1.Anterior Cingulate Cortex Mediates Hyperalgesia and Anxiety Induced by Chronic Pancreatitis in Rats.
Dan REN ; Jia-Ni LI ; Xin-Tong QIU ; Fa-Ping WAN ; Zhen-Yu WU ; Bo-Yuan FAN ; Ming-Ming ZHANG ; Tao CHEN ; Hui LI ; Yang BAI ; Yun-Qing LI
Neuroscience Bulletin 2022;38(4):342-358
Central sensitization is essential in maintaining chronic pain induced by chronic pancreatitis (CP), but cortical modulation of painful CP remains elusive. Here, we examined the role of the anterior cingulate cortex (ACC) in the pathogenesis of abdominal hyperalgesia in a rat model of CP induced by intraductal administration of trinitrobenzene sulfonic acid (TNBS). TNBS treatment resulted in long-term abdominal hyperalgesia and anxiety in rats. Morphological data indicated that painful CP induced a significant increase in FOS-expressing neurons in the nucleus tractus solitarii (NTS) and ACC, and some FOS-expressing neurons in the NTS projected to the ACC. In addition, a larger portion of ascending fibers from the NTS innervated pyramidal neurons, the neural subpopulation primarily expressing FOS under the condition of painful CP, rather than GABAergic neurons within the ACC. CP rats showed increased expression of vesicular glutamate transporter 1, and increased membrane trafficking and phosphorylation of the N-methyl-D-aspartate receptor (NMDAR) subunit NR2B and the α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid receptor (AMPAR) subunit GluR1 within the ACC. Microinjection of NMDAR and AMPAR antagonists into the ACC to block excitatory synaptic transmission significantly attenuated abdominal hyperalgesia in CP rats, which was similar to the analgesic effect of endomorphins injected into the ACC. Specifically inhibiting the excitability of ACC pyramidal cells via chemogenetics reduced both hyperalgesia and comorbid anxiety, whereas activating these neurons via optogenetics failed to aggravate hyperalgesia and anxiety in CP rats. Taken together, these findings provide neurocircuit, biochemical, and behavioral evidence for involvement of the ACC in hyperalgesia and anxiety in CP rats, as well as novel insights into the cortical modulation of painful CP, and highlights the ACC as a potential target for neuromodulatory interventions in the treatment of painful CP.
Animals
;
Anxiety/etiology*
;
Chronic Pain/etiology*
;
GABAergic Neurons
;
Gyrus Cinguli/metabolism*
;
Hyperalgesia/metabolism*
;
Pancreatitis, Chronic/pathology*
;
Rats
;
Rats, Sprague-Dawley
;
Receptors, N-Methyl-D-Aspartate/metabolism*
;
Trinitrobenzenesulfonic Acid/toxicity*
2.Genomic and transcriptomic analysis unveils population evolution and development of pesticide resistance in fall armyworm Spodoptera frugiperda.
Furong GUI ; Tianming LAN ; Yue ZHAO ; Wei GUO ; Yang DONG ; Dongming FANG ; Huan LIU ; Haimeng LI ; Hongli WANG ; Ruoshi HAO ; Xiaofang CHENG ; Yahong LI ; Pengcheng YANG ; Sunil Kumar SAHU ; Yaping CHEN ; Le CHENG ; Shuqi HE ; Ping LIU ; Guangyi FAN ; Haorong LU ; Guohai HU ; Wei DONG ; Bin CHEN ; Yuan JIANG ; Yongwei ZHANG ; Hanhong XU ; Fei LIN ; Bernard SLIPPERS ; Alisa POSTMA ; Matthew JACKSON ; Birhan Addisie ABATE ; Kassahun TESFAYE ; Aschalew Lemma DEMIE ; Meseret Destaw BAYELEYGNE ; Dawit Tesfaye DEGEFU ; Feng CHEN ; Paul K KURIA ; Zachary M KINYUA ; Tong-Xian LIU ; Huanming YANG ; Fangneng HUANG ; Xin LIU ; Jun SHENG ; Le KANG
Protein & Cell 2022;13(7):513-531
The fall armyworm (FAW), Spodoptera frugiperda, is a destructive pest native to America and has recently become an invasive insect pest in China. Because of its rapid spread and great risks in China, understanding of FAW genetic background and pesticide resistance is urgent and essential to develop effective management strategies. Here, we assembled a chromosome-level genome of a male FAW (SFynMstLFR) and compared re-sequencing results of the populations from America, Africa, and China. Strain identification of 163 individuals collected from America, Africa and China showed that both C and R strains were found in the American populations, while only C strain was found in the Chinese and African populations. Moreover, population genomics analysis showed that populations from Africa and China have close relationship with significantly genetic differentiation from American populations. Taken together, FAWs invaded into China were most likely originated from Africa. Comparative genomics analysis displayed that the cytochrome p450 gene family is extremely expanded to 425 members in FAW, of which 283 genes are specific to FAW. Treatments of Chinese populations with twenty-three pesticides showed the variant patterns of transcriptome profiles, and several detoxification genes such as AOX, UGT and GST specially responded to the pesticides. These findings will be useful in developing effective strategies for management of FAW in China and other invaded areas.
