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Chinese Journal of Clinical Nutrition

2002 (v1, n1) to Present ISSN: 1671-8925

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Protective effect of the combination of glutamine and arginine on intestinal barrier function in rats receiving fluorouracil chemotherapy

Fuming LEI ; Xuening DUAN ; Zhizhong PEN ; Shihua CUI

Chinese Journal of Clinical Nutrition.2009;17(6):354-358,illust 1. doi:10.3760/cma.j.issn.1674-635X.2009.06.011

Objective To investigate the protective effect of the combination of glutamine (Gln) and ar-ginine (Arg) on intestinal barrier function in rats receiving fluorouracil (5-FU) chemotherapy.Methods Totally 40 male SD rats receiving 5-FU chemotherapy were equally randomized into four groups:enteral nutrition group,Gln group (enteral nutrition+Gln),Arg group (enteral nutrition+Arg),and Arg+Gln group (enteral nutri-tion+Arg+Gln).Observe the changes post chemotherapy such as the changes of body weight and urine lactulose/mannitol ratio before and after chemotherapy were recorded.On the 8 th post-therapy day,the blood endotoxin level in portal vein was measured,and lymph nodes and blood in portal vein were taken for bacterial culture;colon and jejunum specimens were also taken to measure the height of jejunum villus and the thickness of colon and jejunum.Results Body weights of Gln group,Arg group,and Arg+Gln group significantly increased after chemotherapy (P<0.05).The change of body weight was significantly lower in Arg+Gln group than in Gln group (P=0.002),while no such difference was found when compared with that in Arg group (P>0.05).Lactulose/manni-tol ratio in each group significantly increased after chemotherapy (P<0.05),and the change of lactulose/mannitol ratio was significantly higher in the enteral nutrition group than those in other groups (P=0.000);however,no such difference was found among other groups (P>0.05).The blood endotoxin level in portal vein was signifi-cantly higher in enteral nutrition group than in other groups (P=0.000);the endotoxin level was significantly lower in Gln group than in Arg group (P=O.035) and Arg+Gln group (P=0.000);however,no such differ-ence was found between Arg group and Arg+Gln group (P=0.109).The height of jejunum villus and the thick-ness of jejunum were significantly lower in enteral nutrition group than those in the other groups (P=O.000);the thickness of colon was significantly lower in enteral nutrition group than those in Arg group and Arg+Gln group (P=0.000);however,no such difference was found when compared with Gln group (P=0.058).The thickness of colon (P=0.040) and jejunum (P=0.010) was significantly higher in Gln group than that in Arg group;but there was no significant difference in term of the height of jejunum villus (P=0.286).Compared with Arg+Gln group,the thickness of jejunum in Gln group was significantly higher,but there was no significant difference in terms of the height of jejunum villus (P=0.286) or the thickness of jejunum (P=0.190).The thickness of co-lon was significantly lower in Arg group than in Arg+Gln group (P=0.010),while no such significant difference was found in terms of the height of jejunum villus (P=0.803) or the thickness of colon (P=0.059) when com-pared with Arg+Gln group.The bacterial culture results were not significantly different among all groups.Conclu-sions The combination of Arg and Gln has protective effects on intestinal barrier in rats receiving 5-FU chemother-apy.The protective effect of Gln is superior to that of Arg.No synergistic effect exists between Arg and Gln.

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Effects of apigen on repairing articular cartilage defects by BMP-7 cells in rabbits

Wei LIU ; Xuesong ZHU ; Xinhui ZHU ; Hong YI ; Tiansi TANG ; Huilin YANG

Chinese Journal of Clinical Nutrition.2012;(6):369-373,后插1. doi:10.3760/cma.j.issn.1674-635X.2012.06.008

