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Search results for: Insulin, human recombinant

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#32653611   2020/06/30 To Up

Poncirin, an orally active flavonoid exerts antidiabetic complications and improves glucose uptake activating PI3K/Akt signaling pathway in insulin resistant C2C12 cells with anti-glycation capacities.

Poncirin, a natural flavanone glycoside present abundantly in many citrus fruits, contains an extensive range of biological activities. However, the antidiabetic mechanism of poncirin is unexplored yet. In this study, we examined the anti-diabetic prospective of poncirin by evaluating its ability to inhibit protein tyrosine phosphatase 1B (PTP1B), α-glucosidase, human recombinant AR (HRAR), rat lens aldose reductase (RLAR), and advanced glycation end-product (AGE) formation (IC = 7.76 ± 0.21, 21.31 ± 1.26, 3.56 ± 0.33, 11.91 ± 0.21, and 3.23 ± 0.09 µM, respectively). Kinetics data and docking studies showed the lowest binding energy and highestaffinityforthemixed and competitivetypeof inhibitorsof poncirin. Moreover, the molecular mechanisms underlying the antidiabetic outcomes of poncirin in insulin resistant C2C12 skeletal muscle cells were explored, which significantly increased glucose uptake and decreased the expression of PTP1B in C2C12 cells. Consequently, poncirin increased GLUT-4 expression level by activating the IRS-1/PI3K/Akt/GSK-3 signaling pathway. Moreover, poncirin (0.5-50 µM) remarkably inhibited the formation of fluorescent AGE, nonfluorescent CML, fructosamine, and β-cross amyloid structures in glucose-fructose-induced BSA glycation during 4 weeks of study. Poncirin also notably prevented protein oxidation demonstrated with decreasing the protein carbonyl and the consumption of protein thiol in the dose-dependent manner. The results clearly expressed the promising activity of poncirin for the therapy of diabetes and its related complications.
Md Yousof Ali, Sumera Zaib, M Mizanur Rahman, Susoma Jannat, Jamshed Iqbal, Seong Kyu Park, Mun Seog Chang

1157 related Products with: Poncirin, an orally active flavonoid exerts antidiabetic complications and improves glucose uptake activating PI3K/Akt signaling pathway in insulin resistant C2C12 cells with anti-glycation capacities.

2 Pieces/Box2 Pieces/Box100ug100ug100ug Lyophilized100.00 ug2 Pieces/Box2 ml100ug100ug100ug100ug Lyophilized

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#32633064   2020/07/06 To Up

Comparison of different protein precipitation and solid-phase extraction protocols for the study of the catabolism of peptide drugs by LC-HRMS.

LC-HRMS-based identification of the products of peptide catabolism is the key to drive the design of more stable compounds. Because the catabolite of a given peptide can be very different from the parent compound and from other catabolites in terms of physicochemical properties, it can be challenging to develop an analytical method that allows recovery and detection of the parent and all parent-related catabolites. The aim of this study was to investigate how the recovery and the matrix effect of peptidic drugs and their catabolites are affected by different protein precipitation (PP) and solid-phase extraction (SPE) protocols. To this purpose, four model peptides representative of different classes (somatostatin, GLP-2, human insulin and liraglutide) were digested with trypsin and chymotrypsin to simulate proteolytic catabolism. The resulting mixtures of the parent peptides and their proteolytic products covering a wide range of relative hydrophobicity (H ) and isoelectric points (pI) were spiked in human plasma and underwent different PP and SPE protocols. Recovery and matrix effect were measured for each peptide and its catabolites. PP with three volumes of ACN or EtOH yielded the highest overall recoveries (more than 50% for the four parent peptides and all their catabolites) among all the tested PP and SPE protocols. Mixed-mode anion exchange (MAX) was the only SPE sorbent among the five tested that allowed to extract all the peptides with recoveries more than 20%. Matrix effect was generally lower with SPE. Overall, it was observed that peptides with either high hydrophilicity (e.g., somatostatin catabolites) or hydrophobicity (GLP-2 and lipidated liraglutide catabolites) had a much narrower choice of PP solvent or SPE protocol. Simulation of catabolism using recombinant enzymes together with in silico calculation of the H and the pI of potential proteolysis products is recommended to select the optimal extraction conditions for the study of peptide catabolism.
Simone Esposito, Domitilla Vanni, Sergio Menta, Laura Orsatti, Edith Monteagudo

1274 related Products with: Comparison of different protein precipitation and solid-phase extraction protocols for the study of the catabolism of peptide drugs by LC-HRMS.

