This study was aimed to find the fragmentation pathways of Schisandrin B using the Discovery Studio by electrospray ionization mass spectrometry (ESI-MSn). The first and multi-stage mass spectrum diagrams were obtained. The results showed that mass spectrometry fragments of Schisandrin B was analyzed under the positive mode, the cracking rings are mainly occurred, and free radicals such as H2O, -CH3 and -OCH3 were lost. It was concluded that this study enriched the mass spectral decomposition, and provided basis for the study on chemical constituents of lignan compounds.

Objective To investigate the clinicopathologic characteristics and prognosis of triple negative breast cancer patients. Methods A retrospective analysis was performed for 1042 primary breast cancer patients admitted in the First Affiliated Hospital of Nanjing Medical University from January 2003 to December 2009.All breast cancer patients were categorized into three subgroups by immunohistochemistry:ERBB2 +,HR +/ERBB2 - and triple negative. Results Of 1042 breast cancer patients recruited,183 patients were in triple negative group.The rate of larger tumors ( greater than 2 cm in diameter) and grade Ⅲ in triple negative patients was higher than that in ERBB2 + and HR +/ERBB2 - patients (P ＜0.01 ).The positive rate of p53 status in ERBB2 + patients was higher than that in triple negative and HR +/ERBB2- patients (P ＜ 0.01 ).No significant differences were observed in other clinical variables.In survival analysis,more bone metastases were observed in HR +/ERBB2 - patients than in ERBB2 + and triple negative patients (P =0.006).However,no significant difference was observed in visceral metastases among the subgroups.There were significantly different recurrence-free survivals (RFS) among the three subgroups throughout the follow-up period ( P =0.029),the 5-year RFS of ERBB2 + was 80.3％,which was the worst in three groups. Conclusions Triple negative patients had higher rate of larger tumors (greater than 2 cm in diameter) and grade Ⅲ than that in ERBB2 + and HR +/ERBB2 - patients,while its 5-year RFS was higher than ERBB2 + patients.

Objective: To compare the performance of Miseq and Ion Torrent PGM platforms and library construction method for next-generation sequencing (NGS) technology for formalin-fixed and paraffin-embedded (FFPE) samples. Methods: A total of 204 FFPE cancer samples including 100 non-small cell lung cancers at the First Affiliated Hospital of Zhejiang University, and 104 colorectal cancers at West China Hospital of Sichuan University were retrospectively selected from January 2013 to December 2016. By using the same samples, DNA was extracted, and the same amount of DNA was used for library construction with the same kit, and sequenced on Miseq and Ion Torrent PGM respectively, after passing the quality control. Any discordant mutations between two platforms were validated by amplified refractory mutation system-polymerase chain reaction (ARMS-PCR) method and Sanger sequencing. Results: A total of 204 FFPE samples were included and 197 samples were successfully analyzed by both platforms. The number of reads generated by the samples on Miseq platform sequencing was higher than PGM platform (median 391 634 vs. 298 030, P<0.01). Alignment with human reference genome showed that the mapping rate of Miseq platform was higher than PGM platform (median 100.0% vs. 99.7%, P<0.01). The median sequence depth of samples on Miseq was higher than PGM platform (median 853× vs. 698×, P<0.01). A total of 236 mutations were detected by two platforms, of which 221 were detected on both platforms, with a 93.6% concordance. Miseq platform detected 11 mutations not detected on PGM platform, while PGM platform detected 4 more mutations not detected on Miseq platform. With validation by ARMS-PCR and Sanger sequencing, Miseq platform was more reliable for low-frequency mutations. The main reasons for the discordant mutations between two platforms were that mutation frequency on undetected platform was lower than mutation reporting range (5%) and FFPE samples were stored for a long time. Conclusions Compared with PGM, Miseq platform shows higher sequencing quality in terms of the number of reads, alignment results and coverage depth, and the test results are more reliable. In clinical practice, the appropriate platform should be chosen based on sample size and actual throughput requirements to aid in the molecular characterization of tumors.