Objective To study the effect of apigen on articular cartilage repair involving chondrocytes transfected with bone morphogenic protein-7 (BMP-7).Methods lnterleukin (IL-8) and soluble intercellular adhesion molecule-1 (sICAM-1) were induced by IL-1 β in rabbit chondrocytes.After apigen at different concentrations (10 μmol/L,25 μmol/L,and 50 μmol/L) was added into the culture system,the effect of apigen on IL8 and sICAM-1 production was observed using enzyme linked immunosorbent assay.Then chondrocytes were seeded on improved matrigel gel bracket and culturedin vitro to construct the compound,which was then transplanted into the rabbit model of articular cartilage defection.The rabbits were randomly divided into sham group (n =4),trans-BMP-7 group (n =4),and trans-BMP-7 + apigen group (n =4).Histological observation was conducted and Wakitani score calculated after 5 weeks.Results The concentrations of IL-8 and sICAM-1 in the chondrocytes supernatant in vitro significantly decreased after apigen treatment at 10 μmol/L,25 μmol/L,and 50 μmol/L [(6803.63 ±162.31) ng/g,(6005.74 ±201.49) ng/g,and (5202.34 ±271.67) ng/gvs.(10011.84±239.29) ng/g ; P =0.00].Five weeks after the cartilage cells on matrigel gel bracket were transplanted into rabbit models,the Wakitani scores of the trans-BMP-7 group and the trans-BMP-7 + apigen group were significantly lower than that of the sham group [(3.68 ± 0.86) vs.(8.25 ± 0.90),P =0.00 ; (3.21 ± 0.78) vs.(8.25 ±=0.90),P =0.00].In addition,no inflammatory reaction was noted during the repair in the trans-BMP-7 + apigen group.Conclusion Apigen can promote the construction of compound and repair of articular cartilage defects by trans-BMP-7 chondrocyte.

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Effects of Astragalus polysaccharides on 2,4,6-trinitrobenzenesuifonic acid-induced colitis in rats

Yongjian GAO ; Feng ZHU ; Jiaming QIAN

Chinese Journal of Clinical Nutrition.2010;18(4):209-213,illust 2. doi:10.3760/cma.j.issn.1674-635X.2010.04.04

Objective To investigate the effects of Astragalus polysaccarides (APS) on 2,4,6-trinitrobenzenesulfonic acid (TNBS)-induced colitis in rats. Methods Forty male Sprague-Dawley rats were randomly divided into five groups (n = 8 ): control group, TNBS group, low-dose APS group, high-dose APS group, and prednisone group. Experimental colitis was induced in rats by enema administration of TNBS. Rats in APS and sions and histological damages were determined, and the activity of myeloperoxidase (MPO) was measured in the excised colonic tissues. Cytokine levels including interleukin (IL)-4 and IL-10 were determined by enzyme-linked immunosorbent assay. Results Both macroscopic lesions and histological colonic damages induced by TNBS were reduced by low-dose APS treatment. These were accompanied by significantly attenuated colonic MPO activity (P = 0. 03) and the increase of IL-4 and IL-10 levels. The macroscopic lesions and MPO activities of high-dose APS group were higher than TNBS group, histological damage and level of IL-4 were lower, and level of IL-10 was higher, but all without statistical significance. Levels of IL-4 and IL-10 were lower than those of TNBS group, but there was no significant difference between prednisone group and TNBS group. Levels of IL-4 and IL-10 were significantly lower in prednisone group than in control group ( P = 0. 049, P = 0. 001 ). Conclusions Different doses of APS have different effects on TNBS-induced colitis. Lower dose of APS has the therapeutic potential inexperimental colitis, while higher dose of APS may aggravate the disease.

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Effect of total nutrient admixture on lipid metabolism in acute hepatic failure rats

Yumei QI ; Ming ZHANG ; Yajun CHEN ; Jin XU ; Hui YANG

Chinese Journal of Clinical Nutrition.2009;17(1):41-44,后插1. doi:10.3760/cma.j.issn.1674-635X.2009.01.012

Objective To study the effect of total nutrient admixture (TNA) on lipid metabolism in rats with acute hepatic failure (AHF). Methods Fifty-six male Wistar rats were randomly divided into four groups: normal diet group, nitrogen-free diet group, fat-free nutrient admixture group, and TNA group. All rats were injected with D-galac- tosamine to induce AHF model Meanwhile, 6 healthy Wistar rats were used as control group. TNA provided energy 221.75 kJ (1 kcal=4.184 kJ), nitrogen 0.365 g, nitrogen to energy ratio 1:145, amino acids 2.28 g (including branched-chain amino acid 0.70 g), glucose 7.85 g, and fat 1.25 g on a daily basis. After 10 days of the operation of Jugular vein puncture tube, blood glucose, blood lipid, liver and renal function were determined. Results The blood glucose level was significantly higher in TNA group than that in fat-free nutrient admixture group (P < 0.05). The levels of serum triglyceride and cholesterol were highest in fat-free nutrition admixture group, and triglyceride level was signif- icantly higher than that in normal diet group and nitrogen-free diet group (P <0.05). The levels of serum triglyceride and cholesterol were significantly higher in TNA group than those in normal diet group (P <0.05). The levels of ala- nine aminotransferase, alkaline phosphatase, total bilirubin and blood urea nitrogen were lower in TNA group than those in fat-free nutrient admixture group (P < 0.05). Conclusion The nutritional proportion of TNA is suitable for the metabolism disorder of hepatic failure, and therefore TNA can reasonably promote the anabolism and reverse the deteri- oration of hepatic failure in rats.

