scholarly journals The effect of daun sendok (Plantago major) extract on the blood glucose level of Balb/C mice induced by streptozotocin

2010 ◽  
Vol 8 (2) ◽  
pp. 66-71
Author(s):  
PUTRI SATRIANY ◽  
R. P. ANDRI PUTRANTO ◽  
IPOP SYARIFAH
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
Blood Glucose Level ◽  
Glucose Level ◽  
Simple Random Sampling ◽  
Control Group ◽  
Plantago Major ◽  
Control Group Design ◽  
Glucose Levels ◽  
Blood Glucose Levels

Satriany P, Putranto RPA, Syarifah I. 2010. The effect of daun sendok (Plantago major) extract on the blood glucose level of Balb/C mice induced by streptozotocin. Biofarmasi 8: 66-71. This research aimed to determine the effect of daun sendok (Plantago major L.) extract on the blood glucose level of Balb/C mice induced by streptozotocin. This study was a laboratory experimental pre and post-test control group design. The subjects used were 16 male mice. Then, mice were induced with streptozotocin by a dose of 65 mg/kg body weight intraperitoneally freshly dissolved in 0.02 M citrate saline buffer. Mice used were mice with blood glucose levels â‰¥200 mg/dL. Furthermore, mice were divided into 2 groups by a simple random sampling. Group 1 was given metformin in a dose of 1.3 mg/mice/day and group 2 was given daun sendok extract in a dose of 1000 mg/kg body weight/day. At the 2nd week, it was measured for the glucose levels from the blood of mice tail by a Blood Glucose Stick Meter (Gluco DrTM). The data obtained were statistically analyzed by independent samples t-test by using SPSS Programme for Microsoft Windows release 17.0. The significance was set at p<0.05. The difference of average blood glucose levels pre vs post experiment, metformin group was -145.87 mg/dL and daun sendok group was -85.00 mg/dL (p=0.024). The experiment results showed that daun sendok extract in a dose of 1000 mg/kg body weight/day could reduce the blood glucose levels in Balb/C mice induced by streptozotocin.

scholarly journals Pemberian ekstrak air buah sawo (Manilkara zapota L.) menurunkan kadar glukosa darah tikus (rattus norvegicus) diabetes mellitus

2016 ◽  
Vol 3 (3) ◽  
pp. 180
Author(s):  
Effatul Afifah
Keyword(s):  
Diabetes Mellitus ◽  
Body Weight ◽  
Blood Glucose ◽  
Blood Glucose Level ◽  
Glucose Level ◽  
Control Group ◽  
Control Group Design ◽  
Group Design ◽  
Glucose Levels ◽  
Blood Glucose Levels

