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Arredondo J, Aguirre-Medina JF, Meza-Hernández JS, Cancino J, Díaz-Fleischer F. Accelerating sexual maturation of male Anastrepha ludens (Diptera: Tephritidae) fruit flies by adding two juvenile hormone analogues. Pest Manag Sci 2024; 80:1367-1371. [PMID: 37961838 DOI: 10.1002/ps.7867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 09/28/2023] [Accepted: 11/14/2023] [Indexed: 11/15/2023]
Abstract
BACKGROUND Improving the mating competitiveness and survival of sterile males are direct means to increase the effectiveness of the sterile insect technique (SIT). Some insecticide growth regulators, such as the juvenile hormone analogue (JHA) methoprene, have been used to improve the mating competitiveness of male tephritid flies by reducing their sexual maturation period. However, the application of methoprene reduces fly resistance to stress and decreases survival. Here, we compared the effects of methoprene and pyriproxyfen (PPF), another JHA, in Anastrepha ludens males. PPF is an insect growth regulator that exhibits higher negative effects on the larval molting process than methoprene or natural juvenile hormone. Both compounds were administered at two doses (0.05% and 0.10%) via the male diet immediately after emergence. RESULTS Our results show that both PPF and methoprene reduced male sexual maturation. However, PPF-treated males exhibited a shorter maturation period and obtained more matings at a given age than methoprene-treated males. No significant differences were observed between the two PPF doses tested (0.05% and 0.10%). Male survival was equally reduced by the two compounds. CONCLUSION Our results demonstrate that PPF accelerated sexual development without reducing the mating propensity of sterile male flies and can be used as a suitable alternative for methoprene. © 2023 Society of Chemical Industry.
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Affiliation(s)
- José Arredondo
- Facultad de Ciencias Agronómicas Campus V, Universidad Autónoma de Chiapas, Villaflores, Mexico
| | - Juan F Aguirre-Medina
- Facultad de Ciencias Agrícolas Campus IV, Universidad Autónoma de Chiapas, Entronque carretera costera y Huehuetan Pueblo, Huehuetán, Mexico
| | | | - Jorge Cancino
- Programa Moscafrut, SADER-SENASICA, Metapa de Domínguez, Mexico
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2
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Blanco N, Oliva I, Tejedor P, Pastor E, Alvarellos A, Pastor C, Baixauli J, Arredondo J. ILEOSTIM trial: a study protocol to evaluate the effectiveness of efferent loop stimulation before ileostomy reversal. Tech Coloproctol 2023; 27:1251-1256. [PMID: 37106220 PMCID: PMC10638139 DOI: 10.1007/s10151-023-02807-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023]
Abstract
PURPOSE A protective loop ileostomy is the most useful method to reduce sequelae in the event of an anastomotic leakage (AL) after rectal cancer surgery. However, it requires an additional stoma reversal surgery with its own potential complications. Postoperative ileus (POI) remains the most common complication after ileostomy reversal, which leads to an increase in morbidity, length of hospital stay (LOS) and overall healthcare costs. Several retrospective studies carried out in this field have concluded that there are insufficient evidence-based recommendations about the routine application of preoperative bowel stimulation in clinical practice. Here we discuss whether stimulation of the efferent limb before ileostomy reversal might reduce POI and improve postoperative outcomes. METHODS This is a multicentre randomised controlled trial to determine whether mechanical stimulation of the efferent limb during the 2 weeks before the ileostomy reversal would help to reduce the development of POI after surgery. This study was registered on Clinicaltrials.gov (NCT05302557). Stimulation will consist of infusing a solution of 500 ml of saline chloride solution mixed with a thickening agent (Resource©, Nestlé Health Science; 6.4 g sachet) into the distal limb of the ileostomy loop. This will be performed within the 2 weeks before ileostomy reversal, in an outpatient clinic under the supervision of a trained stoma nurse. CONCLUSION The results of this study could provide some insights into the preoperative management of these patients.
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Affiliation(s)
- N Blanco
- Department of General Surgery, Clínica Universidad de Navarra, Av. Pío XII 36, 31008, Pamplona, Navarra, Spain
| | - I Oliva
- Department of General Surgery, University Hospital of León, León, Spain
| | - P Tejedor
- Department of General Surgery, University Hospital Gregorio Marañón, Madrid, Spain
| | - E Pastor
- Department of General Surgery, University Hospital of León, León, Spain
| | - A Alvarellos
- Department of General Surgery, Clínica Universidad de Navarra, Madrid, Spain
| | - C Pastor
- Department of General Surgery, Clínica Universidad de Navarra, Madrid, Spain
| | - J Baixauli
- Department of General Surgery, Clínica Universidad de Navarra, Av. Pío XII 36, 31008, Pamplona, Navarra, Spain
| | - J Arredondo
- Department of General Surgery, Clínica Universidad de Navarra, Av. Pío XII 36, 31008, Pamplona, Navarra, Spain.
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3
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Aceves-Aparicio E, Pérez-Staples D, Arredondo J, Corona-Morales A, Morales-Mávil J, Díaz-Fleischer F. Combined Effects of Methoprene and Metformin on Reproduction, Longevity, and Stress Resistance in Anastrepha ludens (Diptera: Tephritidae): Implications for the Sterile Insect Technique. J Econ Entomol 2021; 114:142-151. [PMID: 33558906 DOI: 10.1093/jee/toaa295] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Indexed: 06/12/2023]
Abstract
Survival and mating success are traits of quality in mass-reared sterile males. Thus, studying the trade-offs between these traits may help to improve process in the sterile insect technique (SIT). Here, we tested the hypothesis that modifying individual metabolism, especially of energetic reserves, may reduce the negative impact of an early reproduction on the survival of Anastrepha ludens flies. Appling metformin (a drug used to treat type II diabetes) that improves insects' survival, through dietary restriction mimicry, and methoprene (a juvenile hormone analogue) that accelerates the age to reproduction in insects, we explore the dynamic of this trade-off. We fed A. ludens flies with metformin, methoprene, or a mixture of metformin-methoprene for five consecutive days. We determined the effect of these treatments on the fecundity and fertility (number of eggs and percentage of hatching) of females, on sexual maturation and mating success of males, and on the survival of both sexes. The results showed that the acceleration in sexual maturation by the action of methoprene significantly reduced survival in both sexes of two different fly strains. However, adding metformin to the diet buffered this negative effect, without reducing the mating propensity compared with the males treated only with methoprene. The response to metformin was sex-specific since females responded to high doses of the substance, whereas males responded better to low doses. These results suggest that trade-offs between survival and reproduction do not necessarily depend on energy reserves but they are intrinsically related to metabolic regulation and hormonal control.
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Affiliation(s)
| | | | - José Arredondo
- MOSCAFRUT, Subdirección de Desarrollo de Métodos, SADER-IICA, Metapa de Domínguez, Chiapas, México
| | - Aleph Corona-Morales
- Facultad de Nutrición, Universidad Veracruzana, Médicos, U. H del Bosque, CP, Xalapa, Veracruz, México
| | - Jorge Morales-Mávil
- Instituto de Neuroetología, Universidad Veracruzana, Av. Dr. Luis Castelazo, Industrial de las ánimas, CP, Xalapa, Veracruz, México
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4
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Arredondo J, Aguirre-Medina JF, Meza JS, Cancino J, Díaz-Fleischer F. Does the Effect of Irradiation Dose Vary Between Flies Selected and Non-selected to Resist Desiccation? The Case of Anastrepha ludens (Diptera: Tephritidae). J Econ Entomol 2020; 113:2679-2687. [PMID: 32964241 DOI: 10.1093/jee/toaa201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Indexed: 06/11/2023]
Abstract
The sterile insect technique (SIT), used to control different species of tephritid fruit flies (Diptera: Tephritidae), is an important element in sustainable agriculture because of its low negative impact on the environment. In SIT, flies are mass produced and sterilized in the laboratory and then released in a target area. However, once released, laboratory flies may confront harass environments that would reduce their performance and consequently SIT efficiency. Selecting flies that resist stressful conditions may help to improve the efficiency of the SIT by releasing males that resist desiccation, for example, ensuring, thus, their survival in environments with low relative humidity. However, the selection process may affect the resistance of flies to the stress of sterilization, since some life history traits are affected. Here, we studied the effect of irradiation on Anastrepha ludens (Loew) (Diptera: Tephritidae) desiccation resistant flies (DR) compared with nonselected flies (NS). We measured the effect of gamma irradiation dose (0, 20, 40, 60, and 80 Gy) on sterility (males and females) and quality parameters (emergence, flight ability, survival, and male sexual performance) in A. ludens adults of the DR and NS (control) strains. Our results indicate that irradiation affected equally the sterility of adults of both strains. None of the quality parameters differed between strains. The only difference was that DR flies survived longer than control flies. Thus, flies that are resistant to desiccation can be used in the SIT without altering the current process of irradiation and packing.
