短肠综合征肠适应机制研究进展

短肠综合征残余肠道代偿是一个复杂的过程.许多因素对肠道代偿作用虽然在动物实验中已得到证实,但在临床应用中仍存有争议.阐明肠代偿机制对促进短肠病人残余肠道代偿功能具有重要的指导意义.     

Intestinal rehabilitation for children with short bowel syndrome

Three children, 2 boys aged 5 and 4 years, and 1 girl aged 2 years, who suffered from intestinal failure as a result of a short bowel syndrome and who were dependent on total parenteral nutrition (TPN), were screened for small bowel transplantation. The girl also had progressive liver failure. Each child had a clear indication for either isolated small bowel or combined small bowel/liver transplantation. All three children were enrolled in an intestinal rehabilitation program because they were referred early. The intestinal rehabilitation consisted of a systematic analysis of the absorptive capacity of the residual intestine, optimizing enteral and parenteral feeding, prevention of catheter sepsis and further deterioration of liver function. The rehabilitation was performed in an in-patient setting. All three children were partially weaned from TPN, while their growth improved. None of the children were consequently listed for small bowel transplantation. When a child is initially referred for small bowel transplantation, intestinal rehabilitation should be considered as part of an intestinal transplantation program.     

Nutrient intake from habitual oral diet in patients with severe short bowel syndrome living in the southeastern United States

OBJECTIVES: Little data are published on the habitual home oral diet of patients with short bowel syndrome (SBS). METHODS: We assessed nutrient intake from oral food and beverages in 19 stable patients with severe SBS who live in the southeastern United States. Intestinal absorption of energy, fat, nitrogen (N), and carbohydrate (CHO) was determined in a metabolic ward. RESULTS: We studied 12 women and 7 men, age 48 +/- 3 y of age (mean +/- SE) receiving parenteral nutrition for 31 +/- 8 mo following massive small bowel resection (118 +/- 25 cm residual small bowel). The patients demonstrated severe malabsorption of energy (59 +/- 3% of oral intake), fat (41 +/- 5%), N (42 +/- 5%) and CHO (76 +/- 3%). Oral energy intake was 2656 +/- 242 kcal/d (39 +/- 3 kcal/kg/d) and oral protein intake was 1.4 +/- 0.1 g/kg/d. Food/beverage intake constituted 49 +/- 4% of total (enteral plus parenteral) daily fluid intake, 66 +/- 4% of total daily kcal and 58 +/- 5% of total daily N intake. Oral fat intake averaged 92 +/- 11 g/day ( approximately 35% of total oral energy). Oral fluid intake averaged 2712 +/- 240 ml/d, primarily from water, soft drinks, sweet tea and coffee. Simple sugars comprised 42 +/- 3% of oral CHO intake. Usual dietary intake of multiple micronutrients were below the Recommended Dietary Allowances (RDA) in a large percentage of patients: vitamin A (47%), vitamin D (79%), vitamin E (79%), vitamin K (63%), thiamine (42%), vitamin B6 (68%), vitamin B12 (11%), vitamin C (58%), folate (37%), iron (37%), calcium (63%), magnesium (79%) and zinc (68%). Only seven patients (37%) were taking oral multivitamin-mineral supplements and only six subjects (32%) were taking oral iron and calcium supplements, respectively. CONCLUSION: In these SBS patients, an oral diet provided a significant proportion of daily nutrient intake. The types of foods and fluids consumed are likely to worsen malabsorption and thus increase PN requirements. Oral intake of essential micronutrients was very low in a significant proportion of these individuals.     

