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Current Status and Prospect of Surgical Management of Pancreatic Cancer

生物活性因子治疗椎间盘退变性疾病的研究进展

生物活性因子治疗是椎间盘退变性疾病生物治疗的重要组成部分，包括各类生长因子、炎性因子拮抗因子、生物酶类抑制剂及细胞内调节因子等，可通过不同途径对椎间盘内细胞功能进行调控。常用于椎间盘退变治疗的生物活性因子包括骨形态发生蛋白、转化生长因子 β、促有丝分裂因子和富血小板血浆等。生物活性因子发挥作用需一定的椎间盘微环境，即相当数量的有正常功能状态的椎间盘细胞、足够的营养支持及供氧条件。目前生物活性因子的应用仍存在可导致椎间盘骨化、软骨化等副作用，且缺少稳定可靠的给药途径。探索新的、有效的生物活性因子和其转化应用研究，以及不同生物治疗策略与生物活性因子的联合使用，是生物活性因子治疗椎间盘退变性疾病的重点和研究方向。该文对生物活性因子治疗椎间盘退变性疾病的研究进行了综述。

Short-term effectiveness of anterior and middle columns repair and reconstruction with whole autogenous spinous process-laminar bone through posterior approach in thoracolumbar tuberculosis

Objective To investigate the short-term effectiveness of the anterior and middle columns in thoracolumbar tuberculosis reconstructed with whole autogenous spinous process-laminar bone through posterior approach. Methods The retrospective study included 78 patients with thoracolumbar tuberculosis who underwent posterior approach surgery and anterior and middle column bone graft reconstruction between January 2012 and May 2023. Based on the type of autogenous bone graft used, patients were divided into group A (whole autogenous spinous process-laminar bone graft, 38 cases) and group B (autogenous structural iliac bone graft, 40 cases). There was no significant difference of baseline data, such as age, gender, disease duration, involved segment of spinal tuberculosis, and preoperative erythrocyte sedimentation rate (ESR), C reactive protein (CRP), Oswestry disability index (ODI), visual analogue scale (VAS) score, the American Spinal Injury Association (ASIA) grade, segmental kyphotic angle, and intervertebral height between the two groups (P>0.05). The operation time, intraoperative blood loss, postoperative drainage, hospital stays, ESR, CRP, VAS score, ODI, bone fusion time, ASIA grade for neurological status valuation, postoperative complications, change of segmental kyphotic angle, change of intervertebral height were recorded and compared between the two groups. Results The operation time in group A was significantly shorter than that in group B (P<0.05); there was no significant difference in intraoperative blood loss, postoperative drainage, and hospital stays between the two groups (P>0.05). All patients in the two groups were followed up 14-110 months (mean, 64.1 months); there was no significant difference in the follow-up time between the two groups (P>0.05). The ESR, CRP, ODI, and VAS score at each time point after operation in both groups significantly improved when compared with those before operation, and further improved with the extension of time, the differences were significant (P<0.05). There was no significant difference between the two groups (P>0.05) except that the VAS score of group A was significantly better than that of group B at 3 days after operation (P<0.05). There was no significant difference in fusion time between the two groups (P>0.05). The neurological function of most patients improved after operation, and there was no significant difference in ASIA grade between the two groups at last follow-up (P>0.05). There was no significant difference in segmental kyphosis angle and intervertebral height between the two groups at each time point (P>0.05), and no significant difference in segmental kyphosis angle, intervertebral height correction and loss were found between the two groups (P>0.05). In group A, there was 1 case of incision fat liquefaction and 1 case of incision infection; in group B, there was 1 case of deep venous thrombosis, 2 cases of pleural effusion, and 10 cases of pain in bone harvesting area; in both groups, there were 2 cases of gout caused by hyperuricemia. There was a significant difference in the incidence of pain in bone harvesting area between the two groups (P<0.05), and there was no significant difference in the incidence of other complications between the two groups (P>0.05). ConclusionWhole autogenous spinous process-laminar bone grafting is equivalent to structural iliac bone graft in reconstruction of the anterior and middle columns in thoracolumbar tuberculosis through posterior approach, effectively supporting the stability of the anterior and middle columns of the spine, while resulting in shorter operation time and less postoperative pain in bone harvesting area.

Short-term effectiveness of floating island laminectomy surgery for thoracic spinal stenosis and myelopathy caused by ossification of ligamentum flavum