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Affiliation(s)
- José Arredondo
- Facultad de Ciencias Agronómicas Campus V, Universidad Autónoma de Chiapas, Carretera Ocozocoautla-Villaflores Km 84.5, Villaflores, Chiapas, Mexico
| | - Juan F Aguirre-Medina
- Facultad de Ciencias Agrícolas Campus IV, Universidad Autónoma de Chiapas, Entronque carretera costera y Huehuetan Pueblo, Huehuetán, Chiapas, Mexico
| | - José S Meza
- Programa Moscafrut, SADER-SENASICA, Camino a los Cacaotales S/N, Metapa de Domínguez, Chiapas, Mexico
| | - Jorge Cancino
- Programa Moscafrut, SADER-SENASICA, Camino a los Cacaotales S/N, Metapa de Domínguez, Chiapas, Mexico
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5
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Abstract
For insect pests controlled through the Sterile Insect Technique (SIT), which consists in the mass production, sterilization, and release of target insects into affected areas, sterile male mating success with wild females is the key that will reduce population levels in the next generation. Male size is assumed to be important for mating success, but often without any concrete evidence or confounded by other parameters. Here, we evaluated male size and its interaction with male origin (laboratory or wild) on female choice for two lekking species controlled through SIT, Anastrepha obliqua (Macquart) and Anastrepha ludens (Loew) (Diptera: Tephritidae). In field cages, we tested wild females mating with: large wild males competing against small wild males; large wild males against small laboratory-sterile males; and large laboratory-sterile males against small wild males. We found evidence of large male advantage for A. obliqua but no effect of male size on mating competitiveness for A. ludens. For A. obliqua large wild males had a greater mating success over small laboratory males, yet large laboratory males secured a similar amount of copulations than small wild males. For A. ludens, there was no effect of male size on mating success. We discuss why A. obliqua is sensitive to size and origin while no effect was seen in A. ludens. SIT programs should not assume that male mating success is dependent on a large size. Alternatively, when an advantage exists for large males, mass-rearing programs should stride to produce and release large males.
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Affiliation(s)
- Marco Tulio Tejeda
- Subdirección de Filtrado Genético, Programa Operativo Moscamed Acuerdo Sader-IICA. Planta Moscamed, Chiapas, México
| | - José Arredondo
- Departamento de Biología, Ecología y Comportamiento, Desarrollo de métodos, Programa Moscafrut (SADER-SENASICA), Camino a los Cacaotales S/N, Chiapas, México
| | | | - Diana Pérez-Staples
- INBIOTECA, Universidad Veracruzana. Veracruz, México
- Corresponding author, e-mail:
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Reitzel NE, Sherlock M, Zachos M, Arredondo J, Ratcliffe E. A173 RECOGNIZING RARE PRESENTATIONS OF POLYPOSIS SYNDROMES AND THEIR ASSOCIATED MALIGNANCIES IN PEDIATRIC PATIENTS. J Can Assoc Gastroenterol 2020. [DOI: 10.1093/jcag/gwz047.172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
There is a range of polyposis syndromes and presentations in pediatrics. There are also associated extra-colonic malignancies of which to be cognizant when orchestrating the initial work-up of the various polyposis syndromes.
Aims
To use case review to highlight the importance of recognizing the breadth of presentations of polyposis syndromes in pediatrics.
Methods
Two recent pediatric presentations of polyposis with extra-intestinal manifestations were identified, chart review completed, and compared with newly published ESPGHAN guidelines.
Results
Two patients with intestinal polyposis are presented, in which extra-colonic malignancies and genetic mutations were identified.
The first patient presented at age 16 with a history of fatigue and abdominal pain, and was found to have pancytopenia and splenomegaly. Initial work up included a bone marrow biopsy that was normal. The patient then underwent upper and lower endoscopic evaluation for increasing abdominal pain and persistent anemia and was found to have polymorphic polyps in the duodenum, sigmoid and rectum. On pathology, polyps were mostly inflammatory, but one was found to be hamartomatous. Additional screening revealed a thyroid nodule, found to be follicular carcinoma, requiring hemithyroidectomy. The patient was confirmed to have a PTEN mutation and was diagnosed with Cowden syndrome; following this diagnosis proceeded with a prophylactic bilateral mastectomy.
The second patient was referred at age 15 with a strong family history of APC-associated FAP. At the time of consultation she was asymptomatic and she remained so throughout her work-up. Screening endoscopy revealed 70–90 recto-sigmoid adenomatous polyps as well as scattered gastric and duodenal polyps. Her initial work-up also uncovered an early papillary thyroid carcinoma. Her treatment included a total thyroidectomy and total proctocolectomy with J-pouch and ileoanal anastomosis. Follow-up endoscopy continues for surveillance of numerous gastric adenomas which to this point have not progressed to high-grade dysplasia or malignancy.
Conclusions
These 2 cases highlight the importance of recognizing that neoplastic conditions typically diagnosed in adulthood can also present in the pediatric age group. Ideally, further guidelines in pediatrics would be beneficial to ensure a consistent approach to investigating polyposis and associated malignancies. Pertaining to our specific patients, each had identification of a thyroid malignancy before the recommended screening age of 18 as per the currently accepted guideline, and neither were symptomatic. More cases are needed to establish if this earlier recognition of disease is meaningful in postulating potential mortality associated with a later diagnosis.
Funding Agencies
None
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Affiliation(s)
- N E Reitzel
- Division of Gastroenterology, Hepatology & Nutrition, McMaster Children’s Hospital, Hamilton, ON, Canada
| | - M Sherlock
- Division of Gastroenterology, Hepatology & Nutrition, McMaster Children’s Hospital, Hamilton, ON, Canada
| | - M Zachos
- Division of Gastroenterology, Hepatology & Nutrition, McMaster Children’s Hospital, Hamilton, ON, Canada
| | - J Arredondo
- Division of Gastroenterology, Hepatology & Nutrition, McMaster Children’s Hospital, Hamilton, ON, Canada
| | - E Ratcliffe
- Division of Gastroenterology, Hepatology & Nutrition, McMaster Children’s Hospital, Hamilton, ON, Canada
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7
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Lara-Pérez LA, Arredondo J, Tejeda MT, Díaz-Fleischer F. Behavioral Responses and Pupa Development Patterns After Hypoxia or Anoxia in a Desiccation-Resistant Anastrepha ludens Strain. Neotrop Entomol 2019; 48:739-747. [PMID: 31093958 DOI: 10.1007/s13744-019-00690-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Accepted: 04/23/2019] [Indexed: 06/09/2023]
Abstract
The aim of this study was to experimentally test for adult cross-resistance to hypoxia or anoxia in a desiccation-resistant population of Anastrepha ludens Loew. We compared desiccation resistant flies with unselected (control) flies by measuring the effect of pre-emergence hypoxia on some fitness parameters (emergence, flight ability, copulation success, latency to copulation, copulation duration, ovary size). Anoxia effects were determined using eye color changes during pupa development and fly emergence after re-oxygenation. Both strains were negatively affected in all measured parameters when exposed to hypoxia for more than 48 h. However, after hypoxia, control flies showed, in general, shorter latency to mate and longer copula duration than desiccation-resistant flies. Anoxia-induced arrest of pupa development, whereas returning to normoxia conditions induced resumption of development. Anoxia period length (longer than 72 h) increased mortality to 100% in the control line, whereas the desiccation-resistant line survived even at 120 h of anoxia. Thus, pre-release hypoxia must not exceed 24 h in order to maintain insect quality independently of fly type.
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Affiliation(s)
- L A Lara-Pérez
- INBIOTECA, Univ Veracruzana, Av. de las Culturas Veracruzanas 101, Col. E. Zapata, Xalapa, Veracruz, Mexico
- Instituto Tecnológico de la Zona Maya, Tecnológico Nacional de México, Mexico City, Quintana Roo, Mexico
| | - J Arredondo
- Depto de Biología, Ecología y Comportamiento, Desarrollo de Métodos, Programa Moscafrut acuerdo SAGARPA-IICA, Metapa de Domínguez, Chiapas, Mexico
| | - M T Tejeda
- Depo de Filtrado Genético, Programa Moscamed acuerdo SAGARPA-IICA, Metapa de Domínguez, Mexico
| | - F Díaz-Fleischer
- INBIOTECA, Univ Veracruzana, Av. de las Culturas Veracruzanas 101, Col. E. Zapata, Xalapa, Veracruz, Mexico.
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8
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Díaz-Fleischer F, Arredondo J, Lasa R, Bonilla C, Debernardi D, Pérez-Staples D, Williams T. Sickly Sweet: Insecticidal Polyols Induce Lethal Regurgitation in Dipteran Pests. Insects 2019; 10:E53. [PMID: 30759873 PMCID: PMC6410098 DOI: 10.3390/insects10020053] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 01/27/2019] [Accepted: 02/06/2019] [Indexed: 11/30/2022]
Abstract
Polyols are commonly used in food and medicines as sweeteners and preservatives but may also have insecticidal properties against some species of Diptera. Here we compared the insecticidal activity and feeding response of glycerol and propylene glycol (PG) on two tephritids: Anastrepha ludens and Anastrepha obliqua, and the drosophilid Drosophila suzukii. First, flies were exposed to solutions of 50% sucrose and the two polyols at concentrations of 1.67 M, 2.78 M and 4.18 M for 24 h and then observed at 24 h intervals for a period of three days. Both polyols elicited strong regurgitation behavior in the three flies and killed them. Regurgitation apparently also reduced flies' body weight, and this was particularly apparent in insects that fed on 4.18 M PG solutions. A high percentage of individuals exposed to PG solutions perished after 72 hours. The number of proboscis extensions, which is associated with feeding preference, was lower in the 4.18 M polyols + sucrose mixtures than in the 50% sucrose solution. Glycerol had a lower insecticidal effect in Anastrepha spp. and very little insecticidal effect in D. suzukii. Finally, elevated regurgitation and mortality was confirmed in A. ludens treated with 1.0⁻2.78 M of erythritol plus sucrose. Our results demonstrate that PG, and to a lower extent glycerol, have the potential for being used as a safer method of insect pest control. The hyper-regurgitation response may contribute to the insecticidal properties of these polyols in Diptera.
