Hiatal failure: effects of pregnancy, delivery, and pelvic floor disorders on level III factors.

INTRODUCTION AND HYPOTHESIS: The failure of the levator hiatus (LH) and urogenital hiatus (UGH) to remain closed is not only associated with pelvic floor disorders, but also contributes to recurrence after surgical repair. Pregnancy and vaginal birth are key events affecting this closure. An understanding of normal and failed hiatal closure is necessary to understand, manage, and prevent pelvic floor disorders. METHODS: This narrative review was conducted by applying the keywords "levator hiatus" OR "genital hiatus" OR "urogenital hiatus" in PubMed. Articles that reported hiatal size related to pelvic floor disorders and pregnancy were chosen. Weighted averages for hiatal size were calculated for each clinical situation. RESULTS: Women with prolapse have a 22% and 30% larger LH area measured by ultrasound at rest and during Valsalva than parous women with normal support. Women with persistently enlarged UGH have 2-3 times higher postoperative failure rates after surgery for prolapse. During pregnancy, the LH area at Valsalva increases by 29% from the first to the third trimester in preparation for childbirth. The enlarged postpartum hiatus recovers over time, but does not return to nulliparous size after vaginal birth. Levator muscle injury during vaginal birth, especially forceps-assisted, is associated with increases in hiatal size; however, it only explains a portion of hiatus variation-the rest can be explained by pelvic muscle function and possibly injury to other level III structures. CONCLUSIONS: Failed hiatal closure is strongly related to pelvic floor disorders. Vaginal birth and levator injury are primary factors affecting this important mechanism.

Age, parity, and prolapse: interaction and influence on levator bowl volume.

INTRODUCTION AND HYPOTHESIS: The objective was to test the hypotheses that a linear relationship exists between age and levator bowl volume (LBV); and that age, parity, and prolapse are independently associated with LBV. METHODS: We conducted a secondary analysis of data from nulliparous women, parous controls, and prolapse (Pelvic Organ Prolapse Quantification (POP-Q) Ba ≥ 1 cm) cases from each of three age groups: young (≤40), mid-age (50-60), and older (≥70). LBV was measured using MRI at rest and Valsalva as the 3D space contained above the levator ani muscles and below the sacrococcygeal junction-to-inferior pubic point reference plane. Linear regression models were used to examine the effects of age, parity, prolapse, and their interactions (age*parity and age*prolapse) on LBV. RESULTS: Each group consisted of 9-12 women. LBVRest increased with age in a nonlinear fashion. For nulliparous women, the median value increased 4.7% per decade from the young to mid-age group and 84% per decade from the mid-age to older group; for parous controls, the corresponding increases were 38% and -0.5%; and for women with prolapse, they were 46% and 11%. Age and prolapse status (both p<0.001) were found to be significant independent predictors of LBVRest. Interactions between age*prolapse (p=0.003) and age*parity (p=0.045) were also independently associated with LBVRest. CONCLUSIONS: Parity and prolapse influence how age affects LBVRest. In nulliparous women, age had little effect on LBVRest until after mid-age. For women with prolapse, LBVRest increased at a much earlier age, with the biggest difference occurring between young and mid-age women.

Mediating effects of coping styles on the relationship between family resilience and self-care status of adolescents with epilepsy transitioning to adult healthcare: A cross-sectional study in China.

PURPOSE: This study aimed to explore the relationship between family resilience, coping styles, and self-care among Chinese adolescents with epilepsy. DESIGN AND METHODS: A total of 1238 adolescents with epilepsy in nine tertiary hospitals in China participated in a cross-sectional survey conducted from May 2018 to March 2020. Structural equation modeling was used to analyze the mediating effect. RESULTS: The total scores for family resilience and coping styles were positively correlated with the total self-care status score of adolescents with epilepsy during their transition (r = 0.209, 0.202, P < 0.01). Family resilience was positively correlated with coping style (r = 0.450, P < 0.01). The modified model's fit index included χ2/df = 1.970, P = 0.001, RMSEA = 0.054, TLI = 0.973, CFI = 0.978, GFI = 0.941, AGFI = 0.917, NFI = 0.956, and IFI = 0.978. The confidence interval (CI) was 0.004-0.140 for the indirect effect and 0.033-0.306 for the direct effect. CONCLUSIONS: The self-care status of adolescents with epilepsy during the transitional period is closely related to coping style and family resilience. Coping style mediates family resilience and self-care status. PRACTICE IMPLICATIONS: Healthcare teams should pay attention to the coping ability of adolescents with epilepsy to help them transition smoothly and to improve family functioning. This study provides a theoretical basis for establishing transitional care programs for adolescents with chronic illnesses. The significant mediating effect of coping style should be emphasized in modalities of healthcare that include patient participation.

