ObjectiveTo investigate the role of Krüppel-like factor 4 (KLF4) mediated monocyte/macrophage subtype switch in the pathological progression of pulmonary fibrosis.MethodsThirty-six patients with interstitial pneumonia were recruited from Characteristic Medical Center of the Chinese People's Armed Police Force between May 2015 and January 2017. Peripheral venous blood and bronchoalveolar lavage fluid were collected in the morning. Pulmonary function and arterial blood gas were tested after admission. Flow cytometry was used to test monocyte subtypes of peripheral blood and macrophage subtypes of bronchoalveolar lavage fluid. KLF4 of peripheral blood was detected by enzyme linked immunosorbent assay. Thirty normal subjects were selected as control group of peripheral blood mononuclear cell subtypes and KLF4 (control group A), and 10 patients without pulmonary fibrosis who needed bronchoscopy were selected as control group of macrophage subtypes in alveolar lavage fluid (control group B). The relationship between the expression of KLF4 and the differentiation of monocytes and macrophages were observed. Furthermore, the relationship between the differentiation of monocytes subtypes, macrophages subtypes and lung function were observed.ResultsMonocyte of CD14++CD16– subtype in pulmonary fibrosis group was significantly lower than that in control group A (P<0.05). Monocyte of CD14++CD16+ subtype in pulmonary fibrosis group was significantly higher than that in control group A (P<0.05). No significant difference was found between the two groups regarding CD14+CD16++. No correlation was found between three subtypes of monocyte and DLCO of patients and between three subtypes of monocyte and PaO2 of patients. M1 macrophage in pulmonary fibrosis group was significantly lower than that in control group B (P<0.05). M2 macrophage in pulmonary fibrosis group was significantly higher than that in control group B (P<0.05). Negative correlation was found between the ratio of M2 subtypes and DLCO of patients and between the ratio of M2 subtypes and PaO2 of patients (P<0.05). KLF4 protein of blood in pulmonary fibrosis group was significantly higher than that in control group A (P<0.05). Positive correlation was found between the ratio of M2 subtypes and KLF4 protein (P<0.05).ConclusionsCD16+ monocyte plays a role in the occurrence and development of pulmonary fibrosis, but no evidence is found there is a direct correlation between monocyte subtypes of peripheral blood and fibrosis degree of lung tissue. M2 macrophage subtype plays an important role in the development of interstitial pneumonia. The number of M2 macrophages is positively correlated with the severity of pulmonary fibrosis. Monocyte/macrophage subtype differentiation by KLF4 may play a role in the pathological progression of pulmonary fibrosis.
Objective To investigate the effectiveness of tunnel osteogenesis technique combined with locking plate in the treatment of aseptic non-hypertrophic nonunion of femoral shaft. MethodsThe clinical data of 23 cases of aseptic non-hypertrophic nonunion of femoral shaft treated with tunnel osteogenesis technique combined with locking plate between January 2017 and December 2020 were retrospectively analysed. There were 17 males and 6 females with an average age of 41.4 years (range, 22-72 years). There were 22 cases of closed fracture and 1 case of open fracture. The types of internal fixation at admission included intramedullary nail in 14 cases and steel plate in 9 cases. The number of nonunion operations received in the past was 0 to 1; the duration of nonunion was 6-60 months, with an average of 20.1 months. Among them, there were 17 cases of aseptic atrophic nonunion of the femoral shaft and 6 cases of dystrophic nonunion. Twenty-two cases were fixed with 90° double plates and 1 case with lateral single plate. The operation time, theoretical blood loss, hospitalization stay, nonunion healing, and postoperative complications were recorded. Harris hip function score, Lysholm knee function score, lower extremity function scale (LEFS), and short-form 36 health survey scale (SF-36) were used at last follow-up to evaluate hip and knee functions. Visual analogue scale (VAS) score was used to evaluate the relief of pain at 1 day after operation and at last follow-up. ResultsThe average operation time was 190.4 minutes, the average theoretical blood loss was 1 458.4 mL, and the average hospitalization stay was 8.2 days. All the 23 patients were followed up 9-26 months, with an average of 18.2 months. The healing time of nonunion in 22 patients was 3-12 months, with an average of 5.6 months. There were 8 cases of limb pain, 8 cases of claudication, 6 cases of limitation of knee joint movement, and 2 cases of limitation of hip joint movement. At last follow-up, the imaging of 1 patient showed that the nonunion did not heal, accompanied by pain of the affected limb, lameness, and limitation of knee joint movement. At 1 day after operation, the VAS score of 23 patients was 6.5±1.8, the pain degree was good in 7 cases, moderate in 12 cases, and poor in 4 cases; at last follow-up, the VAS score was 0.9±1.3, the pain degree was excellent in 21 cases and good in 2 cases, which were significantly better than those at 1 day after operation (t=12.234, P<0.001; Z=–5.802, P<0.001). At last follow-up, the average Harris hip function score of 22 patients with nonunion healing was 94.8, and the good rate was 100%; Lysholm knee function score averaged 94.0, and the excellent and good rate was 90.9%; LEFS score averaged 74.6; SF-36 physical functioning score averaged 85.0 and the mental health score averaged 83.6. ConclusionTunnel osteogenesis technique combined with locking plate in the treatment of aseptic non-hypertrophic nonunion of femoral shaft has a high healing rate and fewer complications, which can effectively relieve pain and improve lower limb function and quality of patients’ life.
