Effects of Muscle Type and Aging on Glycolysis and Physicochemical Quality Properties of Bactrian camel (Camelus bactrianus) Meat

Poor tenderness of camel meat has seriously hampered the development of the camel meat industry. This study investigated the effects of muscle fiber composition and ageing time on meat quality, glycolytic potential, and glycolysis-related enzyme activities. Muscle samples of the longissimus thoracis (LT), psoas major (PM), and semitendinosus (ST) were collected from eight 8-10 year old Sonid Bactrian camels (females). Muscle fiber composition was examined by ATPase staining and immunohistochemistry. Meat quality indexes, glycolytic potential, and activities of major glycolytic enzymes were examined at 4 °C aging for 1, 6, 24, 72, and 120 h. The results showed that LT was mainly composed of type IIb muscle fibers, whereas PM and ST were mainly composed of type I muscle fibers. The PCR results of the myosin heavy chain (MyHC) were consistent with the ATPase staining results. During aging, the shear force of LT muscle was always greater than that of PM and ST, and its glycolysis was the strongest; type IIa, IIb, and IIx muscle fibers were positively correlated with muscle shear force and glycolysis rate, and type I muscle fibers were significantly and negatively correlated with the activities of the key enzymes of glycolysis within 6 h. The results showed that the muscle fibers of LT muscle had the greatest glycolysis capacity. These results suggest that an excessive type IIb muscle fiber number percentage and area in camel meat accelerated the glycolysis process, but seriously affected the sensory profile of the camel meat. The results of this study provide directions for the camel industry when addressing the poor tenderness of camel meat.

Changes and Significance of Interleukin 17 Expression in Patients After Renal Transplantation

BACKGROUND

The purpose of this study was to investigate the expression and significance of interleukin (IL)-17 in acute rejection after renal transplantation.

METHODS

From September 2019 to December 2021, patients and healthy volunteers who underwent renal allograft transplantation and renal biopsy in our hospital were selected and divided into 4 groups: the stable group (stable) showed no obvious abnormality in renal transplantation pathology; the pathologic diagnosis of acute rejection was the rejection group; the pathologic diagnosis of renal transplantation was immunosuppressive poisoning in the drug group; and the normal group (control) was healthy volunteers. The expression of IL-17 was detected by reverse transcription-polymerase chain reaction, quantitative enzyme-linked immunosorbent assay, and immunohistochemistry. Analysis of the area under the curve and sensitivity and specificity of IL-17 for the diagnosis of acute rejection after raw transplantation was done using receiver operating characteristic curves.

RESULTS

Compared with those in the normal group and the stable group, the expression of IL-17 DNA in the blood, the value of IL-17 in the blood, and the integrated optical density value of IL-17 in the transplanted kidney were significantly higher in the rejection group (P < .05). There were no statistically significant differences in the expression of blood IL-17 DNA, the value of blood IL-17, or the integrated optical density value of transplanted kidney IL-17 between the normal group and the stable group (P > .05).

CONCLUSION

IL-17 is involved in acute rejection after renal transplantation. Increased expression of IL-17 is seen in the blood and kidneys of patients with acute rejection after renal transplantation. The detection of IL-17 may provide a theoretical basis for diagnosing and treating acute rejection in human kidney transplantation.

Biomechanical comparison of anterior axis-atlanto-occipital transarticular fixation and anterior atlantoaxial transarticular fixation after odontoidectomy: A finite element analysis

Background: Anterior axis-atlanto-occipital transarticular fixation (AAOF) and anterior atlanto-axial transarticular fixation (AAF) are two common anterior screw fixation techniques after odontoidectomy, but the biomechanical discrepancies between them remain unknown. Objectives: To investigate the biomechanical properties of craniovertebral junction (CVJ) after odontoidectomy, with AAOF or AAF. Methods: A validated finite element model of the intact occipital-cervical spine (from occiput to T1) was modified to investigate biomechanical changes, resulting from odontoidectomy, odontoidectomy with AAOF, and odontoidectomy with AAF. Results: After odontoidectomy, the range of motion (ROM) at C1-C2 increased in all loading directions, and the ROM at the Occiput-C1 elevated by 66.2%, 57.5%, and 41.7% in extension, lateral bending, and torsion, respectively. For fixation models, the ROM at the C1-C2 junction was observably reduced after odontoidectomy with AAOF and odontoidectomy with AAF. In addition, at the Occiput-C1, the ROM of odontoidectomy with AAOF model was notably lower than the normal model in extension (94.9%), flexion (97.6%), lateral bending (91.8%), and torsion (96.4%). But compared with the normal model, in the odontoidectomy with AAF model, the ROM of the Occiput-C1 increased by 52.2%, -0.1%, 92.1%, and 34.2% in extension, lateral bending, and torsion, respectively. Moreover, there were no distinctive differences in the stress at the screw-bone interface or the C2-C3 intervertebral disc between the two fixation systems. Conclusion: AAOF can maintain CVJ stability at the Occiput-C1 after odontoidectomy, but AAF cannot. Thus, for patients with pre-existing atlanto-occipital joint instability, AAOF is more suitable than AAF in the choice of anterior fixation techniques.

