Experimental study of en-bloc resection of bladder tumors by transurethral single-port laparoscopy in vivo animal models / 现代泌尿外科杂志

【Objective】 To explore the feasibility of en-bloc resection of bladder tumors by flexible cystoscope combined with laparoscopic instruments through urethra and to provide reference for the clinical application of this technique. 【Methods】 Self-designed and processed transurethral single-hole PORT and Olympus electronic cystoscope were used as observation mirror; Φ1.8 mm soft grasper, tissue scissors, electric hook, and ultrasonic scalpel were used as instruments; the porcine bladder was used as a model.The PORT was placed through the urethra, and the cystoscope was inserted to observe the inner wall of the bladder and the condition of the mucosa.After the lesion site was identified in the bladder cavity, the soft grasper was inserted to pull the mucosa to be removed, which was then fixed with tension at the target position to maintain a satisfactory feild of view.The surgeon held the cystoscope in the left hand, and operated the laparoscopic instruments into the bladder cavity through the PORT with the right hand.Observing with the cystoscope and lifting and pulling the mucosa with the grasper, the surgeon simulated the cutting and pushing actions to realize the en-bloc resection of the lesioned mucosa. 【Results】 The mucosa at 4 different locations were successfully resected on 2 in vitro porcine bladder models. 【Conclusion】 The in vitro experiments show that the combination of flexible electronic cystoscope and laparoscopic instruments achieves synergistic effects in en-bloc resection of bladder tumor by transurethral single-hole laparoscope without additional iatrogenic bladder injury caused by percutaneous bladder incision.This method is feasible in the treatment of bladder tumors, and has the potential of clinical application after further optimization.

Neurobehavioral effects of long term mild hypothermia combined with compound porcine cerebroside and ganglioside injection after traumatic brain injury in rats / 安徽医科大学学报

Objective @#To investigate the neurobehavioral effects of long term mild hypothermia (MHT) combined with compound porcine cerebroside and ganglioside inj ection (CPCGI) after traumatic brain inj ury (TBI) in rats and its mechanism. @*Methods @#36 healthy adult male SD rats were randomly divided into model group , MHT group , CPCGI group and MHT + CPCGI group . The TBI model was prepared using an electronically controlled cortical in j ury device . The rats in model group received an intraperitoneal inj ection of an equal amount of normal saline (NS , 2 ml/kg) and were treated at room temperature (37 ℃) for 48 hours . The rats in MHT group received an intraper itoneal inj ection of an equal amount of NS and were treated at a slightly low temperature (33.0 ±1 0) ℃ for 48 hours . The rats in CPCGI group received an intraperitoneal inj ection of an equal amount of CPCGI (0.6 ml/kg) and were treated at room temperature for 48 hours . The rats in MHT + CPCGI group received an intraperitoneal injection of an equal amount of CPCGI and were treated at a slightly low temperature for 48 hours. The sensorimotor function of rats was evaluated by modified Neurological Severity Score ( mNSS) . The motor and spatial memory a bilities of rats were detected by Morris water maze test , and the motor function of rats was evaluated by beam walk ing test (BWT) and inclined grid climbing test. The number of neurons in hippocampus was ob served by Nissl stai ning and immunofluorescence was used to detect the expression of doublecortin (DCX) and neuronal nuclear anti gen antibody (NeuN) . Western blot was used to ob serve the protein expression of B cell lymphoma-2 ( Bcl-2) , Bcl 2 associated X protein ( Bax ) and cysteine proteinase-3 ( Caspase-3) . @*Results @#Compared with MHT group and CPCGI group , MHT + CPCGI group had a lower mNNS score, shorter escape latency , higher times across the platform and the percentage of time in the target quadrant , higher BWT score and larger climbing angle , increased numbers of neurons , DCX and NeuN positive cells , increased Bcl-2 expression and decreased expression of Bax and Caspase-3 . (P < 0.05) . @*Conclusion @#Long-term mild hypothermia combined with CPCGI can effectively improve the neurological deficits of TBI rats by promoting nerve regeneration and inhibiting cell apoptosis , and provide potential strategies and basis for the clinical treatment of TBI .

Correlation Analysis Between Anti-cerebral Ischemia Oxidative Damage and Contents of Active Components in Characteristic Processed Products with Porcine Cardiac Blood and Other Processed Products of Salviae Miltiorrhizae Radix et Rhizoma from Menghe Medical School / 中国实验方剂学杂志