<p><strong>ABSTRACT</strong><br /><br /><em><strong>Background</strong>: Diabetes mellitus (DM) is a chronic metabolic problem disorder characterized by hyperglicemia which is caused by insulin deficiency produced by β-pancreas cells, thus causing abnormalities of carbohydrate, protein, and fat metabolism, and tend to cause complications. </em></p><p><em><strong>Objectives</strong>: To know the effect of sapodilla extract water on blood glucose level of diabetic induce mice. </em></p><p><em><strong>Methods</strong>: This was an experimental study with pre-post control group design. Sapodilla extract water (EABS) was fed to group of mice with alloxan diabetes induction. Twenty four DM induced mice were separated into 4 groups, e.g. control without and with medication of glibenclamide, EABS 1 (treated with 3.6 mL/200 g body weight), and EABS 2 (treated with 7.2 mL/200 g body weight). Mice were then measured for their blood glucose level at the day of 3, 14, and 30. </em></p><p><em><strong>Results</strong>: EABS 1 and EABS 2 decreased blood glucose levels at week of 1st, 2nd, and 3rd after induction. The greatest reduction was shown by EABS 2 at the 3rd week. EABS decreased blood glucose level of mice induced DM and signifi cantly shown at glibenclamide group, followed by EABS 2 and EABS 1.</em></p><p><em><strong>Conclusions</strong>: EABS reduced blood glucose levels of diabetic mice and signifi cantly shown for glibenclamide group, followed by EABS 2 and EABS 1.</em></p><p><strong>KEYWORDS</strong>:<em> diabetes mellitus, sapodilla extract water, blood glucose</em></p><p><br /><strong>ABSTRAK</strong></p><p><em><strong>Latar belakang</strong>: Diabetes mellitus (DM) merupakan penyakit gangguan metabolik kronis yang ditandai dengan hiperglikemia yang disebabkan oleh kekurangan insulin yang dihasilkan oleh sel β-pankreas sehingga menimbulkan kelainan metabolisme karbohidrat, protein dan lemak, dan cenderung menimbulkan komplikasi.</em></p><p><em><strong>Tujuan</strong>: Mengetahui efek pemberian ekstrak buah air sawo terhadap kadar glukosa darah tikus yang diinduksi DM.</em></p><p><em><strong>Metode</strong>: Penelitian ini merupakan penelitian eksperimental murni dengan rancangan pre-post test control group design dengan memberikan intervensi ekstrak buah air sawo (EABS) pada kelompok tikus yang diberikan induksi DM menggunakan aloksan. Sebanyak 24 tikus yang diinduksi DM dikelompokkan ke dalam 4 perlakuan, antara lain kontrol tanpa dan dengan pengobatan glienclamide, EABS 1 (diberi 3,6 mL/200 g berat badan), dan EABS 2 (7,2 mL/200 g berat badan). Tikus diukur kadar gula darahnya pada hari ke-3, 14, dan 30. </em></p><p><em><strong>Hasil</strong>: EABS mampu menurunkan kadar glukosa darah pada tikus, baik pada kelompok EABS 1 maupun EABS 2 pada minggu ke-1, ke-2, dan ke-3 setelah induksi. Hasil penurunan kadar glukosa yang paling besar terjadi pada kelompok EABS 2 pada minggu ke-3 perlakuan. EABS dapat menurunkan kadar glukosa darah tikus yang diinduksi DM dan paling signifi kan terjadi pada kelompok glibenclamide diikuti oleh EABS 2 dan EABS 1.</em></p><p><em><strong>Kesimpulan</strong>: EABS mampu menurunkan kadar glukosa darah pada tikus yang diinduksi alloxan.</em></p><p><strong>KATA KUNCI</strong><em>: diabetes mellitus, ekstrak air buah sawo, glukosa darah</em></p>

scholarly journals Uji efek air perasan albedo semangka kuning (Citrilus lanatus (Thunb.) Matsum. & Nakai) terhadap kadar glukosa darah pada tikus wistar (Rattus norvegicus) yang diinduksi aloksan

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
Savitri Muhammad Nur ◽  
Henoch Awaloei ◽  
Jane Wuisan
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
Blood Glucose Level ◽  
Glucose Level ◽  
Wistar Rats ◽  
White Layer ◽  
Negative Control ◽  
Control Group ◽  
Glucose Levels ◽  
Blood Glucose Levels

