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The Impact of Bariatric Surgery on Nitrogen Balance at Six months Post-surgery.

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Title: The Impact of Bariatric Surgery on Nitrogen Balance at Six months Post-surgery.
Authors: Vinjamuri, Ramalakshmi Gayathri, Wu, Vieon, Eng, Alvin, Tan, Jeremy, Lim, Eugene, Lee, Phong Ching, Kovalik, Jean-Paul, Tan, Hong Chang
Source: Obesity Surgery; Jul2024, Vol. 34 Issue 7, p2363-2368, 6p
Subject Terms: GASTRIC bypass, BARIATRIC surgery, SLEEVE gastrectomy, NITROGEN excretion, ADIPOSE tissues, DIETARY proteins
Geographic Terms: SINGAPORE
Abstract: Purpose: Obesity, defined as abnormal or excessive fat accumulation that presents a risk to health, rose from 8.6 to 10.5% in Singapore's residents. Bariatric surgery, the primary treatment for severe obesity, induces fat and muscle loss. Adequate protein intake is vital for preventing muscle loss. This study examines nitrogen balance in individuals with obesity pre- and post-surgery. Materials and Methods: Sixteen participants with severe obesity (BMI ≥ 32.5 kg/m2) undergoing bariatric surgery (14 sleeve gastrectomy, 2 Roux-en-Y gastric bypass) and 20 normal-weight controls (BMI < 25 kg/m2) were recruited. Nitrogen balance, calculated from dietary protein intake and urine nitrogen excretion, was assessed. Participants with obesity were re-evaluated 6 months post-surgery. Data were analyzed using parametric methods. Results: At baseline, controls had a BMI of 20.8 ± 2.1 kg/m2; those with obesity had 40.9 ± 7.3. Daily calorie and protein intake for participants with obesity were not statistically significantly different from controls (calorie intake at 1467 ± 430 vs. 1462 ± 391 kcal, p = 0.9701, protein intake 74.2 ± 28.7 vs. 64.6 ± 18.3 g, p = 0.2289). Post-surgery, BMI, fat-free mass, fat mass, total energy intake, carbohydrate, and protein intake decreased significantly (p < 0.01). Protein oxidation and urine nitrogen excretion did not change after bariatric surgery. However, nitrogen balance significantly reduced from 2.62 ± 5.07 to − 1.69 ± 5.07 g/day (p = 0.025). Conclusion: Dietary protein intake is inadequate in individuals with obesity at 6 months post-bariatric surgery and contributes to a state of negative nitrogen balance. [ABSTRACT FROM AUTHOR]
Copyright of Obesity Surgery is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: The Impact of Bariatric Surgery on Nitrogen Balance at Six months Post-surgery.
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  Data: Obesity Surgery; Jul2024, Vol. 34 Issue 7, p2363-2368, 6p
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  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22GASTRIC+bypass%22&quot;&gt;GASTRIC bypass&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22BARIATRIC+surgery%22&quot;&gt;BARIATRIC surgery&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22SLEEVE+gastrectomy%22&quot;&gt;SLEEVE gastrectomy&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22NITROGEN+excretion%22&quot;&gt;NITROGEN excretion&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22ADIPOSE+tissues%22&quot;&gt;ADIPOSE tissues&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22DIETARY+proteins%22&quot;&gt;DIETARY proteins&lt;/searchLink&gt;
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  Data: Purpose: Obesity, defined as abnormal or excessive fat accumulation that presents a risk to health, rose from 8.6 to 10.5% in Singapore&#39;s residents. Bariatric surgery, the primary treatment for severe obesity, induces fat and muscle loss. Adequate protein intake is vital for preventing muscle loss. This study examines nitrogen balance in individuals with obesity pre- and post-surgery. Materials and Methods: Sixteen participants with severe obesity (BMI ≥ 32.5 kg/m&lt;superscript&gt;2&lt;/superscript&gt;) undergoing bariatric surgery (14 sleeve gastrectomy, 2 Roux-en-Y gastric bypass) and 20 normal-weight controls (BMI &lt; 25 kg/m&lt;superscript&gt;2&lt;/superscript&gt;) were recruited. Nitrogen balance, calculated from dietary protein intake and urine nitrogen excretion, was assessed. Participants with obesity were re-evaluated 6 months post-surgery. Data were analyzed using parametric methods. Results: At baseline, controls had a BMI of 20.8 &#177; 2.1 kg/m&lt;superscript&gt;2&lt;/superscript&gt;; those with obesity had 40.9 &#177; 7.3. Daily calorie and protein intake for participants with obesity were not statistically significantly different from controls (calorie intake at 1467 &#177; 430 vs. 1462 &#177; 391 kcal, p = 0.9701, protein intake 74.2 &#177; 28.7 vs. 64.6 &#177; 18.3 g, p = 0.2289). Post-surgery, BMI, fat-free mass, fat mass, total energy intake, carbohydrate, and protein intake decreased significantly (p &lt; 0.01). Protein oxidation and urine nitrogen excretion did not change after bariatric surgery. However, nitrogen balance significantly reduced from 2.62 &#177; 5.07 to − 1.69 &#177; 5.07 g/day (p = 0.025). Conclusion: Dietary protein intake is inadequate in individuals with obesity at 6 months post-bariatric surgery and contributes to a state of negative nitrogen balance. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
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  Data: &lt;i&gt;Copyright of Obesity Surgery is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder&#39;s express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1007/s11695-024-07269-3
    Languages:
      – Code: eng
        Text: English
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        PageCount: 6
        StartPage: 2363
    Subjects:
      – SubjectFull: SINGAPORE
        Type: general
      – SubjectFull: GASTRIC bypass
        Type: general
      – SubjectFull: BARIATRIC surgery
        Type: general
      – SubjectFull: SLEEVE gastrectomy
        Type: general
      – SubjectFull: NITROGEN excretion
        Type: general
      – SubjectFull: ADIPOSE tissues
        Type: general
      – SubjectFull: DIETARY proteins
        Type: general
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      – TitleFull: The Impact of Bariatric Surgery on Nitrogen Balance at Six months Post-surgery.
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            NameFull: Vinjamuri, Ramalakshmi Gayathri
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            NameFull: Wu, Vieon
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            NameFull: Eng, Alvin
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            NameFull: Tan, Jeremy
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            NameFull: Lim, Eugene
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            NameFull: Lee, Phong Ching
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            NameFull: Tan, Hong Chang
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            – D: 01
              M: 07
              Text: Jul2024
              Type: published
              Y: 2024
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              Value: 34
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              Value: 7
          Titles:
            – TitleFull: Obesity Surgery
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