10100 U2 5 G1mg10mg50 2000 IU100.00 ul100ul100ug Lyophilized

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#32623775   2020/07/05 To Up

IGFBP5 enhances the dentinogenesis potential of dental pulp stem cells via JNK and ErK signaling pathways.

Dental Stem cell transplantation has become a new method for tooth tissue regeneration. However, its molecular mechanism of the dentinogenic differentiation is still unclear, limited its application. Our previous studies found that Insulin-like growth factor binding protein 5 (IGFBP5) can promote the osteogenic differentiation of periodontal ligament stem cells and the regeneration of periodontal tissues. This study aims to clarify the effect and mechanism of IGFBP5 on the dentinogenesis of dental pulp stem cells (DPSCs).
Junling Hao, Haoqing Yang, Yangyang Cao, Chen Zhang, Zhipeng Fan

2778 related Products with: IGFBP5 enhances the dentinogenesis potential of dental pulp stem cells via JNK and ErK signaling pathways.

5 x 10A5 cells/vial1 x 10^6 cells/vial1 vial1.5x10(6) cells11 mg100|uI x 10 vials1.5 x 10^6 cells10 ug100ìl x 10 vialsOne Vial: 5 X 10^6 Cells100 ug/vial

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#32623373   2020/07/04 To Up

Growth and metabolic effects of long-term recombinant human growth hormone (rhGH) treatment in short children born small for gestational age: GH-RAST study.

Objectives To study the efficacy and influence on metabolism of recombinant human growth hormone (rhGH) treatment in short children born small for gestational age (SGA). Methods Retrospective, observational, multicenter study in 305 short children born SGA, treated with rhGH during a mean ± SD of 5.03 ± 1.73 years at a mean ± SD dose of 37 ± 8 μg/kg/day. Auxological and metabolic assessment including glucose and lipids profile were collected. Results Mean ± SD age at the start of treatment was 7.11 ± 2.78 years. Height and weight improved significantly until the end of treatment from mean -2.72 (CI95%: -2.81 to -2.63) standard deviation score (SDS) to -1.16 (CI95%: -1.44 to -0.88) SDS and from -1.62 (CI95%: -1.69 to -1.55) SDS to -0.94 (CI95%: -1.14 to -0.74) SDS respectively. Mean height gain was 1.27 (CI95%: 0.99-1.54) SDS. Prepubertal patients showed higher height gain than pubertal children (mean [CI95%] = 1.44 [CI95%: 1.14-1.74] vs. 0.73 [CI95%: 0.22-1.24], p=0.02). Height gain SDS during treatment negatively correlated with chronological age (CA) and bone age (BA) delay and positively correlated with duration of treatment, height gain during first year of treatment, years on prepubertal treatment and height SDS from target height (TH). Glucose, insulin, and triglycerides increased significantly but remained within the normal range. Total and LDL-cholesterol decreased significantly, and HDL-cholesterol remained unchanged. Conclusions rhGH treatment in short SGA children effectively normalized height in most of the patients and showed a safe metabolic profile. Children who benefit the most are those with greater height SDS distance from TH, BA delay, longer duration of treatment and prepubertal treatment initiation.
José I Labarta, Antonio de Arriba, Marta Ferrer, Marisa Loranca, José María Martos, Amparo Rodríguez, María Luz Samaniego, Laura Sánchez-Cenizo

2238 related Products with: Growth and metabolic effects of long-term recombinant human growth hormone (rhGH) treatment in short children born small for gestational age: GH-RAST study.

5 mg500 ìg1 mg100 μg1mg x 2020 ug20ug20 ug96 wells (1 kit)1 mg25 μg5 x 50 ug

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#32615283   2020/06/29 To Up

GLP-1 promotes osteogenic differentiation of human ADSCs via the Wnt/GSK-3β/β-catenin pathway.

