Search results for “Placenta”

RETRACTED: Leap into Fetal Surgery; In Utero Placental Mesenchymal Stem Cell Therapy, A Contemporary Approach to Treating Myelomeningocele

This article has been retracted on April 10, 2025. VIEW THE RETRACTION NOTICE (https://doi.org/10.14302/issn.2997-2086.jfs-25-5857) Myelomeningocele (MMC), a class of spina bifida is a type of neural tube defect. According to the U.S. Centers for Disease Control and Prevention, each year approximately 1,400 babies born in the United States have spina bifida. The disease manifests with the lack of skin and bone covering the caudal part of the spinal cord. The patient developing such a condition often develops lifelong impaired lower limb mobility accompanied by hydrocephalus, and urinary and bowel incontinence. The available interventions include prenatal and postnatal surgery to fuse the dura. Prenatal surgery performed before 26 weeks of gestation reduces the risk of death or the need for ventriculoperitoneal shunting. It also enhanced results on a comprehensive index for mental and motor function. When compared to postnatal surgery, prenatal surgery reduces the manifestation of several secondary outcomes, including the degree of hindbrain herniation seen in the Chiari II malformation. Stem cell therapy for MMC on animal models of chick, ovine, and rodents with reported cases 15/63, 15, and 136, respectively, using human Embryonic Stem Cells (hESCs), Neural Stem Cells (NSCs), Mesenchymal Stem Cells (MSCs) showed significant coverage of MMC defect and slight neurogenesis was also observed. With an understanding of medical literature about in-utero regenerative capacity, it is to be appreciated that placental stem cells surgically seeded within a biocompatible scaffold of the cell patches can play a part in alleviating the spinal cord manifestation associated with MMC. Documented animal studies show that incorporating Placental Mesenchymal Stem Cells in prenatal surgery has reported improved neurogenesis and lower limb mobility. In an ovine myelomeningocele model, the development of in-utero myelomeningocele repair with human Placental Mesenchymal Stem Cells seeded onto an extracellular matrix (PMSC-ECM) enhances motor findings. The clinical trial for the first stem cell therapy on human subjects known as the “CuRe Trial: Cellular Therapy for In Utero Repair of Myelomeningocele.” is expected to be finished by 2030. So far, the cases undergoing treatment have shown significant leg movement and a greater degree of bowel and urinary control. This FDA-approved clinical trial is envisioned to be the future of treating MMC.

Retraction Note: Leap into Fetal Surgery; In Utero Placental Mesenchymal Stem Cell Therapy, A Contemporary Approach to Treating Myelomeningocele

Anatomical Variants of the Placenta in Sudanese and their Relation to the Neonatal Outcome

Background In recent years great attention has been focused on the structural and histological structures of the placenta and the umbilical cord due to their vital roles in fetal development and neonatal survival. While extensive studies have been documented in this area in the developed world, there is very little published information about the morphological variations that occur in human placenta in Sudan. Therefore, this study was designed to evaluate the structural variations in placental indices and its relation to neonatal outcome. Methods A prospective hospital - based study conducted in Wad Madani Maternity Teaching Hospital Department of Obstetrics and Gynecology between July 2014 and March 2018. Results Mean placental indices for weight, diameter and thickness were 515.51 g, 18.80 cm and 2.43 cm respectively. The mean neonatal indices were 2.95 kg, 33.19 cm and 44.42 cm for weight, head circumference and length respectively. Neonatal weight correlated significantly with placental weight, neonatal length and neonatal head circumference (P < 0.000). On the contrary, neonatal weight had no significant correlation with placental thickness and diameter Conclusion In this study, there was a strong relationship between the placenta and the fetus suggesting that the well-being of the fetus is highly dependent on the placenta since it serves as a link between the mother and the fetus.

Effect of Oxytetracycline Treatment on Postpartum Reproductive Performance in Dairy Buffalo-Cows with Retained Placenta in Egypt

Retained fetal membrane (RFM) is a crucial calving related disorder that affects economic for the farmer and herd health. Retention of Placenta (ROP) is the condition in which the fetal membranes are not expelled within a period of 12 hours after parturition. Buffalo cows (n=34) aged 4-9 years old with 2-6 lactation season were used in the present study. The Experimental buffaloes were divided into either with (n=25) or without (n=9) fetal membrane retention. The objective of this study was to evaluate the effect of oxytetracycline treatment on reproductive performance of buffalo-cows with retained fetal membranes. All buffaloes in treated group received systemic infusion of oxytetracyclin Hcl injection 5% and 10 mg/kg oxytetracycline for 3 days intrauterine. Reproductive performance parameters for all experimental buffaloes were days to first estrous, number of service per conception, days open and pregnancy diagnosis. All reproductive parameters demonstrated significant changes between treated and non-treated animals (P < 0.05). Altogether, the obtained results indicated that retained placenta in buffaloes could be treated successfully by intrauterine infusion of oxytetracycline