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Longitudinal observations of the prevalence of nutritional risk and undernutrition in patients with head and neck cancer during radiotherapy

Sanli JIN ; Qian LU ; Dong PANG ; Ping YANG ; Shuang SHI

Chinese Journal of Clinical Nutrition.2017;25(1):22-28. doi:10.3760/cma.j.issn.1674-635X.2017.01.003

Objective To investigate the changes in prevalence of nutritional risk and undemutrition in patients with head and neck cancer during radiotherapy.Methods In this longitudinal observational study,a convenience sampling method was used to recruit patients with head and neck cancer who were receiving radiotherapy in Beijing Cancer Hospital.Nutritional Risk Screening 2002 (NRS 2002) was applied to assess the prevalence of nutritional risk in the patients,and Patient-Generated Subjective Global Assessment (PG-SGA) and body composition test to determine the prevalence of malnutrition (undernutrition) before,during and after radiotherapy.Results 56 patients finished the three follow-up exams.Along with the progress of radiotherapy,the scores of NRS 2002 increased gradually (1.64±1.09 vs.2.30 ±1.06 vs.3.14 ±1.07,x2 =46.639,P<0.001),and the prevalence of nutritional risk also increased gradually (21.43% vs.37.50% vs.71.43%,x2 =29.700,P <0.001);the total scores of PG-SGA [1 (1-13) vs.6 (1-15) vs.12 (1-18),x2 =63.206,P<0.001] and dimensions of weight [0 (0-4) vs.1 (0-4) vs.3 (0-6),x2 =40.798,P<0.001],intake [0 (0-2) vs.1 (0-2) vs.2 (0-4),x2=64.707,P<0.001] and symptoms [0 (0-7) vs.2 (0-10) vs.6 (0-11),x2 =61.562,P < 0.001] all increased gradually with statistical significance.The prevalence of malnutrition in different stage of radiotherapy were significantly different (x2 =64.999,P < 0.001).The body composition analysis in 40 patients showed that all the indicators of body composition decreased significantly along with the progress of radiotherapy.There was a great loss in patients' body weight during radiotherapy,especially the fat-free mass.Conclusions The prevalence of nutritional risk and undernutrition may increase in patients with head and neck cancer during radiotherapy.Lean body mass accounted for most of the weight loss.We should pay more attention to those patients' nutritional status during radiotherapy.

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Medical nutritional therapy for patients with gout and hyperuricemia: a systemic review

Rongrong LI ; Kang YU

Chinese Journal of Clinical Nutrition.2017;25(1):12-21. doi:10.3760/cma.j.issn.1674-635X.2017.01.002

Objective To evaluate the dietary risk factors and rational nutritonal intervention for gout and hyperuricemia.Methods PubMed,EMBASE,OVID,Cochrane Library,China National Knowledge Infrastructure (CNKI),and Chinese Wanfang Database were searched for literature related to dietary risk factors and medical nutritonal intervention for gout/hyperuricemia from January 2000 to December 2015.Strict screening of the searched literature was performed based on inclusion and exclusion criteria.The bias risk evaluation tool recommended by the Cochrane Handbook and the Newcastle-Ottawa Scale (NOS) scale were used to assess the quality of included literature.With odds ratios (OR) of gout/hyperuricemia for subjects with different dietary preferences as the main effect indicator,a meta-analysis was conducted,with data collected from literature and summarized by RevMan 5.1 software.Results Nine studies were included eventually.Compared with subjects with lowest intake of red meat,seafood,alcohol,sweented soft drinks or natural juice,the OR for gout/hyperuricemia among subjects with highest intake of these foods was 1.39 (95% CI:1.18-1.63,P <0.0001),1.59 (95% CI:1.33-1.90,P<0.00001),3.14 (95% CI:2.17-4.53,P<0.00001),1.69 (95% CI:1.17-2.43,P =0.005),and 1.46 (95% CI:1.18-1.80,P =0.000 5),respectively.In contrast,compared with subjects with lowest intake of dairy products,vegitables (containing purine-rich vegetables) or coffee,the OR for gout/hyperuricemia among subiects with highest intake of these foods was 0.50 (95% CI:0.40-0.64,P<0.00001),1.01 (95% CI:0.85-1.19,P=0.95),0.48 (95% CI:0.30-0.78,P =0.003),respectively.Conclusions Patients with gout or hyperuricemia should avoid or restrict the intake of high-purine animal foods (especially red meat and seafood),alcohol,high fructose or corn syrupsweetened foods,while abstinence of purine-rich vegetables is not required.Regular intake of dairy products and coffee is recommended for such patients.

