scholarly journals Thyroid-stimulating hormone levels in euthyroid patients 8 years following bariatric surgery

2022 ◽  
Author(s):  
Anne Lautenbach ◽  
Marie Wernecke ◽  
Oliver Mann ◽  
Philipp Busch ◽  
Tobias B. Huber ◽  
...  
Keyword(s):  
Bariatric Surgery ◽  
Linear Regression ◽  
Thyroid Hormones ◽  
Thyroid Stimulating Hormone ◽  
Long Time ◽  
Log Linear ◽  
Tsh Levels ◽  
Type Of Surgery

Abstract Background Bariatric surgery (BS) was shown to promote a decline in thyroid-stimulating hormone (TSH) in euthyroid patients with severe obesity in the short-term. Aim of the present study was to assess the effect of weight loss on thyroid function in euthyroid patients in the long-term following different bariatric procedures. Methods In a retrospective cohort study including 135 patients at baseline, thyroid function was assessed at six time points up to 8 years after surgery. Patients were stratified by TSH levels at baseline and divided into two groups to compare the change in TSH at long-time. We used log-linear regression to assess the relation between thyroid hormones and TSH and linear regression analyses to identify variables that were thought to determine TSH and fT3/fT4-ratio as well as their change long-term. Results Over a mean follow-up of 8 years, TSH and fT3/fT4-ratio declined (both p < 0.001). Patients with high-normal TSH showed a greater decline in TSH than those with normal TSH compared to baseline. Thyroid hormones and TSH displayed a negative log-linear correlation at long-term follow-up. Change in TSH at long-time showed a negative correlation with TSH at baseline (B = −0.55; p < 0.001). With regard to type of surgery, there were no significant differences in TSH. Conclusion BS promotes a decline of TSH in euthyroid patients up to 8 years after intervention despite weight regain. The greatest change in TSH was seen among patients with high-normal baseline-TSH. Results of log-linear regression suggest recovery of the pituitary-thyroid axis. Type of surgery did not affect the change in TSH levels over time.

Long-Term Effects of Bariatric Surgery on Type II Diabetes, Hypertension and Hyperlipidemia: A Meta-Analysis and Meta-Regression Study with 5-Year Follow-Up

2014 ◽  
Vol 25 (3) ◽  
pp. 397-405 ◽  
Author(s):  
Cristian Ricci ◽  
Maddalena Gaeta ◽  
Emanuele Rausa ◽  
Emanuele Asti ◽  
Francesco Bandera ◽  
...  
Keyword(s):  
Bariatric Surgery ◽  
Type Ii Diabetes ◽  
Meta Analysis ◽  
Type Ii ◽  
Long Term Effects ◽  
Meta Regression

Role of the FKBP5 polymorphism rs1360780, age, sex, and type of surgery in weight loss after bariatric surgery: a follow-up study

2020 ◽  
Vol 16 (4) ◽  
pp. 581-589 ◽  
Author(s):  
Elionora Peña ◽  
Assumpta Caixàs ◽  
Concepción Arenas ◽  
Mercedes Rigla ◽  
Sara Crivillés ◽  
...  
Keyword(s):  
Bariatric Surgery ◽  
Weight Loss ◽  
Follow Up Study ◽  
Type Of Surgery

scholarly journals Association of Bariatric Surgery With Cancer Incidence in Patients With Obesity and Diabetes: Long-term Results From the Swedish Obese Subjects Study

2021 ◽  
Author(s):  
Kajsa Sjöholm ◽  
Lena MS Carlsson ◽  
Per-Arne Svensson ◽  
Johanna C. Andersson-Assarsson ◽  
Felipe Kristensson ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Bariatric Surgery ◽  
Cancer Risk ◽  
Cancer Incidence ◽  
Diabetes Remission ◽  
Obesity And Diabetes ◽  
Obese Subjects

<b>OBJECTIVE</b> <p>Obesity and type 2 diabetes are associated with serious, adverse health effects, including cancer. Although bariatric surgery has been shown to reduce cancer risk in patients with obesity, the effect of bariatric surgery on cancer risk in patients with obesity and diabetes is less studied. We therefore examined the long-term incidence of cancer after bariatric surgery and usual care in patients with obesity and diabetes in the matched prospective Swedish Obese Subjects (SOS) study. </p> <p><b>RESEARCH DESIGN AND METHODS</b></p> <p>The SOS study examines long-term outcomes following bariatric surgery or usual care. The current analysis includes 701 patients with obesity and type 2 diabetes at baseline, 393 of which underwent bariatric surgery, and 308 who received conventional obesity treatment. Information on cancer events was obtained from the Swedish National Cancer Register. Median follow-up time was 21.3 years (interquartile range 17.6-24.8 years, maximum 30.7 years). </p> <p><b>RESULTS</b></p> <p>During follow-up, the incidence rate for first-time cancer was 9.1 per 1000-person-years (95% CI, 7.2-11.5) in patients with obesity and diabetes treated with bariatric surgery and 14.1 per 1000-person-years (95% CI, 11.2-17.7) in patients treated with usual obesity care (HRadj=0.63; 95% CI 0.44-0.89, p=0.008). Moreover, surgery was associated with reduced cancer incidence in women (HRadj=0.58; 0.38-0.90, p=0.016), although the sex-treatment interaction was non-significant (p=0.630). In addition, diabetes remission at the 10-year follow-up was associated with reduced cancer incidence (HRadj=0.40; 95% CI 0.22-0.74, p=0.003).</p> <p><b>CONCLUSIONS</b></p> <p>These results suggest that bariatric surgery prevents cancer in patients with obesity and diabetes, and that durable diabetes remission is associated with reduced cancer risk. </p>

