Objective:To explore the causal relationship between gut microbiota and lung function (FEV1/FVC) using two-sample Mendelian randomization method; To explore its application in the TCM field.Methods:This was a Mendelian randomization study. The GWAS data of gut microbiota from the MiBioGen consortium study and the GWAS data of lung function (FEV1/FVC) published by IEU OpenGWAS in the public database were used, and instrumental variables were extracted according to prespecified thresholds. The inverse variance weighted method (IVW) was mainly used for analysis. The results were evaluated according to the effect indicator β value and 95% CI. When the IVW method was statistically significant, further sensitivity analysis was performed. Leave-one-out test, heterogeneity test, horizontal gene pleiotropy test and MR-Egger regression intercept analysis were used to verify the stability and reliability of the results. Results:A total of 10 causal relationships between gut microbiota and lung function (FEV1/FVC) were determined using the IVW method: family. BacteroidalesS24.7group ( β=-0.029, P=0.015), family. ClostridialesvadinBB60group ( β=-0.028, P=0.040), family. Streptococcaceae ( β=-0.056, P=0.042), genus. LachnospiraceaeFCS020group ( β=0.025, P=0.029), genus. Lactococcus ( β=-0.024, P=0.038), genus. Peptococcus ( β=0.025, P=0.049), genus. RuminococcaceaeUCG011 ( β=-0.030, P=0.038), genus. Ruminococcus2 ( β=0.028, P=0.033), genus. Terrisporobacter ( β=-0.030, P=0.018), phylum. Cyanobacteria ( β=0.027, P=0.039). Leave-one-out analysis showed that the results were stable, and the effects of heterogeneity and horizontal gene pleiotropy on causal effect estimation could be removed. Conclusion:The gut microbiota may play a role in the changes of lung function, which to a certain extent confirms the TCM theory of "exterior-interior relationship between the lung and large intestine", and can provide certain reference for the research direction of TCM.

Objective To discuss the nursing cooperation method in CT-guided pulmonary nodule localization using indocyanine green combined with methylene blue.Methods A total of 81 patients,who needed to receive pulmonary nodule localization before thoracoscopic resection,were enrolled in this study.The nursing cooperation measures,including the preparation and injection of indocyanine green combined with methylene blue,breathing mode coordination,position management,precise localization coordination,and psychological care,were analyzed.Results Successful nodule localization was accomplished in all patients.No statistically significant difference in the incidence of adverse events existed between the patients with different clinical characteristics(P＞0.05).The gender,age,lesion site,nodule size,nodule-pleura distance,posture during puncturing and needle path route were not the factors influencing the occurrence of adverse reactions in patients receiving CT-guided pulmonary nodule localization using indocyanine green combined with methylene blue.Conclusion In performing CT-guided pulmonary nodule localization using indocyanine green combined with methylene blue,the nursing cooperation method carries generality and stability,which is suitable for patients with different clinical characteristics.

Tooth germ injury can lead to abnormal tooth development and even tooth loss, affecting various aspects of the stomatognathic system including form, function, and appearance. However, the research about tooth germ injury model on cellular and molecule mechanism of tooth germ repair is still very limited. Therefore, it is of great importance for the prevention and treatment of tooth germ injury to study the important mechanism of tooth germ repair by a tooth germ injury model. Here, we constructed a Tg(dlx2b:Dendra2-NTR) transgenic line that labeled tooth germ specifically. Taking advantage of the NTR/Mtz system, the dlx2b⁺ tooth germ cells were depleted by Mtz effectively. The process of tooth germ repair was evaluated by antibody staining, in situ hybridization, EdU staining and alizarin red staining. The severely injured tooth germ was repaired in several days after Mtz treatment was stopped. In the early stage of tooth germ repair, the expression of phosphorylated 4E-BP1 was increased, indicating that mTORC1 is activated. Inhibition of mTORC1 signaling in vitro or knockdown of mTORC1 signaling in vivo could inhibit the repair of injured tooth germ. Normally, mouse incisors were repaired after damage, but inhibition/promotion of mTORC1 signaling inhibited/promoted this repair progress. Overall, we are the first to construct a stable and repeatable repair model of severe tooth germ injury, and our results reveal that mTORC1 signaling plays a crucial role during tooth germ repair, providing a potential target for clinical treatment of tooth germ injury.
Animals ; Mice ; Mechanistic Target of Rapamycin Complex 1/pharmacology* ; Signal Transduction ; Tooth/metabolism* ; Tooth Germ/metabolism* ; Odontogenesis