ObjectiveTo analyze the correlation between 11 small molecule active components and 1 protein component of characteristic processed products with porcine cardiac blood and other products of Salviae Miltiorrhizae Radix et Rhizoma（SMRR） from Menghe medical school and anti-cerebral ischemic oxidative damage， and to identify its key component markers of characteristic processed products with porcine cardiac blood for anti-cerebral ischemic oxidative damage. MethodHigh performance liquid chromatography（HPLC） was established to simultaneously determine the contents of 11 active ingredients in SMRR and its processed products［processed with porcine cardiac blood， porcine blood， wine and transferrin（Tf） in porcine cardiac blood］， and the content of Tf in different processed products of SMRR was detected by enzyme-linked immunosorbent assay（ELISA）. Furthermore， A zebrafish ischemic stroke model was constructed to evaluate the effects of different processed products of SMRR on the behavioral trajectory of cerebral ischemic zebrafish， the neuronal damage of transgenic zebrafish Tg（elavl3：eGFP） brain， as well as the levels of malondialdehyde（MDA） and superoxide dismutase（SOD） in the brain tissues. The hippocampal neurons oxygen-glucose deprivation/reoxygenation（OGD/R）-induced ischemia-hypoxia model was constructed to evaluate the effects of different processed products of SMRR on oxidative damage of neuronal cells by taking lactate dehydrogenase（LDH）， reactive oxygen species（ROS）， MDA and SOD as indexes. Finally， principal component analysis（PCA）， partial least squares-discriminant analysis（PLS-DA） and Spearman correlation analysis were used to analyze the 11 small molecule active components and 1 protein component with efficacy indicators， in order to screen the key components of the characteristic processed products with porcine cardiac blood for cerebral ischemic oxidative damage. ResultCompared with the raw products， the contents of water-soluble and fat-soluble components in processed products of SMRR increased to different degrees， while the content of salvianolic acid A decreased. Compared with the wine-processed products， the contents of salvianolic acid B， danshensu， rosmarinic acid and other components in the porcine cardiac blood-processed products， porcine blood-processed products， Tf-processed products were increased， while the content of salvianolic acid A was decreased. ELISA results showed that there was no significant difference in Tf content between the porcine cardiac blood-processed products， porcine blood-processed products， Tf-processed products. Pharmacological results showed that different processed products of SMRR could improve the behavioral deficits， brain neuronal injury and oxidative stress after ischemic stroke in zebrafish， and the effect of the porcine cardiac blood-processed products was most pronounced. PCA results showed that salvianolic acid B， salvianolic acid A， rosmarinic acid， lithospermic acid， danshensu， tanshinone ⅡA， caffeic acid， cryptotanshinone and tanshinone Ⅰ were the main contributing components of SMRR and its processed products. And the results of correlation analysis showed that the contents of cryptotanshinone， rosmarinic acid， caffeic acid， dihydrotanshinone Ⅰ， salvianolic acid B， tanshinone ⅡA and tanshinone Ⅰ were negatively correlated with MDA level in zebrafish brain tissue， while the contents of lithospermic acid， protocatechuic aldehyde， rosmarinic acid， dihydrotanshinone Ⅰ， salvianolic acid B and Tf were positively correlated with SOD level， and the contents of rosmarinic acid， caffeic acid， dihydrotanshinone Ⅰ， salvianolic acid B， tanshinone ⅡA， tanshinone Ⅰ， danshensu， Tf were positively correlated with neuronal fluorescence intensity in the zebrafish brain. And the contents of lithospermic acid， protocatechuic aldehyde， rosmarinic acid， dihydrotanshinone Ⅰ， salvianolic acid B， tanshinone ⅡA and Tf were negatively correlated with LDH， ROS and MDA levels and positively correlated with SOD level. ConclusionThere are differences in the anti-ischemic oxidative damage effects of SMRR and its different processed products， among which the porcine cardiac blood-processed products has the strongest effect on improving oxidative damage， which may be related to the content changes of salvianolic acid B， danshensu， rosmarinic acid and other components. This study can provide a basis for clarifying the quality markers of SMRR processed with porcine cardiac blood for cerebral ischemia and elucidating its processing mechanism.

Research progress in porcine reproductive and respiratory syndrome virus and vaccine against it / 中国生物制品学杂志

@#Porcine reproductive and respiratory syndrome(PRRS),also known as blue ear disease,is an immunosuppressive disease caused by porcine reproductive and respiratory syndrome virus(PRRSV). PRRSV is an important infectious pathogen of porcine,which has the characteristics of easy recombination and mutation,high transmission ability,and has been widely spread in the world. At the same time,because of the characteristics of immunosuppression,immune evasion,and easy-to-cause antibody-dependent enhancement(ADE),the pathogen has brought serious challenges to the disease prevention and control of PRRS and the development of related vaccines. In this paper,the pathogenic process of PRRSV,immune evasion mechanism,and research progress in different types of PRRSV vaccines were reviewed,in order to provide ideas for the development of related vaccines in the future

New hope for clinical blood transfusion: xenotransfusion based on gene-edited pigs / 中国输血杂志

Although blood banks based on human blood can provide blood transfusions for the wounded timely and effectively, scientific research has never given up on finding new blood sources due to the restrictions of human blood sources. With the application of transgenic technology and the successful breeding of gene-edited pigs, gene-edited pig blood as a potential source of clinical transfusion has attracted wide attention. Now there are preclinical studies showing the feasibility of transfusing gene-edited pig red blood cells into primates. This paper discusses the related research and future development of xenogeneic transfusion of porcine red blood cells by gene editing.