Objective:To investigate the clinical therapeutic effect of ultrasound-guided paravertebral nerve block combined with platelet rich plasma (PRP) injection on patients with postherpetic neuralgia (PHN).Methods:Sixty PHN patients diagnosed at the First Affiliated Hospital of Bengbu Medical University from August 2023 to June 2024 were selected and randomly divided into a control group and an observation group using a random number table. The control group received ultrasound-guided paravertebral nerve block, while the observation group received PRP injection in addition to the control group. The two groups were compared before treatment (T 0), 1 week after treatment (T 1), 2 weeks after treatment (T 2), 3 weeks after treatment (T 3), 4 weeks after treatment (T 4), and 8 weeks after treatment (T 5), pain Visual Analogue Scale (VAS), Pittsburgh Sleep Quality Index (PSQI), Dermatology Quality of Life Index (DLQI) scores, and incidence of adverse reactions at each time point. Results:The pain VAS, PSQI, and DLQI scores of both groups of patients at T 1, T 2, T 3, T 4, and T 5 time points were reduced compared to T 0, and the pain VAS, PSQI, and DLQI scores of the observation group at T 1 to T 5 time points were lower than those of the control group (all P<0.05). The incidence of adverse reactions in the control group was 26.6%(8/30), while in the observation group it was 6.6%(2/30), with a statistically significant difference between the two groups (χ 2=4.320, P<0.05). The total effective rate of the control group [70.0%(21/30)] was lower than that of the observation group [93.3%(28/30)], with a statistically significant difference between the two groups (χ 2=5.454, P<0.05). Conclusions:The combined application of ultrasound-guided paravertebral nerve block and PRP injection for the treatment of PHN can significantly alleviate patients′ pain symptoms, improve their sleep and quality of life, with relatively few side effects and high safety.

Penicillium decumbens T. is an important filamentous fungus for the production of cellulases to effectively degrade lignocellulose for second generation biofuel production. In order to enhance the capability of Penicillium decumbens to produce cellulases, we constructed a creB (a deubiquitinating enzyme encoding gene) deletion cassette, and generated a creB knockout strain with homologous double crossover recombination. This mutation resulted in a detectable decrease of carbon catabolite repression (CCR) effect. The filter paper activity, endoglucanase activity, xylanase activity and exoglucanase activity of the deltacreB strain increased by 1.8, 1.71, 2.06 and 2.04 fold, respectively, when comparing with the parent strain Ku-39. A 2.68 fold increase of extracellular protein concentration was also observed. These results suggest that the deletion of creB results in CCR derepression. These data also suggest that CREB influences cellulase production of Penicillium decumbens. In generation, this study provides information that can be helpful for constructing cellulase hyper-producing strain.
Cellulase ; biosynthesis ; Endopeptidases ; genetics ; metabolism ; Gene Knockout Techniques ; Lignin ; metabolism ; Mutant Proteins ; metabolism ; Penicillium ; enzymology ; genetics ; Recombination, Genetic ; Ubiquitinated Proteins ; genetics ; Ubiquitination

Objective: To explore the occurrence, clinical characteristics, diagnosis and treatment of glomerulitis after allogeneic hematopoietic stem cell transplantation (allo-HSCT). Methods: Analysis were carried out based on the clinical data of 6 patients with de novo glomerulitis following allo-HSCT hospitalized in Henan Tumor Hospital from January 2008 to December 2016, and the clinical manifestation, pathology, diagnosis, treatment and outcome were investigated. Results: The occurrence of glomerulitis was 1.26% (6/478). The median time was 447(272-1 495) d after allo-HSCT. Proteinuria and varying degrees of edema were present in all patients. Of the 6 patients, 4 patients with impaired renal function, 3 cases of hypertension, 5 cases of urine occult blood positive, 2 cases of hyperlipidemia. 5 patients underwent acute graft-versus-host disease (GVHD), 4 patients accompanied with chronic GVHD at diagnosis. Kidney pathology showed typical features of minimal change diseases in 1 patient, membranous nephropathy in 4 patients and mesangial proliferative glomerulonephritis in 1 case. Immunohistochemistry of glomerular lesions revealed that the immune complex deposition included IgG in 4 patients, C3 in 3 patients, IgM and C1q in 1 patient. Serum ANA was positive in 2 patients and serum IgG and IgM were in high level in 1 patient, respectively. Only 1 case was effective on glucocorticoid. 5 cases treated by low dose cyclophosphamide combined with mycophenolate mofetil (MMF), 2 cases achieved complete remission, and 3 cases were partial remission. Up to now, 2 cases died with lung infection, and 4 patients survived. Conclusion The predominant pathological type of glomerulitis was membranous nephropathy. Low-dose cyclophosphamide combined with MMF was an effective treatment.

