Objective To investigate the correlation of the expression of KAI1/CD82 and laminin receptor (LNR) in cholangiocarcinoma, and study its role in the invasion and metastasis of cholangiocarcinoma. Methods The expressions of KAI1/CD82 and LNR in 48 cholangiocarcinoma tissue samples were detected by SP immunohistochemistry, and their relationships with clinicopathological factors were analyzed. Results The positive expression rates of KAI1/CD82 and LNR in cholangiocarcinoma were 31% (15/48) and 54% (26/48), respectively. In highly differentiated cholangiocarcinoma, the positive expression rate of KAI1/CD82 was high (χ2=3.911, P<0.05), while that of the LNR was low (χ2=6.970, P<0.05). The positive expression rate of KAI1/CD82 in cholangiocarcinoma with metastasis was significantly lower than that in cholangiocarcinoma without metastasis (χ2=5.765, P<0.05), while the positive expression rate of LNR in cholangiocarcinoma with metastasis was significantly higher than that in cholangiocarcinoma without metastasis (χ2= 9.952, P<0.05). The expression level of KAI1/CD82 was negatively correlated with that of the LNR ( r = -0.462, P < 0.01 ). Conclusions The up-regulated expression of LNR in cholangiocarcinoma correlates with the decreased expression of KAI1/CD82, and plays an important role in the invasion and metastasis of cholangio-carcinoma.

Objective To explore the diagnosis and surgical treatment of pulmonary sequestration in adults. Methods Clinical data of 21 cases of pulmonary sequestration whose diagnosis was confirmed by surgical biopsy in our department from March 2009 to February 2016 were retrospectively analyzed. Divided the patients into the thoracotomy group (n=9) and the thoracoscope group (n=12) according to dif-ferent surgical methods, and compared the diagnosis and surgery of the two groups. Results Among the patients, 8 cases were diagnosed as pulmonary sequestration and the remaining 13 cases were misdiagnosed,with the misdiagnosis rate of 61. 9%. Intraoperative exploration dem-onstrated that the abnormal blood vessels were originated from thoracic aorta (n=14,66. 7%),abdominal aorta (n=4,19%),phrenic artery (n=3,14. 3%) and aortic arch (n=1,4. 8%), and there were 20 cases (95. 2%) of intralobar sequestration and 1 case (4. 8%) of ex-tralobar sequestration. Patients underwent thoracotomy and patients underwent video-assisted thoracoscopic surgery were of no significant differences in operative time (P=0. 104),blood loss (P=0. 209),chest tube duration (P=0. 511),drainage volume (P=0. 135) and postoperative hospital stay (P=0. 450). All the patients recovered well after surgery. Conclusion As pulmonary sequestration lacks specific clinical manifestations,missed diagnosis and misdiagnosis are very common in patients. Chest enhanced CT and CT angiography are effective diagnostic methods at present. Both thoracotomy and VATS can achieve good therapeutic effects.

Objective To compare the efficacy of endovascular interventional treatment and surgical clipping in posterior communicating artery aneurysm (PCoAA) patients with fetal-type posterior cerebral artery (fPCA).Methods The PCoAA patients with fPCA were enrolled.Their baseline clinical data were collected.The modified Rankin Scale (mRS) was used to assess the clinical outcomes at six months after procedure.The mRS score 0-2 was defined as good outcome.Results A total of 35 PCoAA patients with fPCA were enrolled into the study,23 were treated with interventional embolization therapy and 12 were treated with craniotomy clipping.There were no significant differences in age,gender,preoperative Fisher grade,Hunt-Hess grade,baseline GCS scores,and aneurysm typing between the 2 groups.The good outcome rate of the interventional embolization group at 6 months was higher than that of the surgical clipping group,but there was no significant difference (65.22％ vs.41.67％;P =0.282).Results The efficacy of PCoAA using interventional embolization therapy combined fPCA is almost the same as craniotomy clipping.

