Objective To analyze the clinical significance of subjective visual vertical (SVV) tests at different head deflection angles in assessing utricle function in patients with benign paroxysmal positional vertigo (BPPV). Methods A total of 61 BPPV patients who were treated at the Hearing Impairment and Vertigo Diagnosis and Treatment Center of Otolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine from August 2022 to May 2023 were retrospectively included, and 29 healthy adults were selected as controls. SVV tests were performed on all research subjects at different head deflection angles: upright head (0°), left head 45° (L45°), right head 45° (R45°). The test results between the two groups were compared. Results SVV absolute value at R45° in BPPV group was lower than that in the control group (P＝0.003); there was no significant difference in SVV values at 0° and L45° between the two groups. There was no statistical difference in SVV values at different head deflection angles between the control group and the left BPPV group. SVV absolute value at R45° in right BPPV group was lower than that in the control group (P＜0.001); there was no statistical difference in SVV values at 0° and L45° between the two groups. Conclusions SVV test can provide subjective information about the utricle, and SVV tests at different head deflection angles can fine-tune evaluate the function of the utricle in BPPV patients.

ObjectiveTo investigate the chemical constituents of Chuanxiong Rhizoma-Paeoniae Radix Rubra（CRPRR） that cross the blood-brain barrier in rats with ischemic stroke， their brain-protective effects， and their impact on inflammatory factors including tumor necrosis factor-α （TNF-α）， interleukin-1β （IL-1β）， and interleukin-18 （IL-18） based on ultra-high performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry （UPLC-Q-TOF-MS） and pharmacodynamic experiments. MethodsA focal cerebral ischemia-reperfusion injury model was established in rats via the middle cerebral artery occlusion/reperfusion （MCAO/R） method using intraluminal suture. Neurological function was evaluated using behavioral scoring. UPLC-Q-TOF-MS was employed to identify the chemical constituents of CRPRR that crossed the blood-brain barrier and entered the cerebrospinal fluid in MCAO/R model rats. Male Sprague-Dawley rats were randomly divided into six groups： sham operation group， model group， low-， medium-， and high-dose CRPRR groups （1.35， 2.7， 5.4 g·kg^-1， respectively）， and an edaravone group （5 mg·kg^-1）， with 12 rats in each group. The sham and model groups received normal saline， while the treatment groups received the respective doses of CRPRR once daily by gavage for three consecutive weeks. The brain-protective effects of CRPRR were assessed using the Longa five-point scoring method， open field test， Morris water maze， 2，3，5-triphenyltetrazolium chloride （TTC） staining， hematoxylin and eosin （HE） staining， and transmission electron microscopy. ResultsNine chemical constituents were identified in the cerebrospinal fluid containing CRPRR， namely paeoniflorin， senkyunolide F， senkyunolide G， paeonimetabolin Ⅰ， paeoniflorin derivative， senkyunolide H， benzoylpaeoniflorin， senkyunolide A， and ligustilide. Animal experiment results showed that compared with the sham operation group， the model group exhibited disordered neuronal arrangement， severe vacuolation， nuclear pyknosis， and evident mitochondrial swelling. Chromatin aggregation and peripheralization were also observed. Neurological scores and the number of crossings in the central region were significantly increased （P<0.01）， while platform crossings were significantly decreased （P<0.01）， and clear infarct areas were present （P<0.01）. Serum levels and protein expression of TNF-α， IL-1β， and IL-18 were significantly elevated （P<0.01）. Compared with the model group， all dose groups of CRPRR showed marked improvement in neuronal morphology which was close to the normal level， with mitochondrial swelling alleviated and chromatin distribution more uniform. The medium- and high-dose groups significantly reduced neurological scores （P<0.01）， while the low-， medium-， and high-dose groups significantly reduced the number of central crossings （P<0.01） and infarct volume （P<0.01）， and decreased TNF-α， IL-1β， and IL-18 levels （P<0.05， P<0.01） compared with the model group. Furthermore， the medium- and high-dose groups significantly reduced TNF-α protein expression （P<0.05，P<0.01）， and the high-dose group significantly reduced IL-1β and IL-18 protein expression （P<0.01）. ConclusionThis study confirmed that CRPRR improves neurological function and alleviates brain tissue damage in MCAO/R rats. Its mechanism may be associated with the downregulation of inflammatory factors TNF-α， IL-1β， and IL-18， as well as the presence of nine active chemical constituents in cerebrospinal fluid， namely paeoniflorin， senkyunolide F， senkyunolide G， paeonimetabolin Ⅰ， paeoniflorin derivative， senkyunolide H， benzoylpaeoniflorin， senkyunolide A， and ligustilide， which are closely related to their brain-protective effects.

