Leptin ELISA Kit

Catalog No. ABIN411318

The Human Leptin ELISA Kit (ABIN411318) is a Colorimetric ELISA Kit designed to quantify Human Leptin. This ELISA Kit has been cited in 17 publications.

Quick Overview for Leptin ELISA Kit (ABIN411318)

Target: Leptin (LEP)

Binding Specificity: AA 22-167

Reactivity: Human

Detection Method: Colorimetric

Method Type: Sandwich ELISA

Detection Range: 62.5 pg/mL - 4000 pg/mL

Application: ELISA

Sample Type: Cell Culture Supernatant, Cell Lysate, Plasma (EDTA), Plasma (heparin), Serum

Product Details Leptin ELISA Kit

Minimum Detection Limit: 62.5 pg/mL

Purpose: Sandwich Human Leptin ELISA Kit to quantitate Human LEP in cell culture supernatants, cell lysates, serum and plasma (heparin, EDTA).

Analytical Method: Quantitative

Specificity: Expression system for standard: E.coli
Immunogen sequence: V22-C167

Capture antibody and Detection antibody: monoclonal antibody from mouse, polyclonal antibody from goat

Cross-Reactivity (Details): There is no detectable cross-reactivity with other relevant proteins.

Sensitivity: < 10 pg/mL

Components:

1. Pre-coated 96-well strip microplate
2. Standard
3. Biotinylated antibody (100x)
4. Avidin-Biotin-Peroxidase Complex (100x)
5. Sample Diluent
6. Antibody Diluent
7. Avidin-Biotin-Peroxidase Diluent
8. Color Developing Reagent (TMB)
9. Stop Solution
10. Wash Buffer (25x)
11. Adhesive plate sealers

Material not included: Microplate Reader capable of reading absorbance at 450nm. Incubator. Automated plate washer (optional). Pipettes and pipette tips capable of precisely dispensing 0.5 μL through 1 mL volumes of aqueous solutions. Multichannel pipettes are recommended for large amount of samples. Deionized or distilled water. 500 mL graduated cylinders. Test tubes for dilution.

Application Details

Application Notes: Before using Kit, spin tubes and bring down all components to bottom of tube. Duplicate well assay was recommended for both standard and sample testing.

Sample Volume: 100 μL

Plate: Pre-coated

Protocol: ELISA Kit is based on standard sandwich enzyme-linked immune-sorbent assay technology. An antibody has been precoated onto 96-well plates. Standards and test samples are added to the wells, a biotinylated detection antibody specific for target is added subsequently and then followed by washing with PBS or TBS buffer. Avidin-Biotin-Peroxidase Complex was added and unbound conjugates were washed away with PBS or TBS buffer. HRP substrate TMB was used to visualize HRP enzymatic reaction. TMB was catalyzed by HRP to produce a blue color product that changed into yellow after adding acidic stop solution. The density of yellow is proportional to the target amount in sample captured in plate.

Assay Precision: Intra-Assay Precision (CV%): 7.6%, 6.7%, 5.2%
Inter-Assay Precision (CV%): 8.4%, 8%, 7%

Restrictions: For Research Use only

Handling

Handling Advice: Avoid multiple freeze-thaw cycles.

Storage: -20 °C,4 °C

Storage Comment: Store at 4°C for 6 months, at -20°C for 12 months. Avoid multiple freeze-thaw cycles (Ships with gel ice, can store for up to 3 days in room temperature. Freeze upon receiving.)

Expiry Date: 12 months

References for Leptin ELISA Kit (ABIN411318)

Buturak, Değirmencioğlu, Bayrak, Kırış, Karakurt, Demir, Sürgit, Ertürk: "Elective percutaneous coronary intervention leads to significant changes in serum resistin, leptin, and adiponectin levels regardless of periprocedural myocardial injury: an observational study." in: Anatolian journal of cardiology, Vol. 16, Issue 12, pp. 940-946, (2018) (PubMed).

He, Le, Frediani, Winterberg, Jin, Liverman, Hernandez, Cleeton, Vos: "Cardiometabolic risks vary by weight status in pediatric kidney and liver transplant recipients: A cross-sectional, single-center study in the USA." in: Pediatric transplantation, Vol. 21, Issue 6, (2018) (PubMed).

Acar, Paketçi, Küme, Tuhan, Gürsoy Çalan, Demir, Böber, Abacı: "Serum galectin-1 levels are positively correlated with body fat and negatively with fasting glucose in obese children." in: Peptides, Vol. 95, pp. 51-56, (2018) (PubMed).

Altay, Seçil, Demir, Atik, Akıncı, Özdemir Kutbay, Keskin Temeloğlu, Yıldırım Şimşir, Özışık, Demir, Eren, Tuna, Aytaç, Onay, Akıncı: "Determining residual adipose tissue characteristics with MRI in patients with various subtypes of lipodystrophy." in: Diagnostic and interventional radiology (Ankara, Turkey), Vol. 23, Issue 6, pp. 428-434, (2018) (PubMed).

Algul, Ozdenk, Ozcelik: "Variations in leptin, nesfatin-1 and irisin levels induced by aerobic exercise in young trained and untrained male subjects." in: Biology of sport, Vol. 34, Issue 4, pp. 339-344, (2018) (PubMed).