Abstract: Indonesian has various natural resources, second as largest after Brazil. One of the traditional medicine that has been used is watermelon. The part of watermelon that is known to be used as medicine is its white layer between the peel and the fruit, albedo. This study aimed to determine the effect of yellow watermelon albedo juice on blood glucose levels in wistar rats induced by alloxan. Subjects consisted of 18 male Wistar rats divided into 6 groups as follows: a negative control group, 3 groups of hyperglycemic rats induced with alloxan 120 mg/kg body weight; and 2 groups given only yellow watermelon albedo juice. Hyperglycemic rats were given yellow watermelon albedo with dose of 9 g/kg body weight and 4,5 g/kg body weight; positive control group was given novomix; and two other groups were given only yellow watermelon albedo juice. Blood glucose levels of each rat were evaluated on day 1, day 2, and day 3 before the treatment after 6 hours, 12 hours, 18 hours, 24 hours. The results showed that administration of yellow watermelon albedo juice 9 g/kg body weight of Wistar rats reduced the blood glucose level until 126.67 mg/dl, meanwhile the dose 4.5 g/kg body weight reduced the blood glucose level until 173.67 mg/dl. Conclusion: Administration of yellow watermelon albedo juice of 9 g/kg body weight and 4.5 g/kg body weight could reduce blood glucose levels of hyperglycemic Wistar rats induced by alloxan. Keywords: yellow watermelon albedo, hyperglycemia, blood glucose level Abstrak: Indonesia merupakan negara yang memiliki keanekaragaman hayati terkaya kedua didunia setelah Brazil. Salah satu obat tradisional yang digunakan ialah buah semangka. Bagian dari semangka yang digunakan ialah lapisan yang berwarna putih yakni antara kulit dan daging buah semangka disebut albedo. Penelitian ini bertujuan untuk menguji pengaruh pemberian air perasan albedo semangka kuning terhadap kadar glukosa darah pada tikus wistar yang diinduksi aloksan. Subjek penelitian yaitu 18 ekor tikus Wistar jantan yang dibagi menjadi 6 kelompok, yaitu: kelompok kontrol negatif; 3 kelompok tikus Wistar hiperglikemik yang diinduksi aloksan dengan dosis 120 mg/kg BB; dan 2 kelompok tikus Wistar yang hanya diberikan albedo semangka kuning. Kelompok tikus yang hiperglikemik diberi albedo semangka kuning dengan dosis 9 g/kg BB dan 4,5 g/kg BB; kelompok kontrol positif diberikan novomix; dan 2 kelompok hanya diberikan albedo semangka kuning. Pemeriksaan kadar glukosa darah dari semua kelompok tikus Wistar dilakukan pada hari ke-1, hari ke-2, dan hari ke-3 pada jam ke 0, 6, 12, 18, dan 24. Hasil penelitian memperlihatkan pemberian air perasan albedo semangka kuning dosis 9 g/kg BB dapat menurunkan kadar glukosa darah sebanyak 126,67 mg/dl sedangkan dosis 4,5 g/kg BB sebanyak 173,67 mg/dl. Simpulan: Air perasan albedo semangka kuning dengan dosis 9 g/kg BB dan 4,5 g/kg BB dapat menurunkan kadar glukosa darah tikus Wistar hiperglikemik yang diinduksi aloksan.Kata kunci: albedo semangka kuning, hipeglikemi, kadar glukosa darah

scholarly journals EFFECTIVENESS OF AMLA JUICE IN REDUCING BLOOD GLUCOSE LEVEL AMONG PATIENTS WITH TYPE II DIABETES IN A SELECTED AREA OF KANYAKUMARI DISTRICT

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Mrs. Vanitha. S s ◽  
Dr. Pramjit kaur
Keyword(s):  
Blood Glucose ◽  
Standard Deviation ◽  
Blood Glucose Level ◽  
Glucose Level ◽  
Type Ii Diabetes ◽  
Control Group ◽  
Type Ii ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Experimental Group

Challenges in lifestyle, such as increasesin energy intake and decreasesin physical activity are causing overweight and obesity leading to epidemic increases in type II Diabetes Mellitus. The research approach used for this study was evaluative approach and the research design was true experimental design. 60 patients with type II diabetes, 30 in experimental group and 30 in control group were selected for this study by using purposive sampling technique. Data was collected with the help of self-structured interview schedule. Descriptive statistics (frequency, percentage, mean and standard deviation) and inferential statistics (chi-square, paired ‘t’ test) were used to analyse the data and to test the hypotheses. In the experimental group,the pre-test mean score was 2.966, mean percentage was 59% and standard deviation was 1.129 and in post-testmean score was 2.533, mean percentage was 50.66% and standard deviation was 1.074 with effectiveness of 8.34% and paired‘t’ test value of t=3.971,which was statistically significant (p<0.05) which is an evidence ofthe effectiveness of Amla juice in reducing blood glucose level. Comparison of blood glucose levels in experimental and control groups, shows that the value is statistically highly significant, as was observed from the unpaired ‘t’ test value of 13.39 with P value of <0.05, which is an evidence indicatingthe effect of Amla juice in reducing postprandial blood glucose levels. The resultsfound that the administration of Amla juice did have aneffect in reducing blood glucose level in the experimental group. By comparing the findings of pre-test and post test between the experimental group and the control group,the effect was identified (assessed). The study concluded that the Amlajuice is effective in reducing blood glucose level.

scholarly journals The Effect of Belimbing Wuluh (Averrhoa Bilimbi L.) and Red Guava (Psidium Guajava L.) Extract on Fasting Blood Glucose Levels of Diabetic Wistar Rats Model

2019 ◽  
Vol 5 (2) ◽  
pp. 57
Author(s):  
Yesi Warisman ◽  
Arinda Lironika Suryana ◽  
Zora Olivia
Keyword(s):  
Blood Glucose ◽  
Blood Glucose Level ◽  
Glucose Level ◽  
Wistar Rats ◽  
Fasting Blood Glucose ◽  
Diabetic Rats ◽  
Control Group ◽  
Standard Diet ◽  
Glucose Levels ◽  
Blood Glucose Levels

