117 IN VIVO EVALUATION OF THE CERVICAL STIFFNESS EVOLUTION DURING INDUCED LABOR IN EWES USING ELASTOGRAPHY

2015 ◽  
Vol 27 (1) ◽  
pp. 150 ◽  
Author(s):  
L. Peralta ◽  
E. Mourier ◽  
C. Richard ◽  
P. Chavette-Palmer ◽  
M. Muller ◽  
...  
Keyword(s):  
Induction Of Labour ◽  
Cervical Ripening ◽  
Labour Induction ◽  
Control Group ◽  
Maturation Process ◽  
In Vivo Evaluation ◽  
Perinatal Medicine ◽  
Successful Induction ◽  
Cervical Maturation

Despite numerous advances and intensive research in perinatal medicine, spontaneous preterm birth (PTB) is the leading global cause of neonatal mortality and morbidity. On the other hand, labour has to be induced in ~23% of pregnancies worldwide. Both issues may be related to the distensibility of the cervical tissue. Quantitative and objective monitoring of the cervix ripening may provide a complementary method to identify cases at risk of PTB and assess the likelihood of successful induction of labour. Currently, however, no reliable clinical tools for such a quantitative and objective evaluation exist. Elastography aims at imaging tissue stiffness. All elastography techniques rely on the same basics: an external force is applied to the tissue and the resulting movements are then followed. Supersonic shear imaging (SSI) is a dynamic method that uses the propagation of mechanical waves to excite the tissue. Its speed is tracked then by ultrafast imaging, allowing characterisation of stiffness [Bercoff et al. 2004 IEEE Trans. Ultrason. Ferroelect. Freq. Contr. 51, 396–409]. Understanding the mechanisms that take place in normal pregnancy will allow a better comprehension of the cervical remodelling and lead to better methods of diagnosis of PTB and successful induction of labour. In this work, we propose a preliminary assessment of the evolution of stiffness during the cervical maturation process in the sheep. The main goal was to study the feasibility of elastography using SSI to quantify cervical stiffness during the maturation process and to assess the potential of this technique for diagnosis of preterm labour and for labour induction success. Cervical stiffness was quantified, by 2 different operators, in 9 pregnant ewes in vivo by using SSI. The cervical ripening was induced by a dexamethasone injection in 5 animals, and 4 animals constituted the control group. The stiffness of the second ring of the cervix was quantified over a circular region of interest of 5 mm of diameter during vaginal ultrasound examination. Images were acquired every 4 h during 24 h to monitor the cervical maturation induced by the dexamethasone injection. Cervical stiffness was found to decrease significantly throughout the cervical ripening (from 9.5 ± 0.9 kPa to 5.0 ± 0.8 kPa; P = 2.7e–5). The intraobserver and interobserver repeatability of measurements were assessed using Bland-Altman analysis with 95% CI. The principal findings of the study were that elastography measurements using SSI technique were highly reproducible in all cases. Second, stiffness of the uterine cervix decreases throughout the maturation process induced by the dexamethasone injection. Finally, it was possible to quantify the decrease of stiffness through the cervical maturation process. Elastography may be a valuable method to quantify objectively and noninvasively the cervical stiffness in vivo, and ultimately could be a useful tool for the diagnosis of PTB and the assessment of labour induction success.

scholarly journals Oral mifepristone as adjuvant to prostaglandin E2 (PGE2) gel for preinduction cervical ripening and induction of labour in third trimester

2017 ◽  
Vol 6 (9) ◽  
pp. 3952
Author(s):  
Jitendra D. Mane ◽  
Sanjay Singh ◽  
Anil Kumar Singh
Keyword(s):  
Induction Of Labour ◽  
Cervical Ripening ◽  
Labour Induction ◽  
Control Group ◽  
Study Group ◽  
Third Trimester ◽  
Safety And Efficacy ◽  
Vaginal Deliveries ◽  
Spontaneous Labour ◽  
Unfavourable Cervix

