RESUMO
Entheses transmit force from tendons and ligaments to the skeleton. Regional organization of enthesis extracellular matrix (ECM) generates differences in stiffness required for force transmission. Two key transcription factors co-expressed in entheseal tenocytes, scleraxis (Scx) and Sox9, directly control production of enthesis ECM components. Formation of embryonic craniofacial entheses in zebrafish coincides with onset of jaw movements, possibly in response to the force of muscle contraction. We show dynamic changes in scxa and sox9a mRNA levels in subsets of entheseal tenocytes that correlate with their roles in force transmission. We also show that transcription of a direct target of Scxa, Col1a, in enthesis ECM is regulated by the ratio of scxa to sox9a expression. Eliminating muscle contraction by paralyzing embryos during early stages of musculoskeletal differentiation alters relative levels of scxa and sox9a in entheses, primarily owing to increased sox9a expression. Force-dependent TGF-ß (TGFß) signaling is required to maintain this balance of scxa and sox9a expression. Thus, force from muscle contraction helps establish a balance of transcription factor expression that controls specialized ECM organization at the tendon enthesis and its ability to transmit force.
Assuntos
Tendões , Peixe-Zebra , Animais , Peixe-Zebra/genética , Tendões/metabolismo , Osso e Ossos , Transdução de Sinais , LigamentosRESUMO
Although mesenchymal stromal cell (MSC) based therapies hold promise in regenerative medicine, their clinical application remains challenging due to issues such as immunocompatibility. MSC-derived exosomes are a promising off-the-shelf therapy for promoting wound healing in a cell-free manner. However, the potential to customize the content of MSC-exosomes, and understanding how such modifications influence exosome effects on tissue regeneration remain underexplored. In this study, we used an in vitro system to compare the priming of human MSCs by 2 inflammatory inducers TNF-α and CRX-527 (a highly potent synthetic TLR4 agonist that can be used as a vaccine adjuvant or to induce anti-tumor immunity) on exosome molecular cargo, as well as on an in vivo rat ligament injury model to validate exosome potency. Different microenvironmental stimuli used to prime MSCs in vitro affected their exosomal microRNAs and mRNAs, influencing ligament healing. Exosomes derived from untreated MSCs significantly enhance the mechanical properties of healing ligaments, in contrast to those obtained from MSCs primed with inflammation-inducers, which not only fail to provide any improvement but also potentially deteriorate the mechanical properties. Additionally, a link was identified between altered exosomal microRNA levels and expression changes in microRNA targets in ligaments. These findings elucidate the nuanced interplay between MSCs, their exosomes, and tissue regeneration.
Assuntos
Exossomos , Ligamentos , Células-Tronco Mesenquimais , Cicatrização , Células-Tronco Mesenquimais/metabolismo , Exossomos/metabolismo , Humanos , Animais , Ratos , Cicatrização/efeitos dos fármacos , Ligamentos/metabolismo , Ligamentos/lesões , Microambiente Celular , MicroRNAs/genética , MicroRNAs/metabolismo , Ratos Sprague-Dawley , MasculinoRESUMO
Tendons and ligaments are fibrous connective tissues vital to the transmission of force and stabilization of the musculoskeletal system. Arising in precise regions of the embryo, tendons and ligaments share many properties and little is known about the molecular differences that differentiate them. Recent studies have revealed heterogeneity and plasticity within tendon and ligament cells, raising questions regarding the developmental mechanisms regulating tendon and ligament identity. Here, we discuss recent findings that contribute to our understanding of the mechanisms that establish and maintain tendon progenitors and their differentiated progeny in the head, trunk and limb. We also review the extent to which these findings are specific to certain anatomical regions and model organisms, and indicate which findings similarly apply to ligaments. Finally, we address current research regarding the cellular lineages that contribute to tendon and ligament repair, and to what extent their regulation is conserved within tendon and ligament development.
Assuntos
Diferenciação Celular , Ligamentos/embriologia , Desenvolvimento Musculoesquelético , Células-Tronco/metabolismo , Tendões/embriologia , Animais , Humanos , Ligamentos/citologia , Células-Tronco/citologia , Tendões/citologiaRESUMO
BACKGROUND: Laparoscopic hepatectomy (LH) with oncological R0 resection combined with systemic therapy offers the best chance of cure for colorectal liver metastasis. However, tumors in vicinity of major hepatic veins require complex technique. Parenchyma-sparing resection with involved vein resection and peritoneal patch reconstruction could be an efficacious alternative to preserve liver volume for adjuvant chemotherapy and avoid venous congestion of the remnant liver.1,2 METHODS: A 64-year-old female, with history of colon cancer, had new diagnosis of liver metastatic tumor of S8 (2.8 cm), which was considering encroached on middle hepatic vein (MHV) with distal part patent. Thus margin-negative, parenchyma-sparing liver resection with involved vein resection and proximal MHV reconstruction was indicated for oncological radicality. RESULTS: With the patient in modified French position, we dissected falciform ligament and right coronary ligament to expose the crypt between right hepatic vein (RHV) and MHV. Intraoperative ultrasound localized the tumor and resection margin. Parenchymal dissection was performed caudally to cranially, left to right, to ligate dorsal branch of G8 (G8d) and V8 and expose main trunk of MHV. The involved side-wall of MHV was incised after the proximal and distal parts clamped. Peritoneal patch was harvested from falciform ligament to repair MHV side-wall before clamps released. The patient had an uneventful recovery and remained disease-free at 1 year postoperatively with patency of distal MHV by image. CONCLUSIONS: LH with MHV reconstruction by falciform ligament for metastatic lesion is technically demanding but feasible with oncological radicality and volume preservation for adjuvant chemotherapy.
