1.Characterisation of human tear proteins using high-resolution mass spectrometry.
Lei ZHOU ; Roger W BEUERMAN ; Yonghwee FOO ; Shouping LIU ; Leonard P K ANG ; Donald T H TAN
Annals of the Academy of Medicine, Singapore 2006;35(6):400-407
INTRODUCTIONThe proteins found in tears play an important role in maintaining the ocular surface and changes in tear protein components may reflect changes in the health of the ocular surface. Proteomics provides a comprehensive approach for cataloguing all the proteins of the tear proteome, which will help to elucidate disease pathogenesis, make clinical diagnoses and evaluate the influence of medications on the structure, composition and secretion of tear proteins. In this study, an alternative proteomic strategy was investigated to explore the human tear proteome.
MATERIALS AND METHODSTear samples were obtained from patients who had pterygium and were collected on the first day and third day after pterygium surgery. Tears pooled from 6 patients were used in the analysis. Reverse-phase high-pressure liquid chromatograph (RPHPLC) was used as the first step to separate intact proteins into 21 peaks. Each fraction was then tryptic-digested and analysed by nanoLC-nano-ESI-MS/MS to characterise the protein components in each fraction.
RESULTSIn total, 60 tear proteins were identified with high confidence, including well-known abundant tear proteins, and tear-specific proteins such as lacritin and proline-rich proteins. Among them, proline-rich protein 5 was found for the first time in tear fluid. A large number of plasma proteins were also observed in tear fluid.
CONCLUSIONSThe results showed that the proteomic strategy used in this study was successfully applied to analyse tear proteome.
Eye Proteins ; analysis ; Humans ; Mass Spectrometry ; methods ; Proteome ; Tears ; chemistry
2.Effect of electroacupuncture and acupoint injection on expression of plasma proinflammatory cytokines and motilin for patients with early postoperative inflammatory intestinal obstruction.
Li-Ping SHEN ; Chun-Hua LEI ; Kai-Yun DING
Chinese Acupuncture & Moxibustion 2011;31(9):795-798
OBJECTIVETo verify the efficacy of electroacupuncture (EA) and acupoint injection on early postoperative intestinal obstruction and explore its mechanism.
METHODSOne hundred and sixteen cases were divided randomly into two groups. In control group (56 cases), the conventional western medicine was applied, including gastrointestinal decompression, parenteral nutrition (PN), anti-inflammation and supporting therapy. In observation group (60 cases), on the basis of the treatment as control group, EA and acupoint injection with Neostigmine were supplemented. Zusanli (ST 36), Shangjuxu (ST 37)/Xiajuxu (ST 39) and Dachangshu (BL 25) were selected as main points. Before treatment and after 3 days treatment, the levels of plasma interleukint (IL-6), tumor necrosis factor-alpha (TNF-alpha) and motilin (MOT) were determined.
RESULTSIn observation group, the mean recovery time of bowel sound and the mean frequency of passing gas were less than those in control group (both P < 0.01). After treatment, in either group, the levels of IL-6 and TNF-alpha were down-regulated as compared with those before treatment (all P < 0.01). After treatment, in observation group, IL-6 level was (15.2 +/- 4.1) pg/mL and TNF-alpha level was (18.3 +/- 6.5) pg/mL. They were (35.5 +/- 7.2) pg/mL and (52.7 +/- 12.3) pg/mL respectively in control group, indicating significant difference in statistics between two groups (both P < 0.01). In either group, MOT level increased after treatment as compared with that before treatment (both P < 0 01). After treatment, in observation group, the increase of MOT level was superior to that in control group [(190.7 +/- 48. 5 ) pg/mL vs (114.6 +/- 36.9) pg/mL, P < 0.01].
CONCLUSIONElectroacupuncture and acupoint injection are significantly effective in the treatment of early postoperative intestinal obstruction. This therapy may inhibit the release of inflammatory factors to reduce intestinal wall edema and it may promote MOT secretion to increase intestinal peristalsis. As a result, the recovery of gastrointestinal function is promoted.