scholarly journals Thyroid Function Changes and Pubertal Progress in Females: A Longitudinal Study in Iodine-Sufficient Areas of East China

2021 ◽  
Vol 12 ◽  
Author(s):  
Yingying Wang ◽  
Dandan He ◽  
Chaowei Fu ◽  
Xiaolian Dong ◽  
Feng Jiang ◽  
...  
Keyword(s):  
Linear Regression ◽  
Multiple Linear Regression ◽  
Thyroid Function ◽  
Pubertal Development ◽  
Thyroid Stimulating Hormone ◽  
East China ◽  
Regression Analyses ◽  
Free Triiodothyronine ◽  
Serum Tsh

BackgroundThe onset of puberty is influenced by thyroid function, and thyroid hormones (THs) fluctuate substantially during the period of pubertal development. However, it needs to be further clarified how THs change at specific puberty stages and how it influences pubertal development in girls. So far, longitudinal data from China are scarce.MethodsA cohort study was conducted among girls during puberty in iodine-sufficient regions of East China between 2017 to 2019. Serum thyroid stimulating hormone (TSH), free triiodothyronine (FT3), and free thyroxine (FT4) were determined for each participant. Thyroid homeostasis structure parameters (THSPs), including the ratio of FT4 to FT3 (FT4/FT3), Jostel’s TSH index (TSHI), and thyroid feedback quantile-based index (TFQI), were calculated. Puberty category scores (PCS), calculated based on the Puberty Development Scale (PDS), was used to assess the stage of puberty. Girls were grouped into three categories according to PCS changes (△PCS) and six categories according puberty stage (BPFP: pre-pubertal at both baseline and follow-up; BPFL: pre-pubertal at baseline and late-pubertal at follow-up, respectively; BPFT: pre-pubertal at baseline and post-pubertal at follow-up, respectively; BLFL: late-pubertal at both baseline and follow-up; BLFT: late-pubertal at baseline and post-pubertal at follow-up, respectively; BTFT: post-pubertal at both baseline and follow-up). Multiple linear regression analyses were used to evaluate the associations of THs changes with pubertal progress.ResultsThe levels of serum TSH and FT3 decreased while serum FT4 increased during the study period (P&lt;0.001). In multiple linear regression analyses, after adjustment for covariables, FT3 decreased by an additional 0.24 pmol/L (95% CI: -0.47 to -0.01) in the higher △PCS group than the lower △PCS group. Compared with the BLFL group, the BPFT group showed an additional decline in FT3 (β= -0.39 pmol/L, 95%CI: -0.73 to -0.04), the BTFT group showed a lower decline in TSH (β=0.50 mU/L, 95% CI: 0.21 to 0.80) and a lower decline in TSHI (β=0.24, 95%CI: 0.06 to 0.41), respectively. There was no association of △FT4 or △TFQI with △PCS or the puberty pattern.ConclusionsSerum TSH and FT3 decreased while serum FT4 increased among girls during puberty. Both the initial stage and the velocity of pubertal development were related to thyroid hormone fluctuations.

scholarly journals Obese patients with higher TSH levels had an obvious metabolic improvement after bariatric surgery

2021 ◽  
Vol 10 (10) ◽  
pp. 1326-1336
Author(s):  
Nannan Bian ◽  
Xiaomeng Sun ◽  
Biao Zhou ◽  
Lin Zhang ◽  
Qiu Wang ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Bariatric Surgery ◽  
Thyroid Function ◽  
Fasting Blood Glucose ◽  
Thyroid Stimulating Hormone ◽  
Morbidly Obese ◽  
Obese Patients ◽  
Free Triiodothyronine ◽  
The Relationship ◽  
Tsh Levels

