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Causal associations of Sjögren’s syndrome with cancers: a two-sample Mendelian randomization study

Arthritis Res Ther. 2023 Sep 15;25(1):171. doi: 10.1186/s13075-023-03157-w.

ABSTRACT

BACKGROUND: Several observational studies have explored the associations between Sjögren’s syndrome (SS) and certain cancers. Nevertheless, the causal relationships remain unclear. Mendelian randomization (MR) method was used to investigate the causality between SS and different types of cancers.

METHODS: We conducted the two-sample Mendelian randomization with the public genome-wide association studies (GWASs) summary statistics in European population to evaluate the causality between SS and nine types of cancers. The sample size varies from 1080 to 372,373. The inverse variance weighted (IVW) method was used to estimate the causal effects. A Bonferroni-corrected threshold of P < 0.0031 was considered significant, and P value between 0.0031 and 0.05 was considered to be suggestive of an association. Sensitivity analysis was performed to validate the causality. Moreover, additional analysis was used to assess the associations between SS and well-accepted risk factors of cancers.

RESULTS: After correcting the heterogeneity and horizontal pleiotropy, the results indicated that patients with SS were significantly associated with an increased risk of lymphomas (odds ratio [OR] = 1.0010, 95% confidence interval [CI]: 1.0005-1.0015, P = 0.0002) and reduced risks of prostate cancer (OR = 0.9972, 95% CI: 0.9960-0.9985, P = 2.45 × 10-5) and endometrial cancer (OR = 0.9414, 95% CI: 0.9158-0.9676, P = 1.65 × 10-5). Suggestive associations were found in liver and bile duct cancer (OR = 0.9999, 95% CI: 0.9997-1.0000, P = 0.0291) and cancer of urinary tract (OR = 0.9996, 95% CI: 0.9992-1.0000, P = 0.0281). No causal effect of SS on other cancer types was detected. Additional MR analysis indicated that causal effects between SS and cancers were not mediated by the well-accepted risk factors of cancers. No evidence of the causal relationship was observed for cancers on SS.

CONCLUSIONS: SS had significant causal relationships with lymphomas, prostate cancer, and endometrial cancer, and suggestive evidence of association was found in liver and bile duct cancer and cancer of urinary tract, indicating that SS may play a vital role in the incidence of these malignancies.

PMID:37715206 | DOI:10.1186/s13075-023-03157-w

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Mechanical properties evaluation of metacarpophalangeal joint prosthesis with new titanium-nickel memory alloy: a cadaver study

BMC Musculoskelet Disord. 2023 Sep 15;24(1):738. doi: 10.1186/s12891-023-06859-z.

ABSTRACT

OBJECTIVE: Ni-Ti memory alloys are unusual materials for hard-tissue replacement because of their unique superelasticity, good biocompatibility, high strength, low specific gravity, low magnetism, wear resistance, corrosion resistance and fatigue resistance. The current study aims to evaluate its mechanical properties and provide biomechanical basis for the clinical application of the prosthesis.

METHODS: Ten adult metacarpophalangeal joint specimens were randomly divided into a prosthesis group (n = 5, underwent metacarpophalangeal joint prosthesis) and a control group (n = 5, underwent sham operation). Firstly, the axial compression strength was tested with BOSE material testing machine to evaluate its biomechanical strength. Secondly, these specimens were tested for strain changes using BOSE material testing machine and GOM non-contact optical strain measurement system to evaluate the stress changes. Thirdly, fatigue test was performed between groups. Lastly, the mechanical wear of the metacarpophalangeal joint prosthesis was tested with ETK5510 material testing machine to study its mechanical properties.

RESULTS: Axial compression stiffness in the prosthesis group was greater than that in the control group in terms of 30 ° and 60 ° flexion positions (P < 0.05). There was no statistically significant difference between two groups with regards to axial compression stiffness and stress change test (P > 0.05). In the fatigue wear test, the mean mass loss in the prosthesis group’s prosthesis was 17.2 mg and 17.619 mm3, respectively. The mean volume wear rate was 0.12%. There was no statistically significant difference in the maximum pull-out force of the metacarpal, phalangeal, and polymer polyethylene pads between the prosthesis group and the control group specimens.