Acupuncture Points ; Adult ; Aged ; Cytokines ; blood ; Electroacupuncture ; Female ; Humans ; Inflammation ; therapy ; Injections ; Intestinal Obstruction ; therapy ; Male ; Middle Aged ; Motilin ; blood ; Postoperative Complications ; therapy
3.Audiological characteristics of unilateral auditory neuropathy: 11 case study.
Jinling WANG ; Li SHI ; Lei GAO ; Juan XIE ; Liping HAN
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2007;21(10):436-440
OBJECTIVE:
To investigate the audiological characteristics in unilateral auditory neuropathy (UAN).
METHOD:
By the retrospective studies, 11 patients which were diagnosed as UAN and bilateral auditory neuropathy (AN) group and control group were measured.
RESULT:
By the statistical studies of patients from otology clinic data from January 2001 to September 2006,11 patients (11 ear, 5 left ear and 6 right ear, 3.2%) in 340 AN patients diagnosed as UAN were summarized. Four patient were male and 7 were female in 11 patients (1: 1.75). The average age of 11 patients was 20 years old and the average period of diseases was 3.1 years. All patients complained of unilateral gradual hearing loss, and 6 patients in all UAN patients can't discriminate speech correctly. Four patients complained of tinnitus and none of UAN patients complained of dizziness. The pure tone audiograms of 5 patients in all UAN patients (45.4%) were descending curve and those of 4 patients (36.4%) were ascending curve. Eleven patients mostly showed severity degree or midrange degree (6 ear, 54.5%) sensorineural hearing loss. The average pure tone threshold of UAN was obviously higher than the AN group and the speech hearing of UAN is obviously worse, and ABR of all patients was absent, while uninjured side of UAN was normal. Bilateral ears of UAN patients were evoked distortion products otoacoustic emissions. The amplitude of DP-gram and SNR in UAN group was lower obviously (P < 0.05) than the normal control group at all frequencies (0.5-8.0 kHz) and was lower significantly (P < 0.01) at flat and high-frequency, but was lower obviously (P < 0.01) than the AN group at low-frequency. The contralateral suppression effect of DPOAE amplitude in 4 UAN patients of normal ears was suppressed, and that in injured ears was reduced or disappeared, even 0.5 kHz increased DPOAE amplitude. ENG and VEMP were observed in 5 UAN patients, and 1 patients shows semicircular canal failure and 1 patients shows paralysis unilateral. The VEMP of them showed no response in 1 (2 ear) of 5 and showed response in 4 of 5, but the amplitudes of VEMP were lower in 2 UAN patients.
CONCLUSION
The UAN patients mostly showed ascending curve and ponderosity degree sensorineural hearing loss. The diagnosis of UAN is different from other common sensorineural deafness. The detection of DPOAE and ABR has great significance in diagnosing the UAN.
Adolescent
;
Adult
;
Audiometry, Pure-Tone
;
Auditory Threshold
;
Case-Control Studies
;
Child
;
Child, Preschool
;
Evoked Potentials, Auditory, Brain Stem
;
Female
;
Hearing Loss, Central
;
diagnosis
;
physiopathology
;
Hearing Loss, Unilateral
;
diagnosis
;
physiopathology
;
Humans
;
Male
;
Retrospective Studies
;
Young Adult
4.Impact of novel P2Y12 receptor inhibitors on platelet reactivity in acute coronary syndrome patients undergoing percutaneous coronary intervention.
T J Chong TOU ; P M LIU ; J F WANG ; Z C Sio CHAM ; Y F O U ; Z W Lei SIO ; P Z Lei PUT ; S M Lei SOK ; S X ZHOU ; W WU
Chinese Journal of Cardiology 2016;44(2):138-143
OBJECTIVETo investigate the impact of novel P2Y(12) receptor inhibitors including prasugrel or ticagrelor on platelet reactivity in patients with acute coronary syndrome (ACS) receiving percutaneous coronary intervention (PCI), and provide clinical data for novel oral P2Y(12) receptor inhibitors use among Chinese patients.
