Recycling of neomycin fermentation residue using SEA-CBS technology: Growth performance and antibiotic resistance genes.

Antibiotic fermentation residue (AFR) is a form of bioavailable matter, that represents a typical category of hazardous waste associated with drug production in China. The disposal of these residues seriously restricts the sustainable development of the pharmaceutical industry. In this study, the steam explosion and aerobic composting (SEA-CBS) system was developed to thoroughly convert neomycin fermentation residue to organic fertilizer. The results implied that the ultimate removal rate of antibiotics was as high as 99.9% in all cases, including macrolide (kitasamycin and spiramycin), lincosamide (lincomycin), and beta-lactam (cephalosporin and penicillin) antibiotic biowastes. Pot experiments were also conducted to study the attenuation rule of antibiotic residues in the soil, and the distribution of antibiotic resistant genes from trace antibiotics. The produced fertilizer presented the better performance on mustard growth than conventional fertilizers. The average plant height and biomass were increased by 14.33%-55.83% and 136.71%-326.83%, respectively, after SEA-CBS pretreatment. Moreover, neomycin was the primary selective pressure, and six antibiotic resistance genes (ARGs) correlated with neomycin were screened. The acc(6')ib gene was identified as the target ARGs, the main resistance mechanism was antibiotic inactivation, and the absolute and relative abundances were 1.06 × 105 ± 3.80 × 104 copies/g and 6.23 × 10-4 ± 1.75 × 10-4 copies/16 s in the NFR-amended soils. The microbial community analysis showed that the variation of the soil microbial community was not dominated by neomycin fermentation residue (NFR) at initial concentrations below 0.42 µg/kg soil. This work demonstrated that the SEA-CBS system not only functioned as an efficient technology for concurrent neomycin sulfate removal and NFR composting, but also applied to a wide range of other antibiotic bio-wastes, which may benefit the recycling of AFR, as well as the data provide a theoretical basis for future agricultural utilization and safe evaluation.

Real-world study evaluating the incidence of liver damage conditions in patients with primary liver cancer using immune checkpoint inhibitor-based combination therapy / 中华肝脏病杂志

Objective: To evaluate the incidence of immune checkpoint inhibitor-based combination therapy-induced liver damage in patients with primary liver cancer. Methods: Clinical data of 65 hospitalized cases of primary liver cancer treated with programmed cell death-1 its ligand programmed death-ligand 1 (PD-1/PD-L1) antibody in the Department of Infectious Diseases of the Second Affiliated Hospital of Chongqing Medical University from January 1, 2018 to March 31, 2021 were retrospectively analyzed. The degree of liver injury before and after treatment was assessed according to CTCAE v5.0. Patients were grouped according to gender, age, presence or absence of cirrhosis, baseline Child-Pugh score, BCLC stage, and treatment regimen to compare the incidence of liver injury under different conditions. The χ (2) test or rank-sum test was used for comparison among multiple groups. Results: 46 cases (70.77%) had liver damage of any grade according to the CTCAE V5.0 criteria during the treatment and observation period. All 6 cases who received standardized anti-hepatitis B virus (HBV) treatment developed liver damage. 10 (15.38%), 15 (23.08%), 19 (29.23%), and 2 (3.08%) cases had grade 1, 2, 3, and 4 liver damage respectively. There was no statistically significant difference in the incidence of liver damage between male and female patients (68.33% and 100%, P = 0.180). There was no statistically significant difference in the incidence of liver damage among different age groups (P = 0.245). The incidence of liver damage in cirrhotic and non-cirrhotic group was 72.22%, and 63.64% (P = 0.370), respectively. The incidence of liver damage in patients with baseline Child-Pugh class A, B, and C were 71.43%, 61.11% and 100%, respectively, and the difference was not statistically significant (P = 0.878). The incidence of liver damage was not statistically significantly different under different BCLC stages (P = 1.000). The incidence of liver damage in the PD-1/PD-L1 antibody monotherapy, PD-1/PD-L1 antibody combined with targeted drug therapy, and PD-1/PD-L1 antibody combined with TACE/radiofrequency ablation treatment group were 60.00%, 67.85%, and 86.67%, respectively. There was no statistically significant difference in the incidence of liver damage between the treatment regimen (P = 0.480). Conclusion: Immune checkpoint inhibitor therapy-induced liver damage is common in patients with primary liver cancer; however, it rarely severely endangers the patient's life. Additionally, patient's gender, age, presence or absence of cirrhosis, baseline liver function, BCLC stage and the immunotherapy regimen has no effect on the incidence of immune-related liver damage.

Severe Type of COVID-19: Pathogenesis, Warning Indicators and Treatment / 中国结合医学杂志

Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2, is a major public health issue. The epidemic is unlikely to be contained until the global launch of safe and effective vaccines that could prevent serious illnesses and provide herd immunity. Although most patients have mild flu-like symptoms, some develop severe illnesses accompanied by multiple organ dysfunction. The identification of pathophysiology and early warning biomarkers of a severe type of COVID-19 contribute to the treatment and prevention of serious complications. Here, we review the pathophysiology, early warning indicators, and effective treatment of Chinese and Western Medicine for patients with a severe type of COVID-19.