Dipeptidyl-peptidase IV in patients with short bowel syndrome

BACKGROUND & AIMS: The aim of this study was to determine serum dipeptidyl peptidase IV (DPP IV) levels in a population of short bowel syndrome (SBS) patients, who had achieved intestinal adaptation. METHODS: DDP IV reference values were determined in a healthy population (n=47). The SBS study group consisted of 30 patients (17 men, 13 women; 53.2+/-13.2 years). The criteria for inclusion were a remnant small bowel <200cm with or without colon resection. The time interval between resection and DPP IV measurement was >24 months except in 4 patients, in which it was 13-24 months (total mean: 64.7+/-47.3 months). Nutritional support was exclusively oral in 17 patients, oral plus cyclic TPN in 12 and TPN alone in one patient. RESULTS: The reference range for DPP IV was 10-23U/l (mean: 16.01+/-3.2). In the group of SBS patients, mean serum DPP IV was 14.02+/-3.6U/l and mean body mass index 22.07+/-4.1kg/m(2). Eleven patients (36.6%) had hyperphagia and mean DPP IV in this group was 15.2+/-4.9U/l. CONCLUSIONS: Measurement of DPP IV levels in this limited series of SBS patients who had reached intestinal adaptation showed normal levels and did not provide additional clinical information. Further analysis in the earlier postoperative period will determine whether this enzyme has a role as an indicator of evolution in these patients.     

Quality of life and concerns in patients with short bowel syndrome

BACKGROUND & AIMS: the life situation in patients with short bowel syndrome was described, with focus on aspects of quality of life, worries, concerns and coping. METHODS: Twenty-eight patients (19F/9 M) participated. Mean age was 54. Eight were on home parenteral nutrition (HPN). Quality of life was recorded using a visual analogue scale. Health-related quality of life (HRQOL) was assessed using Short Form 36 (SF -36) and compared with matched controls. Concerns were assessed using Rating Form of Inflammatory bowel disease patient concerns (RFIPC). Coping strategies were investigated using Jalowiec coping scale (JCS 40). RESULTS: Greatest concerns were fear of being a burden, having surgery and loss of energy. HRQOL was significantly reduced compared to controls. Patients' receiving HPN rated quality of life lower than those without HPN. The presence of a stoma appeared not to influence quality of life negatively but stoma patients expressed more concern. Confrontational coping style was most frequently used. CONCLUSION: HRQOL was low both in the HPN group and the non-HPN group. Having a stoma did not affect quality of life negatively. Fear of being a burden was the most frequently expressed concern, in the whole group as well as in subgroups. This information should be integrated into the care of these patients.     

Hyperhomocysteinemia is associated with venous thrombosis in patients with short bowel syndrome

BACKGROUND: Hyperhomocysteinemia is associated with venous thrombosis and vitamin deficiency. Patients with short bowel syndrome have increased risk of venous thrombosis due to central catheters, and of vitamin deficiency due to malabsorption. The current investigation was designed to evaluate the relationship between history of venous thrombosis and current hyperhomocystinemia and vitamin deficiency in patients with short bowel syndrome. METHODS: Plasma total homocysteine (tHcy), serum vitamin B12, folate, B6, and methylmalonic acid (MMA) were measured. Venous thrombosis was documented by venogram or ultrasound. RESULTS: Ten of 17 patients had venous thromboses, including 17 of 38 observed superior and 12 of 26 inferior veins. Total homocysteine was correlated with number of thromboses. The relative risk of multiple thromboses in the highest tHcy tertile was 3.6-fold that of the lowest tertile. Vitamin B12 and folate levels were within normal limits, but B12 deficiency by MMA or tHcy level was apparent in 7 patients. Vitamin-deficient patients had higher tHcy and MMA than those without deficiency. CONCLUSIONS: Venous thrombosis in patients with short bowel syndrome is related to hyperhomocystinemia, which is also related to vitamin B12 deficiency, not detected by serum vitamin B12 concentration. Whether treatment of vitamin deficiencies and associated reduction in tHcy will reduce recurrent venous thrombosis in these patients is not known.     

