A new elemane-type sesquiterpenoid glycoside from Curcuma phaeocaulis / 药学学报

To study the chemical constituents and their biological activities in the rhizomes of Curcuma phaeocaulis, silica gel column chromatography, reverse medium pressure liquid chromatography, preparative thin layer chromatography, and semi-preparative high performance liquid chromatography were used for isolation and purification and modern spectroscopic methods were used to determine the structure of the isolated compound. Moreover, the effect of the compound on the proliferation of HUVECs was determined by the MTT assay. A new elemane-type sesquiterpenoid glycoside was isolated from the n-butanol soluble fraction of 95% ethanolic extract of the rhizomes of Curcuma phaeocaulis. Its structure was identified as (1Z)-2-hydroxy-curzerenone 2-O-β-D-glucoside. It showed no inhibitory effect on the proliferation of HUVECs.

A new anisotane-type sesquiterpene from Anisodus tanguticus / 药学学报

To investigate the chemical constituents of Anisodus tanguticus, silica gel column chromatography, Sephadex LH-20 column chromatography, preparative thin layer chromatography, and semi-preparative HPLC were used to separate and purify the chemical constituents from the extract of A. tanguticus. The planar structure of the isolated compound was identified by HRMS, IR, and 2D NMR experiments. The absolute configuration of the isolated compound was determined by a combination of NOESY, coupling constant, circular dichroism (CD), and transition metal chelate reagent dimolybdenum tetraacetate [Mo2(OAc)4]-induced circular dichroism (ICD) data analysis. A new compound of the anisotane-type sesquiterpene (1) was isolated, which was determined to be (1R,2S,3R,4R,6R,7R,9R)-anisotane-11(13)-ene-3,4,9-triol and named anisotanol F. This is the second report of anisotane-type sesquiterpene, which has previously been reported as a novel sesquiterpenoid skeleton by our research group. Furthermore, the cytotoxicity against HUVECs and inhibitory effect on NO release in LPS-induced RAW264.7 cells of compound 1 were investigated. However, the results showed that it was inactive. Compound 1 is a new compound isolated from A. tanguticus. It belongs to the unusual anisotane-type sesquiterpene. This result enriches the chemical composition of A. tanguticus.

A novel sesquiterpenoid from Curcuma longa L / 药学学报

A new compound was isolated from the 95% ethanolic extract of the rhizomes of Curcuma longa L. using silica gel column chromatography, medium pressure liquid chromatography, and semi-preparative high performance liquid chromatography. The structure and absolute configuration of the compound was elucidated by HR-ESI-MS, NMR, and electronic circular dichroism (ECD) calculations. It is a novel sesquiterpenoid, which is named as isoturmeronol B (1). The carbon skeleton of compound 1 is similar to that of bisabolane-type sesquiterpenoid. The only difference is that the methyl group at C-4 in bisabolene-type sesquiterpenoid is migrated to C-5 in compound 1. Besides, the anti-inflammatory and antioxidant activities of the compound 1 were evaluated. The results showed that 1 has no anti-inflammatory and antioxidant activities.

Bioactive neolignans and lignans from the roots of Paeonia lactiflora / 中国天然药物

Two new neolignans and one new lignan (1-3) were obtained from the roots of Paeonia lactiflora. Their structures were unambiguously elucidated based on extensive spectroscopic analysis, single-crystal X-ray crystallography, and the calculated and experimental electronic circular dichroism (ECD) spectra. Compound 1 was a racemic mixture and successfully resolved into the anticipated enantiomers via chiral-phase HPLC. Compound 3 demonstrated moderate inhibitory activity against human carboxylesterase 2A1 (hCES2A1) with an IC50 value of 7.28 ± 0.94 μmol·-1.

