[Risk factors for long-term result of endovascular treatment for auto-immune disease related abdominal aorta pseudo-aneurysm]

Objective: To summarize results of endovascular treatment for auto-immune disease related abdominal aorta pseudo-aneurysm(AIPA), and to analysis clinical predictors of long term major adverse clinical events(MACE). Methods: Retrospectively collected endovascular treatment for AIPA cases in Peking Union Medical College Hospital within 2000 to 2015. Twenty-nine cases with AIPA treated by endovascular therapy were enrolled in this study. Twenty five cases were male, range from 23 to 67 years old, mean age was (39.3±11.4) years old.Demographic characters, locations of aneurysms, type to auto-immune disease, immuno medical therapy, operation strategy and long term follow-up data were reported. Statistical analysis was made to verify clinical predictors of long-term MACE. Results: Among the 29 cases, 22 cases with bechet's disease, 4 cases with Takayasu's arteritis, 2 cases with systemic lupus erythematosus, 1 cases with polyarteritis nodosa. Eight cases had ruptured or pending ruptured pesudo-aneurysms, the rest 21 cases had dull pain or no overt symptome. Twenty-four cases had infra-renal artery aneurysms, two were para-and supra-renal artery, two were supra-celiac artery, and the rest one had multiple aneurysms involved thoracic and abdominal aorta.All the cases received regular immune medical therapy except the three emergency cases. All the operations were under general anaesthesia. Nineteen cases underwent classical Endovascular aortic aneurysm repair (EVAR), 5 cases underwent fenestration EVAR, the rest 5 cases underwent hybrid procedure. All the 29 operations were successful, without conversion to open surgery. Major peri-operation complication included 3 incision infection, 3 pulmonary infection. No death occurred. All the cases received regular follow-up from 1 to 120 months. There were five recurrence of pseudo-aneurysm, 1 case suffered from iliac limb occlusion. 5 cases received re-intervention procedure. No occlusion of revascularizal visceral artery was found during follow-up. There were 3 deaths during follow-up, with 1 aneurysm related death, the rest died due to other reasons. Single factors logical regressions analysis showed discontinuing immune medicine therapy and age no less than 40 years significantly related long-term MACE(P<0.05). Meanwhile, type of original auto-immune disease, none classical EVAR were not significant related to MACE. Conclusions: Endovascular therapy is safe and effective for AIPA. Regular peri-operation and long-term immunotherapy is key to success.

