Laparoscopic gastric banding and body composition in morbid obesity

Guida, Bruna; Belfiore, Anna; Angrisani, Luigi; Micanti, Fausta; Mauriello, Concetta; Trio, Rossella; Pecoraro, Pierluigi; Falconi, C

doi:10.1016/j.numecd.2004.10.001

Cited by 30 publications

(43 citation statements)

References 25 publications

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“…Third, to minimize the systematic errors between DXA and BIA, in this study, we used BIVA and the RXc graph method to check for changes in tissue hydration. A recent study documented the invariability of the impedance vector length after an energy-restricted diet leading to pure FM loss [24] and a lengthening of the All values are mean±SD. Significantly differences (one-factor analysis of variance) *p<0.05 vs baseline Fig.…”

Section: Discussionmentioning

confidence: 99%

“…At discharge, patients were instructed to follow a solid diet of "permitted" foods and a list of rules specifically developed for patients with gastric restriction [23]. Patients were evaluated preoperatively, 6 and 12 months after LAGB (T 0 , T 6 , and T 12 ), an interval over which, in our experience and according to other reports [24], the rate of weight loss is greater than in subsequent periods. After surgery, patients followed a diet specifically devised for LAGB recipients: semi-liquid for 4 weeks and solid (supplying 5.7 MJ/die: 25% fat, 20% protein, and 55% carbohydrates).…”

Section: Methodsmentioning

confidence: 99%

“…According to the RXc graph method, vectors falling within the reference gender-specific 75th tolerance ellipse indicated normal hydration, short vectors (below the lower pole of the 75th tolerance ellipse) indicated overhydration, and long vectors (above the upper pole of the 75th tolerance ellipse) indicated underhydration. Vector position was also compared with the fat-fluid linear threshold discriminating between short vectors from either edematous or obese subjects falling out of the lower pole of the reference 75% tolerance ellipse, with vectors from obese subjects without edema expected to fall above the fat-fluid threshold and vectors from edematous patients that expected to fall below the fat-fluid threshold [24,27]. Vector's length was calculated as Z…”

Section: Methodsmentioning

confidence: 99%

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Validity of Bioelectrical Impedance Analysis to Estimate Body Composition Changes After Bariatric Surgery in Premenopausal Morbidly Women

et al. 2009

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In obese patients, subtle variations of the hydration of soft tissues can propagate errors in bioelectrical impedance analysis (BIA) measures of body composition. Bioelectrical impedance vector analysis (BIVA) is a useful method to evaluate tissue hydration. Laparoscopic adjustable gastric banding (LAGB) is a purely restrictive bariatric surgical procedure resulting in lower fat-free mass (FFM) loss than other malabsorptive or mixed intervention. The aim of this study was to evaluate the 6- and 12-month changes in body composition in a homogeneous group of premenopausal morbidly obese women treated by LAGB by comparing the results of conventional BIA and BIVA with dual-energy X-ray absorptiometry (DXA) method. Forty-five consecutive morbidly obese patients (mean age, 35.3 +/- 9.1 years; body mass index, 34.5-48.7 kg/m(2)) were prospectively evaluated at the Endocrinology Unit of the Department of Molecular and Clinical Endocrinology and Oncology. The LAGB device (Lap-Band System; Inamed Health, Santa Barbara, CA, USA) was inserted laparoscopically. Soft tissue hydration was evaluated by BIVA; fat mass (FM) and FFM were evaluated by BIA (BIA 101 RJL, Akern Bioresearch, Firenze, Italy) and by DXA (Hologic QDR 4500A S/N 45622; Hologic Inc., Bedford, MA, USA). Pre- and postoperative BIVA vectors indicated a normal hydration in all patients. Postoperatively, the excess of body weight loss was mainly due to a decrease in FM. The regression analysis of BIA and DXA methods at baseline and at the 6- and 12-month follow-up for FM r (2) values were 0.98, 0.94, and 0.99, respectively (p < 0.001); FM% r (2) values were 0.91, 0.89, and 0.98, respectively (p < 0.001); and FFM r (2) values were 0.87, 0.82, 0.99, respectively (p < 0.001). BIA and DXA measurements of body composition exhibit a high relative agreement in the study group of normo-hydrated obese subjects. BIA tends to overestimate FFM, but this effect is reduced along with the weight loss during the follow-up. Under the stable hydration, the BIA method may be useful as an alternative to DXA in a selected clinical setting when repeated comparisons of body composition are required.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Validity of Bioelectrical Impedance Analysis to Estimate Body Composition Changes After Bariatric Surgery in Premenopausal Morbidly Women

et al. 2009

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“…6,7 Gastric banding, a popular bariatric operation, 7,8 induces substantial weight loss due to a decrease in fat mass with relatively less reduction in the components of fat-free mass, and without significant harmful effects on body composition. 9,10 Recently, rat models of bariatric surgery with gastric banding have been reported, 11,12 but such models have not been well established until quite recently. The aims of the present study were to establish an obese rat model of gastric banding and to examine whether the model would replicate the procedure of human gastric banding in morbidly obese patients.…”

Section: Introductionmentioning

confidence: 99%

An Obese Rat Model of Bariatric Surgery with Gastric Banding

et al. 2007

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“…1,2 Bariatric surgery with gastric banding induces a substantial weight loss due to a decrease in fat mass with relatively less reduction in the components of fatfree mass, and without significant deleterious effects on body composition. 5,6 In the phase of rapid weight loss that follows gastric banding, there is a preferential mobilization of visceral fat, compared with total and subcutaneous adipose tissue. 7 Restrictive obesity surgery has been shown to result not only in sustained weight loss, but also in improvement in eating behavior.…”

Section: Introductionmentioning

confidence: 99%

Rats Submitted to Gastric Banding are Leaner and Show Distinctive Feeding Patterns

Monteiro¹,

Monteiro²,

Águas³

et al. 2006

obes surg

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Background: Bariatric surgery is expanding to meet the global epidemic of morbid obesity, because this surgery is successful in achieving sustained weight loss. After having recently established a rat model of gastric banding, our aim now was to investigate the relative fat mass content and the feeding patterns of gastric banded rats.Methods: Two groups of Wistar rats, submitted either to gastric banding or to sham surgery, were followed-up for 26 days regarding weight, daily food intake and feeding patterns both under resting conditions and when refed after fasting. Weight of the epididymal fat pad was used as a measure to evaluate changes in white adipose tissue in the rats.Results: 10 days after surgery and thereafter, rats submitted to gastric banding showed the same daily food intake that was observed in sham-operated rats. Nevertheless, gastric banded rats kept lower body weights and were leaner than controls. These differences were associated with distinctive feeding patterns, both under resting conditions and when refed after fasting, suggesting that gastric banded rats present a significant increase in feeding frequency when compared with controls.Conclusion: This data is the first experimental evidence that an increase in feeding frequency is associated with weight loss after gastric banding, even if there is no decrease in total energy intake. Thus, medical advice on the advantages of fractionating daily caloric intake into multiple meals is further supported by the herein new information obtained in an animal model of gastric banding.

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Laparoscopic gastric banding and body composition in morbid obesity

Cited by 30 publications

References 25 publications

Validity of Bioelectrical Impedance Analysis to Estimate Body Composition Changes After Bariatric Surgery in Premenopausal Morbidly Women

Validity of Bioelectrical Impedance Analysis to Estimate Body Composition Changes After Bariatric Surgery in Premenopausal Morbidly Women

An Obese Rat Model of Bariatric Surgery with Gastric Banding

Rats Submitted to Gastric Banding are Leaner and Show Distinctive Feeding Patterns

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