Objective To compare the effects of oxygen therapy and local pressurization in alleviating plateau hypoxia at high altitude. Methods Forty-five healthy male soldiers were investigated at an altitude of 3992 meters. The subjects were randomly divided into three groups, ie. an oxygen inhalation group, a single-soldier oxygen increasing respirator ( SOIR) group and a BiPAP group. The oxygen inhalation group was treated with oxygen inhalation via nasal catheter at 2 L/ min. SOIR was used to assist breath in the SOIR group. The BiPAP group were treated with bi-level positive airway pressure ventilation, with IPAP of 10 cm H2O and EPAP of 4 cmH2 O. PaO2, PaCO2, SpO2 and heart rate were measured before and 30 minutes after the treatment. Results There were continuous increase of PaO2 from ( 53. 30 ±4. 88) mm Hg to( 58. 58 ±5. 05) mm Hg and ( 54. 43 ±3. 01) mm Hg to ( 91. 36 ±10. 99) mm Hg after BiPAP ventilation and oxygen inhalation, respectively ( both P lt; 0. 01) . However, the PaO2 of the SOIR group was decreased from( 56. 00 ±5. 75) mm Hg to ( 50. 82 ±5. 40) mm Hg( P lt; 0. 05 ) . In the other hand, the PaCO2 was increased from ( 30. 41 ±1. 51) mmHg to ( 32. 56 ±2. 98) mm Hg in the oxygen inhalation group ( P lt; 0. 05) , declined from( 28. 74 ±2. 91) mm Hg to ( 25. 82 ±4. 35) mm Hg in the BiPAP group( P lt;0. 05) ,and didn’t change significantly from( 28. 65 ±2. 78) mm Hg to ( 29. 75 ±3. 89) mmHg in the SOIR group ( P gt;0. 05) . Conclusions Both BiPAP ventilation and oxygen inhalation can alleviate plateau hypoxia by improving PaO2 at 3992 meter altitude while SOIR has no significant effect.
ObjectiveTo investigate the surgical skills and clinical effects of the laparoscopic transabdominal preperitoneal (TAPP) inguinal hernia repair in treatment of recurrent inguinal hernia with plug prefix mesh. MethodsThe clinical data such as operation time, intraoperative blood loss, postoperative hospital stay, and postoperative complications of 87 patients with recurrent inguinal hernia reoperated in laparoscopic TAPP after inguinal hernioplasty with plug prefix mesh (recurrent hernia group), in the Department of Gastroenterology and Hernia surgery of the First Affiliated Hospital of Kunming Medical University from January 2011 to December 2013, were retrospectively analyzed, which were compared with the 834 incipient inguinal hernia patients operated first by TAPP (incipient hernia group) at the same time. ResultsThe operations were completed successfully in all of the 921 patients without conversion to open surgery. The operation time and intraoperative blood loss in the recurrent hernia group were significantly more than those in the incipient hernia group (P=0.000, P=0.000), the postoperative hospital stay had no signifcant difference between two groups (P=0.057). No recurrences were observed in the recurrent hernia group and incipient hernia group for following-up of (31±4) months and (28±6) months, respectively. Compared with the incipient hernia group, the rates of postoperative pain on day 30 and seroma on day 1 and 3 were higher in the recurrent hernia group (P=0.001, P=0.040, P=0.003, respectively). There were no severe complications such as collateral damage, foreign body sensation, incision infection, intestinal obstruction and so on in the two groups. ConclusionsThe laparoscopic TAPP inguinal hernia repair is safe and effective for patients with recurrent inguinal hernia with plug prefix mesh. More skills are required to reduce the complications. The operation time and intraoperative blood loss in reoperated patients with recurrent inguinal hernia are more than those in patients with incipient inguinal hernia. The rates of seroma on day 1 and 3 are also higher.
ObjectiveTo study the efficacy, the operation skills, and the complications of laparoscopic totally extraperitoneal prosthesis (TEP). MethodsThe clinical data of 1 020 patients received TEP from April 2011 to March 2014 were retrospectively analyzed. The oral feeding time, out of bet time, operation time, hospital stay, hospitalization costs, postoperative complications, and so on were recorded. ResultsAmong the 1 020 patients, the types of hernias were 810 indirect inguinal hernias (including unilateral hernia and bilateral hernia), 118 direct inguinal hernias, 24 femoral hernias, and 68 recurrent inguinal hernias. The surgeries were basically successfully completed in all the patients, including 12 cases (both recurrent hernia) of conversion to laparoscopic transabdominal preperitoneal prosthesis (TAPP). All the patients could take food in a day and get out of bed on day 1 after operation. The unilateral operation time was (48±9.8) min, bilateral was (65±8.6) min. The postoperative hospital stay was 0.5-2.0 d, total hospital stay was (3.48±2.40) d, hospitalization costs was (8 958±1 685) yuan. Main complication was 61 (5.98%) cases of seroma, 48 (4.70%) cases of temporary nerve paresthesia, 23 (2.78%) cases of urinary retention, 9 (0.88%) cases of chronic pain, and 5 (0.49%) cases of abdominal artery injury. No incision infection, visceral injury, small intestinal obstruction, and other serious complications happened. No occurrence occurred with following-up for 1 year. Classification of different hernia complications, the statistical analysis showed that the total incidence of complications of the typeⅣwas highest, then which was in sequence of typeⅢ, typeⅡ, typeⅠ(P < 0.001). ConclusionLaparoscopic TEP is a safe, reasonable repair without tension with small incision, lighter abdominal interference, less pain, early return to normal activities, but it is a difficult technology and has a higher cost.