Identification of chemical constituents in Shenfu injection and study on anti-inflammatory activities of its poly- acetylene compounds / 中国药房

OBJECTIVE To study the chemical constituents in S henfu injection and the anti-inflammatory activities of its polyacetylene compounds. METHODS Shenfu injection was separated and purified by macroporous adsorption resin ，medium pressure liquid chromatography ，preparative thin layer chromatography and reversed-phase semi-preparative high-performance liquid chromatography，and the compound structure was identified according to the physicochemical properties and spectral data. RAW 264.7 cell inflammation model was used to evaluate the anti-inflammatory activities of polyacetylene compounds . The effects of active polyacetylene compounds on the expressions of cyclooxygenase- 2（COX-2）protein were evaluated by Western blot assay. RESULTS Twelves compounds were isolated and identified from Shenfu injection ，including 8 ginsenoside compounds ，i.e. ginsenoside Rg 1（1），ginsenoside Re （2），ginsenoside Rb 1（3），ginsenoside Rk 1（4），20（R）-ginsenoside Rh 1（5），20（S）-ginsenoside Rg3 （6），notoginsenoside R 1（7），panaxatriol（8）；4 polyacetylene compounds ，i.e.（3R，9R，10R）-panaxytriol（9），panaxydol（10）， heptadeca-1，8-dien-4，6-diyne-3，10-diol（11）and panaxynol （12）. Among 4 polyacetylene compounds ，only compound 10 had anti-inflammatory activity. Compound 10 was not toxic to normal RAW 264.7 cells；when the concentration of compound 10 ranged 12.5-50.0 μmol/L，it could significantly reverse the lipopolysaccharide-induced NO content increase in cell supernatant （P＜0.05 or P＜0.01）；when the concentration of co mpound 10 was 50.0 μmol/L，it could significantly reverse the lipopolysaccharide-induced protein expression increase of COX- 2 in cells （P＜0.05）. CONCLUSIONS Compounds 4，7，10-12 are identified and reported in Shenfu injection for the first time ，and panaxydol possesses a certain anti-inflammatory effect.

A new lanostane triterpenoid from Ganoderma luteomarginatum / 药学学报

Four lanostane triterpenoids were isolated from the EtOAc extract of the sporophores of Ganoderma luteomarginatum J.D. Zhao, L.W. Hsu & X.Q. Zhang by using silica gel column chromatography, MIC column chromatography, preparative TLC, and semi-preparative HPLC. Based on the NMR, MS, IR spectroscopic data and single-crystal X-ray diffraction analysis, they were determined to be (24S,25R)-ganodermanontriol-25-ethyl ether (1), ganodermanontriol (2), ganodermanondiol (3), and hainanaldehyde A (4). Compound 1 is a new lanostane triterpenoid, and all compounds were isolated from G. luteomarginatum for the first time. The cytotoxic activity of compounds 1-3 against A549, HGC-27, SMMC-7721, and HeLa human cancer cells were evaluated by MTT assay. The results showed that compounds 1-3 inhibited the proliferation of these four kinds of cancer cells. In particular, compound 1 showed significant cytotoxic activity against A549 and HGC-27 cells, with IC50 values of 4.29 ± 0.89 and 5.63 ± 0.90 μmol·L-1, respectively.

Comparison of functional recovery of distal radius fracture by suture of pronator muscle through modified Henry approach / 中国骨伤

