Related Experiment Video
Updated: Feb 6, 2026

Author Spotlight: Collecting the Brain and Serum from the Same Mice Fetus to Study Brain Tumor Development
Published on: May 17, 2024
Increased maternal C1q/TNF-related protein-1 (CTRP-1) serum levels in pregnancies with preeclampsia
Deniz Acar1, Ahmet Tayyar1, Aytac Yuksel1
1Maternal Fetal Medicine Unit, Health Sciences University Kanuni Sultan Suleyman Education and Research Hospital, Istanbul, Turkey.
Insights
Serum levels of Complement C1q tumor necrosis factor-related protein-1 (CTRP-1) were elevated in women with preeclampsia. Higher CTRP-1 correlated with increased blood pressure and decreased gestational age and birth weight in these pregnancies.
Area of Science:
- Reproductive biology
- Endocrinology
- Biochemistry
Background:
- Preeclampsia pathogenesis involves metabolic changes and inflammation.
- Complement C1q tumor necrosis factor-related protein-1 (CTRP-1) influences insulin sensitivity, lipid metabolism, and inflammation.
Purpose of the Study:
- To investigate serum CTRP-1 levels in pregnancies complicated by preeclampsia.
Main Methods:
- Serum CTRP-1 concentrations were measured using ELISA.
- Study groups included early-onset preeclampsia (EOPE), late-onset preeclampsia (LOPE), and uncomplicated pregnancies.
Main Results:
- Significantly higher serum CTRP-1 levels were observed in both EOPE and LOPE groups compared to controls.
- No significant difference in CTRP-1 levels was found between EOPE and LOPE groups.
- CTRP-1 levels positively correlated with systolic and diastolic blood pressure and mean UtA PI.
- CTRP-1 levels negatively correlated with gestational age at delivery and birth weight.
Conclusions:
- Serum CTRP-1 levels are significantly elevated in preeclampsia.
- CTRP-1 may play a role in the pathophysiology of preeclampsia.
Abstract:
Objective: Metabolic changes and inflammation are involved in the pathogenesis of preeclampsia. Complement C1q tumor necrosis factor-related protein-1 (CTRP-1) is a pleiotropic molecule that possesses insulin-sensitizing effects and is also involved in lipid metabolism and inflammatory responses. The aim of the study was to investigate CTRP-1 levels in pregnancies with preeclampsia.Material and methods: Serum concentrations of CTRP-1 were measured in 29 pregnant women with early-onset preeclampsia (EOPE), 24 pregnant women with late-onset preeclampsia (LOPE), and 26 women with uncomplicated pregnancies using an enzyme-linked immunosorbent assay method.Results: Patients with both EOPE and LOPE had significantly higher serum concentrations of CTRP-1 compared to the healthy controls (p < .001). However, no significant difference was found between the EOPE and LOPE groups regarding CTRP-1 levels (p = 1.000). Correlation analysis showed that CTRP-1 levels were positively correlated with systolic blood pressure (p < .001), diastolic blood pressure (p < .001), and mean UtA PI (p < .001) but negatively correlated with gestational age at delivery (p = .001) and birth weight (p < .001).Conclusions: Serum CTRP-1 levels were significantly higher in patients with both EOPE and LOPE than in healthy pregnant women.
Related Concept Videos
SN1 Reaction: Stereochemistry
In the first step of an SN1 reaction, the bond between the electrophilic carbon and the leaving group ionizes to generate the carbocation intermediate. The second step of the mechanism is the nucleophilic attack.
In the formed carbocation, the positively charged carbon is sp2 hybridized with a trigonal planar geometry. As all the three substituents lie on the same plane, a plane of symmetry for the...
SN1 Reaction: Kinetics
However, Sir Christopher Ingold and Edward D. Hughes, who studied the kinetics of various nucleophilic substitution reactions, noticed that a tertiary alkyl halide does undergo a nucleophilic substitution reaction in the presence of a weak nucleophile. While studying the substitution...
SN1 Reaction: Mechanism
Firstly, the haloalkane ionizes to generate a carbocation intermediate and a halide ion. This heterolytic cleavage is highly endothermic with large activation energy. The ionization of the substrate, facilitated by a...
Acidity of 1-Alkynes
The acidic strength of hydrocarbons follows the order: Alkynes > Alkenes > Alkanes. The strength of an acid is commonly expressed in units of pKa — the lower the pKa, the stronger the acid. Among the hydrocarbons, terminal alkynes have lower pKa values and are, therefore, more acidic. For example, the pKa values for ethane, ethene, and acetylene are 51, 44, and 25, respectively, as shown here.
Predicting Products: SN1 vs. SN2
With increased substitution on the alkyl halide,...
Preparation of 1° Amines: Gabriel Synthesis
Strong bases like NaOH or KOH deprotonate the phthalimide to form the corresponding anion, which acts as a nucleophile. Further, the anion attacks an...

