Objective To investigate the clinical efficacy and safety of two chemotherapy regimens based on oxaliplatin combined with TS-1 or capecitabine in the treatment of advanced colon cancer.Methods 53 advanced colon cancer patients were involved in this study.26 patients were given the regimen of SOX:oxaliplatin (130 mg/m2) was administered intravenously in three hours on day 1,while S-1 (40 mg/m2) was administered orally twice daily for 14 consecutive days.27 patients were given the regimen of XELOX:oxaliplatin capecitabine was administered intravenously in three hours on day 1,while capecitabine (1000 mg/m2)was administered orally twice daily for 14 consecutive days.The regimens were repeated every 3 weeks.The efficacy and toxicy were evaluated after 2 cycles teatment.Results All the 53 patients were eligible for enrollment and the patients were appreciable for efficacy and toxicy.The objective response rates (RR) were 46.1％ (12/26) and 48.1％ (13/27) in the SOX group and XELOX group respectively.The disease control rates (DCR) were 76.9 ％ (20/26) and 74.1％ (20/27).There was no significant difference in RR.The objective side effects associated with the two regimens were bone marrow suppressive,digestive system reaction (diarrhea or vomiting),peripheral neuropathy and hand-foot syndrome on mostly graded 1 or 2.Compared to the XELOX group,nausea vomiting of the SOX group were higher (x2 =4.462,P =0.035),but diarrhea and hand-foot syndrome of XELOX group was obviously higher than that of SOX group [44.4 ％ (12/27) vs.19.2 ％ (5/26) (x2 =4.366,P =0.001),44.4 ％ (12/27) vs.3.8 ％ (1/26) (x2 =11.699,P=0.037)].Conclusion There are no significant difference in the efficacy of the two chemotherapy regimens and the side toxicities are all well tolerable.

Objective To study the effect of high frequency stimulation (HFS) in pedunculopontine nucleus (PPN) on the neuronal activities of globus pallidus internus (Gpi) in Parkinson’s disease (PD) model rats, and the mechanisms there-of. Methods Seventy male Sprague-Dawley rats were divided into two groups, control group (n=30) and PD model group (n=40). PD rat model was established by the injection of 6-OHDA into substantia nigra pars compacta (SNc) on the right side of the brain with stereotactic technique. Electrophysiological recordings were made in anaesthetized rats to investigate the ef-fects of HFS-PPN on the firing rate of the GPi neurons. Brain microdialysis combined with high-performance liquid chroma-tography was applied to detect glutamate (Glu) andγ-aminobutyric acid (GABA) levels in GPi. Results HFS-PPN caused an excitatory reaction of the majority of neurons recorded in the GPi in PD model group and control group. The mean firing rate of GPi excited neurons was significantly increased (P﹤0.01). The levels of Glu were reduced under HFS-PPN and the levels of GABA were not affected (P>0.05).Conclusion HFS-PPN heightened the electrical activity of GPi neurons and re-duced the level of Glu. These excitatory effects were probably realized by PPN-GPi direct path or other indirect path.

A case of a 47-year-old female patient who had a severe headache for 2 days was reported. Spontaneous subarachnoid hemorrhage (SAH, hunt-Hess classification Ⅱ level)-anterior communicating aneurysm rupture was diagnosed by brain CT and digital subtraction angiography (DSA) examination.Intravascular interventional aneurysm embolization was performed, and the patient appeared progressive limb weakness 5 days after operation. Physical examination revealed grade Ⅱ upper limb muscle strength and grade Ⅰ lower limb muscle strength. The muscle tone of the extremities was decreased,and the tendon reflex disappeared. The pinprick pain was decreased below the double wrist joints and the ankle joints. After neuroelectrophysiology test and cerebrospinal fluid assay, the patient was diagnosed as Guillain-Barré syndrome associated with subarachnoid hemorrhagic aneurysm embolization.