Animals
;
China
;
Genomics
;
Humans
;
Male
;
Pesticides
;
Spodoptera/genetics*
;
Transcriptome
3.Cutaneous mucormycosis of the lower extremity leading amputation in two diabetic patients
Kathleen M. COERDT ; Elizabeth G. ZOLPER ; Amy G. STARR ; Kenneth L. FAN ; Christopher E. ATTINGER ; Karen K. EVANS
Archives of Plastic Surgery 2021;48(2):231-236
Mucormycosis is an invasive, rapidly progressive, life-threatening fungal infection, with a propensity for diabetic, immunosuppressed, and trauma patients. The classic rhinocerebral variation is most common in diabetic patients. While the cutaneous form is usually caused by direct inoculation in immunocompetent patients. Cutaneous mucormycosis manifests in soft tissue and risks involvement of underlying structures. Tibial osteomyelitis can also occur secondary to cutaneous mucormycosis but is rare. Limb salvage is typically successful after lower extremity cutaneous mucormycosis even when the bone is involved. Herein, we report two cases of lower extremity cutaneous mucormycosis in diabetic patients that presented as acute worsening of chronic pretibial ulcers. Despite aggressive antifungal therapy and surgical debridement, both ultimately required amputation. Such aggressive presentation has not been reported in the absence of major penetrating trauma, recent surgery, or burns.
4.Management of complex surgical wounds of the back: identifying an evidence-based approach
Elizabeth G. ZOLPER ; Meher A. SALEEM ; Kevin G. KIM ; Mark D. MISHU ; Sarah R. SHER ; Christopher E. ATTINGER ; Kenneth L. FAN ; Karen K. EVANS
Archives of Plastic Surgery 2021;48(6):599-606
Background:
Postoperative dehiscence and surgical site infection after spinal surgery can carry serious morbidity. Multidisciplinary involvement of plastic surgery is essential to minimizing morbidity and achieving definitive closure. However, a standardized approach is lacking. The aim of this study was to identify effective reconstructive interventions for the basis of an evidence-based management protocol.
Methods:
A retrospective review was performed at a single tertiary institution for 45 patients who required 53 reconstruction procedures with plastic surgery for wounds secondary to spinal surgery from 2010 to 2019. Statistical analysis was performed for demographics, comorbidities, and treatment methods. Primary outcomes were postoperative complications, including dehiscence, seroma, and infection. The secondary outcome was time to healing.
Results:
The overall complication rate was 32%, with dehiscence occurring in 17%, seroma in 15% and infection in 11% of cases. Median follow-up was 10 months (interquartile range, 4–23). Use of antibiotic beads did not affect rate of infection occurrence after wound closure (P=0.146). Use of incisional negative pressure wound therapy (iNPWT) was significant for reduced time to healing (P=0.001). Patients treated without iNPWT healed at median of 67.5 days while the patients who received iNPWT healed in 33 days. Demographics and comorbidities between these two groups were similar.