ObjectiveTo investigate the chemical constituents of Chuanxiong Rhizoma-Paeoniae Radix Rubra（CRPRR） that cross the blood-brain barrier in rats with ischemic stroke， their brain-protective effects， and their impact on inflammatory factors including tumor necrosis factor-α （TNF-α）， interleukin-1β （IL-1β）， and interleukin-18 （IL-18） based on ultra-high performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry （UPLC-Q-TOF-MS） and pharmacodynamic experiments. MethodsA focal cerebral ischemia-reperfusion injury model was established in rats via the middle cerebral artery occlusion/reperfusion （MCAO/R） method using intraluminal suture. Neurological function was evaluated using behavioral scoring. UPLC-Q-TOF-MS was employed to identify the chemical constituents of CRPRR that crossed the blood-brain barrier and entered the cerebrospinal fluid in MCAO/R model rats. Male Sprague-Dawley rats were randomly divided into six groups： sham operation group， model group， low-， medium-， and high-dose CRPRR groups （1.35， 2.7， 5.4 g·kg^-1， respectively）， and an edaravone group （5 mg·kg^-1）， with 12 rats in each group. The sham and model groups received normal saline， while the treatment groups received the respective doses of CRPRR once daily by gavage for three consecutive weeks. The brain-protective effects of CRPRR were assessed using the Longa five-point scoring method， open field test， Morris water maze， 2，3，5-triphenyltetrazolium chloride （TTC） staining， hematoxylin and eosin （HE） staining， and transmission electron microscopy. ResultsNine chemical constituents were identified in the cerebrospinal fluid containing CRPRR， namely paeoniflorin， senkyunolide F， senkyunolide G， paeonimetabolin Ⅰ， paeoniflorin derivative， senkyunolide H， benzoylpaeoniflorin， senkyunolide A， and ligustilide. Animal experiment results showed that compared with the sham operation group， the model group exhibited disordered neuronal arrangement， severe vacuolation， nuclear pyknosis， and evident mitochondrial swelling. Chromatin aggregation and peripheralization were also observed. Neurological scores and the number of crossings in the central region were significantly increased （P<0.01）， while platform crossings were significantly decreased （P<0.01）， and clear infarct areas were present （P<0.01）. Serum levels and protein expression of TNF-α， IL-1β， and IL-18 were significantly elevated （P<0.01）. Compared with the model group， all dose groups of CRPRR showed marked improvement in neuronal morphology which was close to the normal level， with mitochondrial swelling alleviated and chromatin distribution more uniform. The medium- and high-dose groups significantly reduced neurological scores （P<0.01）， while the low-， medium-， and high-dose groups significantly reduced the number of central crossings （P<0.01） and infarct volume （P<0.01）， and decreased TNF-α， IL-1β， and IL-18 levels （P<0.05， P<0.01） compared with the model group. Furthermore， the medium- and high-dose groups significantly reduced TNF-α protein expression （P<0.05，P<0.01）， and the high-dose group significantly reduced IL-1β and IL-18 protein expression （P<0.01）. ConclusionThis study confirmed that CRPRR improves neurological function and alleviates brain tissue damage in MCAO/R rats. Its mechanism may be associated with the downregulation of inflammatory factors TNF-α， IL-1β， and IL-18， as well as the presence of nine active chemical constituents in cerebrospinal fluid， namely paeoniflorin， senkyunolide F， senkyunolide G， paeonimetabolin Ⅰ， paeoniflorin derivative， senkyunolide H， benzoylpaeoniflorin， senkyunolide A， and ligustilide， which are closely related to their brain-protective effects.