Changes in cardinal ligament length and curvature with parity and prolapse and their relation to level III hiatus measures.

INTRODUCTION AND HYPOTHESIS: Test the hypotheses that (1) cardinal ligament (CL) straightening and lengthening occur with parity and prolapse, (2) CL straightening occurs before lengthening, and (3) CL length is correlated with level III measures. METHODS: We performed a secondary analysis of MRIs from women in three groups: (1) nulliparous with normal support, (2) parous with normal support, and (3) uterine prolapse (POP-Q point C > - 4 and Ba > 1 cm). The 3D stress MRI images at rest and maximal Valsalva were analyzed. CLs were traced from their origin to cervico-vaginal insertions. Curvature ratio was calculated as curved length/straight length. Level III measures included urogenital hiatus (UGH), levator hiatus (LH), and levator bowl volume (LBV), and their correlations with CL length were calculated. RESULTS: Ten women were included in each group. Compared to the nulliparous group, CL length was 18% longer in parous controls (p = .04) and 59% longer with prolapse (p < .01) at rest, while at Valsalva, CL length was 10% longer in parous controls (p = .21) and 49% longer with prolapse (p < .01). Curvature ratios showed 18% more straightening in women with prolapse compared to parous controls (p < .01). Curved CL length and level III measures were moderately to strongly correlated: UGH (rest: R = 0.68, p < .01; Valsalva: R =0.80, p < .01), LH (rest: R = 0.60, p < .01; Valsalva: R = 0.78, p < .01), and LBV (rest: R = 0.71, p < .01; Valsalva: R =0.89, p < .01). CONCLUSION: Our findings suggest that the CLs undergo three times as much lengthening with prolapse as with parity; however, straightening only occurs with prolapse. Strong correlations exist between level I and level III support.

Mechanisms of hiatus failure in prolapse: a multifaceted evaluation.

INTRODUCTION AND HYPOTHESIS: We investigated whether factors influencing pelvic floor hiatal closure are inter-related or independent, hypothesizing that (1) hiatus size is moderately correlated with levator defect, pelvic floor muscle strength, and change in hiatus size with contraction and (2) urogenital hiatus (UGH) and levator hiatus (LH) measures are similar in patients with anterior wall (AW) and posterior wall (PW) prolapse. METHODS: This cross-sectional case-control study included subjects with AW prolapse (n = 50), PW prolapse (n = 50), and normal support (n = 50). Hiatus measurements and levator defects were assessed on MRI, and vaginal closure force was measured with an instrumented speculum. Pearson correlation coefficients and simple and multivariable linear regression models were performed. RESULTS: During contraction, LH narrowed 47% more in the PW compared to AW group (p = 0.001). With straining, LH lengthened 34% more in the PW than AW group (p < 0.001). With straining, UGH and LH lengthening was greater by 72% and 44% in those with major compared to no/minor defect (p < 0.001 and p = 0.004). Contraction strength explained, at most, 4% of UGH (r = 0.17) or LH (r = 0.20) shortening during contraction (r = 0.17 and r = 0.20, respectively), indicating that these factors are largely independent. After controlling for prolapse size, resting UGH and levator defect status were associated with straining UGH (p < 0.001, p = 0.004), but muscle strength and resting tone were not. CONCLUSIONS: Hiatus measures are complex and differ according to prolapse occurrence and type. They are, at best, only weakly correlated with pelvic floor muscle strength and movement during contraction.

Participation in healthcare behavior by adolescents with epilepsy and factors that influence it during the transition period: A cross-sectional study in China.

