OBJECTIVETo compare the cleaning effect of automatic cleaning machine and manual cleaning on coupling type surgical instruments.

METHODSA total of 32 cleaned medical instruments were randomly sampled from medical institutions in Putuo District medical institutions disinfection supply center. Hygiena System SUREII ATP was used to monitor the ATP value, and the cleaning effect was evaluated.

RESULTSThe surface ATP values of the medical instrument of manual cleaning were higher than that of the automatic cleaning machine.

CONCLUSIONCoupling type surgical instruments has better cleaning effect of automatic cleaning machine before disinfection, the application is recommended.

Disinfection ; instrumentation ; standards ; Durable Medical Equipment ; standards ; Fluorescence ; Surgical Equipment ; standards

Objective:To observe the clinical effect of needling gluteus medius muscle trigger point (TrP) plus chiropractic for sacroiliac joint subluxation.Methods:A total of 124 cases conforming to the inclusion criteria of sacroiliac joint subluxation were classified by anterior subluxation and posterior subluxation,and randomized into a TrP group and a conventional group respectively.There were 63 patients with anterior subluxation who were randomized into a TrP group of 32 cases (including 4 dropped out cases) and a conventional group of 31 cases (including 3 dropped out cases);and 61 patients with posterior subluxation who were randomized into a TrP group of 31 cases (including 3 dropped out cases) and a conventional group of 30 cases (including 3 dropped out cases).Patients in the TrP group received the treatment of needling gluteus medius muscle TrP plus chiropractic,while patients in the conventional group received conventional acupuncture treatment plus chiropractic.The treatment was done twice a week for a succession of 8 weeks.Then,the pain visual analog scale (VAS),Oswestry disability index (ODI) and therapeutic efficacy were evaluated.Results:After treatment,the total effective rate of TrP group with anterior subluxation was 96.9％,higher than 77.4％ in the conventional group,the difference showed a statistical significance (P＜0.05);the total effective rate was 93.5％ in the TrP group with posterior subluxation,higher than 73.3％ in the conventional group.After treatment,the VAS and ODI scores in both groups dropped obviously,the differences showed statistical significance (all P＜0.05);the scores of VAS and ODI in the TrP group were obviously lower than those in the conventional group (all P＜0.05).Conclusion:Needling gluteus medius muscle TrP plus chiropractic had a better therapeutic effect than conventional acupuncture plus chiropractic for sacroiliac joint subluxation.

Objective To increase the transfection of EGFP-N3 plasmids into 293T cells using ultrasound-targeted microbubbles delivery(UTMD) mediated a peptide nucleic acid (PNA) binding nuclear localization signal (NLS).Methods Antibody-targeted microbubbles were used in the experiments which can specifically recognize the SV40T antigen receptor.The SV40T antigen receptors were expressed on the membranes of 293T cells.The PNA containing the NLS were inserted in the EGFP-N3 plasmid DNA,which increased nuclear localization.Ultrasound-targeted microbubble delivery (UTMD) and the PNA binding NLS were utilized to improve the cytoplasmic import of plasmids and the nuclear intake of the plasmid from the cytoplasm,respectively.The study was divided into five groups:Contrast (group A),Common microbubble + DNA (group B),Antibody-targeted microbubbles + DNA (group C),Common microbubbles + NLS-PNA-DNA (group D),Antibody-targeted microbubbles + NLS-PNA-DNA (group E).Fluorescence microscope was used to observe the fluorescent light in each group;flow cytometry to test the transfection;RT-PCR and Western blot to detect genes' mRNA and protein expression level.Results Ultrasound and antibody-targeted microbubble delivery (UTMD) significantly enhanced the cytoplasmic intake of exogenous genes and maintained high cell viability(＞80％).Fluorescent microscope showed that the quantities of green fluorescence in cells were increased successfully.The transfection results of flow cytometry were 0,(9.30 ± 0.46)％,(26.46 ± 2.01)％,(29.54 ± 0.62)％,(45.72 ± 1.86)％,respectively,and the differences were statistically significant(P ＜0.05).The relative mRNA and protein expression in group E were greater than those in group C and D respectively (P ＜0.05).Conclusions UTMD combined with antibody-targeted microbubbles and a PNA binding NLS plasmid can significantly improve transfection efficiency of exogenous genes by enhancing both cytoplasmic and nuclear DNA import.