Diabetes mellitus is a metabolic disease with special characteristic which increased blood glucose level (hiperglicemic), its happens because of the abnormality of insulin secretion, insulin mechanisme or both of them. Belimbing wuluh and red guava extract can become alternative functional drink that contain rich of vitamin C to help controlling blood glucose level. The aimed of this study was to determined the effect of belimbing wuluh and red guava extract on blood glucose levels of Rattus novergicus strain Wistar diabetic model. This research was an true experimental study with a randomized post-test control group design. Twentyfour (24) male wistar strain rats weighing 200-250 grams, aged 2-3 months, were divided into 4 groups. The control group (K-) non-diabetic rats, the control group (K+) diabetic rats given standard diet, and the treatment group diabetic rats given standard diet and belimbing wuluh and red guava extract intervetion doses 10,7 ml/day (P1) and 21ml/day (P2). Measurement of pretest posttest fasting blood glucose levels was carried out using biolyzer. The data were analyzed by One Way Anova test. The results showed that there were significant differences in delta pretest and posttest fasting blood glucose levels between all groups. Blood glucose levels decreased at 55.6%. In conclusion, belimbing wuluh and red guava extract 21ml/day most effectively decreased fasting blood glucose levels in diabetic wistar rats moldel.   Keywords: belimbing wuluh, blood glucose level, diabetes mellitus, red guava

scholarly journals Pengaruh Pemberian Minuman Fungsional Terhadap Penurunan Kadar Glukosadarah Puasa Pada Penderita Diabetes Melitus

2019 ◽  
Vol 4 (2) ◽  
pp. 114
Author(s):  
Tutut Zikra Anjani ◽  
Suhaema Suhaema ◽  
Fifi Lutfiah ◽  
Ni Ketut Sri Sulendri
Keyword(s):  
Blood Glucose ◽  
Fasting Blood Glucose ◽  
Female Gender ◽  
Simple Random Sampling ◽  
Control Group ◽  
Risk Category ◽  
Control Group Design ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Post Test

Indonesia is currently the fourth country with the largest number of DM patients in the world. Functional food is beneficial for the health of DM patients, for example bananas and soybeans. Kepok bananas contain dietary fiber inulin and antioxidants (β carotene). Soybeans contain isoflavones, fiber, and proteins in the form of amino acids arginine and glycine. This study aims to look at the effect of giving functional drinks a mixture of soybean and banana milk on decreasing fasting blood glucose levels in type II DM patients. Type of Quasy-experimental research with pre test and post test with control group design. Subjects were taken using the Simple Random Sampling method and the subjects involved until the end of the study were 26 people. The intervention was carried out for 14 days and given as much as 330 ml. The equality of the subject characteristics of the two groups was analyzed using the chy squere test, and the effect of giving intervention materials on decreasing blood glucose levels was tested by independent t test. The results of the study were characteristics (84.6%) aged 50-60 years, (53.8%) female gender, (57.1%) having a family history of disease, 58.4% using glibenclamide anti-hyperglycemic drugs and BMI average in the risk category. . Result Δ It is known that there is an effect of giving functional drinks on decreasing fasting blood glucose levels where the average change is 11.5 mg / dl (p = 0.03). 

Effect of herbal extract of anting-anting (Acalypha australis) on blood glucose level of Balb/C mice with induction of Streptozotocin

2011 ◽  
Vol 9 (1) ◽  
pp. 12-16
Author(s):  
RIZKY OCKTARINI ◽  
DIDING HERI PRASETYO ◽  
IPOP SJARIFAH
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
Blood Glucose Level ◽  
Glucose Level ◽  
T Test ◽  
Herbal Extract ◽  
Control Group ◽  
Buffer Solution ◽  
Control Group Design ◽  
Post Test