Assuntos
Neoplasias do Colo , Laparoscopia , Neoplasias Hepáticas , Feminino , Humanos , Pessoa de Meia-Idade , Veias Hepáticas/cirurgia , Hepatectomia/métodos , Neoplasias Hepáticas/cirurgia , Neoplasias do Colo/patologia , Laparoscopia/métodos , Ligamentos/patologiaRESUMO
PURPOSE: To determine if symptom relief with celiac plexus block (CPB) is associated with favorable clinical outcomes after median arcuate ligament release (MALR) surgery. MATERIALS AND METHODS: A retrospective review was performed from January 2000 to December 2021. Fifty-seven patients (42 women, 15 men; mean age, 43 years [range, 18-84 years]) with clinical and radiographic features suggestive of median arcuate ligament syndrome (MALS) underwent computed tomography (CT)-guided percutaneous CPB for suspected MALS. Clinical outcomes of CPB and MALR surgery were correlated. Adverse events were classified according to the Society of Interventional Radiology (SIR) guidelines. RESULTS: CT-guided percutaneous CPB was successfully performed in all 57 (100%) patients with suspected MALS. A cohort of 38 (67%) patients showed clinical improvement with CPB. A subset of 28 (74%) patients in this group subsequently underwent open MALR surgery; 27 (96%) responders to CPB showed favorable clinical outcomes with surgery. There was 1 (4%) CPB-related mild adverse event. There were no moderate, severe, or life-threatening adverse events. CONCLUSIONS: Patients who responded to CPB were selected to undergo surgery, and 96% of them improved after surgery.
Assuntos
Plexo Celíaco , Síndrome do Ligamento Arqueado Mediano , Masculino , Humanos , Feminino , Adulto , Artéria Celíaca/diagnóstico por imagem , Artéria Celíaca/cirurgia , Plexo Celíaco/diagnóstico por imagem , Plexo Celíaco/cirurgia , Descompressão Cirúrgica/efeitos adversos , Síndrome do Ligamento Arqueado Mediano/diagnóstico por imagem , Síndrome do Ligamento Arqueado Mediano/cirurgia , Síndrome do Ligamento Arqueado Mediano/complicações , Ligamentos/diagnóstico por imagem , Ligamentos/cirurgiaRESUMO
INTRODUCTION: The pathogenesis of pelvic organ prolapse (POP), an age-related disease, has not been fully elucidated. Therapeutic targets of POP are limited. Silencing information regulator 2 related enzyme 1 (SIRT1), a gene considered capable of regulating oxidative stress and cellular senescence, has been widely demonstrated involved in aging and age-related diseases. The present study aimed to explore the role of SIRT1 in POP in vivo and in vitro. METHODS: Expression levels of SIRT1 in uterosacral ligament (USL) tissues from patients with or without POP were measured using immunohistochemical assays. SRT1720, a SIRT1 agonist, was used to upregulate SIRT1, and hydrogen peroxide (H2O2) was used to establish an oxidative stress model in human uterosacral ligament fibroblasts (hUSLFs). The effects of SIRT1 on cell viability, apoptosis, senescence, and reactive oxygen species (ROS) levels were detected, respectively. Western blot assays were used to examine expression levels of apoptosis- and senescence-associated biomarkers. Unpaired Student's t test, Mann-Whitney U test, χ2 test, and one-way ANOVA were performed for determining statistically significant differences. RESULTS: Compared to the control group, expression levels of SIRT1 were downregulated in USL tissues and hUSLFs from patients with POP, and associated with stage (p < 0.05). hUSLFs of patients with POP had lower growth rates (p < 0.0001) than those of the control group, which were improved by upregulating SIRT1 (p < 0.05). The senescent proportion was higher in the POP group than the control group (43.63 ± 10.62% vs. 4.84 ± 5.32%, p < 0.0001), which could be reduced by upregulating SIRT1 (p < 0.0001). High ROS levels in the POP group were also alleviated by SRT1720. H2O2 exposure increased ROS levels, inhibited proliferation, and triggered apoptosis and senescence in hUSLFs of patients without POP in a concentration-dependent manner. Further, these damages were alleviated by pretreatment with SRT1720. CONCLUSIONS: SIRT1 is downregulated in patients with POP, and the development of SIRT1 activators or agonists may have applications in the treatment and prevention of POP through antioxidative stress and antisenescence effects.
