RESUMO
Semen is a measure of the reproductive efficiency of roosters, which affects the economic benefits of white-feathered broilers. Over the years, research in this field has mainly focused on hens, while there have been fewer studies on the reproductive traits of roosters. To identify the genes related to the semen traits of roosters, we used a chicken 55 K SNP chip to genetically type the white-feathered population (220) and performed imputation with resequencing data from 97 roosters. In total, 1 048 576 SNPs were obtained and used for genome-wide association analysis of semen volume, from which 197 genome-wide significant markers were identified, all within the interval of 13.82-16.12 Mb on chromosome 7. By combining our results with the biological functions of genes in the interval, four candidate genes were identified that potentially relate to semen volume: FAPP1, OSBPL6, SESTD1 and SSFA2. Our findings may provide a basis for further research on the genetic mechanism and marker-assisted selection of semen volume in white-feathered broilers.
Assuntos
Galinhas , Estudo de Associação Genômica Ampla , Animais , Masculino , Feminino , Estudo de Associação Genômica Ampla/veterinária , Galinhas/genética , Sêmen , Análise do Sêmen , Fenótipo , Polimorfismo de Nucleotídeo ÚnicoRESUMO
We herein report a case of Behçet's disease in a 27-year-old female who suffered from generalized skin rashes for one week. After hospitalization, massive bloody stools accompanying hypovolemic shock occurred. Emergency abdominal computed tomography-angiography failed to detect the bleeding source. Esophagogastroduodenoscopy also demonstrated no definite bleeding points. Ileocolonoscopy showed multiple large and deep ulcers with some blood coating and mild oozing in the terminal ileum. We initially performed epinephrine injection and hemoclips for her intestinal bleeding. However, massive bloody stools still continued. Thus, we prescribed a loading dose of 160 mg adalimumab followed by weekly 80 mg adalimumab subcutaneous injections to the patient. Following this treatment, her gastrointestinal bleeding gradually subsided and completely stopped within a few days. After three-week therapy with adalimumab, capsule endoscopy showed several healing ulcers without bleeding in the distal to the terminal ileum. She continues to be treated with adalimumab, azathioprine, and mesalazine without recurrent bleeding.
Assuntos
Síndrome de Behçet , Feminino , Humanos , Adulto , Adalimumab/uso terapêutico , Síndrome de Behçet/complicações , Síndrome de Behçet/tratamento farmacológico , Síndrome de Behçet/diagnóstico , Úlcera/complicações , Úlcera/tratamento farmacológico , Hemorragia Gastrointestinal/tratamento farmacológico , Hemorragia Gastrointestinal/etiologia , Íleo/diagnóstico por imagemRESUMO
Benign prostatic hyperplasia is one of the most common diseases in the elderly male population. The urinary tract symptoms may increase the risk of falls and fractures. The results indicated that patients with benign prostatic hyperplasia could increase the risk of vertebral compression fractures in both the thoracic and lumbar spine and also hip fractures, but did not increase the risk of wrist fracture. INTRODUCTION: The relationship between benign prostatic hyperplasia and the development of fall-related fractures, especially vertebral compression fractures, has been seldom mentioned in the literature. This study aimed to evaluate the risk of developing vertebral compression fracture, hip fracture, and wrist fracture in patients with benign prostatic hyperplasia. METHODS: This study obtained claims data retrospectively from the National Health Insurance Research Database of Taiwan and identified 48,114 patients who were diagnosed as having benign prostatic hyperplasia. Subjects of the control cohort were individually matched at a ratio of 4:1 with those in the benign prostatic hyperplasia cohort according to age and the index day. Comorbidities were classified as those existing before the index day and included a previous fracture history, osteoporosis, myocardial infarction, congestive heart failure, diabetes mellitus, hypertension, cerebrovascular accident, etc. The end of the follow-up period of the analyses was the day when the patient developed new vertebral compression fractures, hip fractures, or wrist fractures, terminated enrollment from the National Health Insurance, or died or until the end of 2012. The study used the Cox proportion hazard model to determine the hazard ratio for developing new hip fractures. RESULTS: Patients with benign prostatic hyperplasia were significantly more likely than those in the control cohort to develop new vertebral compression fractures in the thoracic spine (0.43% vs. 0.40%, adjusted hazard ratio 3.03, confidence interval 2.12-4.31) and lumbar spine (1.26% vs. 1.23%, adjusted hazard ratio 4.12, confidence interval 3.39-5.01), and hip fracture (1.47% vs. 2.09%, adjusted hazard ratio 1.22, confidence interval 1.10-1.36), but does not increase the risk of wrist fracture (0.61% vs. 0.67%, adjusted hazard ratio 1.07, confidence interval 0.85-1.34). CONCLUSIONS: Patients with benign prostatic hyperplasia exhibited an increased risk of developing vertebral compression fractures in both the thoracic and lumbar spine and also hip fractures, but did not increase the risk of wrist fracture. However, more research is needed to confirm this trend in the clinical setting.