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Affiliation(s)
| | - José Arredondo
- Programa Moscafrut SAGARPA-SENASICA, Camino a los Cacaotales S/N, CP 30860, Metapa de Domínguez, Chiapas, Mexico.
| | - Rodrigo Lasa
- Instituto de Ecología AC, Apartado Postal 63, Xalapa, Veracruz 91070, Mexico.
| | - Carlos Bonilla
- INBIOTECA, Universidad Veracruzana, Apartado Postal 250, Xalapa, Veracruz 91000, Mexico.
| | - Diana Debernardi
- INBIOTECA, Universidad Veracruzana, Apartado Postal 250, Xalapa, Veracruz 91000, Mexico.
| | - Diana Pérez-Staples
- INBIOTECA, Universidad Veracruzana, Apartado Postal 250, Xalapa, Veracruz 91000, Mexico.
| | - Trevor Williams
- Instituto de Ecología AC, Apartado Postal 63, Xalapa, Veracruz 91070, Mexico.
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9
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Abstract
Dialkylaminoethyl methacrylates were polymerised by RAFT in tert-butanol to make macro-chain transfer agents for subsequent grafting onto various substrates.
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Affiliation(s)
- J. Arredondo
- Department of Chemical Engineering
- Queen's University
- Kingston
- Canada
| | - P. Champagne
- Department of Chemical Engineering
- Queen's University
- Kingston
- Canada
- Department of Civil Engineering
| | - M. F. Cunningham
- Department of Chemical Engineering
- Queen's University
- Kingston
- Canada
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10
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Arredondo J, Ruiz L, López G, Díaz-Fleischer F. Light Conditions After Emergence Affect Food Consumption and Survival of Ceratitis capitata (Diptera: Tephritidae) Sterile Males. J Econ Entomol 2018; 111:2741-2745. [PMID: 30137466 DOI: 10.1093/jee/toy252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Indexed: 06/08/2023]
Abstract
To favor and standardize fruit fly production, many environmental factors are regulated in a mass-rearing facility. Specifically, in the holding rooms where sterile fruit flies are kept before releasing, they are exposed to constant darkness in order to reduce aggressive interactions and depletion of energy resources. However, such light conditions could negatively affect the quality traits and male mating performance. The objective of this study was to determine whether light conditions have an effect on quality traits in mass-reared 'Mediterranean fruit flies' Ceratitis capitata (Wiedemann) (Diptera: Tephritidae). Under laboratory conditions and in two sequential experiments, we studied the effect of 1) different light intensities and 2) photoperiods, on adult food consumption, adult body weight, survival, and percent of flying and calling males. In the first experiment, sterile male flies were exposed to different light intensities during 3 d after emergence: 1000, 500, or 250 lux, with a 12:12 photoperiod. Complete darkness was used as a control. In the second experiment, adult flies were exposed to the following photoperiods (L(1000 lux)-D): 14-10, 12-12, 8-16, 4-20, and 0-24 as a control. Our results showed that flies under darkness ingested less food, were heavier, and exhibited higher survival than flies under any treatment of light intensity or photoperiod. Furthermore, the percentage of fliers and number of calling males did not differ among treatments. We conclude that holding males for 3 d under darkness do not affect their quality; indeed, emerging under this condition appears to favor them. The implications of these findings for SIT programs are discussed.
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Affiliation(s)
- José Arredondo
- Programa Moscafrut SAGARPA-SENASICA, Camino a los Cacaotales S/N, CP, Metapa de Domínguez, Chiapas, Mexico
| | - Lia Ruiz
- Programa Moscafrut SAGARPA-SENASICA, Camino a los Cacaotales S/N, CP, Metapa de Domínguez, Chiapas, Mexico
| | - Gladis López
- Programa Moscafrut SAGARPA-SENASICA, Camino a los Cacaotales S/N, CP, Metapa de Domínguez, Chiapas, Mexico
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11
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Ielpo B, Simó V, Pastor E, Arredondo J, Villafañe A, Fuentes S, Padilla L, Orille V, Lorenzo E, Corona A, Diago MV. Combined transanal minimally invasive surgery (TAMIS) and retroperitoneal laparoscopy for resection of lymph node recurrence of ovarian cancer. Tech Coloproctol 2018; 22:725. [PMID: 30225755 DOI: 10.1007/s10151-018-1849-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 09/01/2018] [Indexed: 11/28/2022]
Affiliation(s)
- B Ielpo
- Department of General Surgery, León University Hospital, León, Spain.
| | - V Simó
- Department of General Surgery, León University Hospital, León, Spain
| | - E Pastor
- Department of General Surgery, León University Hospital, León, Spain
| | - J Arredondo
- Department of General Surgery, León University Hospital, León, Spain
| | - A Villafañe
- Department of General Surgery, León University Hospital, León, Spain
| | - S Fuentes
- Department of General Surgery, León University Hospital, León, Spain
| | - L Padilla
- Department of Gynecology, León University Hospital, León, Spain
| | - V Orille
- Department of Gynecology, León University Hospital, León, Spain
| | - E Lorenzo
- Department of Gynecology, León University Hospital, León, Spain
| | - A Corona
- Department of Gynecology, León University Hospital, León, Spain
| | - M V Diago
- Department of General Surgery, León University Hospital, León, Spain
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12
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Arredondo J, Ruiz L, Montoya P, Díaz-Fleischer F. Packing and Postirradiation Handling of the Anastrepha ludens (Diptera: Tephritidae) Tapachula-7 Genetic Sexing Strain: Combined Effects of Hypoxia, Pupal Size, and Temperature on Adult Quality. J Econ Entomol 2018; 111:570-574. [PMID: 29415218 DOI: 10.1093/jee/toy013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The production of genetic sexing strains (GSS) of tephritid flies for sterile insect technique (SIT) programs convey the need to determine new conditions for packing and shipment since these flies are more susceptible to stressors than standard bisexual strains. We studied the effect of hypoxia, pupae size, and temperature on the new GSS Tapachula-7 of Anastrepha ludens flies (Diptera: Tephritidae). In one experiment, we tested the interaction size hypoxia using three pupae sizes, 6 (11.6 ± 1.1 mg), 7 (15.3 ± 1.5 mg), and 8 (17.9 ± 1.3 mg) (95% of produced pupae exhibit these categories of size), and four hypoxia periods, 12, 24, 36, 48 h and a control. In a second experiment, we tested two periods of hypoxia (24 and 48 h) and four temperatures: 15, 20, 25, and 30°C and a control (without hypoxia at laboratory temperature). Our results showed that the emergence and percent of fliers from the pupae exposed to hypoxia were adversely affected; however, emergence was higher in pupae of size 7. Treatment for 12 and 24 h hypoxia led to a higher number of fliers. In the case of the interaction of hypoxia and temperature, it was observed that those flies that emerged from the pupae exposed to hypoxia at 15 and 20°C exhibited quality control parameters similar to those that were not exposed to hypoxia. We discuss our results on the basis of the metabolic response to these factors and its application in the SIT programs.
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Affiliation(s)
- José Arredondo
- Programa Moscafrut SAGARPA-SENASICA, Camino a los Cacaoatales, Metapa de Domínguez, Chiapas, México
| | - Lia Ruiz
- Programa Moscafrut SAGARPA-SENASICA, Camino a los Cacaoatales, Metapa de Domínguez, Chiapas, México
| | - Pablo Montoya
- Programa Moscafrut SAGARPA-SENASICA, Camino a los Cacaoatales, Metapa de Domínguez, Chiapas, México
| | - Francisco Díaz-Fleischer
- INBIOTECA, Universidad Veracruzana, Av. de las Culturas Veracruzanas, Col. Emiliano Zapata, Xalapa, Veracruz, México
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Arredondo J, Gaines T, Manian S, Vilalta C, Bañuelos A, Strathdee SA, Beletsky L. The law on the streets: Evaluating the impact of Mexico's drug decriminalization reform on drug possession arrests in Tijuana, Mexico. Int J Drug Policy 2018; 54:1-8. [PMID: 29306177 DOI: 10.1016/j.drugpo.2017.12.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 12/07/2017] [Accepted: 12/08/2017] [Indexed: 01/31/2023]
Abstract
BACKGROUND In 2009, Mexican Federal Government enacted "narcomenudeo" reforms decriminalizing possession of small amounts of drugs, delegating prosecution of retail drug sales to the state courts, and mandating treatment diversion for habitual drug users. There has been insufficient effort to formally assess the decriminalization policy's population-level impact, despite mounting interest in analagous reforms across the globe. METHODS Using a dataset of municipal police incident reports, we examined patterns of drug possession, and violent and non-violent crime arrests between January 2009 and December 2014. A hierarchical panel data analysis with random effects was conducted to assess the impact of narcomenudeo's drug decriminalization provision. RESULTS The reforms had no significant impact on the number of drug possession or violent crime arrests, after controlling for other variables (e.g. time trends, electoral cycles, and precinct-level socioeconomic factors). Time periods directly preceding local elections were observed to be statistically associated with elevated arrest volume. CONCLUSIONS Analysis of police statistics parallel prior findings that Mexico's reform decriminalizing small amounts of drugs does not appear to have significantly shifted drug law enforcement in Tijuana. More research is required to fully understand the policy transformation process for drug decriminalization and other structural interventions in Mexico and similar regional and international efforts. Observed relationship between policing and political cycles echo associations in other settings whereby law-and-order activities increase during mayoral electoral campaigns.