Conclusions
This data provides groundwork for an evidence-based approach to soft tissue reconstruction and management of dehiscence after spinal surgery. Timely involvement of plastic surgery in high-risk patients and utilization of evidence-based interventions such as iNPWT are essential for improving outcomes in this population.
5.Correction to: EGFR signaling augments TLR4 cell surface expression and function in macrophages via regulation of Rab5a activation.
Jing TANG ; Bowei ZHOU ; Melanie J SCOTT ; Linsong CHEN ; Dengming LAI ; Erica K FAN ; Yuehua LI ; Qiang WU ; Timothy R BILLIAR ; Mark A WILSON ; Ping WANG ; Jie FAN
Protein & Cell 2020;11(8):618-619
In the original publication the bands in Fig. 1J and Fig. 2B were not visible. The correct versions of Fig. 1J and Fig. 2B are provided in this correction.
6.Changing Prevalence of Allergic Diseases in the Asia-Pacific Region.
Gary W K WONG ; Ting Fan LEUNG ; Fanny W S KO
Allergy, Asthma & Immunology Research 2013;5(5):251-257
Asia-Pacific is one of the most densely populated regions of the world and is experiencing rapid economic changes and urbanization. Environmental pollution is a significant problem associated with the rapid modernization of many cities in South Asia. It is not surprising that the prevalences of asthma and allergies are increasing rapidly, although the underlying reasons remain largely unknown. Many studies from this region have documented the changing prevalence of allergic diseases in various parts of the world. However, the methodologies used were neither standardized nor validated, making the results difficult to evaluate. The International Study of Asthma and Allergies in Childhood (ISAAC) has provided a global epidemiology map of asthma and allergic diseases, as well as the trend of changes in the prevalence of these diseases. Allergic sensitization is extremely common in many Asian communities. However, the prevalence of allergic diseases remains relatively rare. The rapid urbanization in the region, which increases environmental pollution and can affect the rural environment, will likely increase the prevalence of asthma and allergies in Asia.
Asia
;
Asian Continental Ancestry Group
;
Asthma
;
Environmental Pollution
;
Humans
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Hypersensitivity
;
Prevalence
;
Social Change
;
Urbanization
7.Neurofibromatosis type 2 and auditory brainstem implantation.
Hong-jun XIAO ; Dennis K K AU ; Hui YAU ; Chun-kuen CHOW ; Yiu-wah FAN ; William Ignace WEI
Chinese Medical Journal 2007;120(16):1456-1459
8.A field epidemiological study on the risk factors of injury caused by typhoon.
Zhen-Yu GONG ; Cheng-Liang CHAI ; Chun-Yu TU ; Jun-Fen LIN ; Yi GAO ; Yin-Wei QIU ; Guang ZENG ; Robert E FONTAINE ; C K LEE ; Fan HE ; Kun CHEN
Chinese Journal of Epidemiology 2006;27(9):773-776
OBJECTIVETo determine the risk factors involved in the typhoon episodes and to put forward and evaluate the intervention measures.
METHODSWe defined a confirmed injury case as: 'a person with fall,scalpel and stab, collision, drowning, injuries and trauma due to flying debris and building collapse, asphyxiation due to entrapment in collapsed buildings by typhoon from 0 am,August 12 to 6 pm, August 14 2004' and a death case as: 'a person with fall, scalpel and stab, collision, drowning, injuries and trauma due to flying debris and building collapse, asphyxiation due to entrapment in collapsed buildings by typhoon from 0 am, August 12 to 12 am, August 18 2004'. We investigated all hospitalized injured cases in ten hospitals and telephoned to those who were not hospitalized and the cases of death. We did case-control study with 1 pair versus 2 cases. 74 cases were selected in ten hospitals. The controls were neighbors of the controls matched by occupation, sex, village, and within 5 years of age without injury in this typhoon. We asked the cases and the controls on their alertness regarding typhoon and what actions taken when typhoon arrived.