Objective:To optimize the extraction process of the water extract of Zhenwutang and study on the preparation of gran -ule of Zhenwu decoction to provide reference for the development and utilization of Zhenwutang granule .Methods: Heating refluxing was used, and the effects of the ratio of solid to liquid , extraction time and times were investigated by orthogonal test .As the synthetic indices of evaluation , the yield of extraction and the contents of paeoniflorin and benzoylmesaconine measured by HPLC were deter -mined to confirm the optimal water extraction process of Zhenwutang granule .Besides, granularity pass rate, moisture, loss on drying, solubility and angle of repose of the granule were regarded as the indices to evaluate the best ratio of the excipients in the preparation of the granule by single factor test.Results:Paeoniflorin and benzoyl mesaconitine had good linearity within the range of 5.45-32.70μg (r=0.9996) and 3.24-16.80 μg(r=0.9997), respectively.The average recovery was 99.62％ (RSD =1.34％ , n=6) and 1017.2 ％(RSD=1.74％, n=6), respectively.The optimum extraction process was as follows :the ratio of solid to liquid was 1:12 with twice refluxing extraction ( 2h for each time) .The optimum granule forming process was as follows:the pharmaceutical excipients were a mixture of dextrin and soluble starch with the best ratio of 1:3. The granularity pass rate , moisture, loss on drying, solubility and angle of repose of the granule was94 .12％ ,4.87 ％, 0.93％,89 .23％ and 36.18°, respectively.Conclusion:The optimized re-fluxing extraction process is stable , reliable and feasible , and the prepared granule is in good formability and melting .

Objective:To explore the clinical value of extra-long subcutaneous tunnel ventricular drainage in patients with hydrocephalus.Methods:From March 2016 to March 2020, 33 patients who were not suitable for ventriculoperitoneal shunt, who would have expected time of external ventricular drainage longer than 7 d, who had external ventricular drainage reaching for 7 d and still could not expect for drainage tube drawing for the next 7 d, or who had hydrocephalus after external ventricular drainage were chosen in our study. These patients accepted extra-long subcutaneous tunnel ventricular drainage. The curative effects in the patients were analyzed retrospectively.Results:The drainage tube was kept for a maximum of 24 months and the shortest time was 13 d, with average of 69.3 d; 32 patients (97%) had drainage time longer than 14 d. There was no secondary infection after operation.Conclusion:Extra-long subcutaneous tunnel extraventricular drainage tube has a long duration of catheter placement, could avoid multiple drainage and secondary intracranial infection, so it is a safe and effective new technology for hydrocephalus.

With the continuous development of healthcare industry,hospital publicity plays a pivotal role in brand con-struction,image shaping,and fostering harmonious doctor-patient relationships.This article highlights the strategic approach of The First Affiliated Hospital/School of Clinical Medicine of Guangdong Pharmaceutical University to bolstering its correspondent team and enhancing its publicity efforts.By establishing a"1+2+3"working system--one principle,two systems,and three types of training--the goal is to build a correspondent team that is politically steadfast,high-quality,and dedicated.From 2021 to 2023,the hospital has witnessed a notable improvement in submissions from the correspondents.These advancements have not only elevated the hospital's media output but also significantly contributed to the broader dissemination of its publicity materials and the advancement of its brand identity.These efforts support the favorable development of news and public opinion within the health industry.

In this study, the mature peptide sequence of a pectin lyase gene A was amplified from Aspergillus niger strain EIM-6 by using RT-PCR reverse transcription technique. The cloned gene was then inserted into a Pichia pastoris expression vector pPIC9k to produce the recombinant expression plasmid pPIC9K-pelA. By using electric shocks, we successfully transformed the recombinant pPIC9K-pelA into Pichia pastoris GS115. The activity of the engineered strain reached to 2.3 U/mL after induction with the final concentration of 1.5% methanol. SDS-PAGE analysis revealed that the pPIC9K-pelA transformant had an additional protein band of approximately 38 kD, which was not present in the control. There were no significant differences between the recombinant and native pectin lyase with regard to their hydrolysis activities.
Aspergillus niger ; enzymology ; genetics ; Electroporation ; Pichia ; genetics ; metabolism ; Polysaccharide-Lyases ; biosynthesis ; genetics ; Recombinant Proteins ; biosynthesis ; genetics ; Reverse Transcriptase Polymerase Chain Reaction