Ureaplasma diversum-Ureaplasma sp. alone or concomitantly with Mycoplasma hyopneumoniae in pig lungs with and without pneumonia: A descriptive exploratory study in abattoirs / Presencia de Ureaplasma diversum-Ureaplasma sp. solo o junto con Mycoplasma hyopneumoniae en pulmones de cerdos con y sin neumonía: un estudio exploratorio descriptivo en frigorífico

Abstract Occurrence of Ureaplasma diversum (U. diversum) has been associated with repro-ductive failures in cattle and detected in pigs with and without pneumonia. However, its rolein the porcine respiratory disease complex (PRDC) is unclear. A cross-sectional study was con-ducted in abattoirs, inspecting 280 pig lungs from eight herds. All the lungs were inspected,processed and classified according to the histopathological analysis. Moreover, bronchoalveolarlavage (BAL) specimens were collected and processed by PCR for detection of U. diversum andMycoplasma hyopneumoniae (M. hyopneumoniae). Ureaplasma sp.---U. diversum and M. hyop-neumoniae were detected in 17.1% and 29.3% of the analyzed BAL specimens, respectively. Theconcomitant presence of both microorganisms was detected in 12.5% of the inspected lungs.Both agents were found in lungs with and without pneumonia. M. hyopneumoniae was detectedin 31.8% of pig lungs with enzootic pneumonia-like lesions, while Ureaplasma sp.---U. diversumwas detected in 27.5% of lungs with these lesions. This descriptive exploratory study providesinformation for future experimental and field-based studies to better define the pathogenicrole of this organism within the PRDC.

Resumen La presencia de Ureaplasma diversum se ha asociado a fallas reproductivas en el ganado bovino y se ha detectado en cerdos con y sin neumonía. Sin embargo, su participación en el complejo de enfermedades respiratorias porcinas (CERP) no es clara. Se llevó a cabo un estudio transversal en matadero, inspeccionando 280 pulmones de cerdo provenientes de ocho piaras. Todos los pulmones fueron inspeccionados, procesados y clasificados según el análisis histopatológico. También se colectaron muestras de lavado broncoalveolar (LBA) y se procesaron mediante PCR para la detección de U. diversum y Mycoplasma hyopneumoniae. Ureaplasma sp.-U. diversum y M. hyopneumoniae se detectaron en el 17,1% y en el 29,3% de los LBA analizados, respectivamente. La presencia concomitante de ambos microorganismos se detectó en el 12,5% de los pulmones inspeccionados. Ambos agentes se encontraron en pulmones con y sin neumonía. M. hyopneumoniae se detectó en el 31,8% de los pulmones con lesiones compatibles con neumonía enzoótica, mientras que Ureaplasma sp.-U. diversum se detectó en el 27,5% de los pulmones con estas lesiones. Este estudio exploratorio descriptivo proporciona información para futuros estudios experimentales y de campo tendentes a definir mejor el papel patógeno de este organismo dentro del CERP.

Comparative Morphological and Morphometrical Analysis of Atrio-Ventricular Valves of Human and Porcine

There is increased incidence of valvular heart diseases in recent years due to life style modifications. The mortality rates in valvular diseases are kept in pace using various modalities of treatments. One such lifesaving treatment is valve replacement surgeries. These are done by using mechanical valve prosthesis or tissue grafts. The tissue valves prosthesis, harvested from porcine heart are called as xenograft and are increasingly used in valve repair and replacement surgeries. In the present scenario, there is a smaller number of systematically analysed literatures available on the comparative anatomy of human and porcine heart valves. Hence this study was carried out to acquire knowledge and to put forth some points to future research works on heart valves. In this study, 20 formalin fixed porcine and human hearts were procured from slaughter house and cadavers respectively. The morphology and morphometry of tricuspid valve and mitral valve was observed and analysed using spss software 20 version. All the dependent variables were compared using student t test and independent sample test. The results were tabulated and compared. It was observed that the tricuspid and the mitral valve of the porcine resembles the corresponding human heart valves in morphology and morphometry and their values were coinciding to their maximum. The porcine valve resembles human heart valves in morphology and it can be used in designing valve substitutes in replacement surgeries. Porcine valve can also be used as bio-prosthesis by matching the morphometry and by reducing the geometrical difference to their minimum by using any interventional radiology.

Proteomic Research on Characteristic Processing Materials of Porcine Cardiac Blood and Porcine Blood from Menghe Medical School and Their Effect on Anti-microglial Inflammatory Damage of Salviae Miltiorrhizae Radix et Rhizoma / 中国实验方剂学杂志