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Affiliation(s)
- J Arredondo
- University of California, San Diego. 9500 Gilman Dr, La Jolla, CA 92093, USA; San Diego State University, San Diego. 5500 Campanile Drive, San Diego, CA 92182, USA.
| | - T Gaines
- University of California, San Diego. 9500 Gilman Dr, La Jolla, CA 92093, USA.
| | - S Manian
- University of California, San Diego. 9500 Gilman Dr, La Jolla, CA 92093, USA.
| | - C Vilalta
- Center for Research in Geography and Geomatics (CentroGeo), Lomas de Padierna, CP 14240, CDMX, Mexico.
| | - A Bañuelos
- Secretaría de Seguridad Pública Municipal, Dirección de Planeación y Proyectos Estratégicos. Blvd Cuauhtémoc Sur y Rio Suchiate #2141, Colonia Marrón, CP 22015, Tijuana, Mexico.
| | - S A Strathdee
- University of California, San Diego. 9500 Gilman Dr, La Jolla, CA 92093, USA.
| | - L Beletsky
- University of California, San Diego. 9500 Gilman Dr, La Jolla, CA 92093, USA; Northeastern University, School of Law & Bouvé College of Health Sciences. 360 Huntington Ave., Boston, MA 02115, USA.
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14
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Arredondo J, Strathdee SA, Cepeda J, Abramovitz D, Artamonova I, Clairgue E, Bustamante E, Mittal ML, Rocha T, Bañuelos A, Olivarria HO, Morales M, Rangel G, Magis C, Beletsky L. Measuring improvement in knowledge of drug policy reforms following a police education program in Tijuana, Mexico. Harm Reduct J 2017; 14:72. [PMID: 29117858 PMCID: PMC5678566 DOI: 10.1186/s12954-017-0198-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 10/20/2017] [Indexed: 01/07/2023] Open
Abstract
Background Mexico’s 2009 “narcomenudeo reform” decriminalized small amounts of drugs, shifting some drug law enforcement to the states and mandating drug treatment diversion instead of incarceration. Data from Tijuana suggested limited implementation of this harm reduction-oriented policy. We studied whether a police education program (PEP) improved officers’ drug and syringe policy knowledge, and aimed to identify participant characteristics associated with improvement of drug policy knowledge. Methods Pre- and post-training surveys were self-administered by municipal police officers to measure legal knowledge. Training impact was assessed through matched paired nominal data using McNemar’s tests. Multivariable logistic regression was used to identify predictors of improved legal knowledge, as measured by officers’ ability to identify conceptual legal provisions related to syringe possession and thresholds of drugs covered under the reform. Results Of 1750 respondents comparing pre- versus post training, officers reported significant improvement (p < 0.001) in their technical understanding of syringe possession (56 to 91%) and drug amounts decriminalized, including marijuana (9 to 52%), heroin (8 to 71%), and methamphetamine (7 to 70%). The training was associated with even greater success in improving conceptual legal knowledge for syringe possession (67 to 96%) (p < 0.001), marijuana (16 to 91%), heroin (11 to 91%), and methamphetamine (11 to 89%). In multivariable modeling, those with at least a high school education were more likely to exhibit improvement of conceptual legal knowledge of syringe possession (adjusted odds ratio [aOR] 2.6, 95% CI 1.4–3.2) and decriminalization for heroin (aOR 2.7, 95% CI 1.3–4.3), methamphetamine (aOR 2.2, 95% CI 1.4–3.2), and marijuana (aOR 2.5, 95% CI 1.6–4). Conclusions Drug policy reform is often necessary, but not sufficient to achieve public health goals because of gaps in translating formal laws to policing practice. To close such gaps, PEP initiatives bundling occupational safety information with relevant legal content demonstrate clear promise. Our findings underscore additional efforts needed to raise technical knowledge of the law among personnel tasked with its enforcement. Police professionalization, including minimum educational standards, appear critical for aligning policing with harm reduction goals.
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Affiliation(s)
- J Arredondo
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA. .,San Diego State University, San Diego, CA, USA.
| | - S A Strathdee
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA
| | - J Cepeda
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA
| | - D Abramovitz
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA
| | - I Artamonova
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA
| | - E Clairgue
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA
| | - E Bustamante
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA
| | - M L Mittal
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA.,Facultad de Medicina, Universidad Xochicalco, Tijuana, Mexico
| | - T Rocha
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA.,San Diego State University, San Diego, CA, USA
| | - A Bañuelos
- Secretaría de Seguridad Pública Municipal, Dirección de Planeación y Proyectos Estratégicos, Tijuana, Mexico
| | - H O Olivarria
- Secretaría de Seguridad Pública Municipal, Instituto de Capacitación y Adiestramiento Profesional (ICAP), Tijuana, Mexico
| | - M Morales
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA.,San Diego State University, San Diego, CA, USA
| | - G Rangel
- Comisión de Salud Fronteriza, México-Estados Unidos, Tijuana, Mexico
| | - C Magis
- Centro Nacional para la Prevención y el Control del VIH y el SIDA (Censida), Mexico City, Mexico
| | - L Beletsky
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA.,School of Law and Bouvé College of Health Sciences, Northeastern University, Boston, USA
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Arredondo J, Ruiz L, López G, Díaz-Fleischer F. Visibility and Persistence of Marker Dyes and Effect on the Quality and Mating Competitiveness of Mass-Reared Flies (Diptera: Tephritidae): Anastrepha obliqua and Bisexual and Genetic Sexing (Tapachula-7) Strains of A. ludens. J Econ Entomol 2017; 110:1653-1657. [PMID: 28549185 DOI: 10.1093/jee/tox154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Indexed: 06/07/2023]
Abstract
Fluorescent dyes are commonly used in the sterile insect technique (SIT) for marking insects for a proper identification after recapture. However, the quality of the mark must be balanced against insect performance, because dyes can negatively affect some parameters of insect performance and reduce their effectiveness in control with the SIT. We determined the visibility and persistence and the effect of dyes on the quality of Anastrepha obliqua (Macquart) and Anastrepha ludens (Loew) (bisexual and genetic sexing strains) by testing four concentrations of a dye (Day-Glo) from 0 to 2.5 g dye/kg of pupae. Visibility and persistence of the mark were positively affected by dose and negatively affected by the length of time the samples were kept in a solution of 75% alcohol. However, upon dissection, even the lowest dose of dye was visible under a fluorescence microscope. Between dyed and undyed pupae (control), no significant differences were observed in rates of emergence, fliers and flight ability, and survival in two tests, with water and without food and without water and food, at any of the concentrations tested. Furthermore, no significant difference in mating competitiveness was detected between control pupae and those dyed at 1.0 and 2.5 g dye/kg pupae. We discuss our results with the possibility of reducing the dose of dye in these three flies, because the heads are large enough to capture sufficient particles to permit identification with the current methods of detection.
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Affiliation(s)
- José Arredondo
- Programa Moscafrut SAGARPA-SENASICA, Camino a los Cacaotales S/N, CP 30860, Metapa de Domínguez, Chiapas, Mexico
| | - Lia Ruiz
- Programa Moscafrut SAGARPA-SENASICA, Camino a los Cacaotales S/N, CP 30860, Metapa de Domínguez, Chiapas, Mexico
| | - Gladis López
- Programa Moscafrut SAGARPA-SENASICA, Camino a los Cacaotales S/N, CP 30860, Metapa de Domínguez, Chiapas, Mexico
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16
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Tejeda MT, Arredondo J, Liedo P, Pérez-Staples D, Ramos-Morales P, Díaz-Fleischer F. Reasons for success: Rapid evolution for desiccation resistance and life-history changes in the polyphagous flyAnastrepha ludens. Evolution 2016; 70:2583-2594. [DOI: 10.1111/evo.13070] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 08/31/2016] [Accepted: 09/08/2016] [Indexed: 11/29/2022]
Affiliation(s)
- Marco T. Tejeda
- INBIOTECA; Universidad Veracruzana; Xalapa Veracruz 91090 México
- Departamento de Cría; Programa Moscamed acuerdo SAGARPA-IICA; Metapa de Domínguez Chiapas 30860 México
| | - José Arredondo
- Departamento de Biología, Ecología y Comportamiento; Desarrollo de Métodos; Programa Moscafrut acuerdo SAGARPA-IICA Metapa de Domínguez Chiapas 30860 México
| | - Pablo Liedo
- El Colegio de la Frontera Sur; Tapachula Chiapas 30700 México
| | | | - Patricia Ramos-Morales
- UNAM, Facultad de Ciencias; Laboratorio de Genética y Toxicología Ambiental and Drosophila Stock Center México; Distrito Federal 04510 México
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17
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Arredondo J, Baixauli J, Pastor C, Chopitea A, Sola JJ, González I, A-Cienfuegos J, Martínez P, Rodriguez J, Hernández-Lizoain JL. Mid-term oncologic outcome of a novel approach for locally advanced colon cancer with neoadjuvant chemotherapy and surgery. Clin Transl Oncol 2016; 19:379-385. [PMID: 27496023 DOI: 10.1007/s12094-016-1539-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Accepted: 07/28/2016] [Indexed: 12/21/2022]
Abstract
PURPOSE Neoadjuvant chemotherapy is being actively tested as an emerging alternative for the treatment of locally advanced colon cancer (LACC) patients, resembling its use in other gastrointestinal tumors. This study assesses the mid-term oncologic outcome of LACC patients treated with oxaliplatin and fluoropyrimidines-based preoperative chemotherapy followed by surgery. METHODS AND PATIENTS Patients with radiologically resectable LACC treated with neoadjuvant therapy between 2009 and 2014 were retrospectively analyzed. Radiological, metabolic, and pathological tumor response was assessed. Both postoperative complications, relapse-free survival (RFS), and overall survival (OS) were studied. RESULTS Sixty-five LACC patients who received treatment were included. Planned treatment was completed by 93.8 % of patients. All patients underwent surgery without delay. The median time between the start of chemotherapy and surgery was 71 days (65-82). No progressive disease was observed during preoperative treatment. A statistically significant tumor volume reduction of 62.5 % was achieved by CT scan (39.8-79.8) (p < 0.001). It was also observed a median reduction of 40.5 % (24.2-63.7 %) (p < 0.005) of SUVmax (Standard Uptake Value) by PET-CT scan. Complete pathologic response was achieved in 4.6 % of patients. Postoperative complications were observed in 15.4 % of patients, with no cases of mortality. After a median follow-up of 40.1 months, (p 25-p 75: 27.3-57.8) 3-5 year actuarial RFS was 88.9-85.6 %, respectively. Five-year actuarial OS was 95.3 %. CONCLUSION Preoperative chemotherapy in LACC patients is safe and able to induce major tumor regression. Survival times are encouraging, and further research seems warranted.