Association of Cytokines with Alanine Aminotransferase, Hepatitis B Virus Surface Antigen and Hepatitis B Envelope Antigen Levels in Chronic Hepatitis B / 中华医学杂志(英文版)

Background@#Cytokines play an important role in occurrence and recovery of hepatitis B virus (HBV) infection. The aim of this study was to investigate the changes of cytokines concentration and its correlation to alanine aminotransferase (ALT), HBV deoxyribonucleic acid (HBV-DNA), hepatitis B envelope antigen (HBeAg), and HBV surface antigen (HBsAg) in the development of chronic hepatitis B (CHB).@*Methods@#Thirteen healthy individuals (HI), 30 chronic HBV-infected patients in immune tolerant (IT) phase, and 55 CHB patients were enrolled between August 2015 and May 2017. The peripheral blood samples were collected from all individuals. The levels of interferon (IFN)-α2, interleukin (IL)-10, transforming growth factor (TGF)-β1, HBV-DNA, HBsAg, and HBeAg and liver function were measured. The quantitative determinations of cytokines levels, including IFN-α2, IL-10, and TGF-β1 were performed using Luminex multiplex technology. The correlation of cytokines to ALT, HBV-DNA, HBsAg, and HBeAg was analyzed by linear regression analysis.@*Results@#IFN-α2 levels were similar between HI and IT groups (15.35 [5.70, 67.65] pg/ml vs. 15.24 [4.07, 30.73] pg/ml, Z = -0.610, P = 0.542), while it elevated significantly in CHB group (35.29 [15.94, 70.15] pg/ml vs. 15.24 [4.07, 30.73] pg/ml; Z = -2.522, P = 0.012). Compared with HI group (3.73 [2.98, 11.92] pg/ml), IL-10 concentrations in IT group (5.02 [2.98, 10.11] pg/ml), and CHB group (7.48 [3.10, 18.00] pg/ml) slightly increased (χ = 2.015, P = 0.365), and there was no significant difference between IT and CHB group (Z = -1.419, P = 0.156). The TGF-β1 levels among HI (3.59 ± 0.20 pg/ml), IT (3.62 ± 0.55 pg/ml), and CHB groups (3.64 ± 0.30 pg/ml) were similar (χ = 2.739, P = 0.254). In all chronic HBV-infected patients (including patients in IT and CHB groups), the elevation of IFN-α2 level was significantly associated with ALT level (β= 0.389, t = 2.423, P = 0.018), and was also negatively correlated to HBV-DNA load (β = -0.358, t = -2.308, P = 0.024), HBsAg (β = -0.359, t = -2.288, P = 0.025), and HBeAg contents (β = -0.355, t = -2.258, P = 0.027). However, when both ALT level and cytokines were included as independent variable, HBV-DNA load, HBsAg, and HBeAg contents were only correlated to ALT level (β = -0.459, t = -4.225, P = 0.000; β = -0.616, t = -6.334, P = 0.000; and β = -0.290, t = -2.433, P = 0.018; respectively).@*Conclusions@#IFN-α2 elevation was associated with ALT level in patients with chronic HBV infection. However, in CHB patients, only ALT level was correlated to HBV-DNA, HBsAg and HBeAg contents.

Plasmacytoid Dendritic Cell Function and Cytokine Network Profiles in Patients with Acute or Chronic Hepatitis B Virus Infection / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Plasmacytoid dendritic cells (pDCs) and cytokines play an important role in occurrence and recovery of hepatitis B virus (HBV) infection. The aim of this study was to explore the frequency and function of pDC and serum cytokine network profiles in patients with acute or chronic HBV infection.</p><p><b>METHODS</b>The healthy individuals (HI group), hepatitis B envelope antigen (HBeAg)-positive chronic HBV patients in immune tolerance (IT) phase (IT group), HBeAg-positive chronic HBV patients (CHB group), and acute HBV patients (AHB group) were enrolled in this study. The frequency of cluster of differentiation antigen 86 (CD86) + pDC and the counts of CD86 molecular expressed on surface of pDC were tested by flow cytometer. The quantitative determinations of cytokines, including Fms-like tyrosine kinase 3 ligand (Flt-3L), interferon (IFN)-α2, IFN-γ, interleukin (IL)-17A, IL-6, IL-10, transforming growth factor (TGF)-β1 and TGF-β2, were performed using Luminex multiplex technology.</p><p><b>RESULTS</b>In this study, there were 13 patients in HI group, 30 in IT group, 50 in CHB group, and 32 in AHB group. Compared with HI group, HBV infected group (including all patients in IT, CHB and AHB groups) had significantly higher counts of CD86 molecular expressed on the surface of pDC (4596.5 ± 896.5 vs. 7097.7 ± 3124.6; P < 0.001). The counts of CD86 molecular expressed on the surface of pDC in CHB group (7739.2 ± 4125.4) was significantly higher than that of IT group (6393.4 ± 1653.6, P = 0.043). Compared with IT group, the profile of cytokines of Flt-3L, IFN-γ, and IL-17A was decreased, IFN-α2 was significantly increased (P = 0.012) in CHB group. The contents of IL-10, TGF-β1, and TGF-β2 in AHB group were significantly increased compared with IT and CHB groups (all P < 0.05).</p><p><b>CONCLUSIONS</b>This study demonstrated that the function of pDC was unaffected in HBV infection. The enhanced function of pDC and IFN-α2 might involve triggering the immune response from IT to hepatitis active phase in HBV infection. Acute patients mainly presented as down-regulation of the immune response by enhanced IL-10 and TGF-β.</p>