The compressive strength of the original bone tissue was tested, based on the raw human thigh bone, bovine bone, pig bone and goat bone. The four different bone-like apatites were prepared by calcining the raw bones at 800 degrees C for 8 hours to remove organic components. The comparison of composition and structure of bone-like apatite from different bone sources was carried out with a composition and structure test. The results indicated that the compressive strength of goat bone was similar to that of human thigh bone, reached (135.00 +/- 7.84) MPa; Infrared spectrum (IR), X-ray diffraction (XRD) analysis results showed that the bone-like apatite from goat bone was much closer to the structure and phase composition of bone-like apatite of human bones. Inductively Coupled Plasma (ICP) test results showed that the content of trace elements of bone-like apatite from goat bone was closer to that of apatite of human bone. Energy Dispersive Spectrometer (EDS) results showed that the Ca/P value of bone-like apatite from goat bone was also close to that of human bone, ranged to 1.73 +/- 0.033. Scanning electron microscopy (SEM) patterns indicated that the macrographs of the apatite from human bone and that of goat bone were much similar to each other. Considering all the results above, it could be concluded that the goat bone-like apatite is much similar to that of human bone. It can be used as a potential natural bioceramic material in terms of material properties.
Animals ; Apatites ; chemistry ; Biomechanical Phenomena ; Bone Substitutes ; chemistry ; Bone and Bones ; physiology ; Cattle ; Compressive Strength ; Goats ; Humans ; Microscopy, Electron, Scanning ; Swine ; X-Ray Diffraction

Objective To investigate the promotion effect of human transcriptional positive cofactor 4 (PC4) overexpression on lymphatic metastasis in lung adenocarcinoma .Methods 96 samples of lung adenocarcinoma tissue were collected .The immuno‐histochemistry(IHC) and real‐time quantitative polymerase chain reaction (qRT‐PCR) were adopted for detecting the expression levels of PC4 protein and mRNA .The correlation of PC4 expression with lymphatic metastasis and TNM stage was analyzed .Re‐sults The expression of PC4 protein was positively correlated mRNA in lung adenocarcinoma (r=0 .63 ,P<0 .01);the expression of PC4 protein was positively correlated with lymph node metastasis (χ2 =8 .29 ,P<0 .01) and TNM stage (χ2 =4 .71 ,P<0 .05);the expression of PC4 mRNA was also positively correlated with lymph node metastasis (χ2 = 8 .40 ,P< 0 .01) and TNM stage (χ2 =5 .10 ,P<0 .05) .Conclusion PC4 overexpression is found to be closely associated with the lymph node metastasis and TNM stage .PC4 may facilitate the lymph node metastasis of lung adenocarcinoma .

Objective:To compare the short-term efficacy of Billroth Ⅱ+Braun anasto-mosis versus Roux-en-Y anastomosis in totally three-dimensional (3D) laparoscopic distal gastrectomy.Methods:The retrospective cohort study was conducted. The clinicopathological data of 140 patients with gastric cancer who were admitted to the First Medical Center of Chinese PLA General Hospital from January 2016 to January 2020 were collected. There were 105 males and 35 females, aged from 23 to 84 years, with a median age of 55 years. Of the 140 patients, 54 patients undergoing totally 3D laparoscopic distal gastrectomy with Billroth Ⅱ+Braun anastomosis were allocated into Billroth Ⅱ+Braun group, and 86 patients undergoing totally 3D laparoscopic distal gastrectomy with Roux-en-Y anastomosis were allocated into Roux-en-Y group, respectively. Observation indicators: (1) surgical