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1.
J Clin Endocrinol Metab ; 109(4): 1051-1059, 2024 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-37933705

RESUMEN

CONTEXT: The components of metabolic syndrome (MetS) are interrelated and associated with renal complications in patients with type 2 diabetes (T2D). OBJECTIVE: We aimed to reveal prevalent metabolic profiles in patients with T2D and identify which metabolic profiles were risk markers for renal progression. METHODS: A total of 3556 participants with T2D from a hospital (derivation cohort) and 931 participants with T2D from a community survey (external validation cohort) were included. The primary outcome was the onset of diabetic kidney disease (DKD), and secondary outcomes included estimated glomerular filtration rate (eGFR) decline, macroalbuminuria, and end-stage renal disease (ESRD). In the derivation cohort, clusters were identified using the 5 components of MetS, and their relationships with the outcomes were assessed. To validate the findings, participants in the validation cohort were assigned to clusters. Multivariate odds ratios (ORs) of the primary outcome were evaluated in both cohorts, adjusted for multiple covariates at baseline. RESULTS: In the derivation cohort, 6 clusters were identified as metabolic profiles. Compared with cluster 1, cluster 3 (severe hyperglycemia) had increased risks of DKD (hazard ratio [HR] [95% CI]: 1.72 [1.39-2.12]), macroalbuminuria (2.74 [1.84-4.08]), ESRD (4.31 [1.16-15.99]), and eGFR decline [P < .001]; cluster 4 (moderate dyslipidemia) had increased risks of DKD (1.97 [1.53-2.54]) and macroalbuminuria (2.62 [1.61-4.25]). In the validation cohort, clusters 3 and 4 were replicated to have significantly increased risks of DKD (adjusted ORs: 1.24 [1.07-1.44] and 1.39 [1.03-1.87]). CONCLUSION: We identified 6 prevalent metabolic profiles in patients with T2D. Severe hyperglycemia and moderate dyslipidemia were validated as significant risk markers for DKD.


Asunto(s)
Diabetes Mellitus Tipo 2 , Nefropatías Diabéticas , Dislipidemias , Hiperglucemia , Fallo Renal Crónico , Síndrome Metabólico , Humanos , Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/epidemiología , Fallo Renal Crónico/etiología , Fallo Renal Crónico/complicaciones , Nefropatías Diabéticas/epidemiología , Nefropatías Diabéticas/etiología , Síndrome Metabólico/complicaciones , Síndrome Metabólico/epidemiología , Tasa de Filtración Glomerular , Metaboloma , Dislipidemias/epidemiología , Dislipidemias/complicaciones , Hiperglucemia/complicaciones
2.
PLoS Negl Trop Dis ; 17(8): e0011546, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-37647577

RESUMEN

BACKGROUND: The order Rickettsiales contains a group of vector-borne gram-negative obligate intracellular bacteria, which often cause human emerging infectious diseases and economic losses for dairy and meat industries. The purpose of this study is to investigate the distribution of the pathogens including Rickettsia spp., Anaplasma spp., and Ehrlichia spp. in the order Rickettsiales in ticks from Yueyang, a prefecture-level city of Hunan Province in Sothern China, and assess the potentiality of transovarial transmission of these rickettsial organisms. METHODS: Ticks were collected from cattle in a farm in Yueyang City and the tick DNA was used as template to amplify the htrA, rrs, gltA, ompA and ompB genes of Rickettsia as well as rrs and groEL genes of Anaplasma and Ehrlichia. RESULTS: All ticks (465) collected were the cattle tick, Rhipicephalus microplus. PCR showed the minimum infection rate (MIR) was 1.5% (7/465) for Candidatus Rickettsia xinyangensis, 1.9% (9/465) for C. Anaplasma boleense, 1.3% (6/465) for Anaplasma platys, 0.6% (3/465) for A. marginale, and 1.17% (2/465) for each of A. bovis, Ehrlichia minasensis, and a non-classified Ehrlichia sp. A human pathogen, C. Rickettsia xinyangensis and A. platys were detected in 100% (3/3) and 33.3% (2/6) laboratory-hatched larval pools from infected females respectively. CONCLUSION: Our study revealed a diversity of pathogenic rickettsial species in R. microplus ticks from Hunan Province suggesting a threat to people and animals in China. This study also provided the first molecular evidence for the potential transovarial transmission of C. Rickettsia xinyangensis and A. platys in R. microplus, indicating that R. microplus may act as the host of these two pathogens.