Assuntos
Apoptose , Senescência Celular , Fibroblastos , Ligamentos , Estresse Oxidativo , Prolapso de Órgão Pélvico , Espécies Reativas de Oxigênio , Sirtuína 1 , Humanos , Sirtuína 1/metabolismo , Estresse Oxidativo/efeitos dos fármacos , Senescência Celular/efeitos dos fármacos , Feminino , Ligamentos/efeitos dos fármacos , Ligamentos/metabolismo , Ligamentos/patologia , Fibroblastos/efeitos dos fármacos , Fibroblastos/metabolismo , Fibroblastos/patologia , Prolapso de Órgão Pélvico/metabolismo , Prolapso de Órgão Pélvico/patologia , Apoptose/efeitos dos fármacos , Pessoa de Meia-Idade , Espécies Reativas de Oxigênio/metabolismo , Células Cultivadas , Peróxido de Hidrogênio/farmacologia , Compostos Heterocíclicos de 4 ou mais Anéis/farmacologia , Sobrevivência Celular/efeitos dos fármacos , Idoso , Sacro/efeitos dos fármacos , Sacro/patologia , Adulto , Útero/efeitos dos fármacos , Útero/metabolismo , Útero/patologiaRESUMO
Spontaneous tendon or ligament ruptures are quite rare and mostly associated with chronic systemic diseases such as diabetes mellitus, systemic lupus erythematosus, rheumatoid arthritis, and chronic kidney disease (CKD). In this study, we present the first documented case of a spontaneous rupture of the medial patellofemoral ligament (MPFL) in a pediatric patient. The patient was undergoing long-term peritoneal dialysis (PD) and had a history of severe secondary hyperparathyroidism. Additionally, we discussed spontaneous tendon and ligament ruptures associated with CKD or dialysis through a comprehensive literature review. This case report highlights the importance of recognizing that spontaneous tendon or ligament injuries are not exclusive to adults; children with CKD can also be affected. Several factors including poor parathyroid hormone (PTH) and metabolic acidosis control, prolonged CKD duration and presence of malnutrition play role in the pathogenesis. Early diagnosis is crucial as it allows for timely surgical intervention and leads to a favorable functional recovery.
Assuntos
Doenças Musculares , Insuficiência Renal Crônica , Traumatismos dos Tendões , Criança , Humanos , Ligamentos/patologia , Doenças Musculares/etiologia , Diálise Renal/efeitos adversos , Insuficiência Renal Crônica/complicações , Traumatismos dos Tendões/diagnóstico , Traumatismos dos Tendões/etiologia , Traumatismos dos Tendões/terapia , Tendões/patologiaRESUMO
OBJECTIVE: To determine the diagnostic test accuracy of transvaginal ultrasound (TVS) using a standardized technique for the diagnosis of deep endometriosis (DE) of the uterosacral ligaments (USLs) and adjacent torus uterinus (TU). METHODS: This was a prospective diagnostic test accuracy study conducted at the McMaster University Medical Center Tertiary Endometriosis Clinic, Hamilton, ON, Canada. Consecutive participants were enrolled if they successfully underwent TVS and surgery by our team from 10 August 2020 to 31 October 2021. The index test was TVS using a standardized posterior approach performed and interpreted by an expert sonologist. The reference standard included direct surgical visualization on laparoscopy by the same person who performed and interpreted the ultrasound scans. Accuracy, sensitivity, specificity, positive and negative predictive values (PPV and NPV) and positive and negative likelihood ratios were calculated for the TVS posterior approach for each location using the reference standard. RESULTS: There were 54 consecutive participants included upon completion of laparoscopy and histological assessment. The prevalence of DE for the left USL, right USL and TU was 42.6%, 22.2% and 14.8%, respectively. Based on surgical visualization as the reference standard, TVS demonstrated an accuracy of 92.6% (95% CI, 82.1-97.9%), sensitivity of 82.6% (95% CI, 61.2-95.1%), specificity of 100% (95% CI, 88.8-100%), PPV of 100% and NPV of 88.6% (95% CI, 76.1-95.0%) for diagnosing DE in the left USL. For DE of the right USL, TVS demonstrated an accuracy of 94.4% (95% CI, 84.6-98.8%), sensitivity of 75.0% (95% CI, 42.8-94.5%), specificity of 100% (95% CI, 91.6-100%), PPV of 100% and NPV of 93.3% (95% CI, 84.0-97.4%). For DE of the TU, TVS demonstrated an accuracy of 100% (95% CI, 93.4-100%), sensitivity of 100% (95% CI, 63.1-100%), specificity of 100% (95% CI, 92.3-100%), PPV of 100% and NPV of 100%. CONCLUSIONS: We observed high diagnostic test accuracy of the evaluated standardized TVS technique for assessing DE of the USLs and TU. Further studies evaluating this technique should be performed, particularly with less experienced observers, before considering this technique as the standard approach. © 2023 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.