Assuntos
Fraturas do Quadril/etiologia , Fraturas por Osteoporose/etiologia , Hiperplasia Prostática/complicações , Fraturas da Coluna Vertebral/etiologia , Traumatismos do Punho/etiologia , Acidentes por Quedas/estatística & dados numéricos , Adulto , Idoso , Comorbidade , Bases de Dados Factuais , Fraturas do Quadril/epidemiologia , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Fraturas por Osteoporose/epidemiologia , Hiperplasia Prostática/epidemiologia , Estudos Retrospectivos , Medição de Risco/métodos , Fraturas da Coluna Vertebral/epidemiologia , Taiwan/epidemiologia , Traumatismos do Punho/epidemiologiaAssuntos
Carcinoma Hepatocelular/cirurgia , Hipertensão Portal/diagnóstico por imagem , Neoplasias Hepáticas/cirurgia , Veia Porta/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Idoso , Carcinoma Hepatocelular/diagnóstico por imagem , Feminino , Previsões , Humanos , Neoplasias Hepáticas/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , PrognósticoRESUMO
BACKGROUND: Periprosthetic joint infection (PJI) is a significant post-arthroplasty complication for diabetic patients, with uncontrolled diabetes identified as a PJI risk factor. Taiwan's Diabetes Shared Care Program (DSCP) was established for holistic diabetes care. AIM: To evaluate the DSCP's impact on PJI incidence and patients' medical costs. METHODS: Data were analysed from Taiwan's National Health Insurance Research Database from 2010 to 2020, focusing on type 2 diabetes mellitus (DM) patients who had undergone arthroplasty. The study group involved DSCP participants, while a comparison group comprised non-participants with matched propensity scores for age, sex, and comorbidities. The primary outcome was the PJI incidence difference between the groups; the secondary outcome was the medical expense difference. FINDINGS: The study group consisted of 11,908 type 2 DM patients who had arthroplasty and joined the DSCP; PJI occurred in 128 patients. Among non-participants, 184 patients had PJI. The PJI incidence difference between the groups was statistically significant (1.07% vs 1.55%). The study group's medical costs were notably lower, regardless of PJI incidence. Multivariate regression showed higher PJI risk in patients in comparison group, aged >70 years, male, or who had obesity, anaemia. CONCLUSION: The study indicates that DSCP involvement reduces PJI risks and decreases annual medical costs for diabetic patients after arthroplasty. Consequently, the DSCP is a recommendable option for such patients who are preparing for total joint arthroplasty.
Assuntos
Artroplastia de Quadril , Diabetes Mellitus Tipo 2 , Infecções Relacionadas à Prótese , Humanos , Masculino , Diabetes Mellitus Tipo 2/complicações , Fatores de Risco , Infecções Relacionadas à Prótese/complicações , Taiwan/epidemiologia , Artroplastia de Quadril/efeitos adversos , Estudos RetrospectivosRESUMO
Asthma is a chronic inflammatory airway disease accounting for severe morbidity and mortality in children. To determine the characteristics of traditional Chinese medicine (TCM) used to treat pediatric asthma, we conducted a nationwide population-based study by analyzing a cohort of one million randomly sampled patients from the beneficiaries of the National Health Insurance Program in Taiwan from 2002 to 2010. Children under 18 years of age with newly diagnosed asthma (ICD-9-CM code: 493, N = 45 833) were enrolled, and 57.95% (N = 26 585) of them had used TCM. The number of TCM users was significantly more than that of non-TCM users in school-age children. The most commonly prescribed TCM formula is Ding-chuan-tang, or Xing-ren (Semen Armeniacae Amarum) for the single herb. Our study is the first to reveal characteristics and prescription patterns of the use of TCM in children with asthma. Further research is needed to elucidate the efficacy and safety of these Chinese herbal products.
