Objective To evaluate the ability of the ratio of peripheral blood white blood cell(WBC)counts to platelet counts to predict the onset of radiation-induced thymic lymphoma(TL)in a mouse model.Methods Mice were subjected to fractionated total-body irradiation(TBI)to established a TL model before the changes of the WBC-to-platelet ratio during the development and progression of TL were investigated.Four-week-old male C57BL/6J mice were randomized into the normal(non-irradiation)group and radiation exposure group that was subjected to 1.8 Gy TBI once weekly for four consecutive weeks.The survival and TL-incidence of those two groups were compared within 370 days of TBI.Histomorphology and hematoxylin & eosin(H&E)staining of the thymus were used for definite diagnosis of TL while flow cytometry was adopted to detect the frequency changes of T cells in the thymus,bone marrow and spleen.Peripheral blood(PB)cell counts were measured to analyze the changes of peripheral hemogram during TL pathogenesis.Results No mice in the normal group were diagnosed with TL while 83％of the irradiated mic suffered from TL within 370 days of fractionated TBI(P＜0.0001).Using histopathologic technology,medium-sized tumor cells were observed in the thymus of irradiated mice diagnosed with TL.Cytometric analysis showed decreased frequencies of CD4 mono-positive cells and increased frequencies of CD8 mono-positive cells in the thymus,bone marrow and spleen of mice diagnosed with TL.PB analysis displayed a significant increase in the WBC-to-platelet ratio one week prior to the TL-caused death in the irradiated mice(P＜0.01).Conclusion Elevation of the peripheral blood WBC-to-platelet ratio can help predict the onset of IR-induced TL of mice.

Objective:To investigate relationships between serum growth differentiation factor 15 (GDF15) and glycolipid metabolism in patients with metabolic associated fatty liver disease (MAFLD).Methods:The current investigation was a cross-sectional study. A total of 333 patients from the Fengxian District Central Hospital were recruited into the study after physical examination from February 2020 to February 2021. There were 107 patients with MAFLD and type 2 diabetes mellitus (T2DM), including 54 males and 53 females with a mean age of (57±11) years. There were 65 patients with simple MAFLD only, including 32 men and 33 women with a mean age of (49±5) years. There were 105 patients with T2DM only, including 53 men and 52 women, with a mean age of (56±10) years. A control group of 56 people without MAFLD or diabetes,28 male, 28 female, mean age (48±6) years, was also included in the study. Serum GDF15 was measured via enzyme-linked immunosorbent assays. IBM SPSS 26.0 was used for statistical analysis. Logistic regression was used to evaluate relationships between GDF15 and metabolic abnormalities in MAFLD patients.Results:GDF15 progressively increased in the control [385 (296, 484) ng/L], nonobese MAFLD [388 (319, 435) ng/L], obese MAFLD [426 (354, 527) ng/L], T2DM [664 (483, 900) ng/L], and MAFLD+T2DM groups [770 (560, 1 074) ng/L]( H=113.82, P=0.001). There was no significant difference in serum GDF15 between the simple MAFLD [406 (339, 524) ng/L] and control group ( U=1 505.50, P=0.132). GDF15 was significantly higher in the MAFLD+T2DM group than in the T2DM-only group ( U=4 573.50, P=0.019). In logistic regression analysis increased GDF15 was associated with increased risks of simple MAFLD [odds ratio ( OR)=2.202], T2DM ( OR=29.656), and MAFLD+T2DM( OR=58.197). In patients with MAFLD, serum GDF15 was higher in the FIB4 index>1.45 group [773 (534, 1 162) ng/L] than in the FIB4 index<1.45 group [527 (389, 787) ng/L] ( U=1 709.50, P<0.001). Increased GDF15 was associated with an increased risk of advanced liver fibrosis ( OR=2.388). Conclusion:In patients with simple MAFLD, GDF15 level was not significantly higher than in the control group. In the T2DM-only group and the MAFLD+T2DM group GDF15 was significantly higher than in the control group. Increased serum GDF15 was associated with increased risk and severity of MAFLD complicated with abnormal glucose and lipid metabolism. High GDF15 increased the risk of advanced fibrosis in MAFLD patients.