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Affiliation(s)
- J Arredondo
- Department of General Surgery, Complejo Asistencial Universitario de León, c/Altos de Nava s/n, 24008, León, Spain.
| | - J Baixauli
- Department of General Surgery, Clínica Universidad de Navarra, Pamplona, Spain
| | - C Pastor
- Department of General Surgery, Fundación Jiménez-Díaz, Madrid, Spain
| | - A Chopitea
- Department of Medical Oncology, Clínica Universidad de Navarra, Pamplona, Spain
| | - J J Sola
- Department of Pathology, Hospital San Pedro, Logroño, Spain
| | - I González
- Department of Radiology, Clínica Universidad de Navarra, Pamplona, Spain
| | - J A-Cienfuegos
- Department of General Surgery, Clínica Universidad de Navarra, Pamplona, Spain
| | - P Martínez
- Department of General Surgery, Centro Médico de Asturias, Oviedo, Spain
| | - J Rodriguez
- Department of Medical Oncology, Clínica Universidad de Navarra, Pamplona, Spain
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Werb D, Strathdee SA, Vera A, Arredondo J, Beletsky L, Gonzalez-Zuniga P, Gaines T. Spatial patterns of arrests, police assault and addiction treatment center locations in Tijuana, Mexico. Addiction 2016; 111:1246-56. [PMID: 26879179 PMCID: PMC4899159 DOI: 10.1111/add.13350] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 07/06/2015] [Accepted: 02/10/2016] [Indexed: 12/19/2022]
Abstract
AIMS In the context of a public health-oriented drug policy reform in Mexico, we assessed the spatial distribution of police encounters among people who inject drugs (PWID) in Tijuana, determined the association between these encounters and the location of addiction treatment centers and explored the association between police encounters and treatment access. DESIGN Geographically weighted regression (GWR) and logistic regression analysis using prospective spatial data from a community-recruited cohort of PWID in Tijuana and official geographical arrest data from the Tijuana Municipal Police Department. SETTING Tijuana, Mexico. PARTICIPANTS A total of 608 participants (median age 37; 28.4% female) in the prospective Proyecto El Cuete cohort study recruited between January and December 2011. MEASUREMENTS We compared the mean distance of police encounters and a randomly distributed set of events to treatment centers. GWR was undertaken to model the spatial relationship between police interactions and treatment centers. Logistic regression analysis was used to investigate factors associated with reporting police interactions. FINDINGS During the study period, 27.5% of police encounters occurred within 500 m of treatment centers. The GWR model suggested spatial correlation between encounters and treatment centers (global R(2) = 0.53). Reporting a need for addiction treatment was associated with reporting arrest and police assault [adjusted odds ratio = 2.74, 95% confidence interval (CI) = 1.25-6.02, P = 0.012]. CONCLUSIONS A geospatial analysis suggests that, in Mexico, people who inject drugs are at greater risk of being a victim of police violence if they consider themselves in need of addiction treatment, and their interactions with police appear to be more frequent around treatment centers.
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Affiliation(s)
- D Werb
- Division of Global Public Health, Department of Medicine, University of California, San Diego,BC Centre for Excellence in HIV/AIDS, Vancouver, Canada
| | - SA Strathdee
- Division of Global Public Health, Department of Medicine, University of California, San Diego
| | - A Vera
- Division of Global Public Health, Department of Medicine, University of California, San Diego
| | - J Arredondo
- Division of Global Public Health, Department of Medicine, University of California, San Diego
| | - L Beletsky
- Division of Global Public Health, Department of Medicine, University of California, San Diego,Northeastern University School of Law & Bouvé College of Health Sciences, Boston
| | - P Gonzalez-Zuniga
- Division of Global Public Health, Department of Medicine, University of California, San Diego
| | - T Gaines
- Division of Global Public Health, Department of Medicine, University of California, San Diego
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19
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Gould M, Dowhaniuk J, Arredondo J, Cheng J, Azzopardi P, Hu T, Mileski H, Carpenter A, Pai N, Brill H. Clinical and Serologic Patterns in a Large Canadian Paediatric Cohort with Celiac Disease, At Presentation and Follow-Up. Paediatr Child Health 2016. [DOI: 10.1093/pch/21.supp5.e73] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
BACKGROUND: Celiac Disease (CD) is a chronic illness involving an autoimmune response to gluten, leading to small intestinal inflammation in genetically susceptible individuals. A weakness in the North American pediatric CD literature exists around serologic outcomes after initiation of a gluten free diet (GFD). Only one published North American pediatric study looks at normalization of TTG after initiation of a GFD and only assessed TTG normalization at 6 months post diagnosis. Data is also limited on other clinical patters such as levels of anemia and BMI over the course of treatment of CD.
OBJECTIVES: We sought to characterize serologic and clinical patterns in CD over an extended course using one of the largest databases of pediatric CD in North America.
DESIGN/METHODS: A retrospective review of all patients diagnosed with CD at our institution from 1996-2014 was completed. Patients required biopsy-proven CD according to the Marsh criteria. Data abstracted included age at diagnosis, gender, reason for referral, comorbidities, family history of CD and autoimmune conditions, BMI, hemoglobin, MVC, fer-ritin, IgA and anti-TTG levels. A Cochran-Armitage trend test was used to trend anti-TTG and hemoglobin normalization over time
RESULTS: 227 patients were identified who met study criteria. Visits with associated anti-TTG or hemoglobin analysis were categorized by time since diagnosis. At 6-12 months, 12-17 months, 18-23 months, 24-29 months, 30-35 months and 36-41 months from diagnosis 66.7% (n=144), 75% (n=40), 85.6% (n= 76), 86.9 (n= 23), 93.5 (n=62) and 95% (n= 20) of patients had normalized their anti-TTG levels respectively from a baseline of 100% abnormal TTG and 5.7% (n=140), 7.3% (n=41), 5.1% (n=77), 5.0% (n=20), 1.6% (n=60) and 5.0% (n=20) had anemia versus 18% at presentation.
CONCLUSION: The small p-value (p=<0.0001) for the Cochran-Armitage test for anti-TTG normalization indicates the increased probability of a normalized anti-TTG as time from diagnosis increases. Knowledge of the slope of this trend could assist clinicians with better understanding the effectiveness of treatment for their patients. In this cohort, anti-TTG levels normalized over a broad time span, with increasing numbers of patients normalizing their anti-TTG through to the end of the study period. Further research goals aim to determine predictors of early anti-TTG normalization. In this cohort, the proportion of patient with anemia quickly decreased from a baseline of 18%, to general pediatric population levels between 6-12 months after treatment initiation and remained stable in this range through to the end of the study period with a non-significant p value (p=0.06) for trend over time.
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20
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Arredondo J, Ruiz L, Hernández E, Montoya P, Díaz-Fleischer F. Comparison of Anastrepha ludens (Diptera: Tephritidae) Bisexual and Genetic Sexing (Tapachula-7) Strains: Effect of Hypoxia, Fly Density, Chilling Period, and Food Type on Fly Quality. J Econ Entomol 2016; 109:572-579. [PMID: 26685109 DOI: 10.1093/jee/tov350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The use of genetic sexing strain (GSS) insects in the sterile insect technique (SIT) makes necessary the revision of quality parameters of some stressful steps used during the packing process for aerial release because of possible differences in tolerance between fly strains. Here, we determined the effect of three periods of hypoxia (12, 24, and 36 h at pupal stage), three cage densities (1.0, 1.3, and 1.5 flies/cm2), two different foods (protein/sugar (1/24) and Mubarqui), and three chilling times (20 min [control], 90, and 180 min) on the quality parameters of flies of two Anastrepha ludens (Loew) strains (bisexual and GSS Tapachula-7). In general, the response to stressful conditions of both fly strains was qualitatively equivalent but quantitatively different, as flies of both strains responded equally to the stressful factors; however, flies of Tapachula-7 exhibited lower quality parameters than the control flies. Thus, hypoxia affected the flying ability but not the emergence or longevity of flies. The food type affected the adult weight; protein/sugar produced heavier flies that also survived longer and had a greater mating propensity. Flies under the lowest density were better fliers that those at the other two densities. Increasing chilling time reduced flight ability but not longevity or mating propensity. The implications of these findings for the use of A. ludens GSS in SIT programs are discussed herein.
