Plasma insulin concentration is more tightly linked to plasma leptin concentration than is the body mass index

Metabolism ◽  
2000 ◽  
Vol 49 (4) ◽  
pp. 544-547 ◽  
Author(s):  
Fahim Abbasi ◽  
Marcello Carantoni ◽  
Tracy McLaughlin ◽  
Gerald M. Reaven
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Plasma Insulin ◽  
The Body ◽  
Insulin Concentration ◽  
Plasma Insulin Concentration ◽  
Plasma Leptin

scholarly journals Adaptive and Personalized Plasma Insulin Concentration Estimation for Artificial Pancreas Systems

2018 ◽  
Vol 12 (3) ◽  
pp. 639-649 ◽  
Author(s):  
Iman Hajizadeh ◽  
Mudassir Rashid ◽  
Sediqeh Samadi ◽  
Jianyuan Feng ◽  
Mert Sevil ◽  
...  
Keyword(s):  
Real Time ◽  
Plasma Insulin ◽  
Artificial Pancreas ◽  
Time Estimation ◽  
The Body ◽  
Insulin Concentration ◽  
Model Parameters ◽  
Plasma Insulin Concentration ◽  
Real Time Estimation ◽  
Clinical Experiments

Background: The artificial pancreas (AP) system, a technology that automatically administers exogenous insulin in people with type 1 diabetes mellitus (T1DM) to regulate their blood glucose concentrations, necessitates the estimation of the amount of active insulin already present in the body to avoid overdosing. Method: An adaptive and personalized plasma insulin concentration (PIC) estimator is designed in this work to accurately quantify the insulin present in the bloodstream. The proposed PIC estimation approach incorporates Hovorka’s glucose-insulin model with the unscented Kalman filtering algorithm. Methods for the personalized initialization of the time-varying model parameters to individual patients for improved estimator convergence are developed. Data from 20 three-days-long closed-loop clinical experiments conducted involving subjects with T1DM are used to evaluate the proposed PIC estimation approach. Results: The proposed methods are applied to the clinical data containing significant disturbances, such as unannounced meals and exercise, and the results demonstrate the accurate real-time estimation of the PIC with the root mean square error of 7.15 and 9.25 mU/L for the optimization-based fitted parameters and partial least squares regression-based testing parameters, respectively. Conclusions: The accurate real-time estimation of PIC will benefit the AP systems by preventing overdelivery of insulin when significant insulin is present in the bloodstream.

Sodium-lithium countertransport and platelet cytosolic free calcium concentration in relation to peripheral insulin sensitivity in postmenopausal women

1992 ◽  
Vol 83 (3) ◽  
pp. 319-324 ◽  
Author(s):  
Ingrid Mattiasson ◽  
Kerstin Berntorp ◽  
Folke Lindgärde
Keyword(s):  
Blood Pressure ◽  
Body Mass Index ◽  
Glucose Tolerance ◽  
Plasma Insulin ◽  
Normal Glucose Tolerance ◽  
Insulin Concentration ◽  
Glucose Disposal ◽  
Plasma Insulin Concentration ◽  
Normal Glucose ◽  
Basal Plasma

1. Peripheral glucose disposal (assessed by the euglycaemic-hyperinsulinaemic clamp technique), Na+-Li+ countertransport in erythrocytes and the cytosolic free Ca2+ concentration in platelets were determined in 41 women with impaired glucose tolerance and in 38 women with normal glucose tolerance. The groups were matched for body mass index (range 18–44 kg/m2) and diastolic blood pressure (range 58–109 mmHg). 2. Na+-Li+ countertransport was correlated significantly with body mass index, basal plasma insulin concentration and basal plasma glucose concentration, and was inversely correlated with peripheral glucose disposal rate. Stepwise regression analysis showed that Na+-Li+ countertransport was positively correlated with basal plasma insulin concentration (r2 = 8.7%). 3. Systolic blood pressure was correlated with fasting plasma insulin concentration (model r2 = 25%) and with Na+-Li+ countertransport (model r2 = 34%) in the group with impaired glucose tolerance. In the group with normal glucose tolerance there were no correlations between blood pressure and Na+-Li+ countertransport. 4. No correlation was found between platelet cytosolic free Ca2+ concentration and any of the variables measured. 5. It is concluded that Na+-Li+ countertransport is correlated with the degree of peripheral insulin sensitivity and with the plasma insulin concentration. Platelet cytosolic free Ca2+ concentration was not correlated with any of these variables, and there was no relationship between Na+-Li+ countertransport and the platelet cytosolic free Ca2+ concentration.