Animals ; Biofilms ; Caenorhabditis elegans ; metabolism ; Genes, Bacterial ; Yersinia pestis ; genetics ; metabolism

Adolescent ; Adult ; Aged ; Biliary Tract Neoplasms ; diagnosis ; diagnostic imaging ; pathology ; surgery ; Female ; Humans ; Male ; Middle Aged ; Papilloma ; diagnosis ; diagnostic imaging ; pathology ; surgery ; Radiography ; Young Adult

To examine the feasibility of using a computer tool for stratifying the severity of Coronavirus Disease 2019 (COVID-19) based on computed tomography (CT) images. We retrospectively examined 44 confirmed COVID-19 cases. All cases were evaluated separately by radiologists (visually) and through an in-house computer software. The degree of lesions was visually scored by the radiologist, as follows, for each of the 5 lung lobes:0, no lesion present;1,<1/3 involvement;2,>1/3 and<2/3 involvement;and 3,>2/3 involvement. Lesion density was assessed based on the proportion of ground-glass opacity (GGO), consolidation and fibrosis of the lesions. The parameters obtained using the computer tool included lung volume (mL), lesion volume (mL), lesion percentage (％), and mean lesion density (HU) of the whole lung, right lung, left lung, and each lobe. The scores obtained by the radiologists and quantitative results generated by the computer software were tested for correlation. A Chi-square test was used to test the consistency of radiologist- and computer-derived lesion percentage in the right/left lung, upper/lower lobe, and each of the 5 lobes. The results showed a strong to moderate correlation between lesion percentage scores obtained by radiologists and the computer software (r ranged from 0.7679 to 0.8373, P < 0.05), and a moderate correlation between the proportion of GGO and mean lesion density (r=-0.5894, P<0.05), and proportion of consolidation and mean lesion density (r=0.6282, P<0.05). Computer-aided quantification showed a statistical significant higher lesion percentage for lower lobes than that assessed by the radiologists (x2 = 8.160, P = 0.004). Our experiments demonstrated that the computer tool could reliably and accurately assess the severity and distribution of pneumonia on CT scans.

Objective To explore the current status of the prenatal care quality and the influencing factors in Hangzhou City. Methods We used sociodemographic characteristics questionnaire and the Chinese version of QPCQ to investigate 383 pregnancy women who were at 36 weeks' gestation or greater by convenient sampling method from September to December in 2016. Results A total of 350 questionnaires were valid. The average age of 350 samples was (29.71±3.67) years old. There were 231 primiparas which accounted for 66.00％. Among them, 196 (56.00％) were satisfied with the prenatal care they received, and 153 (43.70％) think general, and only 1 (0.30％) felt unsatisfied. The score of the Chinese version of QPCQ was 3.61±0.50. The item "My prenatal care professional (s) always answered my questions honestly" had the highest scores of 4.10±0.62, while "My prenatal care professional (s) did things hastily" had the lowest scores of 2.44±0.96 . By multiple linear regression analysis, those people who had more visiting time (β' = 0.21, P<0.01), less waiting time (β' = -0.18, P<0.01) and the cognition of the essentiality of pregnancy school (β' = 0.12, P=0.02) were more likely to give higher regards for the quality of prenatal care. Conclusion Sufficient time scored relative lower in the whole questionnaire. So, hospitals could take efforts to shorten the waiting time by promoting the hospital process optimization, making good use of this period time and other strategies, so as to improve the quality of prenatal care.

BACKGROUNDMotor dysfunction is common in stroke patients. Clinical electrophysiological studies suggest that transsynaptic degeneration occurred in the lower motor neurons, while pathological evidence is lacked. This study aimed to combine the electrophysiological and pathological results to prove the existence of transsynaptic degeneration in the motor system after stroke.

METHODSModified neurologic severity score, electrophysiological, and pathological assessments were evaluated in rats before middle cerebral artery occlusion (MCAO), and at 24 hours, 7 days, and 14 days after MCAO. Paired and independent-sample t-tests were applied to assess the changes of electrophysiological and pathological data.