Aim To explore the protective effect of PPARδ agonist GW501516 on neuro-vascular unit(NVU)injury induced by high glucose in vitro and its mechanism.Methods SD rat hippocampal neurons(Neu),astrocytes(Ast)and brain microvascular en-dothelial cells(BMEC)were isolated,purified and cultured in vitro,and NVU co-culture system was estab-lished.NVU co-culture system cells were divided into the control group,high glucose group(HG group),HG+GW501516 low,medium and high concentration groups(25,50 and 100 nmol·L-1)and HG+GW501516(100 nmol·L-1)+ANA12(TrkB inhibi-tor,5 μmol·L-1)group.NUV barrier function was e-valuated by transendothelial resistance(TEER)test and leakage test;the proliferative activity of Neu cells in co-culture system was detected by CCK-8 assay;the levels of inflammatory cytokines TNF-α,IL-6 and IL-1β in cell supernatant were detected by ELISA;the levels of SOD,MDA and NO in Neu cells were detected by chemical method;the apoptosis level was detected by flow cytometry;the protein expression levels of PPARδ,Bax,Bcl-2,cleaved caspase-3,and BDNF/TrkB pathway-related proteins BDNF,p-TrkB,and TrkB in Neu cells were detected by Western blot.Re-sults Compared with the control group,the TEER val-ue decreased and leakage value increased in HG group;the proliferation activity of Neu cells decreased,the levels of TNF-α,IL-6,IL-1β in supernatant and MDA and NO in Neu cells increased,and the SOD lev-el decreased;Neu cell apoptosis rate and expression levels of Bax and Cleaved caspase-3 increased,while the expression levels of PPARδ,Bcl-2,BDNF and p-TRKB/TrkB decreased(P＜0.05).Compared with the HG group,after treatment with different concentra-tions of GW501516,TEER value increased,leakage value decreased,proliferation activity of Neu cells in-creased,levels of TNF-α,IL-6,IL-1β in supernatant and MDA and NO in Neu cells decreased,and SOD level increased,and apoptosis rate of Neu cells and ex-pression levels of Bax and cleaved caspase-3 were de-creased,and expression levels of PPARδ,Bcl-2,BDNF and p-TRKB/TrkB increased(P＜0.05)in a dose-dependent manner.However,ANA12 intervention re-versed the effect of GW501516 on NVU damage under high glucose conditions.Conclusion PPARδ agonist GW501516 improves in vitro NVU injury induced by high glucose by activating BDNF/TrkB signaling path-way.

Aim To explore the mechanism of Yanghe decoction-containing serum on the migration and inva-sion of MCF-7 breast cancer cells in a co-culture sys-tem with M2 tumor-associated macrophages(TAMs)based on the paracrine epidermal growth factor(EGF)/epidermal growth factor receptor(EGFR)sig-naling pathway.Methods The M2-type TAMs model was induced from THP-1 monocytic cell line through in vitro treatment with phorbol 12-myristate 13-acetate(PMA)and recombinant human macrophage colony-stimulating factor(M-CSF).The MCF-7 cells were co-cultured with M2-type TAMs using a Transwell non-contact co-culture system to evaluate their effects on migration and invasion.Subsequently,the cells were intervened with serum containing Yanghe decoction,and the proliferation of MCF-7 cells was detected using the CCK-8 assay,while their lateral migration ability was assessed through scratch assays.The invasion and vertical migration abilities of the cells were evaluated separately using Transwell assays,and the concentra-tion of EGF was measured using ELISA.Finally,the expression of EGFR,MCP-1,and MMP9 proteins was detected using Western blot.Results Compared to the control group,Yanghe decoction-containing serum in-hibited the proliferation of MCF-7 cells before and after co-culture.The serum reduced the scratch healing a-bility before and after co-culture and decreased their migration and invasion abilities.Additionally,Yanghe decoction-containing serum reduced the levels of EGF before and after co-culture and decreased the expres-sion of EGFR,MCP-1,and MMP9 proteins before and after+co-culture.Conclusion Yanghe decoction-containing serum can inhibit the migration and invasion of breast cancer MCF-7 cells before and after co-cul-ture with M2 TAMs.This effect may be related to the inhibition of the EGF-EGFR signaling pathway.

