Objective:To investigate the effects of Shenghui Yizhi Decoction on learning and memory ability of SAMP8 mice; To explore its mechanism.Methods:Totally 24 male SAMP8 mice were randomly divided into model group, donepezil hydrochloride group (1 mg/kg) and Shenghui Yizhi Decoction group (15.6 g/kg), with 8 mice in each group, and eight anti rapid aging mice (SAMR1) of the same age and strain were set as the control group. The mice in each group were given corresponding medication or the same volume of distilled water for 90 days. After administration, Morris water maze was used to detect the learning and memory ability and space exploration ability of mice. Immunohistochemistry was used to detect expression of β Amyloid protein 1-42 (Aβ 1-42) in hippocampal. ELISA was used to detect the levels of interleukin-1β (IL-1β), interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α). Real time PCR was used to detect expressions of NOD-like receptor thermal protein domain associated protein 3 (NLRP3), cysteine protease-1 (Caspase-1), and IL-1β mRNA. Western Blot was used to detect expression of NLRP3, Caspase-1and IL-1β protein. Results:Compared with model group, the spatial exploration ability and memory ability of mice in Shenghui Yizhi Decoction group and donepezil hydrochloride group were improved ( P<0.05, P<0.01), the expression of Aβ 1-42 in hippocampus decreased ( P<0.05, P<0.01), the contents of IL-1β, IL-6 and TNF-α decreased ( P<0.05, P<0.01), and the mRNA and protein expressions of NLRP3, Caspase-1 and IL-1β decreased ( P<0.05, P<0.01). Conclusion:Shenghui Yizhi Decoction can effectively improve the learning and memory ability of SAMP8 mice, and its mechanism may be related to inhibiting the activation of inflammasome and neuroinflammatory response by regulating the NLRP3/ Caspase-1/ IL-1β signaling pathway.

Objective To predict the potential mechanism of Yifei Sanjie prescription in the treatment of lung adenocarcinoma based on network pharmacology,and to verify one of the key signal pathways,Janus protein tyrosine kinase 2(JAK2)/signal transducer and activator of transcription 3(STAT3),by cell experiments in vitro.Methods To screen the main active components and potential action targets of Yifei Sanjie prescription,with traditional Chinese medicine system pharmacological database(TCMSP).To search and retrieve the main targets of lung adenocarcinoma,with human genetic database(GeneCards)and online human Mendelian genetic database(OMIM).To obtain the intersection targets by screening and apply Wayne diagram,then analysis the topology and establish the traditional Chinese medicine-active compound-target network diagram by using of Cytoscape 3.7.2 software.To construct the protein-protein interaction(PPI)network,with the protein-protein interaction platform(STRING)and Cytoscape3.7.2 software.To analyze the functional enrichment of gene ontology(GO)and Kyoto encyclopedia of genes and genomes(KEGG),with the Metascape database.To carry out the molecular docking verification by using of Vina1.2.3 software.Using CCK-8 method to detect the effect of Yifei Sanjie prescription on cell activity.Using the cell scratch test to observe the effect on cell migration.And using Western blot method to test the expression of p-STAT3,STAT3,p-JAK2,JAK2 and VEGF-A.Results 94 active components,329 related drug targets and 1358 lung adenocarcinoma targets were obtained from Yifei Sanjie prescription,among which,150 of them intersected.PPI network visualization analysis shows that the potential key targets of Yifei Sanjie prescription in the treatment of lung adenocarcinoma are protein kinase B1(AKT1),β-actin(ACTB),tumor suppressor gene p53(TP53),serum albumin(ALB),caspase-3(CASP3)and vascular endothelial growth factor A(VEGFA).KEGG enrichment analysis screened 138 related signal pathways,indicating that JAK/STAT signaling pathway may play a key role in the treatment of lung adenocarcinoma with Yifei Sanjie prescription.Molecular docking results showed that quercetin,luteolin,and ursolic acid had good binding activities with JAK2 and STAT3.The cell experiment showed that compared with the blank group,Yifei Sanjie prescription could significantly inhibit the activity of A549 cells,inhibit the migration of A549 cells,and decrease the expression of p-JAK2/JAK2,p-STAT3/STAT3 and VEGF-A protein.In addition,Colivelin,an activator of JAK2/STAT3 pathway,could reverse the effect of Yifei Sanjie prescription on the expression of A549 related proteins.Conclusion Yifei Sanjie prescription has the characteristics of multi-component,multi target and multi pathway in the treatment of lung adenocarcinoma,and its mechanism may be related to the down-regulation of p-JAK2,p-STAT3 and VEGF-A protein expression,thereby inhibiting cell proliferation and migration.