CONCLUSIONS: Ni-Ti memory alloy metacarpophalangeal joint prosthesis conforms to the biomechanical characteristics of metacarpophalangeal joints without implants, and the fatigue strength can fully meet the needs of metacarpophalangeal joint activities after joint replacement.

PMID:37715199 | DOI:10.1186/s12891-023-06859-z

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Pleural fluid adenosine deaminase to serum C-reactive protein ratio for diagnosing tuberculous pleural effusion

BMC Pulm Med. 2023 Sep 15;23(1):349. doi: 10.1186/s12890-023-02644-9.

ABSTRACT

BACKGROUND: Tuberculous pleural effusion (TPE) and malignant pleural effusion (MPE) may occasionally show similar cytological and biochemical picture including ADA. In such cases, differentiating TPE and MPE is challenging and needs histopathology of pleural tissue which may involve invasive procedures. The present study aims to evaluate the diagnostic accuracy of pleural fluid ADA to serum CRP (ADA/CRP) ratio to discriminate between tuberculous and malignant pleural effusion. In addition, we investigated whether the ratio ADA/CRP adds diagnostic value to ADA.

METHODS: This cross-sectional study was conducted in the National Institute of Diseases of the Chest and Hospital (NIDCH), Mohakhali, Dhaka, from July 2021 to February 2022 on diagnosed patients of TPE and malignant pleural effusion MPE. A receiver operating characteristic curve (ROC) was constructed for identifying TPE. The added value of the ADA/CRP ratio to ADA was evaluated using the net reclassification improvement (NRI) and integrated discrimination improvement (IDI). A value of p < 0.05 was considered statistically significant for all tests.

RESULTS: Fifty-nine patients were enrolled in this study, of which 31 had TPE, and 28 had MPE. Pleural fluid ADA to serum CRP ratio and pleural fluid ADA level was significantly higher in patients with TPE, but there was no significant difference in serum CRP levels between patients with TPE and MPE. At cut off value of > 1.25, pleural fluid ADA to serum CRP ratio had a sensitivity of 93.8%, specificity of 85.2%, and positive and negative predictive values were 88.2% and 92% respectively, in the diagnosis of TPE and area under ROC curve (AUC) was 0.94. The NRI and IDI analyses revealed added diagnostic value of ADA/CRP to ADA.

CONCLUSION: This study shows that the ADA/CRP ratio improves the diagnostic usefulness of ADA for TPE.

PMID:37715196 | DOI:10.1186/s12890-023-02644-9

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Effect of ultrasound-guided pericapsular nerve group (PENG) block on pain during patient positioning for central nervous blockade in hip surgery: a randomized controlled trial

BMC Anesthesiol. 2023 Sep 15;23(1):316. doi: 10.1186/s12871-023-02245-3.

ABSTRACT

BACKGROUND: Most patients with hip fractures are elderly patients with comorbidities, and well-managed pain management is associated with positive postoperative outcomes. In recent years, new indications for regional anesthesia techniques have been defined, and they have found more place in clinical practice. Herein we investigate the effect of US-guided PENG block on positioning pain and compare that effect to intravenous opioid in patients undergoing surgery under spinal anesthesia for hip fractures. Additionally, we sought to investigate the effect of PENG block on pain scores, opioid intake, time to first analgesic requirement, and quality of recovery within the first 24 h following surgery.

METHODS: In this study, patients were divided into the PENG (n = 42) and control group (n = 42) one hour prior to surgery. A team who was blinded to the assigned groups, collected and evaluated all data such as spinal anesthesia positioning pain, postoperative pain, opioid requirement.

RESULTS: Patients that underwent PENG had statistically significantly lower NRS scores after interventions, immediately before positioning, at positioning and at end of spinal anesthesia. Pain scores during positioning for spinal anesthesia were statistically significantly lower in the PENG group than in the control group (p < 0.001). Total morphine use over the first 24 h was extremely statistically significantly lower in the PENG group (p < 0.001).

CONCLUSIONS: Positive outcomes of PENG block in patient positioning pain before spinal anesthesia, postoperative pain scores, and morphine consumption are consistent with similar studies. High patient satisfaction in patients who underwent PENG block contributes to the literature.

TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT04871061.