Assuntos
Endometriose , Vagina , Feminino , Gravidez , Humanos , Vagina/diagnóstico por imagem , Vagina/patologia , Endometriose/diagnóstico por imagem , Endometriose/cirurgia , Sensibilidade e Especificidade , Estudos Prospectivos , Ultrassonografia/métodos , Ligamentos/diagnóstico por imagem , Ligamentos/patologia , Testes Diagnósticos de RotinaRESUMO
INTRODUCTION AND HYPOTHESIS: The objective was to explore the association between urge urinary incontinence (UUI) and lax uterosacral ligaments (USL) using MRI. METHODS: Sixty-seven female participants were recruited prospectively: 41 continent volunteers (control group) and 26 patients with UUI. Static proton density- and T2-weighted turbo spin echo sequences of MR images were used. A radiologist employed a standardized grid system to record structural observations of the USLs on sequentially numbered axial MR images and then applied a four-point grading scale to assess ligament visibility. MR images were interpreted by a radiologist and a urologist, and then validated by an expert radiologist. RESULTS: The comparison between the mean length of uterosacral ligaments in the control and UUI groups was highly statistically significant (p < 0.001). The mean length of the right USL was 38 ± 11 mm, and the left USL was 35 ± 12 mm in the UUI group. In the control group, the mean length of the USL was 22 ± 9 mm on the right side and 18 ± 9 mm on the left side, along their craniocaudal extent. The highest inter-observer agreement was on the level of origin and insertion (image numbers), whereas the lowest agreement was on the anatomical site of origin and insertion of the USL in both the control and UUI groups. CONCLUSIONS: The average length of USLs in patients with UUI is significantly longer than that in healthy continent women, indicating laxity. Our findings support the relationship between the laxity of the USL and UUI symptoms and have therapeutic implications.
Assuntos
Ligamentos , Imageamento por Ressonância Magnética , Incontinência Urinária de Urgência , Humanos , Feminino , Pessoa de Meia-Idade , Ligamentos/diagnóstico por imagem , Ligamentos/patologia , Adulto , Incontinência Urinária de Urgência/diagnóstico por imagem , Estudos Prospectivos , Estudos de Casos e Controles , Idoso , Útero/diagnóstico por imagem , Voluntários Saudáveis , Sacro/diagnóstico por imagemRESUMO
INTRODUCTION AND HYPOTHESIS: We aimed to demonstrate the feasibility of ureteral navigation using intra-ureteric indocyanine green (ICG) and near-infrared fluorescence (NIRF) imaging during transvaginal high uterosacral ligament suspension for prolapse repair to reduce the risk of iatrogenic ureteral injury. METHODS: A cystoscope was inserted into the bladder, the tip of a 6-F open-end ureteral catheter was inserted into the ureteral orifices, and ICG was instilled into the ureters. The ureteral path was then clearly identified using NIRF imaging. Sutures were safely placed in the uterosacral ligaments at the level of the ischial spine, taking advantage of direct ureteral visualization. RESULTS: At the end of the procedure, diagnostic cystoscopy was performed to confirm ureteral patency. No intraoperative or postoperative complications were observed. CONCLUSIONS: Intra-ureteric ICG-NIRF imaging represents a simple, inexpensive, and reproducible trick for intraoperative ureteral detection, and could reassure surgeons during difficult operations, for instance, in the case of severe prolapse and/or when ureteral course abnormalities are expected.
Assuntos
Verde de Indocianina , Ligamentos , Prolapso de Órgão Pélvico , Ureter , Feminino , Humanos , Ureter/diagnóstico por imagem , Prolapso de Órgão Pélvico/cirurgia , Ligamentos/diagnóstico por imagem , Ligamentos/cirurgia , Imagem Óptica/métodos , Cistoscopia/métodos , Estudos de Viabilidade , Procedimentos Cirúrgicos em Ginecologia/métodos , Pessoa de Meia-IdadeRESUMO
INTRODUCTION AND HYPOTHESIS: The objective was to determine whether the addition of uterosacral ligament plication to pectopexy for pelvic organ prolapse increases anatomical improvement and female sexual functioning. METHODS: This is a prospective randomised study. Forty patients who underwent laparoscopic pectopexy (LP) and laparoscopic pectopexy with uterosacral ligament plication (LPUSL) were included in the study. A total of 38 patients were evaluated in the study. Patients were assessed by the Pelvic Organ Prolapse Quantification (POP-Q) system and the patients who had symptomatic apical prolapse POP-Q ≥ II were included in the study. Patients were evaluated preoperatively and postoperatively at the 3rd, 6th and 12th month, with respect to anatomical changes as well as sexual function. RESULTS: A statistically significant difference was found when the preoperative C points was compared with the C points postoperatively, at 3rd, 6th and 12th months in both the LP and LPUSL groups (p < 0.001). Additionally, there were statistically significant difference between the LP and LPUSL groups in terms of C and Aa points at the 6th and 12th postoperative months in favour of the LPUSL group (p = 0.007, p = 0.005 respectively). There was also a statistically significant difference when Ba points were compared between the two groups at the 12th postoperative month, in favour of the LPUSL group (p = 0.002). There were no statistically significant differences between the groups with respect to the variables of the Female Sexual Function Index. Additionally, all parameters were significantly better in both groups at the 3rd and 12th months than the preoperative values in post hoc analysis; only desire also had a significant improvement between the 3rd and 12th months in the LPUSL group in post hoc analysis. CONCLUSION: Pectopexy operation seems to be a successful surgical approach as an alternative to sacrocolpopexy. The addition of uterosacral ligament plication to pectopexy operation improves the anatomical restoration more drastically than with LP on its own. Moreover, either LP or LPUSL has improved the majority of sexual function indices.