Zn²⁺ is required for the activity of many mitochondrial proteins, which regulate mitochondrial dynamics, apoptosis and mitophagy. However, it is not understood how the proper mitochondrial Zn²⁺ level is achieved to maintain mitochondrial homeostasis. Using Caenorhabditis elegans, we reveal here that a pair of mitochondrion-localized transporters controls the mitochondrial level of Zn²⁺. We demonstrate that SLC-30A9/ZnT9 is a mitochondrial Zn²⁺ exporter. Loss of SLC-30A9 leads to mitochondrial Zn²⁺ accumulation, which damages mitochondria, impairs animal development and shortens the life span. We further identify SLC-25A25/SCaMC-2 as an important regulator of mitochondrial Zn²⁺ import. Loss of SLC-25A25 suppresses the abnormal mitochondrial Zn²⁺ accumulation and defective mitochondrial structure and functions caused by loss of SLC-30A9. Moreover, we reveal that the endoplasmic reticulum contains the Zn²⁺ pool from which mitochondrial Zn²⁺ is imported. These findings establish the molecular basis for controlling the correct mitochondrial Zn²⁺ levels for normal mitochondrial structure and functions.
Animals ; Caenorhabditis elegans/metabolism* ; Cation Transport Proteins/genetics* ; Homeostasis ; Mitochondria/metabolism* ; Zinc/metabolism*

Objective To investigate MR T2-mapping in evaluating birth-related levator ani muscle injury.Methods 25 primiparas at 6 weeks after first vaginal delivery as primiparous group and 12 nulliparous volunteers as control group were prospectively studied. All the subjects underwent pelvic MRI including T2-mapping,mDIXON-T2 WI sequences.Levator ani muscle were divided into two subgroups:levator ani muscle injury group and non-injury group according to if there were edema,avulsion,or rupture in each levator ani muscle subdivisions[puborectal muscle(PRM);iliococcygeal muscle(ICM)],which were showed on mDIXON-T2 WI images.Two radiologists evaluated T2 values of PRM,ICM and observed artificial color images respectively.The consistency between two observers for T2 values of PRM,ICM were evaluated using the intraclass correlation coefficient (ICC ),the difference of T2 values in each levator ani muscle subdivisions among control group,non-injury group and muscle injury group were analyzed using ANOVA .Results There were 26 PRM injury cases and 24 non-injury cases in primiparous group on mDIXON-T2 WI images,and no ICM injured cases in our study.Inter-rater reliability for T2 values between two observers were good(ICC >0.75).T2 values in PRM injury group,non-injury group and control group were(62.78±1.23)ms,(49.75±3.17)ms,(49.96±4.37)ms respectively and the difference was significant. There were significant difference between PRM injury group and non-injury group,control group respectively(P =0.000,P =0.000). The T2 values of ICM in PRM injury group,non-injury group and control group were(70.80±6.50)ms,(62.41±7.32)ms,(62.78±6.91)ms and there were significant difference(P =0.000),meanwhile the difference between PRM injury group and non-injury group,control group were significant respectively(P =0.000,P =0.000).The color gradation of PRM in PRM injury group were mixed with blue, green,and yellow,and tone were lightened on T2-mapping artificial color images;ICM color gradation were uneven with green and yellow, a d tone were higher than those of control group and non-injurygroup.Conclusion T2-mapping can quantitatively assess birth-related levator ani muscle injury and T2-mapping artificial color images show the range and degree of levator ani muscle injury visually.It is hopeful to find micro lesions that T2 WI images are difficult to find.

Objective To compare the efficacy of selective laser trabeculoplasty (SLT) on the intraocular pressure (IOP) reduction in the treatment of ocular hypertension (OHT),early and moderate primary open angle glaucoma (POAG).Methods Non-randomized controlled study was conducted in 120 patients (120 eyes),who were divided into 3 groups according to the patients' condition,including OHT group with 40 eyes of 40 patients,early-stage POAG group (40 eyes of 40 patients) and medium-stage POAG group (40 eyes of 40 patients),aged rang from 16 to 79 years.SLT was performed on the 360° trabecular meshwork using 532 nm frequency-double Q-switched Nd:YAG laser (Selecta duet),with the pulse of 3 ns and spot diameter of 400 nm.The initial energy was 0.6 m J,which decreased at 0.1 mJ interval till champagne bubble appeared.The following-up was postoperative 1 day,1 week,1 month,3 months and 6 months,respectively,and changes in IOP before and after SLT was recorded and analyzed statistically.Resuits Postoperative IOP at different time points was significantly lower than that of preoperation in the three groups,with significant difference (all P ＜ 0.05).There was also significant difference in IOP of the each group at different time points after the operation (all P ＜ 0.05).The preoperative baseline IOP of OHT group,early-stage POAG group and medium-stage POAG group was (25.95 ± 1.80) nmHg (1 kPa =7.5 mmHg),(24.66 ± 1.55) mmHg and (25.62 ± 2.67) mmHg,respectively,approaching significant difference (P ＜0.05).After eliminating the influence of baseline IOP,intergroup differences of postoperative IOP at each time point in the three groups were statistically significant (all P ＜ 0.05),and intragroup differences were also significant (all P ＜ 0.05).When compared with corrected baseline IOP,the reduction of IOP was the largest in OHT group after SLT,followed by the early-stage POAG group,and the lowest was in the medium-stage POAG group.Conclusion SLT has a good effect on IOP reduction for OHT and POAG,and the treatment effect of SLT declines successively according to the severity of POAG.