situations; (2) postoperative situations; (3) follow-up. Follow-up using outpatient examination and telephone interview was conducted to detect remnant gastritis and its severity, bile reflux, reflux esophagitis in the postoperative 3 months up to April 2020. Measurement data with normal distribution were represented as Mean± SD, and comparison between groups was analyzed using the t test. Count data were described as absolute numbers or percentages, and comparison between groups was analyzed using the chi-square test or Fisher exact probability. Comparison of ordinal data was analyzed using the Mann-Whitney U test. Results:(1) Surgical situations: 140 patients underwent totally 3D laparoscopic distal gastrectomy. The operation time, cases with volume of intraoperative blood loss <50 mL, 50 to 200 mL or >200 mL, the number of lymph node dissected were (233±39)minutes,15, 35, 4, 30±13 for the Billroth Ⅱ +Braun group , respectively, versus (240±52)minutes,25, 51, 10, 27±10 for the Roux-en-Y group, showing no significant difference between the two groups ( t=0.856， χ2=0.774， t=1.518， P>0.05). (2) Postoperative situations: cases with drainage tube, time to postoperative first flatus, cases with postoperative grade Ⅱ, Ⅲ, Ⅳ, Ⅴ complications, cases with postoperative complications, cases with postoperative severe complications, duration of postoperative hospital stay, surgery cost and total hospitalization cost of the Billroth Ⅱ+Braun group were 38, (3.5±0.8)days,4, 1, 0, 0, 5, 1, (9.0±5.0)days, (3.8±1.2)×10 4 yuan and (9.7±2.1)×10 4 yuan, respectively. The above indicators of the Roux-en-Y group were 59, (3.7±1.0)days, 9, 1, 0, 1, 11, 2, (9.0±4.0)days, (4.3±1.0)×10 4 yuan and (9.2±2.1)×10 4 yuan, respectively. There was a significant difference in the surgery cost between the two groups ( t=2.453, P<0.05), while there was no significant difference in cases with drainage tube, time to postoperative first flatus, cases with postoperative grade Ⅱ, Ⅲ, Ⅳ, Ⅴ complications, cases with postoperative complications, duration of postoperative hospital stay or total hospitalization cost between the two groups ( χ2=0.049, t=?1.339, Z=0.000, χ2=0.409, t=0.197, 1.383, P>0.05). There was also no significant difference in cases with postoperative severe complications between the two groups ( P>0.05).(3) Follow-up: 134 of 140 patients received the follow-up, including 52 cases in the Billroth Ⅱ+Braun group and 82 cases in the Roux-en-Y group. Results of follow-up within postoperative 3 months showed that the incidence rates of remnant gastritis, bile reflux, reflux esophagitis were 61.5%(32/52), 38.5%(20/52), 26.9%(14/52) for the Billroth Ⅱ+Braun group, respectively, versus 41.5%(34/82), 22.0%(18/82), 12.2%(10/82) for the Roux-en-Y group, showing significant differences between the two groups ( χ2=5.131, 4.270, 4.695, P<0.05). Cases with grade 0,Ⅰ,Ⅱ, Ⅲ, Ⅳ residual food were 42, 3, 5, 2,0 for the Billroth Ⅱ+Braun group, versus 67, 9, 1, 5,0 for the Roux-en-Y group, showing no significant difference between the two groups ( Z=?0.156, P>0.05). Cases with minimal lesion, grade A, grade B gastritis (severity of gastritis) were 6, 5, 3 for the Billroth Ⅱ+Braun group, versus 8, 2, 0 for the Roux-en-Y group, showing no significant difference between the two groups ( Z=?1.468, P>0.05). Conclusions:It is safe and feasible to operate Billroth Ⅱ+Braun or Roux-en-Y anastomosis in totally 3D laparoscopic distal gastrectomy. Billroth Ⅱ+Braun anastomosis can reduce the surgical cost. Roux-en-Y anastomosis has advantages in reducing the incidence of reflux esophagitis, bile reflux and reflux gastritis.