PURPOSE: Given the importance of adolescents' participation in the care of their chronic diseases during their transitional period in the healthcare system, the present study investigated the degree of participation in healthcare behavior by Chinese adolescents with chronic epilepsy and identified factors that should be addressed by health interventions. METHODS: The study used a convenience sample of 1238 adolescent patients with epilepsy, who were hospitalized in 17 tertiary A-level children or maternal and child specialty hospitals in China between January 2017 and March 2020. Several scales were used to measure their degree of participation in healthcare behavior and the factors that influence it. Data collection was conducted after uniform training of the investigators. The adolescents who met the inclusion and exclusion criteria could scan the QR code of the questionnaire via a mobile phone. RESULTS: The age of the participants ranged from 12.2 to 17.8 years (mean 14.2 years), and the sample had a male-to-female ratio of 1.25:1. The patients' average total score of participation in healthcare behavior was 125.58 (SD = 12.25), which was lower than the norm for China. Their scores on the six dimensions of participation were highest for information interaction, followed in descending order by medical decision-making, treatment and care, appeal, diagnosis and treatment decision-making, and questioning supervision. Multiple linear regression found significant associations between health-care participation and five personal and disease variables (gender, age, course of disease, number of comorbid diseases, type of family structure), self-efficacy, and coping styles (cognitive-palliative and acceptance), which explained 52.1% of the variance in patients' total scores on participating in healthcare behavior. CONCLUSIONS: The participation of young Chinese patients with epilepsy in transitional healthcare behavior needs to be improved. Participation was positively associated with being female, a longer course of disease, fewer comorbidities, and living in a nuclear family. Patients who used cognitive-palliative and acceptance coping styles and those who had higher self-efficacy also had significantly higher levels of participation in healthcare behavior. The study provides useful reference points for adolescents with chronic disease to participate in healthcare programs, in order to achieve a smooth transition from childhood to adulthood.

ß-arrestin-2 up-regulates toll-like receptor 2 signaling and inhibits apoptosis in human endometrial cancer heterotransplants in nude mice.

BACKGROUND: ß-arrestin-2(Arr2) functions as an anti-apoptotic factor and affects cell proliferation, but its downstream molecular pathway in endometrial carcinoma (EC) is still unclear. This study aimed to investigate the effects of the stable overexpression of Arr2 on the proliferation and apoptosis of human EC heterotransplants and the expression of associated molecules, including Toll-like receptor 2(TLR2), serine-threonine kinase Akt (Akt), glycogen synthase kinase-3ß(GSK3ß) and some typical inflammatory cytokines such as NF-κB p56, TNF-α and IL-6 & IL-8. METHODS: Human EC cell line Ishikawa, stably transfected with Arr2 full-length plasmid, was injected subcutaneously into nude mice. They were treated with 0, 10, 20 mg/kg paclitaxel and the volume and weight of the tumor tissue were measured and calculated. The necrotic index were assessed by H&E staining and microscopic observation. The levels of caspase-3, caspase-9, TLR2, NF-κB p56, Akt, GSK3ß were measured by western blot, and the levels of TNF-α, IL-6, IL-8 were measured by real-time PCR. RESULTS: We found that Arr2 overexpression promoted the growth of human EC heterotransplants. Arr2 attenuated the promotion of caspase-3 and caspase-9 by paclitaxel and mediated the increase of TLR2 and several inflammatory cytokines. The levels of Akt and GSK3ß were not affected. CONCLUSION: Arr2 overexpression was associated with the increase of TLR2 and several inflammatory factors, meanwhile inhibited paclitaxel-induced anti-tumor effect on human EC heterotransplants.

Health Assessment of Chinese Adolescents with Epilepsy in the Preparatory Phase of Transition Process from Pediatric to Adulthood:A Single-Center Study Using the Omaha System.

OBJECTIVE: Epilepsy is one of the most common childhood-onset neurological disorder characterized by both seizures and the related comorbidities. The preparatory phase in transition refers to a dynamic process of identifying and resolving health issues to ensure seamless continuing care from childhood to adulthood. This study identifies the health issues of the preparatory phase in transition from children to adulthood using the Omaha System. METHODS: This prospective, single-center study enrolled 86 adolescents with epilepsy in China. The Problem Classification Scheme and Problem Rating Scale for Outcomes of Omaha System were used to evaluate transition-induced health problems. RESULTS: These health problems cover all four domains of the problem classification scheme of the Omaha System, and the specific distribution is related to the type of epilepsy. The results of the four-category classification evaluation showed that the most common health problem is health-related behavioral problems (46.1%), followed by psychosocial problems (23.0%), physiological problems (20.6%), and environmental problems (10.3%). The distribution of these health problems in generalized seizures, focal seizures, and generalized-focal seizures are significantly different (P < 0.01). The results of the outcome rating scale showed that 83.4% of the children had minimal knowledge, 84.2% had inconsistently appropriate behaviors, and 86.7% had moderate symptoms. CONCLUSIONS: The health problems of patients with epilepsy during the preparatory phase of transition process from pediatric to adulthood should be emphasized. Identification of health problems though the Omaha System can improve management for adolescents with epilepsy, including prevention, nursing care, social support, and therapeutic interventions.