Asunto(s)
Escarabajos , Rhipicephalus , Rickettsia , Animales , Femenino , Humanos , Rickettsia/genética , Larva , Ehrlichia/genética , Rickettsiales , Anaplasma/genética
3.
Cancer Res Commun ; 3(5): 933-942, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-37377889

RESUMEN

Currently, approximately 30%-55% of the patients with non-small cell lung cancer (NSCLC) develop recurrence due to minimal residual disease (MRD) after receiving surgical resection of the tumor. This study aims to develop an ultrasensitive and affordable fragmentomic assay for MRD detection in patients with NSCLC. A total of 87 patients with NSCLC, who received curative surgical resections (23 patients relapsed during follow-up), enrolled in this study. A total of 163 plasma samples, collected at 7 days and 6 months postsurgical, were used for both whole-genome sequencing (WGS) and targeted sequencing. WGS-based cell-free DNA (cfDNA) fragment profile was used to fit regularized Cox regression models, and leave-one-out cross-validation was further used to evaluate models' performance. The models showed excellent performances in detecting patients with a high risk of recurrence. At 7 days postsurgical, the high-risk patients detected by our model showed an increased risk of 4.6 times, while the risk increased to 8.3 times at 6 months postsurgical. These fragmentomics determined higher risk compared with the targeted sequencing-based circulating mutations both at 7 days and 6 months postsurgical. The overall sensitivity for detecting patients with recurrence reached 78.3% while using both fragmentomics and mutation results from 7 days and 6 months postsurgical, which increased from the 43.5% sensitivity by using only the circulating mutations. The fragmentomics showed great sensitivity in predicting patient recurrence compared with the traditional circulating mutation, especially after the surgery for early-stage NSCLC, therefore exhibiting great potential to guide adjuvant therapeutics. Significance: The circulating tumor DNA mutation-based approach shows limited performance in MRD detection, especially for landmark MRD detection at an early-stage cancer after surgery. Here, we describe a cfDNA fragmentomics-based method in MRD detection of resectable NSCLC using WGS, and the cfDNA fragmentomics showed a great sensitivity in predicting prognosis.


Asunto(s)
Carcinoma de Pulmón de Células no Pequeñas , Ácidos Nucleicos Libres de Células , ADN Tumoral Circulante , Neoplasias Pulmonares , Humanos , Neoplasias Pulmonares/diagnóstico , Carcinoma de Pulmón de Células no Pequeñas/diagnóstico , Ácidos Nucleicos Libres de Células/genética , Neoplasia Residual/diagnóstico , ADN Tumoral Circulante/genética
4.
Ticks Tick Borne Dis ; 14(3): 102137, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-36738629

RESUMEN

Ticks pose a serious threat to public health as carriers and often vectors of zoonotic pathogens. There are few systematic studies on the prevalence and genetic diversity of tick-borne bacterial pathogens in Western China. In this study, 465 ticks were collected from free-ranging sheep in Gansu Province in China. Ticks were divided into 113 pools and tick DNA was extracted from these ticks. PCR assays were performed using specific primers to screen for tick-borne pathogens as well as sequence analysis based on the 16S rRNA (rrs), ompB, gltA, ompA genes for Rickettsia, rrs, groEL genes for Anaplasma, and ssrA and rpoB genes for Bartonella. The PCR results showed that the minimum infection rates with Rickettsia, Anaplasma, and Bartonella were 16.8% (78/465), 18.9% (88/465), and 0.9% (4/465), respectively. Sequence analysis based on the concatenated sequences of rrs-ompB-gltA-ompA indicated that the Rickettsia species identified in the ticks belonged to Rickettsia raoultii, Rickettsia slovaca, and Rickettsia sibirica, respectively; phylogenetic analysis based on the groEL gene showed that all Anaplasma strains identified were Anaplasma ovis; and phylogenetic analysis based on the ssrA and rpoB genes indicated that all Bartonella strains in the ticks belonged to Bartonella melophagi. The results of this study showed that ticks in Gansu Province harbored multiple pathogens that may cause rickettsial diseases and bartonellosis. These diseases were neglected in the area and physicians and public health workers need to pay attention to their diagnoses to prevent human infection.