METHODSBetween October 2011 to February 2014, 174 consecutive patients (135 males; (67.8±11.8) years old) with ACS undergoing PCI in Kiang Wu Hospital, Macau were prospectively enrolled in this study. Oral aspirin and one P2Y(12) receptor inhibitor were administered for 5 days or above after PCI, patients were divided into clopidogrel, prasugrel and ticagrelor groups in accordance with the agent administered. Platelet reactivity of the patients was detected by VerifyNow P2Y(12) reaction unit (PRU); and the high on-treatment platelet reactivity (HPR) and non-HPR were defined as PRU≥208 and PRU<208 respectively. Patients with HPR during clopidogrel therapy were switched either to prasugrel or ticagrelor, or continued the same treatment; and then the platelet reactivity was monitored again.
RESULTSThere were 113 clopidogrel cases (64.9%), 20 prasugrel cases (11.5%) and 41 ticagrelor cases (23.6%). Fifty-seven cases (32.8%) were defined as HPR post P2Y(12) receptor inhibitor use, in which 55 cases (55/113, 48.7%) were treated with clopidogrel. The degree of inhibition of platelet reactivity was significantly different in patients on clopidogrel, prasugrel and ticagrelor therapy, percent inhibition assayed by the VerifyNow P2Y(12) system was 28.2%±23.5%, 61.4%±26.7% and 81.3%±19.8% respectively (P<0.05). Different degree of platelet reactivity was achieved by the 3 P2Y(12) receptor inhibitors at multiple time points. The among-group differences in platelet reactivity became apparent at the early treatment stage (P<0.05). Platelet aggregation decreased significantly in patients switched from clopidogrel to prasugrel or ticagrelor (P<0.05).
CONCLUSIONNovel oral P2Y(12) receptor inhibitors are more effective in inhibiting platelet reactivity in ACS patients, and our results show that novel oral P2Y(12) receptor inhibitors provide a new option for ACS patients with HPR post clopidogrel or high-risk features of ischemic complications, including stent thrombosis and post-PCI ischemic events.
Acute Coronary Syndrome ; Adenosine ; analogs & derivatives ; Aged ; Aspirin ; Blood Platelets ; Female ; Humans ; Male ; Percutaneous Coronary Intervention ; Platelet Aggregation ; Platelet Aggregation Inhibitors ; Platelet Function Tests ; Prasugrel Hydrochloride ; Prospective Studies ; Ticlopidine ; analogs & derivatives
5.Melatonin Attenuates Noise Stress-induced Gastrointestinal Motility Disorder and Gastric Stress Ulcer: Role of Gastrointestinal Hormones and Oxidative Stress in Rats.
Lei ZHANG ; Ji T GONG ; Hu Q ZHANG ; Quan H SONG ; Guang H XU ; Lei CAI ; Xiao D TANG ; Hai F ZHANG ; Fang E LIU ; Zhan S JIA ; Hong W ZHANG
Journal of Neurogastroenterology and Motility 2015;21(2):189-199
BACKGROUND/AIMS: There are increasing evidences for gastrointestinal motility disorder (GIMD) and gastric stress ulcer induced by noise stress. The present study was to investigate the reversed effect of melatonin on GIMD and gastric stress ulcer induced by noise stress and potential mechanism. METHODS: Noise stress was induced on rats, and melatonin (15 mg/kg) was administered to rats by intraperitoneal injection. Differences were assessed in gastric residual rate (GRR), small intestine propulsion rate (SPR), Guth injury score, cortisol, gastrointestinal hormones (calcitonin-gene-related peptide and motilin) and oxidative stress markers (superoxide dismutase and malondialde hyde) in blood plasma as well as gastric mucosa homogenate with or without melatonin. The pathological examination of gastric mucosa was also performed. RESULTS: The GRR and SPR were improved by noise stress compared with control (P < 0.05). The pathological examination and Guth injury score revealed gastric stress ulcer. Moreover, the levels of cortisol, motilin and malondialdehyde in blood plasma and malondialdehyde in gastric mucosa homogenate were increased by noise stress (P < 0.05). CGRP and superoxide dismutase activity in both of blood plasma and gastric mucosa homogenate were significantly decreased (P< 0.05). Furthermore, melatonin reversed changes in GRR, SPR, pathological examination, Guth injury score, cortisol, motilin, CGRP, superoxide dismutase activity and malondialdehyde (P < 0.05). CONCLUSIONS: Melatonin is effective in reversing the GIMD and gastric stress ulcer induced by noise stress. The underlying mechanism may be involved in oxidative stress and gastrointestinal hormones.