Küme, Acar, Tuhan, Çatlı, Anık, Gürsoy Çalan, Böber, Abacı: "The Relationship between Serum Zonulin Level and Clinical and Laboratory Parameters of Childhood Obesity." in: Journal of clinical research in pediatric endocrinology, Vol. 9, Issue 1, pp. 31-38, (2017) (PubMed).

Tokgöz, Işık, Akbari, Kume, Sayın, Erdal, Arslan: "Perilipin polymorphisms are risk factors for the development of obesity in adolescents? A case-control study." in: Lipids in health and disease, Vol. 16, Issue 1, pp. 52, (2017) (PubMed).

Naini, Vahdat, Hedaiati, Shahzeidi, Pezeshki, Nasri et al.: "The effect of vitamin D administration on serum leptin and adiponectin levels in end-stage renal disease patients on hemodialysis with vitamin D deficiency: A placebo-controlled double-blind clinical ..." in: Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences, Vol. 21, pp. 1, (2016) (PubMed).

Wu, Weng, Lai, Tsai, Liu, Lee, Tsai: "Effect of Lactobacillus plantarum Strain K21 on High-Fat Diet-Fed Obese Mice." in: Evidence-based complementary and alternative medicine : eCAM, Vol. 2015, pp. 391767, (2015) (PubMed).

Çatl?, An?k, Küme, Çalan, Dündar, Böber, Abac?: "Serum nesfatin-1 and leptin levels in non-obese girls with premature thelarche." in: Journal of endocrinological investigation, Vol. 38, Issue 8, pp. 909-13, (2015) (PubMed).

Rasekhi, Karandish, Jalali, Mohammadshahi, Zarei, Saki, Shahbazian: "Phylloquinone supplementation improves glycemic status independent of the effects of adiponectin levels in premonopause women with prediabetes: a double-blind randomized controlled clinical trial." in: Journal of diabetes and metabolic disorders, Vol. 14, Issue 1, pp. 1, (2015) (PubMed).

Yang, Zhang, Fu, Yang: "Leptin and IL-8: two novel cytokines screened out in childhood lead exposure." in: Toxicology letters, Vol. 227, Issue 3, pp. 172-8, (2014) (PubMed).

Hajihashemi, Azadbakht, Hashemipor, Kelishadi, Esmaillzadeh: "Whole-grain intake favorably affects markers of systemic inflammation in obese children: a randomized controlled crossover clinical trial." in: Molecular nutrition & food research, Vol. 58, Issue 6, pp. 1301-8, (2014) (PubMed).

Liu, Gu, Zhao, An, Yang: "Glypican 4 may be involved in the adipose tissue redistribution in high-fat feeding C57BL/6J mice with peroxisome proliferators-activated receptor ? agonist rosiglitazone treatment." in: Experimental and therapeutic medicine, Vol. 8, Issue 6, pp. 1813-1818, (2014) (PubMed).

Karadag, Ertugrul, Kalkan, Bilgili, Celik, Takci, Balahoroglu, Calka: "The effect of acitretin treatment on insulin resistance, retinol-binding protein-4, leptin, and adiponectin in psoriasis vulgaris: a noncontrolled study." in: Dermatology (Basel, Switzerland), Vol. 227, Issue 2, pp. 103-8, (2013) (PubMed).

Xie, Yang, Zou, Cheng, Wang, Jiang, Xiao, Wang, Liu: "Influence of the core circadian gene "Clock" on obesity and leptin resistance in mice." in: Brain research, Vol. 1491, pp. 147-55, (2012) (PubMed).

Yao, Li, Zhao, Zeng, Shen, Xiang, Xiao: "Anti-obesity effect of an isoflavone fatty acid ester on obese mice induced by high fat diet and its potential mechanism." in: Lipids in health and disease, Vol. 9, pp. 49, (2010) (PubMed).

Target Details for Leptin

Target: Leptin (LEP)

Alternative Name: LEP

Background:

Background: Leptin (or obese, OB) is a circulating hormone that is expressed abundantly and specifically in the adipose tissue. Human ob protein is a 166-amino acid polypeptide with a putative signal sequence and is 84 and 83 % homologous to the mouse and rat ob proteins, respectively. Northern blot analysis reveals that OB RNA is present at a high level in adipose tissue but at much lower levels in placenta and heart. Indeed, Leptin is first described as an adipocyte-derived signalling factor, which, after interaction with its receptors, induces a complex response including control of bodyweight and energy expenditure. Leptin seems in addition to its role in metabolic control to have important roles in reproduction and neuroendocrine signalling. Leptin is a powerful inhibitor of bone formation in vivo. Comparative mapping of mouse and human DNA indicates that the ob gene is located within a region of mouse chromosome 6 that is homologous to a portion of human chromosome 7q. The standard product used in this kit is recombinant human Leptin.

Gene Full Name: leptin

Gene ID: 3952

UniProt: P41159

Pathways: JAK-STAT Signaling, AMPK Signaling, Hormone Transport, Peptide Hormone Metabolism, Hormone Activity, Negative Regulation of Hormone Secretion, Regulation of Carbohydrate Metabolic Process, Feeding Behaviour, Monocarboxylic Acid Catabolic Process