Asunto(s)
Bartonella , Ixodidae , Rickettsia , Garrapatas , Animales , Ovinos , Humanos , Garrapatas/microbiología , Anaplasma/genética , Filogenia , ARN Ribosómico 16S/genética , Ixodidae/microbiología , Rickettsia/genética , Bartonella/genética , China/epidemiología
5.
One Health ; 16: 100498, 2023 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-36844977

RESUMEN

Hemoplasmas can cause severe hemolytic anemia in humans. To explore the genetic diversity and the potential transmission routes of hemoplasmas among bat population, bats and bat-ectoparasites including bat-flies, bat-mites, and bat-ticks were collected in Eastern and Central China from 2015 to 2021, and tested with PCR for hemoplasmas 16S rRNA gene. Based on 16S rRNA PCR, 18.0% (103/572) adult bats were positive for hemoplasmas, but none of 11 fetuses from hemoplasmas-positive pregnant bats was positive for hemoplasmas. These results indicated that adult bats had a high prevalence of hemoplasma, but vertical transmission of hemoplasmas did not occurr in the bats. Based on the 16S rRNA gene PCR, the minimum infection rate of bat-ectoparasite for hemoplasmas was 4.0% (27/676), suggesting that bat-ectoparasite also had a high prevalence for hemoplasmas. Phylogenetic analysis revealed that bat hemoplasmas from this study clustered into 4 genotypes (I-IV). Genotype I clustered together with hemoplasmas identified in bats from America. Genotype II shared high similarity with a human-pathogenic hemoplasma Candidatus Mycoplasma haemohominis. Genotype III and IV were unique, representing 2 new hemoplasma genotypes. Only genotype I was identified in both bats and all bat-ectoparasites including bat-flies, bat-mites, and bat-ticks. In conclusion, bats and bat-ectoparasites from China harbored abundant genetically diverse hemoplasmas including potential human-pathogenic hemoplasmas, indicating bats and bat-ectoparasites may play important roles in the maintenance and transmission of hemoplasmas in the natural foci.

7.
Transbound Emerg Dis ; 69(6): 3906-3916, 2022 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-36355627

RESUMEN

Bartonella are vector-borne gram-negative facultative intracellular bacteria causing emerging infectious diseases worldwide, and two thirds of known Bartonella species are carried by rodents. We captured rodents, shrews and rodent ectoparasitic mites in rural areas of Qingdao City, Shandong Province, China from 2012 to 2021 and used the animal spleen tissues for the PCR amplification of Bartonella gltA and rpoB genes. PCR showed 9.4% (40/425) rodents, and 5.1% (12/235) shrews were positive for Bartonella. Seven Bartonella species including three novel species were identified in five rodent species and one shrew species, indicating the abundance and genetic diversity of Bartonella in rodents and shrews. The infection rate of each Bartonella species in the animal species was as below: novel Candidatus Bartonella crocidura in shrews Crocidura lasiura (5.1%, 12/235); novel Candidatus Bartonella cricetuli in hamsters Tscherskia triton (20%, 9/45); novel Candidatus Bartonella muris in striped field mice Apodemus agrarius (4.2%, 7/168) and house mice Mus musculus (1.5%, 2/135); Bartonella fuyuanensis in striped field mice (8.9%, 15/168) and house mice (0.7%, 1/135); Bartonella rattimassiliensis and Bartonella tribocorum in brown rats Rattus norvegicus (6.7%, 3/45 and 4.2%, 2/45, respectively); Bartonella queenslandensis in Chinese white-bellied rat Niviventer confucianus (12.5%, 1/8). These results suggest that Bartonella infected a variety of rodent and shrew species with high infection rate, but each Bartonella specie is restricted to infect only one or a few genetically closely related rodent species. In addition, Candidatus Bartonella cricetuli, Candidatus Bartonella muris and Bartonella coopersplainsensis were found in chigger Walchia micropelta (33.3%, 3/9), and B. fuyuanensis were found in chigger Leptotrombidium intermedium (4.1%, 1/24), indicating chiggers may be reservoirs of Bartonella. In conclusion, abundant genetic diversified Bartonella species are found to infect rodents, shrews and chiggers, but each Bartonella species has a strict rodent animal host specificity; and chigger mites may play a role in Bartonella transmission.