ObjectiveProteomics was used to investigate the protein differences between porcine cardiac blood（PCB） and porcine blood（PB） from Menghe medical school and to compare the effects of both on the microglial inflammation of Salviae Miltiorrhizae Radix et Rhizoma（DS）. MethodNanoliquid chromatography-quadrupole orbitrap mass spectrometry（nLC-MS/MS） and bioinformatics were utilized to compare the proteomic differences of PCB and PB in simulated gastrointestinal digestion. Furthermore， Western blot was used to verify the contents of some shared proteins and differential proteins identified in PCB and PB. In addition， BV2 neuroinflammation model constructed by corticosterone（CORT） and lipopolysaccharide（LPS） was applied to detect the intervention effects of PCB and PB on the levels of tumor necrosis factor（TNF）-α and interleukin（IL）-6 in BV2 inflammatory cells of DS. ResultA total of 69 common proteins and 68 differential proteins were identified in PCB and PB， among which the common proteins included transferrin（Tf） with brain-targeting effect， and the differential proteins in the two were 41 and 27， respectively. Western blot validation showed that the difference in the content of the same protein Tf between PCB and PB was not statistically significant， while the difference in the contents of the specific proteins of creatine kinase M and heart-type fatty acid binding protein（H-FABP） were statistically significant（P<0.05）. Moreover， in vitro experimental studies revealed that compared with the same concentration of DS group， in addition to the 100 mg·L-1 PB-DS group， PCB-DS and PB-DS groups could significantly inhibit the levels of TNF-α and IL-6 in BV2 inflammatory cells（P<0.05， P<0.01）， and PCB-DS group had more significant anti-inflammatory effect than PB-DS group with the same concentration（P<0.05， P<0.01）. ConclusionBoth of PCB and PB can enhance the inhibitory effect of DS on the release of inflammatory factors， thus playing a neuroprotective role， and PCB promotes DS inhibition more significantly， which may be due to the existence of the two involved in energy metabolism-related differential proteins， which can lay a foundation for revealing the scientific connotation of the processing of PCB-DS and PB-DS.

Study on post-marketing safety of Compound porcine cerebroside and ganglioside injection in the treatment of ischemic stroke / 中国药房

OBJECTIVE To evaluate the post-marketing safety of Compound porcine cerebroside and ganglioside injection in patients with ischemic stroke. METHODS A drug-induced， prospective， non-controlled clinical study design was conducted. Using the patients with ischemic stroke who received Compound porcine cerebroside and ganglioside injection at least once in 46 secondary class A and above medical institutions across the country from April 2020 to May 2021 as the monitoring objects， and their basic data， medication information and the occurrence of adverse drug reactions were analyzed. RESULTS Among 13 514 patients with ischemic stroke， the incidence of adverse events was 10.01%， and the incidence of adverse reactions related to Compound porcine cerebroside and ganglioside injection was 0.33%. Drug-related adverse drug reactions were mild or moderate， concentrated in the gastrointestinal system （18 cases）， skin and subcutaneous tissue （10 cases）， nervous system （7 cases） and other systems/organs， mainly including constipation， abdominal pain， diarrhea， rash， pruritus， dizziness and other symptoms. Most of the patients （91.03%） recovered or improved after treatment， and 2 patients died. Among the 45 patients with adverse drug reactions， 84.44% were cured or improved after drug withdrawal or symptomatic treatment， and 15.56% had no significant change. The incidence of adverse drug reactions in tertiary hospitals was significantly higher than that in secondary hospitals， and the incidence of adverse drug reactions in patients with allergic history was significantly higher than that in patients without allergic history （P＜0.05）. Irrational drug use was found in 2.76% of patients， and the incidence of adverse drug reactions（2.95%） was significantly higher than that in patients without irrational drug use（0.26%，P＜0.05）. CONCLUSIONS The adverse drug reaction symptoms of ischemic stroke patients treated with Compound porcine cerebroside and ganglioside injection are relatively common， the incidence rate is generally low， and it is related to the patients’ physique and whether the drug use is standardized.

Preparation and immunogenicity evaluation of mRNA vaccine against porcine epidemic diarrhea / 生物工程学报

Porcine epidemic diarrhea (PED) is a highly contagious disease that causes high mortality in suckling piglets. Although several licensed inactivated and live attenuated vaccines were widely used, the infection rate remains high due to unsatisfactory protective efficacy. In this study, mRNA vaccine candidates against PED were prepared, and their immunogenicity was evaluated in mice and pregnant sows. The mRNA PED vaccine based on heterodimer of viral receptor binding region (RBD) showed good immunogenicity. It elicited robust humoral and cellular immune responses in mice, and the neutralizing antibody titer reached 1:300 after a single vaccination. Furthermore, it induced neutralizing antibody level similar to that of the inactivated vaccine in pregnant sows. This study developed a new design of PED vaccine based on the mRNA-RBD strategy and demonstrated the potential for clinical application.