D-Lactate associated encephalopathy in short bowel syndrome: management with long-term non-absorbable oral antimicrobials

We describe a child with short bowel syndrome consequent upon jejunal atresia who developed recurrent episodes of D-Lactate associated encephalopathy. Three species of lactobacillus were isolated from the stool, each sensitive to neomycin. Oral neomycin administration resulted in rapid relief of all symptoms. Cessation of the neomycin on two occasions led to recurrent encephalopathic episodes which quickly resolved with recommencement of treatment. We discuss the possible aetiologies of this encephalopathy syndrome and the therapeutic options.     

Ingestion of ferrous sulfate increases ferremia in patients with short bowel syndrome

ObjectiveBecause short bowel syndrome is associated with iron deficiency, the objective of the present study was to monitor ferremia after the ingestion of different iron compounds and doses in enterectomized patients.MethodsThis was a randomized, double-blind, cross-over study conducted in 13 patients of both sexes in the metabolic unit of Hospital das Clínicas de Faculdade de Medicina de Ribeirão Preto-Universídade de São Paulo and was divided into two stages. Three different iron compounds, ferrous sulfate (FS), sodium iron ethylenediaminetetra-acetic acid (EDTA), and dehydrated cell fraction (DCF), were studied. The patients were randomly assigned to one of four groups receiving high-dose DCF (120 mg) and low-dose DCF (5 mg) and the two iron compounds. The subjects (n = 7) receiving high-dose DCF participated in 2 test days. All patients receiving the physiologic dose (low-dose DCF, n = 6) participated in 3 test days with a 1-mo interval between compounds. After an 8-h fast, blood samples were collected at 0.25, 0.5, 1, and 2 h. Serum iron curve and the sum of the area under the curve were calculated and adjusted according to a mixed-effect linear model (P < 0.05).ResultsSerum FS levels were higher in the 120-mg group compared with the others (P < 0.005). The mean areas under the curve for FS and EDTA at the doses of 120 and 5 mg of elemental iron were 238, 224, 177, and 153 μg/dL, respectively. The mean area under the curve for DCF was 165 μg/dL, with no significant difference between groups.ConclusionRegardless of dose, FS was the compound that resulted in higher ferremia compared with the other doses and compounds.     

Gallstone disease in patients with severe short bowel syndrome dependent on parenteral nutrition

An increased incidence of gallbladder disease is seen in patients receiving long-term parenteral nutrition (PN). Stasis is thought to play a key role in the development of gallbladder sludge and gallstone formation. The highest incidence of gallbladder disease, by previous reports, is seen in patients with terminal ileal disease or resection. Since PN-dependent patients with severe short bowel syndrome secondary to mesenteric vascular accident have both gallbladder stasis and massive small bowel resection, a retrospective study was undertaken to evaluate the incidence of symptomatic gallbladder disease in this group. Of 11 patients followed over 9 years, five met the inclusion criteria of less than 60 cm of bowel remaining, receiving PN for longer than 6 months and the initial presence of a gallbladder. All five patients developed symptomatic gallbladder disease manifested by cholecystitis or pancreatitis. Factors contributing to gallbladder stasis included poor oral intake and use of anticholinergic and analgesic drugs. Gastric hypersecretion indirectly contributed to decreased oral intake as a means to minimize stool output. As these patients often require several laparotomies during the initial hospitalization, consideration should be given to performing prophylactic cholecystectomy, especially when the potential mortality and morbidity of emergent cholecystectomy done for symptomatic gallbladder disease is taken into account.     

Serum vitamins in adult patients with short bowel syndrome receiving intermittent parenteral nutrition