RESULTSThere were 392 injury cases in all ten hospitals and 50 death cases. The attack rate of injury was 27.3 per 100 000. The fatal rate was 11.3% with the death rate 3.1 per 100 000. We investigated 209 injury cases and 31 death cases. The number of cases who were injured from 1 to 6 hours before typhoon landing accounted for 64.6% (155) of all cases. The peak of epidemic curve was 4 hours before the landing of typhoon. Data on the analysis of 74 cases and 148 controls revealed that 42% (31) of the cases were outside their homes before and during typhoon compared to 15% (22) of the controls (OR = 3.9, 95% CI: 1.9-7.7). Compared with 20% (30) control persons (OR = 17,95% CI: 4.2-68). 28% (21) cases did not receive the alert of typhoon before it arrived compared with 18% (27) control persons (OR = 3.3, 95% CI:1.3-8.6). 53% (39) of the cases did not pay attention to the alert of typhoon before typhoon arrived.
CONCLUSIONStaying outdoor, not receiving or did not take seriously about the alert of typhoon seemed to be the risk factors of injury by the typhoon episode, suggesting that the government should increase the emergency preparedness and to raise the awareness on risks associated with typhoon.
Cause of Death ; China ; epidemiology ; Cyclonic Storms ; Hospitalization ; Humans ; Risk Factors ; Wounds and Injuries ; epidemiology ; mortality
9.Corticosteroids are not present in a traditional Chinese medicine formulation for atopic dermatitis in children.
Kam Lun E HON ; Vivian W Y LEE ; Ting-Fan LEUNG ; Kenneth K C LEE ; Andrew K W CHAN ; Tai-Fai FOK ; Ping-Chung LEUNG
Annals of the Academy of Medicine, Singapore 2006;35(11):759-763
INTRODUCTIONTraditional Chinese medicine (TCM) has been used as an alternative in treating children with atopic dermatitis (AD) but its efficacy and potential side effects are debatable. We recently used a TCM capsule (PentaHerbs) on 9 children and observed significant reductions in clinical scores of disease severity. However, there have been concerns that the therapeutic effects of many forms of TCM are due to the presence of corticosteroids. The purpose of this study was to evaluate if common corticosteroids are present in PentaHerbs capsules.
MATERIALS AND METHODSPentaHerbs powder was analysed with thin-layer chromatography, infra-red spectrophotometry and liquid chromatography mass spectrometry.
RESULTSHydrocortisone, prednisolone, fludrocortisone and dexamethasone were not detected in the PentaHerbs capsules.
CONCLUSIONCorticosteroids are not present in the 5 familiar herbs that were earlier shown to have efficacy on AD.
Child ; Chromatography, Thin Layer ; Dermatitis, Atopic ; drug therapy ; Drug Combinations ; Drugs, Chinese Herbal ; chemistry ; therapeutic use ; Glucocorticoids ; analysis ; therapeutic use ; Humans ; Mass Spectrometry ; Pilot Projects ; Spectrophotometry, Infrared
10.Updates on the surgical management of paediatric cataract with primary intraocular lens implantation.
Dorothy S P FAN ; Wilson W K YIP ; Christopher B O YU ; Srinivas K RAO ; Dennis S C LAM
Annals of the Academy of Medicine, Singapore 2006;35(8):564-570
With the advent of modern surgical techniques, paediatric cataract has become much more manageable. Intraocular lens (IOL) implantation is the standard of care for patients over the age of 2 years. The use of IOL in young infants is still controversial. In addition, there are still unresolved issues, such as the minimum age at which IOL can be safely implanted, IOL power selection and IOL power calculation. The current trends in the management of the above challenges are discussed. Although numerous reports on the prevention and management of posterior capsule opacification have been published, there are ongoing intensive debates and research. Long-term postoperative complications like glaucoma and rhegmatogenous retinal detachment are problems that cannot be overemphasised and these issues are also reviewed.
Cataract
;
congenital
;
Cataract Extraction
;
adverse effects
;
methods
;
Child
;
Child, Preschool
;
Humans
;
Infant
;
Infant, Newborn
;
Lens Implantation, Intraocular
;
adverse effects
;
methods
;
Lenses, Intraocular
;
Postoperative Complications
;
prevention & control
;
Refraction, Ocular

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