Background: Whenever the intrauterine milieu is not conducive for the foetus and continuation of pregnancy may affect adversely to mother and the fetus, termination of the pregnancy is planned. Objective of this work was to study the safety and efficacy of oral mifepristone as adjuvant to PGE2 gel in pre-induction cervical ripening and induction of labour in third trimester.Methods: 150 patients in third trimester were recruited in this single blind randomized control trial that were planned for delivery with unfavourable cervix. They were randomly allocated into two groups i.e. study group (n = 75) who received Tab. Mifepristone 200 mg orally and control group (n = 75) who received placebo orally. At the end of 48 hours (h), change in the Bishop’s Score was assessed and those with unfavourable cervix or not in labour, were administered PGE2 gel intracervically every 6h, for maximum of 3 doses for pre-induction cervical ripening of cervix. Analysis regarding safety and efficacy of the drug was done with regards to maternal and perinatal outcome.Results: Out of 150 patients, 75 received mifepristone and 75 received placebo. Mean Bishop’s Score showed significant improvement after 48h in study group (R R 5.135, 95% CI 4.78 to 5.48) compared to control group (RR 3.43, 95% CI 3.21 to 3.65). Significant number of women went in spontaneous labour in study group (39 v/s 20) (p - 0.035) in each dose category of PGE2 application. The opportunity to induce labour (with oxytocin) was better in study group in each dose category of intracervical PGE2 gel application. Moreover, lesser number of PGE2 gel was used in study group comparing control group. However, there were no statistical differences in both the groups as far as number of vaginal deliveries and caesearean sections are concerned. Duration of labour in both the groups was same. Neonatal and maternal morbidity was comparable in both the groups.Conclusions: Mifepristone improves Bishops score when given 48 h prior to labour induction along with increased number of spontaneous labour and reduced need for PGE2 gel applications, without increasing maternal or neonatal morbidity.

scholarly journals In vivo evaluation of a recombinant N-acylhomoserine lactonase formulated in a hydrogel using a murine model infected with MDR Pseudomonas aeruginosa clinical isolate, CCASUP2

AMB Express ◽  
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Masarra M. Sakr ◽  
Walid F. Elkhatib ◽  
Khaled M. Aboshanab ◽  
Eman M. Mantawy ◽  
Mahmoud A. Yassien ◽  
...  
Keyword(s):  
Survival Rate ◽  
Murine Model ◽  
Histopathological Examination ◽  
Healing Process ◽  
Bacterial Count ◽  
Treated Group ◽  
Control Group ◽  
In Vivo Evaluation ◽  
Systemic Spread

AbstractFailure in the treatment of P. aeruginosa, due to its broad spectrum of resistance, has been associated with increased patient mortality. One alternative approach for infection control is quorum quenching which was found to decrease virulence of such pathogen. In this study, the efficiency of a recombinant Ahl-1 lactonase formulated as a hydrogel was investigated to control the infection of multidrug resistant (MDR) P. aeruginosa infected burn using a murine model. The recombinant N-acylhomoserine lactonase (Ahl-1) was formulated as a hydrogel. To test its ability to control the infection of MDR P. aeruginosa, a thermal injury model was used. Survival rate, and systemic spread of the infection were evaluated. Histopathological examination of the animal dorsal skin was also done for monitoring the healing and cellular changes at the site of infection. Survival rate in the treated group was 100% relative to 40% in the control group. A decrease of up to 3 logs of bacterial count in the blood samples of the treated animals relative to the control group and a decrease of up to 4 logs and 2.3 logs of bacteria in lung and liver samples, respectively were observed. Histopathological examination revealed more enhanced healing process in the treated group. Accordingly, by promoting healing of infected MDR P. aeruginosa burn and by reducing systemic spread of the infection as well as decreasing mortality rate, Ahl-1 hydrogel application is a promising strategy that can be used to combat and control P. aeruginosa burn infections.