Objective To compare the clinical features of cytomegalovirus (CMV) infection and CMV disease after allogeneic hematopoietic stem-cell transplantation (HSCT) from HLA haploidentical related doors vs.HLA-matched sibling donors.Methods A total of 327 patients who received allogeneic HSCT from Jan.2011 to Dec.2011 were enrolled.There were 312 patients who had complete serological data before HSCT including 216 cases of HLA haploidentical related HSCT and 96 cases of HLA-matched sibling HSCT.Monitoring of CMV antigenemia was performed by using real-time quantitative (RQ) PCR after transplantation.Risk factors were compared by univariate and multivariate analysis.Results The cumulative incidence of CMV infection and CMV disease was (80.1 ± 2.7) ％ and (8.7 ± 2.0) ％ in HLA haploiddentical HSCT group,and (21.1 ± 4.9) ％ and 0 in HLA-matched sibling HSCT group respectively,and the difference was statistically significant between the two groups (P＜0.01).Univariate analysis revealed that HLA haploidentical related HSCT,less than 20 years of age,high risk disease,CMV-IgG serum positivity in patients or donors,acute graft-versus-host disease (aGVHD),EB viremia,and hemorrhagic cystitis were the risk factors of CMV infection.HLA haploidentical related SCT and hemorrhagic cystitis were the risk factors for CMV disease.Multivariate analysis showed that patients less than 20 years of age had a significantly high incidence of CMV infection.Patients from HLA-matched sibling HSCT,low risk disease,aGVHD,hemorrhagic cystitis had a significantly low incidence of CMV infection.Conclusion Compared with patients receiving HLA-matched sibling HSCT,those who received HLA haploidentical related HSCT had significantly high incidence of CMV infection and CMV disease,which were correlated with incidence of hemorrhagic cystitis.

Objective Our purpose is to investigate the expression of natriuretic peptide receptor A (NPR-A) in the retina and to understand the NPR-A’ s functions during the mouse development .Methods Mice eyes were harvested from E16 ( embryonic day 16 ) to P90 ( postnatal day 90 ) . Total of 127 eyes were used in the study . Immunohistochemistries of NPR-A were carried out .Results During development , NPR-A was widely expressed in the retinal neurons .In the outer nuclear layer , NPR-A began to appear in the inner and outer projections of cone and rod cells at P7, but decreased at P14.From P30 afterward, it continued to express weakly .In the inner nuclear layer , NPR-A expressed in the dendrites of bipolar cells weakly from P 7 to adulthood , whereas no expression in horizontal cells .In the ganglion cell layer, NPR-A started highly to express in the ganglion cell bodies at E 16, and in the meantime, in the nerve fiber layer , ganglion cell axons , NPR-A was expressed highly from embryonic to adult .In the inner and outer plexiform layers, NPR-A was highly expressed at P14, but decreased gradually after P30.In addition, NPR-A also widely expressed in the inner protrusions of Müller cells.Conclusion NPR-A participates in the development of the retina , and may be the key molecule in the developing retinal neurons .Moreover, it plays an important regulatory role in the functional activity of Müller cells .

Objective: The present study evaluated postoperative reactions in adjacent teeth after the extraction of lower-level horizontal-impacted mandibular third molars using a T-shaped splitting method. Methods: A total of 101 patients with lower-level horizontal impaction of mandibular third molars were selected and randomly divided into two groups. The impacted mandibular third molar was extracted using a T-shaped splitting method in group A （56 cases）, and the traditional two-section method was used in group B （45 cases）。 Postoperative reactions, including temperature sensitivity, percussion pain and mobility in the adjacent teeth, were compared between the 2 groups at 1-week, 2-week, and 1-month follow-up visits. The SPSS 13.0 software package was used for the statistical analysis. Results : The postoperative reactions of temperature sensitivity （χ21w= 11.81, χ22w = 17.43, P < 0.05）, percussion pain （χ21w = 8.70, χ22w = 4.75, P < 0.05） and mobility （χ21w = 4.50, χ22w = 7.10, P < 0.05） in adjacent teeth in group A were significantly less than those in group B at the 1-week and 2-week follow-up visits. The temperature sensitivity in adjacent teeth in group A was significantly less than that in group B at the 1-month follow-up visit （χ2 = 7.10, P < 0.05）, but percussion pain and mobility in adjacent teeth disappeared in both groups. Conclusion The T-shaped splitting method for the extraction of mandibular lower-level horizontal impacted third molars can reduce the postoperative reactions in adjacent teeth.

