Objective To explore the feasibility of magnetic compression technique (MCR) in the treatment of severe single mid-ureteral stricture in a rabbit model. Methods After 10 female New Zealand rabbits were selected, the distal end of the right ureter was ligated with silk thread. Two weeks after the operation, when the right ureter was dilated, the mid-ureter was ligated again with silk thread to create a severe single mid-ureteral stricture animal model. Longitudinal incisions were made at the upper and lower ends of the ligation site, and cylindrical NdFeB magnets with central holes (sub-magnets and main magnets) were placed to anastomose and recanalize the mid-ureteral stricture. The magnets were adjusted to the appropriate position to automatically align and attract each other. The longitudinal incision sites of the ureter were sutured with 6-0 Prolene thread, and the abdominal cavity was closed layer by layer. The operation time was recorded. X-ray films were taken every two days to confirm the position of the magnets and record the time of magnet detachment. Three weeks after the operation, the anastomotic specimens were obtained, and the formation of the anastomosis was evaluated with gross observation and histological staining. Results Two weeks after ligation, all experimental rabbits showed obvious dilation of the right ureter. The mid-ureteral ligation and placement of the male and female magnets were successfully completed in all 10 experimental rabbits, with an operation time of (24.00±5.15)minutes. The male and female magnets attracted each other well. X-ray examination showed that the magnets detached and entered the distal ureter (14.0±1.9) days after magnetic compression. The recanalization of the severe single mid-ureteral stricture was successfully achieved. The gross specimens and histological examination of the anastomosis showed that the anastomosis remained patent and the mucosal healing was good. All experimental rabbits survived well after the operation without serious complications. Conclusion MCT provides a new idea and novel method for the treatment of mid-ureteral stricture. This study confirmed the feasibility of this technique in treating severe single mid-ureteral stricture in a rabbit model. The operation is relatively simple and has potential for clinical application.

[Objective] To explore the clinical features of IgG4-related urinary diseases so as to provide reference for the diagnosis and treatment of such diseases. [Methods] The clinical data of 4 cases of IgG4-related urinary system diseases diagnosed and treated in Xijing Hospital of Air Force Medical University during Aug.2019 and Dec.2023 were retrospectively collected.Here, we report on the diagnosis and treatment of these patients, analysing their symptoms, serology, imaging and pathology as well as their treatment and outcomes. [Results] The patients included 2 male and 2 female.The lesions were involved with the retroperitoneum and urinary system.Three patients had symptoms of lumbar pain.The imaging manifestations were complex, including retroperitoneal mass involving urinary system organs in 2 cases, tabdense shadow of the right kidney in 1 case, and simple cystic mass of kidney in 1 case.Serum IgG4 value was not detected before surgery.All patients underwent radical surgical treatment.Postoperative pathology showed fibrous tissue hyperplasia with a large number of plasma cells, lymphocytes, a few neutrophil infiltrates, and lymphoid follicles and obliterated vasculitis in some specimens.The number of IgG4⁺ plasma cells was more than 10 in all tissues under high power microscope.After surgery, 3 patients had symptoms improved, and serum IgG4 value was within the normal range; 1 patient (patem 3) had elevated IgG4 value during follow-up, received subsequent hormone therapy, and the serum IgG 4 level remained stable. [Conclusion] The symptoms of IgG4-related diseases involving the urinary system are non-specific, and the imaging findings are various, easily confused with other diseases.Early detection of serum IgG4 and biopsy pathology can help clinicians make correct diagnosis in the early stage.

BACKGROUND: The primary limitation to kidney transplantation is organ shortage. Recent progress in gene editing and immunosuppressive regimens has made xenotransplantation with porcine organs a possibility. However, evidence in pig-to-human xenotransplantation remains scarce, and antibody-mediated rejection (AMR) is a major obstacle to clinical applications of xenotransplantation. METHODS: We conducted a kidney xenotransplantation in a brain-dead human recipient using a porcine kidney with five gene edits (5GE) on March 25, 2024 at Xijing Hospital, China. Clinical-grade immunosuppressive regimens were employed, and the observation period lasted 22 days. We collected and analyzed the xenograft function, ultrasound findings, sequential protocol biopsies, and immune surveillance of the recipient during the observation. RESULTS: The combination of 5GE in the porcine kidney and clinical-grade immunosuppressive regimens prevented hyperacute rejection. The xenograft kidney underwent delayed graft function in the first week, but urine output increased later and the single xenograft kidney maintained electrolyte and pH homeostasis from postoperative day (POD) 12 to 19. We observed AMR at 24 h post-transplantation, due to the presence of pre-existing anti-porcine antibodies and cytotoxicity before transplantation; this AMR persisted throughout the observation period. Plasma exchange and intravenous immunoglobulin treatment mitigated the AMR. We observed activation of latent porcine cytomegalovirus toward the end of the study, which might have contributed to coagulation disorder in the recipient. CONCLUSIONS 5GE and clinical-grade immunosuppressive regimens were sufficient to prevent hyperacute rejection during pig-to-human kidney xenotransplantation. Pre-existing anti-porcine antibodies predisposed the xenograft to AMR. Plasma exchange and intravenous immunoglobulin were safe and effective in the treatment of AMR after kidney xenotransplantation.
Transplantation, Heterologous/methods* ; Kidney Transplantation/methods* ; Heterografts/pathology* ; Immunoglobulins, Intravenous/administration & dosage* ; Graft Survival/immunology* ; Humans ; Animals ; Sus scrofa ; Graft Rejection/prevention & control* ; Kidney/pathology* ; Gene Editing ; Species Specificity ; Immunosuppression Therapy/methods* ; Plasma Exchange ; Brain Death ; Biopsy ; Male ; Aged

