Objective To propose a brain electrical phase prediction method based on long short-term memory network(LSTM)to improve the accuracy and robustness of phase synchronization prediction in transcranial magnetic stimulation(TMS).Methods First,an LSTM consisting of an input layer,an LSTM layer,an ReLU activation layer,a fully connected layer and a regression layer was constructed to capture the EEG signal features through the synergistic action of input gates,forgetting gates and output gates.Second,eye-open resting-state EEG data from 30 healthy subjects were trained using the LSTM to obtain a predictive model for EEG signal and EEG phase prediction.Finally,the LSTM method and the traditional autoregressive(AR)method were compared in terms of the phase prediction errors at the overall and individual levels and the prediction performance for peaks and troughs.A regression model was used to explore the relationships between instantaneous EEG amplitude,signal-to-noise ratio and phase prediction error with the LSTM method.Results The LSTM method achieved a total phase prediction error of 0.04°±5.69°,which was lower than that of the traditional AR method(-3.36°±51.13°).For each subject,the LSTM method demonstrated superior phase prediction accuracy compared to the traditional AR method(P＜0.001).The accuracy for predicting peaks(troughs)by the LSTM method(about 89％)was higher than that by the traditional AR method(about 10％).Unlike the traditional AR method,the LSTM method didnot result in linear relationships between instantaneous EEG amplitude,signal-to-noise ratio and phase prediction error,with Pvalues being 0.58 and 0.18,respectively.Conclusion The LSTM-based brain electrical phase prediction method shows high accuracy and robustness when used for EEG phase-synchronized TMS.[Chinese Medical Equipment Journal,2025,46(3):1-8]

Objective To propose a brain electrical phase prediction method based on long short-term memory network(LSTM)to improve the accuracy and robustness of phase synchronization prediction in transcranial magnetic stimulation(TMS).Methods First,an LSTM consisting of an input layer,an LSTM layer,an ReLU activation layer,a fully connected layer and a regression layer was constructed to capture the EEG signal features through the synergistic action of input gates,forgetting gates and output gates.Second,eye-open resting-state EEG data from 30 healthy subjects were trained using the LSTM to obtain a predictive model for EEG signal and EEG phase prediction.Finally,the LSTM method and the traditional autoregressive(AR)method were compared in terms of the phase prediction errors at the overall and individual levels and the prediction performance for peaks and troughs.A regression model was used to explore the relationships between instantaneous EEG amplitude,signal-to-noise ratio and phase prediction error with the LSTM method.Results The LSTM method achieved a total phase prediction error of 0.04°±5.69°,which was lower than that of the traditional AR method(-3.36°±51.13°).For each subject,the LSTM method demonstrated superior phase prediction accuracy compared to the traditional AR method(P＜0.001).The accuracy for predicting peaks(troughs)by the LSTM method(about 89％)was higher than that by the traditional AR method(about 10％).Unlike the traditional AR method,the LSTM method didnot result in linear relationships between instantaneous EEG amplitude,signal-to-noise ratio and phase prediction error,with Pvalues being 0.58 and 0.18,respectively.Conclusion The LSTM-based brain electrical phase prediction method shows high accuracy and robustness when used for EEG phase-synchronized TMS.[Chinese Medical Equipment Journal,2025,46(3):1-8]