Bladder triangle amyloidosis: A case report and literature review

RATIONALE

Amyloidosis is a group of benign lesions characterized by extracellular deposition of amyloid proteins. Amyloidosis lesions can occur in various organs of the body, but rarely in the urinary system. Amyloidosis in the bladder trigone is extremely rare.

PATIENT CONCERNS

An 80-year-old female patient presented with painless whole-course gross hematuria with reddish urine and no blood clots, accompanied by right lumbar discomfort.

DIAGNOSIS

Based on the patient's medical history and cystoscopy findings, the relevant literature was reviewed and a preoperative diagnosis of bladder tumor was made, although bladder amyloidosis was not excluded. Postoperative pathology ultimately revealed bladder amyloidosis.

INTERVENTIONS

The patient underwent resection of bladder tumor and ureteral stent implantation. Postoperatively, the patient was maintained on antibiotics and oral colchicine treatment.

OUTCOMES

Two months after surgery the patient reported that the gross hematuria had disappeared, and that the right lumbar discomfort was significantly relieved.Cystoscopy showed no obvious recurrence in the operative area, but magnetic resonance imaging (MRI) suggested recurrence. The patient refused partial cystectomy, and the ureteral stent was removed.

LESSON

The clinical manifestations of bladder amyloidosis are nonspecific, and under cystoscopy can be easily confused with bladder tumors. Accurate diagnosis of bladder amyloidosis relies on histopathology. Transurethral resection of bladder tumors or partial cystectomy is an option for surgical treatment; the latter should be performed if the ureteral opening is involved.

Bladder malacoplakia: A case report

BACKGROUND

Bladder malacoplakia is a rare chronic granulomatous disease. The most common site of the malacoplakia is the urinary system. The etiology of bladder malacoplakia is complex, with its clinical misdiagnosis rate is high. Therefore, exposure to more clinical cases is necessary to improve the diagnosis and treatment of this condition.

CASE SUMMARY

A 65-year-old woman was admitted to our hospital because of dysuria. She presented with dysuria, frequent urination, urgency, pain, and absence of hematuria and pyuria. After the examination, bladder tumor electrocision was performed under combined intravenous and inhalation anesthesia on September 6, 2021. During the operation, electrotomy and electrocoagulation were performed. The operation was then followed by anti-infection treatment, and the patient recovered well. The postoperative pathology was diagnosed as bladder malacoplakia by light and electron microscopic analyses. On a follow-up after 4 mo, no significant difference between electrotomy and electrocoagulation was found, with both achieving a curative effect.

CONCLUSION

Diagnosing bladder malacoplakia depends on histopathological examination. Antibiotic treatment with bladder tumor resection or electrocoagulation provides better therapeutic effect.

Changes and Significance of IL-17 in Acute Renal Allograft Rejection in Rats

BACKGROUND

To investigate the changes and significance of interleukin-17 (IL-17) in acute rejection following rat kidney transplantation.

METHODS

Using inbred Sprague Dawley rats as donors and Wistar rats as recipients, an acute rejection model of kidney transplantation was established to evaluate the effects of IL-17. Reverse transcription polymerase chain reaction and immunohistochemistry were used to detect IL-17.

RESULTS

Compared with those in the normal control group, the rats in the allogeneic transplantation (ATX) group had different degrees of acute rejection 3, 5, and 7 days after operation, and the expression of IL-17 mRNA in the transplanted kidney was significantly increased (P < .05). In the ATX group, acute rejection was observed 7 days after operation, and the integrated optical density (IOD) value of IL-17 was significantly increased (P < .05). Compared with the normal control group, acute rejection occurred in varying degrees at 3, 5, and 7 days after operation in the ATX group, and the IOD value of IL-17 significantly increased (P < .05).

CONCLUSIONS

IL-17 expression is increased in acute rejection after renal transplantation in rats. Other surgical factors in addition to acute rejection had no effect on IL-17 expression in rat kidney transplants. The immunosuppressant cyclosporin A was used to prevent the expression of IL-17 in rats with acute rejection.