Pilot in vitro and in vivo study on a mouse model to evaluate the safety of transcutaneous low-frequency electrical nerve stimulation on cervical cancer patients.

INTRODUCTION AND HYPOTHESIS: To clarify whether the pulse electrical field (PEF) caused by transcutaneous low-frequency nerve electrical stimulation (TENS) enhances the proliferation of cervical cancer cells, leading to recurrence and metastasis, and the effect of such a PEF on a cervical cancer mouse model. METHODS: 1. In vitro experiment: SiHa cervical cancer cells treated with one session of microsecond PEFs for 30 min were divided into four groups: three experimental groups and the control group. Cell proliferation and migration were determined by CCK-8 proliferation and Transwell chamber Matrigel migration assay. 2. In vivo experiment: A mouse cancer model was established by subcutaneous implantation of SiHa cells that were then were randomly divided into the TENS group and control group. The former group received one session of TENS treatment and the control group received a sham pulse. The growth trend and tumor volume of each group were compared 28 days after PEF treatment. The proliferation and apoptosis of the tumor were determined by an immunohistochemical method. RESULTS: (1) The CCK-8 proliferation assay and cell migration ability showed no difference after PEF stimulation treatment (F = 2.478, P = 0.136 > 0.05 and F = 0.364, P = 0.779). (2) Tumor growth, size and weight showed no significant difference between the two groups. (3) Expression of VEGF, CD34, caspase-3 and Ki-67 in the tumor tissue showed no significant difference between the two groups. CONCLUSIONS: In vitro and in vivo experiments (mice) showed that the PEF created by TENS had no effect on the proliferation and migration of SiHa cervical cancer cells and also had no effect on the tumor growth, tumor cell apoptosis and proliferation.

Perioperative hemorrhagic complications in pelvic floor reconstructive surgery.

INTRODUCTION AND HYPOTHESIS: We sought to assess the incidence, symptoms, and risk factors of perioperative hemorrhagic complications in patients undergoing pelvic floor reconstructive surgery. METHODS: This is a retrospective study on 694 consecutive patients who underwent pelvic floor reconstructive surgery with or without using mesh in our hospital over a 3-year period. RESULTS: We identified 694 pelvic floor reconstructive procedures from 2014 to 2016, including complete/incomplete colpocleisis (176, 25.4%), sacral colpopexy/hysteropexy with mesh (140, 20.1%), colporrhaphy (77, 11.1%) or vaginal mesh repair (99, 43.1%). Two patients who received only sacrospinous ligament suspension were excluded. There were 68 (9.8%) and 3 (0.1%) patients whose blood loss reached 200 and 500 ml respectively. Procedures involving mesh and vaginal hysterectomy (VH) caused more intraoperative blood loss. Postoperative hemoglobin drop was least in colpocleisis (p < 0.05). All 6 of the patients (0.9%) who developed postoperative pelvic hematoma underwent concomitant VH, and 5 of them received mesh. CONCLUSIONS: Hemorrhagic complications during or after pelvic floor reconstructive surgery are rare. Mesh use and concomitant VH are two major surgical risk factors for hemorrhagic complications in pelvic floor reconstructive surgery.

Correction: Selective precipitation of alkyl dihalides using a newly synthesized water-soluble bisphosphorylpillar[5]arene.

Correction for 'Selective precipitation of alkyl dihalides using a newly synthesized water-soluble bisphosphorylpillar[5]arene' by Wenjin Cheng et al., Chem. Commun., 2016, 52, 8075-8078.

Selective precipitation of alkyl dihalides using a newly synthesized water-soluble bisphosphorylpillar[5]arene.

Bisphosphorylpillar[5]arenes ( and ) were synthesized and used to study the host-guest complexation in organic solvents and water. The interactions between the guests and the phosphate of the hosts lead to strong binding towards alkyl dihalides and alkyldiammonium ions. may be used to detect or separate alkyl dihalides in water due to the rapid precipitation of the complex.