scholarly journals Robust Leptin Secretory Responses to Dexamethasone in Obese Subjects*

1997 ◽  
Vol 82 (10) ◽  
pp. 3230-3233 ◽  
Author(s):  
Samuel Dagogo-Jack ◽  
Gregg Selke ◽  
Angela K. Melson ◽  
John W. Newcomer
Keyword(s):  
Body Mass Index ◽  
Sexual Dimorphism ◽  
Total Dose ◽  
Body Mass ◽  
Plasma Insulin ◽  
Dexamethasone Treatment ◽  
Obese Subjects ◽  
Baseline Values ◽  
Plasma Leptin

Abstract Although leptin reverses obesity in rodents, its function and regulation in humans are unknown. Glucocorticoids have been reported to stimulate leptin production in both rodents and humans, but data assessing the effect of obesity on dynamic leptin secretory responses are unavailable. We, therefore, studied 52 lean and obese subjects [20 men and 32 women; aged 19–84 yr; body mass index (BMI) range, 16–47 kg/m2] randomized to treatment with dexamethasone (total dose, 10 mg/4 days) or placebo. Compared with placebo, dexamethasone increased (P = 0.0001) plasma leptin levels by 64–111% above baseline values within 2–4 days. The increases occurred in all ages, showed no sexual dimorphism, and were particularly robust in obese subjects. After dexamethasone treatment, significant interactions were observed between the change in plasma leptin and BMI (P = 0.0001), baseline plasma leptin (P = 0.0006) and plasma dexamethasone levels (P = 0.04), but not age (P = 0.28); an apparent interaction with plasma insulin no longer was significant after controlling for BMI. These results confirm dexamethasone-induced hyperleptinemia in humans and further demonstrate that the response is not defective in obesity.

191: Does the Body Mass Index Affect the Outcome Following Reconstruction of Orthotopic Neobladder?

2007 ◽  
Vol 177 (4S) ◽  
pp. 64-64
Author(s):  
Murugesan Manoharan ◽  
Martha A. Reyes ◽  
Alan M. Nieder ◽  
Bruce R. Kava ◽  
MarkS Soloway
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
The Body ◽  
Orthotopic Neobladder

EFFECT OF BODY MASS INDEX ON PEAK EXPIRATORY FLOW RATE

2019 ◽  
Vol 3 (9) ◽  
Author(s):  
K. Subramanyam ◽  
Dr. P. Subhash Babu
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Peak Expiratory Flow ◽  
Flow Rate ◽  
Peak Expiratory Flow Rate ◽  
Normal Weight ◽  
The Body ◽  
Health Care Centre ◽  
Expiratory Flow ◽  
Group B

Obesity has become one of the major health issues in India. WHO defines obesity as “A condition with excessive fat accumulation in the body to the extent that the health and wellbeing are adversely affected”. Obesity results from a complex interaction of genetic, behavioral, environmental and socioeconomic factors causing an imbalance in energy production and expenditure. Peak expiratory flow rate is the maximum rate of airflow that can be generated during forced expiratory manoeuvre starting from total lung capacity. The simplicity of the method is its main advantage. It is measured by using a standard Wright Peak Flow Meter or mini Wright Meter. The aim of the study is to see the effect of body mass index on Peak Expiratory Flow Rate values in young adults. The place of a study was done tertiary health care centre, in India for the period of 6 months. Study was performed on 80 subjects age group 20 -30 years, categorised as normal weight BMI =18.5 -24.99 kg/m2 and overweight BMI =25-29.99 kg/m2. There were 40 normal weight BMI (Group A) and 40 over weight BMI (Group B). BMI affects PEFR. Increase in BMI decreases PEFR. Early identification of risk individuals prior to the onset of disease is imperative in our developing country. Keywords: BMI, PEFR.