With the escalation of plastic bans and restrictions, bio-based plastics, represented by polylactic acid (PLA), have become a major alternative to traditional plastics in the current market and are unanimously regarded as having potential for development. However, there are still several misconceptions about bio-based plastics, whose complete degradation requires specific composting conditions. Bio-based plastics might be slow to degrade when it is released into the natural environment. They might also be harmful to humans, biodiversity and ecosystem function as traditional petroleum-based plastics do. In recent years, with the increasing production capacity and market size of PLA plastics in China, there is an urgent need to investigate and further strengthen the management of the life cycle of PLA and other bio-based plastics. In particular, the in-situ biodegradability and recycling of hard-to-recycle bio-based plastics in the ecological environment should be focused. This review introduces the characteristics, synthesis and commercialization of PLA plastics, summarizes the current research progress of microbial and enzymatic degradation of PLA plastics, and discusses their biodegradation mechanisms. Moreover, two bio-disposal methods against PLA plastic waste, including microbial in-situ treatment and enzymatic closed-loop recycling, are proposed. At last, the prospects and trends for the development of PLA plastics are presented.
Humans ; Ecosystem ; Biodegradable Plastics ; Polyesters ; Biodegradation, Environmental

Polyurethane (PUR) plastics is widely used because of its unique physical and chemical properties. However, unreasonable disposal of the vast amount of used PUR plastics has caused serious environmental pollution. The efficient degradation and utilization of used PUR plastics by means of microorganisms has become one of the current research hotspots, and efficient PUR degrading microbes are the key to the biological treatment of PUR plastics. In this study, an Impranil DLN-degrading bacteria G-11 was isolated from used PUR plastic samples collected from landfill, and its PUR-degrading characteristics were studied. Strain G-11 was identified as Amycolatopsis sp. through 16S rRNA gene sequence alignment. PUR degradation experiment showed that the weight loss rate of the commercial PUR plastics upon treatment of strain G-11 was 4.67%. Scanning electron microscope (SEM) showed that the surface structure of G-11-treated PUR plastics was destroyed with an eroded morphology. Contact angle and thermogravimetry analysis (TGA) showed that the hydrophilicity of PUR plastics increased along with decreased thermal stability upon treatment by strain G-11, which were consistent with the weight loss and morphological observation. These results indicated that strain G-11 isolated from landfill has potential application in biodegradation of waste PUR plastics.
Plastics/metabolism* ; Polyurethanes/chemistry* ; RNA, Ribosomal, 16S ; Bacteria/genetics* ; Biodegradation, Environmental