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21
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Landeta-Escamilla A, Hernández E, Arredondo J, Díaz-Fleischer F, Pérez-Staples D. Male irradiation affects female remating behavior in Anastrepha serpentina (Diptera: Tephritidae). J Insect Physiol 2016; 85:17-22. [PMID: 26616467 DOI: 10.1016/j.jinsphys.2015.11.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2015] [Revised: 11/22/2015] [Accepted: 11/23/2015] [Indexed: 06/05/2023]
Abstract
Female remating in target pest species can affect the efficacy of control methods such as the Sterile Insect Technique (SIT) but very little is known about the postcopulatory mating behavior of these pests. In this study, we investigated the remating behavior of female Anastrepha serpentina (Diptera: Tephritidae), an oligophagous pest of Sapotaceae. First, we tested how long the sexual refractory period of females lasted after an initial mating. Second, we tested the effect of male and female sterility, female ovipositing opportunities and male density on female propensity to remate. Lastly, we tested if the amount of sperm stored by females was correlated to the likelihood of females to remate. We found that receptivity of mass-reared A. serpentina females had a bimodal response, with up to 16% of mass-reared A. serpentina females remating five days after the initial copulation, decreasing to 2% at 10 and 15 days and increasing to 13% after 20 days. Compared to fertile males, sterile males were less likely to mate and less likely to inhibit females from remating. Copula duration of sterile males was shorter compared to fertile males. Remating females were less likely to mate with a sterile male as a second mate. Sterile females were less likely to mate or remate compared to fertile females. Opportunity to oviposit and male density had no effect on female remating probability. Sperm numbers were not correlated with female likelihood to remate. Information on the post-copulatory behavior of mass-reared A. serpentina will aid fruit fly managers in improving the quality of sterile males. We discuss our results in terms of the differences this species presents in female remating behavior compared to other tephritids.
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Affiliation(s)
- Anais Landeta-Escamilla
- INBIOTECA, Universidad Veracruzana, Av. de las Culturas Veracruzanas 101, Col. Emiliano Zapata, Xalapa, Veracruz C.P. 91090, Mexico
| | - Emilio Hernández
- Programa Moscafrut SAGARPA-IICA, Camino a los Cacahotales S/N, C.P. 30860 Metapa de Domínguez, Chiapas, Mexico
| | - José Arredondo
- Programa Moscafrut SAGARPA-IICA, Camino a los Cacahotales S/N, C.P. 30860 Metapa de Domínguez, Chiapas, Mexico
| | - Francisco Díaz-Fleischer
- INBIOTECA, Universidad Veracruzana, Av. de las Culturas Veracruzanas 101, Col. Emiliano Zapata, Xalapa, Veracruz C.P. 91090, Mexico
| | - Diana Pérez-Staples
- INBIOTECA, Universidad Veracruzana, Av. de las Culturas Veracruzanas 101, Col. Emiliano Zapata, Xalapa, Veracruz C.P. 91090, Mexico.
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Arredondo J, Baixauli J, Rodríguez J, Beorlegui C, Arbea L, Zozaya G, Torre W, -Cienfuegos JA, Hernández-Lizoáin JL. Patterns and management of distant failure in locally advanced rectal cancer: a cohort study. Clin Transl Oncol 2015; 18:909-14. [PMID: 26666769 DOI: 10.1007/s12094-015-1462-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 11/23/2015] [Indexed: 01/03/2023]
Abstract
PURPOSE To determine the long-term outcomes of locally advanced rectal cancer (LARC) treated with neoadjuvant chemoradiation (CRT) and surgery, and to analyze the management and survival once distant failure has developed. METHODS Data from LARC patients treated from 2000 to 2010 were retrospectively reviewed. CRT protocols were based on fluoropirimidines ± oxaliplatin. Follow-up consisted of physical examination, carcinoembryonic antigen levels, and chest-abdominal-pelvic CT scan. RESULTS The study included 228 patients with a mean age of 59 years. Forty-eight (21.1 %) patients had distant recurrence and 6 patients (2.6 %) had local recurrence. Median follow-up was 49 months. The 5- and 10-year actuarial disease free survival was 75.3 and 65.0 %, respectively. The 5- and 10-year actuarial overall survival (OS) was 89.6 and 71.2 %, respectively. Patients were classified as having liver (14 patients) or lung (27 patients) relapse according to the organ firstly metastasized. The variables significantly associated by univariate Cox analysis to survival were the achievement of an R0 metastases resection and the Köhne risk index, while the metastatic site showed a statistical trend. By multivariate Cox analysis, the only variable associated with survival was a R0 resection (HR = 16.3, p < 0.001). Median OS for patients undergoing a R0 resection was 73 months (95 % CI 67.8-78.2) compared to 25 months (95 % CI 5.47-44.5) in those non-operated patients (p < 0.001). CONCLUSIONS Combined treatment for LARC obtains a 5-year OS rounding 90 %. Follow-up based on thoracic-abdominal CT scan allows an early diagnosis of metastatic lesions. Surgical resection of metastases, regardless of their location, greatly increases the patient's survival rate.
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Affiliation(s)
- J Arredondo
- Department of General Surgery, Complejo Asistencial Universitario de León, c/Altos de Nava s/n, 24008, León, Spain.
| | - J Baixauli
- Department of General Surgery, Clínica Universidad de Navarra, Avenida Pío XII 36, 31008, Pamplona, Spain
| | - J Rodríguez
- Department of Medical Oncology, Clínica Universidad de Navarra, Avenida Pío XII 36, 31008, Pamplona, Spain
| | - C Beorlegui
- Department of Pathology, School of Medicine, Universidad de Navarra, Avenida Pío XII 36, 31008, Pamplona, Spain
| | - L Arbea
- Department of Radiation Oncology, Clínica Universidad de Navarra, Avenida Pío XII 36, 31008, Pamplona, Spain
| | - G Zozaya
- Department of General Surgery, Clínica Universidad de Navarra, Avenida Pío XII 36, 31008, Pamplona, Spain
| | - W Torre
- Department of Thoracic Surgery, Clínica Universidad de Navarra, Avenida Pío XII 36, 31008, Pamplona, Spain
| | - J A -Cienfuegos
- Department of General Surgery, Clínica Universidad de Navarra, Avenida Pío XII 36, 31008, Pamplona, Spain
| | - J L Hernández-Lizoáin
- Department of General Surgery, Clínica Universidad de Navarra, Avenida Pío XII 36, 31008, Pamplona, Spain
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Arredondo J, de la Hoz ML, Álvarez R, Hernando M. [Small bowel intussusception in the adult caused by ileal submucous lipoma]. An Sist Sanit Navar 2015; 38:343-6. [PMID: 26486546 DOI: 10.23938/assn.0076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We present the case of a 68 year-old male patient with secondary intestinal intussuspection due to a submucous li-poma of the ileum. This is a rare entity in adults and is usually due to an organic lesion. The clinical manifestation is characterized by vomiting, abdominal pain and melenas. In our case the patient, following a colonoscopy and an abdominal CT-scan, was subjected to an extended resection of caecum and terminal ilium. At present, the precision of the etiological diagnosis of intussuspections has increased thanks to the development of image tests, like CT-scan. Early surgical treatment is recommended, without intraoperative deintussuspection given the high risk of presenting a malign or ischemic lesion in the adult.
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Affiliation(s)
- J Arredondo
- Servicio de Cirugía General, Complejo Asistencial Universitario de León, León, 24001, Spain.
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Arredondo J, Hoz MDL, Álvarez R, Hernando M. Invaginación de intestino delgado en el adulto causada por lipoma submucoso de íleon. An Sist Sanit Navar 2015. [DOI: 10.4321/s1137-66272015000200022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Rolon M, Mandujano EP, Beletsky L, Arredondo J, Rocha T, Olivarria O, Bañuelos A, Gomez MR, Strathdee S. Más miedo a una enfermedad que a un balazo [More afraid of a disease than
a bullet]: Implementation of system-wide needlestick injury surveillance
system in the Tijuana police department, Mexico. Ann Glob Health 2015. [DOI: 10.1016/j.aogh.2015.02.534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Arredondo J, Ruiz L, López G, Díaz-Fleischer F. Determination of the Host Status of the 'Persian' Lime (Citrus latifolia Tanaka) for Anastrepha ludens (Loew) (Diptera: Tephritidae). J Econ Entomol 2015; 108:77-87. [PMID: 26470106 DOI: 10.1093/jee/tou014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 10/17/2014] [Indexed: 06/05/2023]
Abstract
Field and laboratory no-choice oviposition tests were performed to determine whether the 'Persian' lime (Citrus latifolia Tanaka) is a host of Anastrepha ludens Loew (Diptera: Tephritidae). Trapping and fruit sampling were performed to determine adult population densities and the level of infestation in the two lime orchards. Additionally, unharvested and harvested limes were exposed to sexually mature flies and the number of eggs laid and the immature developmental rates were determined. As a control, parthenocarpic 'Ataulfo' mangoes (Mangifera indica L.), a suitable host for A. ludens, were exposed to similar experimental procedures. The fecundity and fertility of adults obtained from limes and mangoes were compared. Our results demonstrate that A. ludens, under forced infestation conditions, oviposit on limes and also on control fruit. However, differences were detected in unharvested and harvested fruit, as unharvested limes were not infested. In the case of harvested fruit, the numbers of eggs laid and survival rates of immatures were significantly lower for 'Persian' limes compared with mangoes. Egg clutches were larger in limes than in mangoes, and most were deposited in the albedo rather than in the pulp. Moreover, oviposition rates were much higher in limes than in mangoes. Despite the fact that few of the immatures reached adulthood, the females obtained from limes were as fecund and fertile as those obtained from mangoes. Although adult A. ludens flies were captured in the two orchards, fruit sampling showed a complete absence of natural infestation among 'Persian' limes. We discuss the importance of our findings for determining the host status for 'Persian' limes.