Visual body processing’s associations to Body Mass Index and internalization of societal beauty ideals

2020 ◽  
Author(s):  
Valentina Cazzato ◽  
Elizabeth Walters ◽  
Cosimo Urgesi
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Visual Processing ◽  
The Body ◽  
Configural Processing ◽  
Cultural Ideals ◽  
Beauty Ideals ◽  
Female Bodies ◽  
Processing Mechanisms ◽  
Attention To Detail

We examined whether visual processing mechanisms of the body of conspecifics are different in women and men and whether these rely on westernised socio-cultural ideals and body image concerns. Twenty-four women and 24 men performed a visual discrimination task of upright or inverted images of female or male bodies and faces (Experiment 1) and objects (Experiment 2). In Experiment 1, both groups of women and men showed comparable abilities in the discrimination of upright and inverted bodies and faces. However, the genders of the human stimuli yielded different effects on participants’ performance, so that male bodies and female faces appeared to be processed less configurally than female bodies and male faces, respectively. Interestingly, altered configural processing for male bodies was significantly predicted by participants’ Body Mass Index (BMI) and their level of internalization of muscularity. Our findings suggest that configural visual processing of bodies and faces in women and men may be linked to a selective attention to detail needed for discriminating salient physical (perhaps sexual) cues of conspecifics. Importantly, BMI and muscularity internalization of beauty ideals may also play a crucial role in this mechanism.

STEROID RECEPTOR PHENOTYPE, EXPRESSION OF HER-2/NEU, PD-1, PD-L1 AND LYMPHOCYTIC-MACROPHAGAL INFILTRATION OF ENDOMETRIAL CARCINOMAS: COMPARISON OF MODERN MOLECULAR BIOLOGICAL TYPES OF THE DISEASE (THE ROLE OF BODY MASS INDEX)

2020 ◽  
Vol 66 (1) ◽  
pp. 71-78
Author(s):  
Lev Bershteyn ◽  
Aleksandr Ivantsov ◽  
Aglaya Ievleva ◽  
A. Venina ◽  
I. Berlev
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Tumor Tissue ◽  
Immunohistochemical Analysis ◽  
The Body ◽  
Molecular Profile ◽  
Total N ◽  
Number Of Patients ◽  
Her 2

The aim of this study was to evaluate steroid receptors’ status of tumor tissue in different molecular biological types of endometrial cancer (EC), subdivided according to the current classification, and their colonization by lymphocytic and macrophage cells, taking into account body mass index of the patients. Materials and methods: Material from treatment-naive patients with EC (total n = 229) was included; the number of sick persons varied depending on the method used. The average age of patients was close to 60 years, and about 90% of them were postmenopausal. It was possible to divide the results of the work into two main subgroups: a) depending on the molecular biological type of the tumor (determined on the basis of genetic and immunohistochemical analysis), and b) depending on the value of the body mass index (BMI). The latter approach was used in patients with EC type demonstrating a defective mismatch repair of the incorrectly paired nucleotides (MMR-D) and with a type without characteristic molecular profile signs (WCMP), but was not applied (due to the smaller number of patients) in EC types with a POLE gene mutation or with expression of the oncoprotein p53. According to the data obtained, when comparing various types of EC, the lowest values of Allred ER and PR scores were revealed for POLE-mutant and p53 types, while the “triple-negative” variant of the tumor (ER-, PR-, HER2/neu-) was most common in POLE-mutant (45.5% of cases) and WCMP (19.4%) types of EC. The p53+ type of EC is characterized by inclination to the higher expression of the macrophage marker CD68 and lymphocytic Foxp3, as well as mRNA of PD-1 and SALL4. In addition to the said above, for WCMP type of EC is peculiar, on the contrary, a decrease in the expression of lymphocytic markers CD8 (protein) and PD-L1 (mRNA). When assessing the role of BMI, its value of >30.0 (characteristic for obesity) was combined with an inclination to the increase of HER-2/neu expression in the case of MMR-D EC type and to the decrease of HER-2 /neu, FOXp3 and ER expression in WCMP type. Conclusions: The accumulated information (mainly describing here hormonal sensitivity of the tumor tissue and its lymphocytic-macrophage infiltration) additionally confirms our earlier expressed opinion that the differences between women with EC are determined by both the affiliation of the neoplasm to one or another molecular biological type (subdivided according to the contemporary classification), as well as by body mass value and (very likely) the associated hormonal and metabolic attributes.

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