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T, Fister M, Knafelj R, Muraray Govind P, Brahmananda Reddy N, Pratheema R, Arul ED, Devachandran J, Velasco MB, Dalcomune DM, Knafelj R, Fister M, Chin-Yee N, D’Egidio G, Thavorn K, Heyland D, Kyeremanteng K, Murchison AG, Swalwell K, Mandeville J, Stott D, Guerreiro I, Devine H, MacTavish P, McPeake J, Quasim T, Kinsella J, Daniel M, Goossens C, Marques MB, Derde S, Vander Perre S, Dufour T, Thiessen SE, Güiza F, Janssens T, Hermans G, Vanhorebeek I, De Bock K, Van den Berghe G, Langouche L, Devine H, MacTavish P, Quasim T, Kinsella J, Daniel M, McPeake J, Miles B, Madden S, Devine H, Weiler M, Marques P, Rodrigues C, Boeira M, Brenner K, Leães C, Machado A, Townsend R, Andrade J, MacTavish P, McPeake J, Devine H, Kinsella J, Daniel M, Kishore R, Fenlon C, Quasim T, Fiks T, Ruijter A, Te Raa M, Spronk P, Chiew YS, Docherty P, Dickson J, Moltchanova E, Scarrot C, Pretty C, Shaw GM, Chase JG, Hall T, Ngu WC, Jack JM, Morgan P, Avard B, Pavli A, Gee X, Bor C, Akin Korhan E, Demirag K, Uyar M, Shirazy M, Fayed A, Gupta S, Kaushal A, Dewan S, Varma A, Ghosh E, Yang L, Eshelman L, Lord B, Carlson E, Helme E, Broderick R, Hadfield S, Loveridge R, Ramos J, Forte D, Yang F, Hou P, Dudziak J, Feeney J, Wilkinson K, Bauchmuller K, Shuker K, Faulds M, Raithatha A, Bryden D, England L, Bolton N, Tridente A, Bauchmuller K, Shuker K, Tridente A, Faulds M, Matheson A, Gaynor J, Bryden D, ᅟ SSYHRC, Ramos J, Peroni B, Daglius-Dias R, Miranda L, Cohen C, Carvalho C, Velasco I, Forte D, Kelly JM, Neill A, Rubenfeld G, Masson N, Min A, Boezeman E, Hofhuis J, Hovingh A, De Vries R, Spronk P, Cabral-Campello G, Aragão I, Cardoso T, Van Mol M, Nijkamp M, Kompanje E, Ostrowski P, Omar A, Kiss K, Köves B, Csernus V, Molnár Z, Hoydonckx Y, Vanwing S, Stessel B, Van Assche A, Jamaer L, Dubois J, Medo V, Galvez R, Miranda JP, Stone C, Wigmore T, Arunan Y, Wheeler A, Bauchmuller K, Bryden D, Wong Y, Poi C, Gu C, Molmy P, Van Grunderbeeck N, Nigeon O, Lemyze M, Thevenin D, Mallat J, Ramos J, Correa M, Carvalho RT, Forte D, Fernandez A, McBride C, Koonthalloor E, Walsh C, Webber A, Ashe M, Smith K, Jeanrenaud P, Marudi A, Baroni S, Ragusa F, Bertellini E, Volakli EA, Chochliourou E, Dimitriadou M, Violaki A, Mantzafleri P, Samkinidou E, Vrani O, Arbouti A, Varsami T, Sdougka M, Bollen JA, Van Smaalen TC, De Jongh WC, Ten Hoopen MM, Ysebaert D, Van Heurn LW, Van Mook WN, Sim K, Fuller A, Roze des Ordons A, Couillard P, Doig C, Van Keer RV, Deschepper RD, Francke AF, Huyghens LH, Bilsen JB, Nyamaizi B, Dalrymple C, Molokhia A, Dobru A, Marrinan E, Ankuli A, Molokhia A, McPeake J, Struthers R, Crawford R, Devine H, Mactavish P, Quasim T, Morelli P, Degiovanangelo M, Lemos F, MArtinez V, Verga F, Cabrera J, Burghi G, Rutten A, Van Ieperen S, De Geer S, Van Vugt M, Der Kinderen E, Giannini A, Miccinesi G, Marchesi T, Prandi E. Erratum to: 36th International Symposium on Intensive Care and Emergency Medicine: Brussels, Belgium. 15-18 March 2016

[This corrects the article DOI: 10.1186/s13054-016-1208-6.].

The effect of soy or isoflavones on homocysteine levels: a meta-analysis of randomised controlled trials

BACKGROUND

The present study aimed to evaluate the effect of soy or isoflavones on blood homocysteine levels via a systematic review and meta-analysis.

METHODS

Pubmed, Embase, Web of Science and the Cochrane Library (up to 16 December 2015) were used for the literature review. Only randomised controlled trials were included. The primary outcome was the standard mean difference (SMD) of blood homocysteine levels between the experimental and control groups.

RESULTS

Nineteen randomised controlled studies were included for qualitative analysis. Eighteen studies were included in the data synthesis. Soy or isoflavones were found to have no effect on homocysteine levels, with a SMD of -0.21 (95% confidence interval = -0.43 to 0.00, I² =67.7%, random effect model). No publication bias was found among those studies (P = 0.296 for Egger's test, and P = 0.198 for Begg's test).

CONCLUSIONS

Soy or isoflavones were not found to be associated with a reduction in homocysteine levels. Further studies might still be needed in carefully selected populations.

[Manganese enhanced magnetic resonance imaging investigation in the central auditory pathway of the cat]

OBJECTIVE

To compare enhancement of the central auditory pathway in cats receiving auditory stimulation between manganese enhanced magnetic resonance imaging (MEMRI) with intraperitoneal manganese injection route and MEMRI with intratympanic manganese injection route, and investigate the optimal method for displaying enhancement of the central auditory pathway.

METHODS

Twenty-seven normal hearing adult cats were randomly divided into three groups, receiving intraperitoneal manganese injection, left intratympanic manganese injection or left intratympanic gadolinium injection respectively.All cats received white noise stimulation of 80 dB in twenty-four hours after injection.Three dimensionally coronal T1-weighted imaging of the cat brain was obtained with an animal dedicated MRI scanner.The signal noise ratios (SNRs) of bilateral cochlear nuclei (CN), dorsal nuclei of the trapezoid bodies (DNTB), caudal colliculi (CC) and auditory cortices (AC) were measured on reconstructed images and compared.