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Affiliation(s)
- José Arredondo
- Programa Moscafrut SAGARPA-IICA, Camino a los Cacahotales S/N, CP 30860, Metapa de Domínguez, Chiapas, Mexico
| | - Lia Ruiz
- Programa Moscafrut SAGARPA-IICA, Camino a los Cacahotales S/N, CP 30860, Metapa de Domínguez, Chiapas, Mexico
| | - Gladis López
- Programa Moscafrut SAGARPA-IICA, Camino a los Cacahotales S/N, CP 30860, Metapa de Domínguez, Chiapas, Mexico
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Tejeda MT, Arredondo J, Pérez-Staples D, Ramos-Morales P, Liedo P, Díaz-Fleischer F. Effects of size, sex and teneral resources on the resistance to hydric stress in the tephritid fruit fly Anastrepha ludens. J Insect Physiol 2014; 70:73-80. [PMID: 25239667 DOI: 10.1016/j.jinsphys.2014.08.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 08/21/2014] [Accepted: 08/23/2014] [Indexed: 06/03/2023]
Abstract
Water availability is recognized as one of the most important factors in the distribution and activity of terrestrial organisms. In the case of insects, hydric stress imposes a major challenge for survival because of the small surface-area-to-volume ratio they exhibit. In general, stress resistance is expected to co-vary positively with size; however, this pattern can become obscured in insects that exhibit sexual size dimorphism, as sexes differ in size and/or shape and have dissimilar resource allocations. In the present study, we use an allometric-based approach to (i) assess the desiccation and starvation stress resistance of teneral Anastrepha ludens flies, (ii) disentangle the relationships between resistance, size and sex and (iii) examine the adult fly body differences in water and lipid contents before and after exposure to stress. After controlling for sexual size dimorphism, an allometric increase of resistance with overall size was observed for all stress-based treatments. The scaling exponents that define the proportion of increase resistance varied with size traits and with type and degree of hydric stress. In this allometric relationship, and also in the relationships between mass and wing length and between size and teneral resources, the sexes maintained similar scaling exponents but differed in the intercepts. Males were more resistant to stress than females; this competitive advantage is probably linked to greater amounts of teneral lipids and more water use during stress.
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Affiliation(s)
- M T Tejeda
- INBIOTECA, Universidad Veracruzana, Av. Culturas Veracruzanas No. 101, Col. E. Zapata, CP 91090 Xalapa, Veracruz, Mexico.
| | - J Arredondo
- Departamento de Biología, Ecología y Comportamiento, Desarrollo de métodos, Programa Moscafrut acuerdo SAGARPA-IICA, Camino a cacahoatales S/N, CP 30860 Metapa de Domínguez, Chiapas, Mexico
| | - D Pérez-Staples
- INBIOTECA, Universidad Veracruzana, Av. Culturas Veracruzanas No. 101, Col. E. Zapata, CP 91090 Xalapa, Veracruz, Mexico
| | - P Ramos-Morales
- Laboratorio de Genética y Toxicología Ambiental & Drosophila Stock Center México, Facultad de Ciencias, UNAM, Universidad 3000 Circuito Exterior S/N, C.P. 04510 Ciudad Universitaria, Distrito Federal, Mexico
| | - P Liedo
- El Colegio de la Frontera Sur, Carretera Antiguo Aeropuerto Km 2.5, CP 30700 Tapachula, Chiapas, Mexico
| | - F Díaz-Fleischer
- INBIOTECA, Universidad Veracruzana, Av. Culturas Veracruzanas No. 101, Col. E. Zapata, CP 91090 Xalapa, Veracruz, Mexico
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Arredondo J, Ruiz L, Díaz-Fleischer F. Evaluation of the Host Status of Mature Green Papayas 'Maradol' for the Mexican Fruit Fly (Diptera: Tephritidae). J Econ Entomol 2014; 107:1751-1757. [PMID: 26309263 DOI: 10.1603/ec14096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The suitability of mature green 'Maradol' papaya as a host of Anastrepha ludens (Loew) was studied under field and laboratory conditions. Field tests were conducted on commercial-ripened and spot-ripened fruit in two orchards and during two seasons in the state of Chiapas. Fruits at exportation ripeness are in "commercial ripeness", while fruits that are harvested immediately preceding exportation ripeness are in "spot ripeness." The field tests consisted of forced infestation experiments that evaluated papayas at two ripeness stages: the commercial- or exportation-ripened fruit (green fruits with one or two yellow stripes) and fruit before exportation ripeness called "spot ripeness." These tests were conducted in two orchards and during two seasons in the state of Chiapas, Mexico. Laboratory trials were performed with commercial-ripened fruit only. Fruit from four different postharvest periods (3, 24, 48, and 72 h) were exposed to groups of gravid flies. No larvae emerged from the fruit that was collected in the field experiments. However, some larvae and several fertile flies were obtained from the commercial-ripened fruit 72 h postharvest but not 3, 24, and 48 h postharvest in the laboratory. The results of this study indicate that the commercially ripe fruits of papaya Maradol were resistant to or free from infestation of A. ludens flies under field conditions, though these fruits must be considered nonnatural, conditional host because they became infested in the laboratory.
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Affiliation(s)
- José Arredondo
- Programa Moscafrut SAGARPA-IICA, Camino a los Cacahotales S/N, CP 30680, Metapa de DomÍnguez, Chiapas, Mexico
| | - Lia Ruiz
- Programa Moscafrut SAGARPA-IICA, Camino a los Cacahotales S/N, CP 30680, Metapa de DomÍnguez, Chiapas, Mexico
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Cienfuegos JA, Rotellar F, Baixauli J, Beorlegui C, Sola JJ, Arbea L, Pastor C, Arredondo J, Hernández-Lizoáin JL. Impact of perineural and lymphovascular invasion on oncological outcomes in rectal cancer treated with neoadjuvant chemoradiotherapy and surgery. Ann Surg Oncol 2014; 22:916-23. [PMID: 25190129 DOI: 10.1245/s10434-014-4051-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Indexed: 12/22/2022]
Abstract
BACKGROUND The prognostic significance of perineural and/or lymphovascular invasion (PLVI) and its relationship with tumor regression grade (TRG) in patients with locally advanced rectal cancer (LARC) treated with neoadjuvant chemoradiotherapy (CRT) and surgery. METHODS A total of 324 patients with LARC were treated with CRT and operated on between January 1992 and June 2007. Tumors were graded using a quantitative 5-grade TRG classification and the presence of PLVI was histologically studied. RESULTS At a median follow-up of 79.0 months (range 3-250 months), a total of 80 patients (24.7%) relapsed. The observed 5- and 10-year overall survival (OS) was 83.2 and 74.9 %, respectively. The 5- and 10-year disease-free survival (DFS) was 75.1 and 71.4%, respectively. A significant correlation was found between the TRG and survival (log rank, p < 0.001). The 10-year OS was 32.7% for grade 1, 63.8% for grade 2, 75.0% for grade 3, 90.4% for grade 3+, and 96.0%,for grade 4. The 10-year DFS was 31.8% for grade 1, 58.6% for grade 2, 70.4% for grade 3, 88.4% for grade 3+, and 97.1% for grade 4. In patients with PLVI, the TRG had no impact on survival. When excluding patients with PLVI, the TRG was an independent prognostic factor for OS and DFS. CONCLUSIONS The presence of PLVI is a more powerful prognostic factor than TRG in LARC patients treated with neoadjuvant CRT followed by surgery. PLVI denotes an aggressive phenotype, suggesting that these patients may benefit from adjuvant systemic therapy.
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Affiliation(s)
- J A Cienfuegos
- Department of General Surgery, Clínica Universidad de Navarra, School of Medicine, University of Navarra, Pamplona, Spain,
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Arredondo J, Flores S, Montoya P, Díaz-Fleischer F. Effect of multiple endogenous biological factors on the response of the tephritids Anastrepha ludens and Anastrepha obliqua (Diptera: Tephritidae) to multilure traps baited with BioLure or NuLure in mango orchards. J Econ Entomol 2014; 107:1022-1031. [PMID: 25026661 DOI: 10.1603/ec13194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The physiological state of an insect is likely the most important endogenous factor influencing resource-oriented behavior, and it varies considerably among individuals. Trials were conducted in mango orchards to study the effect of multiple endogenous biological factors on the response of two fly species, Anastrepha ludens (Loew) and Anastrepha obliqua Maquart (Diptera: Tephritidae), to BioLure and NuLure baits. The biological factors of the two fly species that were tested were the following: 1) fertility status-sterile (irradiated) and fertile flies; 2) two types of diets (only sugar and a 3:1 mixture of sugar and hydrolyzed yeast protein; 3) sex, and 4) two sexual maturity conditions (2-4- and 15-18-d-old flies, representing immature and sexually mature flies, respectively, and 2-4-d-old flies treated with methoprene as an artificially induced sexually state male condition). The laboratory-treated flies were released into three different mango orchards. The trials were conducted in four blocks per orchard using eight traps in each block (50:50 BioLure: NuLure). The traps were replaced every 2 d during the 12-d period and the flies per trap per day values were calculated. More protein-fed, fertile, female, immature, and A. obliqua flies were caught compared with the other flies tested. In addition, the traps baited with NuLure attracted more flies than those baited with BioLure. Interaction analyses indicated that the type of bait and the sexual maturity status were the most important factors affecting the responses of the flies. Our study demonstrated that lures attract only a small segment of the fly population, those that have a specific hunger for amino acids-immature flies-and those that were protein-starved. The implications for improved trapping system designs are discussed.
