scholarly journals The role of insulin-like growth factor in prediction and prevention of preterm delivery

2010 ◽  
Vol 67 (11) ◽  
pp. 883-886 ◽  
Author(s):  
Mirjana Bogavac ◽  
Natasa Simin ◽  
Milan Ranisavljevic ◽  
Ljiljana Budisic
Keyword(s):  
Growth Factor ◽  
Pregnant Women ◽  
Preterm Delivery ◽  
Medical Practice ◽  
Fetal Membranes ◽  
Control Group ◽  
Study Group ◽  
Insulin Like Growth Factor ◽  
Prediction And Prevention ◽  
Cervicovaginal Secretion

Background/Aim. Prediction and prevention of preterm delivery remain great challenge. It is important to include in everyday medical practice determination of certain markers that could help identifying pregnant women with preterm delivery. Insulin like growth factor (IGF) is involved in the control mechanism of fetal and placental growth and development. The aim of this study was to examine the presence of insulin-like growth factor binding protein 1 (IGFBP-1) in cervicovaginal secretion of pregnant women with symptoms of preterm labor, but with apparently intact fetal membranes and to point out a possible application of the strip test for detection of phIGFBP-1 in diagnosis of preterm premature rupture of total membranes (PPROM) in everyday medical practice. Methods. The study was performed at the Department for Obstetrics and Gynecology, Clinical Center of Vojvodina between October 2008 and May 2009. The study included 54 pregnant women between 20-35 weeks of gestation (WG), divided into two groups: the study group (16 pregnant women with symptoms of preterm delivery that gave birth before 37 WG) and the control group (38 pregnant women with the normal course of pregnancy that gave birth on term). In cervicovaginal secretion of the examined pregnant women the level of IGFBP-1 was determined by the immunochromatographic assay with monoclonal antibodies 6303 as a detecting antibody (Actim PROM test, Medix Biochemica, Kauniainen, Finland). Results. Gestational age (GA) at delivery in the study group was 32.6 WG and in the control group it was 38.4 WG. Weight of newborns in the study group was 2,021 g and in the control group 3,430 g. IGFBP test was positive in 15 women (93.75%) of the study group, while in the control group it was positive only in 1 woman (2.63%). Conclusion. Test on phIGFBP-1 in cervicovaginal mucus was positive in 93.75% women with preterm delivery, suggesting that this test could be used in diagnosis of silent rupture of fetal membranes and in prediction of preterm delivery.

The effect of local application of insulin-like growth factor for prevention of inner-ear damage caused by electrode trauma

2017 ◽  
Vol 131 (3) ◽  
pp. 245-252
Author(s):  
H Gur ◽  
Y Alimoglu ◽  
U Duzenli ◽  
S Korkmaz ◽  
S Inan ◽  
...  
Keyword(s):  
Growth Factor ◽  
Cochlear Implantation ◽  
Histopathological Examination ◽  
Round Window ◽  
Auditory Brainstem ◽  
The Other ◽  
Control Group ◽  
Study Group ◽  
Insulin Like Growth Factor ◽  
Brainstem Response

AbstractBackground:Electrode insertion during cochlear implantation causes cochlear damage and apoptosis. Insulin-like growth factor applied locally was investigated in 21 rats.Methods:In the sham group, an intracochlear dummy electrode was inserted through the round window. In the control group, after the same insertion procedure, saline-soaked porcine skin gelatine was placed on the round window. In the study group, insulin-like growth factor 1 soaked gelatine was placed on the round window. Auditory brainstem response thresholds were measured and histopathological examination was performed.Results:In the study group, at 2–4 kHz, one rat had deterioration, one showed improvement and the rest had stable thresholds 14 days after intervention. At 6 kHz, four rats showed improvement and the rest remained stable. At 8 kHz, four showed improvement, one had deterioration and two remained stable. In the other groups, hearing loss deteriorated in about half of the rats and remained stable in the rest. The mean post-operative 6 kHz threshold was significantly lower than that immediately after the intervention in the study group, contrary to the other groups. The study group had significantly better mean histopathological grading than the other groups.Conclusion:Local insulin-like growth factor 1 application may protect hearing after cochlear implantation.