Objective To explore short-term effectiveness of floating island laminectomy surgery in treating thoracic spinal stenosis and myelopathy caused by ossification of the ligamentum flavum. Methods A total of 31 patients with thoracic spinal stenosis and myelopathy caused by ossification of the ligamentum flavum between January 2019 and April 2022 were managed with floating island laminectomy surgery. The patients comprised 17 males and 14 females, aged between 36 and 78 years, with an average of 55.9 years. The duration of symptoms of spinal cord compression ranged from 3 to 62 months (mean, 27.2 months). The lesions affected T1-6 in 4 cases and T7-12 in 27 cases. The preoperative neurological function score from the modified Japanese Orthopaedic Association (mJOA) was 4.7±0.6. Surgical duration, intraoperative blood loss, and complications were recorded. The thoracic MRI was conducted to reassess the degree of spinal cord compression and decompression after operation. The mJOA score was employed to evaluate the neurological function and calculate the recovery rate at 12 months after operation. Results The surgical duration ranged from 122 to 325 minutes, with an average of 204.5 minutes. The intraoperative blood loss ranged from 150 to 800 mL (mean, 404.8 mL). All incisions healed by first intention after operation. All patients were followed up 12-14 months, with an average of 12.5 months. The patients’ symptoms, including lower limb weakness, gait disorders, and pain, significantly improved. The mJOA scores after operation significantly increased when compared with preoperative scores (P<0.05), gradually improving with time, with significant differences observed among 1, 3, and 6 months (P<0.05). The recovery rate at 12 months was 69.76%±11.38%, with 10 cases exhibiting excellent neurological function and 21 cases showing good. During the procedure, there were 3 cases of dural tear and 1 case of dural defect. Postoperatively, there were 2 cases of cerebrospinal fluid leakage. No aggravated nerve damage, recurrence of ligamentum flavum ossification, or postoperative thoracic deformity occurred. ConclusionThe floating island laminectomy surgery is safe for treating thoracic spinal stenosis and myelopathy caused by ossification of the ligamentum flavum, effectively preventing the exacerbation of neurological symptoms. Early improvement and recovery of neurological function are achieved.

Laparoscopic spleen-preserving distal pancreatectomy: a report of 17 cases

Objective To evaluate feasibility and clinical application value of laparoscopic spleen-preserving distal pancreatectomy (LSPDP). Method The clinical data of 17 patients underwent LSPDP from January 2015 to June 2017 in this hospital were retrospectively analyzed. Results The LSPDP was successfully completed in the 17 cases, with Kimura procedure and Warshaw procedure were performed in the 12 cases and 5 cases, respectively. The operative time was (218±60) min, the intraoperative blood loss was (136±114) mL, the time to get out of bed after surgery was (1.4±0.6) d, the postoperative fasting time was (2.0±0.8) d, and the postoperative hospital stay was (13.4±5.7) d. The rate of the postoperative pancreatic fistula was 17.6% (3/17). The spleen infarction occurred in the 2 cases following the Warshaw procedure. The pathologic examination showed that there were 2 patients with the serous cystadenoma, 7 patients with the mucinous cystadenoma, 3 patients with the solid pseudo-papillary tumor, 3 patients with the intraductal papillary mucinous cystadenoma neoplasm, and 2 patients with the insulinoma. All the patients were followed-up for 5 to 26 months (average 13 months), and the perigastric varice occurred in 1 patient, no recurrence or spleen infarction occurred during the following-up. Conclusion LSPDP is a safe, feasible and effective method with less injury and rapid recovery.

Application of three-dimensional navigation template in adult cubitus varus osteotomy

ObjectiveTo investigate the effectiveness of three-dimensional (3D) navigation template in the adult cubitus varus osteotomy.MethodsBetween April 2013 and September 2015, 17 patients with cubitus varus were admitted. There were 6 males and 11 females, aged from 19 to 38 years, with an average age of 26.9 years. There were 10 cases of left elbow joints and 7 cases of right elbow joints. The disease duration was 9-30 years (mean, 18 years). Based on the preoperative X-ray film, the humerus-elbow-wrist (HEW) angle was (−13.2 ±3.3)°, the anteversion angle was (−10.5±2.3)°. The preoperative range of motion (ROM) of flexion was (127.3±7.3)° and ROM of extension was (−10.0±2.5)°. Based on the CT 3D reconstruction, the osteotomy navigation template was designed and printed by 3D printing technique. The cubitus varus osteotomy was assisted by 3D navigation template. The postoperative HEW angle, anteversion angle, and ROMs of the elbow joints of both sides were measured. The elbow function was evaluated based on the Oppenheim elbow function score at 1 year after operation.ResultsAll cubitus varus osteotomies succeeded with the assist of 3D navigation template. All incisions healed by first intention. All patients were followed up 12-15 months (mean, 13 months). X-ray films showed that all osteotomies healed after 9-12 weeks (mean, 11 weeks). At 1 year after operation, the HEW angle was (9.7±1.9)°, the anteversion angle was (20.7±4.3)°, the ROM was (2.6±3.5)° in extension and (139.2±4.8)° in flexion of affected side. The HEW angle, anteversion angle, and ROMs significantly increased compared with preoperative values (P<0.05). And there was no significant difference between affected and normal elbow joints (P>0.05). The elbow functions were excellent in 13 cases and good in 4 cases based on the Oppenheim elbow function score at 1 year after operation. There was no complication such as the nerve injury or osteomyositis of elbow joint during follow-up. ConclusionThe 3D navigation template can provide a personalized and precise osteotomy treatment for adult cubitus varus deformity and obtain a satisfactory effectiveness.

