Lijun Liu

Dietary supplement use is common among US adults. We aimed to investigate the quantity, duration, adherence, and reasons for supplement use in individuals who take supplements. Data from 2011 to 2018 from the National Health and Nutrition Examination Survey (NHANES) dataset were analyzed. Four cycles of data were combined to estimate these outcomes. Results are presented as overall group and by subgroups. All analyses were weighted to be nationally representative. The Taylor Series Linearization approach was used to generate variance estimates. A total of 12,529 participants were included. Over 70% of these individuals reported taking more than one unit of dietary supplements daily. Notably, approximately 40% had been taking supplements for more than five years and about 67% were highly adherent to at least one supplement. However, only 26.9% of these supplements were taken following a doctor’s recommendation. The primary reasons for dietary supplements intake included improving overall health (37.2%), maintaining health (34.7%), bone health (21.4%), and diet supplementation (20.3%). Our findings indicate that most participants proactively used multiple dietary supplements focused on self-managed health and prevention, with substantial dedication to long-term use and high adherence. Healthcare professionals should play a more active role in guiding such behaviors to optimize the health outcomes of dietary supplement users across the United States.

Preliminary study of the effect of outpatient oxygen therapy on patients with chronic respiratory insufficiency receiving home oxygen therapy Zhiping Xu, Lingxia Zhu, Xinfa Xu, Lan Zhu, Hui Feng, Aixia Zhu, Lijun Liu

Objectives: To retrospectively evaluate a multidisciplinary cooperative first aid model for the treatment of patients with pelvic and multiple fractures in the emergency department. Methods: The records of patients with pelvic fractures complicated with multiple fractures treated in our hospital from February 2020 to April 2021 were selected, of which 34 patients received conventional trauma first aid mode (control group) and 34 patients received multidisciplinary joint first aid mode (study group). We compared pelvic function (Majeed functional score) and fracture reduction outcomes, as well as serum inflammatory factor levels and complication rates after treatment between the two groups. Results: The Majeed score in the study group (90.15 ± 6.83) was higher than that in the control group (75. 47 ± 5.35), and the differences were statistically significant (P<0.05). The value for combined excellent and good rates of fracture reduction in the study group (85.29%, 29/34) was significantly higher than that in the control group (58.82%, 20/34), and the difference was statistically significant(P0.05); however, the serum levels of TNF-a and IL-6 in the study group were lower than those in the control group on the fifth day after admission, and the difference was statistically significant (P<0.05 or P<0.01). The incidence of complications in the study group (17.64%, 6/34) was significantly lower than that in the control group (61.76%, 21/34), the difference was statistically significant (P<0.05). Conclusion: The multidisciplinary cooperative first aid model for the treatment of patients with pelvic and multiple fractures can effectively shorten the treatment time, increase the excellent functional rehabilitation rate, inhibit the release of inflammatory factors, and reduce the incidence of complications (such as infections), when compared to the conventional trauma emergency system. doi: https://doi.org/10.12669/pjms.38.3.5014 How to cite this:Han Y, Peng G, Liu L, Xie X. Multidisciplinary cooperative first aid model for the treatment of patients with pelvic and multiple fractures. Pak J Med Sci. 2022;38(3):560-564. doi: https://doi.org/10.12669/pjms.38.3.5014 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Aging is regarded as a dominant risk factor for cancer. Additionally, inflammation and asthenic immune surveillance with aging may facilitate tumor formation and development. However, few studies have comprehensively analyzed the relationship between aging-related genes (AGs) and the prognosis, inflammation and tumor immunity of head and neck squamous cell carcinoma (HNSCC). Here, we initially screened 41 differentially expressed AGs from The Cancer Genome Atlas (TCGA) database. In the training set, a prognosis risk model with seven AGs (APP, CDKN2A, EGFR, HSPD1, IL2RG, PLAU and VEGFA) was constructed and validated in the TCGA test set and the GEO set (P < 0.05). Using univariate and multivariate Cox regression analyses, we confirmed that risk score was an independent prognostic factor of HNSCC patients. In addition, a high risk score was significantly correlated with immunosuppression, and high expression of PLAU, APP and EGFR was the main factor. Furthermore, we confirmed that a high risk score was significantly associated with levels of proinflammatory factors (IL-1α, IL-1β, IL-6 and IL-8) in HNSCC samples. Thus, this risk model may serve as a prognostic signature and provide clues for individualized immunotherapy for HNSCC patients.

Sherpa population is an ethnic group living in south mountainside of Himalayas for hundreds of years. They are famous as extraordinary mountaineers and guides, considered as a good example for successful adaptation to low oxygen environment in Tibetan highlands. Mitochondrial DNA (mtDNA) variations might be important in the highland adaption given its role in coding core subunits of oxidative phosphorylation in mitochondria. In this study, we sequenced the complete mtDNA genomes of 76 unrelated Sherpa individuals. Generally, Sherpa mtDNA haplogroup constitution was close to Tibetan populations. However, we found three lineage expansions in Sherpas, two of which (C4a3b1 and A4e3a) were Sherpa-specific. Both lineage expansions might begin within the past hundreds of years. Especially, nine individuals carry identical Haplogroup C4a3b1. According to the history of Sherpas and Bayesian skyline plot, we constructed various demographic models and found out that it is unlikely for these lineage expansions to occur in neutral models especially for C4a3b1. Nonsynonymous mutations harbored in C4a3b1 (G3745A) and A4e3a (T4216C) are both ND1 mutants (A147T and Y304H, respectively). Secondary structure predictions showed that G3745A were structurally closing to other pathogenic mutants, whereas T4216C itself was reported as the primary mutation for Leber’s hereditary optic neuropathy. Thus, we propose that these mutations had certain effect on Complex I function and might be important in the high altitude adaptation for Sherpa people.