Glucagon-like peptide-1 (GLP-1) analogues are promising anti-diabetic drugs which had been shown to have beneficial effects on bone metabolism in clinical practice, but the molecular mechanism remains unclear. In this study, we evaluated whether GLP-1 can affect the "intestine-fat-bone axis" via the Wnt/GSK-3β/β-catenin pathway. We established a diabetic mouse model and then treated mice with GLP-1 analogue liraglutide. The results showed that after liraglutide treatment, glucose tolerance and insulin tolerance were significantly improved in diabetic mice as expected. Moreover, osteogenic markers such as collagenⅠ, Runx2 and OCN were upregulated; and the adipogenic differentiation markers C/EBP-α and PPAR-γ were downregulated, these results indicated that liraglutide could ameliorate the osteogenic metabolism in diabetic mice. In the cell model, human ADSCs (hADSCs) were cultured and induced to undergo osteogenic and adipogenic differentiation under high glucose conditions in vitro and then treated with GLP-1. The results showed that GLP-1 repressed the induction of adipocyte differentiation biomarkers and the secretion of GSK-3β in a dose-dependent manner. In addition, GLP-1 enhanced the expression of osteoblastogenic biomarkers, such as OCN, Runx2 and collagenⅠ, and promoted osteoblastic mineralization. These effects were substantially suppressed by the Wnt signal recombinant human DKK-1 or activated by Wnt pathway agonist LiCl. Silencing of GSK-3β showed that the levels of β-catenin, GSK-3β and Runx2 were significantly increased by 2.46-, 2.05-, 4.44-fold after GLP-1 treatment compared to that observed in the GSK-3β lentiviral group, respectively. We conclude that GLP-1 promotes the osteogenic differentiation of hADSCs via the Wnt/GSK-3β/β-catenin pathway.
Yun Li, Huirong Fu, Hou Wang, Shunkui Luo, Lingling Wang, Jiandi Chen, Hongyun Lu

1224 related Products with: GLP-1 promotes osteogenic differentiation of human ADSCs via the Wnt/GSK-3β/β-catenin pathway.

10μg/vial100μg/vial100ug/vial10μg/vial100μg/vial10μg/vial10ug100μg/vial20 ug100μg/vial100ug Lyophilized10μg/vial

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#32612574   2020/06/16 To Up

Are the Effects of Oral and Vaginal Contraceptives on Bone Formation in Young Women Mediated via the Growth Hormone-IGF-I Axis?

Combined hormonal contraceptive therapy has been associated with negative bone mineral density outcomes that may be route-dependent [i.e., combined oral contraception (COC) vs. contraceptive vaginal ring (CVR)] and involve the hepatic growth hormone (GH)/insulin-like growth factor-I (IGF-I) axis. The objective of the pilot study was to assess the impact of route of contraceptive administration on IGF-I and procollagen type I N-terminal propeptide (PINP) responses to an IGF-I Generation Test. We hypothesized that the peak rise in IGF-I and PINP concentration and area under the curve (AUC) would be attenuated following COC, but not CVR, use. Healthy, premenopausal women not taking hormonal contraception were recruited. Women were enrolled in the control group ( = 8) or randomly assigned to COC ( = 8) or CVR ( = 8) for two contraceptive cycles. IGF-I Generation Tests were used as a probe to stimulate IGF-I release and were completed during the pre-intervention and intervention phases. Serum IGF-I and PINP were measured during both IGF-I Generation Tests. The study was registered at ClinicalTrials.gov (NCT02367833). Compared to the pre-intervention phase, peak IGF-I concentration in response to the IGF-I Generation Test in the intervention phase was suppressed in the COC group ( < 0.001), but not the CVR or Control groups ( > 0.090). Additionally, compared to the pre-intervention phase, PINP AUC during the intervention phase was suppressed in both COC and CVR groups ( < 0.001), while no difference was observed in the control group ( = 0.980). These data suggest that changes in recombinant human GH-stimulated hepatic IGF-I synthesis in response to combined hormonal contraception (CHC) use are dependent on route of CHC administration, while the influence on PINP is route-independent. Future research is needed to expand these results with larger randomized control trials in all age ranges of women who utilize hormonal contraception. www.ClinicalTrials.gov registration NCT02367833.
Heather C M Allaway, Madhusmita Misra, Emily A Southmayd, Michael S Stone, Connie M Weaver, Dylan L Petkus, Mary Jane De Souza

2954 related Products with: Are the Effects of Oral and Vaginal Contraceptives on Bone Formation in Young Women Mediated via the Growth Hormone-IGF-I Axis?