Objective:To provide insight into the clinical characteristics, therapy and prognosis of patients with radiation-induced brainstem injury after radiotherapy.Methods:From August 2013 to September 2021, 13 patients with radiation-induced brainstem injury were included in this study at Sun Yat-sen Memorial Hospital, and the general information and strategy of radiotherapy were collected. A retrospective analysis was adopted to investigate the clinical and radiological characteristics, treatment and clinical outcomes.Results:There were 13 cases in total, including 4 females and 9 males. The onset age of enrolled patients ranged from 29 to 66 years with an average of (48.15±10.23) years. The median dose targeted at tumor area was 70 Gy with in 33 fractions. The median interval between radiotherapy and the diagnosis of radiation-induced brainstem injury was 24 months. The common clinical manifestations included dysphagia, bucking dysarthria, dizziness and problem with balance. The MRI radiological features were hypointense on T1WI, hyperintense on T2WI, and irregularly enhanced with contrast. The median follow-up was 45 months. Seven cases got improvements, while 3 had no obvious efficacy and 3 cases died. No significant differences in prognosis were observed between those received traditional glucocorticoid and those received bevacizumab treatment( P=0.079). Conclusions:The common symptoms of radiation-induced brainstem injury were symptoms of posterior cranial nerves injury and ataxia. Lesions mostly happened in pons and medulla, with hypointense on T1WI and hyperintense on T2WI. Half of the patients have improved after treatment. There was no significant difference in prognosis between glucocorticoid and bevacizumab treatment.

Objective To observe the effect of ultrasound-guided transversus abdominis plane block combined with diclofenac sodium suppository in anus on postoperative analgesia and early recov-ery after laparoscopic hysterectomy.Methods Sixty-six patients of laparoscopic hysterectomy,aged 40-60 years,were randomly divided into group T and group D,33 cases in each group.Group T used ultrasound-guided bilateral transversus abdominis plane (TAP)block after surgery.Group D used TAP block and diclofenac sodium suppositories in anus.All patients received PCIA.Postoperative 24 h sufentanil dosage out of analgesia pump and the effective press times were recorded.The incidence of dysphoria,nausea and vomit within postoperative 24 h,the time of first out-of-bed activity,the time of first anal exhaust and the time of removing urine tube were measured.The plasma concentra-tion of interleukin-6(IL-6),C reactive protein (CRP)and cortisol (Cor)were recorded at the follow-ing four time points:before anesthesia,just postoperative moment,8 and 12 h after surgery. Results Compared with group T,the sufentanil dosage [(18.6±3.2)μg vs (40.8±5.1)μg]and the effective press times [(9.3±2.2)times vs (20.4±3.5)times]were fewer in group D (P<0.05).The incidence of dysphoria,and nausea and vomit were less in group D compared with group T (P<0.05).The IL-6,CRP and Cor of group D at 12 h were lower than those of group T (P<0.05). But the times of first out-of-bed activity,anal exhaust and removing urine tube in two groups were not significantly different.Conclusion Transversus abdominis plane block combined with diclofenac sodium suppositories in anus can provide safe and effective postoperative analgesia for laparoscopic hysterectomy,and promote the early fast recovery.