Objective:To investigate the effect of ultrasound measurement of optic nerve sheath diameter (ONSD) in adult patients with elevated intracranial pressure (ICP).Method:From June 2017 to March 2020, A total of 64 patients (32 patients with elevated ICP and 32 patients with normal ICP) were placed with invasive intracranial pressure monitoring probe in Beijing Pinggu Hospital. Their ICP and ONSD were continuously monitored. Thirty-two healthy volunteers were recruited as control group to check ONSD. The correlation between ONSD and ICP, and the changes of ICP and ONSD after osmotic therapy were observed.Results:The ONSD in ICP increased group was significantly higher than that in normal ICP group: (5.77 ± 0.3) mm vs. (5.01 ± 0.1) mm, with statistical difference ( P<0.05), and there was a positive correlation between ONSD and ICP. There was no significant difference in ONSD between normal ICP group and control group ( P>0.05). Conclusions:Ultrasound monitoring ONSD can reflect the level of ICP and evaluate the effect of osmotic therapy and the prognosis of patients. Bedside ultrasound examination of optic nerve sheath diameter could be used to judge ICP and to evaluate the curative effect of osmotic therapy, with high clinical application value.

Objective To analyze the correlation between detection of influenza pathogenic subtypes and epidemic situation in Hefei City during the surveillance years of 2015-2021, and to provide references for developing influenza prevention and control strategies. Methods The relevant data of influenza-like illness (ILI) surveillance, influenza etiology, and outbreak/cluster outbreaks reported from influenza surveillance sentinel hospitals in Hefei City from 2015 to 2021 in the China Influenza Surveillance Information System were analyzed. The statistical analysis was carried out. Results A total of 3 332 553 outpatient and emergency visits in 2 sentinel hospitals were reported in Hefei City from 2015 to 2021, of which 139,082 were ILI cases, accounting for 4.17%. The monthly proportion ranged from 1.60% to 7.15%. A total of 14 663 ILI specimens were submitted for detection, the submission rate was 10.54%, and the positive rate of influenza virus detection was 11.30%. There was no correlation between the proportion of monthly influenza like cases and the detection rate (r_s=0.176, P=0.107). The composition ratio of each subtype of influenza virus varied greatly, showing diversified seasonality, and the epidemic strains changed constantly. The Victoria subtype (BV subtype) was dominant (40.21%). There was a moderate correlation between the positive rate of ILI in sentinel hospitals and the number of outbreaks per month (r_s=0.696, P=0.000). There was a strong correlation between the monthly number of outbreaks and the detection rate (r_ss=0.696, P=0.000). There was a strong correlation between influenza A virus H3 subtype and BV subtype (r_{s -H3}=0.686, P=0.030; r_{s -BV}=0.632, P=0.000). There was a moderate correlation between the new A1 subtype and B Yamagata subtype (r_{s -new A H1}=0.481, P=0.000 0; r_{s -BY}=0.515, P=0.000). Conclusion There are two epidemic peaks in spring and winter in Hefei. Influenza subtypes are diverse. The results of ILI etiology can predict the outbreaks of different subtypes of influenza. Prediction and surveillance should be used for influenza control and outbreak management in a timely manner.

The integration of artificial intelligence into the medical field is developing rapidly and has achieved ground-breaking advances in the diagnosis, treatment, and efficacy evaluation of imaging medicine. This article reviews the research advances in artificial intelligence in imaging diagnosis of hepatocellular carcinoma and its performance in evaluating treatment outcome and predicting prognosis in combination with clinical features and looks forward to how artificial intelligence can be better used in the practice of hepatocellular carcinoma imaging in the era of growing clinical needs and rapid advances in diagnosis and treatment techniques.