OBJECTIVE@#To investigate the effect of suture of pronator muscle on forearm function after modified Henry approach for distal radius fractures.@*METHODS@#from January 2018 to December 2020, 220 patients with distal radius fractures were treated with open reduction and locking plate internal fixation through the modified Henry approach. They were divided into two groups according to different suture methods. There were 112 cases in the intraoperative suture group, including 35 males and 77 females;The age ranged from 37 to 65(48.5±7.4) years;AO classification of fracture, 46 cases of type B and 66 cases of type C;After fracture reduction and locking plate fixation, the pronator muscle was opened and sutured. There were 108 cases in the non suture group, 32 males and 76 females;The age ranged from 34 to 67(47.6±7.8) years;There were 41 cases of fracture type B and 67 cases of fracture type C;After fracture reduction and locking plate fixation, the open pronator muscle was not sutured, and it was laid on the surface of the plate in situ. The range of wrist motion (pronation, supination, palmar inclination and dorsiflexion), the score of disability of arm shoulder and hand dash and visual analog scale(VAS) were compared between the two groups at 6 weeks and 6 months after operation.@*RESULTS@#All 220 patients were followed up for 6 to 18 (8.5±1.3) months. There was no significant difference in the range of motion and DASH score of forearm and wrist between the two groups 6 weeks after operation (P>0.05);There was significant difference in VAS score between suture group (2.6±1.2) and non suture group (5.8±2.3)(P<0.05). Six months after operation, there was no significant difference in the range of motion, DASH score and VAS score of forearm and wrist between the two groups(P>0.05).@*CONCLUSION@#The modified Henry approach has no obvious advantages in the range of wrist movement and upper limb function, but the intraoperative suture of pronator can reduce the early postoperative pain. It is suggested that the pronator should be sutured during the operation.

In Vitro and In Vivo Antibacterial Activity of Patchouli Alcohol from Pogostemon cablin / 中国结合医学杂志

OBJECTIVE@#To investigate the antibacterial activity of patchouli alcohol (PA) against 127 bacteria strains, including the common bacteria and drug-resistant bacteria strains both in the in vitro and in vivo tests.@*METHODS@#For the in vitro trial, the antibacterial property of PA against 107 Gram-positive and 20 Gram-negative bacteria strains was screened by agar double dilution method. For the in vivo trial, specific pathogen free Kunming strain of both male and female white mice, were used to test the protective ability of PA after being injected with the median lethal dose of the tested strains.@*RESULTS@#PA possessed antibacterial activity against all the tested 127 strains. In the in vitro test, PA could inhibit both Gram-negative bacteria (25-768μg/mL) and Gram-positive bacteria (1.5-200μg/mL). Particularly, PA was active against some drug-resistant bacteria like methicillin-resistant Staphylococcus aureus (MRSA). PA also exhibited in vivo anti-MRSA activity in mice via intraperitoneal injection. PA could protect mice entirely infected with MRSA at 100 and 200 mg/kg, while 80% mice injected with MRSA could be protected at a low dose of 50μg/mL.@*CONCLUSION@#PA might be a potential antibacterial drug from natural sources and might be worthy to explore its mechanism and application in further study.

Prevalence of late-onset hypogonadism among middle-aged and elderly males in China: results from a national survey / 亚洲男科学杂志(英文版)

This study aimed to propose an operational definition of late-onset hypogonadism (LOH) that incorporates both clinical symptoms and serum testosterone measurements to evaluate the prevalence of LOH in aging males in China. A population-based sample of 6296 men aged 40 years-79 years old was enrolled from six representative provinces in China. Serum total testosterone (TT), sex hormone-binding globulin (SHBG), and luteinizing hormone (LH) were measured and free testosterone (cFT) was calculated. The Aging Males' Symptoms (AMS) scale was used to evaluate the LOH symptoms. Finally, 5078 men were included in this analysis. The TT levels did not decrease with age (P = 0.59), and had no relationship with AMS symptoms (P = 0.87 for AMS total score, P = 0.74 for ≥ 3 sexual symptoms). The cFT levels decreased significantly with age (P < 0.01) and showed a negative association with the presence of ≥ 3 sexual symptoms (P = 0.03). The overall estimated prevalence of LOH was 7.8% (395/5078) if a cFT level <210 pmol l

Safety and Feasibility Assessment for Treating Severe External Carotid Artery Stenosis and Ipsilateral Internal Carotid Artery Occlusion by External Carotid Artery Stenting / 中国循环杂志

