Objective To evaluate the effect of prone ventilation in children with severe pneumonia at high altitude.Methods By convenience sampling method,80 children with severe pneumonia hospitalized in intensive care department of a tertiary A children's hospital in Xining,Qinghai Province from June 2021 to June 2023 were selected as the study subjects,and the regional randomization group method was used to divide into a test group and a control group with 40 cases in each group.On the basis of routine care,the test group received prone ventilation once a day for 6 to 12 h;the control group received supine ventilation.Respiratory mechanical parameters(oxygenation index,oxygen saturation,arterial oxygen partial pressure,arterial CO2 partial pressure),mechanical ventilation duration and safety parameters(incidence of unplanned extubation,stress injury)at 6 h and 12 h of mechanical ventilation were compared.Results There were no shedding cases.The interaction between oxygenation index,blood oxygen saturation and arterial oxygen partial pressure(P＜0.05)in the 2 groups was compared(P＞0.05).The results of simple effect analysis showed that at 6 h,the oxygen saturation and oxygenation index in the test group were higher than those in the control group,and the difference was statistically significant(P＜0.05).At 12 h of mechanical ventilation,the oxygenation index,blood oxygen saturation and arterial oxygen partial pressure in the test group were higher than those in the control group,and the difference was statistically significant(P＜0.05).The time of mechanical ventilation in the test group was102.00(60.00,153.00)h and 126.00(108.00,156.00)h in the control group,and the difference was statistically significant(P=0.013).The incidence of unplanned extubation and pressure injury were compared,and the differences in 2 groups were not significant(P＞0.05).Conclusion Prone ventilation in children with severe pneumonia at high altitude is safe and feasible,which is helpful to improve the respiratory function and shorten the time of mechanical ventilation.

Objective To observe the neuropsychiatric behavioral performance of kainic acid(KA)-induced epilepsy rats;investigate gender differences in acute seizure and behavioral performance tasks relating to sense,motor,learning,and memory in the remission phase;and explore the potential neurobiological mechanisms of action.Methods Healthy SD rats aged 4 weeks were randomly divided into control and model groups,with 22 rats in each group(11 males and 11 females).An epileptic rat model was induced by intraperitoneal injection of KA.Seizure latency and frequency within 2 hours of KA injection were observed,seizure grade was assessed using the Racine grade standard,and a cortical electroencephalogram(EEG)was recorded.Behavioral performance was observed in a series of tasks including open field testing,balance beam walking,elevated plus maze,Y-maze,and novel object recognition.The level of GABA in the hippocampus was detected by ELISA,injury to hippocampal neurons was observed by Nissl staining,and the protein expression of synapsin-1 and synaptotagmin 1 in the hippocampus were detected by Western Blot.Results Both male and female rats presented typical epileptic behaviors after KA injection.However,compared with the effects in males,the latency of the first seizure(P=0.014)and Ⅳ～Ⅴ grading in female model rats were more pronounced(P＜0.01),and the frequency of epileptic seizures within 2 hours was significantly reduced(P=0.019).In the open field testing,KA-induced epileptic rats presented more motor but fewer hedonic behaviors,as indicated by the decrease in total movement distance in the central area,compared with the control group.Moreover,grooming frequency was significantly reduced in the female model rats compared with not only that in the control but also that in male model rats(P＜0.01).The model rats spent more time completing and had a higher score in the balance beam walking task,indicating their poorer stability and balance.In the elevated plus maze,the exploration times of male model rats in the closed arm was increased.The preference index of rats for the novel arm or object decreased in the Y-maze and novel object recognition,suggesting impairments to their learning and memory abilities.Moreover,neuronal injuries were found in the hippocampus of the model rats that were accompanied with a decline in GABA concentration and protein expression of synapsin-1 and synaptotagmin 1,with no gender differences.Conclusions Intraperitoneal injection of KA successfully induced an epilepsy rat model.However,there was a gender difference in the characters of acute seizures and performance of sensory,motor,and learning memory during epileptic remission.There was no gender differences in the hippocampal GABA concentration or expression of synaptic plasticity-related proteins,and thus no evidence was found for the mechanisms underlying the gender differences.