Diagnosis and treatment of cognitive impairment is one of the difficult problems in the diagnosis and treatment of brain diseases.Any factor that causes functional and structural abnormalities in cerebral cortex can lead to cognitive impair-ment,which has a high incidence,a large number of patients and a heavy burden of disease.Because of the complexity of its pathogenesis,no effective preventive and curative measures have yet been taken.In recent years,many studies reveal that neu-roinflammation is involved in the pathogenesis of neurological diseases related to cognitive impairment,which has become a re-search hotspot in this field.This article provides a summary of the role of neuroinflammation-related biomarkers in the patho-genesis of cognitive impairment and their regulatory mecha-nisms,with a view to providing a further theoretical basis for the prevention and treatment of cognitive impairment.

Objective Mobile artificial lumbar complex(MALC)which suitable for reconstruction after subtotal lumbar resection in goats was developed,and to test stability of the complex and postoperative lumbar segmental motor function.Methods Eighteen male boer goats aged from 1 to 2 years old(weighted from 35 to 45 kg)were selected and divided into con-trol group,fusion group and non-fusion group,with 6 goats in each group.According to preoperative CT scans and MRI exami-nations of lumbar,the goat MALC was designed and performed by 3D printed for non-fusion group.Operation was performed on three groups respectively,and only vertebral body and disc were exposed in control group.In fusion group,L4 part of vertebral body and the upper and lower complete disc tissues were removed,and the lumbar spine bone plate fixation was performed with titanium mesh bone grafting.In non-fusion group,vertebral body and disc were removed in the same way,and MALC was im-planted.AP and lateral X-rays of lumbar vertebrae in goat were taken at 6 months after surgery,in order to understand whether the plant was dislocated,displaced and fractured.Biomechanical tests were performed on the specimens by mechanical instru-ment to measure range of motion(ROM)of L2,3,L,4,L4,5intervertebral space and the overall ROM of L2-5 lumbar vertebrae.Results MALC of lumbar vertebra was designed by 3D printing,and its component artificial vertebrae and upper and lower ar-tificial end plates were manufactured.The semi-spherical structure was fabricated by precision lathe using high-crosslinked polyethylene material,and the prosthesis was assembled.Postoperative AP and lateral X-rays of lumbar vertebra at 6 months showed the implant position of implant and MALC were good without displacement and dislocation.In vitro biomechanical test of lumbar vertebrae specimens:(1)There were no statistical significance in ROM of lumbar intervertebral space flexion and extension,lateral flexion and rotation on L.4 and L4,5,between non-fusion group and control group(P＞0.05),while ROM of fu-sion group was significantly reduced compared with the other two groups(P＜0.05).There were no significant difference in ROM of L2.3 intervertebral flexion and extension,lateral flexion and rotation between non-fusion group and control group(P＞0.05),while fusion group was significantly increased compared with the other two groups(P＜0.001).(2)There was no signifi-cant difference in overall lumbar ROM of L2-5(P＞0.05).Conclusion The individual MALC could restore intervertebral height of lumbar vertebra while maintaining the stability of lumbar vertebra and re-establishing motor function of lumbar space.