Construction of a replicative expression vector based on the porcine circovirus 2 replicon / 生物工程学报

The antigen gene expression level of a DNA vaccine is the key factor influencing the efficacy of the DNA vaccine. Accordingly, one of the ways to improve the antigen gene expression level of a DNA vaccine is to utilize a plasmid vector that is replicable in eukaryotic cells. A replicative DNA vaccine vector pCMVori was constructed based on the non-replicative pcDNA3.1 and the replicon of porcine circovirus 2 (PCV2) in this study. An EGFP gene was cloned into pCMVori and the control plasmid pcDNA3.1. The two recombinant vectors were transfected into PK-15 cell, and the plasmid DNA and RNA were extracted from the transfected cells. Real-time PCR was used to determine the plasmid replication efficiency of the two plasmids using plasmid before and after Bcl Ⅰ digestion as templates, and the transcription level of the Rep gene in PCV2 replicon was detected by RT-PCR. The average fluorescence intensity of cells transfected with the two plasmids was analyzed with software Image J, and the transcription level of EGFP was determined by means of real-time RT-PCR. The results showed that the replication efficiency of pCMVori in PK-15 cells incubated for 48 h was 136%, and the transcriptions of Rep and Rep' were verified by RT-PCR. The average fluorescence intensity of the cells transfected with pCMVori-EGFP was 39.14% higher than that of pcDNA3.1-EGFP, and the transcription level of EGFP in the former was also 40% higher than that in the latter. In conclusion, the DNA vaccine vector pCMVori constructed in this study can independently replicate in eukaryotic cells. As a result, the expression level of cloned target gene was elevated, providing a basis for developing the pCMVori-based DNA vaccine.

Development of porcine induced pluripotent stem cells with a CD163 reporter system / 生物工程学报

As main recipient cells for porcine reproductive and respiratory syndrome virus (PRRSV), porcine alveolar macrophage (PAM) are involved in the progress of several highly pathogenic virus infections. However, due to the fact that the PAM cells can only be obtained from primary tissues, research on PAM-based virus-host interactions remains challenging. The improvement of induced pluripotent stem cells (iPSCs) technology provides a new strategy to develop IPSCs-derived PAM cells. Since the CD163 is a macrophage-specific marker and a validated receptor essential for PRRSV infection, generation of stable porcine induced pluripotent stem cells lines containing CD163 reporter system play important roles in the investigation of IPSCs-PAM transition and PAM-based virus-host interaction. Based on the CRISPR/Cas9- mediated gene editing system, we designed a sgRNA targeting CD163 locus and constructed the corresponding donor vectors. To test whether this reporter system has the expected function, the reporter system was introduced into primary PAM cells to detect the expression of RFP. To validate the low effect on stem cell pluripotency, we generated porcine iPSC lines containing CD163 reporter and assessed the pluripotency through multiple assays such as alkaline phosphatase staining, immunofluorescent staining, and EdU staining. The red-fluorescent protein (RFP) expression was detected in CD163-edited PAM cells, suggesting that our reporter system indeed has the ability to reflect the expression of gene CD163. Compared with wild-type (WT) iPSCs, the CD163 reporter-iPSCs display similar pluripotency-associated transcription factors expression. Besides, cells with the reporter system showed consistent cell morphology and proliferation ability as compared to WT iPSCs, indicating that the edited-cells have no effect on stem cell pluripotency. In conclusion, we generated porcine iPSCs that contain a CD163 reporter system. Our results demonstrated that this reporter system was functional and safe. This study provides a platform to investigate the iPS-PAM development and virus-host interaction in PAM cells.

Efficacy，safety and cost-effectiveness of edaravone dexborneol and compound porcine cerebroside ganglioside in the treatment of acute ischemic stroke / 中国药房

OBJECTIVE To evaluate efficacy， safety and cost-effectiveness of edaravone dexborneol and compound porcine cerebroside ganglioside in the treatment of acute ischemic stroke， and to provide decision-making reference for clinical treatment selection. METHODS The medical records of 488 patients with acute ischemic stroke hospitalized from Jan. 2021 to Dec. 2021 were collected and divided into two groups according to the treatment plan， i.e. 268 patients in edaravone dexborneol group， and 220 patients in compound porcine cerebroside ganglioside group. After baseline levels of the two groups were balanced using propensity score matching method， curative effect was evaluated according to the changes of NIHSS scores before and after treatment； the occurrence of adverse drug reactions in patients were collected from the hospital adverse reaction reporting system； from the perspective of China’s health system， the cost-effectiveness of the two options were analyzed， and one-way sensitivity analysis was conducted. RESULTS After the propensity score matching， 125 patients were included in the edaravone dexborneol group and compound porcine cerebroside ganglioside group， respectively. The response rates were 81.6% and 74.4%， respectively， with no significant difference. The average costs were 13 560.30 yuan and 14 958.68 yuan， respectively； the cost of edaravone dexborneol group was lower than that of compound porcine cerebroside ganglioside group. No adverse reaction reporting information was retrieved in both groups. Results of one-way sensitivity analysis showed that other drug costs in compound porcine cerebroside ganglioside group was relatively sensitive parameters. CONCLUSIONS Short-term efficacy and safety of edaravone dexborneol are equivalent to those of compound porcine cerebroside ganglioside in treating acute ischemic stroke. But edaravone dexborneol regimen had lower cost and is a more economical scheme.