Humans ; Non-alcoholic Fatty Liver Disease/drug therapy* ; Hypoglycemic Agents/therapeutic use* ; Liver Cirrhosis/pathology* ; Biopsy ; Patients ; Liver/pathology* ; Fibrosis

OBJECTIVE:To investigate the effects of NOS1AP rs12742393 A/C gene polymorphism on lipid-regulating re-sponse of rosuvastatin calcium. METHODS:Two hundred and tuirty six patients with coronary heart disease(CHD)were selected from cardiology department of our hospital during Jan. 2014-Jun. 2015,and then given rosuvastatin calcium and other symptomatic treatment for 12 weeks. Polymorphism of NOS1AP rs12742393 A/C was detected by PCR-RFLP. The levels of TG,TC,HDL-C and LDL-C were detected by photoelectric colorimetry before treatment and 4,12 weeks after treatment. The serum relationship of genotype with the level of blood lipid was analyzed. RESULTS:Among 236 CHD patients,there were 131 cases of AA genotype (55.5%),98 cases of AC genotype(41.5%) and 7 cases of CC genotype(3.0%);genotype and allele frequencies met the Har-dy-Weinberg balance(P>0.05). There were 132 patients with normal blood lipid and 104 patients with hypercholesterolemia;there was statistical significance in genotype and allele frequencies (P<0.05). Among 104 CHD patients with hypercholesterolemia be-fore treatment,there was no statistical significance in the levels of TG,TC,LDL-C and HDL-C between AA genotype and AC+CC genotype(P>0.05). 4th and 12th week after treatment,the levels of TG,TC and LDL-C in different genotypes were all de-creased significantly;4th week after treatment,the level of LDL-C in AC+CC genotype was significantly lower than AA genotype, and the change compared to before treatment was significantly more than AA genotype,with statistical significance (P<0.05). There was no statistical significance in the level of HDL-C among different genotypes compared to before treatment;there was no statistical significance in the levels of TG,TC and HDL-C 4th,12th week after treatment and their changes compared to before treatment between AA genotype and AC+CC genotype;there was no statistical significance in the level of LDL-C 12th week after treatment and their changes between AA genotype and AC+CC genotype(P>0.05). CONCLUSIONS:NOS1AP rs12742393 A/C gene polymorphism is associated with CHD complicated with hypercholesterolemia;the C allele of NOS1AP rs12742393 may strengthen the response of CHD patients with hy-percholesterolemia to rosuvastatin calcium through influencing the level of LDL-C.

Anhedonia, or markedly diminished interest or pleas-ure, is a hallmark symptom of depression.As a psychopathological symptom, anhedonia was first noted in the early 19th century.The neurobiological mechanisms that underline anhedonia and its role in diagnosing depression disorder or evaluating antidepressant response have long been aroused attention for nearly a century.Consequently, there are many measuring methods established in both the animal study and human research, which would be reviewed in the present study.

Aim To study the effects of extracellular acidosis on articular chondrocytes pyroptosis and its possible mechanisms. Methods Primary articular chondrocytes were incubated in different pH and NAC. The expression of proinflammatory cytokines IL-1β, IL-18, ASC, NLRP3, caspase-1 were detected by Western blot and real-time PCR. The state of pyropto-sis was identified by AO/EB staining and LDH con-tents. The expression of ROS was observed by DCFH-DA, and ELISA was used to detect the IL-1β,IL-18 in cultured supernatants. Results Compared with the normal cell, extracellular acidosis could increase the expression of IL-1β, IL-18, ASC, NLRP3 and caspase-1 , upregulate the fluorescence intensity of in-tercellular ROS, accompanied with the promoted release of LDH. Moreover, it is observed that extra-cellular acidosis could also induce chondrocytes death by AO/EB staining. NAC,the scavenger of ROS could inhibit these effects of extracellular acidosis on chon-drocytes. Conclusion Extracellular acidosis may in-duce chondrocyte pyroptosis via upregulating the intra-cellular ROS content.

