity, hospitalization rate, and overall costs associated with advanced-stage cancers. Recent reports suggest the usefulness of such approaches. The multidisciplinary approach through a cancer board would improve QOL and prognosis of patients, leading to new or continued systemic therapy for primary cancers.

Multidisciplinary Approach for Bone Metastasis: A Review.

Pain prevalence and predictors among inpatients in a major Italian teaching hospital. A baseline survey towards a pain free hospital

Diagnosis and treatment of bone metastasis requires various types of measures, specialists and caregivers. To provide better diagnosis and treatment, a multidisciplinary team approach is required. The members of this multidisciplinary team include doctors of primary cancers, radiologists, pathologists, orthopaedists, radiotherapists, clinical oncologists, palliative caregivers, rehabilitation doctors, dentists, nurses, pharmacists, physical therapists, occupational therapists, medical social workers, etc. Medical evidence was extracted from published articles describing meta-analyses or randomised controlled trials concerning patients with bone metastases mainly from 2003 to 2013, and a guideline was developed according to the Medical Information Network Distribution Service Handbook for Clinical Practice Guideline Development 2014. Multidisciplinary team meetings are helpful in diagnosis and treatment. Clinical benefits such as physical or psychological palliation obtained using the multidisciplinary team approaches are apparent. We established a guideline describing each specialty field, to improve understanding of the different fields among the specialists, who can further provide appropriate treatment, and to improve patients’ outcomes.

Diagnosis and treatment of bone metastasis: comprehensive guideline of the Japanese Society of Medical Oncology, Japanese Orthopedic Association, Japanese Urological Association, and Japanese Society for Radiation Oncology

Morphine is a well-known μ-opioid receptor (MOR) agonist and an efficient analgesic, but its long-term use inevitably leads to drug addiction and tolerance. Here, we show that specific inhibition of β-arrestin2 with its siRNA lentivirus microinjected in mice periaqueductal gray matter (PAG) significantly improved both acute and chronic morphine analgesia and delayed the tolerance in the hotplate test. The specific effect of β-arrestin2 was proven by overexpression or knockdown of its homology β-arrestin1 in PAG, which showed no significant effects on morphine analgesia. These findings suggest that specific siRNA targeting β-arrestin2 may constitute a new approach to morphine therapy and other MOR agonist-mediated analgesia and tolerance.

https://www.mdpi.com/1422-0067/10/3/954/pdf

Improvement of Morphine-Mediated Analgesia by Inhibition of β-Arrestin 2 Expression in Mice Periaqueductal Gray Matter

With recent advances in the management of cancer, the clinical course of patients with metastatic bone disease is more likely to be prolonged and accompanied by morbidity, including severe pain, hypercalcemia, pathologic fracture, and spinal cord and/or nerve root compression. The early identification of patients at higher risk for developing bone metastases enables practitioners to be proactive in their diagnosis and treatment. A multidisciplinary approach that integrates the diagnosis and treatment of the cancer, symptom management, and rehabilitation ensures optimal care. Bisphosphonates can reduce the number of skeletal-related complications, delay the onset of progressive disease in bone, and relieve metastatic bone pain caused by a variety of solid tumors with a resulting enhanced quality of life. The complexity of the clinical problem and the need to involve an array of health-care providers present a logistical and clinical challenge. A strong argument is made for a thematically integrated bone metastases program as part of the primary care of patients with cancer.

The multidisciplinary approach to bone metastases.

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The multidisciplinary approach to bone metastases.