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Nutritional risk screening and nutritional assessment: definition, clinical practice, and possible pitfalls

Jian YANG ; Ming ZHANG ; Zhuming JIANG ; Kang YU ; Weigang ZHAO ; Qian LU ; Mingwei ZHU ; Jingyong XU ; Minjie ZENG ; Hongxia XU

Chinese Journal of Clinical Nutrition.2017;25(1):59-64. doi:10.3760/cma.j.issn.1674-635X.2017.01.009

Nutritional support therapy includes three main components:nutritional screening,nutritional assessment,and nutritional intervention.It is important to emphasize that nutritional screening and nutritional assessment are two different concepts and definitions,which are often confusing for many physicians,nurses,and dietitians.In this review,we present an overview on the main concepts about nutritional screening and nutritional assessment,highlight their features and complementarity,and discuss the future perspectives in the clinical practice.

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Positioning of peripherally inserted central catheters tips using intracavitary electrocardiogram

Xiaowei FU

Chinese Journal of Clinical Nutrition.2017;25(1):53-58. doi:10.3760/cma.j.issn.1674-635X.2017.01.008

Objective To explore the value of using the characteristic P wave of the intracavitary electrocardiogram (ECG) in positioning the tips of the peripherally inserted central catheters (PICC).Methods Totally 201 patients with PICC from December 1,2015 to February 29,2016 were enrolled in this study.The characteristic P wave of the intracavitary ECG was applied to locate the PICC tips.The pre-determined depth of catheter insertion (Y),highest P wave (L),and actual insertion depth (Z) were recorded.Chest radiography was performed after a successful insertion of PICC.The optimal depth (H) was recorded.Then we observed the sensitivity of P wave in positioning PICC tips,the operative time of positioning PICC tip with intracavitary ECG,and the difference in the predicted depth and the actual depth of PICC insertion.Results The sensitivity of the intracavitary ECG in positioning PICC tips was 100%.The operation time of the intracavitary ECG in guiding PICC tip was significantly shorter than the that of ultrasonic diagnosis of ectopic PICC [(3.4 ± 2.4) min vs.(5.6 ± 3.4) min] (P =0.006 9).The actual depth of ECG-guided positioning was significantly more accurate than the predicted depth [(0.4 ± 0.1) cm vs.(3.9 ± 0.8) cm] (P =0.007 2).L minused Z averaged (4.3 ± 1.6) cm.Conclusion Positioning PICC tips with ECG is simple,accurate,and easy to learn,and it is worth to be widely used in clinical settings.

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Glutamine supplementation provides neuroprotection by inhibiting endoplasmic reticulum stress response after traumatic brain injury in rats

Yasong LI ; Xiangrong CHEN ; Shukai WU ; Liangqin LUO ; Weipeng HU

Chinese Journal of Clinical Nutrition.2017;25(1):47-52. doi:10.3760/cma.j.issn.1674-635X.2017.01.007