Assuntos
Procedimentos Cirúrgicos em Ginecologia , Ligamentos , Prolapso de Órgão Pélvico , Humanos , Feminino , Pessoa de Meia-Idade , Ligamentos/cirurgia , Prolapso de Órgão Pélvico/cirurgia , Estudos Prospectivos , Procedimentos Cirúrgicos em Ginecologia/métodos , Idoso , Laparoscopia/métodos , Resultado do Tratamento , Adulto , Útero/cirurgiaRESUMO
INTRODUCTION: The Manchester procedure (MP) and sacrospinous ligament hysteropexy (SSHP) have long been established as effective conservative surgeries for treating uterine prolapse. However, there have been limited studies on outcomes comparing these two techniques. METHODOLOGY: This was a prospective cohort study of the British Society of Urogynaecology database between February 2007 and 2023 of MP and SSHP outcomes from 90 centres in the UK. The primary outcome was the Patient Global Impression of Improvement (PGI-I). The other outcomes compared were the absence of pelvic organ prolapse beyond the hymen in any compartment evaluated by the Pelvic Organ Prolapse Quantification (POP-Q), complications, and the incidence of reported symptomatic prolapse within 1 year after the operation. RESULTS: There were 718 women who underwent MP and 2,384 who had SSHP. The PGI-I score was significantly better in the MP group (p value <0.001). The rates of symptomatic prolapse within 1 year (odds ratio [OR] 0.36, 95% confidence interval [CI] 0.18-0.69; p value 0.001), recurrence of prolapse beyond the hymen (OR 0.13, 95% CI 0.03-0.53; p value 0.001) and apical recurrence (OR 0.09, 95% CI 0.01-0.65; p value 0.003) during follow-up examination were lower in the MP group. The combined peri-operative and post-operative complications reported in both groups were comparatively similar. CONCLUSION: The symptom improvement was better and recurrence was lower with the MP than with SSHP at short-term follow-up.
Assuntos
Procedimentos Cirúrgicos em Ginecologia , Ligamentos , Prolapso Uterino , Feminino , Humanos , Prolapso Uterino/cirurgia , Pessoa de Meia-Idade , Idoso , Procedimentos Cirúrgicos em Ginecologia/métodos , Procedimentos Cirúrgicos em Ginecologia/estatística & dados numéricos , Estudos Prospectivos , Reino Unido/epidemiologia , Ligamentos/cirurgia , Resultado do Tratamento , Bases de Dados Factuais , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Sociedades Médicas , RecidivaRESUMO
INTRODUCTION AND HYPOTHESIS: Ureteral injuries are the most feared complications of gynecological surgery and therefore intraoperative recognition is of the utmost importance. Intraoperative cystoscopy represents the diagnostics of choice to investigate ureteral patency thanks to the direct visualization of ureteral flows after administration of infusion mediums. In this study, we aimed to compare the diagnostic performance of saline versus mannitol intraoperative cystoscopy in terms of false negatives in a large cohort of patients. METHODS: We retrospectively analyzed data of patients who underwent vaginal hysterectomy and high uterosacral ligament suspension for POP. Patients were divided in two groups based on the use of saline or mannitol medium for intraoperative cystoscopy. Postoperative daily control of serum creatinine was performed until discharge, as well as urinary tract imaging, in symptomatic patients. RESULTS: A total of 925 patients underwent vaginal hysterectomy followed by high USL suspension for POP. Saline and mannitol medium were used in 545 patients and 380 patients respectively. Postoperative ureteral injuries were identified in 12 patients, specifically in 2% of the saline group and in 0.3% of the mannitol group. CONCLUSIONS: The use of mannitol instead of saline as a bladder distension medium was able to significantly reduce the occurrence of postoperative ureteral sequelae.