PMID:37715173 | DOI:10.1186/s12871-023-02245-3

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Effects of early mental state changes on physical functions in elderly patients with a history of falls

BMC Geriatr. 2023 Sep 15;23(1):564. doi: 10.1186/s12877-023-04274-6.

ABSTRACT

BACKGROUND: Fear of falling is a potential consequence for older adults who have experienced a fall. Whether such psychological concerns related to falls, in turn, affect physical function? Especially those who have a history of falling but have not been diagnosed with anxiety, depression, or both. This study aimed to clarify the effects of early psychological changes on the physical function of older patients.

METHODS: The 111 participants with falling history were divided into the poor physical function (PPF) group with the Short Physical Performance Battery (SPPB) ≤ 9 and the good physical function (GPF) group with SPPB > 9. Their physical function was assessed through 4-m gait speed (4MGS), five times sit-to-stand test (FTSST), grip strength, and Timed Up and Go tests TUGT. Their mental state was assessed by the self-rating anxiety/depression scale (SAS/SDS).

RESULTS: (1) SAS/SDS scores were negatively correlated with the SPPB score, gait speed, and maximum grip strength (males). (2) Multivariate logistic regression analysis showed that the SPPB score was subject to such independent influence factors: cerebrovascular disease (OR = 11.805; P = 0.005), normal ratio of grip strength (OR = 0.046; P = 0.016), TUGT (OR = 1.717; P < 0.001), and SDS score (OR = 1.154; P = 0.008). (3) The area under the ROC curve was 0.699 (0.601, 0.797) for SAS score, with a sensitivity of 0.776 and a specificity of 0.547; the AUC was 0.694 (0.596, 0.792) for SDS score, with a sensitivity of 0.586 and a specificity of 0.755.

CONCLUSIONS: In older adults with a history of falls without a diagnosis of anxiety or depression, higher SAS/SDS scores were associated with worse fall-related physical function, and there was a statistically significant correlation between the two. This may indicate a risk of falling again in the future.

PMID:37715166 | DOI:10.1186/s12877-023-04274-6

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Sexual orientation in transgender adults in the United States

BMC Public Health. 2023 Sep 15;23(1):1799. doi: 10.1186/s12889-023-16654-z.

ABSTRACT

BACKGROUND: Sexual orientation refers to a person’s enduring emotional, romantic, or sexual attractions to other people. Sexual orientation measures do not typically consider desires for, or sexual behavior with, transgender people. We describe measures inclusive of transgender people and characterize sexual orientation identity, behavior, and attraction in a representative sample of the U.S. transgender population.

METHODS: Between April 2016-December 2018, a U.S. national probability sample of transgender (n = 274) and cisgender (n = 1,162) adults were invited to complete a self-administered web or mailed paper survey. We assessed sexual identity with updated response options inclusive of recent identity terms (e.g., queer), and revised sexual behavior and attraction measures that included transgender people. Multiple response options were allowed for sexual behavior and attraction. Weighted descriptive statistics and sexual orientation differences by gender identity groups were estimated using age-adjusted comparisons.

RESULTS: Compared to the cisgender population, the transgender population was more likely to identify as a sexual minority and have heterogeneity in sexual orientation, behavior, and attraction. In the transgender population, the most frequently endorsed sexual orientation identities were “bisexual” (18.9%), “queer” (18.1%), and “straight” (17.6%). Sexually active transgender respondents reported diverse partners in the prior 5 years: 52.6% cisgender women (CW), 42.7% cisgender men (CM), 16.9% transgender women (TW), and 19.5% transgender men (TM); 27.7% did not have sex in the past 5 years. Overall, 73.6% were “somewhat”/ “very” attracted to CW, 58.3% CM, 56.8% TW, 52.4% TM, 59.9% genderqueer/nonbinary-females-at-birth, 51.9% genderqueer/nonbinary-males-at-birth. Sexual orientation identity, behavior, and attraction significantly differed by gender identity for TW, TM, and nonbinary participants (all p < 0.05).

CONCLUSIONS: Inclusive measures of sexual orientation captured diverse sexual identities, partner genders, and desires. Future research is needed to cognitively test and validate these measures, especially with cisgender respondents, and to assess the relation of sexual orientation and health for transgender people.