In Vivo Evaluation of Micronucleus Frequencies in Buccal Mucosal Cells of Orthodontic Patients with and Without Fluoride Use

2021 ◽  
pp. 030157422110373
Author(s):  
Prasad Chitra ◽  
GS Prashantha ◽  
Arun Rao ◽  
Harshvardhan S Jois
Keyword(s):  
Metal Ion ◽  
Orthodontic Treatment ◽  
Biological Tissues ◽  
Control Group ◽  
Time Interval ◽  
Ion Release ◽  
In Vivo Evaluation ◽  
Metal Ion Release ◽  
Mucosal Cells

Introduction: Fluoride agents to prevent white spot lesions are used often during orthodontic treatment. The beneficial effects of fluoride, when consumed within permissible limits on dental structures, are well known. Their implications on underlying biological tissues, however, are unknown. Mouthwashes and dentifrices with fluorides are associated with metal ion release into the mouth with possible cell genotoxicity. Since these cariostatic agents are frequently used during orthodontic therapy, a deeper understanding of the effects of fluoride on oral tissues was considered necessary. Methodology: Three groups of patients (30 each)—group 1 (untreated controls), group 2 (non-fluoridated), and group 3 (Fluoridated) were analyzed. Patients in groups 2 and 3 were bonded with the same bracket prescription and treated with similar archwire sequences. Buccal mucosal cells at 4 specific time periods (before treatment, 1 week, 30 days, and 6 months) were collected, using a wooden tongue depressor, and assessed for any nuclear abnormalities. Comparisons of changes were made with an untreated control group and also between the non-fluoridated and fluoridated groups. Relevant conclusions were drawn after analysis of the results. Results: Greater number of nuclei were observed at the 30-day time interval in the fluoridated group, which was statistically significant at P < .001. Conclusion: Use of fluoridated oral hygiene products in patients undergoing fixed orthodontic treatment with NiTi archwires could increase the risk of micronuclei formation in buccal mucosal cells.

scholarly journals A comparative study of intra-cervical foley’s catheter and PGE2 gel for induction of labour at term

2019 ◽  
Vol 8 (9) ◽  
pp. 3689
Author(s):  
Anjali R. Kanada ◽  
Mahima Jain
Keyword(s):  
Side Effects ◽  
Caesarean Section ◽  
Comparative Study ◽  
Foley Catheter ◽  
Induction Of Labour ◽  
Cervical Ripening ◽  
Labour Induction ◽  
Mechanical Methods ◽  
Significant Difference ◽  
Foley’S Catheter

Background: In cervical ripening, before induction of labour, is needed to increase the success of labour induction, to reduce complications and to diminish the rate of caesarean section and duration of labour. Pharmacological preparations are in widespread use for cervical ripening but are not free from side-effects and complications. Mechanical methods, i.e. the use of Foley’s catheter balloon, though effective have not gained much popularity because of the fear of infection. Therefore, the study has been conducted to prove the efficacy and safety of extra amniotic Foley catheter balloon and to compare it with intra-cervical prostaglandin E2 (PGE2) gel. The objective of the study was to the success of induction of labor depends on the cervical status at the time of induction. For effective cervical ripening both Foley's catheter and PGE2 gel are used. The aim of this study was to compare the efficacy of intra cervical Foley's catheter and intra cervical PGE2 gel in cervical ripening for the successful induction of labor.Methods: A randomized, comparative study was conducted in the department of obstetrics and gynaecology, Civil hospital, B.J. Medical College Ahmedabad, during a period of 8 month from September 2018 to April 2019. 100 patients at term with a Bishop's score ≤5 with various indications for induction were randomly allocated to group F (intra-cervical Foley’s catheter) and group P (PGE2 gel) with 50 women included in each group.Results: The groups were comparable with respect to maternal age, gestation age, indication of induction and initial Bishop's score. Both the groups showed significant change in the Bishop's score, 5.10±1.55 and 5.14±1.60 for Foley's catheter and PGE2 gel, respectively, p <0.001. However there was no significant difference between the two groups. There was no significant difference in the side effects and caesarean section rate in both groups. The induction to delivery interval was 16.01±5.50 hours in group F and 16.85 ± 3.81 hours in group P (p=0.073). Apgar scores, birth weights and NICU admissions showed no significant difference between the two groups.Conclusions: The study shows that both Foley's catheter and PGE2 gel are equally effective in pre induction cervical ripening.

scholarly journals Evaluation of pre induction scoring by clinical examination vs transvaginal sonography