RESULTS

Obvious increased SNRs on both sides were shown in intraperitoneal mangasese injection group while left predilection was shown in intratympanic manganese injection group: left CN 45.7±6.0, 37.4±11.9, 23.9±2.7, F=17.694, P=0.000; left DNTB 50.5±11.2, 37.1±11.2, 27.6±7.3, F=11.781, P=0.000; left CC 37.6±3.9, 22.6±3.1, 17.9±0.7, F=111.898, P=0.000; left AC 27.7±2.5, 17.3±2.3, 14.5±1.0, F=105.132, P=0.000; right CN 42.7±8.3, 23.9±3.0, 22.7±2.1, F=41.492, P=0.000; right DNTB 44.1±8.3, 21.9±3.0, 23.9±4.0, F=27.862, P=0.000; right CC 38.0±4.0, 21.9±3.0, 17.6±0.9, F=120.032, P=0.000; right AC 26.7±3.4, 17.1±2.9, 14.9±1.3, F=64.587, P=0.000.Compared with the left intratympanic gadolinium injection group, the intraperitoneal manganese injection group showed higher SNRs in bilateral CN and CC (P<0.05), and the left intratympanic manganese injection group showed higher SNRs in left CN, AC and bilateral CC.The SNRs of right CN, bilateral DNTB, CC and AC were significantly higher in the intraperitoneal manganese injection group than those in the left intratympanic manganese injection group (P<0.05).

CONCLUSION

MEMRI with intraperitoneal manganese injection might be the optimal method for displaying enhancement of the central auditory pathway in cats receiving auditory stimulation.

Association Between Smoking and p53 Mutation in Oesophageal Squamous Cell Carcinoma: A Meta-analysis

AIMS

Several studies have evaluated the association between smoking and p53 mutation in oesophageal squamous cell carcinoma (ESCC), but the conclusions are inconsistent. The aim of the present study was to carry out a meta-analysis evaluating the relationship between smoking and p53 mutation in patients with ESCC.

MATERIALS AND METHODS

Eligible studies were identified through searches in PubMed and EMBASE. The odds ratio with 95% confidence interval was used to assess the association. In total, 20 studies were identified that met the selection criteria; these studies were analysed using STATA 12.0 software.

RESULTS

The 20 studies identified comprised 1524 ESCC patients, of whom 72.97% were smokers and 27.03% were non-smokers. The pooled odds ratio of p53 mutation in ESCC for any cigarette smoking versus no smoking was 1.28 (95% confidence interval=0.88-1.88). The estimated odds ratios were 1.06 (95% confidence interval=0.56-2.00, based on five studies, 129 light smokers and 70 non-smokers) for light smoking and 2.01 (95% confidence interval=1.12-3.60, based on five studies, 223 heavy smokers and 73 non-smokers) for heavy smoking.

CONCLUSION

The results of our meta-analysis indicate an overall positive relationship between heavy smoking and p53 mutation in ESCC. Heavy smokers with ESCC have a higher risk for p53 mutation than non-smokers. Large-scale clinical studies are still needed to draw a more precise conclusion.

Tunable catalytic reactivity of small palladium clusters supported on graphene: a first-principles study

The catalytic reactivity is controlled by the binding strength between the catalyst surface and reaction intermediates.

Breed distribution of SOD1 alleles previously associated with canine degenerative myelopathy

Background

Previous reports associated 2 mutant SOD1 alleles (SOD1:c.118A and SOD1:c.52T) with degenerative myelopathy in 6 canine breeds. The distribution of these alleles in other breeds has not been reported.

Objective

To describe the distribution of SOD1:c.118A and SOD1:c.52T in 222 breeds.

Animals

DNA from 33,747 dogs was genotyped at SOD1:c.118,SOD1:c.52, or both. Spinal cord sections from 249 of these dogs were examined.

Methods

Retrospective analysis of 35,359 previously determined genotypes at SOD1:c.118G>A or SOD1:c.52A>T and prospective survey to update the clinical status of a subset of dogs from which samples were obtained with a relatively low ascertainment bias.

Results

The SOD1:c.118A allele was found in cross‐bred dogs and in 124 different canine breeds whereas the SOD1:c.52T allele was only found in Bernese Mountain Dogs. Most of the dogs with histopathologically confirmed degenerative myelopathy were SOD1:c.118A homozygotes, but 8 dogs with histopathologically confirmed degenerative myelopathy were SOD1:c.118A/G heterozygotes and had no other sequence variants in their SOD1 amino acid coding regions. The updated clinical conditions of dogs from which samples were obtained with a relatively low ascertainment bias suggest that SOD1:c.118A homozygotes are at a much higher risk of developing degenerative myelopathy than are SOD1:c.118A/G heterozygotes.