PMID:37715161 | DOI:10.1186/s12889-023-16654-z

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Fit accuracy in the rest region of RPDs fabricated by digital technologies and conventional lost-wax casting: a systematic review and meta-analysis

BMC Oral Health. 2023 Sep 15;23(1):667. doi: 10.1186/s12903-023-03348-6.

ABSTRACT

BACKGROUND: Digital technologies have recently been introduced into the fabrication of removable partial dentures (RPDs). However, it is still unclear whether the digitally fabricated RPDs fit better than conventionally cast ones in the rest region. The aim of this study was to evaluate the fit accuracy in the rest region of RPDs fabricated by digital technologies and compare it to those made by conventional lost-wax (CLW) technique.

METHODS: A comprehensive search was conducted in Cochrane Library, PubMed, EMbase, Web of Science and SpringerLink. Studies published up to August 2022 were collected. Two authors analyzed the studies independently and assessed the risk of bias on the modified methodological index for non-randomized studies (MINORS) scale. The mean values of gap distance between rests and corresponding rest seats of each study were extracted as outcome. A random-effects model at a significance level of P < 0.05 was used in the global comparison and subgroup analysis was carried out.

RESULTS: Overall, 11 articles out of 1214 complied with the inclusion criteria and were selected, including 2 randomized controlled trials (RCTs), 1 non-randomized clinical trial and 8 in vitro studies. Quantitative data from Meta-analysis revealed that fit accuracy in the rest region of RPDs fabricated with CLW showed no statistically significant difference with digital techniques (SMD = 0.33, 95%CI (-0.18, 0.83), P = 0.21). Subgroup analysis revealed a significantly better fit accuracy of CLW-fabricated RPDs in the rest region than either additive manufacturing (AM) groups or indirect groups (P = 0.03, P = 0.00), in which wax or resin patterns are milled or printed before conventional casting. While milled RPDs fit significantly better than cast ones in the rest region (P = 0.00). With digital relief and heat treatment, hybrid manufactured (HM) clasps obtained better fit accuracy in the rest region (P < 0.05). In addition, finishing and polishing procedure had no significant influence in the fit accuracy in all groups (P = 0.83).

CONCLUSIONS: RPDs fabricated by digital technologies exhibit comparable fit accuracy in rest region with those made by CLW. Digital technologies may be a promising alternative to CLW for the fabrication of RPDs and additional studies are recommended to provide stronger evidence.

TRIAL REGISTRATION: CRD42020201313.

PMID:37715159 | DOI:10.1186/s12903-023-03348-6

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Application of non-invasive neuromodulation in children with neurodevelopmental disorders to improve their sleep quality and constipation

BMC Pediatr. 2023 Sep 15;23(1):465. doi: 10.1186/s12887-023-04307-4.

ABSTRACT

BACKGROUND: Children with neurodevelopmental disorders have a very wide clinical variability. A common prevalent factor is problems with stool and sleep quality. Currently, there are multiple studies related to their evaluation, but not so much related to a specific intervention. The aim was to evaluate the effectiveness and safety of the application of non-invasive neuromodulation as a treatment in children with neurodevelopmental disorders to improve constipation and quality of sleep.

METHODS: A total of 23 minors aged between 2 and 16 were included in this cross-sectional study. All participants were applied the microcurrent device for 60 min, 3 times per week for a total of 4 weeks. The technique was based on non-invasive neuromodulation using a surface-applied microcurrent electrostimulation device that administers an external, imperceptible, pulsed electrical stimulation. It is applied to the extremities, in a coordinated manner, using gloves and anklets connected with electrodes to a control console. Sleep latency and microarousals were evaluated through a sleep diary. To assess the evolution and type of defecation, the adapted and validated version in Spanish of the Bristol Stool Form Scale was used.

RESULTS: No adverse events occurred during the study and no incidences were registered. Clinically relevant improvements were registered in defecation frequency and type as well as in sleep related parameters. An increase in the hours of sleep was registered, from 7,35 (0,83) to 9,09 (1,35), and sleep interruptions decreased from 3,83 (1,95) to 1,17 (1,11), (p < .001).

CONCLUSION: Microcurrents can be used as an effective and safe treatment to improve quality of sleep and constipation in children with neurodevelopmental disorders. More studies are needed in order to obtain statistically significant results.