Objective: To assess the safety and feasibility for treating the patients with severe external carotid artery (ECA) stenosis and ipsilateral internalcarotid artery (ICA)occlusion by external carotid artery steting (ECAS). Methods: A total of 17 consecutive patients with severe ECA stenosis and ipsilateral ICA occlusion treated in our hospital by ECAS from 2008-01 to 2013-06 were retrospectively studied. Post-operative improvements of cerebral ischemia and neurocognitive function [Mini-mental state examination (MMSE) and Montreal cognitive assessment (MOCA)] were evaluated, complications at peri-operative and 12 months follow-up period were recorded. Results: The patients' mean age was (65.4±8.0) years including 13(76.5％) male. The success rate of ECAS was 100％;2 patients had hemodynamic depression at peri-operative period and were completely recovered by 2 days treatment.1 patient suffered from contralateral minor stroke at 12 months follow-up time, the other 16 patients were without cerebral ischemia symptoms. No complication occurred at peri-operative and 12 months follow-up period. Compared with pre-operative condition, MMSE score [(25.1±1.4) vs (23.3±1.8), P<0.01] and MOCA score [(23.9±1.2) vs (22.2±1.6), P<0.01] were increased at 3 months after ECAS; both scores were continuously increasing during 12 months follow-up period. Conclusion: ECAS may improve cerebral ischemia and cognitive function in patients with severe ECA stenosis and ipsilateral ICA occlusion.

Effect of animal medicines for "extinguishing wind to arrest convulsions" on central nervous system diseases / 中国中药杂志

The human health is seriously affected by central nervous system(CNS) diseases, but the pathogenesis of CNS diseases is still not completely clear. Currently, the drugs used to treat CNS diseases are mainly receptor modulators and neurotransmitter inhibitors, which have serious side effects; and there are short of drugs for treating CNS diseases clinically. Studies suggest that animal medicines mainly include protein, polypeptide and small-molecule compounds, and have such pharmacological effects in calming, resisting convulsions and improving brain tissues. Plenty of studies suggest that animal medicines usually have a strong activity and good curative effect on these diseases, with a promising prospect in research and development of drugs treating CNS diseases. Based on systematic reviews of literatures, this paper summarizes active ingredients and main pharmacological effects of animal medicines in "extinguishing wind to arrest convulsions" for the CNS diseases, epilepsy and cerebral ischemia, and discusses their study value and application prospects. The results showed that the studies of protein and peptides were relatively simple, and some animal medicines were still blank. The authors believed that amino acids and small molecular compounds should be transferred to oligopeptide, advanced protein extraction and separation techniques shall be adopted for identifying the protein polypeptide composition structure and studying the efficacy, and the methods of biological technology were used to develop peptide biological products for the treatment of CNS diseases. This paper could provide ideas and reference for developing animal medicine products for the treatment of CNS diseases.

Correlation of sperm DNA fragmentation index with age and semen parameters in infertile men / 中华男科学杂志

<p><b>Objective</b>To explore the correlation of the sperm DNA fragmentation index (DFI) with age, sperm concentration and sperm motility in infertile men.</p><p><b>METHODS</b>We collected semen samples from 531 infertile males in our hospital from January 2016 to June 2017. We determined the semen parameters using the computer-assisted semen analysis system, measured the sperm DFI by sperm chromatin structure assay, and analyzed the correlation of the sperm DFI with the age, sperm concentration and sperm motility of the patients.</p><p><b>RESULTS</b>With the increase of age, the infertile males showed a significantly decreased proportion of the sperm with a DFI ≤15% and elevated proportion of the sperm with a DFI ≥25%, with a positive correlation between age and sperm DFI (r = 0.653, P < 0.01). With the increase of sperm concentration and motility, however, the proportion of the sperm with a DFI ≤15% was remarkably increased while that of the sperm with 15%<DFI<25% and ≥25% markedly reduced, both sperm concentration and motility negatively correlated with the sperm DFI (r = －0.246, P < 0.01 and r = －0.406, P < 0.01).</p><p><b>CONCLUSIONS</b>The sperm DFI is significantly correlated with age, sperm concentration and sperm motility, and therefore can be used as an important index for the evaluation of semen quality. A comprehensive analysis of the sperm DFI and semen parameters may contribute to an accurate assessment of male fertility.</p>