scholarly journals The influence of bacterial vaginosis on gestational week of the completion of delivery and biochemical markers of inflammation in the serum

2014 ◽  
Vol 71 (10) ◽  
pp. 931-935 ◽  
Author(s):  
Ana Jakovljevic ◽  
Mirjana Bogavac ◽  
Aleksandra Nikolic ◽  
Mirjana Milosevic-Tosic ◽  
Zoran Novakovic ◽  
...  
Keyword(s):  
Bacterial Vaginosis ◽  
Pregnant Women ◽  
Preterm Delivery ◽  
Biochemical Markers ◽  
Control Group ◽  
Vaginal Fluid ◽  
Study Group ◽  
Markers Of Inflammation ◽  
Increased Risk ◽  
In Pregnancy

Bacground/Aim. Preterm delivery is one of the most common complications in pregnancy, and it is the major cause (75- 80%) of all neonatal deaths. Bacterial vaginosis predisposes to an increased risk of preterm delivery, premature rupture of membrane and miscarriage. In this syndrome normal vaginal lactobacilli, which produce protective H2O2, are reduced and replaced with anaerobic, gram-negative bacteria and others. The aim of this study was to evaluate the influence of bacterial vaginosis on the week of delivery and biochemical markers of inflammation in the serum. Methods. A total of 186 pregnant women were included into this study, between the week 16 and 19 of pregnancy. In the study group there were 76 pregnant women with diagnosed bacterial vaginosis by the criteria based on vaginal Gram-stain Nugent score and Amsel criteria. In the control group there were 110 healthy women with normal vaginal flora. Ultrasound examination was performed in both groups. Vaginal fluid and blood samples were taken to determine biochemical markers with colorimetric methods. Results. The week of delivery was statistically significantly shorter in the study group and the levels of biochemical markers of inflammation (C-reactive protein and fibrinogen in the serum) were statistically significantly higher in women with bacterial vaginosis comparing to the control group. Also the levels of uric acid and white blood cells in the serum were higher in the study group compared to the control one. Conclusion. Our study indicates that the pregnancy complicated with bacterial vaginosis ends much earlier than the pregnancy without it. Also, higher levels of biochemical markers of inflammation in the serum in the study group, similarly to results of other studies, suggest that pathophysiological processes responsible for preterm delivery can begin very early in pregnancy.

scholarly journals UTILITY OF PLACENTAL LEUCINE AMINOPEPTIDASE/OXYTOCINASE IN THE PREDICTION OF PRETERM DELIVERY IN PREGNANT WOMEN WITH THREATENED PRETERM LABOR

2019 ◽  
pp. 301-307
Author(s):  
MIAMI ABD–AL HASSAN ◽  
ISRAA TALIB ABD AL KADIR ◽  
NOOR HUMAM MOHAMMED
Keyword(s):  
Serum Level ◽  
Pregnant Women ◽  
Preterm Delivery ◽  
Gestational Age ◽  
Preterm Labor ◽  
Leucine Aminopeptidase ◽  
Control Group ◽  
Study Group ◽  
Study Objective ◽  
Threatened Preterm Labor