A study on repair method of type Ⅱc injury in lateral meniscus popliteal tendon area of porcine knee / 中国修复重建外科杂志

OBJECTIVE@#To investigate the repair method of type Ⅱc injury in the lateral meniscus popliteal tendon area based on the porcine knee joint.@*METHODS@#Eighteen commercially available fresh porcine knee joints were randomly divided into 3 groups ( n=6). After preparing a type Ⅱc injury in the lateral meniscus popliteal tendon area, and the anterior (group A), posterior (group B), or anterior and posterior (group C) of the popliteal hiatus (PH) was sutured by vertical mattress. The tension meter was used to apply gradient tensions of 2, 4, 6, 8, and 10 N along the tibial plateau horizontally, respectively, to pull the midpoint of the lateral meniscus popliteal tendon area. The displacement values before modeling, after modeling, and after suture were recorded. The reduction value of lateral meniscus displacement and reduction rate after suture were calculated and compared between groups.@*RESULTS@#There was no significant difference between groups ( P>0.05) in the displacement values before modeling, after modeling, and after suture under different tensions. There was no significant difference between groups A and C ( P>0.05) in the reduction value of lateral meniscus displacement and reduction rate after suture under different tensions. The reduction value of lateral meniscus displacement and reduction rate after suture in group B were lower than those in groups A and C. The reduction value of lateral meniscus displacement under tension of 2 N and the reduction rates under tensions of 2, 4, and 6 N between groups A and B showed significant differences ( P<0.05). The reduction value of lateral meniscus displacement and the reduction rate under tensions of 2, 4, and 6 N between groups B and C showed significant differences ( P<0.05).@*CONCLUSION@#Suturing the anterior area of PH is the key to repairing type Ⅱc injury of lateral meniscus popliteal tendon area.

Procine recombinant NK-lysin inhibits hepatocellular carcinoma metastasis by downregulating FKBP3 and inhibiting oxidative phosphorylation and glycolysis: a proteomic analysis / 南方医科大学学报

OBJECTIVE@#To investigate the potential mechanisms that mediate the inhibitory effect of porcine recombinant NKlysin (prNK-lysin) against liver cancer cell metastasis.@*METHODS@#HPLC-tandem mass spectrometry was used to identify the differentially expressed proteins in prNK-lysin-treated hepatocellular carcinoma SMMOL/LC-7721 cells in comparison with the control and PBS-treated cells. GO functional annotation and KEGG pathway analysis of the differentially expressed proteins were performed using GO and KEGG databases. RT-qPCR was used to determine the mRNA expression levels of polypeptide-N-acetylgalactosaminotransferase 13 (GALNT13), transmembrane protein 51 (TMEM51) and FKBP prolyl isomerase 3 (FKBP3) in the cells, and the protein expression of FKBP3 was verified using Western blotting.@*RESULTS@#Proteomic analysis identified 1989 differentially expressed proteins in prNK-lysin-treated cells compared with the control cells, and 2753 compared with PBS-treated cells. Fifteen proteins were differentially expressed between PBS-treated and the control cells, and 1909 were differentially expressed in prNK- lysin group compared with both PBS and control groups. These differentially expressed proteins were involved mainly in the viral process, translational initiation and RNA binding and were enriched mainly in ribosome, protein process in endoplasmic reticulum, and RNA transport pathways. RT-qPCR showed that compared with the control group, prNK-lysin treatment significantly increased the mRNA expressions of GALNT13 (P < 0.05) and TMEM51 (P < 0.01) and lowered FKBP3 mRNA expression (P < 0.05). Western blotting also showed a significantly decreased expression of FKBP3 protein in prNK-lysin-treated cells (P < 0.001).@*CONCLUSION@#Treatment with prNK-lysin causes significant changes in protein expression profile of SMMOL/LC-7721 cells and inhibits hepatocellular carcinoma metastasis by downregulating FKBP3 protein and affecting the cellular oxidative phosphorylation and glycolysis pathways.

Transmission of porcine endogenous retrovirus in xenotransplantation / 器官移植

Organ transplantation is the most effective treatment for various types of end-stage diseases. To resolve the problem of donor shortage in organ transplantation, the possibility of xenotransplantation has been gradually explored by surgeons. Pig is one of the common donor sources for xenotransplantation. As a bridge between two species, the viruses carried by pig organs may be transmitted between species and cause the risk of zoonosis. Porcine endogenous retrovirus (PERV) is integrated into the genome, which is a category of retrovirus featuring cross-species transmission. In this article, the influencing factors of transmission characteristics of PERV, the transmission risk of PERV and its recombinant virus, and the detection and transmission risk assessment of PERV in xenotransplantation test were reviewed, aiming to provide reference for alleviating severe shortage of donor organs and driving the advancement of xenotransplantation technologies.