2016 ◽  
Vol 6 (1) ◽  
pp. 228
Author(s):  
Sonali Kaur Sharma ◽  
Madhu Nagpal ◽  
CL Thukral
Keyword(s):  
Vaginal Delivery ◽  
Transvaginal Ultrasound ◽  
Cervical Length ◽  
Induction Of Labour ◽  
Labour Induction ◽  
Transvaginal Sonography ◽  
Bishop Score ◽  
Unfavourable Cervix ◽  
Successful Induction ◽  
Singleton Pregnancies

Background: The aim of the study was to find out pre-induction cervical length by TV Sonography, determine Bishops score and to co-relate the obstetric outcome with these two variables.Methods: A study was done on 100 women with singleton pregnancies at 37-42 weeks of gestation, admitted for induction of labour in the Department of Obstetrics and Gynaecology at SGRDIMSR, Vallah, Amritsar, Punjab, India. All women underwent cervical assessment by both transvaginal ultrasound and Bishop Score and the outcome of labour induction was determined.Results: Of the 100 women, 53 women had vaginal delivery and 47 landed into LSCS. Bishop score < 6 and cervical length > 3 cm are cut off values of cervical unfavourablity. Successful induction was achieved among 87.5% and 78% women with favorable cervix according to Bishop Score and Cervical length respectively .Among the 92 and 50 women with unfavourable cervix according to Bishop score and cervical length, 48 (52.17%) and 14 (28%) had vaginal delivery respectively.Conclusions: Hence, cervical length by transvaginal ultrasound is a better predictor for the success of induction of labour as compared with assessment by Bishop Score alone.

scholarly journals A comparative study of intracervical foley’s catheter with oxytocin and vaginal misoprostol for induction of labour

2020 ◽  
Vol 9 (9) ◽  
pp. 3660
Author(s):  
Priyanka . ◽  
Shashi Bala Arya ◽  
Mirdu Sinha ◽  
J. K. Goel
Keyword(s):  
Pregnant Women ◽  
Induction Of Labour ◽  
Labour Induction ◽  
Bishop Score ◽  
Misoprostol Group ◽  
Successful Induction ◽  
Group A ◽  
Vaginal Misoprostol ◽  
Foley’S Catheter ◽  
Group B

Background: Induction of labour implies stimulation of uterine contraction before spontaneous onset of labour with or without ruptured membranes. Aim of this study was to compare the efficacy and safety of intracervical Foley’s catheter with oxytocin and vaginal misoprostol for labour induction at term.Methods: A total 100 term pregnant women were chosen with bishop score <6 and divided into two groups: Foley’s catheter with oxytocin (Group A) and vaginal misoprostol (Group B). In Group A, a 16 F Foley’s catheter introduced beyond internal os and traction applied every 4 hourly to check for expulsion with simultaneous oxytocin infusion (2 mU/min up to 32 mU/min). In Group B, 25 mcg misoprostol administered every 4 hourly (maximum 6 doses or 150 mcg). Data analysed using SPSS software 20.0. A p value <0.05 was considered statistically significant.Results: No statistical difference found between demographic variables between two groups. Both primigravida and multigravida had poor pre-induction bishop score in both groups. Foley’s catheter (80%) and misoprostol group (96%) had successful induction and was statistically significant (p<0.05). Foley’s catheter took more time from induction-delivery both in primigravida and post-dated pregnant women. The rate of cesarean in Foley’s catheter group was high (62.5%) including 33% cases with failed induction. Foley’s catheter had less maternal and neonatal complications, less NICU admission as compared to misoprostol (p>0.05).Conclusions: Misoprostol was found better for successful induction, decreases induction-to-delivery interval and increases vaginal delivery as compared to Foley’s catheter but it needs constant supervision in view of hyperstimulation and tachysystole.

scholarly journals Use of Misoprostol in Pregnancy- A Review Article

2012 ◽  
Vol 22 (2) ◽  
pp. 94-98
Author(s):  
Syeda Ummay Kulsum ◽  
Sabera Khatun ◽  
SM Shahnawaz Bin Tabib
Keyword(s):  
Prostaglandin E2 ◽  
Review Article ◽  
Induction Of Labour ◽  
Cervical Ripening ◽  
Labour Induction ◽  
Pharmacological Agents ◽  
Tablet Form ◽  
Cytoprotective Agent ◽  
Medicine Today