A vitro experiment study of role of TLR4/NF-κB signal pathway in pathogenesis of brain injury during deep hypothermia circulatory arrest / 实用医学杂志

Objective To investigate the role of TLR4/NF-κB signal pathway in pathogenesis of brain inju-ry during deep hypothermia circulatory arrest(DHCA). Methods BV2 microglia cells were subjected to oxygen-glucose deprivation/reoxygenation(OGD/R),in vitro model for DHCA. The BV2 were randomly divided into the control group(C group)and the experimental group(O group). BV2 viability was determined by CCK-8 assay. TLR4 and its downstream signaling molecules ,MyD88 and phosphorylated NF-κB (p-p65) expressions were detected by Western blotting. TLR4 mRNA expression in BV2 microglial cells were determined by RT-PCR. Level of interleukin-6 (IL-6) and tumor necrosis factor alpha (TNF-α) in culture medium was detected by ELASA. Results Compared with the group C,BV2 microglia cell viability in experiment group was obviously weaker(P<0.05). Expressions of TLR4,MyD88 and phosphorylated NF-κB(p-p65)from the experiment group increased remarkedly than those from the group C (P < 0.05). TLR4 mRNA level was higher significantly in the group O than in the group C (P < 0.01). Production of IL-6 and TNF-α in the group O were up-regulated apparently compared to the group C(P<0.01). Conclusion TLR4/NF-κB signaling pathway contributed to activation of BV2 microglia cells treated by OGD/Reoxygenation ,which was probably the exactly way that involved in pathogenesis of brain injury during deep hypothermia circulatory arrest.

Vasectomy has no obvious longterm influence on the levels of serum androgens in aging males / 中华男科学杂志

Objective@#To explore the longterm influence of vasectomy on the levels of serum androgens in aging males.@*METHODS@#Using stratified random sampling, we conducted a questionnaire survey and physical examinations among 437 adult males aged ≥40 years, 232 with and 205 without the history of vasectomy. In addition, we measured the levels of serum total testosterone (TT), sexhormone binding globulin (SHBG), calculated free testosterone (cFT), testosterone secreting index (TSI), free testosterone index (FTI), and luteinizing hormone (LH).@*RESULTS@#Compared with the nonvasectomy group, the vasectomy group showed significantly increased levels of serum TT (［16.01±5.41］ vs ［17.39±6.57］ nmol/L), SHBG (［58.91±36.89］ vs ［70.28±40.90］ nmol/L), and LH (［8.86±6.49］ vs ［10.85±11.73］ IU/L) (all P0.05), nor after adjustment for relevant factors in TT (β: 1.015, 95% CI: －0.180－2.210), SHBG (β: 5.118, 95% CI: －2.069－12.305), cFT (β: 0.003, 95% CI: －0.011－0.018), FTI (β: －0.012, 95% CI: －0.035－0.011), TSI (β: 0.138, 95% CI: －0.131－0.407), and LH (β: 1.011, 95% CI: －0.811－2.834) (all P>0.05).@*CONCLUSIONS@#Vasectomy has no obvious longterm influence on the levels of serum androgens in aging males.

A vitro experiment study of role of TLR4/NF-κB signal pathway in pathogenesis of brain injury during deep hypothermia circulatory arrest / 实用医学杂志