Conclusions and Clinical Importance

We conclude that the SOD1:c.118A allele is widespread and common among privately owned dogs whereas the SOD1:c.52T allele is rare and appears to be limited to Bernese Mountain Dogs. We also conclude that breeding to avoid the production of SOD1:c.118A homozygotes is a rational strategy.

Magnetism and magnetic structures of PrMn2Ge2-xSix

The structural and magnetic properties of seven PrMn2Ge2-xSix compounds with Si concentrations in the range x = 0.0-2.0 have been investigated by x-ray diffraction, magnetic (5-350 K), differential scanning calorimetry (300-500 K) and neutron diffraction (3-480 K) measurements. Replacement of Ge by Si leads to a contraction of the unit cell and significant modifications to the magnetic states--a crossover from ferromagnetism at room temperature for Ge-rich compounds to antiferromagnetism for Si-rich compounds. The compositional dependence of the room temperature lattice parameters exhibits non-linear behaviour around x = 1.2, reflecting the presence of magnetovolume effects. Re-entrant ferromagnetism has been observed in both PrMn2Ge1.0Si1.0 and PrMn2Ge0.8Si1.2 compounds with co-existence of canted ferromagnetism and canted antiferromagnetism detected, with both compounds exhibiting a larger unit cell volume in the canted Fmc state than in the canted AFmc. Combined with earlier studies of this system, the magnetic phase diagram has been constructed over the full range of PrMn2Ge2-xSix compositions (x = 0.0-2.0) and over the temperature range of interest (T = 3-480 K). In common with other systems in the RMn2X2 series, the overall magnetic behaviour of PrMn2Ge2-xSix compounds is governed by the strong dependence of the magnetic couplings on the Mn-Mn spacing within the ab-plane. Both total manganese moment µ(Mn)(tot) and in-plane manganese moment µ(Mn)(ab) at 5 K are found to decrease with increasing Si content, which can be ascribed to the reduction of Mn-Mn separation distance and stronger Si-Mn hybridization compared with Ge-Mn hybridization. Pr site ferromagnetic ordering occurs for x < 1.6 below T(Pr)(C).

Characterization of Neuronal Ceroid-Lipofuscinosis in 3 Cats

Three young domestic shorthair cats were presented for necropsy with similar histories of slowly progressive visual dysfunction and neurologic deficits. Macroscopic examination of each cat revealed cerebral and cerebellar atrophy, dilated lateral ventricles, and slight brown discoloration of the gray matter. Histologically, there was bilateral loss of neurons within the limbic, motor, somatosensory, visual, and, to a lesser extent, vestibular systems with extensive astrogliosis in the affected regions of all 3 cases. Many remaining neurons and glial cells throughout the entire central nervous system were distended by pale yellow to eosinophilic, autofluorescent cytoplasmic inclusions with ultrastructural appearances typical of neuronal ceroid-lipofuscinoses (NCLs). Differences in clinical presentation and neurological lesions suggest that the 3 cats may have had different variants of NCL. Molecular genetic characterization in the 1 cat from which DNA was available did not reveal any plausible disease-causing mutations of the CLN1 ( PPT1), CLN3, CLN5, CLN8, and CLN10 ( CTSD) genes. Further investigations will be required to identify the mutations responsible for NCLs in cats.

Retinoic acid regulates the development of a gut-homing precursor for intestinal dendritic cells

The vitamin A metabolite retinoic acid (RA) regulates intestinal immune responses through immunomodulatory actions on intestinal dendritic cells (DCs) and lymphocytes. Here, we show that RA also controls the generation of gut-tropic migratory DC precursors, referred to as pre-mucosal DCs (pre-μDCs). Pre-μDCs express the gut trafficking receptor α4β7 and home preferentially to the intestines. They develop in the bone marrow (BM), can differentiate into CCR9⁺ plasmacytoid DCs as well as conventional DCs (cDCs), but preferentially give rise to CD103⁺ intestinal cDCs. Generation of pre-μDCs in vivo in the BM or in vitro is regulated by RA and RA receptor α (RARα) signaling. The frequency of pre-μDCs is reduced in vitamin A-deficient animals and in animals treated with RAR inhibitors. The results define a novel vitamin A-dependent, RA-regulated developmental sequence for DCs and identify a targeted precursor for CD103⁺ cDCs in the gut.