Prostaglandins are the pharmacological agents used for induction of labour and augmentation of labour. Prostaglandin E2 gel is used for cervical ripening and induction of labour. These are however, costly and need to be stored in a refrigerator at a temperature of 2 - 8°C, half life 18 months. The Tablet form of prostaglandin E2 is not available in Bangladesh. Misoprostol, a synthetic prostaglandin (PG) E1 analogue is used orally for the treatment of gastric and duodenal ulcer and used as a cytoprotective agent. It was first used for labour induction in 1987. Prostaglandin can be used in several gynaecological and obstetric conditions. It can be given through several routes. This article will elaborately delinate the role of misoprostol, a prostaglandin in obstetrics and gynaecological conditions. Medicine Today 2010 Volume 22 Number 02 Page 94-98 DOI: http://dx.doi.org/10.3329/medtoday.v22i2.12443

Effect of Arecoline on Regeneration of Injured Peripheral Nerves

2013 ◽  
Vol 41 (04) ◽  
pp. 865-885 ◽  
Author(s):  
Sheng-Chi Lee ◽  
Chin-Chuan Tsai ◽  
Chun-Hsu Yao ◽  
Yuan-Man Hsu ◽  
Yueh-Sheng Chen ◽  
...  
Keyword(s):  
Sciatic Nerve ◽  
Peripheral Nerve ◽  
Nerve Regeneration ◽  
Peripheral Nerve Regeneration ◽  
In Vitro Study ◽  
Control Group ◽  
Neural Cells ◽  
In Vivo Evaluation

The present study provides in vitro and in vivo evaluation of arecoline on peripheral nerve regeneration. In the in vitro study, we found that arecoline at 50 μg/ml could significantly promote the survival and outgrowth of cultured Schwann cells as compared to the controls treated with culture medium only. In the in vivo study, we evaluated peripheral nerve regeneration across a 10-mm gap in the sciatic nerve of the rat, using a silicone rubber nerve chamber filled with the arecoline solution. In the control group, the chambers were filled with normal saline only. At the end of the fourth week, morphometric data revealed that the arecoline-treated group at 5 μg/ml significantly increased the number and the density of myelinated axons as compared to the controls. Immunohistochemical staining in the arecoline-treated animals at 5 μg/ml also showed their neural cells in the L4 and L5 dorsal root ganglia ipsilateral to the injury were strongly retrograde-labeled with fluorogold and lamina I–II regions in the dorsal horn ipsilateral to the injury were significantly calcitonin gene-related peptide-immunolabeled compared with the controls. In addition, we found that the number of macrophages recruited in the distal sciatic nerve was increased as the concentration of arecoline was increased. Electrophysiological measurements showed the arecoline-treated groups at 5 and 50 μg/ml had a relatively larger nerve conductive velocity of the evoked muscle action potentials compared to the controls. These results indicate that arecoline could stimulate local inflammatory conditions, improving the recovery of a severe peripheral nerve injury.

scholarly journals Quantitative Gradient Echo MRI Identifies Dark Matter as a New Imaging Biomarker of Neurodegeneration that Precedes Tissue Atrophy in Early Alzheimer Disease

2021 ◽  
Author(s):  
Satya V.V.N. Kothapalli ◽  
Tammie L. Benzinger ◽  
Andrew. J. Aschenbrenner ◽  
Richard. J. Perrin ◽  
Charles. F. Hildebolt ◽  
...  
Keyword(s):  
Dark Matter ◽  
Alzheimer Disease ◽  
Amyloid Β ◽  
Neuronal Loss ◽  
Imaging Biomarker ◽  
Control Group ◽  
Histopathological Study ◽  
In Vivo Evaluation ◽  
Preclinical Ad