Background: Short bowel syndrome (SBS) occurs after massive intestinal resection, and parenteral nutrition (PN) therapy may be necessary even after a period of adaptation. The purpose of this study was to determine the vitamin status in adults with SBS receiving intermittent PN. Methods: The study was conducted on hospitalized adults with SBS who were receiving intermittent PN therapy (n = 8). Nine healthy volunteers, paired by age and sex, served as controls. Food ingestion, anthropometry, plasma folic acid, and vitamins B₁₂, C, A, D, E, and K were evaluated. Results: The levels of vitamins A, D, and B₁₂ in both groups were similar. SBS patients presented higher values of folic acid (21.3 ± 4.4 vs 14.4 ± 5.2, P = .01) and lower values of vitamin C (0.9 ± 0.4 vs 1.2 ± 0.3 mg/dL, P = .03), α‐tocopherol (16.3 ± 3.4 vs 24.1 ± 2.7 µmol/L, P < .001), and phylloquinone (0.6 ± 0.2 vs 1.0 ± 0.5 nmol/L, P < .03). Eight‐seven percent of patients had vitamin D deficiency, and all patients presented with serum vitamin E levels below reference values. Conclusions: Despite all efforts to offer all the nutrients mentioned above, SBS patients had lower serum levels of vitamins C, E, and K, similar to those observed in patients on home PN. These findings suggest that the administered vitamins were not sufficient for the intermittent PN scheme and that individual adjustments are needed depending on the patient's vitamin status.     

Compensatory enteral hyperalimentation for management of patients with severe short bowel syndrome

In order to evaluate the effects of an unrestricted, compensatory, enteral hyperalimentation in patients with short bowel syndrome, we retrospectively selected from 128 consecutive patients with extensive small bowel resection a group of 25 who developed under this regimen a massive protracted diarrhea (fecal weight 2005-6188 g/day). All the patients but one were weaned from parenteral nutrition by the eighth day after admission. Although fecal weight increased in relation to the increase of the enteral intake, there was a significant gain of body weight, serum-albumin, and creatinine-height index and an improved fluid and electrolyte balance through the period of hospitalization. By contrast, 18 of the 25 patients developed hypocalcemia and/or hypomagnesemia. After discharge (median follow-up, three years), most patients resumed normal social activity. It is concluded that exclusively enteral hyperalimentation can stabilize most patients with severe short bowel syndrome even in the case of massive fecal losses.     

Nortriptyline absorption in short bowel syndrome

Severe short bowel syndrome usually requires a period of parenteral nutrition support until gastrointestinal hypertrophy occurs. Because of the shortened length of the gastrointestinal tract, oral drug therapy can be compromised secondary to decreased absorption. In the case presented, a patient with short bowel syndrome who required parenteral nutrition was able to achieve therapeutic nortriptyline serum concentrations while receiving the drug via the oral route.     

短肠综合征病人血清氨基酸谱的测定

目的:用高效液相色谱法检测短肠综合征病人的血清氨基酸谱. 方法:共测定17例短肠综合征病人的血清氨基酸谱,并以15例正常人空腹血作为对照,将异硫氰酸苯酯(PITC)作为柱前衍生剂,用甲醇、乙腈和乙酸钠作为二元梯度洗脱,67 min完成分离. 结果:17例短肠综合征病人血清缬氨酸、丝氨酸、胱氨酸非常显著低于正常人(P<0.01),血清亮氨酸、异亮氨酸、赖氨酸、蛋氨酸、组氨酸显著低于正常人(P<0.05). 结论:用高效液相色谱法检测氨基酸稳定可靠,短肠综合征病人存在氨基酸特别是必需氨基酸的缺乏.     

Muscle mass gain observed in patients with short bowel syndrome subjected to resistance training

Few studies are available about the evaluation of resistance training in patients with protein-energy malnutrition. To assess the effects of resistance training on the recovery of nutritional status of patients with short bowel syndrome, with a small bowel remnant of less than 100 cm, 9 patients of both sexes with protein-energy malnutrition after extensive resection of the small bowel were submitted to resistance training of progressive intensity consisting of concentric and eccentric work exercises for the upper limbs, trunk, and lower limbs, with the individuality and limitations of each patients being respected. Food consumption was monitored by 24-hour food recall performed during the initial phase of the study, before and 7 and 14 weeks after physical training, and by a dietary record for a period of 3 days of oral feeding. The nutrients administered by the enteral and parenteral route were recorded. A significant increase in total arm area (P ≤ .01) and fat-free mass (P ≤ .01) was observed as determined by computed tomography. An increase in total energy ingestion and carbohydrate consumption (P ≤ .01) was also observed. In addition, the activity of the enzyme carnosinase was increased after resistance training (P ≤ .01). The present results show that resistance training in patients with short bowel syndrome and protein-energy malnutrition can be considered to be a part of the nonmedicamentous treatment of these patients, leading to better nutrient use and to a gain of lean mass.     