Assuntos
Asma/tratamento farmacológico , Medicamentos de Ervas Chinesas/uso terapêutico , Medicina Tradicional Chinesa , Adolescente , Asma/epidemiologia , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Programas Nacionais de Saúde , Avaliação de Resultados em Cuidados de Saúde , TaiwanRESUMO
An imbalance between T Helper 1 (T(H)1) and T Helper 2 (T(H)2) cytokine production is important for the pathogenesis of systemic lupus erythematosus (SLE). We aimed to investigate gene-gene associations of T(H)1 and T( H)2 cytokines genes in Chinese patients with SLE. Twenty single nucleotide polymorphisms (SNPs) in eight cytokines genes were genotyped in 110 SLE patients and 138 healthy controls in a case-control association study. The minor allelic frequencies of interleukin4(IL4) -590 T/C, -33 T/C, 9241C/G, and IL10 -592 A/C were significantly increased in SLE patients compared with those in controls (p < 0.05). None of the separate 20 SNPs showed significant association with SLE after Bonferroni correction. An IL4 haplotype -590C/-33C/9241G/14965C was significantly associated with SLE (odds ratio 3.7, 95% confidence interval [CI] 1.5-8.9, p = 0.004, Bonferroni-corrected p = 0.024). A borderline significant three-locus gene-gene interaction among IL4 9241 C/G, IL4 -33 T/C, signal transducer and activator of transcription 6, IL4-induced (STAT6) 2892 C/T was detected by a multifactor dimensionality reduction test (p = 0.051). However, the presence of two at-risk genotypes lead to increased risk of SLE for two-locus interaction using logistic regression method. The risk of SLE increased significantly when a subject has two at-risk genotypes for IL4 -590C and STAT6 2892C (odds ratio, 3.24, 95% CI 1.5-7.0, p = 0.003, Bonferroni-corrected p = 0.009), IL4 -33C and STAT6 2892C (odds ratio 3.06, 95% CI 1.4- 6.7, p = 0.005, Bonferroni-corrected p = 0.015), as well as IL4 9241G and STAT6 2892C (odds ratio 3.34, 95% CI 1.6-7.1, p = 0.002, Bonferroni-corrected p = 0.006). Further, plasma IL-4 concentrations were significantly lower in SLE patients than in healthy controls (1.59 + 3.53 versus 5.67 + 11.28 pg/ml, p = 0.042). These results indicated that IL4 and STAT6 genes might be involved in the etiology of SLE and potentially increased SLE risk through their interaction effect in Chinese patients.
Assuntos
Predisposição Genética para Doença , Interleucina-4/genética , Lúpus Eritematoso Sistêmico/genética , Fator de Transcrição STAT6/genética , Alelos , Povo Asiático/genética , China , Feminino , Frequência do Gene , Genótipo , Humanos , Interleucina-4/sangue , Modelos Logísticos , Masculino , Polimorfismo de Nucleotídeo Único , RiscoRESUMO
BACKGROUND: Sex hormone decline remarkably decreases metabolic function in elderly men. Many degenerative diseases may relate to testosterone deficiency. OBJECTIVE: To evaluate the serum testosterone concentration in elderly men, its related metabolic and inflammatory factors, and the relationship of metabolic syndrome to testosterone levels. METHODS: 381 elderly men (78.8+/-4.1 yr old) residing in a veterans' nursing home were enrolled. We measured body height and weight, waist and hip circumferences, body fat, blood pressure, blood glucose and insulin, glycosylated hemoglobin (HbA1c), lipid profile, complete blood count, high sensitivity C-reactive protein (hsCRP), total testosterone, and SHBG. Free testosterone was calculated by Nanjee-Wheeler's method. RESULTS: Serum total testosterone levels were 0.20-15.74 ng/ml (free testosterone 11.78-478.31 pmol/l). Total testosterone correlated negatively with body mass index (BMI), waist-hip ratio, body fat, blood glucose, blood insulin, HbA1c, serum triglyceride, white blood cell (WBC) count and hsCRP; but positively with HDL-cholesterol (HDL-C) and hemoglobin. Multiple regression stepwise forward analysis revealed that BMI values, fasting blood glucose, WBC count, fasting hsCRP and hemoglobin were independent factors related to total testosterone. Furthermore, total testosterone is lower in elderly men with metabolic syndrome, according to National Cholesterol Education Program criteria with a modification of waist circumference. However, free testosterone plays a small role in association with metabolic factors in this elderly men's population. CONCLUSION: Total testosterone level is significantly related to metabolic and inflammatory factors in elderly men. Low total testosterone may be a significant indicator for development of metabolic syndrome in elderly men.
