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[Nephrology : what’s new in 2020 ?]

Impact of gliflozines in the treatment of non-diabetic nephropathies and cardiac failure has lately been demonstrated. Tolvaptan has now been recognized in Switzerland as a treatment of hyponatremia. In hemodialysis, some progress has been made in the management of dysfunctional arterio-venous fistulas. A glimmer of hope in the treatment of uremic pruritus? Conservative management of a stable coronary heart disease is also advocated in patients with end-stage kidney disease. Therapy with immune cells may either minimize or remove the need for immunosuppression in renal transplant patients. A new predictive score combining several markers can predict long-term graft failure.

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Does arthroscopic lysis and lavage in subjects with Wilkes III internal derangement reduce pain?

The aim of this study was to determine the efficacy of arthroscopic lysis and lavage on pain in patients with unilateral Wilkes stage III derangement of the temporomandibular joint. Authors retrospectively evaluated whether the arthroscopic lysis and lavage has an impact on pain decrease in patients with moderate osteoarthritis.

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Mild systemic inflammation enhances response to OnabotulinumtoxinA in chronic migraineurs.

The anti-inflammatory effect of OnabotulinumtoxinA (OnabotA) has been a matter of discussion for many years. In chronic migraine, however, increased pro-inflammatory state is associated with good response to OnabotA. We aimed to investigate whether a mild systemic inflammatory state elicited by a common oral infection (periodontitis) could enhance treatment response to OnabotA. In this study, we included 61 chronic migraineurs otherwise healthy treated with OnabotA of which 7 were poor responders and 54 good responders. Before receiving OnabotA therapy, all participants underwent a full-mouth periodontal examination and blood samples were collected to determine serum levels of calcitonin gene-related peptide (CGRP), interleukin 6 (IL-6), IL-10 and high sensitivity C-reactive protein (hs-CRP). Periodontitis was present in 70.4% of responders and 28.6% of non-responders (P = 0.042). Responders showed greater levels of inflammation than non-responders (IL-6: 15.3 ± 8.7 vs. 9.2 ± 4.7 ng/mL, P = 0.016; CGRP: 18.8 ± 7.6 vs. 13.0 ± 3.1 pg/mL, P = 0.002; and hs-CRP: 3.9 ± 6.6 vs. 0.9 ± 0.8 mg/L, P = 0.003). A linear positive correlation was found between the amount of periodontal tissue inflamed in the oral cavity and markers of inflammation (IL-6: r = 0.270, P = 0.035; CGRP: r = 0.325, P = 0.011; and hs-CRP: r = 0.370, P = 0.003). This report shows that in presence of elevated systemic inflammatory markers related to periodontitis, OnabotA seems to reduce migraine attacks. The changes of scheduled inflammatory parameters after treatment and subsequent assessment during an adequate period still need to be done.

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Epidural analgesia does not impact recurrence or mortality in patients after rectal cancer resection.

The relationship between epidural analgesia and rectal cancer outcome is not fully clarified. We aimed to investigate the putative effect of epidural analgesia on the risks of recurrence and mortality after rectal tumour resection. In this monocentric cohort study, we consecutively enrolled patients with stage I-III rectal cancer who underwent tumour resection from 2005 to 2014. Patients received epidural analgesia or intravenous opioid-based analgesia for postoperative pain control. Primary endpoint was first cancer recurrence. Secondary endpoints were all-cause mortality and cancer-specific mortality. We collected 1282 patients in the inverse probability of treatment weighting analyses, and 237 (18.5%) used epidurals. Follow-up interval was median 46.1 months. Weighted Cox regression analysis showed the association between epidural analgesia and recurrence-free survival was non-significant (adjusted hazard ratio [HR] 0.941, 95% CI 0.791-1.119, p = 0.491). Similarly, the association between epidural analgesia and overall survival (HR 0.997, 95% CI 0.775-1.283, p = 0.984) or cancer-specific survival (HR 1.113, 95% CI 0.826-1.501, p = 0.482) was non-significant either. For sensitivity tests, quintile stratification and stepwise forward model selection analyses showed similar results. We did not find a significant association between epidural analgesia and risk of recurrence, all-cause mortality, or cancer-specific mortality in patients with rectal cancer undergoing tumour resection.

