[Objective] To analyze the infection status of hepatitis E virus (HEV) among blood donors in Zhengzhou, so as to provide data support for formulating local blood screening strategies. [Methods] Random samples from blood donors from January to December 2022 were tested for HEV RNA using PCR technology. Reactive samples were sequenced for gene analysis, and the donors were followed up. [Results] Among 21 311 samples, 3(0.14‰) were reactive for HEV RNA, all of whom were male. Genetic sequencing results revealed that one strong positive sample was genotype 4, while sequencing failed for the other two due to low viral load. A follow-up of 25 strong positive donors showed that ALT significantly increased on day 7 after donation, anti-HEV IgM and anti-HEV IgG turned positive. On day 21, ALT returned to normal, and on day 35, HEV RNA turned negative. Notably, anti-HEV IgM and anti-HEV IgG persisted until day 482. [Conclusion] There is HEV infection among blood donors in Zhengzhou, and it is necessary to expand the screening scope to comprehensively explore the prevalence and genotype distribution of HEV among blood donors.

Background: s/Aims: Distal pancreatectomy with splenectomy (DPS) is a common surgical procedure for pancreatic body cancer.However, spleen-preserving distal pancreatectomy (SPDP) utilizing the Warshaw technique (WT) in malignancies is generally not favored due to concerns about inadequate resection. This study aims to assess the feasibility and oncologic outcomes of employing SPDP with WT in pancreatic body cancer. Methods: We conducted a retrospective analysis comparing 21 SPDP patients with 63 DPS patients matched by propensity score from January 2018 to November 2022. Clinical outcomes and follow-up data were analyzed using R. Results: Both groups exhibited similar demographic, intraoperative, and pathological characteristics, with the exception of a reduced number of total lymph nodes (p = 0.006) in the SPDP group. There were no significant differences in the rates of postoperative complications, recurrence, or metastasis. Local recurrence predominantly occurred in the central region as opposed to the spleen region.There were no cases of isolated recurrences in the splenic region. Median overall survival and recurrence-free survival times were 51.5 months for SPDP vs 30.5 months for DPS and 18.7 months vs 16.8 months, respectively (p > 0.05). The incidence of partial splenic infarction and left-side portal hypertension in the SPDP group was 28.6% (6/21) and 9.5% (2/21), respectively, without necessitating splenic abscess puncture, splenectomy, or causing bleeding from perigastric varices. Conclusions SPDP did not negatively impact local recurrence or survival rates in selected pancreatic body cancer patients. Further studies are necessary for validation.

Background: s/Aims: Distal pancreatectomy with splenectomy (DPS) is a common surgical procedure for pancreatic body cancer.However, spleen-preserving distal pancreatectomy (SPDP) utilizing the Warshaw technique (WT) in malignancies is generally not favored due to concerns about inadequate resection. This study aims to assess the feasibility and oncologic outcomes of employing SPDP with WT in pancreatic body cancer. Methods: We conducted a retrospective analysis comparing 21 SPDP patients with 63 DPS patients matched by propensity score from January 2018 to November 2022. Clinical outcomes and follow-up data were analyzed using R. Results: Both groups exhibited similar demographic, intraoperative, and pathological characteristics, with the exception of a reduced number of total lymph nodes (p = 0.006) in the SPDP group. There were no significant differences in the rates of postoperative complications, recurrence, or metastasis. Local recurrence predominantly occurred in the central region as opposed to the spleen region.There were no cases of isolated recurrences in the splenic region. Median overall survival and recurrence-free survival times were 51.5 months for SPDP vs 30.5 months for DPS and 18.7 months vs 16.8 months, respectively (p > 0.05). The incidence of partial splenic infarction and left-side portal hypertension in the SPDP group was 28.6% (6/21) and 9.5% (2/21), respectively, without necessitating splenic abscess puncture, splenectomy, or causing bleeding from perigastric varices. Conclusions SPDP did not negatively impact local recurrence or survival rates in selected pancreatic body cancer patients. Further studies are necessary for validation.