Clinicopathology, immunophenotype, T cell receptor gene rearrangement, Epstein-Barr virus status and p53 gene mutation of cutaneous extranodal NK/T-cell lymphoma, nasal-type / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Extranodal natural killer/T-cell (NK/T cell) lymphoma, nasal-type, is a rare lymphoma. Skin is the second most common site of involvement after the nasal cavity/nasalpharynx. The aim of this study was to investigate the clinicopathologic features, immunophenotype, T cell receptor (TCR) gene rearrangement, the association with Epstein-Barr virus (EBV) infection and p53 gene mutations of the lymphoma.</p><p><b>METHODS</b>The clinicopathologic analysis, immunohistochemistry, in situ hybridization for EBER1/2, TCR gene rearrangement by polymerase chain reaction (PCR), mutations of p53 gene analyzed by PCR and sequence analysis were employed in this study.</p><p><b>RESULTS</b>In the 19 cases, the tumor primarily involved the dermis and subcutaneous layer. Immunohistochemical staining showed that most of the cases expressed CD45RO, CD56, CD3ε, TIA-1 and GrB. Three cases were positive for CD3 and two cases were positive for CD30. Monoclonal TCRγ gene rearrangement was found in 7 of 18 cases. The positive rate of EBER1/2 was 100%. No p53 gene mutation was detected on the exon 4 - 9 in the 18 cases. Fifteen cases showed Pro (proline)/Arg (arginine) single nucleotide polymorphisms (SNPs) on the exon 4 at codon 72. The expression of p53 protein was 72% (13/18) immunohistochemically.</p><p><b>CONCLUSIONS</b>Cutaneous NK/T-cell lymphoma is a rare but highly aggressive lymphoma with poor prognosis. No p53 gene mutation was detected on the exon 4 - 9, and Pro/Arg SNPs on p53 codon 72 were detected in the cutaneous NK/T-cell lymphoma. The overexpression of p53 protein may not be the result of p53 gene mutation.</p>

Effect of Transcranial Magnetic Stimulation Combined with Acupuncture Point Injection on Mental Retardation at Early Stage / 中国康复理论与实践

@#Objective To explore the effect of transcranial magnetic stimulation combined with acupuncture point injection on children with mental retardation at early stage. Methods 120 children with mental retardation were divided four groups: groups Ⅰ, Ⅱ, Ⅲ, and Ⅳ, 30 cases in each group including 10 mild, 10 moderate and 10 severe, respectively. Group Ⅰ received intelligence training by their parents. Group Ⅱ was treated by transcranial magnetic stimulation and intelligence training. Group Ⅲ was treated by acupuncture point injection of monosialotetrahexosylganglioside and intelligence training. Group Ⅳ was treated by transcranial magnetic stimulation, acupuncture point injection of monosialotetrahexosylganglioside and intelligence training. 3 months was a course. DQ of 4 groups was tested by Gesell Development Scale before and after the treatment. The effective rate and different intelligence levels of 4 groups were compared. Results DQ of mild vs. severe and moderate vs. severe improved significantly in group Ⅱ, Ⅲ and Ⅳ (P<0.01). The DQ of moderate vs. severe improved very significantly in group Ⅳ (P<0.01). Conclusion Transcranial magnetic stimulation combined with acupuncture point injection may facilitate to improve the intelligence level of children with mild and moderate mental retardation.

[Content variation of saponins and flavonoids from growing and harvesting time of Glycyrrhiza uralensis].

OBJECTIVE: Determining and comparing the saponins and flavonoids contents in Glycrrrhiza uralensis Fisch to know theObjective: Determining and comparing the saponins and flavonoids contents in Glycyrrhiza uralensis Fisch to know the dynamic variation. METHODS: The contents were determined by ultraviolet spectrophotometry. RESULTS: Two contents had basically theMethods:The contents were determinedby ultraviolet spectroihotometry. Results: Two contents had basically the same change cultivated in Gansu and Inner Mongolia. CONCLUSION: The plant 3-year cultivated has the highest content. Having high con-same change cultivated in Gansu and Inner Mongolia. Conclusion:The plant 3-year cultivated has the highest content. Having high content of Saponins in August and flavonoids in May and October which can be used as the basis for harvesting and processing.