TRIAL REGISTRATION: ClinicalTrials.gov ID: NCT05265702.

FIRST REGISTRATION: 03/03/2022 PROTOCOL: https://clinicaltrials.gov/ct2/show/NCT05265702?term=baez+suarez&draw=2&rank=4.

PMID:37715152 | DOI:10.1186/s12887-023-04307-4

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SASE, Success and Adverse event Score in Endoscopic Retrograde Cholangiopancreatography: a Novel Grading System

BMC Gastroenterol. 2023 Sep 15;23(1):314. doi: 10.1186/s12876-023-02942-w.

ABSTRACT

BACKGROUND: Validated, accepted grading tools for preprocedural complexity assessment in ERCP are lacking. We therefore created a grading system for ERCP based on the classification used by the American Society for Gastrointestinal Endoscopy (ASGE).

METHODS: Data on ERCP adverse events (AE) and success were collected in a multicenter, prospective uncontrolled study. Multiple logistic regressions were applied to success and AEs in accordance with the ASGE classification. Each procedure suggested by ASGE was tested against different outcomes. Results were used to create a score and were evaluated in a control cohort.

RESULTS: 16,327 ERCPs were documented in 27 centers. Analysis of ASGE categorization (10,904 cases) showed that this model fails to adequately predict parameters of complexity; only for cardiopulmonary AEs and perforation was no significant variance evident. Depending on the specific clinical circumstances, probability of success of the intervention sometimes varied significantly in risk, implying a twofold score, one part for probability of success and one for risk. A split score with three levels each was designed and tested in a validation cohort (5,423 procedures). Achieving therapeutic targets / post-ERCP pancreatitis could be correctly predicted in 87.0%/95.3%.

CONCLUSIONS: Grading ERCP success and AEs have to be considered independently. Onefold grading systems appear incomplete and unable to provide an adequate classification of severity. SASE (Success and Adverse Event Score in Endoscopic Retrograde Cholangiopancreatography) was created to incorporate these findings. Showing high predictive value, this score could be a potent tool for planning ERCP and training in endoscopy.

PMID:37715151 | DOI:10.1186/s12876-023-02942-w

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Assessing young adults’ menopause knowledge to increase understanding of symptoms and help improve quality of life for women going through menopause; a student survey

BMC Womens Health. 2023 Sep 15;23(1):493. doi: 10.1186/s12905-023-02641-4.

ABSTRACT

BACKGROUND: Due to menopause being a largely invisible and under-discussed topic in wider society, women often deal with menopause-related complications on their own. Social support and awareness have been shown to reduce negative menopausal experiences; however, lack of menopause knowledge, particularly among younger people, may deter support for women suffering from menopause symptoms. This study aims to assess the level of knowledge young adults have on menopause to be able to create interventions that target knowledge gaps and increase understanding of women’s experiences and difficulties during their menopause transition.

METHODS: We created an electronic questionnaire based on menopause literature and guidelines from Menopause Societies. It was pilot-tested on young people in the target group age (n = 14; 7 male and 7 female), menopause clinicians (n = 5), and women experiencing menopause (n = 4). The final survey included questions on participant demographics, general menopause knowledge, and options to support menopause management and was distributed through university student newsletters. Responses over a two week period were collected anonymously. Descriptive statistics were applied to characterize participants, define menopause knowledge, and identify gaps. Chi-squared statistics was used for group comparison, and open questions were analyzed using qualitative content analysis.

RESULTS: Survey responses were collected from 828 students; the average age was 22.1 ± 5.1 and 83.6% were female. Participants belonged to all faculties and included students from a variety of family settings and living conditions. Knowledge questions revealed a good understanding of the basic menopause physiology for most respondents, but there were gaps in understanding of symptoms and symptom management. Female sex and personal connection to menopausal women had a positive effect on the degree of menopause knowledge. Both males and females reported increased knowledge confidence at the end of the survey.

CONCLUSION: Our survey provides evidence that young adults of both sexes have a general baseline knowledge of menopause and its symptoms and are open to learning strategies to help support menopausal women. Our findings will assist in developing targeted educational resources to increase social support and awareness, reduce stigma and improve the quality of life for menopausal women, and help prepare younger women for their future menopause journey.

PMID:37715143 | DOI:10.1186/s12905-023-02641-4