Aim To explore the proteomics mechanism of the differentiation induction effect of 4-amino-2-trif-luoromethyl-phenyl retinate(ATPR)on human leukemi-a K562 cells. Methods Human leukemia K562 cells were incubated with the same concentration (1 × 10 - 6 mol·L - 1 ) of ATPR or ATRA for 48 hours. The total cell proteins were collected, purified and digested by trypsin, solid phase extraction, and the peptides were detected by ESI-LC-MS / MS. The difference of the pro-tein expression between the cells treated with ATPR and ATRA was compared by using the Discoverer Pro-teome 1. 2 software, and the molecular function, the biological process and other information of those pro-teins were analyzed based on the DAVID, KEGG, STRING databases. Results 120 specific proteins were identified only in the ATPR group, 143 only in the ATRA group, and 422 other proteins in both groups. Results of DAVID analysis showed that ATPR-induced specific proteins were mainly involved in 39 biological processes of proteins and macromolecules metabolism, protein transport and localization and so on. Results of KEGG analysis revealed that ATPR-in-duced proteins participated in signal pathways, mainly metabolic pathways, PI3K-Akt signal pathway, TGF-beta signal pathway and other pathways in cancer. String protein interaction network analysis displayed that ATPR-induced proteins, like EIF3A, EIF6, RPL3, RPL8, RPL13, RPL7A, RPL21, RPS3, RPS14, NACA, BTF3, NHP2L1, PPP2CA proteins had direct interactions with more than or equal to 10 associated proteins. Conclusion The differentiation induction effect of ATPR on K562 cells might be as-cribed to the ATPR-induced proteins interaction net-work and the specific central proteins it induced, which are involved in the regulation of cell prolifera-tion, differentiation and apoptosis.

Objective To evaluate the curative effect of fumigating and washing therapy with Chinese medicine bath,sitz bath and flushing method in patients after hemorrhoidectomy.Methods A total of 180 patients with henorrhoidectomy were selected as the research object and participated in the research in Jiangsu Province Hospital of TCM and Jiangsu Hospital of integrated TCM and western medicine.According to random number table,they were assigned to the bath group,the sits bath group and the flushing group,with 60 cases in each group and 30 cases in each research center.The pain after surgery,around anus edema and intertion status of wounds in three groups were compared.Results The results showed that the scores of postoperative pain were gradually decreased.The score of postoperative pain at 7th day was (2.32±0.82) points in the flushing group;(2.65±0.04) points in the bath group,and (3.05±0.02) points in the sitz bath group (P＜0.05).The difference of pain scores at other time was not significant (P＞0.05).No significant difference in around anus edema and intertion status of wounds among three groups (P＞0.05).Conclusions Chinese medicine flushing therapy offers a better pain relief than sitz bath and bath method.There are no significant differences in shorting the time of wound healing and reducing the around anus edema.

Aim To investigate the effect of 4-Amino- 2-Trifluoromethyl-Phenyl Retinate on human breast cancer cells MDA-MB-231 and the possible mecha-nisms. Method Human breast cancer MDA-MB-231 cells were incubated with different concentrations of ATPR in vitro. MTT assay was performed to measure the proliferation of MDA-MB-231 . Cell growth curves were made by counting cells and morphologic changes were observed by Wright-Giemsa staining. The differ-entiation marker mucin-1 ( MUC-1 ) was measured by enzyme linked immunosorbent assay ( ELISA ) . Cell cycle was examined by Flow cytometry ( FCM ) . The expression of retinoic acid receptors ( RARs) and reti-noid X receptors ( RXRs ) were detected by Western blot and Quantitative real-time PCR (q-RT-PCR),re-spectively. Results Compared with solvent group, ATPR could inhibit the proliferation of MDA-MB-231 cells in a time-and dose dependent manner and induce the maturing and normality of morphology. The express of MUC-1 was significantly decreased, and the progres of cell cycle was blocked in the G0/G1-phase. The ex-pression of RARγ was decreased. Conclusions AT-PR could inhibit proliferation and induce differention of MDA-MB-231cells, it′s associated with RARγ.

Nesfatin-1, discovered in 2006 by Oh-I as an 82-ami-no-acid peptide derived from the precursor protein nucleobindin2 (NUCB2), has been identified to play an important role in the regulation of food intake and energy metabolism. Recently, it has also been found that Nesfatin-1 might be associated with the pathogenesis of depression. This article reviewed the advances in related studies on Nesfatin-1 at home and abroad, which should throw light in expliciting the physiological function of Nesfatin-1 and understanding the neurobiological mechanism of depression.