Objective:To investigate the effect and influencing factors of non-invasive correction of infants with congenital auricular deformity.Methods:The data of infants with congenital auricular deformity were retrospectively analyzed, who were treated with domestic external ear orthosis in the Department of Otolaryngology Head and Neck Surgery of Tianjin Hospital from January 1, 2019 to June 30, 2023. Before treatment, the skin was prepared routinely. First, the orthosis base was installed and pressed to fit the skin around the ear. Then, according to the type of auricle deformity, the ear hook and ear cover were installed, and the adhesive tape was fixed. During the corrective treatment, the orthosis was worn all day, and the treatment was ended if there was no obvious rebound after 1 month of observation. The complications were closely observed during treatment. After the treatment, the treatment effect was evaluated and divided into markedly effective, effective and ineffective. The markedly effective rate (markedly effective ears/total ears × 100%) and effective rate [(markedly effective ears + effective ears)/ total ears × 100%] were calculated. At the same time, the cure time of the markedly effective children was recorded, and they were grouped according to different types of auricle deformities and the initial age of correction (<2, 2-6, >6 weeks groups), and the related indicators were compared. SPSS 23.0 software was used for statistical analysis. The measurement data were expressed by Mean±SD. The comparison between multiple groups was analyzed by one-way ANOVA. The pairwise comparison between groups was performed by LSD method. The counting data was expressed by frequency (% or ratio). The comparison between multiple groups was performed by χ 2 test, and the pairwise comparison between groups was performed by Fisher test with adjusted α value. Results:A total of 31 cases (55 ears) were included, including 13 males (23 ears) and 18 females (32 ears), aged 4 to 127 d. There were 13 lop ears, 6 constricted ears, 6 cup ears, 4 Stahl’s ears, 5 prominent ears, 18 helical rim deformity ears, 2 conchal crus ears and 1 Ⅱ degree microtia ear. During the treatment, 5 ears had skin lesions, 5 ears had mild allergic reactions, and 2 ears had severe allergic reactions, who improved significantly and continued treatment after removal of the external orthosis and use of erythromycin ointment. After noninvasive correction treatment, the auricle deformity of the children was improved to different extent. The overall markedly effective rate was 70.91% (39/55), and the overall effective rate was 90.91% (50/55). The markedly effective rate of lop ear, constricted ear, cup ear, Stahl’s ear, prominent ear, helical rim deformity ear, conchal ear and Ⅱ degree microtia ear were 13/13, 4/6, 4/6, 4/4, 4/5, 8/18, 2/2, 0/1 respectively. The average cure time of 39 markedly effective ears was (36.08±14.77) d. The cure time of different auricle deformity types was statistically significant ( P<0.01). Pairwise comparison between the groups showed that the cure time of lop ears was shorter than constricted ears, cup ears, Stahl’s ear, prominent ears, and that the cure time of prominent ears was longer than lop ears, constricted ears, cup ears, Stahl’s ears, helical rim deformity ears, conchal crus ears (all P<0.05). According to different initial ages of correction, the children were divided into <2-week-old group (12 cases, 21 ears), 2-6-week-old group (10 cases, 18 ears), and >6-week-old group (9 cases, 15 ears), excluding 1 Ⅱ degree microtia ear. The markedly effective rates were (90.5%) 19/21, 13/18, and 7/15, respectively, with statistically significant differences ( P<0.05). The comparison between groups showed that the markedly effective rate of <2-week-old group was significantly higher than that of >6-week-old group ( P<0.017), but there was no statistically significant difference in the cure time among the three groups ( P>0.05). Conclusion:The effect of non-invasive correction for congenital auricular deformity in infants is significant. The type of congenital auricular deformity is a key factor that affects the therapeutic effect and cure time. In lop ear, Stahl’s ear, prominent ear and conchal crus deformity, good therapeutic effects can be seen, but in constricted ear, cup ear, helical rim deformity ear and Ⅱ degree microtia, the effects are poor. The cure time of lop ear is short, while the cure time of prominent ear is long. The better effect can be acquired in the earlier non-invasive correction.

Objective:To investigate the effect and influencing factors of non-invasive correction of infants with congenital auricular deformity.Methods:The data of infants with congenital auricular deformity were retrospectively analyzed, who were treated with domestic external ear orthosis in the Department of Otolaryngology Head and Neck Surgery of Tianjin Hospital from January 1, 2019 to June 30, 2023. Before treatment, the skin was prepared routinely. First, the orthosis base was installed and pressed to fit the skin around the ear. Then, according to the type of auricle deformity, the ear hook and ear cover were installed, and the adhesive tape was fixed. During the corrective treatment, the orthosis was worn all day, and the treatment was ended if there was no obvious rebound after 1 month of observation. The complications were closely observed during treatment. After the treatment, the treatment effect was evaluated and divided into markedly effective, effective and ineffective. The markedly effective rate (markedly effective ears/total ears × 100%) and effective rate [(markedly effective ears + effective ears)/ total ears × 100%] were calculated. At the same time, the cure time of the markedly effective children was recorded, and they were grouped according to different types of auricle deformities and the initial age of correction (<2, 2-6, >6 weeks groups), and the related indicators were compared. SPSS 23.0 software was used for statistical analysis. The measurement data were expressed by Mean±SD. The comparison between multiple groups was analyzed by one-way ANOVA. The pairwise comparison between groups was performed by LSD method. The counting data was expressed by frequency (% or ratio). The comparison between multiple groups was performed by χ 2 test, and the pairwise comparison between groups was performed by Fisher test with adjusted α value. Results:A total of 31 cases (55 ears) were included, including 13 males (23 ears) and 18 females (32 ears), aged 4 to 127 d. There were 13 lop ears, 6 constricted ears, 6 cup ears, 4 Stahl’s ears, 5 prominent ears, 18 helical rim deformity ears, 2 conchal crus ears and 1 Ⅱ degree microtia ear. During the treatment, 5 ears had skin lesions, 5 ears had mild allergic reactions, and 2 ears had severe allergic reactions, who improved significantly and continued treatment after removal of the external orthosis and use of erythromycin ointment. After noninvasive correction treatment, the auricle deformity of the children was improved to different extent. The overall markedly effective rate was 70.91% (39/55), and the overall effective rate was 90.91% (50/55). The markedly effective rate of lop ear, constricted ear, cup ear, Stahl’s ear, prominent ear, helical rim deformity ear, conchal ear and Ⅱ degree microtia ear were 13/13, 4/6, 4/6, 4/4, 4/5, 8/18, 2/2, 0/1 respectively. The average cure time of 39 markedly effective ears was (36.08±14.77) d. The cure time of different auricle deformity types was statistically significant ( P<0.01). Pairwise comparison between the groups showed that the cure time of lop ears was shorter than constricted ears, cup ears, Stahl’s ear, prominent ears, and that the cure time of prominent ears was longer than lop ears, constricted ears, cup ears, Stahl’s ears, helical rim deformity ears, conchal crus ears (all P<0.05). According to different initial ages of correction, the children were divided into <2-week-old group (12 cases, 21 ears), 2-6-week-old group (10 cases, 18 ears), and >6-week-old group (9 cases, 15 ears), excluding 1 Ⅱ degree microtia ear. The markedly effective rates were (90.5%) 19/21, 13/18, and 7/15, respectively, with statistically significant differences ( P<0.05). The comparison between groups showed that the markedly effective rate of <2-week-old group was significantly higher than that of >6-week-old group ( P<0.017), but there was no statistically significant difference in the cure time among the three groups ( P>0.05). Conclusion:The effect of non-invasive correction for congenital auricular deformity in infants is significant. The type of congenital auricular deformity is a key factor that affects the therapeutic effect and cure time. In lop ear, Stahl’s ear, prominent ear and conchal crus deformity, good therapeutic effects can be seen, but in constricted ear, cup ear, helical rim deformity ear and Ⅱ degree microtia, the effects are poor. The cure time of lop ear is short, while the cure time of prominent ear is long. The better effect can be acquired in the earlier non-invasive correction.

