Objective:To evaluate the monitoring value of amplitude-integrated electroencephalography (aEEG) in brain injury among neonates with severe hyperbilirubinemia.Methods:This study retrospectively recruited 223 full-term infants with severe hyperbilirubinemia who underwent aEEG in the Department of Neonatology of Guangzhou Women and Children Medical Center from October 2018 to June 2020. Differences in serum bilirubin level and the incidence of acute bilirubin encephalopathy (ABE) between the normal group ( n=180) and abnormal aEEG group ( n=43) were compared. The monitoring value of aEEG in ABE, and its association with brain stem auditory evoked potential (BAEP) and MRI were studied. Two-independent sample t-test, Mann-Whitney U test and Chi-square test were used for comparing the differences between groups. Goodman-Kruskal Gamma was used for correlation analysis. Results:The total serum bilirubin level [(536.2±154.6) vs (422.1±103.0) μmol/L, t=-5.109, P<0.001] and the incidence of ABE [62.8% (27/43) vs 9.4% (17/180), χ2=62.366, P<0.001] in the abnormal aEEG group were significantly higher than those in the normal aEEG group. The sensitivity and specificity of aEEG in the diagnosis of ABE were 61.3% and 91.1%, respectively. With the progression of ABE from warning period to spasmodic stage, more severe voltage suppression (Gamma=0.847, P=0.003), more disordered sleep-wake cycles (Gamma=0.941, P<0.001) and a more frequent epileptic discharge (Gamma=0.976, P<0.001) were observed. Out of the 223 cases, 148 underwent BAEP. The abnormal rate of aEEG in abnormal BAEP group was significantly higher than that in normal BAEP group [32.7% (33/101) vs 6.4% (3/47), χ2=12.040, P=0.001]. The incidence of abnormal voltage in severe abnormal BAEP group was significantly higher than that in mild abnormal BAEP group [20.6% (7/34) vs 2.6% (1/38), χ2=5.858, P=0.016]. The incidence of epileptic discharge in severe abnormal BAEP group was significantly higher than that in mild abnormal BAEP group [32.4% (11/34) vs 2.6% (1/38), χ2=11.413, P=0.001] and moderate abnormal BAEP group [32.4% (11/34) vs 3.5% (1/29), χ2=8.480, P=0.004]. Among the 223 cases, 108 received MRI examination. The incidence of epileptic discharge in the cases with bilirubin brain injury image was significantly higher than those with normal MRI images [28.6% (10/35) vs 2.6% (1/39), χ2=9.864, P=0.002] and those with other abnormal images [28.6% (10/35) vs 2.9% (1/34), χ2=8.451, P=0.004]. Conclusions:aEEG monitoring is helpful in the diagnosis of ABE and can reflect disease severity. Severe hyperbilirubinemia-induced brain injury in neonates mainly manifests as increased and more frequent epileptic discharge on aEEG. There is a correlation between aEEG monitoring with BAEP and MRI findings.

Objective: To evaluate the difference of plasma myeloperoxidase (MPO) level in different types of acute coronary syndrome (ACS) patients, and the value of baseline MPO level in predicting short-term and long-term outcomes in patients with ACS. Methods: The study cohort was derived from "the 12th Five-Year" National Science and Technology Support Program Project "Study on Comprehensive Intervention and Prognosis of Acute Coronary Syndrome" . We enrolled all hospitalized ACS patients who were enrolled in "the 12th Five-Year" cohort from January 1, 2011 to December 31, 2013. A total of 630 patients from 20 centers were enrolled. According to the diagnosis, the patients were divided into two groups: ST-segment elevation myocardial infarction (STEMI) group and non-ST-elevation acute coronary syndrome (NSTE-ACS) group. Plasma levels of MPO were measured by ELISA method. Cardiovascular events in the hospital were recorded. All patients were followed-up by telephone, follow-up ended December 31, 2015. The occurrence of major adverse cardiovascular events (MACE, defined as cardiac death, recurrent myocardial infarction, unscheduled coronary revascularization procedure and stroke) and all-cause death were recorded. Logistic regression analysis and Cox regression analysis were used to evaluate the predictive value of baseline MPO levels obtained during hospitalization and the long-term outcomes of ACS patients. Results: A total of 597 ACS patients were enrolled in final analysis. Level of plasma MPO in STEMI patients was significantly higher than that of NSTE-ACS patients (34.02(19.31, 67.87) μg/L vs. 27.25(16.69, 52.92) μg/L, P=0.028) . MPO was not related to the in-hospital cardiovascular events (OR=0.797, 95%CI 0.366-1.737, P=0.569). Follow up was completed in 476 patients, median follow-up time was 796 (32, 1 816) days. There were 23 all-cause deaths and 51 MACE. Plasma MPO level was not an independent predictor for all-cause death (HR=1.434, 95%CI 0.502-4.100, P=0.501) and MACE (HR=1.271, 95%CI 0.662-2.442, P=0.471). Conclusion In hospitalized ACS patients, level of plasma MPO was significantly higher in STEMI patients than in NSTE-ACS patients, but MPO could not predict the short-term or long-term outcomes in patients with ACS.