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Allosteric modulation of the cannabinoid 2 receptor confers seizure resistance in mice.

Mounting evidence suggests that modulation of cannabinoid 2 receptors (CB2Rs) is therapeutic in mouse models of neurological disorders, including neuropathic pain, neurodegenerative disease, and stroke. We previously showed that reducing CB2R activity increases seizure susceptibility in mice. In the present study, we evaluated the therapeutic potential of the CB2R positive allosteric modulator, Ec21a, against induced seizures in mice. The pharmacokinetic profile of Ec21 demonstrated a similar distribution in brain and plasma, with detection up to 12 hours following injection. Ec21a increased resistance to induced seizures in CF1 wild-type mice and mice harboring the SCN1A R1648H human epilepsy mutation. A rotarod test provided evidence that Ec21a does not cause neurotoxicity-induced motor deficits at its therapeutic dose, and seizure protection was maintained with repeated drug administration. The selectivity of Ec21a for CB2R was supported by the ability of the CB2R antagonist AM630, but not the CB1R antagonist AM251, to block Ec21a-conferred seizure protection in mice, and a lack of significant binding of Ec21a to 34 brain-expressed receptors and transporters in vitro. These results identify allosteric modulation of CB2Rs as a promising therapeutic approach for the treatment of epilepsy.

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Primary intrasellar schwannoma with intratumoral hemorrhage mimicking pituitary apoplexy: a case report.

Tumors growing in the sella turcica are mostly pituitary adenomas. We describe a rare case of primary intrasellar schwannoma with intratumoral bleeding. A 38-year-old man presented with headache in association with bilateral supratemporal quadrantopsia. MRI showed an intrasellar mixed signal mass lesion with suprasellar extension. The majority of the pituitary hormones were normal. He was diagnosed as non-functional pituitary adenoma with pituitary apoplexy. Subtotal resection was achieved eventually via an endoscopic transnasal transsphenoidal approach. The histopathologic diagnosis was schwannoma. It is the first intrasellar schwannoma with intratumoral hemorrhage in literature to date. It implied that the primary intrasellar schwannoma has potential risk of intratumoral bleeding, which should be considered in the differential diagnoses of sellar lesions.

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Lumbosacral subdural hematoma associated with cranial subdural hematoma and craniocerebral surgery: three cases and a systemic literature review.

The authors aim to focus on lumbosacral subdural hematoma (SDH) associated with cranial subdural hematoma and craniocerebral surgery, which has been rarely reported.

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A New Method for Determination of the Keyhole Position in the Lateral Suboccipital Approach to Avoid Transverse-Sigmoid Sinus Injury: Proposition of the Groove Line as a New Surgical Landmark.

The asterion is frequently used as an anatomical landmark to determine the location of a keyhole in the lateral suboccipital approach used in craniotomies. However, the asterion may not be ideal because of large individual differences among patients. We examined a simple and safe method for determining an optimal keyhole position (KP) using the digastric groove as a new landmark in the lateral suboccipital approach.

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Surgery versus Conservative Care for Rathke’s Cleft Cyst.

Rathke's cleft cysts are benign cystic lesions of the sellar region, which may cause headache, pituitary deficiencies and visual disturbances from mass effect. Their management is not standardized yet. This study is about establishing a consensus for medical care of RCC.

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Long-term result of a second or third two-stage revision total knee arthroplasty for infected total knee arthroplasty.

Persistent or recurrent infection after two-stage revision total knee arthroplasty (TKA) for the treatment of an infected TKA is a dreaded complication. The purpose of the current study was to determine the ability of a second or third two-stage revision TKA to control infection, evaluate the long-term survivorship of the TKA prosthesis, and measure the functional outcome after a second or third two-stage revision TKA for reinfection.

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