Asunto(s)
Infecciones por Bartonella , Bartonella , Enfermedades de los Roedores , Ratas , Animales , Roedores/microbiología , Musarañas/microbiología , Especificidad del Huésped , Reservorios de Enfermedades/microbiología , Bartonella/genética , Infecciones por Bartonella/epidemiología , Infecciones por Bartonella/veterinaria , Infecciones por Bartonella/microbiología , Murinae , China/epidemiología , Variación Genética , Enfermedades de los Roedores/epidemiología , Enfermedades de los Roedores/microbiología
8.
Emerg Infect Dis ; 28(12): 2524-2527, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-36417960

RESUMEN

We sequenced DNA from spleens of rodents captured in rural areas of Qingdao, East China, during 2013-2015. We found 1 Apodemus agrarius mouse infected with Rickettsia conorii, indicating a natural Mediterranean spotted fever foci exists in East China and that the range of R. conorii could be expanding.


Asunto(s)
Fiebre Botonosa , Ratones , Animales , Fiebre Botonosa/epidemiología , Fiebre Botonosa/microbiología , Roedores , China/epidemiología
9.
PLoS Negl Trop Dis ; 16(8): e0010698, 2022 08.
Artículo en Inglés | MEDLINE | ID: mdl-36037170

RESUMEN

SFTSV, a tick-borne bunyavirus causing a severe hemorrhagic fever termed as severe fever with thrombocytopenia syndrome (SFTS). To evaluate the potential role of rodents and its ectoparasitic chiggers in the transmission of SFTSV, we collected wild rodents and chiggers on their bodies from a rural area in Qingdao City, Shandong Province, China in September 2020. PCR amplification of the M and L segments of SFTSV showed that 32.3% (10/31) of rodents and 0.2% (1/564) of chiggers (Leptotrombidium deliense) from the rodents were positive to SFTSV. Our results suggested that rodents and chiggers may play an important role in the transmission of SFTSV, although the efficiency of chiggers to transmit SFTSV needs to be further investigated experimentally.


Asunto(s)
Infecciones por Bunyaviridae , Infestaciones por Ácaros , Phlebovirus , Garrapatas , Trombiculidae , Animales , China/epidemiología , Fiebre , Phlebovirus/genética , Roedores
10.
Expert Rev Vaccines ; 21(10): 1465-1473, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-35861138

RESUMEN

BACKGROUND: As of 2022, inactivated SARS-CoV-2 vaccines had been used in more than 91 countries. However, limited real world information was available on the immune responses of the inactivated SARS-CoV-2 vaccine. METHODS: We used SARS-CoV-2 pseudovirues to determine the neutralizing antibodies (NAbs) to wild type and several global variants and utilized enzyme-linked immunosorbent assay to investigate IFN-γ-secreting T-cell responses to SARS-CoV-2 among 240 vaccinated individuals after two doses of inactivated vaccine in China. RESULTS: A majority of the vaccinated (>90%) developed robust NAbs and T-cell responses to SARS-CoV-2 in the first two months after the second dose. After six months, only 37.0% and 44.0% of vaccinees had NAbs and T-cell immunity to SARS-CoV-2, respectively. Immune serum retained most of its neutralizing potency against the Alpha and Iota variants, but lost significant neutralizing potency against the Beta, Kappa, Delta, and Omicron variants. Only 40% of vaccine-sera retained low-level neutralization activities to Omicron, with a 14.7-fold decrease compared to the wild type. CONCLUSION: The inactivated SARS-CoV-2 vaccine stimulated robust NAbs and T-cell immune responses in the first two months after the second dose but the immune effect dropped rapidly, highlighing that a third dose or additional booster immunizations may be required to boost immunity against SARS-CoV-2.