Assuntos
Prolapso de Órgão Pélvico , Retenção Urinária , Doenças Urológicas , Feminino , Humanos , Bexiga Urinária , Prolapso de Órgão Pélvico/cirurgia , Estudos Retrospectivos , Diafragma da Pelve/cirurgia , Manitol , Histerectomia Vaginal/métodos , Procedimentos Cirúrgicos em Ginecologia/métodos , Retenção Urinária/cirurgia , Ligamentos/cirurgiaRESUMO
INTRODUCTION AND HYPOTHESIS: The objective was to investigate the correlation between endogenous vaginal microecological alterations and female pelvic organ prolapse (POP). METHODS: Patients who underwent vaginal hysterectomy were retrospectively analyzed as the POP group (n = 30) and the non-POP group (n = 30). The vaginal microbial metabolites and enzyme levels were tested using the dry chemoenzymatic method. The mRNA and protein expression were tested using real-time quantitative PCR and immunohistochemistry. SPSS version 25.0 and GraphPad Prism 8.0 were performed for statistical analysis. RESULTS: Compared with the non-POP group, the vaginal pH, H2O2 positivity and leukocyte esterase positivity were higher in patients with POP (all p < 0.05). Further analysis showed that patients with pelvic organ prolapse quantification (POP-Q) stage IV had higher rates of vaginal pH, H2O2 positivity and leukocyte esterase positivity than those with POP-Q stage III. Additionally, the mRNA expression of decorin (DCN), transforming growth factor beta 1 (TGF-ß1), and matrix metalloproteinase-3 (MMP-3) in uterosacral ligament tissues were higher, whereas collagen I and III were lower. Similarly, the positive expression of MMP-3 in uterosacral ligament tissue was significantly upregulated in the POP group compared with the non-POP group (p = 0.035), whereas collagen I (p = 0.004) and collagen III (p = 0.019) in uterosacral ligament tissue were significantly downregulated in the POP group. Correlation analysis revealed that there was a significant correlation between vaginal microecology and collagen metabolism. In addition, MMP-3 correlated negatively with collagen I and collagen III (p = 0.002, r = -0.533; p = 0.002, r = -0.534 respectively), whereas collagen I correlated positively with collagen III (p = 0.001, r = 0.578). CONCLUSIONS: Vaginal microecological dysbiosis affects the occurrence of female POP, which could be considered a novel therapeutic option.
Assuntos
Prolapso de Órgão Pélvico , Vagina , Feminino , Humanos , Prolapso de Órgão Pélvico/metabolismo , Pessoa de Meia-Idade , Estudos Retrospectivos , Metaloproteinase 3 da Matriz/metabolismo , Decorina/metabolismo , Decorina/genética , Idoso , Fator de Crescimento Transformador beta1/metabolismo , Fator de Crescimento Transformador beta1/genética , Peróxido de Hidrogênio/metabolismo , Concentração de Íons de Hidrogênio , Histerectomia Vaginal , Colágeno Tipo I/metabolismo , Colágeno Tipo I/genética , Colágeno Tipo III/metabolismo , Colágeno Tipo III/genética , RNA Mensageiro/metabolismo , Ligamentos/metabolismo , Microbiota , AdultoRESUMO
Median arcuate ligament syndrome (MALS) is a rare disorder caused by the compression of the celiac axis by the fibrous structure of the diaphragm called the median arcuate ligament. Patients with MALS are usually undiagnosed unless characteristic symptoms such as nausea and vomiting, postprandial pain, and weight loss are presented. We report a case of a 29-year-old patient diagnosed with MALS and secondary antiphospholipid syndrome (APS) that developed celiac trunk, common hepatic artery and splenic artery thrombosis. There is not enough information on MALS as a trigger of thrombosis in predisposed patients such as those with APS. However, the case gives rise to suspicion and highlights the diagnostic processes, especially for patients with APS presenting postprandial abdominal pain and weight loss. This review likewise aims at the importance of Doppler ultrasonography as a screening tool and computer tomography (CT) or magnetic resonance (MR) both in the angiography variant, especially to diagnose confirmation and underlying treatment options.