OBJECTIVE: To explore the molecular basis for an individual with Ax28 phenotype of the ABO subtype. METHODS: The ABO group antigens on red blood cells of the proband were identified by monoclonal antibodies. The ABO antibody in serum was detected by standard A, B, O cells. Exons 1 to 7 of the ABO gene were respectively amplified by PCR and directly sequenced. Amplicons for exons 5 to 7 were also sequenced after cloning. RESULTS: Weakened A antigen was detected on red blood cells from the proband. Both anti-A and anti-B antibodies were detected in the serum. Heterozygous 261G/del was detected in exon 6, while heterozygous 467C/T and 830T/C were detected in exon 7 by direct DNA sequencing. After cloning and sequencing, two alleles (O01 and Ax28) were obtained. Compared with A102, the sequence of Ax28 contained one nucleotide changes (T to C) at position 830, which resulted in amino acid change (Val to Ala) at position 277. CONCLUSION The novel mutation c.830T>C of the galactosaminyltransferase gene may give rise to the Ax28 phenotype.
ABO Blood-Group System ; genetics ; Alleles ; Amino Acid Substitution ; Exons ; Galactosyltransferases ; genetics ; Genotype ; Humans ; Phenotype ; Polymorphism, Single Nucleotide ; Sequence Deletion

Objective:To compare short-term efficacy of robotic versus 3D laparoscopic-assisted D2 radical distal gastrectomy in gastric cancerpatients and those with different body mass index (BMI).Method:A retrospective cohort study was performed. Inclusion criteria:(1) gastric cancer proved by preoperative pathological results and tumor location was suitable for D2 radical distal gastrectomy; (2) no distal metastases such as in liver, kidney or abdominal cavity, and no direct invasion to the pancreas or colon on preoperative imaging; (3) postoperative pTNM stage ranged from I to III; (4) no conversion to open surgery or change of surgical procedure during operation; (5) complete clinicopathological data. Patients with severe chronic diseases, other malignant tumors, tumor invasion of other organs or distant metastases, benign gastric tumors, gastrointestinal stromal tumors and recurrent gastric cancer were excluded. According to the above criteria, 531 patients who underwent robotic or 3D laparoscopic-assisted distal gastrectomy at the General Surgery Department of Chinese PLA General Hospital from January 2016 to December 2019 were enrolled. Among them, 344 patients underwent 3D laparoscopic-assisted distal gastrectomy (3D-LADG group), including 250 males, 94 females, 66 cases (19.2%) with a BMI ≥ 25 kg/m 2, and 278 cases (80.8%) with a BMI < 25 kg/m 2, and 187 patients underwent robotic-assisted distal gastrectomy (RADG group), including 122 males, 65 females, 69 cases (36.9%) with a BMI≥25 kg/m 2 and 118 cases (63.1%) with a BMI < 25kg/m 2. There were no significant differences in baseline characteristics between the two groups (all P > 0.05). Operative indicators, postoperative recovery, pathological characteristics and complication rate were compared between the two groups. Subgroup analysis stratified BMI was also performed. Results:Compared with RADG group, 3D-LADG group presented more harvested lymph nodes (29.1±12.4 vs. 25.2±9.0, t=4.238, P<0.001), shorter postoperative hospital stay [8.0 (7.0 to 10.0) days vs. 10.0 (9.0 to 11.0) days, Z=-6.205, P<0.001], less operative cost [(3.6×10 4±1.1×10 4) yuan vs. (6.2×10 4±3.5×10 4) yuan, t=-9.727, P<0.001], less cost of hospitalization [8.6×10 4(7.5×10 4 to 10.0×10 4) yuan vs. 12.8×10 4(11.7×10 4 to 14.1×10 4) yuan, Z=-15.997, P<0.001] and longer first flatus time [(3.9±1.0) days vs. (3.4±1.2) days, t=4.271, P<0.001], whose differences were all statistically significant (all P<0.05). While there were no statistically significant