Animals
;
Gastric Mucosa
;
Gastrointestinal Hormones*
;
Gastrointestinal Motility*
;
Hydrocortisone
;
Injections, Intraperitoneal
;
Intestine, Small
;
Malondialdehyde
;
Melatonin*
;
Motilin
;
Noise*
;
Oxidative Stress*
;
Plasma
;
Rats*
;
Superoxide Dismutase
;
Ulcer*
6.Early Clinical Outcomes of Short versus Long Proximal Femoral Nail Anti-rotation (PFNA) in the Treatment of Intertrochanteric Fractures
Loh JLM ; Huang DME ; Lei J ; Yeo W ; Wong MK
Malaysian Orthopaedic Journal 2021;15(No.2):115-121
Introduction: Both short and long PFNA are employed to
treat intertrochanteric fractures. Controversy exists in the
choice between the two nails as each implant has specific
characteristics and theoretical advantages. This retrospective
study seeks to examine the operative complication rates and
clinical outcomes of short versus long (Proximal Femoral
Nail Antirotation) PFNA in the treatment of intertrochanteric
fractures.
Materials and methods: Between July 2011 and February
2015, 155 patients underwent PFNA insertion. The decision
on whether to use a short or long PFNA nail, locked or
unlocked, was determined by the attending operating
surgeon. Visual Analogue Pain Score (VAS) Harris Hip
Scores (HHS), Short-form 36 Health Questionnaire (SF-36)
and Parker Mobility Scores (PMS) were collected at six
weeks, six months and one year post-operatively.
Results: A total of 137 (88.4%) patients were successfully
followed-up. Forty-two (30.7%) patients received a short
PFNA. The patients were similar in baseline characteristics
of age, gender, and comorbidities. Operative time was
significantly longer in the short PFNA group (62 ±17 mins)
versus the long PFNA group (56±17). While the patients in
both groups achieved improvement in all outcome measures,
there was no significant difference between the groups in
terms of HHS (61.0 ±16.0 vs 63.0 ±16.8, p=0.443), PMS
(2.3±1.5 vs 2.7±2.1, p=0.545) and VAS (1.7±2.9 vs 1.8 ±2.2
p=0.454). There were 3 (7.1%) and 7 (7.4%) complications
in the short versus long PFNA group, respectively.
Conclusion: Both short and long PFNA had similar clinical
outcomes and complication rates in the treatment of
intertrochanteric fractures in an Asian population.
8.Discussion on implementation of public health standards adopted in centers for disease control and prevention.
L FENG ; B SONG ; Z F ZANG ; N L SUN ; J S WANG ; F LIU ; S W LEI
Chinese Journal of Epidemiology 2018;39(9):1287-1290
As the most important phase in standardization activity, implementation saves as the essence. CDC in China are the major institutions undertaking disease control and prevention. Implementing the standards of public health provides technical basis for CDC to complete the task of disease control and prevention. In the study, spot conversation and questionnaire were used to investigate the implementation of standards on public health in CDC. Results showed that the staff of CDC got to know the standards through the Internet. The departments of CDC which conducted training and sent staff to attend training courses accounted for 50.00%(25/50) and 34.00%(17/50), respectively. State mandatory rule is still the main reason for relevant departments to implement the standards of the public health. Government promotion activities facilitate the implementation of Standards, and the degree of familiarity with Standards affects the implementation as well. The paper summarizes the existing problems, such as the lack of coordination between departments of public health at provincial level or below, lack of access to standards, and the need to strengthen the training of the standard implementation etc. It puts forward some suggestions to strengthen the implementation of public health Standards.