Assuntos
Síndrome Antifosfolipídica , Síndrome do Ligamento Arqueado Mediano , Humanos , Adulto , Síndrome Antifosfolipídica/complicações , Síndrome Antifosfolipídica/diagnóstico , Diafragma , Constrição Patológica/diagnóstico por imagem , Constrição Patológica/etiologia , Síndrome do Ligamento Arqueado Mediano/complicações , Síndrome do Ligamento Arqueado Mediano/diagnóstico por imagem , Ligamentos , Redução de PesoRESUMO
OBJECTIVE: Uterosacral ligament suspension (USLS) is one of the most frequently used operations for the restoration of apical support in women with uterovaginal prolapse. However, existing studies are inconclusive as to whether and which surgical access route is superior. The aim of the present meta-analysis is tentatively to compare the efficiency and the postoperative complications of laparoscopic USLS (L-USLS) and vaginal USLS (V-USLS), highlighting that current evidence remains inconclusive regarding the superiority of either surgical access route. DATA SOURCES: We performed a systematic literature review of 5 major databases (Medline, Scopus, Google Scholar Cochrane Central Register of Controlled Trials and Clinicaltrials.gov) from inception till April 2023. METHODS OF STUDY SELECTION: No language restrictions were applied. All comparative studies that compared L-USLS and V-USLS for the management of women with uterovaginal prolapse were included. TABULATION, INTEGRATION, AND RESULTS: Data from 6 retrospective cohort studies on 856 patients were extracted and analyzed. The methodological quality of the included studies was assessed using the risk of bias in nonrandomized studies of interventions tool and ranged between moderate to serious. The pooled results suggest that L-USLS was associated with a potentially decreased incidence of ureteral compromise (odds ratio [OR], 0.19; 95% confidence interval [CI] 0.04-0.89; p = .04) and seemingly lower objective (OR 0.47; 95% CI 0.23-0.97; p = .04) and subjective recurrence rates (OR 0.46; 95% CI 0.23-0.92; p = .03). There were no significant differences between the rates of postoperative pain from USLS sutures, postoperative pelvic hematomas, the suture exposure/granulation tissue formation, and the prolapse recurrence retreatment among the 2 groups. CONCLUSION: The present meta-analysis indicates that L-USLS is possibly associated with significantly fewer ureteral compromise rates and decreased subjective and objective recurrences rates compared to V-USLS. Nevertheless, given the limitations in data quality and heterogeneity of the included studies, these findings should be interpreted with caution. Large-scale randomized studies are essential to more definitively determine the relative merits of the laparoscopic versus vaginal approach.
Assuntos
Laparoscopia , Ligamentos , Prolapso de Órgão Pélvico , Humanos , Feminino , Laparoscopia/métodos , Prolapso de Órgão Pélvico/cirurgia , Ligamentos/cirurgia , Vagina/cirurgia , Procedimentos Cirúrgicos em Ginecologia/métodos , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologiaRESUMO
STUDY OBJECTIVE: To investigate whether minimally invasive Sacrohysteropexy (SH) is non-inferior to vaginal hysterectomy (VH) with uterosacral ligament suspension (USLS) in women with symptomatic uterovaginal prolapse. DESIGN: Prospective, randomized, non-inferiority study. SETTING: Tertiary university-based hospital. PATIENTS: A total of 146 patients with uterovaginal prolapse between July 2016 and August 2019. INTERVENTIONS: Patients were randomly assigned in a 1:1 ratio to either laparoscopic or robotic SH surgery or VH with USLS surgery. MEASUREMENTS AND MAIN RESULTS: The primary outcome was prolapse recurrence at 1 year after surgery, defined as prolapse ≥ stage 2 evaluated using the pelvic organ prolapse quantification system, bothersome vaginal bulge symptoms, or retreatment for prolapse. The secondary outcomes included operation time, estimated blood loss, hospital stay, operation-related complications, pain intensity, quality of life, and activities of daily living. Of 146 women who underwent randomization, 73 in the SH group and 73 in the VH with USLS group were analyzed. SH was non-inferior for recurrence compared with VH with USLS (16.4% vs 15.8%, 95% confidence interval: -13.0% to 14.2%). Operating duration and transvaginal length were significantly longer in the SH group, while there were no significant differences in the estimated blood loss, length of hospital stay, or postoperative complication rates. Although perioperative pain intensity was greater from 1 week to 1 month in the SH group, the quality of life and activities of daily living did not differ between the groups throughout postoperative year 1. CONCLUSION: Laparoscopic or robotic SH was non-inferior to VH with USLS for the recurrence of pelvic organ prolapse at the 1-year follow-up.