Placenta Previa with History of Previous Caesarean Delivery – an Obstetrician's Nightmare

Background: The nature of placenta previa can be unpredictable and harsh on the mother and baby. These complications are often unpredictable, unpreventable and often leave the labour ward team in a dilemma. This Obstetricians' nightmare is fortunately a rare complication. The frequency of placenta previa at the time of delivery average 1/200 births i.e. 0.5%. Placenta previa is still an important cause of maternal and fetal death in our country. The risk factors are Advanced Maternal age, Multi parity, Previous Cesarean Section, Multiple gestation, Previous Abortions, Previous intrauterine surgery, placenta previa in previous pregnancy, Smoking. Objective: Identification of risk factors, the feto-maternal outcome and complications of patients having placenta previa with previous caesarean section. Methodology: This cross sectional study was conducted from July 2012 to June 2015 in Obstetrics and Gynaecology department, Dhaka Medical College hospital. 100 patients of placenta previa were included in this study. Non-probability purposive sampling method was used for selection of patients. Results: In this study, Socio-demographic profiles, Identification of risk factors, the feto-maternal outcome and complications of patients having placenta previa were assessed. The frequency of placenta previa associated with previous cesarean section was 61%. In demographic profiles of the patients in this study - with a history of previous caesarean section, 78.7% patients were in the age group 26-35. Multiparity was predominant on scarred uterus group (63.9%). Here, demonstrated that > 2 previous history of caesarean section was associated with 80.3% of placenta previa. Regarding maternal outcome, complications like massive haemorrhage, ureteral injury, bladder injury, wound infection, DIC, maternal and perinatal mortality were more in the scarred patients than in the unscarred patients. In our study, 29.5% of morbid adhesion of placenta observed in scarred uterus. Conclusions: There is significant association of placenta previa with previous cesarean delivery. So, Careful monitoring of high risk pregnancies is of utmost importance. Avoidance of unnecessary caesarean sections and early week’s pregnancy terminations can minimize the Obstetricians' nightmare.

Live Pregnancy in Non Communicating Horn of Unicornuate Uterus with Placenta Percreta: A Case Report and Review

Objective: Mullerian anomalies of the female genital tract are rare and unicornuate uterus is one such variant: it may present with a rudimentary horn with or without a communication. Pregnancy is rare in a non communicating horn and majority of them end up in rupture during first trimester. The ones which progress to fetal viability are around 10 % and may end up in catastrophic hemorrhage with fetal loss at any time. Case report: We hereby report a rare case of unruptured rudimentary horn pregnancy associated with placenta accreta and delivery of a live born fetus at 34 weeks period of gestation. Around ten cases of such an association have been reported in the past. Conclusion: Diagnosis of pregnancy in a non communicating horn of a unicornuate uterus is challenging especially at term. High index of suspicion and timely delivery of a live fetus has major role in achieving best maternal and neonatal outcome.

Chagas Disease in Dogs

Chagas disease is zoonotic illness or an anthropozoonosis caused by flagellated protozoan parasite Trypanosoma cruzi. This infection presents alarming rates of incidence/prevalence, for this reason, is recognized worldwide as one of the 13 most neglected tropical diseases 1. Numerous studies have demonstrated the existence of domestic dogs infected with T. cruzi across endemic areas ranging from southern United States of America to Argentina 2. The reported prevalence varies widely (1.42-92%), depending on ecoepidemiological and sociocultural factors 3. It is important to emphasize that the natural infection in dogs with T. cruzi occurs in the same way as in humans, that is to say, through active transmission by vectors, contamination by feces infected with the parasite through wounds or the conjunctiva, can also occur by ingestion of infected vectors or tissues of wild animals present in the peridomicile or home 4. The transplacental transmission is also an important mode of transmission in dogs 5. Nevertheless, the main mode of transmission in canine species seems to be the ingestion of infected vectors 6. During the life cycle of T. cruzi the trypomastigotes present in the heces of the triatomines are introduced in the mammalian host by  contamination of the insect bite or mucosal membranes. The metacyclic form can penetrate a variety of phagocytic and nonphagocytic nucleated cells. Once inside the cells the parasite becomes in amastigote, which are multiplicative forms that divide into cells. Due to the high parasitic load they produce the lysis of the cells and escapes into the cytoplasm. The amastigotes transform to slender trypomastigotes which can invade adjacent cells, this forms can be ingested by triatomines and they transform into epimastigotes Finally, after migration to the bug's hindgut, the epimastigotes differentiate into infectious metacyclic trypomastigotes, in this way the life cycle of this microorganism is completed 7.