肠康复治疗对短肠综合征病人残余小肠黏膜形态学的影响

目的:观察重组人生长激素(rhGH)、谷氨酰胺(Gln)和膳食纤维的肠内营养(EN)对短肠综合征病人小肠黏膜形态、肠黏膜细胞增殖和凋亡水平的改变,以评价对短肠综合征病人的治疗效果. 方法:10例短肠综合征病人联合应用rhGH 0.05 mg/(kg·d)、Gln 30 g/d和膳食纤维的EN进行3周的肠康复治疗.分别在...     

Recurrent D-lactic acidosis in a child with short bowel syndrome

D-lactic acidosis is a rare complication in children with short bowel syndrome. It results from fermentation of dietary carbohydrate by luminal bacteria in the small bowel caused by bacterial overgrowth. We present the case of a 14-year-old boy who had been diagnosed with short bowel syndrome from surgical treatment of midgut volvulus five years previously. His nutritional status was maintained by total parenteral nutrition and enteral feeding as tolerated. During hospitalization, episodic confusion and hyperpnea developed. The investigation showed severe metabolic acidosis with serum bicarbonate of 9 mmol/L and a wide anion gap. The serum D-lactic acid was 11.21 mmol/L. There was no evidence of renal or hepatic failure. Therefore, D-lactic acidosis from enteral carbohydrate overload was diagnosed. The treatment was correction of metabolic acidosis by sodium bicarbonate infusion and carbohydrate restriction. The results of the therapy were satisfactory. Early detection and appropriate treatment is necessary to avoid morbidity and mortality following this complication of short bowel syndrome.     

Randomised controlled trial of colostrum to improve intestinal function in patients with short bowel syndrome

Background/Objectives:Colostrum is rich in immunoregulatory, antimicrobial and trophic components supporting intestinal development and function in newborns. We assessed whether bovine colostrum could enhance intestinal adaptation and function in adult short bowel syndrome (SBS) patients.Subjects/Methods:Twelve SBS patients in this randomised cross-over study received 4 weeks oral supplement of bovine colostrum or an iso-energetic and iso-proteinaceous control (2.4?MJ/d, 500?ml/day) separated by a 4-week washout period. Patients were admitted four times for 72-h periods of fluid, electrolyte and nutrient balance studies. Meals, faeces and urine were weighed, and energy, macronutrient and electrolyte contents were analysed to calculate net nutrient uptake. Body composition was measured by dual-energy X-ray absorptiometry scans, and functional tests of handgrip strength and lung functions were performed. Eight patients completed the study and were included in the analysis.Results:Both supplements (colostrum and control) not only increased protein (0.96±0.42?MJ/d, P=0.004 1.03±0.44?MJ/d, P=0.003) and energy (1.46±1.02?MJ/d, P=0.005, 1.76±1.46?MJ/d, P=0.01) absorption but also absolute faecal wet weight excretions (231±248?g/d, P=0.002, 319±299?g/d, P=0.03), compared with baseline measurements. Both supplements improved handgrip strength (P=0.03) while only the control supplement increased lean body mass (1.12±1.33?kg, P<0.049). Colostrum was not found to be superior to the control.Conclusion:Intake of high-protein milk supplements increased net nutrient absorption for adult SBS patients, but at the expense of increased diarrhoea. Despite high contents of bioactive factors, colostrum did not significantly improve intestinal absorption, body composition or functional tests compared with the control.