Objective To explore clinical efficacy of proximal femoral nail anti-rotation(PFNA),InterTan and proximal femoral bionic intramedullary nail(PFBN)in treating femoral intertrochanteric fracture.Methods Clinical data of 120 patients with intertrochanteric fracture who were underwent closed reduction intramedullary nail-internal fixation from January 2020 to January 2021 were retrospectively analyzed.According to methods of internal fixation,patients were divided into 3 groups.There were 25 patients in PFBN group,including 16 females and 9 males,aged from 69 to 79 years old with an average of(73.67±5.16)years old.There were 55 patients in PFNA group,including 38 females and 17 males,aged from 68 to 80 years old with an average of(74.23±5.57)years old.There were 40 patients in InterTan group,including 26 females and 14 males,aged from 68 to 79 years old with an average of(73.45±5.34)years old.Operative time,intraoperative blood loss,incision length,hospital stay,weight-bearing time,fracture healing time and complications among 3 groups were compared,and clinical effect was evaluated by Harris score of hip function before operation,1,6 and 12 months after opertaion,respectively.Results Patients among 3 groups were successfully completed operation and were followed up for more than 12 months.There were no significant difference in hospital stay,operative time,intraoperative blood loss and incision length among 3 groups(P＞0.05).Weight bearing time of PFBN group(7.98±1.34)d and InterTan group(8.22±0.46)d were earlier than that of PFNA group(10.27±0.66)d(P＜0.01).Fracture healing time of PFBN group(10.14±2.33)weeks and InterTan group(11.87±2.48)weeks were earlier than that of PFNA group(13.68±2.36)weeks(P＜0.01).One month after operation,Harris score in PFBN group(70.52±5.34)and InterTan group(69.81±6.17)was higher than that of PFNA group(51.46±5.36),and there was no signifi-cant difference between PFBN group and InterTan group(f＞0.05).There were no significant difference in Harris scores among 3 groups before operation,6 and 12 months after opertaion(P＞0.05).Cases of complication of InterTan group and PFNA group were lower than that of PFNA group(P＜0.05).Conclusion PFBN and InterTan for the treatment of intertrochanteric fracture have advantages of faster fracture healing,earlier weight-bearing time and fewer postoperative complications than traditional PFNA,but three operations could achieve higher effective rates without significant difference in long-term results.

Objective To compare the clinical efficacy of the posterior hemipelvectomy of the greater trochanter approach with the standard Kocher-Langenbeck(K-L)approach in the treatment of posterior acetabulum wall fractures and to explore a more optimal approach for the treatment of posterior acetabulum wall fractures.Methods Total of 26 patients with posterior ac-etabulum wall fractures were retrospectively analysed and divided into two groups:the posterior hemipelvectomy of the greater trochanter group(test group)and the standard K-L approach group(control group).In the test group,there were 24 patients including 16 males and 8 females with an average age of(42.00±4.52)years old,the time of injury to surgery was(6.75±1.15)d.In the control group,there were 23 patients including 16 males and 7 females with an average age of(41.00±5.82)years old,the time of injury to surgery was(7.09±1.20)days.The total hospital stay,length of incision,operation time,intraoperative bleeding,postoperative drainage,discharge,fracture reduction quality(Matta criteria),hip abduction muscle strength,hip func-tion(Merle d'Aubigne-Postel score),postoperative complications and the incidence of ectopic ossification were compared.Results All cases were followed up for 6 months.There was no significant difference in incision length,intraoperative bleeding and postoperative drainage between two groups(P＞0.05).However,the operation time of the test group was shorter than that of the control group(P＜0.05).There was no statistically significant difference in fracture reduction and hip function between two groups(P＞0.05).The hip abduction muscle strength of test group was better than that of control group(P＜0.05).In addition,there was no significant difference in the incidence of postoperative complications and heterotopic ossification between two groups(P＞0.05).Conclusion Compared with the standard K-L approach,the posterior hemipelvectomy of the greater trochanter approach can shorten the operative time,has better recovery of the postoperative hip abduction muscle strength,ex-poses the view of the fracture involving the more comminuted posterior acetabulum wall or the fracture of the roof of the socket,improved the rate of fracture anatomical repositioning,provides a new idea for the clinical treatment of posterior acetabulum wall fractures,and allows patients to perform functional exercises at an early stage.

Vestibular rehabilitation is an effective means of treating vestibular dysfunction. Ensuring compliance and effectiveness of rehabilitation exercises is the key to rehabilitation. Telemedicine is unrestricted by time and space, convenient, accessible, and easy to spread, and has application value and practical significance in vestibular rehabilitation. This paper summarizes the research status and applications of telemedicine, providing a reference for medical and nursing staff to research telemedicine.