Background: s/Aims: Distal pancreatectomy with splenectomy (DPS) is a common surgical procedure for pancreatic body cancer.However, spleen-preserving distal pancreatectomy (SPDP) utilizing the Warshaw technique (WT) in malignancies is generally not favored due to concerns about inadequate resection. This study aims to assess the feasibility and oncologic outcomes of employing SPDP with WT in pancreatic body cancer. Methods: We conducted a retrospective analysis comparing 21 SPDP patients with 63 DPS patients matched by propensity score from January 2018 to November 2022. Clinical outcomes and follow-up data were analyzed using R. Results: Both groups exhibited similar demographic, intraoperative, and pathological characteristics, with the exception of a reduced number of total lymph nodes (p = 0.006) in the SPDP group. There were no significant differences in the rates of postoperative complications, recurrence, or metastasis. Local recurrence predominantly occurred in the central region as opposed to the spleen region.There were no cases of isolated recurrences in the splenic region. Median overall survival and recurrence-free survival times were 51.5 months for SPDP vs 30.5 months for DPS and 18.7 months vs 16.8 months, respectively (p > 0.05). The incidence of partial splenic infarction and left-side portal hypertension in the SPDP group was 28.6% (6/21) and 9.5% (2/21), respectively, without necessitating splenic abscess puncture, splenectomy, or causing bleeding from perigastric varices. Conclusions SPDP did not negatively impact local recurrence or survival rates in selected pancreatic body cancer patients. Further studies are necessary for validation.

ObjectiveBased on multi-index and multi-method detection， the quality of Rukuaixiao preparations was systematically evaluated from the perspective of characteristic components， and the existing problems were analyzed. MethodsLiquid chromatography-mass spectrometry（LC-MS） for the determination of 16 characteristic components was established to evaluate the quality of 129 batches of Rukuaixiao preparations. High performance liquid chromatography（HPLC） was established to determine the contents of salvianolic acids and tanshinones， investigate the rationality of quality control index of Salviae Miltiorrhizae Radix et Rhizoma in the standard for Rukuaixiao preparations in the 2020 edition of Pharmacopoeia of the People's Republic of China（hereinafter referred to as Chinese Pharmacopoeia） （volume Ⅰ）， and trace the causes of significant difference among different batches. The processing and different extraction methods of Vaccariae Semen were tested， analyzing the impact of formulation changes across different editions of Chinese Pharmacopoeia. The LC-MS was established for determining the changes in the ratio of toosendanin and isotoosendanin after water extraction of Toosendan Fructus. The contents of active components in different parts of Gleditsiae Spina were determined to identify the reason of the low contents of characteristic components in some enterprises. ResultsBased on the comprehensive analysis of the samples from different dosage forms， the contents of characteristic components of Vaccariae Semen and Gleditsiae Spina in tablets from manufacturer B and granules from manufacturer D were significantly higher than those in tablets from manufacturer A， and tablets and capsules from manufacturer C. The contents of tanshinones in some batches of products from manufacturer A were abnormally high， potentially linked to the use of 70% ethanol reflux during extraction of Salviae Miltiorrhizae Radix et Rhizoma. All samples from manufacturer C exhibited abnormally high proportions of salvianic acid A and 3，4-dihydroxybenzaldehyde（salvianolic acid degradation products） to the total seven phenolic acids， indicating a risk of blindly pursuing tanshinol content and neglecting more effective components. The extraction rate of the characteristic components from Vaccariae Semen by decocting with water was obviously higher than that by reflux extraction with 70% ethanol. However， using the stir-fried Vaccariae Semen could reduce the loss of ingredients. The content ratio of toosendanin and isotoosendanin decreased from the crude herb to the prepared medicine when Toosendan Fructus was prepared by water decoction. The reason for the low component content of Gleditsiae Spina may be attributed to manufacturers using excessive non-medicinal parts in their formulations. ConclusionIt is suggested that enterprises should ensure the quality of raw material inputs， especially those without quality-control items in the standard， reduce the use of non-medicinal parts， and prohibit arbitrary alterations to manufacturing methods or processes. It is also recommended that Vaccariae Semen in Rukuaixiao capsules and granules should be changed to the stir-fried processed products. Isotoosendanin should be taken into consideration in the drug supervision when Toosendan Fructus is prepared into medicine by water decoction. Salvianolic acid B should be set as a quality control index for Salviae Miltiorrhizae Radix et Rhizoma when revising the pharmacopoeia standard of Rukuaixiao preparations.