Objective To understand the radiation protection effect of pre-irradiation administrations of nilestriol on the mice with bone marrow type of acute radiation syndrome after irradiation with 60Co γ-rays,along with its mechanisms for improvement of hematopoiesis.Methods The nilestriol administration protocols were prepared by analysis of peripheral blood cell counts and survival rate experiment on mice.The mechanisms by which the pre-irradiation twice administrations improved the post-irradiation recovery of bone marrow hematopoiesis were studied by the analysis of the surface marker of bone marrow hematopoietic stem/progenitor cells of mice and by the inspection of hematopoietic progenitor cell colony and by using histopathological assessment of bone marrow.Results Pre-irradiation administration of nilestriol at two-or three-day intervals had been shown to increase survival rates up to 100％ in mice exposed to 9.0 Gy γ-rays,which was superior to a single administration (20％,x2 =21.66,21.66,P ＜0.05).The pre-irradiation administration both at one-day or two-day intervals were capable of improving the recovery of peripheral blood counts,including white blood cell (WBC),red blood cell (RBC),and platelet in mice exposed to 6.5 Gy (F =21.33,100.9,49.34,19.19,P ＜ 0.05),showing the better effects than a single administration (F =17.11,63.38,21.89,14.37,P ＜ 0.05).The two-day-interval administration of nilestriol could significantly increase the numbers of bone marrow hematopoietic stem/progenitor cell counts (t =8.58,2.80,P ＜ 0.05) in mice on day 10 after 6.5 Gy irradiation.This also could be capable to significantly improve colony formation,with there being statistical difference compared with single administration(t =4.29,6.34,P ＜ 0.05).Also the administration at two-day-interval were also usefull in reconstruction of hematopoietic cell hyperplasia of bone marrow of irradiated mice.Conclusions As compared with conventional single admination,the pre-irradiation multiple administrations of nilestriol showed significantly improved radiation protection effects.Considering a nuclear medical emergency rescue,it is recommended to follow the pre-irradiation administration of nilestriol at two-day interval,which could obtain the best protection effects at minimum administration frequency.

The actions of four organic acids in Radix isatidis, a traditional Chinese medicinal (TCM) herb, on Escherichia coli, Staphylococcus aureus and Shigella dysenteriae growth were investigated by microcalorimetry. The four organic acids were syringic acid, 2-amino-benzoic acid, salicylic acid and benzoic acid. The power-time curves of Escherichia coli, Staphylococcus aureus and Shigella dysenteriae growth with and without organic acids were acquired, meanwhile the extent and duration of inhibitory effects on the metabolism were evaluated by growth rate constants (k1, k2), maximum heat-output[0] power (P(m)) and peak time (t(m)). The inhibitory activity varied with different drugs. The sequences of anti-microbial activity of the four organic acids on Escherichia coli, Staphylococcus aureus and Shigella dysenteriae were all: syringic acid > 2-amino-benzoic acid > salicylic acid > benzoic acid. And benzoic acid promoted the growth of Staphylococcus aureus and Shigella dysenteriae. This study provides a basis for the further study on Radix Isatidis.
Anti-Bacterial Agents ; isolation & purification ; pharmacology ; Benzoic Acid ; isolation & purification ; pharmacology ; Calorimetry ; methods ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; Escherichia coli ; drug effects ; Gallic Acid ; analogs & derivatives ; isolation & purification ; pharmacology ; Microbial Sensitivity Tests ; Salicylic Acid ; isolation & purification ; pharmacology ; Shigella dysenteriae ; drug effects ; Staphylococcus aureus ; drug effects

Purpose To develop the Pharmic Information Consulting System and apply it to clinic or outpatient department so that doctors can consult the pharmic information quickly.Method Based on PowerBuider9.0 and the net in our sanatorium,a standard and practical pharmic information list was made by using Oracle7.3 database software.Result With this system the following functions can be available including pharmic information management,pharmic information retrieving,new medicine information provision,hospital information provision,adverse drug reactions announcement,pharmic education,etc.This system is a very useful tool for pharmaceutists,doctors even nurses.Pharmaceutists can use it to collect,save and classify pharmic information.Doctors can use it to consult the pharmic information quickly.Conclusion Using net service mode,this system shows such characteristics as speediness,exactness,adjustability and expandability.It is fit for the service of pharmic information and is valuable to be popularizd.

Transzuojin Pill.Conclusion Microcalorimetry can be used to investigate the drug property differences during combination of Rhizoma Coptidis with Fructus Evodiae after separated decoction.