differences in operation time, intraoperative blood loss, overall complication rate [10.8%(37/344) vs. 12.8%(24/187), χ 2=0.515, P=0.473] and severe complications rate [2.0%(7/344) vs. 3.2%(6/187), χ 2=0.294, P=0.588] between 3D-LADG group and RADG group (all P>0.05). In BMI<25 kg/m 2 group, propensity score matching (PSM) was used to reduce bias of baseline characteristics. After PSM, 3D-LADG group presented higher proportion of intraoperative blood loss <50 ml [26.7% (31/116) vs. 8.6% (10/116), χ 2=13.065, P<0.001], more harvested lymph nodes [30.3±12.2 vs. 25.3±9.5, t=-3.192, P=0.002] and shorter postoperative hospital stay [9.0 (7.0 to 10.0) days vs. 10.0 (9.0 to 11.0) days, Z=-4.275, P<0.001] compared with RADG group, while other perioperative indicators showed no statistically significant differences between the two groups (all P>0.05). In BMI≥25 kg/m 2 group, 3D-LADG group presented higher proportion of intraoperative blood loss >200 ml [18.2% (12/66) vs. 1.4% (1/69), χ 2=10.853, P=0.001] and shorter postoperative hospital stay [8.0 (6.0 to 10.0) days vs. 9.0 (8.0 to 10.5) days, Z=-3.039, P=0.002] compared with RADG group, while other perioperative indicators also showed no statistically significant differences between the two groups (all P>0.05). Conclusion:It is safe and feasible to perform 3D-LADG and RADG for patients with gastric cancer. The short-term efficacy of both is similar.

Objective:To compare short-term efficacy of robotic versus 3D laparoscopic-assisted D2 radical distal gastrectomy in gastric cancerpatients and those with different body mass index (BMI).Method:A retrospective cohort study was performed. Inclusion criteria:(1) gastric cancer proved by preoperative pathological results and tumor location was suitable for D2 radical distal gastrectomy; (2) no distal metastases such as in liver, kidney or abdominal cavity, and no direct invasion to the pancreas or colon on preoperative imaging; (3) postoperative pTNM stage ranged from I to III; (4) no conversion to open surgery or change of surgical procedure during operation; (5) complete clinicopathological data. Patients with severe chronic diseases, other malignant tumors, tumor invasion of other organs or distant metastases, benign gastric tumors, gastrointestinal stromal tumors and recurrent gastric cancer were excluded. According to the above criteria, 531 patients who underwent robotic or 3D laparoscopic-assisted distal gastrectomy at the General Surgery Department of Chinese PLA General Hospital from January 2016 to December 2019 were enrolled. Among them, 344 patients underwent 3D laparoscopic-assisted distal gastrectomy (3D-LADG group), including 250 males, 94 females, 66 cases (19.2%) with a BMI ≥ 25 kg/m 2, and 278 cases (80.8%) with a BMI < 25 kg/m 2, and 187 patients underwent robotic-assisted distal gastrectomy (RADG group), including 122 males, 65 females, 69 cases (36.9%) with a BMI≥25 kg/m 2 and 118 cases (63.1%) with a BMI < 25kg/m 2. There were no significant differences in baseline characteristics between the two groups (all P > 0.05). Operative indicators, postoperative recovery, pathological characteristics and complication rate were compared between the two groups. Subgroup analysis stratified BMI was also performed. Results:Compared with RADG group, 3D-LADG group presented more harvested lymph nodes (29.1±12.4 vs. 25.2±9.0, t=4.238, P<0.001), shorter postoperative hospital stay [8.0 (7.0 to 10.0) days vs. 10.0 (9.0 to 11.0) days, Z=-6.205, P<0.001], less operative cost [(3.6×10 4±1.1×10 4) yuan vs. (6.2×10 4±3.5×10 4) yuan, t=-9.727, P<0.001], less cost of hospitalization [8.6×10 4(7.5×10 4 to 10.0×10 4) yuan vs. 12.8×10 4(11.7×10 4 to 14.1×10 4) yuan, Z=-15.997, P<0.001] and longer first flatus time [(3.9±1.0) days