Assuntos
Histerectomia Vaginal , Laparoscopia , Ligamentos , Prolapso de Órgão Pélvico , Humanos , Feminino , Histerectomia Vaginal/métodos , Prolapso de Órgão Pélvico/cirurgia , Pessoa de Meia-Idade , Estudos Prospectivos , Ligamentos/cirurgia , Idoso , Laparoscopia/métodos , Procedimentos Cirúrgicos Robóticos/métodos , Recidiva , Resultado do Tratamento , Duração da Cirurgia , Tempo de Internação , Qualidade de Vida , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Procedimentos Cirúrgicos Minimamente Invasivos/métodos , Perda Sanguínea CirúrgicaRESUMO
STUDY OBJECTIVE: To determine the long-term costs of hysterectomy with minimally invasive sacrocolpopexy (MISCP) versus uterosacral ligament suspension (USLS) for primary uterovaginal prolapse repair. DESIGN: A hospital-based decision analysis model was built using TreeAge Pro (TreeAge Software Inc, Williamstown, MA). Those with prolapse were modeled to undergo either vaginal hysterectomy with USLS or minimally invasive total hysterectomy with sacrocolpopexy (MISCP). We modeled the chance of complications of the index procedure, prolapse recurrence with the option for surgical retreatment, complications of the salvage procedure, and possible second prolapse recurrence. The primary outcome was cost of the surgical strategy. The proportion of patients living with prolapse after treatment was the secondary outcome. SETTING: Tertiary center for urogynecology. PATIENTS: Female patients undergoing surgical repair by the same team for primary uterovaginal prolapse. INTERVENTIONS: Comparison analysis of estimated long-term costs was performed. MEASUREMENTS AND MAIN RESULTS: Our primary outcome showed that a strategy of undergoing MISCP as the primary index procedure cost $19 935 and that undergoing USLS as the primary index procedure cost $15 457, a difference of $4478. Furthermore, 21.1% of women in the USLS group will be living with recurrent prolapse compared to 6.2% of MISCP patients. Switching from USLS to MISCP to minimize recurrence risk would cost $30 054 per case of prolapse prevented. Additionally, a surgeon would have to perform 6.7 cases by MISCP instead of USLS in order to prevent 1 patient from having recurrent prolapse. CONCLUSION: The higher initial costs of MISCP compared to USLS persist in the long term after factoring in recurrence and complication rates, though more patients who undergo USLS live with prolapse recurrence.
Assuntos
Procedimentos Cirúrgicos Minimamente Invasivos , Humanos , Feminino , Procedimentos Cirúrgicos Minimamente Invasivos/economia , Procedimentos Cirúrgicos Minimamente Invasivos/métodos , Prolapso Uterino/cirurgia , Prolapso Uterino/economia , Histerectomia Vaginal/economia , Histerectomia Vaginal/métodos , Vagina/cirurgia , Histerectomia/economia , Histerectomia/métodos , Sacro/cirurgia , Procedimentos Cirúrgicos em Ginecologia/economia , Procedimentos Cirúrgicos em Ginecologia/métodos , Recidiva , Pessoa de Meia-Idade , Prolapso de Órgão Pélvico/cirurgia , Prolapso de Órgão Pélvico/economia , Ligamentos/cirurgiaRESUMO
Soft tissues such as tendon and ligament undergo a combination of shear and tensile loading in vivo due to their boundary conditions at muscle and/or bone. Current experimental protocols are limited to pure tensile loading, biaxial loading, or simple shear, and thus may not fully characterize the mechanics of these tissues under physiological loading scenarios. Our objective was to create an experimental protocol to determine the shear modulus of fibrous tissues at different tensile loads. We assembled a four-actuator experimental system that facilitated shear deformation to be superimposed on a tissue subjected to an axial preload. We measured shear modulus in axially loaded electrospun nanofiber scaffolds with either randomly oriented or aligned fibers. We found that shear modulus in the nanofiber phantoms was shear-strain stiffening and dependent on both the axial load (p < 0.001) and fiber alignment (p < 0.001) of the scaffold. The proposed system can enhance our understanding of microstructure and functional mechanics in soft tissues, while also providing a platform to investigate the behavior of electrospun scaffolds for tissue regeneration. Our experimental protocol for determining loaded shear modulus would be further useful as a method to gauge tissue mechanics under loading conditions that are more representative of physiological loads applied to tendon and ligament.
Assuntos
Nanofibras , Tendões , Osso e Ossos , Ligamentos , Nanofibras/químicaRESUMO
PURPOSE: This study aims to delineate the three-dimensional (3D) SPACE MRI findings of the transverse ligament (TL) in whiplash-associated disorder (WAD) patients, and to compare them with those from a nontraumatic group. METHODS: A retrospective analysis was performed on cervical spine MRI scans obtained from 46 patients with WAD and 62 nontraumatic individuals. Clinical features, including the WAD grade and stage, were recorded. The TL's morphological grade and the symmetricity of the lateral atlantodental interval was assessed using axial 3D T2-SPACE images. The morphological grading was evaluated using a four-point scale: 0 = homogeneously low signal intensity with normal thickness, 1 = high signal intensity with normal thickness, 2 = reduced thickness, 3 = full-thickness rupture or indistinguishable from surrounding structures. Additionally, the number of cervical levels exhibiting degeneration was documented. RESULTS: When comparing the WAD and nontraumatic groups, a significant difference was observed in the proportion of high-grade TL changes (grade 2 or 3) and the number of degenerated cervical levels. Logistic regression analysis revealed that high-grade TL changes and a lower number of degenerative levels independently predicted the presence of WAD. Within the WAD group, the subset of patients with high-grade TL changes demonstrated a significantly higher mean age than the low-grade group (grade 0 or 1). CONCLUSION: High-grade morphological changes in the TL can be detected in patients with WAD through the use of 3D SPACE sequences. Clinical relevance statement 3D SPACE MRI could serve as an instrumental tool in the assessment of TL among patients with WAD. Integrating MRI findings with patient history and symptomology could facilitate the identification of potential ligament damage, and may help treatment and follow-up planning.