RESULTSCompound motor action potential amplitude in the paretic side was significantly lower than the nonparetic side at both 24 hours (61.9 ± 10.4 vs. 66.6 ± 8.9, P < 0.05) and 7 days (60.9 ± 8.4 vs. 67.3 ± 9.6, P < 0.05) after MCAO. Motor unit number estimation of the paretic side was significantly less than the nonparetic side (379.0 ± 84.6 vs. 445.0 ± 89.5, P < 0.05) at 7 days after MCAO. Until 14 days after stroke, the pathological loss of motor neurons was detected. Motor neurons in 14-day MCAO group were significantly decreased, compared with control group (5.3 ± 0.7 vs. 7.3 ± 1.8, P < 0.05).

CONCLUSIONSBoth electrophysiological and pathological studies showed transsynaptic degeneration after stroke. This study identified the asynchronization in changes of electrophysiology and pathology. The abnormal physiological changes and function impairment can be detected in the early stage and recovered quickly, while the pathological loss of motor neuron can be detected only in a later stage.

Animals ; Electrophysiology ; Infarction, Middle Cerebral Artery ; pathology ; physiopathology ; Male ; Motor Neurons ; pathology ; Rats ; Rats, Sprague-Dawley ; Spinal Cord ; pathology ; physiopathology

OBJECTIVETo investigate the clinical correlation of chromosome abnormalities and microdeletion in azoospermic factor (AZF) region on Y chromosome in 25 patients with azoospermia.

METHODSChromosome analyses were performed by using chromosome GTG-banding, Q-banding, fluorescence in situ hybridization (FISH) and polymerase chain reaction (PCR) for AZF region on chromosome Yq.

RESULTSSeven cases showed abnormal chromosome karyotype (28%). In 8 azoospermic patients tested, 2 showed microdeletions of AZFb (SY127, SY134)+ AZFc (SY254, SY255) and AZFc(SY243, SY158) on chromosome Yq, respectively.

CONCLUSIONChromosome abnormalities and AZF microdeletion are major cause of azoospermia leading to male infertility; male with azoospermia and infertility should be referred to cytogenetic diagnosis by using chromosome GTG-banding, Q-banding after ruling out clinical factors including testopathy, obstructive azoospermia, and abnormalities in incretion and immune system. FISH or PCR analysis for AZF region on chromosome Yq should be done for the patient with azoospermia if Q-banding indicates the deletion above Yq12 region. It is of essential importance to provide precise diagnosis in genetic counseling for further clinical treatment.

Adult ; Azoospermia ; genetics ; Chromosome Deletion ; Chromosomes, Human, Y ; genetics ; Humans ; In Situ Hybridization, Fluorescence ; Male ; Middle Aged ; Polymerase Chain Reaction

OBJECTIVETo design a kind of adjustable triangle external fixator, and to use it for treating calcaneal fractures.

METHODSThe external fixator was installed into extremity near the both sides of three Kirschner wires crossing the calcaneal tubercle, the lower end of the tibia and the first cuneiform. The support rod length was adjusted to ensure the Kirschner wires affecting the calcaneal tubercle, so the Böhler angle and anteroposterior diameter of the calcaneus were recovered. From April in 2003 to April in 2008, the external fixators were used to treat 34 patients with calcaneal fractures, including 30 males and 4 females, ranging in age from 19 to 54 years, with an average of 36.7 years. The Böhler angles were -5 degree to 15 degree, with an average of 13.5 degrees. According to Sander's classification, 2 patients were type II, 20 patients were type III, and 12 patients were type IV.

RESULTSThirty-four patients were followed up, and the duration ranged from 3 months to 4 years, averaged 25 months. The Böhler angle recovered to 30 degree to 40 degrees, with a mean of 32.5 degrees. The Maryland mean score improved from preoperative (24.76+/-15.05) to postoperative (83.26+/-16.81). Based on Maryland criteria, 8 patients got an excellent result, 21 good, 3 fair and 2 bad.

CONCLUSIONThe adjustable triangle external fixator for treating calcaneal fractures has the following advantages : simple approach, good recovery, little reinjury and complications, effectiveness to recovery Böhler angle and anteroposterior diameter of calcaneal, which is an ideal method to treat calcaneal fractures.

Adult ; Calcaneus ; diagnostic imaging ; injuries ; surgery ; External Fixators ; Female ; Fractures, Bone ; diagnostic imaging ; surgery ; Humans ; Male ; Middle Aged ; Models, Theoretical ; Radiography ; Treatment Outcome ; Young Adult