Assuntos
Envelhecimento/fisiologia , Metabolismo Energético , Testosterona/sangue , Idoso , Idoso de 80 Anos ou mais , Índice de Massa Corporal , Estudos Transversais , Humanos , Inflamação/metabolismo , Masculino , Análise de RegressãoRESUMO
We investigated the prevalence of Asian fish tapeworm Bothriocephalus infection in grass carp in Dongting Lake of Hunan province, subtropical China between August 2014 and October of 2015. A total of 2534 fish samples from four representative administrative regions in Hunan province, subtropical China were examined for the presence of Bothriocephalus using helminthological approach. The overall prevalence of Bothriocephalus in grass carp was 6.6% (167/2534). The prevalence of Bothriocephalus in grass carp was higher in summer (10.0%) and spring (7.0%) than in autumn (6.0%) and winter (3.3%) (P<0.01). The highest prevalence of Bothriocephalus was found in grass carp with body weight 0.5
RESUMO
To assess antiarrhythmic efficacy of oral nadolol, 15 patients with recurrent supraventricular tachycardia were studied. Eight patients had atrioventricular (AV) nodal reentrant tachycardia and seven had AV reciprocating tachycardia involving an accessory AV pathway. Electrophysiologic studies were performed before and after intravenous infusion of propranolol (0.20 mg/kg), and were repeated 5 to 8 days after oral nadolol therapy at a daily dose of 80 to 160 mg. Both intravenous propranolol and oral nadolol induced significant prolongation of the sinus cycle length from 741 +/- 73 ms to 834 +/- 97 and 1,029 +/- 95 ms, respectively (p less than 0.001 and p less than 0.0001, respectively). Both intravenous propranolol and oral nadolol depressed AV nodal but not accessory AV pathway conduction, and shifted the dual AV nodal pathway conduction curves (A1A2, A2H2; A1A2, H1H2) upward and to the right by prolonging the conduction time and increasing the refractory period. Ten patients (seven with AV nodal reentry and three with AV reciprocation) who responded to intravenous propranolol also responded to oral nadolol with loss of the inducibility of sustained tachycardia; the remaining five patients (one with AV nodal reentry and four with AV reciprocation) who did not respond to intravenous propranolol also failed to respond to oral nadolol with persistence of the inducibility of sustained tachycardia. Thus, in conclusion, intravenous propranolol testing predicts the therapeutic efficacy of oral nadolol therapy and oral nadolol in once-daily doses may be used for long-term prophylaxis of recurrent supraventricular tachycardia.
Assuntos
Antagonistas Adrenérgicos beta/uso terapêutico , Antiarrítmicos/uso terapêutico , Propanolaminas/uso terapêutico , Taquicardia Paroxística/tratamento farmacológico , Adolescente , Adulto , Idoso , Nó Atrioventricular/efeitos dos fármacos , Cateterismo Cardíaco , Avaliação de Medicamentos , Eletrocardiografia/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Nadolol , Propranolol/uso terapêutico , Recidiva , Taquicardia Paroxística/fisiopatologiaRESUMO
We present two cases of incontinentia pigmenti in a father and his daughter and discuss possible modes of inheritance. The mode of inheritance in our patients is known.