胃大部切除术后十二指肠残端巨大结石1例报告

机器人体外通道螺钉定位系统联合骨盆随意外架辅助复位微创治疗复杂骨盆骨折一例

目的介绍1例机器人体外通道螺钉定位系统联合骨盆随意外架辅助复位微创治疗复杂骨盆骨折的经验。 方法2015年8月收治1例因交通事故伤致复杂骨盆骨折的30岁女性患者。影像学检查示骨盆骨折Tile分型C3型，Young-Burgess分型左侧LC-2型、右侧APC-3型。伤后48 h生命体征平稳后手术，通过骨盆随意外架、骨牵引定向术中复位、机器人导航引导通道螺钉固定。 结果患者术中出血量50 mL，术后切口愈合良好。术后次日影像学检查显示内固定物位置满意，术后3个月骨折愈合，随访6个月内无内固定物松动。术后6个月根据Majeed功能评分标准评价为89分，达优。 结论采用机器人体外通道螺钉定位系统联合骨盆随意外架辅助复位微创治疗复杂骨盆骨折可行，能获得较好疗效。

Application of channel-assisted minimally invasive repair system in Myerson types ⅠandⅡ chronic Achilles tendon rupture

ObjectiveTo investigate the effectiveness of channel-assisted minimally invasive repair system (CAMIR) in treatment of the Myerson types Ⅰ and Ⅱchronic Achilles tendon rupture.MethodsBetween May 2016 and August 2017, 19 patients with Myerson types Ⅰ and Ⅱchronic Achilles tendon ruptures were treated with CAMIR. There were 14 males and 5 females, aged from 21 to 48 years, with an average age of 34.5 years. The disease duration was 5-9 weeks (mean, 7.5 weeks). The preoperative Thompson tests of affected ankles showed positive. There were 11 cases of Myerson type Ⅰwith the gaps of Achilles tendon defect of 1-2 cm (mean, 1.58 cm), and 8 cases of Myerson type Ⅱwith the gaps of Achilles tendon defect of 2.5-4.0 cm (mean, 3.16 cm). The ankle dorsiflexion and plantarflexion range of motion were measured before and after operation; the American Orthopedic Foot and Ankle Society (AOFAS) ankle and hindfoot score was used to assess the patients’ ankle joint function.ResultsNo major blood vessels, nerves, and other tissue structures were damaged during the operation; 3 cases of Myerson type Ⅰ were converted to Myerson type Ⅱ according to the gaps of the defect after the scar tissue was removed during the operation. After operation, the depressed part of the Achilles tendon disappeared, the continuity of the tendon was restored, and the Thompson tests were negative. All 19 patients were followed up 12-25 months, with an average of 14 months. All incisions healed by first intention, and no infection and skin necrosis occurred; all the pre-injury activities and exercise were restored at 6 months after operation. During the follow-up period, no heel pain or re-rupture occurred. At last follow-up, except that there was no significant difference in ankle dorsiflexion range of motion of Myerson type Ⅰ patients (t=2.118, P=0.071), the AOFAS ankle and hindfoot score, ankle plantarflexion range of motion of Myerson types Ⅰ and Ⅱ patients, and ankle dorsiflexion range of motion of Myerson type Ⅱ patients were significantly improved when compared with preoperative values (P<0.05). According to AOFAS ankle and hindfoot function score, the ankle joint function of type Ⅰ patients was excellent in 7 cases and good in 1 case, and of type Ⅱ patients were excellent in 8 cases, good in 2 cases, and fair in 1 case.ConclusionCAMIR is safe and effective in the treatment of Myerson types Ⅰ and Ⅱ chronic Achilles tendon rupture with fewer complications and better functional recovery of ankle joint.

The Effects of Somatostatin Analogue on Proliferation and Apoptosis of Human Cholangiocarcinoma Cell Line

Objective To investigate the regulatory effect of somatostatin analogue (SMS201995,SMS) on proliferation and apoptosis in human cholangiocarcinoma cell line in vitro. MethodsProliferation curve, flow cytometry, agarose gel electrophoresis, Annexin VFITC and flow cytometric immunofluorescent technique were performed to identify the inhibitory effect on cell proliferation and the induction of apoptosis of human cholangiocarcinoma cells (SKChA1). ResultsSMS significantly reduced the SKChA1 cell growth by serum in long experiments and transiently accumulated it in G0/G1 phase. Dotplot analysis of cells duallabeled with Annexin VFITC and PI confirmed the induction of apoptosis by SMS in SKChA1 cells.AnnexinVFITC labeling was markedly enhanced following treatment with SMS for 24 h. DNA of treated SKChA1 cells appeared a ladder pattern characteristic of apoptosis. Besides, timedependent increase in bax and decrease in bcl2 occured during SMS treatment. Conclusion SMS could inhibit the proliferation activity and induce apoptosis of cholangiocarcinoma cell line SKChA1. The mechanisms of apoptosis might be correlated with the expression of apoptosisregulatory gene bax and bcl2.