Objective: The study objective was to assess the utility of placental leucine aminopeptidase (P-LAP) marker for the prediction of delivery in patients presented with threatened preterm labor (TPL). Setting: This study was conducted at the Obstetrics and Gynaecology Department of Al-Yarmouk Teaching Hospital in the period from March 2017 to June 2018. Type of Study: This is a prospective case control study. Methods: This study included 90 pregnant women with gestational age from (28-36+6) weeks; 45 of them who presented with preterm uterine contractions were considered as the study group which was further subdivided into three subgroups according to gestational age 28–31+6 weeks, 32– 33+6 weeks, and 34–36+6 weeks. The other 45 pregnant women who presented to the hospital for regular antenatal care visit at comparable gestational age to the study group were considered as the control group. Hence, this study aimed to assess the serum level of P-LAP in both groups and compare it between those delivered preterm from term to assess its applicability as a predictor of preterm labor. Results: Serum level of P-LAP in pregnant women presented with TPL was found to be significantly lower in those delivered preterm (p<0.001), compared to those continued to term and control group especially in gestational ages ≥32 weeks, while the study found P-LAP level to be statistically insignificant in gestational age <32 weeks (p=0.052). The cutoff point for P-LAP serum level was = 21 (IU/ml) that below it, the pregnant women with TPL most probably deliver before 37 weeks of gestation with Sensitivity (85.7%) Specificity (90.3%), Positive predictive value (80.0%) Negative predictive (93.3%). Conclusion: The serum level of P-LAP was lower in women delivered preterm than those delivered at term, so it can be used as one of the markers for the prediction of preterm delivery, especially at gestational age >32 weeks.

scholarly journals Impact of vaginal and cervical colonisation/infection on preterm delivery

2008 ◽  
Vol 65 (4) ◽  
pp. 273-280 ◽  
Author(s):  
Gordana Mijovic ◽  
Goran Lukic ◽  
Nebojsa Jokmanovic ◽  
Snezana Crnogorac ◽  
Nada Kuljic-Kapulica ◽  
...  
Keyword(s):  
Pregnant Women ◽  
Preterm Delivery ◽  
Genital Tract ◽  
Bacterial Infections ◽  
Control Group ◽  
Study Group ◽  
Bacterial Antigen ◽  
Death Cases ◽  
Microbiological Analyses ◽  
Period Of Gestation

Background/Aim. Preterm delivery together with insufficient body weight and death cases in newborns is the main issue in obstetrics. About 40% of preterm delivery is caused by infections. The aim of this study was to investigate whether and which bacterial infections of genital tract can be associated with preterm delivery, and depending on when diagnosis was made. Method. The study involved 216 pregnant women. According to pregnancy outcome, two groups were formed. The study group involved 29 pregnant women who had preterm delivery out of which nine were examined in I trimester, eight in II trimester and 12 in III trimester. The control group involved 187 pregnant women out of which 47 were examined in I trimester, 73 in II trimester and 67 in III trimester. Bacteriological examination of vaginal and cervical swabs was done in all pregnant women. Infection was diagnosed by finding bacterial antigen in cervical swabs or positive cultures of vaginal and/or cervical swabs followed by the presence of the increased number of polymorphonuclears in direct microscopic preparation. Results. The results showed that in III trimester of pregnancy vaginal bacterial infection was statistically more common (p = 0.021) in women who had preterm delivery (66.7%) in relation to women who delivered in term (29.9%). In this period of gestation the increased number of polymorphonuclears in DMP of vaginal swabs is more common in the women of the study group (75%) than in the women of the control group (43.3%). Preterm delivery was registered in 16.1% women whose microbiological analyses were done in I trimester, 9.9% women in whom microbiological analyses were done in II trimester and in 15.2% pregnant women microbiologically tested in III trimester. Conclusion. Based on the obtained results it could be concluded that bacterial infections of genital tract and period of gestation when infection is diagnosed have influence on reducing perinatal morbidity and mortality caused by preterm delivery.

Long-term treadmill training ameliorates endothelium-dependent vasorelaxation mediated by insulin and insulin-like growth factor-1 in hypertension

2015 ◽  
Vol 119 (6) ◽  
pp. 663-669 ◽  
Author(s):  
Yi-Yuan Lin ◽  
Shin-Da Lee ◽  
Chia-Ting Su ◽  
Tsung-Lin Cheng ◽  
Ai-Lun Yang
Keyword(s):  
Growth Factor ◽  
Insulin Receptor ◽  
Treadmill Training ◽  
Control Group ◽  
Insulin Like Growth Factor ◽  
Hypertensive Rats ◽  
Protein Levels ◽  
Significant Difference ◽  
Nos Inhibitors