Shenling Baizhusan is a traditional Chinese medicine compound prescription formulated on the basis of Si Junzitang （Ginseng Radix et Rhizoma， Atractylodis Macrocephalae Rhizoma， Poria， Glycyrrhizae Radix et Rhizoma）. It has excellent functions of replenishing Qi， invigorating spleen， draining dampness， and checking diarrhea， and is one of the classical prescriptions of ''reinforcing earth to generate metal''. This prescription is primarily used in clinical practice to treat malnutrition in children， chronic diarrhea， gastrointestinal dysfunction， and other disorders. In addition， it has a good effect on gastrointestinal adverse reactions associated with radiotherapy and chemotherapy. With the booming of molecular biology， researchers have revealed the role of Shenling Baizhusan in the treatment of diseases， especially the mechanism of regulating different signaling pathways. We retrieved 26 relevant papers （4 written in English and 22 in Chinese） published in recent 5 years from 6 databases including China National Knowledge Infrastructure （CNKI）， Wanfang Data， VIP， PubMed， Cochrance Library， and Excerpta Medica Database （Embase）. On the basis of these papers， we summarized the mechanisms of Shenling Baizhusan in disease treatment. In the animal model of inflammatory bowel disease， Shenling Baizhusan can protect gastrointestinal mucosa by regulating the activation of nuclear factor kappa-B （NF-κB）， mitogen-activated protein kinase （MAPK）， Janus kinase/signal transducer and activator of transcription （JAK/STAT）， and myosin light chain kinase-myosin light chain （MLCK-MLC） signaling pathways. In the animal model of non-alcoholic fatty liver disease， Shenling Baizhusan regulates the activation of phosphoinositide 3-kinase/protein kinase B/mammalian target of rapamycin （PI3K/Akt/mTOR） signaling pathway and Kelch-like ECH-associating protein 1/NF-E₂-related factor 2/advanced glycation end-products （KEAP1/NRF2/AREs） signaling pathway， thus alleviating the lipid metabolism disorder induced by high-fat diet and reducing liver lipid accumulation and inflammatory response. In the animal model of lung cancer with bone metastasis， Shenling Baizhusan regulates the activation of PI3K/Akt/mTOR signaling pathway， thus playing an analgesic role. By summarizing the mechanisms of Shenling Baizhusan in treatment of different disease models from signaling pathways， we aim to provide clues for the in-depth study of this prescription.

ABSTRACT OBJECTIVE：To investigate the quality differences of Pinelliae Rhizoma with different diameter，and to providereference for the rational utilization of its resources. METHODS：A total of 65 batches of commercial Pinelliae Rhizoma from thefour major medicinal markets in China and two companies were collected as samples，the diameter of them were measured byvernier caliper，and then them were screened into samples with different diameter ranges（0.5 cm≤d≤0.8 cm，0.8 cm＜d≤1.0cm，1.0 cm＜d≤1.2 cm，1.2 cm＜d≤1.5 cm，1.5 cm＜d≤2.0 cm）by sieving. The content of organic acids（oxalic acid，citricacid，L-malic acid，succinic acid，fumaric acid，trans-aconitic acid and cis-aconitic acid）in Pinelliae Rhizoma samples of differentdiameter ranges were determined by HPLC，and the content of the extracts of Pinelliae Rhizoma samples of different diameterranges were determined by cold leaching method according to 2201 general principles in 2015 edition of Chinese Pharmacopoeia（Part Ⅳ），to evaluate the quality difference of Pinelliae Rhizoma in different diameter ranges.73 batches of Pinelliae Rhizoma fromcorresponding 10 main producing areas were collected as samples，to investigate its distribution of diameter. RESULTS：Dtermination of 65 batches of commercial Pinelliae Rhizoma showed that the content of organic acids and extracts in PinelliaeRhizoma increased with the increase of its diameter in general. However，there were no significant difference in organic acids andcontent of the extracts among Pinelliae Rhizoma samples of different diameter ranges in the same batch（P＞0.05）. The diameter distribution of 73 batches of Pinelliae Rhizoma from corresponding areas was mainly between 0.6 cm and 1.8 cm，with an averageweight of 95.54％. If the diameter standard（1-1.5 cm）specified in the 2015 edition of Chinese Pharmacopoeia（part Ⅰ）wasadopted，only 8 of 73 batches of Pinelliae Rhizoma meet the requirements，and the qualified rate was 10.96％；if the diameterrange was properly expanded to 0.7-1.5 cm，54 batches of Pinelliae Rhizoma meet the requirements，with a qualified rate of73.97％；when the diameter range was expanded to 0.7-1.6 cm，68 batches of Pinelliae Rhizoma meet the requirements，with aqualified rate of 93.15％ .CONCLUSIONS：There is no significant difference in the quality of Pinelliae Rhizoma with different diameters. Combined with the diameter distribution of Pinellia Rhizoma in different producing areas，the diameter range of 1-1.5cm specified in relative standard can be expanded to 0.7-1.6 cm，avoiding the waste of resources.

30%) might be a risk factor in HAPE susceptibility.