Evaluating the treatment and control of modifiable cardiovascular disease risk factors among patients with diabetes in the Inner Mongolia, China: A cross-sectional study

Reducing the risk of diabetes has been a great public health challenge in China. In this study, we aimed to estimate the treatment and control of FPG (fasting blood plasma glucose) as well as the other main modifiable cardiovascular disease (CVD) risk factors in patients with diabetes and to identify those characteristics associated with the treatment and control of diabetes, hypertension, and low-density lipoprotein cholesterol (LDL-C). Between 2015 and 2017, participants aged 35 to 75 years from Inner Mongolia in northern China were recruited. A total 13,644 participants with diabetes were enrolled in this study. We calculated rates and 95% confidence intervals for treatment and control of FPG, blood pressure, and LDL-C. We performed multivariate logistic regression to identify characteristics associated with the treatment and control of diabetes as well as hypertension and LDL-C. Overall, the treatment rates of diabetes, hypertension, and dyslipidemia were 30.76%, 50.75%, and 9.17%, respectively. Control rates of FPG, blood pressure, and LDL-C were 4.73%, 4.86%, and 57.83%, respectively. Patients who were younger, Mongol ethnicity and rural residents were less likely to be treated and controlled for diabetes and hypertension. Patients insured by NCMS (new rural cooperative medical scheme) were less likely to be treated and achieve the treatment target of blood pressure. Patients having prior CVD were more likely to be treated and have controlled FPG and blood pressure. Substantial efforts are urgently needed to improve the treatment and control of these modifiable CVD risk factors among patients with diabetes in Inner Mongolia.

Prevalence of dyslipidemia and associated risk factors among adults aged ≥35 years in northern China: a cross-sectional study

Background

Cardiovascular disease (CVD) prevalence has increased continuously over the last 30 years in China. Dyslipidemia is an important modifiable risk factor in CVD. We aimed to collect current data on the prevalence of dyslipidemia in northern China and explore potential influencing factors.

Methods

In this cross-sectional study, we selected a representative sample of 65,128 participants aged ≥35 years in Inner Mongolia during 2015–2017. All participants completed a questionnaire and were examined for risk factors. Dyslipidemia was defined according to 2016 Chinese guidelines for adults. The associated factors for dyslipidemia were estimated by multivariate logistic regression analysis.

Results

The age-standardized prevalence of dyslipidemia was 31.2% overall, with 4.3, 2.4, 14.7, and 17.4% for high total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), triglycerides (TG), and low high-density lipoprotein cholesterol (HDL-C), respectively. The dyslipidemia prevalence was significantly higher in men than women (37.9% vs. 27.5%, P < 0.001), but postmenopausal women had a higher prevalence of dyslipidemia components (except low HDL-C). Compared with Han participants, Mongol participants had a lower prevalence of dyslipidemia (29.1% vs. 31.4%, P < 0.001). Male sex, living in urban areas, Han ethnicity, smoking, obesity, central obesity, hypertension, and diabetes were all positively correlated with dyslipidemia; alcohol consumption was linked to lower risk of dyslipidemia.

Conclusions

Our study revealed that dyslipidemia is a health problem in northern China. Greater efforts to prevent and manage dyslipidemia, especially in men under age 55 years, postmenopausal women, and people with unhealthy lifestyles or chronic diseases.

[Indirect determination of trace silicon in cobaltosic oxide by extraction-FAAS]

After the heteropolymobdate of silicon and phosphorus was formed, the heteropolymobdate of phosphorus was extracted into CH3COOH4H9 phase and P as interference element was separated. The heteropolymobdate of silicon was extracted by MIBK. Indirect determination of Si was achieved with Mo in MIBK determined by FAAS. Applying this method to the determination of silicon in cobaltosic oxide, the interferences of matrix cobalt and other coexistence elements were avoided. Compared to spectrophotometric method, the result is satisfactory.

[A study on AIDS-related knowledge, attitude and behavior in servicemen in China]

AIDS-related knowledge, attitude and behavior were studied in 1,058 servicemen in China with self-administered and anonymous questionnaires. Results showed 76.7% to 89.5% of the servicemen surveyed knew correctly the risk of AIDS and its route of transmission, but only 8.5% of them answered all the questions listed in the questionnaire correctly. Source of their knowledge about AIDS was mainly from newspapers, magazines and extracurricular books. Most of them thought they could have very little, or no chance to contract the illness. There were 74.0% of the servicemen eager to get knowledge about AIDS and 83.2% would like to accept relevant testing. And, 80.2% of them answered that they could put their behavior under control, or change their unhealthy one to prevent from the illness. It indicated that comprehensive and correct publicity and education could play an active role in the prevention of HIV infection.