Cervical amputation versus vaginal hysterectomy: a population-based register study.

INTRODUCTION AND HYPOTHESIS: Surgical management of uterine prolapse varies greatly and recently uterus-preserving techniques have been gaining popularity. The aim of this study was to compare patient-reported outcomes after cervical amputation versus vaginal hysterectomy, with or without concomitant anterior colporrhaphy, in women suffering from pelvic organ prolapse. METHOD: We carried out a population-based longitudinal cohort study with data from the Swedish National Quality Register for Gynecological Surgery. Between 2006 and 2013, a total of 3,174 patients with uterine prolapse were identified, who had undergone primary surgery with either cervical amputation or vaginal hysterectomy, with or without concomitant anterior colporrhaphy. Pre- and postoperative prolapse-related symptoms and patient satisfaction were assessed, in addition to complications and adverse events. Between-group comparisons were performed using univariate and multivariate logistic regression. RESULTS: There were no differences between the two groups in neither symptom relief nor patient satisfaction. In both groups a total of 81 % of the women reported the absence of vaginal bulging 1 year after surgery and a total of 89 % were satisfied with the result of the operation. The vaginal hysterectomy group had a higher rate of severe complications than the cervical amputation group, 1.9 % vs 0.2 % (p < 0.001). The vaginal hysterectomy group also had a longer duration of surgery and greater perioperative blood loss, in addition to longer hospitalization. CONCLUSIONS: Cervical amputation seems to perform equally well in comparison to vaginal hysterectomy in the treatment of uterine prolapse, but with less morbidity and a lower rate of severe complications.

Does the choice of suture material matter in anterior and posterior colporrhaphy?

INTRODUCTION AND HYPOTHESIS: The optimal suture material in traditional prolapse surgery is still controversial. Our aim was to investigate the effect of using sutures with rapid (RA) or slow (SA) absorption, on symptomatic recurrence after anterior and posterior colporrhaphy. METHODS: A population-based longitudinal cohort study with data from the Swedish National Quality Register for Gynecological Surgery. A total of 1,107 women who underwent primary anterior colporrhaphy and 577 women who underwent primary posterior colporrhaphy between September 2012 and September 2013 were included. Two groups in each cohort were created based on which suture material was used. Pre- and postoperative prolapse-related symptoms and patient satisfaction were assessed. RESULTS: We found a significantly lower rate of symptomatic recurrence 1 year after anterior colporrhaphy in the SA suture group compared with the RA suture group, 50 out of 230 (22 %) vs 152 out of 501 (30 %), odds ratio 1.6 (CI 1.1-2.3; p = 0.01). The SA group also had a significantly higher patient satisfaction rate, 83 % vs 75 %, odds ratio 1.6 (CI 1.04-2.4), (p = 0.03). Urgency improved significantly more in the RA suture group (p < 0.001). In the posterior colporrhaphy cohort there was no significant difference between the suture materials. CONCLUSIONS: This study indicates that the use of slowly absorbable sutures decreases the odds of having a symptomatic recurrence after an anterior colporrhaphy compared with the use of rapidly absorbable sutures. However, the use of RA sutures may result in less urgency 1 year postoperatively. In posterior colporrhaphy the choice of suture material does not affect postoperative symptoms.

Urodynamic assessment of anterior vaginal wall surgery: a randomized comparison between colporraphy and transvaginal mesh.

AIMS: To investigate the urodynamic effects of anterior vaginal wall prolapse surgery using either trocar guided transvaginal mesh or colporraphy. METHODS: A prospective, randomized multicenter trial enrolling 50 patients: 27 underwent anterior colporrhaphy and 23 anterior trocar guided transvaginal mesh. Urodynamic assessment was performed pre- and two months postoperatively. RESULTS: De novo stress urinary incontinence was significantly more common after trocar guided transvaginal mesh surgery compared to colporraphy. In comparison to baseline urodynamics, transvaginal mesh surgery resulted in a significant decrease in maximal urethral closing pressures (MUCP) whereas conventional anterior colporraphy had no significant effect on urodynamic parameters. CONCLUSION: Trocar guided transvaginal mesh of anterior vaginal wall prolapse results in a lowering of MUCPs and increases the risk for de novo stress urinary incontinence compared to colporraphy.

Generation of hepatocyte-like cells from in vitro transdifferentiated human fetal pancreas.