Objective:To analyze the epidemiological and etiological characteristics of a dengue fever outbreak in Hunan province in 2018.Methods:Real-time PCR assay was performed for the laboratory diagnosis of 8 suspected dengue fever cases. Etiological surveillance was performed in 186 suspected dengue fever cases and fever cases who had close contacts with dengue fever patients. C6/36 cells was used for the virus isolation from acute phase serum. By sequencing the full length of E genes of 15 dengue virus strains, phylogenetic analysis was performed based on the sequences obtained, including reference sequences from the NCBI GenBank database, the serotypes and gene subtypes of the virus were analyzed to trace the possible source of transmission. An emergency monitoring of vector density and a retrospective survey of sero-epidemiology in healthy population were conducted in the epidemic area.Results:In the serum samples of 8 suspected patients, 6 were dengue virus RNA positive, and 4 were NS1 antigen positive. In 186 suspected patients, 96 were dengue virus nucleic acid, NS1 antigen or antibody positive in etiological test. A total of 64 dengue virus strains were isolated. The phylogenetic analysis showed that all the dengue virus strains belonged to type 2, which might be from Guangdong or Zhejiang provinces. The Bretub index was up to 65, indicating an extremely high risk of transmission. The positive rate of the dengue virus IgG antibody was 0.53%(2/377) in retrospective survey of 377 healthy people.Conclusion:The field epidemiologic and the molecular genetics analyses showed the outbreak of dengue fever in Hunan in 2018 was caused by imported cases and dengue virus 2.

Non-conventional yeasts such as Yarrowia lipolytica, Pichia pastoris, Kluyveromyces marxianus, Rhodosporidium toruloides and Hansenula polymorpha have proven to be efficient cell factories in producing a variety of natural products due to their wide substrate utilization spectrum, strong tolerance to environmental stresses and other merits. With the development of synthetic biology and gene editing technology, metabolic engineering tools and strategies for non-conventional yeasts are expanding. This review introduces the physiological characteristics, tool development and current application of several representative non-conventional yeasts, and summarizes the metabolic engineering strategies commonly used in the improvement of natural products biosynthesis. We also discuss the strengths and weaknesses of non-conventional yeasts as natural products cell factories at current stage, and prospects future research and development trends.
Yeasts/genetics* ; Yarrowia/metabolism* ; Gene Editing ; Metabolic Engineering

OBJECTIVE: To summarize the effectiveness of the temporal island flap pedicled with the perforating branch of zygomatic orbital artery for repairing defects after periocular malignant tumor resection. METHODS: Between January 2015 and December 2020, 15 patients with periocular malignant tumors were treated. There were 5 males and 10 females with an average age of 62 years (range, 40-75 years). There were 12 cases of basal cell carcinoma and 3 cases of squamous carcinoma. The disease duration ranged from 5 months to 10 years (median, 2 years). The size of tumors ranged from 1.0 cm×0.8 cm to 2.5 cm×1.5 cm, without tarsal plate invasion. After extensive resection of the tumors, the left defects in size of 2.0 cm×1.5 cm to 3.5 cm×2.0 cm were repaired with the temporal island flap pedicled with the perforating branch of zygomatic orbital artery via subcutaneous tunnel. The size of the flaps ranged from 3.0 cm×1.5 cm to 5.0 cm×2.0 cm. The donor sites were separated subcutaneously and sutured directly. RESULTS: All flaps survived after operation and the wounds healed by first intention. The incisions at donor sites healed by first intention. All patients were followed up 6-24 months (median, 11 months). The flaps were not obviously bloated, the texture and color were basically the same as the surrounding normal skin, and the scars at recipient sites were not obviously. There was no complication such as ptosis, ectropion, or incomplete closure of the eyelids and recurrence of tumor during follow-up. CONCLUSION The temporal island flap pedicled with the perforating branch of zygomatic orbital artery can repair the defects after periorbital malignant tumors resection and has the advantages of reliable blood supply, flexible design, and good morphology and function.
Male ; Female ; Humans ; Middle Aged ; Plastic Surgery Procedures ; Skin Transplantation ; Soft Tissue Injuries/surgery* ; Treatment Outcome ; Surgical Flaps ; Arteries/surgery* ; Carcinoma, Squamous Cell/surgery* ; Skin Neoplasms/surgery* ; Perforator Flap/blood supply*

Objective To analyze the current status and hotspots of surgical transmural ablation of atrial fibrillation using CiteSpace and VOSviewer. Methods The Web of Science Core Collection database was used as the data source. The CiteSpace 5.8.R3 and VOSviewer software were used to analyze the related studies on surgical transmural ablation of atrial fibrillation about the authors, countries/institutions, literature co-citation and keywords. Results A total of 109 articles were enrolled. Damiano RJ was the most prolific researcher, while Cox JL was the author with the highest number of citations. The United States was the leading country in this research field. The University of Washington was an important institution in the study of atrial fibrillation transmural ablation. The main hotpots were the effectiveness of surgical ablation, especially Cox-maze procedure, selection of the energy source of surgical ablation, combination of surgical and catheter ablations, and pulmonary vein isolation. Conclusion This study visualizes the current research status of surgical ablation of atrial fibrillation. How to improve the effectiveness and transmurality of surgical ablation is a hot research topic in the surgical treatment of atrial fibrillation. The combination of electrophysiology mapping and surgical ablation may be the development direction in the surgical treatment of atrial fibrillation.