vs. (3.4±1.2) days, t=4.271, P<0.001], whose differences were all statistically significant (all P<0.05). While there were no statistically significant differences in operation time, intraoperative blood loss, overall complication rate [10.8%(37/344) vs. 12.8%(24/187), χ 2=0.515, P=0.473] and severe complications rate [2.0%(7/344) vs. 3.2%(6/187), χ 2=0.294, P=0.588] between 3D-LADG group and RADG group (all P>0.05). In BMI<25 kg/m 2 group, propensity score matching (PSM) was used to reduce bias of baseline characteristics. After PSM, 3D-LADG group presented higher proportion of intraoperative blood loss <50 ml [26.7% (31/116) vs. 8.6% (10/116), χ 2=13.065, P<0.001], more harvested lymph nodes [30.3±12.2 vs. 25.3±9.5, t=-3.192, P=0.002] and shorter postoperative hospital stay [9.0 (7.0 to 10.0) days vs. 10.0 (9.0 to 11.0) days, Z=-4.275, P<0.001] compared with RADG group, while other perioperative indicators showed no statistically significant differences between the two groups (all P>0.05). In BMI≥25 kg/m 2 group, 3D-LADG group presented higher proportion of intraoperative blood loss >200 ml [18.2% (12/66) vs. 1.4% (1/69), χ 2=10.853, P=0.001] and shorter postoperative hospital stay [8.0 (6.0 to 10.0) days vs. 9.0 (8.0 to 10.5) days, Z=-3.039, P=0.002] compared with RADG group, while other perioperative indicators also showed no statistically significant differences between the two groups (all P>0.05). Conclusion:It is safe and feasible to perform 3D-LADG and RADG for patients with gastric cancer. The short-term efficacy of both is similar.

Objective:To investigate the etiology of epilepsy onset before 6 months old and improve clinical understanding.Methods:The medical history, electroencephalogram, brain imaging, genetic examination and other clinical data of 340 patients who were diagnosed with epilepsy with onset under 6 months of age and were hospitalized in the Department of Neurology, Beijing Children′s Hospital, Capital Medical University between January 2017 and December 2018 were retrospectively analyzed. Rank sum test was used to compare the ages of onset of different etiologic groups.Results:Of the 340 patients, 196 were males and 144 were females. The age of onset was 90.5 (48.0, 135.5) days. In the 250 (73.5%) underwent genetic test, 103 (41.2%) had pathogenic or likely pathogenic variants, involving 43 single gene variants and 2 chromosomal abnormalities. Seventy-nine patients (23.2%) had genetic etiology, 66 (19.4%) had structural etiology, 19 (5.6%) had metabolic etiology, 13 (3.8%) had multiple etiologies, and 163 (47.9%) had unknown etiology. In the 79 cases with genetic etiology, 30 single gene variants were detected, including 19 cases of PRRT2, 10 cases of KCNQ2, 7 cases of SCN1A, 6 cases of SCN2A, 6 cases of STXBP1, 5 cases of CDKL5, 2 cases of ARX, and 1 case of each of 23 gene variants. Two cases had chromosomal abnormalities which were 21-trisomy and 16p11.2 microdeletion syndrome respectively. Among the 66 cases with structural etiologies, 37 cases had acquired factors such as perinatal brain injury, 28 cases had congenital factors such as cortical malformation and 1 case was perinatal brain injury combined megalencephaly. The onset age of genetic etiology was 95 (26, 128) days, that of structural etiology was 90 (58, 30) days, and that of metabolic etiology was 57 (30, 90) days. The onset age of metabolic etiology was earlier than that of structural etiology ( U=436.500, P=0.044). Conclusions:Genetic etiology is the most common defined etiology of infants with early-onset epilepsy aged 0-6 months, and there are certain differences in the age of onset between different etiologies. Proper application of genetic test is helpful to identify the etiology and guide treatment.