11 L.1 mg20ug

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#32585029   2020/06/25 To Up

Alterations of the GH/IGF-I axis and gut microbiome after traumatic brain injury: a new clinical syndrome?

Pituitary dysfunction with abnormal GH secretion and neurocognitive deficits are common consequences of traumatic brain injury (TBI). Recognizing the comorbidity of these symptoms is of clinical importance; however, efficacious treatment is currently lacking.
Kevin C J Yuen, Brent E Masel, Kent L Reifschneider, Melinda Sheffield-Moore, Randall J Urban, Richard B Pyles

2908 related Products with: Alterations of the GH/IGF-I axis and gut microbiome after traumatic brain injury: a new clinical syndrome?

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#32580141   2020/06/21 To Up

Thrombospondin 1 improves hepatic steatosis in diet-induced insulin-resistant mice and is associated with hepatic fat content in humans.

Nonalcoholic fatty liver disease (NAFLD) is associated with altered production of secreted proteins. Increased understanding of secreted proteins could lead to improved prediction and treatment of NAFLD. Here, we aimed to discover novel secreted proteins in humans that are associated with hepatic fat content using unbiased proteomic profiling strategy, and how the identified Thbs1 modulates lipid metabolism and hepatic steatosis.
Jinyun Bai, Mingfeng Xia, Yaqian Xue, Fengguang Ma, Aoyuan Cui, Yixuan Sun, Yamei Han, Xi Xu, Feifei Zhang, Zhimin Hu, Zhengshuai Liu, Yuxiao Liu, Genxiang Cai, Weitong Su, Xiaoyang Sun, Haifu Wu, Hongmei Yan, Xinxia Chang, Xiqi Hu, Hua Bian, Pu Xia, Jing Gao, Yu Li, Xin Gao

2232 related Products with: Thrombospondin 1 improves hepatic steatosis in diet-induced insulin-resistant mice and is associated with hepatic fat content in humans.

100ug Lyophilized100ug Lyophilized100ug Lyophilized100ug Lyophilized100ug Lyophilized100ug Lyophilized100ug Lyophilized100ug Lyophilized100ug Lyophilized100ug Lyophilized100ug Lyophilized100ug Lyophilized

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#32557273   2020/06/15 To Up

Safety and effectiveness of a somatropin biosimilar in children requiring growth hormone treatment: second analysis of the PATRO Children study Italian cohort.

To investigate the long-term safety (primary endpoint) and effectiveness (secondary endpoint) of the somatropin biosimilar Omnitrope.
L Iughetti, F Antoniazzi, C Giavoli, G Bona, T Aversa, N A Greggio, L Guazzarotti, R Minelli, L Perrone, L Persani, G Pozzobon, L Ragusa, S Stagi, G Tornese, C Zecchino, P Gallinari, H Zouater, P Fedeli, S Zucchini

2103 related Products with: Safety and effectiveness of a somatropin biosimilar in children requiring growth hormone treatment: second analysis of the PATRO Children study Italian cohort.

96 assays1 mg1 mg100.00 ug0.1ml (1mg/ml)100.00 ug1 mg1 mg100 μg500ul

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#32509520   2020/04/07 To Up

Effect of fermented oyster extract on growth promotion in Sprague-Dawley rats.

Oysters () are a popular marine product worldwide and have the advantage of nutritional benefits. This study aimed to investigate the effect of fermented oyster extract (FO) on growth promotion, including analysis of body size, bone microarchitecture, hematology and biochemistry .
Hyesook Lee, Hyun Hwang-Bo, Seon Yeong Ji, Min Yeong Kim, So Young Kim, Minji Woo, Young-Sam Keum, Jeong Sook Noh, Joung-Hyun Park, Bae-Jin Lee, Gi-Young Kim, Eui Kyun Park, Young-Chae Chang, You-Jin Jeon, Yung Hyun Choi

1691 related Products with: Effect of fermented oyster extract on growth promotion in Sprague-Dawley rats.

Protein100ug0.1ml (1mg/ml)1 mg100.00 ug10ml100 μg

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