BACKGROUND/AIMS: The relationship between C-peptide levels and gastrointestinal (GI) symptoms in type 2 diabetic patients is not clear. The purpose of this study is to examine the association between fasting C-peptide and GI symptoms of gastroparesis in type 2 diabetic patients. METHODS: We recruited 333 type 2 diabetic patients into the present study. All patients filled out questionnaires of gastroparesis cardinal symptom index (GCSI) to evaluate GI symptoms. Hospital anxiety and depression scale were adopted to define anxiety and depression. Patients with GCSI scores ≥ 1.9 were regarded as having symptoms of gastroparesis. RESULTS: In our study, 71 (21.3%) type 2 diabetic patients had GCSI scores ≥ 1.9. In comparison to patients with scores < 1.9, those with scores ≥ 1.9 had significantly lower fasting c-peptide levels (1.49 ng/mL vs 1.94 ng/mL, P < 0.001), higher prevalence of depression (40.9% vs 18.3%, P < 0.001) and anxiety (28.2% vs 13.0%, P = 0.002). Multivariate logistic regression revealed that fasting C-peptide was still significantly associated with symptoms of gastroparesis (odds ratio, 0.67; 95% confidence intervals, 0.48–0.94; P = 0.021), even after adjustments for age, sex, body mass index, HbA1c, current smoking and drinking status, anxiety, and depression. Furthermore, linear regressions showed that fasting C-peptide was independently and negatively related to GCSI scores (standardized regression coefficient, −0.29; P < 0.001) in patients with at least one GI symptom. CONCLUSION: GI symptoms of diabetic gastroparesis affect approximately 20% of type 2 diabetes patients and are associated with lower fasting C-peptide levels independent of depression and anxiety status.
Anxiety ; Anxiety Disorders ; Body Mass Index ; C-Peptide* ; Depression ; Depressive Disorder ; Diabetes Mellitus ; Drinking ; Fasting* ; Gastroparesis* ; Humans ; Linear Models ; Logistic Models ; Prevalence ; Smoke ; Smoking

Objective: To study the VP1 gene of coxsackievirus A6 (CVA6) and to reveal the molecular epidemiologic characteristics of CVA6 related to hand, foot and mouth disease (HFMD) in Anyang city from 2011 to 2015. Methods: Serotypes of human enterovirus (HEV) were detected with the real-time RT-PCR from the clinical specimens. Primers were designed and used to amply and sequence the VP1 region of CVA6. Phylogenetic tree was constructed and phylogenetic analysis was performed. Selection pressures of the VP1 gene were evaluated for different subgenotypes of CVA6 circulating in China in recent years. Results: A total of 365 specimens with CVA6 positivity were identified in Anyang city during 2011—2015. CVA6 specimens accounted for 19.59% of all HEV-positive specimens. Phylogenetic analysis showed that all CVA6 strains were divided into four genotypes and the genotype D was further divided into two subgenotypes. Among the twenty-two Anyang sequences involved in the phylogeny of CVA6, five sequences belonged to subgenotype D1 and the other seventeen sequences belonged to subgenotype D2. The values of selection pressure of the Chinese CVA6 strains within subgenotype D1 and subgenotype D2 were 0.031 and 0.075, respectively. Only one positively selected site was detected in the VP1 gene of subgenotype D1, meanwhile four were detected in the VP1 gene of subgenotype D2. Conclusions Subgenotype D1 and its successor, subgenotype D2, circulated in Anyang city during 2011—2015. The subgenotype replacement from CVA6 subgenotype D1 to CVA6 subgenotype D2 and the continuous transmission of CVA6 subgenotype D2 were the two major causes of HFMD epidemic related to CVA6 in Anyang city during 2013—2015.

Objective To evaluate the effects of gestational exposure to mobile phone radiation on astrocytes in parietal cortex of rat offspring.Methods Nine male Sprague Dawley rats were mated with nine female rats at the age of 12 weeks.Pregnant rats were randomly divided into three groups including control group,short-term gestational exposure group (STE group) and long-term gestational exposure group (LTE group) with three in each group.From day 2 to day 18 of pregnancy,rats in STE and LTE groups were exposed to a mobile phone in talking mode for 6 h and 24 h per day,respectively.Meanwhile,the mobile phone used in control group was kept in standby mode.Morphology and ultrastructure of cells in parietal cortex of 1 month-old offspring rat were studied by Nissle staining and electron microscope,respectively.Cells positive for glial fibrillary acidic protein (GFAP) and expression of GFAP in parietal cortex were detected by immunohistochemistry and Western bloting.One-way ANOVA,followed by SNK post hoc tests,were used for statistical analysis.Results (1) No significant difference in the morphology of cells in parietal cortex of rat offspring was observed among the three groups by Nissle staining.These cells were regularly arranged with intact cell membrane,clear nuclear membrane,evenly distributed chromatin and distinct nucleoli.(2) Neurons with normal morphology and intact synapse were observed in rat offspring in both control and STE groups.But condensation and migration of nuclear chromatin in neurons and blurred and widened synaptic clefts were observed in LTE group.(3) In offspring of control and STE groups,there were few GFAP-positive cells with small cell body and short processes in parietal cortex.But in LTE group,more GFAP-positive cells with large body and long processes were found.Moreover,long-term exposure to mobile phone during pregnancy resulted in enhanced GFAP expression in parietal cortex (0.79±0.04) as compared with control group (0.37±0.03) and STE group (0.41 ±0.04) (F=147.059,P＜0.001).Conclusions Long-term gestational exposure to mobile phone radiation might lead to activation of astrocytes,increased expression of GFAP and changes in the ultrastructure of neurons in parietal cortex of rat offspring.