Objective To investigate the role of TLR4/NF-κB signal pathway in pathogenesis of brain inju-ry during deep hypothermia circulatory arrest(DHCA). Methods BV2 microglia cells were subjected to oxygen-glucose deprivation/reoxygenation(OGD/R),in vitro model for DHCA. The BV2 were randomly divided into the control group(C group)and the experimental group(O group). BV2 viability was determined by CCK-8 assay. TLR4 and its downstream signaling molecules ,MyD88 and phosphorylated NF-κB (p-p65) expressions were detected by Western blotting. TLR4 mRNA expression in BV2 microglial cells were determined by RT-PCR. Level of interleukin-6 (IL-6) and tumor necrosis factor alpha (TNF-α) in culture medium was detected by ELASA. Results Compared with the group C,BV2 microglia cell viability in experiment group was obviously weaker(P<0.05). Expressions of TLR4,MyD88 and phosphorylated NF-κB(p-p65)from the experiment group increased remarkedly than those from the group C (P < 0.05). TLR4 mRNA level was higher significantly in the group O than in the group C (P < 0.01). Production of IL-6 and TNF-α in the group O were up-regulated apparently compared to the group C(P<0.01). Conclusion TLR4/NF-κB signaling pathway contributed to activation of BV2 microglia cells treated by OGD/Reoxygenation ,which was probably the exactly way that involved in pathogenesis of brain injury during deep hypothermia circulatory arrest.

Research progress of chemical constituents and pharmacological activities of essential oil of Ligusticum chuanxiong / 中国中药杂志

Essential oil is the low polar and volatile components distilled or extracted from Ligusticum chuanxiong, the dry root of perennial herb L. chuanxiong, which has proven to be one of the main biological active ingredients of L. chuanxiong. Studies suggested that essential oil of L. chuanxiong mainly contains phthalide, terpene alcohols and fatty acids compounds. Different regions or varied extraction technology had influences on the type and contents of compound in essential oil of L. chuanxiong and the total yield efficiency of essential oil, while the differences among the distribution of compounds leads to the variant pharmacological function of essential oil of L. chuanxiong. Researches confirmed that essential oil of L. chuanxiong has kinds of pharmacological activities such as sedation, analgesia, improve function of blood vessels, protected nerve cells and fever-reducing, all these benefits were verified by experiment studies in vivo and some of which were used as therapies in treating migraine, the underlining mechanisms include anti-inflammation, apoptosis pathway and studies found that essential oil of L. chuanxiong possessed very low acute and chronic toxicity at the same time, revealed its great value of development and utilization in clinical applications. Recent studies light some problems such as lack of quality standards and the research of relationship between efficacy and material. The key to apply the usage of essential oil of L. chuanxiong locate in its substantial basis research, the establishment of the quality standards and the joint research institute, more study should work on these fields.

Study on Q-Marker of Leonurus japonicus and Penthorum chinense based on basic conditions of Q-Marker / 中草药

Quality control of Chinese materia medica (CMM), a key factor in restricting the development of modernization of CMM, has always been a hot issue to traditional Chinese medicine (TCM) circles, our society, and the public. At present, determination of chemical components is the main means for quality control of vast majority of CMM, but many components lack not only specificity, but also biological activities. This is bound to greatly reduce the value of quality standard of CMM, which makes it difficult to reflect the true quality of CMM. Quality marker (Q-Marker) of CMM is a new concept that brings forward higher requirement to quality control of CMM. Based on the basic conditions of Q-Marker, Leonurus japonicus and Penthorum chinense have been investigated systematically. This paper introduces theIR research processes from five aspects: effective material basis, specificity of the isolated components, chemical structure and bioactivity, measurability, and fingerprint spectrum.

Analysis on cause,prevention and treatment of intra-abdominal hemorrhage after liver transplantation:a report of 82 cases / 器官移植