Assuntos
Transtornos da Pigmentação/genética , Adulto , Feminino , Genes Dominantes , Humanos , Lactente , Masculino , Cromossomo XRESUMO
To find out whether close axonal injury resulted in greater free radical risk to cord-projection central neurons than distant ones, we studied the expressions of nitric oxide synthase, calcineurin, and superoxide dismutase in rat rubrospinal neurons following brainstem, C2 and T10 axotomies using immunohistochemical methods. We found that nitric oxide synthase expression was upregulated more following brainstem than C2 lesion while T10 lesion triggered no detectable changes. This response peaked at 1 week and returned to control level by 8-week-post-injury. At the same time, calcineurin, which activated nitric oxide synthase, was increased 1 week following brainstem and C2 axotomies. These suggest that close, but not distant, axotomy enhanced NO production, which appeared to be cytotoxic since blocking NO synthesis with N-nitro- l-arginine methyl ester reduced brainstem axotomy-induced rubrospinal cell loss. On the other hand, the mitochondrial Mn-superoxide dismutase, which competes with NO to prevent the formation of the cytotoxic free radical peroxynitrite, was notably reduced after brainstem but almost unaltered following C2 axotomy. Meanwhile, the cytosolic Cu/Zn-superoxide dismutase was not altered following C2 but increased after brainstem axotomy. Ultrastructurally, in rubrospinal neurons more mitochondria became swollen following brainstem than C2 axotomy. Based on these, we proposed that besides the NO-overproduction-induced toxicity, superoxide-loading-induced mitochondrial damage also added to hampering the survival of the closely axotomized neurons.
Assuntos
Axônios/fisiologia , Radicais Livres/metabolismo , Neurônios/metabolismo , Núcleo Rubro/metabolismo , Traumatismos da Medula Espinal/metabolismo , Medula Espinal/metabolismo , Animais , Axônios/patologia , Axotomia/métodos , Calcineurina/metabolismo , Inibidores Enzimáticos/farmacologia , Feminino , Técnicas Imunoenzimáticas , NG-Nitroarginina Metil Éster/farmacologia , Neurônios/ultraestrutura , Óxido Nítrico/antagonistas & inibidores , Óxido Nítrico/biossíntese , Óxido Nítrico Sintase/antagonistas & inibidores , Óxido Nítrico Sintase/metabolismo , Óxido Nítrico Sintase Tipo I , Ratos , Ratos Wistar , Núcleo Rubro/efeitos dos fármacos , Núcleo Rubro/patologia , Medula Espinal/efeitos dos fármacos , Medula Espinal/patologia , Traumatismos da Medula Espinal/patologia , Superóxido Dismutase/metabolismo , Fatores de Tempo , Regulação para CimaRESUMO
Antigenicity of Schistosoma mansoni and S. japonicum eggs preserved in ethanol or acetone were assessed in a circumoval precipitin (COP) assay. The egg antigens were found to retain sufficiently their COP reactivity for the diagnosis of both schistosomiasis mansoni and japonica, although their reactivity became lower than that of lyophilized eggs. These alternative preparations for COP tests have advantages, such as keeping eggs directly in fixatives soon after the egg-purification process. Furthermore, evaporation-process may cause eggshell cleavages which facilitate the reaction. The possible usefulness of those eggs in COP assays in local endemic areas is discussed.
Assuntos
Acetona/normas , Antígenos de Helmintos/imunologia , Etanol/normas , Testes de Precipitina/métodos , Preservação Biológica/métodos , Esquistossomose Japônica/imunologia , Esquistossomose mansoni/imunologia , Estudos de Avaliação como Assunto , Liofilização/normas , Humanos , Testes de Precipitina/normas , Preservação Biológica/normas , Esquistossomose Japônica/parasitologia , Esquistossomose mansoni/parasitologiaRESUMO
The effect of putrescine on oleic acid-induced RDS were studied in rat, it was found that preadministration of putrescine to rat with RDS significantly improved its hypoxemia, pulmonary edema and histologic injury; inhibited the leakage of protein from plasma; lowered increase of pulmonary lipid peroxidation products (malondialdehde, MDA). The result suggests that putrescine could have significant potential for clinical treatment of acute pulmonary injury.