Dysfunction of insulin and insulin-like growth factor-1 (IGF-1) is associated with the pathophysiology of hypertension. The influence of long-term exercise on vascular dysfunction caused by hypertension remains unclear. We investigated whether long-term treadmill training improved insulin- and IGF-1-mediated vasorelaxation in hypertensive rats. Eight-week-old male spontaneously hypertensive rats (SHR) were randomly divided into sedentary and exercise (SHR-EX) groups. The SHR-EX group was trained on a treadmill for 60 min/day, 5 days/wk, for 8 wk. Wistar-Kyoto rats (WKY) were used as the normal control group. After training, aortic insulin- and IGF-1-mediated vasorelaxation was evaluated in organ baths. Additionally, the roles of phosphatidylinositol 3-kinase (PI3K), nitric oxide synthase (NOS), and aortic protein expression were examined in the three groups. Compared with sedentary SHR and WKY groups, insulin- and IGF-1-mediated vasorelaxation was significantly enhanced to a nearly normal level in the SHR-EX group. After endothelial denudation, blunted and comparable vasorelaxation was found among the three groups. Pretreatment with selective PI3K and NOS inhibitors attenuated insulin- and IGF-1-mediated vasorelaxation, and no significant difference was found among the three groups after the pretreatment. The aortic protein levels of the insulin receptor (IR), IGF-1 receptor (IGF-1R), insulin receptor substrate-1 (IRS-1), and endothelial NOS (eNOS) were also significantly increased in the SHR-EX group compared with the other two groups. These results suggested that treadmill training elicited the amelioration of endothelium-dependent insulin/IGF-1-mediated vasorelaxation partly via the increased activation of PI3K and NOS, as well as the enhancement of protein levels of IR, IGF-1R, IRS-1, and eNOS, in hypertension.

scholarly journals THE EFFECT OF RECTAL PROGESTERONE ON DOPPLER PARAMETERS OF THE UTERINE ARTERIES FOR THE PREVENTION OF PRETERM DELIVERY IN IRAQI POPULATION

2018 ◽  
Vol 11 (10) ◽  
pp. 545
Author(s):  
Fatin Shallal Farhan ◽  
Ban Hadi Hameed ◽  
Muna Abdulghani Zghair
Keyword(s):  
Pregnant Women ◽  
Preterm Labor ◽  
Resistance Index ◽  
Control Group ◽  
Study Group ◽  
Duration Of Treatment ◽  
Uterine Arteries ◽  
Doppler Study ◽  
Threatened Preterm Labor ◽  
Doppler Indices

Objective: The effectiveness of progesterone in the prevention of threatened preterm labor has been established for many years, but the preferable route, dose, and duration of treatment are until now under the evaluation of researches. The aim of this study was to determine the effect of rectal progesterone on Doppler indices of the uterine arteries in pregnant women with threatened preterm delivery.Methods: A prospective case–control study was conducted at the obstetric ward and the Outpatients Department of Al-Yarmouk Teaching Hospital in Baghdad for the period of 1 year from April 1, 2017, to April 1, 2018. 100 women were enrolled in the study, 50 of them were pregnant women with a diagnosis of preterm labor assigned as a study group and the other 50 were apparently healthy pregnant women of the same gestational age assigned as a control group. Doppler study of uterine arteries was done to all participants, and the results were compared for both groups. The patients with preterm labor received nifedipine tocolysis initially until contractions subsided and Doppler study had been repeated for those women after 1 week of rectal progesterone therapy.Results: The study group had a significantly higher resistance index (RI) than the control group (0.58 vs. 0.52) as p<0.05, in spite of the pulsatility index (PI) being higher for the study group compared to the control group (0.78 vs. 0.77) but this difference was not statistically significant. The RI before the therapy (0.58) was significantly higher than the index after therapy (0.52), and the PI was again significantly higher before therapy (0.78) than after therapy (0.71) as p<0.05. During the follow-up period, 3 (6.5%), 4 (8.7), and 39 (84.8%) patients delivered within 1 week, after 1 week, and at term, respectively.Conclusion: Rectal progesterone can arrest threatened preterm labor, and this effect is possible in part explained by its action on uterine arteries.

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