RESUMEN
【Objective】 To observe the effects of mirror neuron system theory(MNST) on hand dexterity and fine motor function in preschool children with developmental coordination disorder(DCD), so as to provide reference for the rehabilitation of children with DCD. 【Methods】 A total of 51 children with DCD treated at Nantong Maternal and Child Health Care Hospital from June 2021 to April 2023 were enrolled in this study, and were randomly assigned to treatment group (n=26) and control group (n=25) except for 5 cases who missed in the follow-up. Both groups received conventional rehabilitation training, while the treatment group received MNST additionally. The hand dexterity and fine motor function of both groups were assessed using the hand dexterity subscale of the Movement Assessment Battery for Children-Second Edition (MABC-2), Peabody Developmental Motor Scale-Fine Motor (PDMS-FM), and Function Independence Measure for Children (WeeFIM) before and after 12 weeks of treatment. 【Results】 Before treatment, there were no significant differences in hand dexterity subscale of MABC-2, PDMS-FM, and WeeFIM scores between the two groups (P>0.05). After treatment, both groups showed improvements in hand dexterity subscale of MABC-2, PDMS-FM, and WeeFIM scores (treatment group: t=35.620, 42.084, 40.072; control group: t=14.000, 12.017, 14.054, P<0.001), with the treatment group showing significantly greater improvements compared to the control group (t=2.611, 3.120, 2.331, P<0.05). 【Conclusion】 MNST combined with conventional rehabilitation training can enhance hand dexterity and fine motor function in children with DCD, thereby improving children′s activities of daily living.
RESUMEN
ObjectiveTo observe the recovery of proprioception of the affected ankle over time after lateral ankle sprain accepting routine rehabilitation. MethodsFrom June, 2020 to June, 2022, 18 patients with lateral ankle sprain in Kunshan Rehabilitation Hospital underwent routine rehabilitation for twelve weeks. They were measured active and passive position sense of bilateral ankles using an isokinetic dynamometer before treatment, and four, eight and twelve weeks after treatment, respectively. ResultsThe active presentation difference of affected ankle reduced after treatment (F = 22.533, P < 0.001), but it was more than that of the healthy ankle at the same time (t > 4.419, P < 0.001). No significant improvement was found in passive presentation difference of affected ankle after treatment (F = 1.175, P > 0.05), and it was not significantly different from those of the healthy ankle at the same time (|t| < 0.646, P > 0.05). ConclusionProprioception of affected ankle has been impaired after lateral ankle sprain, and it can be recovered after rehabilitation, but cannot achieve the healthy level even after three months of training. Passive position sense as an index of proprioception needs more researches.
RESUMEN
Omicron, a newly emerging SARS-CoV-2 variant, carried a large number of mutations in the spike protein leading to an unprecedented evasion from many neutralizing antibodies (nAbs). Here, we performed a head-to-head comparison of Omicron with other existing highly evasive variants in terms of their reduced sensitivities to antibodies, and found that Omicron variant is significantly more evasive than Beta and Mu variants. Of note, some key mutations occur in the conserved epitopes identified previously, especially in the binding sites of Class 4 nAbs, contributing to the increased Ab evasion. We also reported a broadly nAb (bnAb), VacW-209, which effectively neutralized all tested SARS-CoV-2 variants and even SARS-CoV. Finally, we determined six cryo-electron microscopy structures of VacW-209 complexed with the spike ectodomains of wild-type, Delta, Mu, C.1.2, Omicron, and SARS-CoV, and revealed the molecular basis of the broadly neutralizing activities of VacW-209 against SARS-CoV-2 variants. Overall, Omicron has once again raised the alarm over virus variation with significantly compromised neutralization. BnAbs targeting more conserved epitopes among variants will continue to play a key role in pandemic control and prevention. One sentence summaryStructural and functional analyses reveal that a human antibody named VacW-209 confers broad neutralization against SARS-CoV-2 variants including Omicron by recognizing a highly conserved epitope.
RESUMEN
Objective:To observe the effect of speech training based on mirror neuron theory on children with functional articulation disorder (FAD).Methods:Fifty children with FAD were randomly divided into a training group and a control group, each of 25. Both groups received 30 minutes of conventional speech training 5 times a week for 24 weeks, while the training group was additionally given 20 minutes of speech training based on mirror neuron theory simultaneously. Before and after the intervention, both groups were evaluated using the articulation speech ability assessment scale and the oral motor ability assessment scale.Results:Before the treatment, there were no significant differences between the 2 groups in any of the measurements. After the treatment, significant improvement was observed in all of the measurements for both groups, but at that point the training group′s articulation, motor ability of the lower jaw, tongue and lips were all significantly superior to the control group′s averages.Conclusions:Speech training based on mirror neuron theory can significantly improve the articulation, intelligibility and oral motor functioning of children with functional articulation disorder.
RESUMEN
Neutralizing monoclonal antibodies (nAbs) to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) represent promising candidates for clinical intervention against coronavirus virus diseases 2019 (COVID-19). We isolated a large number of nAbs from SARS-CoV-2 infected individuals capable of disrupting proper interaction between the receptor binding domain (RBD) of the viral spike (S) protein and the receptor angiotensin converting enzyme 2 (ACE2). In order to understand the mechanism of these nAbs on neutralizing SARS-CoV-2 virus infections, we have performed cryo-EM analysis and here report cryo-EM structures of the ten most potent nAbs in their native full-length IgG or Fab forms bound to the trimeric S protein of SARS-CoV-2. The bivalent binding of the full-length IgG is found to associate with more RBD in the "up" conformation than the monovalent binding of Fab, perhaps contributing to the enhanced neutralizing activity of IgG and triggering more shedding of the S1 subunit from the S protein. Comparison of large number of nAbs identified common and unique structural features associated with their potent neutralizing activities. This work provides structural basis for further understanding the mechanism of nAbs, especially through revealing the bivalent binding and their correlation with more potent neutralization and the shedding of S1 subunit.