Although the appearance of hepatic foci in the pancreas has been described in animal experiments and in human pathology, evidence for the conversion of human pancreatic cells to liver cells is still lacking. We therefore investigated the developmental plasticity between human embryonic pancreatic cells and liver cells. Cells were isolated and expanded from 7-8-week-old human fetal pancreata (HFP) and were characterized for the absence and presence of pancreatic and hepatic markers. In vitro expanded HFP were treated with fibroblast growth factor 2 (FGF2) and dexamethasone (DX) to induce a liver phenotye in the cells. These treated cells in various passages were further studied for their capacity to be functional in hepatic parenchyma following retrorsine-induced injury in nude C57 black mice. Amylase- and EPCAM-positive-enriched cells isolated from HFP and treated with FGF2 and DX lost expression of pancreatic markers and gained a liver phenotype. Hepatic differentiation was based on the expression (both at the mRNA and protein level) of liver markers albumin and cytokeratin 19. When transplanted in vivo into nude mice treated with retrorsine, both cell types successfully engrafted and functionally differentiated into hepatic cells expressing human albumin, glycogen, dipeptidyl peptidase, and gamma-glutamyltranspeptidase. These data indicate that human fetal pancreatic cells have a capacity to alter their gene expression profile in response to exogenous treatment with FGF2 and DX. It may be possible to generate an unlimited supply of hepatocytes in vitro for cell therapy.

Long-term culture and neuronal survival after intraspinal transplantation of human spinal cord-derived neurospheres.

There is heterogeneity in neural stem and progenitor cell characteristics depending on their species and regional origin. In search for potent in vitro-expanded human neural precursor cells and cell therapy methods to repair the injured human spinal cord, the possible influence exerted by intrinsic cellular heterogeneity has to be considered. Data available on in vitro-expanded human spinal cord-derived cells are sparse and it has previously been difficult to establish long-term neurosphere cultures showing multipotentiality. In the present paper, human spinal cord-derived neurospheres were cultured in the presence of EGF, bFGF and CNTF for up to 25 passages (>350 days) in vitro. In contrast to the human first trimester subcortical forebrain, spinal cord tissue>9.5 weeks of gestation could not serve as a source for long-term neurosphere cultures under the present conditions. After withdrawal of mitogens, cultured neurospheres (at 18 passages) gave rise to cells with neuronal, astrocytic and oligodendrocytic phenotypes in vitro. After transplantation of human spinal cord-derived neurospheres to the lesioned spinal cord of immuno-deficient adult rats, large numbers of cells survived at least up to 6 weeks, expressing neuronal and astrocytic phenotypes. These results demonstrate that it is possible to expand and maintain multipotent human spinal cord-derived neurospheres in vitro for extended time-periods and that they have promising in vivo potential after engraftment to the injured spinal cord.

Cellular composition of long-term human spinal cord- and forebrain-derived neurosphere cultures.

In vitro expanded neural precursor cells (NPCs) may provide a stable source for cell therapy. In search of the optimal cell source for spinal cord repair, we investigated influences of gestational age, regional heterogeneity, and long-term in vitro propagation. The cellular content of neurosphere cultures prior to and after in vitro differentiation was studied by immunocytochemistry and flow cytometry. Human forebrain and spinal cord NPCs deriving from first-trimester tissue were cultured as neurospheres in the presence of epidermal growth factor, basic fibroblast growth factor, and ciliary neurotrophic factor. Proteins characteristic for embryonic stem cells, i.e., Tra-1-60, Tra-1-81, and SSEA-4, were present in approximately 0.5% of the cells in donor tissues and neurospheres. The proportions of nestin- and proliferating cell nuclear antigen-immunoreactive (IR) cells were also maintained, whereas the CD133-IR population increased in vitro. Glial fibrillary acidic protein-IR cells increased in number, and in contrast the fraction of beta-tubulin III-IR cells decreased, at and beyond passage 5 in spinal cord but not forebrain cultures. However, dissociated and in vitro-differentiated forebrain- and spinal cord-derived neurospheres generated similar proportions of neurons, astrocytes, and oligodendrocytes. Gestational age of the donor tissue, which ranged from 4.5 to 12 weeks for forebrain and from 4.5 to 9.5 weeks for spinal cord, did not affect the proportion of cells with different phenotypes in culture. Thus, cellular composition of human neurosphere cultures differs as a result of long-term in vitro propagation and regional heterogeneity of source tissue, despite expansion under equal culture conditions. This could in turn imply that human spinal cord and forebrain NPCs present different repair potentials in in vivo settings.