AbstractBackgroundCurrently, brain tissue atrophy serves as in vivo MRI biomarker of neurodegeneration in Alzheimer Disease (AD). However, postmortem histopathological studies show that neuronal loss in AD exceeds volumetric loss of tissue and that loss of memory in AD begins when neurons and synapses are lost. Therefore, in vivo detection of neuronal loss prior to detectable atrophy in MRI is essential for early AD diagnosis.ObjectiveTo apply a recently developed quantitative Gradient Recalled Echo (qGRE) MRI technique for in vivo evaluation of neuronal loss in human hippocampus.MethodsSeventy participants were recruited from the Knight Alzheimer Disease Research Center, representing three groups: Healthy controls [Clinical Dementia Rating® (CDR®)=0, amyloid β (Aβ)-negative), n=34]; Preclinical AD (CDR=0, Aβ-positive, n=19); and mild AD (CDR=0.5 or 1, Aβ-positive, n=17).ResultsIn hippocampal tissue, qGRE identified two types of regions: one, practically devoid of neurons, we designate as “Dark Matter”, the other, with relatively preserved neurons - “Viable Tissue”. Data showed a greater loss of neurons than defined by atrophy in the mild AD group compared with the healthy control group - neuronal loss ranged between 31% and 43% while volume loss ranged only between 10% and 19%. The concept of Dark Matter was confirmed with histopathological study of one participant who underwent in vivo qGRE 14 months prior to expiration.Conclusionin vivo qGRE method identifies neuronal loss that is associated with impaired AD-related cognition but is not recognized by MRI measurements of tissue atrophy, therefore providing new biomarkers for early AD detection.

scholarly journals The In vivo evaluation of anticryptosporidiosis activity of the methanolic extract of the plant Umbilicus rupestris

2019 ◽  
Vol 20 (12) ◽  
Author(s):  
AFAF BENHOUDA ◽  
DJAHIDA BENHOUDA ◽  
MASSINISSA YAHIA
Keyword(s):  
Methanolic Extract ◽  
Activity Level ◽  
Female Rats ◽  
Control Group ◽  
Histopathological Study ◽  
In Vivo Evaluation ◽  
Group I ◽  
Cryptosporidium Oocysts ◽  
Experimental Group

Abstract. Benhouda A, Benhouda D, Yahia M. 2019. In vivo evaluation of anticryptosporidiosis activity of the methanolic extract of the plant Umbilicus rupestris. Biodiversitas 20: 3478-3483. Umbilicus rupestris (Crassulaceae) is a medicinal plant used in general traditional medicine to cure inflammation and irritation of the skin. The present research is aimed to evaluate the antiparasitic activity of the methanolic extract of the plant URMeOH of U. rupestris against the Cryptosporidium infection in immunocompetent and immunosuppressed rats experimentally infected. Twenty-one female rats were divided into two groups. Control group (group I) and experimental group (Group II). The group I was further divided into three equal groups (normal group infected and immunosuppressed infected group). The experimental group was divided into two immunosuppressed and four equal groups and two immunocompetent infected. Cryptosporidium oocysts were isolated from bovine species stools and used to infect rats. Experimental subgroups received URMeOH two as dose 100mg/kg b.w. and 200 mg/kg b.w. and continued until 15 days. Two weeks after the administration of URMeOH, feces of rats were examined for the detection of Cryptosporidium oocysts by Ziehl-Neelsen and immunofluorescence techniques, the animals were sacrificed; their small intestines were processed and examined for the detection of pathological lesions after histopathological study. In addition, the activity of myeloperoxidase (MPO) was measured in sections of the jejunum. Concerned the results, we observed a statistically significant (P<0.001) increase in the number of oocysts of Cryptosporidium in the stool for sub infected immunosuppressed groups and an increase of MPO activity compared to the corresponding subgroups immunocompetent subgroups. The URMeOH could remove Cryptosporidium oocysts from feces and intestinal sections subgroup infected immunocompetent rats receiving URMeOH. Moreover, the oocysts were significantly reduced in all other subgroups experimental infected compared to infected control subgroups. Intestinal sections in all subgroups received URMeOH revealed a more or less normal architecture. In addition, the reduction of MPO activity level was also detected in all experimental subgroups.

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