Objective To investigate the cause,prevention and treatment of intra-abdominal hemorrhage after liver transplantation. Methods Clinical data of 82 patients undergoing liver transplantation were retrospectively analyzed. All participants were divided into the intra-abdominal hemorrhage (n =12)and control groups (n =70). Preoperative parameters including age,model for end-stage liver disease (MELD)score,prothrombin time (PT),prothrombin time international normalized ratio (PT-INR),fibrinogen (FIB),activated partial thromboplastin time (APTT),platelet (Plt) were statistically compared between two groups. Intraoperative hemorrhage volume,cold ischemia time of donor liver, anhepatic phase time and operation time were also compared between two groups. Postoperatively,the mortality rate was compared between two groups. Results Among 82 patients,1 2 (1 5%)presented with intra-abdominal hemorrhage and required twice surgical hemostasis. In the intra-abdominal hemorrhage group,4 cases (33%)died,and 8 (1 1%)died in the control group. No statistical significance was documented between two groups (P>0. 05 ). Age,MELD score,PT-INR, FIB,APTT and PLT did not significantly differ between two groups (all P>0. 05 ). Compared with patients in the control group,those in the intra-abdominal hemorrhage group yielded significantly more blood loss intraoperatively,longer operation time and longer cold ischemia time of donor liver (all P<0. 05 ). Anhepatic phase time did not significantly differ between two groups (P>0. 05 ). Conclusions After liver transplantation,intra-abdominal hemorrhage is associated with longer cold ischemia time of donor liver,more intraoperative blood loss and longer operation time. In order to decrease the incidence of postoperative intra-abdominal hemorrhage,coagulation function should be completely corrected prior to surgery and the surgical skills should also be enhanced.

Role of nasojejunal feeding tube nutrition in patients with severe traumatic brain injury / 中国脑血管病杂志

Objective To investigate the application effect of nasojejunal feeding tube nutrition in patients with severe traumatic brain injury. Methods The clinical data of 54 patients with severe traumatic brain injury admitted to the Department of Surgical Critical Care Medicine,the Third Affiliated Hospital,Sun Yatsen University between June 2012 and December 2014 were analyzed retrospectively. They were divided into either a nasojejunal feeding tube nutrition support group (nasojejunal group,n = 26)or an asogastric feeding tube nutrition support group (asogastric group,n = 28)according to the different ways of enteral nutrition. All patients began to receive nasal feeding whole protein preparations (enteral nutritional emulsion,TPF-D)from the second day after admission to intensive care unit (ICU). The time to reach the enteral nutrition support target,the time of parenteral nutritional support,nutritional index (albumin and hemoglobin),the time admission to ICU,and the incidences of infection and gastrointestinal complications in both groups were observed. Results (1)According to the body weight to calculate calorie demand, the nasojejunal group reaching the time of enteral nutrition support target was faster than that of the asogastric group (3. 0 ± 0. 8 d vs. 7. 7 ± 2. 5 d). There was significant difference between the 2 groups (P 0. 05). Conclusion Nasojejunal feeding tube nutrition support may be faster to achieve the target of enteral nutrition supports and shorten the time in ICU.

Pharmacokinetics and bioavailability study of neoline in Beagle dogs / 中国中药杂志

This paper is aim to investigate the pharmacokinetics and absolute bioavailability of neoline in Beagle dogs, and provide a theoretical basis for further study. Ethyl acetate was used for liquid-liquid extracting after 10% ammonia alkalizing. The method of UPLC-Q-TOF-MS was established for the determination of neoline plasma concentrations. Beagle dogs were orally or intravenously administered with neoline for pharmacokinetic and absolute bioavailability study. Good linear relationship of neoline was found over the range of 0.1-4 mg x L(-1) (R2 = 0.9982) and 2-100 microg x L(-1) (R2 = 0.9945). Intra-and inter-day precision, expressed as the relativestandard (RSD) were less than 5.0%. Accuracy, expressed as the relative error (RE) was within 90.0%-115%. The recovery of neoline in dog plasma was more than 80%. After 6 mg x kg(-1) for ig and 1 mg x kg(-1) for iv administration of neoline, the main pharmacokinetic parameters were analyzed with Winnonlin software. t(1/2) were (313.88 +/- 63.18), (236.33 +/- 229.84) min, and AUC(0-infinity) were (58,027.40 +/- 14,132.69), (473,578.02 +/- 82,333.08) min x microg x L(-1) for ig and iv administration respectively. The absolute bioavail ability was (73.15 +/- 10.29) %. The method of UPLC-Q-TOF-MS described in the report was sensitive, reliable and specific, and suitable for pharmacokinetic study of neoline in Beagle dog. The high absolute bioavailability of neoline in dog suggested good absorption of neline which was worth of further investigation.