Effect of Porcine Large Intestine-processed Dahuang （Radix et Rhizoma Rhei） on Defecation and Colon Pathological Changes in Constipation Model Mice / 中医杂志

ObjectiveTo investigate the effect of porcine large intestine-processed Dahuang （Radix et Rhizoma Rhei） on defecation in constipation model mice and the possible mechanism. MethodsFifty Kunming mice were randomized to blank group （n=10） and model group （n=40）. Loperamide suspension at the dose of 8 mg/（kg·d） was given by gavage for four consecutive days to establish a model of constipation. The 24 successfully modeled mice were randomly divided into model group， processed Dahuang group， lactulose group， raw Dahuang group， with six mice in each group. Moreover， six randomly selected mice were chosen as control group. Since the fifth day， 8 mg/（kg·d） of loperamide suspension by gavage was given to the model group， processed Dahuang group， raw Dahuang group， and lactulose group； two hours later， the processed and raw Dahuang groups were administered with 0.6 g/（kg·d） of processed and raw Dahuang suspension， respectively， while the lactulose group was given 0.6 g/（kg·d） of latulose suspension， and the blank group and the model group were given 0.2 ml/10 g of distilled water by gavage， all for four days. The general condition， body weight after the last gavage， number of fecal particles within six hours， fecal wet weight， fecal water content ratio， intestinal propulsion rate and colonic histology changes by HE staining of each group were detected. ResultsThe body weight of the mice in the raw Dahuang group was significantly lighter than that in the other groups （P＜0.05 or P＜0.01）. The number of fecal particles， fecal wet weight and intestinal propulsion rate of mice significantly decreased in the model group than in the blank group （P＜0.05 or P＜0.01）. Compared to those in the model group， the number of fecal particles and fecal wet weight in the processed Dahuang group， lactulose group and raw Dahuang group significantly increased， and the fecal water content ratio in the raw Dahuang group increased as well （P＜0.05 or P＜0.01）. Compared to those in the processed Dahuang group， the number of fecal particles and fecal wet weight in the raw Dahuang group decreased， while the fecal water content ratio increased （P＜0.05 or P＜0.01）， and the fecal water content ratio in the lactulose group increased significantly （P＜0.05）. The intestinal propulsion rate in the processed Dahuang group was higher than that in the model group， lactulose group and raw Dahuang group （P＜0.05 or P＜0.01）. Histopathological analysis showed that the colonic crypts and goblet cells in the blank group were normal and clear， and the colonic muscular layer was thicker. The colonic crypts of the mice in the model group were damaged， with reduced goblet cells to varying degrees and changed colonic muscularis. In the lactulose group and raw Dahuang group， part of the crypts were broken， and the goblet cells were damaged to varying degrees， while in the processed Dahuang group， still the colonic tissue structure of the mice was relatively clear， and the colonic crypts and goblet cells were relatively normal， with thickened muscular layer of the colon. ConclusionPorcine large intestine-processed Dahuang could improve defecation in constipation model mice， and reduce the drastic purgation function of raw Dahuang， for which the mechanism may be related to the protection of colon histopathological damage.

Long-term clinical value of composite biomaterial mesh in inguinal hernia repair: a multi-center prospective randomized controlled study / 中华消化外科杂志

Objective:To investigate the long-term clinical value of composite biomaterial mesh in inguinal hernia repair.Methods:The prospective randomized controlled non-inferiority study was conducted. The clinical data of 172 adult patients with inguinal hernia who were admitted to 3 medical centers, including Huadong Hospital Affiliated to Fudan University et al, from July 2014 to February 2015 were selected. Based on random number table, patients were divided into two groups. Patients underwent technique of abdominal wall reinforcement with biological mesh. Patients using the electrospun composite biomaterial mesh were allocated into experimental group, and patients using the small intestinal submucosa mesh were allocated into control group. Observation indicators: (1) grouping situations of the enrolled patients; (2) endpoint of the study. Measurement data with normal distribution were represented as Mean± SD, and comparison between groups was conducted using the independent sample t test. Count data were described as absolute numbers or percentages, and comparison between groups was conducted using the chi-square test or Fisher exact probability. Comparison of ordinal data was conducted using the non-parameter rank sum test. Taking the recurrence rate of hernia at 6 years after surgery as the basis of efficacy evaluation, the Cochran-Mantel-Haenszel test was used for comparison between groups. The confidence interval method was used to conduct non-inferiority statistical analysis. If the lower limit of 95% confidence interval of the difference of recurrence rate of hernia between the experiment group and the control group was more than -10%, the experiment group was considered to be non-inferior to the control group. If the lower limit of 95% confidence interval is more than 0, the experiment group was considered to be superior to the control group. Results:(1) Grouping situations of the enrolled patients. A total of 172 adult patients with inguinal hernia were selected for eligibility. They were males, aged (61±2)years. All 172 patients were randomly divided into to the experimental group and the control group with 86 cases in each group. At 6 years after surgery, 20 patients in the experi-mental group and 19 patients in the control group was lost to follow-up. (2) Endpoint of the study. ① The primary endpoint of study. At 6 years after surgery, no patient had recurrence in the 66 patients of experimental group and 4 patients had recurrence in the 67 patients of control group. Results of non-inferiority statistical analysis showed that the 95% confidence interval of the difference of recurrence rate of hernia between the two groups was 0.27% to 14.41%, with the lower limit as 0.27%, which was more than -10% and simultaneously more than 0. ② The secondary endpoint of study. There was no significant difference in the simple verbal scale between the two groups after 6 months and 6 years at rest or cough status ( P>0.05). At a follow-up of 6 months after surgery, 2 cases of the experimental group and 5 patients of the control group had complications, showing no significant difference between the two groups( χ2=1.38, P>0.05). At a follow-up of 6 years after surgery, no complication occurred in either group. Conclusion:Composite biological mesh in inguinal repair is safe and feasible, which can have low long-term recurrence and achieve good long-term efficacy.