Ocktarini R, Prasetyo DH, Sjarifah I. 2011. Effect of herbal extract of anting-anting (Acalypha australis) on blood glucose level of Balb/C mice with induction of Streptozotocin. Biofarmasi 9: 12-16. This study was conducted to determine the effect of herbal extract of anting-anting (Acalypha australis L.) on the decrease of blood glucose level of Balb/C mice induced with Streptozotocin. This research was an experimental laboratory with pre and post-test control group design, conducted in Laboratory of Biochemistry and Histology, Faculty of Medicine, Sebelas Maret University, Surakarta. The test animals used were 16 male mice, about 4-6 weeks of age with approximately 20-30 grams induced with Streptozotocin in 0.02 M citric buffer solution, and a dose of 65 mg/kg body weight. Furthermore, the mice were divided into two groups (Metformin in a dose of 1.3 mg/mice/day and herbal extract of anting-anting 1000 mg/kg BB/day) randomly, each group consisted of 8 mice. All mice were observed for GDS level after 14 days treatment period. The data obtained was processed by using the Independent-Samples T-test statistical test (unpaired t-test) with SPSS for Microsoft Windows Release 18.0. Mean of decreased GDS levels on Metformin group vs herbal extract of anting-anting (145.87 mg/dl vs 144.62 mg/dl, p=0.965). The treatment of herbal extract of anting-anting in a dose of 1000 mg/kg body weight/day could decrease blood glucose level of Balb/C mice induced with Streptozotocin that equal with Metformin.

scholarly journals Perceived food palatability, blood glucose level and future discounting: Lack of evidence for blood glucose level’s impact on reward discounting

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0255484
Author(s):  
Rafał Muda ◽  
Przemysław Sawicki ◽  
Michał Ginszt
Keyword(s):  
Blood Glucose ◽  
Blood Glucose Level ◽  
Glucose Level ◽  
Control Group ◽  
Palatable Food ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Future Discounting ◽  
Moderating Role ◽  
Experimental Group

Some previous studies have shown that an increase in blood glucose level makes people more future oriented, however, results are inconsistent, other studies failing to replicate this effect. Here, we tested whether psychological factors (in this instance, perception of food pleasantness after consumption of more palatable or less palatable meal) can play a moderating role. We hypothesized that consuming more palatable food (perceived as rewarding) should cause blood glucose levels to affect future discounting, but that this should not occur for the consumption of less palatable food. A high-powered, independent groups experiment (N = 149, power β = .90) showed that, subsequent to performing an initial discounting task, the two groups consuming a meal (a control group consumed no meal) displayed a significant increase in blood glucose levels 10 minutes after meal consumption and just before repeating the discounting task. However, the increased blood glucose levels did not cause changes in delay discounting in either experimental group.

THE EFFECT OF RESERPINE ON THE SENSITIVITY OF RATS TO INSULIN AND TOLBUTAMIDE

1964 ◽  
Vol 42 (1) ◽  
pp. 13-20 ◽  
Author(s):  
Rosemary D. Hawkins ◽  
Anne L. Crawford ◽  
R. E. Haist
Keyword(s):  
Body Weight ◽  
Single Dose ◽  
Blood Glucose ◽  
Blood Glucose Level ◽  
Blood Sugar ◽  
Glucose Level ◽  
Test Dose ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Free Running

A single dose of reserpine (1 mg/kg body weight, injected subcutaneously) induced hyperglycaemia which persisted for at least 6 hours in rats kept in slings, but no significant alteration in the level of blood sugar was observed in free-running rats. The administration of a single dose of reserpine to unrestrained rats 3 hours prior to a test dose of insulin (0.5 units/kg body weight intramuscularly) or of tolbutamide (125 mg/kg per os) resulted in a decrease in the sensitivity of the animals to the hypoglycaemic action of these two compounds. Pretreatment with reserpine (1 mg/kg for 2 days) resulted in a failure of a single dose (0.5 mg/kg) of this compound to elevate blood glucose levels, in restrained rats, but such reserpine pretreated animals displayed a decreased hypoglycaemic response to a test dose of insulin.The hyperglycaemia observed in restrained rats following the injection of a single dose of reserpine was still observed in animals from which the pancreas had been completely removed, indicating that the change in blood glucose level in response to reserpine in these animals was not dependent on the presence of a pancreatic factor.