OBJECTIVE: To analyze the early effectiveness of unilateral biportal endoscopy (UBE) laminectomy in the treatment of two-level lumbar spinal stenosis (LSS). METHODS: The clinical data of 98 patients with two-level LSS treated with UBE between September 2020 and December 2021 were retrospectively analyzed. There were 53 males and 45 females with an average age of 59.9 years (range, 32-79 years). Among them, there were 56 cases of mixed spinal stenosis, 23 cases of central spinal canal stenosis, and 19 cases of nerve root canal stenosis. The duration of symptoms was 1.5- 10 years, with an average of 5.4 years. The operative segments were L _{2, 3} and L _{3, 4} in 2 cases, L _{3, 4} and L _{4, 5} in 29 cases, L _{4, 5} and L _5, S ₁ in 67 cases. All patients had different degrees of low back pain, among of which 76 cases were with unilateral lower extremity symptoms and 22 cases were with bilateral lower extremity symptoms. There were 29 cases of bilateral decompression in both segments, 63 cases of unilateral decompression in both segments, and 6 cases of unilateral decompression and bilateral decompression of each segment. The operation time, intraoperative blood loss, total incision length, hospitalization stay, ambulation time, and related complications were recorded. Visual analogue scale (VAS) score was used to assess the low back and leg pain before operation and at 3 days, 3 months after operation, and at last follow-up. The Oswestry disability index (ODI) was used to evaluate the functional recovery of lumbar spine before operation and at 3 months and last follow-up after operation. Modified MacNab criteria was used to evaluate clinical outcomes at last follow-up. Imaging examinations were performed before and after operation to measure the preservation rate of articular process, modified Pfirrmann scale, disc height (DH), lumbar lordosis angle (LLA), and cross-sectional area of the canal (CAC), and the CAC improvement rate was calculated. RESULTS: All patients underwent surgery successfully. The operation time was (106.7±25.1) minutes, the intraoperative blood loss was (67.7±14.2) mL, and the total incision length was (3.2±0.4) cm. The hospitalization stay was 8 (7, 9) days, and the ambulation time was 3 (3, 4) days. All the wounds healed by first intention. Dural tear occurred in 1 case during operation, and mild headache occurred in 1 case after operation. All patients were followed up 13-28 months with an average of 19.3 months, and there was no recurrence or reoperation during the follow-up. At last follow-up, the preservation rate of articular process was 84.7%±7.3%. The modified Pfirrmann scale and DH were significantly different from those before operation ( P<0.05), while the LLA was not significantly different from that before operation ( P=0.050). The CAC significantly improved ( P<0.05), and the CAC improvement rate was 108.1%±17.8%. The VAS scores of low back pain and leg pain and ODI at each time point after operation significantly improved when compared with those before operation, and the differences between each time points were significant ( P<0.05). According to the modified MacNab criteria, 63 cases were excellent, 25 cases were good, and 10 cases were fair, with an excellent and good rate of 89.8%. CONCLUSION UBE laminectomy is a safe and effective technique with little trauma and fast recovery for two-level LSS and the early effectiveness is satisfactory.
Male ; Female ; Humans ; Middle Aged ; Laminectomy ; Spinal Stenosis/surgery* ; Constriction, Pathologic/surgery* ; Low Back Pain ; Retrospective Studies ; Blood Loss, Surgical ; Endoscopy ; Lumbar Vertebrae/surgery* ; Spinal Fusion/methods* ; Decompression, Surgical ; Surgical Wound/surgery* ; Treatment Outcome

With the transformation and revolution of the global plastics recycling system, recycling and upcycling of mixed plastics waste not only reduces the carbon emissions of plastics during its life cycle, but also addresses its potential ecological and environmental hazards. This article summarizes an international cooperation project, "MIXed plastics biodegradation and UPcycling using microbial communities" (MIX-UP) which was funded by the National Natural Science Foundation of China and the European Union (NSFC-EU) in 2019. The consortium of MIX-UP consists of 14 partners from European Union and China. Focusing on the global issue of "plastics pollution", this Sino-European MIX-UP project took the mixed waste of petroleum-based plastics (PP, PE, PUR, PET and PS) and bio-based plastics (PLA and PHA) as starting materials for biotechnological conversion into value-added, sustainable biomaterials. MIX-UP has three subprojects: 1) identification of plastics biodegradation pathway and design & engineering of key degrading elements, 2) construction and functional regulation of microbial consortia/enzyme cocktails with high-efficiency for degradation of plastics mixtures, 3) strategy of design and utilization of plastics degradation products for production of high value materials. Through NSFC-EU complementary and cross-disciplinary cooperation, MIX-UP proposes the engineering of a new-to-nature biological route for upcycling, a low carbon and sustainable bio-treatment that is different from the traditional physico-chemical treatment, which will empower the recycling industry to a new dimension. The implementation of the project will not only help to promote innovation and development in the field of biotechnology in China, but also contribute to the achievement of China's carbon neutral goal.
Biodegradation, Environmental ; Biotechnology ; Carbon ; European Union ; Microbiota ; Plastics