Asunto(s)
COVID-19 , Vacunas Virales , Anticuerpos Neutralizantes , Anticuerpos Antivirales , COVID-19/prevención & control , Vacunas contra la COVID-19 , Humanos , Sueros Inmunes , Inmunidad Celular , SARS-CoV-2 , Vacunas de Productos Inactivados
11.
Transbound Emerg Dis ; 69(4): e845-e858, 2022 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-34695291

RESUMEN

Bartonella species are facultative intracellular bacteria and recognized worldwide as emerging zoonotic pathogens. Bartonella were isolated or identified by polymerase chain reaction (PCR) in bats and their ectoparasites worldwide, whereas the association between them was scarce, especially in Asia. In this study, a retrospective analysis with frozen samples was carried out to identify the genetic diversity of Bartonella in bats and their ectoparasites and to investigate the relationships of Bartonella carried by bats and their ectoparasites. Bats and their ectoparasites (bat flies and bat mites) were collected from caves in Hubei Province, Central China, from May 2018 to July 2020. Bartonella were screened by PCR amplification and sequencing of three genes (gltA, rpoB, and ftsZ). Bats, bat flies, and bat mites carried diverse novel Bartonella genotypes with a high prevalence. The sharing of some Bartonella genotypes between bats and bat flies or bat mites indicated a potential role of bat flies and bat mites as vectors of bartonellae, while the higher genetic diversity of Bartonella in bat flies than that in bats might be due to the vertical transmission of this bacterium in bat flies. Therefore, bat flies might also act as reservoirs of Bartonella. In addition, human-pathogenic B. mayotimonesis was identified in both bats and their ectoparasites, which expanded our knowledge on the geographic distribution of this bacterium and suggested a potential bat origin with bat flies and bat mites playing important roles in the maintenance and transmission of Bartonella.


Asunto(s)
Infecciones por Bartonella , Bartonella , Quirópteros , Dípteros , Animales , Bartonella/genética , Infecciones por Bartonella/epidemiología , Infecciones por Bartonella/microbiología , Infecciones por Bartonella/veterinaria , Genotipo , Humanos , Filogenia , Estudios Retrospectivos
12.
One Health ; 13: 100332, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-34604493

RESUMEN

The emerging coronavirus diseases such as COVID-19, MERS, and SARS indicated that animal coronaviruses (CoVs) spillover to humans are a huge threat to public health. Therefore, we needed to understand the CoVs carried by various animals. Wild hedgehogs were collected from rural areas in Wuhan and Xianning cities in Hubei Province for analysis of CoVs. PCR results showed that 5 out of 51 (9.8%) hedgehogs (Erinaceus amurensis) were positive to CoVs in Hubei Province with 3 samples from Wuhan City and 2 samples from Xianning City. Phylogenetic analysis based on the partial sequence of RNA-dependent RNA polymerase showed that the CoVs from hedgehogs are classified into Merbecovirus of the genus Betacoronavirus; the hedgehog CoVs formed a phylogenetic sister cluster with human MERS-CoVs and bat MERS-related CoVs. Among the 12 most critical residues of receptor binding domain in MERS-CoV for binding human Dipeptidyl peptidase 4, 3 residuals were conserved between the hedgehog MERS-related CoV obtained in this study and the human MERS-CoV. We concluded that hedgehogs from Hubei Province carried MERS-related CoVs, indicating that hedgehogs might be important in the evolution and transmission of MERS-CoVs, and continuous surveillance of CoVs in hedgehogs was important.

13.
Thorac Cancer ; 12(22): 3046-3052, 2021 11.
Artículo en Inglés | MEDLINE | ID: mdl-34626082

RESUMEN

BACKGROUND: Tracheal tumors are rare. The aim of this case series was to investigate airway selection during radical surgery for patients with tracheal tumors. METHODS: Here, we performed a retrospective case review of patients with tracheal tumors who underwent tracheal surgery in our center. A total of 37 cases, including 26 patients with primary tracheal tumors and 11 cases with advanced thyroid cancer, were enrolled into the study. Baseline characteristics and differential prognosis of included patients were estimated. We summarize the strategies for intraoperative airway selection and analyze the risk factors associated with delayed extubation. RESULTS: There is a trend for primary tracheal tumors to appear toward the upper (9 of 26) and middle third (9 of 26) of the trachea, followed by the lower third airway (8 of 26). Advanced thyroid cancers occur most frequently in the upper trachea (7 of 11) and then the middle trachea (4 of 11). All primary and secondary patients underwent R0 resection. Minor histological subtypes were found to correlate with a poor prognosis. Extracorporeal support and tracheotomy intubation were applied in high-risk cases, and a total of 32 patients achieved intrathoracic intubation during the surgical process. Intensive care unit (ICU) delay (>1 day) was observed among 25 patients, which were not enriched in cases who underwent cross-field endotracheal intubation. Additionally, temporal suboptimal oxygenation (SpO2 < 95%) was an independent risk factor of ICU delay. CONCLUSIONS: Airway selection plays an important role in successful tracheal surgery, and an appropriate ventilation routine depends on the patient and a surgical process which is safe and effective.