Objectives To explore the effect of mibefradil, a kind of novel calcium channel antagonists, on proliferation of human pulmonary artery smooth muscle cells (HPASMCs) induced by platelet-derived growth factor (PDGF). MethodsHPASMCs were culturedin vitro, and randomly divided into control group, PDGF group, Mib group, and PDGF+Mib group. The PDGF group was stimulated by 25 ng/ml of PDGF. Mib group was intervented by 10 μmol/L of Mib. PDGF+Mib group was treated by PDGF and Mib. The reproduction rate in 48 hours and 72 hours were detected by MMT. Cell cycle was detected by lfow cytometry. The expression of proliferating cell nuclear antigen (PCNA) was observed by immunolfuorescence staining (IFS).ResultsThere were statistical differences among four groups in both 48 hours and 72 hours (P all??0.05). There were statistically differences of G0/G1 phase and S phase among four groups (P?

Objective To investigate the usefulness of HC visual laryngoscope designed for unskilled junior emergency resident doctors in respect of increasing the efficiency and success rate of emergency tracheal intubation.Methods A total of 80 patients needed the emergency tracheal intubation were at first divided into two groups randomly (random number).Patients in group A were operated by junior emergency resident doctors and patients in group B were operated by well experienced attending doctors.Then,the two groups of patients above were divided into two groups randomly (random number).Patients in group N were operated with conventional laryngoscope and patients in group HC were managed with HC visual laryngoscope.Then comparisons of the success rate of glottis exposure,the one-time success rate of tracheal intubation,the success rate of tracheal intubation,the complications,the number of attempt in successful intubation cases and the operative time consumed for successful intubation cases among the groups were done.Results (1)The success rate of glottis exposure,the one-time success rate and the success rate of tracheal intubation in group A-HC were 90%,70% and 90%,respectively which were significantly higher than those (50%,20% and 45%)in group A-N (P <0.05).The rate of complication,the number of attempt and operative time consumed for intubation cases in group A-HC were respectively 15%,(1.28 ± 0.43)and (31.44 ±5.06 ) s,which were significantly less than those [45%,(1.89 ±0.79 )and (45.89 ±4.99) s in group A-N (P <0.05 ).(2)The success rate of glottis exposure,the one-time success rate and the success rate of tracheal intubation in group B-N were 80%,65% and 80%, respectively which were significantly higher than those (50%,20% and 45%)in group A-N (P <0.05). The rate of complication,the number of attempt and operative time consumed for successful intubation cases in group B-N were 15%,(1.25 ±0.41)and (39.31 ±4.23)s,respectively which were significantly less than those [45%,(1.89 ±0.79)and (45.89 ±4.99)s]in group A-N (P <0.05).(3)There were no significant statistical differences in above results between group A-HC and group B-HC (P >0.05 ). Conclusions HC visual laryngoscope used by unskilled junior emergency resident doctors for emergency tracheal intubation,could increase success rate of glottis exposure,decrease the number of attempt of intubation,decrease rate of complication,shorten operative time required for intubation thus improving efficiency and success rate of emergency tracheal intubation,and maybe narrow the skill gap between unskilled junior resident doctors and well experienced attending doctors in respect of emergency tracheal intubation.