Influence of Lactobacillus brevis 15 and Lactobacillus plantarum 13 on blood glucose and body weight in rats after high-fructose diet

2015 ◽  
Vol 6 (4) ◽  
pp. 505-512 ◽  
Author(s):  
M. Yakovlieva ◽  
T. Tacheva ◽  
S. Mihaylova ◽  
R. Tropcheva ◽  
K. Trifonova ◽  
...  
Keyword(s):  
Body Weight ◽  
Lactic Acid ◽  
Blood Glucose ◽  
Lactic Acid Bacteria ◽  
Lactobacillus Plantarum ◽  
Lactobacillus Brevis ◽  
Control Group ◽  
Standard Diet ◽  
Glucose Levels ◽  
Blood Glucose Levels

In recent years, many authors have investigated the possible antidiabetic effect of lactic acid bacteria. Lactobacillus species constitute a major part of the lactic acid bacteria group and have been found to exhibit beneficial effects on the development of diabetes and its complications. In the current study, we investigated the effects of newly characterised Bulgarian Lactobacillus strains, Lactobacillus brevis 15 and Lactobacillus plantarum 13, on blood glucose levels and body weight of rats fed a fructose-enriched diet. An experiment was conducted over a period of 8 weeks with 24 2-month-old Wistar rats randomly assigned to receive a standard diet (Con, control group), fructose-enriched diet (Fr group), standard diet with probiotics given twice a week (Pro group), and fructose-enriched diet with probiotics given twice a week (Pro+Fr group). At the end of the experimental period, a statistically significant increase in body weight was observed in all experimental groups (P<0.0001). The highest rise was seen in the fructose group (Fr, 169±19 g), followed by the Pro+Fr group (153±15 g), Pro group (149±13 g), and Con group (141±5 g). Moreover, the final blood glucose levels had risen significantly in the groups receiving fructose either without (Fr; P<0.0001) or with lactobacilli (Pro+Fr; P=0.002), while the rise was insignificant in the group of rats given probiotic supplementation only (Pro, P=0.071) and inexistent in the Con group (P=0.999). The highest elevation of blood glucose levels was observed in the Fr group (3.18 mmol/l), followed by the Pro+Fr group (2.00 mmol/l) whereas the Pro group showed the lowest levels (0.60 mmol/l). The results of our study suggest that the newly characterised Bulgarian Lactobacillus strains, L. brevis 15 and L. plantarum 13, could be considered as possible probiotics and might be able to prevent some metabolic disturbances.

scholarly journals Association between blood glucose levels and Glasgow Outcome Score in patients with traumatic brain injury: secondary analysis of a randomized trial

Trials ◽  
2022 ◽  
Vol 23 (1) ◽  
Author(s):  
Tao Yuan ◽  
Hongyu He ◽  
Yuepeng Liu ◽  
Jianwei Wang ◽  
Xin Kang ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Blood Glucose ◽  
Brain Injury ◽  
Blood Glucose Level ◽  
Glucose Level ◽  
Threshold Effect ◽  
Glasgow Outcome Score ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Average Blood Glucose

Abstract Background Blood glucose levels that are too high or too low after traumatic brain injury (TBI) negatively affect patient prognosis. This study aimed to demonstrate the relationship between blood glucose levels and the Glasgow Outcome Score (GOS) in TBI patients. Methods This study was based on a randomized, dual-center, open-label clinical trial. A total of 208 patients who participated in the randomized controlled trial were followed up for 5 years. Information on the disease, laboratory examination, insulin therapy, and surgery for patients with TBI was collected as candidate variables according to clinical importance. Additionally, data on 5-year and 6-month GOS were collected as primary and secondary outcomes, respectively. For multivariate analysis, a generalized additive model (GAM) was used to investigate relationships between blood glucose levels and GOS. The results are presented as odds ratios (ORs) with 95% confidence intervals (95% CIs). We further applied a two- piecewise linear regression model to examine the threshold effect of blood glucose level and GOS. Results A total of 182 patients were included in the final analysis. Multivariate GAM analysis revealed that a bell-shaped relationship existed between average blood glucose level and 5-year GOS score or 6-month GOS score. The inflection points of the average blood glucose level were 8.81 (95% CI: 7.43–9.48) mmol/L considering 5-year GOS as the outcome and were 8.88 (95% CI 7.43−9.74) mmol/L considering 6-month GOS score as the outcome. The same analysis revealed that there was also a bell relationship between average blood glucose levels and the favorable outcome group (GOS score ≥ 4) at 5 years or 6 months. Conclusion In a population of patients with traumatic brain injury, blood glucose levels were associated with the GOS. There was also a threshold effect between blood glucose levels and the GOS. A blood glucose level that is either too high or too low conveys a poor prognosis. Trial registration ClinicalTrials.gov NCT02161055. Registered on 11 June 2014.

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