Asunto(s)
Manejo de la Vía Aérea/métodos , Neoplasias de la Tráquea/cirugía , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Saturación de Oxígeno , Estudios Retrospectivos , Factores de Riesgo
14.
PLoS Negl Trop Dis ; 15(3): e0009270, 2021 03.
Artículo en Inglés | MEDLINE | ID: mdl-33784301

RESUMEN

BACKGROUND: Scrub typhus, caused by Orientia tsutsugamushi, an obligate intracellular gram-negative bacterium, along with hemorrhagic fever with renal syndrome (HFRS), caused by hantaviruses, are natural-focus infectious diseases prevalent in Shandong Province, China. Both diseases have similar clinical manifestations in certain disease stages and similar epidemic seasons, which has caused difficulties for physicians in distinguishing them. The aim of this study was to investigate whether misdiagnosis of scrub typhus as HFRS occurred in patients in Shandong Province. METHODS: Serum samples (N = 112) of clinically suspected HFRS patients from 2013 to 2014 in Shandong Province were analyzed with enzyme-linked immunosorbent assay (ELISA) for antibodies to both hantavirus and Orientia tsutsugamushi. RESULTS: ELISA showed that 56.3% (63/112) and 8.0% (9/112) of clinically suspected HFRS patients were IgM antibody positive to hantavirus and O. tsutsugamushi, respectively. Among the hantavirus IgM antibody positive patients, 7.9% (5/63) were also IgM antibody positive to O. tsutsugamushi. Among the hantavirus IgM antibody negative sera, 8.2% (4/49) of sera were positive to O. tsutsugamushi. CONCLUSIONS: We concluded that some scrub typhus patients were misdiagnosed as HFRS and co-infection of scrub typhus and HFRS might exist in China. Due to the different treatments for scrub typhus and HFRS, physicians should carefully differentiate between scrub typhus and HFRS and consider administering anti-rickettsia antibiotics if treatment for HFRS alone does not work.


Asunto(s)
Anticuerpos Antibacterianos/sangre , Anticuerpos Antivirales/sangre , Coinfección/diagnóstico , Errores Diagnósticos , Fiebre Hemorrágica con Síndrome Renal/diagnóstico , Tifus por Ácaros/diagnóstico , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , China , Coinfección/microbiología , Diagnóstico Diferencial , Ensayo de Inmunoadsorción Enzimática , Femenino , Orthohantavirus/inmunología , Fiebre Hemorrágica con Síndrome Renal/complicaciones , Humanos , Inmunoglobulina M/sangre , Masculino , Persona de Mediana Edad , Orientia tsutsugamushi/inmunología , Tifus por Ácaros/complicaciones , Adulto Joven
15.
PLoS Negl Trop Dis ; 15(3): e0009113, 2021 03.
Artículo en Inglés | MEDLINE | ID: mdl-33735240

RESUMEN

Bats can harbor zoonotic pathogens causing emerging infectious diseases, but their status as hosts for bacteria is limited. We aimed to investigate the distribution, prevalence and genetic diversity of Borrelia in bats and bat ticks in Hubei Province, China, which will give us a better understanding of the risk of Borrelia infection posed by bats and their ticks. During 2018-2020, 403 bats were captured from caves in Hubei Province, China, 2 bats were PCR-positive for Borrelia. Sequence analysis of rrs, flaB and glpQ genes of positive samples showed 99.55%-100% similarity to Candidatus Borrelia fainii, a novel human-pathogenic relapsing fever Borrelia species recently reported in Zambia, Africa and Eastern China, which was clustered together with relapsing fever Borrelia species traditionally reported only in the New World. Multilocus sequence typing (MLST) and pairwise genetic distances further confirmed the Borrelia species in the bats from Central China as Candidatus Borrelia fainii. No Borrelia DNA was detected in ticks collected from bats. The detection of this human-pathogenic relapsing fever Borrelia in bats suggests a wide distribution of this novel relapsing fever Borrelia species in China, which may pose a threat to public health in China.