Intrauterine Deaths in North-Eastern Hungary with National and International Comparison

Objective: Demographic analysis of intrauterine deaths in North-Eastern Hungary with national and international comparison. Materials and Methods: The authors collected data from the National Bureau of Statistics’ 1996-2014 database to assess frequency, gestational age, maternal age and education for six counties of the region. 722 individual cases were analyzed. A regional survey was initiated to collect more detailed data on living environment in the region between 2010 and 2014 through community midwifery services records. Results: Data over 20 years showed most intrauterine deaths (Perinatal mortality, Late fetal death, Stillbirth] occurred between 24th and 36th weeks of which 35% occurred in the North-Eastern region of Hungary. The causes of intrauterine deaths were placental abruption, cord accident, placental insufficiency, malformations and intrauterine infection. Detailed analysis regarding attendance at either the Obstetricians or the community midwifery services, the patient’s medical history and the patients’ compliance were reported, compliance in 1% completely lacked. Gravidity and multiparity were associated risk factors. A significant proportion was associated with teenage pregnancy, low maternal education, smoking risks, unemployment, dependence on social support, unhygienic environment and smaller accommodations. Lack of cooperation during antenatal care was significant. Conclusion: Frequency and distribution of intrauterine deaths in North-Eastern Hungary show a similar picture as those of socio-economic indices. The unfavorable trend came to an end in 2015, however the national statistics did not show any improvement. The solution to the problem seems to be independent of the service provision, therefore, socio-economic development of affected counties is warranted, and financial incentives and/or government aid provided during pregnancy may improve future perinatal outcomes.

Signal Transduction of hCG Induces Decidualization and Uterine Receptivity

All independent experimental data on epithelial and glandular cells lines of human endometrium support the evidence for a rapid production of eicosanoids from the LH/hCG receptors when exposed to the hCG hormone. Prostaglandins rapidly act on the surrounding endometrial stromal cells throughout the adenylyl cyclase enzyme leading to very large amounts of cAMP and angiogenic factors (VEGF) production. The cAMP is the most important intracellular second messenger and along with progesterone accomplishes the full process of decidualization and acquisition of receptivity after estrogenic priming of the endometrium. The status of uterine receptivity lasts few days only and timing for successful embryo-signal transduction system activation by the endometrium is probably short. In absence of in vivo embryonic signals it is impossible to predict, on individual bases, how the intensity of all the complex interlinked molecular changes of decidualization might ever be in case of exposure to native hCG. In other terms, amount of prostaglandins and cAMP produced in response to variably glycosylated hCG are all, in vivo, not measurable variables and should be viewed as a “wave” of biochemical chain reactions. Embryonic hCG is secreted in form of multiple isomers having an unpredictable variable level of glycosylation and control of this variable remains elusive. During cycles of ovarian stimulation many drugs (FSH, LH, HCG) interact with different G-protein coupled receptors (GPCRs) making it possible to alter the prostaglandins-mediated decidualization process ready to be elicited only by hCG of pregnancy. Since the molecules (cAMP and progesterone) controlling endometrial stromal cells differentiation into decidual cells are critical for successful implantation and placenta formation, the evidence of fast eicosanoids production associated with endometrial LH/hCG receptors exposure to hCG and the potential by human endometrium to produce, in response, very large amounts of cAMP has biological and clinical relevance.

Breast Feeding and Melatonin: Implications for Improving Perinatal Health

The biological underpinnings that drive the plethora of breastfeeding benefits over formula-feeding is an area of intense research, given the cognitive and emotional benefits as well as the offsetting of many childhood- and adult-onset medical conditions that breast-feeding provides. In this article, we review the research on the role of melatonin in driving some of these breastfeeding benefits. Melatonin is a powerful antioxidant, anti-inflammatory and antinociceptive as well as optimizing mitochondrial function. Melatonin is produced by the placenta and, upon parturition, maternal melatonin is passed to the infant upon breastfeeding with higher levels in night-time breast milk. As such, some of the benefits of breastfeeding may be mediated by the higher levels of maternal circulating night-time melatonin, allowing for circadian and antioxidant effects, as well as promoting the immune and mitochondrial regulatory aspects of melatonin; these actions may positively modulate infant development. Herein, it is proposed that some of the benefits of breastfeeding may be mediated by melatonin's regulation of the infant's gut microbiota and immune responses. As such, melatonin is likely to contribute to the early developmental processes that affect the susceptibility to a range of adult onset conditions. Early research on animal models has shown promising results for the regulatory role of melatonin.