Assuntos
Putrescina/uso terapêutico , Síndrome do Desconforto Respiratório/prevenção & controle , Animais , Pulmão/metabolismo , Pulmão/patologia , Masculino , Malondialdeído/metabolismo , Ácido Oleico , Ácidos Oleicos , Tamanho do Órgão/efeitos dos fármacos , Ratos , Ratos Wistar , Síndrome do Desconforto Respiratório/induzido quimicamenteRESUMO
Campylobacter jejuni of different subtypes were identified in chicken, dairy cattle and diarrhoea patients in China from 2005 to 2006, using multiplex PCR and RFLP. The results indicated that, of the three types of samples, C. jejuni was most frequently detected in poultry of the three types of samples, with an average isolation rate of up to 18.61% and a flock contamination rate of 86.67%. The average incidence of C. jejuni in overall cattle and environmental samples, milk cows, heifers and diarrhoea patients was 7.77, 5.02, 8.70 and 4.84%, respectively. A higher prevalence was detected in outpatients than ward patients (P<0.01), and in patients aged <7 years than in older patients (P<0.01). The 265 isolates of C. jejuni were classified into 20 distinct types by PCR-RFLP analysis of the flaA gene, with the genotype distribution in humans overlapping that in poultry and cattle. This suggests that certain C. jejuni strains circulate between humans and domestic animals such as cattle and poultry.
Assuntos
Infecções por Campylobacter/veterinária , Campylobacter jejuni/isolamento & purificação , Doenças dos Bovinos/epidemiologia , Diarreia/epidemiologia , Doenças das Aves Domésticas/epidemiologia , Animais , Infecções por Campylobacter/epidemiologia , Campylobacter jejuni/genética , Bovinos , Galinhas , Criança , China/epidemiologia , Indústria de Laticínios , Diarreia/microbiologia , Genótipo , Humanos , Vigilância da População , PrevalênciaRESUMO
The nutritional requirements for acetoin production by Bacillus subtilis CICC 10025 were optimized statistically in shake flask experiments using indigenous agroindustrial by-products. The medium components considered for initial screening in a Plackett-Burman design comprised a-molasses (molasses submitted to acidification pretreatment), soybean meal hydrolysate (SMH), KH(2)PO(4).3H(2)O, sodium acetate, MgSO(4).7H(2)O, FeCl(2), and MnCl(2), in which the first two were identified as significantly (at the 99% significant level) influencing acetoin production. Response surface methodology was applied to determine the mutual interactions between these two components and optimal levels for acetoin production. In flask fermentations, 37.9 g l(-1) acetoin was repeatedly achieved using the optimized concentrations of a-molasses and SMH [22.0% (v/v) and 27.8% (v/v), respectively]. a-Molasses and SMH were demonstrated to be more productive than pure sucrose and yeast extract plus peptone, respectively, in acetoin fermentation. In a 5-l fermenter, 35.4 g l(-1) of acetoin could be obtained after 56.4 h of cultivation. To our knowledge, these results, i.e., acetoin yields in flask or fermenter fermentations, were new records on acetoin fermentation by B. subtilis.