Asunto(s)
Borrelia/clasificación , Quirópteros/microbiología , Fiebre Recurrente/epidemiología , Garrapatas/microbiología , Animales , Borrelia/genética , Borrelia/aislamiento & purificación , China/epidemiología , ADN Bacteriano/genética , Vectores de Enfermedades , Tipificación de Secuencias Multilocus , Filogenia , Reacción en Cadena de la Polimerasa
16.
Front Physiol ; 12: 587241, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33633582

RESUMEN

BACKGROUND: Hypoxia-induced decline in exercise capacity is ubiquitous among lowlanders who immigrated to high altitudes, which severely reduces their work efficiency and quality of life. Although studies have revealed that hypoxia-induced cardiovascular dysfunction limits exercise capacity at high altitudes, the mechanisms have not been well explored at the molecular level. miR-199a-5p is hypoxia-sensitive and serves as an important regulator in cardiovascular pathophysiology. However, whether miR-199a-5p is involved in cardiovascular dysfunction at high altitudes and contributes to subsequent reductions in exercise capacity remains unknown. Thus, this study aimed at exploring these relationships in a high altitude population. METHODS: A total of 175 lowlanders who had immigrated to an altitude of 3,800 m 2 years previously participated in the present study. The level of plasma miR-199a-5p and the concentration of serum myocardial enzymes were detected by qRT-PCR and ELISA, respectively. Indices of cardiovascular function were examined by echocardiography. The exercise capacity was evaluated by Cooper's 12-min run test and the Harvard Step Test. Furthermore, we explored the biological functions of miR-199a-5p with silico analysis and a biochemical test. RESULTS: The level of miR-199a-5p was significantly higher in individuals with poor exercise capacity at 3,800 m, compared with those with good exercise capacity (p < 0.001). miR-199a-5p accurately identified individuals with poor exercise capacity (AUC = 0.752, p < 0.001). The level of miR-199a-5p was positively correlated with cardiovascular dysfunction indices (all, p < 0.001). Furthermore, miR-199a-5p was involved in the oxidative stress process. CONCLUSION: In this study, we reported for the first time that the level of circulating miR-199a-5p was positively associated with exercise capacity during chronic hypoxia at high altitudes. Moreover, higher miR-199a-5p was involved in hypoxia-induced cardiovascular dysfunctions, thus contributing to poorer exercise endurance at high altitudes.

17.
Front Psychol ; 12: 796700, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-35069388

RESUMEN

Translation equivalents for cognates in different script systems share the same meaning and phonological similarity but are different orthographically. Event-related potentials were recorded during the visual recognition of cross-script cognates and non-cognates together with concreteness factors while Chinese learners of English performed a lexical decision task with the masked translation priming paradigm in Experiment 1 (forward translation: L1-L2) and Experiment 2 (backward translation: L2-L1). N400 effect was found to be closely related to priming effects of cross-script cognate status and concreteness in Experiment 1; and in Experiment 2, N150 and N400 effects were related to priming effects of cross-script cognate status and concreteness, and greater priming effects of cross-script cognate status in cognates than in non-cognates for abstract words were found in the time window of 100-200 ms. Meanwhile, the asymmetry of translation directions was observed in smaller priming effects in forward translation than in backward translation in the time window of 100-200 ms for abstract cognates, and in larger priming effects in forward translation than in backward translation in the time window of 350-550 ms for each type of words. We discussed the roles of phonological activation and concreteness effects in view of the function of N150 and N400 components as well as the relevant models, mainly the Distributed Feature Model and Bilingual Interactive Activation (BIA+) model.