Objective To investigate the effects of glutamine (Gln) supplementation on neurologica severity score,brain edema,neuron apoptosis,and endoplasmic reticulum stress (ERS) response after traumatic brain injury (TBI) in rats.Methods TBI rat models were established using modified Feeney's method.Eighty Sprague-Dawley rats were divided into 4 groups with a random number table:sham operation group (Sham group),TBI group,Gln supplementation group (TBI + Gln group) and ERS inducer 2-deoxy-D-glucose group (TBI +Gln + 2-DG group).We measured the rats' neurobehavioral outcomes by modified neurologic severity score (mNSS) on day 1,3,7 and 14 after TBI.Neuron apoptosis was detected using TUNEL staining.Brain water content was measured with wet-dry weight method.The apoptosis-related protein (caspase-12,caspase3,and Bcl-2) and ERS-related cytokines [inositol-requiring enzyme 1 (IRE-1),C/EBP homologous protein (CHOP)] expressions in TBI cerebral cortex were determined by immunohistochemistry staining and Western blot.Results Compared with the Sham group,the levels of brain edema,mNSS,apoptosis-related protein (caspase-12,caspase-3,Bcl-2) and ERS-related proteins (IRE-1,CHOP) were significantly increased in the other three groups (all P =0.00).Compared with the TB1 group,the TBI +Gln group showed significant lower brain water content [3 d:(81.39±0.59)% vs.(83.54±0.52)%,P=0.04;7 d:(74.86±0.38)% vs.(77.32±0.66)%,P=0.03],improved mNSS (8.63 ±0.22 vs.10.37±0.29,P=0.03),suppressed expressions of apoptosis-and ERS-related proteins (caspase-12,caspase-3,IRE-1,and CHOP)(P =0.01,P < 0.01),and increased expression of anti-apoptotic protein Bcl-2 (P =0.02).Compared withthe TBI + Gln group,the expression of ERS-related factors (IRE-1 and CHOP),brain edema level,and neurological severity were increased in the TBI + Glu + 2-DG group.Conclusion Glutamine supplementation may have neuroprotection function,demonstrated as reducing brain edema and neuron apoptosis,and improving neurobehaviroal outcomes after TBI,possibly mediated by inhibiting TBI-induced ERS response.

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Clinical manifestations, neuroimaging features, treatment, and follow-up in four pediatric patients with glutaric aciduria type Ⅰ

Qi LIU ; Chan XIA ; Wei CHEN ; Wanding YE ; Yiping CHEN

Chinese Journal of Clinical Nutrition.2017;25(1):40-46. doi:10.3760/cma.j.issn.1674-635X.2017.01.006

Objective To investigate the clinical features,magnetic resonance imaging (MRI),treatment,and follow-up of patients with glutaric aciduria type Ⅰ (GA-1).Methods Four pediatric patients with GA-1 diagnosed in our hospital were included in this study.They were treated with special diets and carnitine supplements.MRI and tandem mass spectrometry (MS/MS) were performed,and the mental development indices were measured.Results GA-1 was confirmed 2 months,13 months,4 months,and 7 months after birth.Seizure had been observed before the disease diagnosis in three patients and disappeared after treatment.In all four patients,T2-weighted brain MRI showed frontotemporal atrophy or hypoplasia and enlarged subarachnoid space in the sylvian fissures and anterior to the temporal lobes.Diffusion weighted imaging revealed high-density lesions over both the putamen and globus pallidus.The patients were followed up for 4 to 5 years.Plasma amino acids and acylcamitine profile were monitored every 3-5 months.The mean C5DC level and C5DC/C8 were kept the higher limits of the normal ranges,especially in case 3.During the follow-up,the body weight was at-2 SD-0 and the height at-1 SD-0.Intellectual development test showed that case 1 and case 4 had mildly abnormal intelligence,whereas case 2 and case 3 had extremely severe intellectual disability.Gene test confirmed the presence of gene mutations in all four cases,including IVS10-2A > C homozygous mutation in cases 1,3,and 4 and [IVS10-2A > C] + [c.245G >c(p.Arg82Pro)] hybrid mutation in case 2.Two female children were smoothly enrolled by local kindergarten,while two male children were unable to walk alone due to delayed motor development and spastic paralysis.Conclusions The phenotype of GA-1 patients is not remarkably correlated with its genotype correlation.Newborn screening is essential for identifying GA-1 patients.

Country

China

Publisher

中华医学会; 中国医学科学院

ElectronicLinks

http://www.cjcn.cn

Editor-in-chief

E-mail

cjcn1993@imicams.ac.cn

Abbreviation

Chinese Journal of Clinical Nutrition

Vernacular Journal Title

中华临床营养杂志

ISSN

1674-635X

EISSN

Year Approved

2008

Current Indexing Status

Currently Indexed

Start Year

1993

Description

Previous Title

Chinese Journal of Clinical Nutrition

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