【Objective】 Thrombelastogram(TEG) was used to detect the blood clotting function of patients with esophageal cancer in each stage of perioperative period, so as to understand the change pattern of blood clotting function in patients with esophageal cancer during perioperative period, and to guide the postoperative anticoagulation or hemostasis treatment. 【Methods】 Sixty patients diagnosed with esophageal cancer who underwent surgical treatment between May 2017 and May 2019 in Jiangmen Central Hospital were selected as the experimental group, and 60 cases of healthy physical examination were selected as the normal control group. By contrasting with the normal control group, results of blood sample testing for the experimental group 1 day before, 1 day after operation, and the 7th day postoperative thrombosis elastic figure were used to analyze the change of the esophageal perioperative blood coagulation function. 【Results】 Compared with the control group before surgery, the TEG parameters R, K and LY30 decreased, and Angle, MA and CI increased, with statistically significant differences(P < 0.05). Compared with the normal control group after surgery, the R and K values of TEG parameters in the experimental group decreased significantly, while Angle, MA and CI values increased significantly, with statistically significant differences(P < 0.01), and LY30 values decreased, with statistically significant differences(P < 0.05). Compared with the experimental group before and after surgery, the TEG parameters R and K decreased, and the values of LY30, Angle, MA and CI increased, with no statistically significant difference(P > 0.05). Seven days after the operation and 1 day after the operation, the values of R and K of TEG decreased, and the values of MA and CI increased, with statistically significant differences(P < 0.05) . 【Conclusion】 All patients with esophageal cancer presented hypercoagulability before and after operation.Surgery and anesthesia did not significantly change the coagulation status of esophageal cancer. In the postoperative recovery process, the hypercoagulable state will be more obvious.

IG-105, N-(2,6-dimethoxypyridine-3-yl)-9-methylcarbazole-3-sulfonamide, a novel antimicrotubule agent, showed potent anticancer activity in a variety of human tumor cells in vitro and in vivo. In order to characterize the metabolism and the possible drug-drug interaction of IG-105, we carried out a series of experiments. Drug metabolizing enzymes involved in IG-105 metabolism were investigated by using pooled human liver microsomes (HLMs) and recombinant cytochrome P450 isoforms (rP450s) respectively. The possible metabolites were analyzed by liquid chromatography-orbitrap-mass spectrometry (LC-Orbitrap-MS). The inhibitory effect of IG-105 on main P450 enzymes was also evaluated. The results showed that IG-105 can be metabolized by a series of rP450s, including CYP1A2, CYP2B6, CYP2C9, CYP2C19, CYP2D6, CYP3A4 and CYP3A5, with the major contribution enzymes being CYP1A2, CYP2B6, CYP2C19, and CYP3A. Three metabolites (M1-M3) were identified and demethylation was the major phase I metabolic reaction for IG-105. IG-105 moderately inhibited CYP1A2, CYP2C9, CYP2C19, CYP2D6, and CYP3A enzyme activities with IC₅₀ values of 6.42, 23.64, 0.39, 1.4, and 3.14 μmol·L^-1, respectively. Since the biotransformation of IG-105 involves multiple enzymatic pathways, the compound is less likely to be a victim of a concomitantly used medicine which inhibits activity of one of the CYPs. However, as IG-105 showed medium to strong inhibition on CYP1A2, CYP2D6, CYP3A, and CYP2C19, caution is particularly needed when IG-105 is co-administrated with other anticancer drugs which are mainly metabolized by the above enzymes.