ObjectiveBased on multi-index and multi-method detection， the quality of Rukuaixiao preparations was systematically evaluated from the perspective of characteristic components， and the existing problems were analyzed. MethodsLiquid chromatography-mass spectrometry（LC-MS） for the determination of 16 characteristic components was established to evaluate the quality of 129 batches of Rukuaixiao preparations. High performance liquid chromatography（HPLC） was established to determine the contents of salvianolic acids and tanshinones， investigate the rationality of quality control index of Salviae Miltiorrhizae Radix et Rhizoma in the standard for Rukuaixiao preparations in the 2020 edition of Pharmacopoeia of the People's Republic of China（hereinafter referred to as Chinese Pharmacopoeia） （volume Ⅰ）， and trace the causes of significant difference among different batches. The processing and different extraction methods of Vaccariae Semen were tested， analyzing the impact of formulation changes across different editions of Chinese Pharmacopoeia. The LC-MS was established for determining the changes in the ratio of toosendanin and isotoosendanin after water extraction of Toosendan Fructus. The contents of active components in different parts of Gleditsiae Spina were determined to identify the reason of the low contents of characteristic components in some enterprises. ResultsBased on the comprehensive analysis of the samples from different dosage forms， the contents of characteristic components of Vaccariae Semen and Gleditsiae Spina in tablets from manufacturer B and granules from manufacturer D were significantly higher than those in tablets from manufacturer A， and tablets and capsules from manufacturer C. The contents of tanshinones in some batches of products from manufacturer A were abnormally high， potentially linked to the use of 70% ethanol reflux during extraction of Salviae Miltiorrhizae Radix et Rhizoma. All samples from manufacturer C exhibited abnormally high proportions of salvianic acid A and 3，4-dihydroxybenzaldehyde（salvianolic acid degradation products） to the total seven phenolic acids， indicating a risk of blindly pursuing tanshinol content and neglecting more effective components. The extraction rate of the characteristic components from Vaccariae Semen by decocting with water was obviously higher than that by reflux extraction with 70% ethanol. However， using the stir-fried Vaccariae Semen could reduce the loss of ingredients. The content ratio of toosendanin and isotoosendanin decreased from the crude herb to the prepared medicine when Toosendan Fructus was prepared by water decoction. The reason for the low component content of Gleditsiae Spina may be attributed to manufacturers using excessive non-medicinal parts in their formulations. ConclusionIt is suggested that enterprises should ensure the quality of raw material inputs， especially those without quality-control items in the standard， reduce the use of non-medicinal parts， and prohibit arbitrary alterations to manufacturing methods or processes. It is also recommended that Vaccariae Semen in Rukuaixiao capsules and granules should be changed to the stir-fried processed products. Isotoosendanin should be taken into consideration in the drug supervision when Toosendan Fructus is prepared into medicine by water decoction. Salvianolic acid B should be set as a quality control index for Salviae Miltiorrhizae Radix et Rhizoma when revising the pharmacopoeia standard of Rukuaixiao preparations.

ObjectiveThe antitumor activity of sesquiterpenoid M36 isolated from Myrrha against human hepatoma HepG2 cells was investigated in this study. MethodHepG2 cells were treated with M36 at different concentrations （0， 2， 4， 6， 8， 10 μmol·L^-1）. Firstly， the effects of M36 on the proliferation of human hepatoma HepG2 cells were detected by methyl thiazolyl tetrazolium （MTT）， colony formation assay， and EdU proliferation assay. Hoechst staining， flow cytometry analysis， and Western blot were used to explore the effect of M36 on the apoptosis of human hepatoma HepG2 cells. Acridine orange staining and western blotting were used to examine the effect of M36 on autophagy in HepG2 cells. Finally， Western blot was used to detect protein expression of cancer-related signaling pathways. ResultCompared with the blank group， M36 treatment significantly inhibited the proliferation of human hepatoma HepG2 cells （P<0.01）， and the half inhibitory concentration （IC₅₀） value of M36 for 48 h was 5.03 μmol·L^-1， in a dose- and time-dependent manner. M36 was also able to induce apoptosis and autophagy in human hepatoma HepG2 cells. After treatment with 8 μmol·L^-1 M36 for 48 hours， the apoptosis rate of HepG2 cells was （42.03±9.65）% （P<0.01）. Compared with the blank group， HepG2 cells treated with 4 and 8 μmol·L^-1 M36 for 48 h had a significant increase in cleaved poly ADP-ribose polymerase （cleaved-PARP） protein levels （P<0.01）. Acridine orange staining showed that autophagy was significantly activated in HepG2 cells treated with 4 and 8 μmol·L^-1 M36 for 48 h compared with the blank group （P<0.01）， which was further verified by the up-regulation of microtubule-associated protein 1 light chain 3 Ⅱ （LC3 Ⅱ）. Western blot results showed that compared with the blank group， the levels of phosphorylated extracellular regulated protein kinase （p-ERK）， phosphorylated p38 mitogen-activated protein kinase （p-p38 MAPK）， phosphorylated c-Jun N-terminal kinase （p-JNK）， and its downstream nuclear transcription factors c-Jun and p-c-Jun protein were significantly increased in M36 group （P<0.05， P<0.01）. The mechanism may be related to the up-regulation of MAPK signaling pathway. ConclusionThe sesquiterpenoid M36 isolated from Myrrha inhibits the proliferation of human hepatoma HepG2 cells and promotes apoptosis and autophagy， which may be related to the activation of the MAPK signaling pathway.