18.
Ann Palliat Med ; 10(12): 12566-12574, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-35016451

RESUMEN

BACKGROUND: Sugammadex, a modified γ-cyclodextrin that selectively binds to muscle relaxants, is increasingly being used to reverse neuromuscular blockade after surgery, but the potential benefits for cancer patients in the real-world setting are obscure. METHODS: This was a real-world, retrospective study. Adult cancer patients (≥18 years) undergoing abdominal surgery at Jiangsu Cancer Hospital, a tertiary care cancer hospital in China, between 2 March 2018 and 25 November 2019, were included in the analysis. Patients received 2 mg/kg (maximally 200 mg) sugammadex based on the discretion of the attending anesthetists. Patients were extubated as soon as they were awake and able to follow commands. The endpoint measures included extubation time, bowel function recovery and length of hospital stay. RESULTS: A total of 1,615 patients were included in the analysis: 795 participants received sugammadex at a dosage of 2 mg/kg (maximum 200 mg) upon completion of surgery; the remaining 820 participants did not receive sugammadex or neostigmine (another antidote for neuromuscular blockade). Despite several biases that clearly favored patients not receiving sugammadex [younger, better American Society of Anesthesiologists (ASA) status, and fewer comorbidities], the extubation time was significantly shorter in patients receiving sugammadex [median: 14 (range, 0-121) vs. 30.5 (range, 0-183) min; P<0.001]. In multivariate linear regression analysis, sugammadex use was associated with a significantly shorter extubation time (P<0.05). Patients who received sugammadex also had accelerated bowel function recovery and shorter postoperative hospital stay. CONCLUSIONS: Sugammadex shortens extubation time and accelerates postoperative recovery in cancer patients undergoing abdominal surgery.


Asunto(s)
Neoplasias , Fármacos Neuromusculares no Despolarizantes , Adulto , Inhibidores de la Colinesterasa , Humanos , Neoplasias/tratamiento farmacológico , Neoplasias/cirugía , Fármacos Neuromusculares no Despolarizantes/uso terapéutico , Estudios Retrospectivos , Sugammadex/uso terapéutico
19.
Vector Borne Zoonotic Dis ; 21(1): 63-66, 2021 01.
Artículo en Inglés | MEDLINE | ID: mdl-33170090

RESUMEN

Microsporidia are a group of unicellular and opportunistic intestinal parasites in which Enterocytozoon bieneusi is a frequent species causing microsporidial infections in humans. Many domesticated and wild animals have been shown to be hosts of E. bieneusi and other microsporidia. The role of hedgehogs in the ecology of microsporidia is unclear; therefore, we investigated the prevalence and genetic diversity of E. bieneusi, Cryptosporidium, and Blastocystis spp. in hedgehogs (Erinaceus amurensis) collected from Hubei Province in Central China. PCR amplification of the internal transcribed spacer region of the ribosomal DNA indicated that 9.8% (4/41) hedgehogs were positive to E. bieneusi, but none (0/41) was positive to Cryptosporidium and Blastocystis spp. Phylogenetic analysis showed the strains detected from the hedgehogs belong to four novel genotypes (EA1-EA4), which were most closely related to type IV of group 1c. This study demonstrated that hedgehogs are hosts of E. bieneusi and may play a role in the transmission of E. bieneusi to humans in the process of being caught and slaughtered.


Asunto(s)
Enterocytozoon/aislamiento & purificación , Erizos/microbiología , Microsporidiosis/veterinaria , Animales , Blastocystis , China/epidemiología , Cryptosporidium , ADN Espaciador Ribosómico , Enterocytozoon/genética , Prevalencia , Análisis de Secuencia de ADN
20.
Vector Borne Zoonotic Dis ; 20(6): 427-431, 2020 06.
Artículo en Inglés | MEDLINE | ID: mdl-32155388

RESUMEN

Background:Leptospira is the causative agent of leptospirosis, a zoonotic disease of global importance. To have a better understanding on the host species of Leptospira, we investigated the prevalence of Leptospira species in hedgehogs in Central China. Materials and Methods: Hedgehogs were captured in Hubei Province, China in May and October, 2018. Total DNA was extracted from the kidney tissues of hedgehogs for determining the Leptospira species by PCR amplification of the rrs2, secY, and flaB genes with genus-specific primers. Results: PCR amplification indicated that the positive rate of hedgehogs to the rrs2, secY, and flaB genes were 19.5% (8/41), 12.2% (5/41), and 9.8% (4/41), respectively. The homology of the partial sequence of rrs2, secY, and flaB genes were 99.0-100% among the Leptospira strains from hedgehogs. Phylogenetic analysis revealed that Leptospira species detected in this study clustered together with Leptospira interrogans.Conclusions: We detected L. interrogans from hedgehogs in Central China, suggesting hedgehogs are the hosts of L. interrogans.


Asunto(s)
Erizos/microbiología , Leptospira interrogans/aislamiento & purificación , Leptospirosis/veterinaria , Animales , China/epidemiología , ADN Bacteriano/genética , Riñón/microbiología , Leptospira interrogans/genética , Leptospirosis/epidemiología , Leptospirosis/microbiología , Filogenia , Prevalencia
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