China/epidemiology*
;
Communicable Disease Control/organization & administration*
;
Communicable Diseases/epidemiology*
;
Humans
;
Preventive Health Services/organization & administration*
;
Public Health/standards*
;
Public Health Practice
;
United States
9.Mosquitoes, midges and related arboviruses in southeast Sichuan province.
S SONG ; S H FU ; X X ZHOU ; J K ZHANG ; W LI ; L J LIU ; J S LI ; J WANG ; Y LIN ; X L LI ; Y HE ; W W LEI ; H Y WANG ; B WANG ; X Q LU ; G D LIANG
Chinese Journal of Epidemiology 2018;39(10):1381-1386
Objective: To investigate the distribution patterns of mosquitoes, midges and related arboviruses in Sichuan province. Methods: Blood-sucking insects were collected from houses and pens, using the ultraviolet lights. Mosquito samples were classified according to morphologic characteristics and then stored at liquid nitrogen. All samples were incubated with BHK-21 and C6/36 cells for virus isolation and then detected for their viral genes. Sequences of the virus were identified and analyzed by molecular biological software, such as BioEdit 7.0.5.3, MEGA 6.0. Results: In total, 17 019 mosquitoes from 3 genera and 4 species and 12 700 midges were collected from the southeast regions of Sichuan province in 2016 and 2017. Among them, 79.4% (13 519/17 019) belonged to Culex tritaeniorhynchus with 11.1% (1 897/17 019) as Armigeres subalbatus, 5.5% (930/17 019) were Anopheles sinensis and 4.0% (673/17 019) were Anopheles sinensis 3 virus strains that isolated from Culex tritaeniorhynchus were identified as typeⅠ Japanese encephalitis virus. Seven pools of mosquitoes isolated from Hejiang county were identified Japanese encephalitis virus gene positive through PCR amplification. With 4 pool midges were detected positive for Akabane virus through PCR gene amplification while midges samples didn't have virus isolates. Conclusions: Culex tritaeniorhynchus appeared the predominant species in the southeast regions of Sichuan. Japanese encephalitis virus transmitted by mosquitoes and Akabane virus by midges were prevalent in southeast Sichuan province.
Animals
;
Arboviruses
;
Culicidae
;
Encephalitis Virus, Japanese/isolation & purification*
;
Encephalitis, Japanese/diagnosis*
;
Genes, Viral
;
Nucleic Acid Amplification Techniques
;
Phylogeny
;
Polymerase Chain Reaction
10.Strategy for prevention and control of imported infectious disease.
D F LI ; T SHEN ; Y ZHANG ; H Y WU ; L D GAO ; D M WANG ; Z J LI ; W W YIN ; H J YU ; T SONG ; J M OU ; Q LI ; Q LI ; S Y XIE ; J LEI ; H M LUO
Chinese Journal of Epidemiology 2018;39(10):1291-1297
The process of globalization increases the risk of global transmission of infectious diseases, resulting in pressure for country's prevention and control of imported infectious disease. Based on the risk assessment of disease importation and local transmission, a strategy that conducting importation prevention and routine prevention and control before the importation of disease and taking emergency control measures after the importation of disease was developed. In addition, it is important to take part in global infectious disease response action, aid the countries with outbreak or epidemic to actively decrease the risk of disease importation.
Communicable Diseases
;
Communicable Diseases, Imported/transmission*
;
Disease Outbreaks/prevention & control*
;
Epidemics
;
Global Health
;
Humans
;
Risk Assessment
;
Travel