Assuntos
Acetoína/metabolismo , Bacillus subtilis/crescimento & desenvolvimento , Biotecnologia/métodos , Meios de Cultura/química , Glycine max/metabolismo , Melaço , Hidrolisados de Proteína/metabolismo , Bacillus subtilis/metabolismo , Fermentação , Modelos Biológicos , Projetos de PesquisaRESUMO
Several interpretations have been made regarding the specificity of antiphospholipid antibodies and antibodies against oxidized low-density lipoprotein (oxLDL), but these are still controversial. In the present study, we delineated specificity of these two types of antibodies and analyzed their regulatory effect on oxLDL and/or beta( 2)-glycoprotein I (beta(2)GPI) binding to macrophages. Scavenger receptor-mediated binding of oxLDL (or its beta(2)GPI complexes) to macrophages was observed and the binding was partly prevented by beta( 2)GPI. The IgG monoclonal anti-beta(2)GPI antibody (WB-CAL-1), which was derived from NZW x BXSB F1 mouse (a model of antiphospholipid syndrome), significantly increased the oxLDL/beta(2)GPI binding to macrophages. In contrast, IgM anti-oxLDL natural antibody, EO6 (derived from apoe( -/-) mouse), prevented the binding. Different antigenic specificity of these antibodies to oxLDL and its beta(2)GPI complexes was also confirmed in TLC-ligand blot and ELISA. Thus, IgG anti-beta(2) GPI autoantibodies contribute to lipid metabolism (housekeeping of oxLDL by macrophages) whereas IgM natural anti-oxLDL antibodies may protect against atherogenesis. In addition, in vitro data suggest that relatively high dose of intravenous immunoglobulin preparations (mainly contain IgG anti-oxLDL antibodies) might also prevent atherogenesis by inhibiting the oxLDL binding to macrophages.
Assuntos
Anticorpos Antifosfolipídeos/fisiologia , Síndrome Antifosfolipídica/imunologia , Aterosclerose/imunologia , Lipoproteínas LDL/imunologia , Macrófagos/fisiologia , beta 2-Glicoproteína I/fisiologia , Animais , Especificidade de Anticorpos , Linhagem Celular , Humanos , Imunoglobulina G/imunologia , Imunoglobulina G/fisiologia , Imunoglobulina M/imunologia , Imunoglobulina M/fisiologia , Imunoglobulinas Intravenosas/imunologia , Lipoproteínas LDL/metabolismo , Macrófagos/imunologia , CamundongosRESUMO
The purpose of this study was to provide more information about the morphological characteristics of the craniofacial complex in mandibular prognathism. Forty young adult males having mandibular prognathism were compared with 40 having normal occlusion. This was conducted to carry out geometric morphometric assessments to localize alterations, using Procrustes analysis and thin-plate spline analysis, in addition to conventional cephalometric techniques. Procrustes analysis indicated that the mean craniofacial, midfacial and mandibular morphology was significantly different in prognathic subjects compared with normal controls. This finding was corroborated by the multivariate Hotelling T(2)-test of cephalometric variables. Mandibular prognathism demonstrated a shorter and slightly retropositioned maxilla, a greater total length and anterior positioning of the mandible. Thin-plate spline analysis revealed a developmental diminution of the palatomaxillary region anteroposteriorly and a developmental elongation of the mandible anteroposteriorly, leading to the appearance of a prognathic mandibular profile. In conclusion, thin-plate spline analysis seems to provide a valuable supplement for conventional cephalometric analysis because the complex patterns of craniofacial shape change are visualized suggestive by means of grid deformations.
Assuntos
Mandíbula/patologia , Maxila/patologia , Prognatismo/patologia , Adulto , Cefalometria/métodos , Humanos , Masculino , Má Oclusão Classe III de Angle/patologia , Palato/patologia , Crânio/patologia , Alvéolo Dental/patologiaRESUMO
2,3,5,6-Tetramethylpyrazine (TTMP) was produced using a newly isolated Bacillus mutant. Culture medium optimization studies showed that soytone, an enzyme-hydrolysate of soybean meal, with the supplementation of vitamins, can fully replace yeast extract plus peptone in supporting TTMP production from glucose. In a 5-l fermenter, using the optimized medium which contained 20% glucose, 5% soytone, 3% (NH(4))(2)HPO(4), and vitamin supplements, fermentations were carried out with stirring at 700 rpm, air flow at 1.0 vvm, controlled pH at 7.0, and temperature at 37 degrees C. TTMP reached 4.33 g l(-1) after 64.6 h cultivation. A product recovery method was described, which involved evaporation, crystallization, and lyophilization. The product purity was 99.88%, determined by GC with the normalization method. The main impurities were 2,3,5-trimethylpyrazine (0.09%) and 2-ethyl-3,5,6-trimethylpyrazine (0.02%), which were identified by GC/MS. (13)C NMR determination also gave a consistent result. Natural and high purity of the product and the utilization of cheap green renewable materials make this process promising to compete with TTMP chemical synthetic methods.