Effect of different immune induction therapies on early clinical outcomes of ABO-incompatible kidney transplantation recipients of living relative donor / 中华器官移植杂志

Objective:We employ different regimens of induction therapy in living donor ABO-incompatible kidney transplantation(ABOi-KT) recipients to compare their clinical outcomes during 6 months post-KT.Methods:A retrospective analysis was conducted for the relevant clinical data of 41 ABOi-KT recipients from June 2018 to September 2022.Thirteen recipients on induction therapy of anti-human T lymphocyte porcine immunoglobin(pATG)were enrolled in pATG group; 19 recipients on induction therapy of basiliximab in basiliximab group; 9 recipients on induction therapy of rabbit anti-human thymocyte immunoglobulin(rATG)in rATG group.Differences in age, gender, body mass index(BMI), dialysis modality/duration, sideness of donor kidney, frequency of blood group antibody treatment, dose of rituximab, basic blood group antibody titers of IgG/IgM, and the gender and BMI of recipient's donor were compared for three groups.Immune status was assessed by comparing absolute lymphocyte count before pre-treatment and within 6 months post-KT in recipients under different induction regimens among 3 groups by one-way analysis of variance.Transplant kidney function was assessed by comparing the levels of serum creatinine, estimated glomerular filtration rate(eGFR)and serum urea nitrogen using one-way analysis of variance.The incidence of delayed graft function(DGF), acute rejection(AR)and infection was compared among three groups.Results:Regarding baseline profiles, except for donor age pATG group[(60.23±6.10)years]versus basiliximab group[(51.95±6.97)years]was statistically significant( P=0.002), the differences in the remaining parameters were not statistically significant among three groups(all P>0.05). At Day 1/3/7/10/14 post-KT, absolute lymphocyte counts were(0.17±0.07)×10 9/L, (0.27±0.14)×10 9/L, (0.85±0.40)×10 9/L, (1.05±0.56)×10 9/L and(1.10±0.56)×10 9/L in pATG group and(0.69±0.04)×10 9/L, (0.18±0.21)×10 9/L, (0.57±0.44)×10 9/L, (0.67±0.45)×10 9/L and(0.81±0.46)×10 9/L in rATG group respectively.They were all higher than those in basiliximab group[(0.46±0.18)×10 9/L, (0.67±0.26)×10 9/L, (1.29±0.48)×10 9/L, (1.56±0.49)×10 9/L, (1.75±0.53)×10 9/L]and the differences were statistically significant(all P<0.05). No statistically significant difference existed in absolute lymphocyte count among 3 groups before pre-treatment and after Day 21 post-KT(all P>0.05). At Week 1/2/4/12/24 post-KT, the differences in serum levels of creatinine and urea nitrogen were not statistically significant( P>0.05). At Month 1/3 post-KT, eGFR was(47.24±14.51)and(49.94±14.31)ml·min -1·(1.73 2) -1 in rATG group and they were lower than(67.36±21.60)and(65.00±14.67)ml·min -1·(1.73 2) -1 in basiliximab group with a statistically significant difference( P<0.05). However, at Week 1/2/24 post-KT, no statistically significant difference existed in eGFR among 3 groups( P>0.05). In ATG, basiliximab and rATG groups, DGF(1 case, 1 case, 1 case), AR(2 cases, 2 cases, 1 case)and infection(4 cases, 7 cases, 3 cases)occurred during 6 months post-KT. Conclusions:Through a limited sample of single centers, no statistically significant difference existed in graft function recovery for ABOi-KT recipients on induction therapies of pATG, basiliximab and rATG.And DGF, AR and infections occurred in all three groups.However, there were little inter-group differences.

Optimization of the formulation of a porcine fibrin patch / 中国药房

OBJECTIVE To optimize the formulation of a porcine fibrin patch （abbreviated as “DBT”）. METHODS Based on single-factor tests， with the contents of fibrinogen， thrombin and collagen before freeze-drying as the factors， with the overall desirability （OD） value of adhesion strength， holding viscosity and water absorption as response value， the formulation of DBT was optimized by Box-Behnken-response surface methodology， and the verification tests were conducted. RESULTS According to the results of the single factor tests and Box-Behnken-response surface methodology， combined with the actual production， the optimal formulation of DBT was 6.5 mg/cm2 of fibrinogen， 8.0 IU/cm2 of thrombin and 5.6 mg/mL of collagen. The average OD value of 3 validation tests was 0.726 6 （RSD＝0.58%， n＝3）， and the relative error of which with the predicted value （0.733 0） was －0.87%. CONCLUSIONS The optimal formulation of DBT is stable and feasible.