BACKGROUNDThe extended thymectomy for myasthenia gravis (MG) is currently available, but in 20% - 40% of the patients the results were not satisfactory. There are no ideal indicators forecasting surgical results before operation. The surface enhanced laser desorption ionization-time of flight-mass spectroscopy (SELDI-TOF-MS) is a currently new technique for detection of protein profiles, and some progresses have been made in cancer diagnosis and efficacy evaluation, but there is no report on efficacy forecasting of MG surgery. This study aimed to establish an efficacy prognosis model for forecasting the efficacy of surgery for MG by analysis of serum protein profiles of MG patients before surgery.

METHODSFifty-six MG patients 6 months after extended thymectomy were enrolled in the study. They were classified into effective or non-effective groups according to symptoms and medication. Their pre-operative blood samples were analyzed for protein profiles by the SELDI-TOF MS technique, and protein peaks were identified for establishment of the efficacy prognosis model of MG surgery. Additional 100 MG patients were subjected to model validation and their pre-operation protein profiles reviewed for post-operative results. The results were compared with those of the post-operative follow-up so as to validate the prognosis model.

RESULTSFor the model establishment, symptoms were improved in 33 patients and not improved in 18 patients, with an effective rate of 64.7%. Five (8.9%) patients were lost to follow-up. Within the molecular weight range of 1 000 to 20 000, 3 specific protein peaks were found to be significantly different between the effective and non-effective groups, ie M4110-76, M3394-58, and M1258-55. Using the efficacy prognosis model constructed with these data, the accuracy rate of classification was 87.9% for the effective group, and 83.3% for the non-effective group, with a total accuracy rate of 86.3%. For the model evaluation, 2 (8.9%) patients were lost to follow-up, 62 patients were effective and 36 were non- effective. By comparing with the real results of follow-up with 65 effective and 33 non-effective patients with an effective rate of 66.3%, the accuracy rate of prediction by the prognosis model was 86.2% for the effective group, and was 81.8% for the non-effective group with a total accuracy rate of 84.5%.

CONCLUSIONSBy protein profiles analysis of pre-operative blood samples taken from MG patients with the SELDI-TOF MS technique, protein peaks correlated with surgery efficacy in MG patients can be found for primary forecasting short-term efficacy of surgery for MG patients.

Adolescent ; Adult ; Blood Proteins ; analysis ; Child ; Female ; Humans ; Male ; Middle Aged ; Myasthenia Gravis ; diagnosis ; surgery ; Prognosis ; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization ; Thymectomy ; Young Adult

OBJECTIVETo determine whether -Taq I T/C and -Fok I C/T polymorphisms of vitamin D receptor (VDR) gene are associated with the familial aggregation of hepatitis B virus (HBV) infection.

METHODSBased on a population-based case-control family design, 288 family members from 27 case families and 230 family members from 27 control families were recruited. VDR gene polymorphisms were analyzed. VDR-Taq I T/C and VDR-Fok I C/T polymorphisms were examined by polymerase chain reaction-restriction fragment length polymorphism.

RESULTSThe frequency of VDR-Taq I TT genotype in the case families was significantly higher than that in the control families (P < 0.05) , however, the frequency of VDR-Fok I CC genotype in the case families was significantly higher than that in the control families (P < 0.05). The frequency of family members carriying Taq I T-Fok I C haplotype in the case families was significantly higher than that in the control families (OR = 1.67, P < 0.05), however, the frequency of family members carrying Taq I C-Fok I T haplotype in the case families was significantly lower than that in the control families (OR = 0. 24, P < 0.05). The similar results were found in the familial biological kinship relatives with any HBV-infected makers.

CONCLUSIONVDR-Taq I and -Fok I gene polymorphisms are likely to play a substantial role in HBsAg familial aggregation.

Case-Control Studies ; Female ; Gene Frequency ; Genetic Predisposition to Disease ; genetics ; Haplotypes ; Hepatitis B ; genetics ; Hepatitis B Surface Antigens ; genetics ; Humans ; Male ; Pedigree ; Polymerase Chain Reaction ; Polymorphism, Genetic ; Receptors, Calcitriol ; genetics