Objective Bariatric surgery has become the most effective treatment for morbid obesity. Increasing evidence showed that bariatric surgery can alleviate insulin resistance and influence thyroid function. This study aimed to investigate the relationship between changes in thyroid function and adipose tissue insulin resistance (adipo-IR) after bariatric surgery. Methods A total of 287 non-diabetic participants with regular thyroid function were recruited and divided into the lean, overweight and obese groups. Among them, 50 morbidly obese patients submitted to bariatric surgery. Results The obese group had a higher level of adipo-IR, thyroid-stimulating hormone (TSH), free triiodothyronine (FT3), FT3/free thyroxine (FT4) and metabolism disorders than the lean and overweight groups. BMI was correlated with TSH, FT3, FT3/FT4 and adipo-IR (r = 0.309, 0.315, 0.322 and 0.651, respectively, all P < 0.001). Adipo-IR was significantly correlated with TSH (r = 0.402, P < 0.001), FT3 (r = 0.309, P < 0.001), and FT3/FT4 (r = 0.228, P < 0.05). Bariatric surgery resulted in a sharp decline in BMI, adipo-IR, TSH, FT3 and FT3/FT4 levels, meanwhile, metabolic disorders improved. The decrease in BMI after bariatric surgery was significantly correlated with reductions in adipo-IR (r = 0.577, P < 0.001) and TSH (r = 0.401, P = 0.005). Interestingly, the fasting blood glucose, fasting insulin, adipo-IR and TSH in the higher TSH group decreased more remarkably than in the lower TSH group. Conclusion Obese individuals with higher TSH levels had an obvious metabolic improvement after bariatric surgery.

scholarly journals Bariatric Surgery Is Protective Against Renal Function Decline in Severely Obese Patients in the Long-Term

2020 ◽  
Author(s):  
Anne Lautenbach ◽  
Jan-Wilhelm Wienecke ◽  
Fabian Stoll ◽  
Nina Riedel ◽  
Oliver Mann ◽  
...  
Keyword(s):  
Bariatric Surgery ◽  
Renal Function ◽  
Negative Correlation ◽  
Filtration Rate ◽  
Obese Patients ◽  
Renal Function Decline ◽  
Severely Obese ◽  
Age And Sex

Abstract Purpose This study aims to assess the long-term renal effects of bariatric surgery (BS) in severely obese patients over a follow-up period of up to 11 years. Materials and Methods In a retrospective cohort study including 102 patients, patients were stratified by eGFR at baseline and divided into three groups: (1) reduced, (2) normal, and (3) increased filtration rate. Adjustments for age- and sex-related decline in eGFR were performed. We used uni- and multivariate regression analysis to identify variables that were thought to determine change in eGFR. Results Over a median follow-up of 8.5 years (interquartile range 2.7), eGFR declined from 96.1 ± 20.7 to 84.9 ± 21.0 ml/min (p < 0.001). Among patients with (1), eGFR remained stable (69.1 ± 19.3 ml/min). Among patients with (2), eGFR declined from 99.7 ± 13.3 ml/min to 88.7 ± 19.4 ml/min (p < 0.001). Among patients with (3), eGFR decreased to normal levels (94.2 ± 17.7 ml/min, p < 0.001). Age- and sex-adjusted eGFR increased (6.4 ± 14.4 ml/min; p < 0.05) among patients with reduced filtration rate. Among patients with normal filtration rate, adjusted eGFR remained stable during follow-up (−1.3 ± 15.2 ml/min; n.s.). Among patients with increased filtration rate, adjusted eGFR decreased and remained within the normal range (−13.2 ± 12.2 ml/min; p < 0.001). Change in eGFR showed a negative correlation with eGFR at baseline (B = −0.31; p < 0.001), change in LDL-cholesterol (B = -0.09; p < 0.05), and a negative correlation with treatment requiring hypertension (B = -9.36; p = 0.001). Conclusion BS is protective against renal function decline in severely obese patients in the long term.

New Horizons Observations of the Atmosphere of Pluto

2019 ◽  
Vol 47 (1) ◽  
pp. 119-140 ◽  
Author(s):  
G. Randall Gladstone ◽  
Leslie A. Young
Keyword(s):  
Molecular Nitrogen ◽  
Rapid Rate ◽  
Radiation Processing ◽  
New Horizons ◽  
Heating And Cooling ◽  
Current State ◽  
Long Time ◽  
Average State

New Horizons data provide a snapshot of the current state of Pluto's atmosphere. Winds are slow and mostly controlled by sublimation of surface ices. Molecular nitrogen is the primary constituent below 1,800 km, while methane and carbon monoxide are important minor species. Photolysis of these gases leads to a thin haze that encompasses Pluto from the surface up to >500-km altitude and is important in heating and cooling the atmosphere. A cold (∼70 K) upper atmosphere curtails the escape of Pluto's molecular nitrogen to space, although there is substantial escape of methane (∼5 × 1025 molecules s−1), coincidentally about equal to its loss by photochemistry. It is unknown if the current atmosphere is representative of its long-term average state. From the inferred rapid rate of haze settling, it seems that Pluto's atmosphere must occasionally undergo collapse to allow time for radiation processing of the colorless haze material into the dark deposits found on the surface. ▪ This article outlines what has been gleaned about Pluto's atmosphere in the years since the New Horizons flyby. ▪ Pluto's atmosphere is most similar to Titan's—with the photochemistry of supervolatile nitrogen and hydrocarbons resulting in a kind of factory for cold haze production. ▪ Much has been learned about Pluto's atmosphere, but many new questions have arisen, and these will likely remain unanswered until there is a follow-up mission—no doubt a long time from now.

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