Animals ; Macaca mulatta ; Optic Disk ; Glaucoma ; Craniocerebral Trauma ; Intraocular Pressure ; Low Tension Glaucoma

OBJECTIVE To study the improvement effect of total flavonoids from Rosa multiflora root on vascular injury in rheumatoid arthritis （RA） model rats and its potential mechanism. METHODS Female Wistar rats were randomly divided into normal control group， model group， aspirin group （positive control， 30 mg/kg）， low-dose and high-dose groups of total flavonoids from R. multiflora root （4.15， 8.30 g/kg， by crude drug）， with 10 rats in each group. Except for the normal control group， the RA model was induced in other groups by collagen induction and high-fat diet. After 14 days of modeling， they were given corresponding drug solution/0.5% sodium carboxymethyl cellulose solution intragastrically， once a day， for 36 consecutive days. The total body score， arthritis index （AI） and swollen joint count （SJC） of the rats were evaluated regularly. After the last medication， serum levels of interleukin-6 （IL-6）， intercellular adhesion molecule-1 （ICAM-1） and vascular cell adhesion molecule- 1 （VCAM-1） were determined. The pathological morphological changes in the vascular tissue of thoracic aorta were observed； the protein expression of Toll-like receptor 4 （TLR4） and the protein phosphorylation levels of Janus kinase 2 （JAK2） and signal transduction and activator of transcription 3 （STAT3） in vascular tissue of thoracic aorta were measured. RESULTS Compared with the normal control group， serum levels of IL-6， ICAM-1 and VCAM-1， protein expression of TLR4， and the protein phosphorylation levels of JAK2 and STAT3 in vascular tissue of thoracic aorta were increased significantly in model group （P＜ 0.01）. The atherosclerotic plaque （atheroma）， cholesterol crystal， lymphocyte infiltration and a small number of unbroken foam cell aggregation could be seen in the vascular tissue of thoracic aorta. Compared with the model group， total body score （except for the low-dose group）， AI and SJC were decreased significantly in groups of total flavonoids from R. multiflora root on the 28th day （P＜0.05 or P＜0.01）； total body score，AI and SJC were decreased significantly in low-dose group of total flavonoids from R. multiflora root on the 49th day （P＜0.05 or P＜0.01）； the other quantitative indicators in serum and vascular tissue were significantly reversed in groups of total flavonoids from R. multiflora root （P＜0.05 or P＜0.01）， and pathological damage of vascular tissue was significantly relieved. CONCLUSIONS Total flavonoids from R. multiflora root can significantly improve vascular injury in RA model rats， and its mechanism may be related to reducing the protein expression of TLR4 in vascular tissue and inhibiting the activation of IL-6/JAK2/ STAT3 signaling pathway.

"MS/MS spectrum to structure"plays a critical role in the confirmative identification of complicated matrices and is currently regarded as an extremely challenging endeavor.MS/MS information provides vital clues to structural identification.In this study,a strategy was proposed to facilitate unambiguous identification through matching MS3 with MS2 spectra.Initially,MS3 spectra of the featured ions(c-and y-type ions)generated by the decomposition of ester functional group in esters and the MS2 spectrum of the structural unit([M-H]-)were all captured on the Qtrap-MS platform equipped with two tandem-in-space collision cells,including the second quadrupole cell(q2)and linear ion trap(LIT)chambers(actually the third quadrupole unit).Subsequently,the MS/MS spectrum matching between MS3 spectra of the ester compound and MS2 spectra of the structural unit(s)were achieved.As a result,the findings corresponding to MS3 and MS2 spectra matching were summarized.Finally,based on HR-MS/MS information of total salvianolic acid derivatives(TSA),36 kinds of compounds were preliminarily identified through matching with literature information and database retrieval.The applicability of MS3 and MS2 spectra matching strategy was further justified by the confirmative identification of phenolic acid compounds(Rosmarinic acid and salvianolic acid B)in TSA.Above all,MS3 and MS2 spectra matching strategy was quite meaningful towards advancing"MS/MS spectrum to structure"analysis through recognizing and identifying featured fragment ions,and also provided inspiration and new insights for the structural characterization.