Objective To analyze the clinical characteristics of respiratory involvement in relapsing polychondritis(RPC). Methods The clinical data of 38 patients with respiratory (larynx, trachea and bronchus) involvement in RPC were retrospectively analyzed. Results The incidence of respiratory involvement in patients with RPC was 51.35%(38/74), and the most common symptoms were cough, wheezing, chest tightness and dyspnea. The incidences of erythrocyte sedimentation rate (ESR) increasing, C- reactive protein (CRP) increasing, fibrinogen increasing, D- dimer increased and rheumatoid factor (RF) positive in patients with respiratory involvement were significantly higher than those in patients without respiratory involvement: 47.37% (18/38) vs. 30.56% (11/36), 52.63% (20/38) vs. 33.33% (12/36), 31.58% (12/38) vs. 25.00% (9/36), 21.05% (8/38) vs. 13.89% (5/36) and 36.84%(14/38) vs. 5.56% (2/36), and there were statistical differences (P<0.05). CT was the main method to discover the respiratory involvement, and MRI could detect early cartilage inflammation lesions. Laryngoscope and bronchoscope could early detect mucosa and cartilage damage. Pathology was given priority to lymphocytes and neutrophils infiltration. Some patients had epithelium metaplasia and even canceration. Primary treatment methods were glucocorticoids combined with immunosuppressant. Airway stenosis and infection was the main factors influencing the prognosis of patients. Conclusions The respiratory involvement is not uncommon in RPC, and early CT, MRI, laryngoscope and bronchoscope examination is an important means of early diagnosis.Early glucocorticoid combined immunosuppressive therapy is the key to achieve good prognosis.

Objective To observe the impacts of Xingnao Kaiqiao acupuncture(AC)method on synaptic plasticity and intestinal flora in stroke rats.Methods The middle cerebral artery occlusion method was applied to establish a rat model of ischemic stroke,and the rats with Zea Longa score of 1-3 were randomly grouped into model(M)group and AC group,and rats without middle cerebral artery occlusion were regarded as the sham(S)group,with 15 animals per group.After modeling,groups S and M were not intervened,and group AC was intervened with AC,once a day,for 7 consecutive days.The Zea Longa method was applied to assess neurological function;transmission electron microscopy(TEM)and Golgi staining were applied to visualize synaptic structures in the ischemic penumbra(IP);Western blot was applied to detect the protein expression of BDNF,SYN and GAP-43 in the IP cortex tissue;ELISA was applied to detect the content of IL-1β,TNF-α,IL-17 in the IP cortex tissue;16S rDNA amplification and sequencing method was applied to analyze the structure of rat intestinal flora.Results Compared with the S group,the M group had irregular synaptic morphology,blurred boundaries,thinned postsynaptic zona densities,higher neurological function scores,protein levels of BDNF,SYN,GAP-43 and content of IL-1β,TNF-α,IL-17(P<0.05),and lower density of spines(P<0.05).Compared with the M group,AC intervention could improve the synaptic morphology,reduce the neurological function score and content of IL-1β,TNF-α,IL-17(P<0.05),and increase the density of dendritic spines,BDNF,SYN,and GAP-43 protein levels(P<0.05).The intestinal flora analysis showed that compared with the S group,the M group had a reduced diversity and number of bacterial flora,at the phylum level,the M group had a lower relative abundance of Bacteroidetes,and higher F/B ratio(P<0.05);at the genus level,the group M had a higher relative abundances of Bacteroides and Rikenbacteria(P<0.05),and lower relative abundances of Lactobacillus and Lachnospiraceae_UCG-006(P<0.05).Compared with the M group,AC intervention could increase the diversity and quantity of the flora,increase the relative abundance of Bacteroidetes and reduce the F/B ratio at the phylum level(P<0.05),increase the relative abundances of Faecalibacterium and Lactobacillus and reduce the relative abundances of Riken,Escherichia-Shigella,etc.at the genus level(P<0.05).Conclusion Xingnao Kaiqiao acupuncture can restore the relative abundance of beneficial bacteria,reduce the relative abundance of harmful bacteria,attenuate brain inflammation,improve synaptic plasticity,and reduce neurological damage in stroke rats.

Postmortem changes on corpses appear immediately after death, and can transform the original structure characteristics of the corpse to different degrees as well as show specific changes on computed tomography （CT） images, sometimes with false positives and false negatives, influencing the identification of injuries or diseases. This paper systematically summarizes the postmortem changes of computed tomography imaging characteristics on corpses, to further expand the application of virtopsy in the practices of forensic pathology identification, and provide reference for the identification of injuries, diseases and changes after normal death.
Autopsy ; Cadaver ; Forensic Pathology/instrumentation* ; Humans ; Postmortem Changes ; Research/trends* ; Tomography, X-Ray Computed