Biodegradation of polyurethane (PUR) pollutants by microorganisms has received widespread attention currently. Identification of microorganisms capable of efficiently degrading PUR plastics is a key point. In this study, a strain P10 capable of degrading PUR was isolated from the plastic wastes, and identified as a bacterium belonging to the genus of Brevibacillus based on colony morphology and 16S rDNA phylogenetic analysis. Brevibacillus sp. P10 was capable of degrading 71.4% of waterborne polyurethane (Impranil DLN) after 6 days growth in MSM medium with DLN as a sole carbon source. In addition, strain P10 can use commercial PUR foam as the sole carbon source for growth. Brevibacillus sp. P10 can degrade 50 mg PUR foam after 6 days growth in MSM medium supplemented with 5% (V/V) LB after optimization of degradation conditions. This indicates that Brevibacillus sp. P10 has potential to be used in biodegradation of PUR waste.
Bacteria ; Biodegradation, Environmental ; Phylogeny ; Polyurethanes

Consolidated bioprocessing (CBP) is a multi-step process in a bioreactor, which completes hydrolase production, enzymatic hydrolysis, and microbial fermentation. It is considered to be the most promising process for the production of second-generation biofuels because of its simple steps and low cost. Due to the complexity of lignocellulose degradation and the butanol synthesis pathway, few wild microorganisms can directly utilize lignocellulose to synthesize butanol. With the development of synthetic biology, single-bacterium directly synthesizes butanol using lignocellulose by introducing a butanol synthesis pathway in the cellulolytic Clostridium. However, there are still some problems such as heavy metabolic load of single bacterium and low butanol yield. Co-culture can relieve the metabolic burden of single bacterium through the division of labor in different strains and can further improve the efficiency of butanol synthesis. This review analyzes the recent research progress in the synthesis of biobutanol using lignocellulose by consolidated bioprocessing from both the single-bacterium strategy and co-culture strategy, to provide a reference for the research of butanol and other biofuels.
1-Butanol ; Biofuels ; Butanols ; Fermentation ; Lignin/metabolism*

Objective To investigate the status quo of the cerebral injury in patients with acute stress disorder (ASD) and the impact of family function,mental toughness,and the characteristics of brain lesions on it.Methods A total of 349 patients were enrolled from North China University of Science and Technology affiliated hospital neurology department and neurosurgery department from May 2016 to November 2016 and they were tested with Stanford Acute Stress Reaction Questionnaire (SASRQ),the family function assessment scale (APGAR),Chinese version of mental toughness scale (CD-RISC).Results 349 cases of patients with SASRQ score (57.21±44.97),8 to 39 160 people (45.8％),40 to 56 85 people (24.4％),57 to 150 104 people (29.8％).The results showed that whether the hemiplegia (β=-0.030),family function (β=-0.032),mental toughness (β=0.886),disturbing degree (β=0.052),bad days (β=0.060)were picked in the regression equation (P＜0.05).Conclusion There were obvious acute stress symptoms in patients with brain injury.The individuals who have family dysfunction,the worse the psychological resilience and the higher the disturbance degree of the patients with hemiplegia,may be likely to get acute stress disorder.

Objective To explore the effect of mindfulness-based music therapy (MBMT) on sleep-wakefulness behavior in patients with acute stress disorder (ASD) coexisting sleep disorder with cerebral hemorrhage. Methods A total of 70 patients with cerebral hemorrhage and ASD coexisting sleep disorders were randomly divided into two groups (n=35 each group). The study group was treated with mindfulness and soothing music training on the basis of routine treatment for 28 consecutive days. The control group only received routine treatment. Polysomnography (PSG) was used to compare sleep-wake behavior before and after intervention. Results After the intervention, the numbers of awakenings, awakenings greater than 5 min, micro awakenings, NREM micro awakenings, micro awakenings in phase 1, micro awakenings in phase 2, and REM awakenings were decreased in both groups (P<0.05). The degree of reduction of those parameters were greater and the proportion of total sleep time to recording time was longer in the study group than in the control group (P<0.05). Conclusion Music therapy based on mindfulness can effectively improve the sleep-wakeful behavior of ASD patients with cerebral hemorrhage, change the sleep process, and improve their sleep quality.