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Ortega PM, Baixauli J, Arredondo J, Bellver M, Sánchez-Justicia C, Ocaña S, Hernández-Lizoain JL. Is the cleft lift procedure for non-acute sacrococcygeal pilonidal disease a definitive treatment? Long-term outcomes in 74 patients. Surg Today 2014; 44:2318-23. [DOI: 10.1007/s00595-014-0923-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Accepted: 01/23/2014] [Indexed: 10/25/2022]
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Aluja M, Arredondo J, Díaz-Fleischer F, Birke A, Rull J, Niogret J, Epsky N. Susceptibility of 15 mango (Sapindales: Anacardiaceae) cultivars to the attack by Anastrepha ludens and Anastrepha obliqua (Diptera: Tephritidae) and the role of underdeveloped fruit as pest reservoirs: management implications. J Econ Entomol 2014; 107:375-388. [PMID: 24665723 DOI: 10.1603/ec13045] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We evaluated the susceptibility of 15 mango cultivars to the attack of Anastrepha ludens (Loew) and Anastrepha obliqua (Macquart) (Diptera: Tephritidae), the main tephritid pests of this crop in Mexico. In a field experiment, bagged fruit-bearing branches were exposed to gravid females of both fly species. Infestation rates, developmental time, adult eclosion, and F1 adult longevity, fecundity, and fertility were recorded, ranking cultivars in terms of susceptibility to fly attack and development. We also compared the volatile profile in selected resistant and susceptible cultivars in search of possible correlations. In a second experiment, clutch size for A. ludens was determined in each cultivar. Infestation rates, developmental time, and F1 demographic parameters varied sharply among cultivars and between fly species for bagged fruit. Cultivars 'Vishi,' '74-82,' and 'Brooks' were most susceptible to A. ludens infestation while "Tommy,' 'Sensation,' and 'Ataulfo "niño"' (parthenocarpic fruit) were most susceptible to A. obliqua infestation. 'Edward,' 'Kent,' 'Brooks late,' 'Palmer, and 'Ataulfo' exhibited tolerance to attack of both fly species. Fruit of susceptible and resistant cultivars exhibited unique volatile profiles. Fly development and F1 adult demographic parameters varied significantly among cultivars. A. ludens females laid larger clutches in larger and harder fruit. We highlight the important role of Ataulfo "niño" as pest reservoir if fruit is left unharvested on trees. We discuss the possible use of highly resistant cultivars as trap crops or egg sinks.
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Arredondo J, Rodríguez-Spiteri N, Torre W, Aubá C, Pedano N, Regueira FM. [DIEP flap reconstruction after palliative curettage mastectomy in locally advanced breast cancer]. An Sist Sanit Navar 2013; 36:141-4. [PMID: 23648506 DOI: 10.4321/s1137-66272013000100019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Curettage mastectomy is indicated as a palliative treatment in locally advanced breast cancer. We present our experience with the use of a DIEP flap reconstruction following extensive mastectomy. METHODS We report the case of a patient with very advanced local breast cancer that was subsidiary to aggressive palliative surgery after chemotherapy. RESULTS It was considered that the closure that could be performed with the latissimus dorsi muscle was unsuitable, therefore a DIEP flap was performed. The patient was discharged uneventfully. CONCLUSION The DIEP reconstruction offers great cutaneous extension. It can be a resource in highly selected cases of locally advanced breast cancer in which surgery becomes the main treatment.
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Affiliation(s)
- J Arredondo
- Departamento de Cirugía General, Clínica Universidad de Navarra, Pamplona.
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Arredondo J, Pastor C, Baixauli J, Rodríguez J, González I, Vigil C, Chopitea A, Hernández-Lizoáin JL. Preliminary outcome of a treatment strategy based on perioperative chemotherapy and surgery in patients with locally advanced colon cancer. Colorectal Dis 2013; 15:552-7. [PMID: 23398577 DOI: 10.1111/codi.12119] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Accepted: 05/27/2012] [Indexed: 02/08/2023]
Abstract
AIM Preoperative chemotherapy followed by radical surgery is an attractive treatment for locally advanced colon cancer (LACC) given the promising results of this approach in other locally advanced tumours. The study evaluates the outcome and treatment-related complications of perioperative oxaliplatin- and capecitabine-based chemotherapy and surgery for clinical Stage III colon cancer. METHOD Twenty-two consecutive patients with a CT-staged LACC were included. All were staged at baseline and before surgery. Surgery-related complications and oncological outcome were determined. RESULTS Toxicity was manageable, with 19/22 patients completing the planned chemotherapy protocol. The median time from initial diagnosis to surgery was 65.5 days. The median time from the end of chemotherapy to surgery was 22 days. After neoadjuvant treatment, tumour reduction of 69.5% was observed by CT scan and a 59.9% decrease of SUVmax (standard uptake value) was achieved on positron emission tomography/CT. No progressive disease was reported during preoperative chemotherapy and surgery was performed in all 22 patients. Four patients developed postoperative complications. After a median postoperative follow-up of 14.4 months, the actuarial overall and disease-free survival rates were 100 and 90%. CONCLUSION Neoadjuvant chemotherapy followed by surgery and chemotherapy for LACC is safe without apparent increase of early and medium-term complications.
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Affiliation(s)
- J Arredondo
- Department of General Surgery, Clínica Universidad de Navarra, Navarra, Spain.
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Maselli RA, Arredondo J, Nguyen J, Lara M, Ng F, Ngo M, Pham JM, Yi Q, Stajich JM, McDonald K, Hauser MA, Wollmann RL. Exome sequencing detection of two untranslated GFPT1 mutations in a family with limb-girdle myasthenia. Clin Genet 2013; 85:166-71. [PMID: 23488891 DOI: 10.1111/cge.12118] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Revised: 02/01/2013] [Accepted: 02/01/2013] [Indexed: 11/26/2022]
Abstract
The term 'limb-girdle myasthenia' (LGM) was first used to describe three siblings with proximal limb weakness without oculobulbar involvement, but with EMG decrement and responsiveness to anticholinesterase medication. We report here that exome sequencing in the proband of this family revealed several sequence variations in genes linked to proximal limb weakness. However, the only mutations that cosegregated with disease were an intronic IVS7-8A>G mutation and the previously reported 3'-UTR c.*22C>A mutation in GFPT1, a gene linked to LGM. A minigene assay showed that IVS7-8A>G activates an alternative splice acceptor that results in retention of the last seven nucleotides of intron 7 and a frameshift leading to a termination codon 13 nucleotides downstream from the new splice site. An anconeus muscle biopsy revealed mild reduction of the axon terminal size and postsynaptic fold simplification. The amplitudes of miniature endplate potentials and quantal release were also diminished. The DNA of the mildly affected father of the proband showed only the intronic mutation along with sequence variations in other genes potentially relevant to LGM. Thus, this study performed in the family originally described with LGM showed two GFPT1 untranslated mutations, which may cause disease by reducing GFPT1 expression and ultimately impairing protein glycosylation.
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Affiliation(s)
- R A Maselli
- Department of Neurology, University of California Davis, Davis, CA, USA
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Cienfuegos JA, Valentí V, Muñoz-Navas M, Rotellar F, Arredondo J, Herraiz M, Zozaya-Larequi FJ, Martínez Regueira F, Frühbeck G, Hernández-Lizoain JL. Gastric necrosis following intragastric balloon placement: urgent sleeve gastrectomy as a rescue and definitive procedure. Endoscopy 2013; 44 Suppl 2 UCTN:E366-7. [PMID: 23012025 DOI: 10.1055/s-0032-1310074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- J A Cienfuegos
- Department of Surgery, University Hospital of Navarra, Pamplona, Spain.
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Martínez Ortega P, Arredondo J. [New frontiers in bariatric surgery: an intervention with multiple possibilities]. An Sist Sanit Navar 2013; 35:363-6. [PMID: 23296216 DOI: 10.23938/assn.0091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Martínez Ortega P, Arredondo J. Nuevas fronteras en cirugía bariátrica: una intervención con múltiples posibilidades. An Sist Sanit Navar 2012. [DOI: 10.4321/s1137-66272012000300001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Arredondo J, Pastor C, Amoza S, Oronoz B, Arbea L, Hernández-Lizoain JL. Portal pneumatosis as a complication of neoadjuvant chemoradiotherapy for rectal cancer: a case report. Colorectal Dis 2011; 13:e383-4. [PMID: 21689357 DOI: 10.1111/j.1463-1318.2011.02690.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- J Arredondo
- Department of General Surgery, Clínica Universidad de Navarra, Pamplona, Spain.
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Abstract
Sensory systems are very susceptible to early environment experience. Mating success depends on the transmission of information from the signaller to the receiver, which means that sensory biases caused by developmental environment are likely to affect sexual selection. We investigated the impact of the developmental visual environment (light spectrum) on male copulation behaviour and female preference in the lekking tephritid Anastrepha ludens. We reared flies in four different light spectrum conditions - red light, blue light, shaded light and darkness - during their first 16 days after emerging from pupae. We found that the light environment experienced during early adulthood affected mating frequency and, in some cases, the latency to copulate, but not copulation duration. Males exposed to any of the three light treatments (red, blue or shaded light) were more frequently chosen as mating partners than dark-reared males. Flies reared under dark conditions exhibited the lowest mating performance out of any of the rearing environments. Under field cage conditions, a slight assortative mating between blue- and red-light-reared flies was detected. Additionally, females reared in blue light and darkness mated less compared with females reared in red and shaded light. Our data demonstrate that male mating behaviour is flexible in response to light environment. The findings suggest that light spectrum only weakly affects the direction of sexual selection by female choice; however, dark rearing environments deeply affect mating success.
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Arredondo J, Martí P, Bondía JM, Zozaya G, Cienfuegos JA. Foreign body tumor simulating a gastrointestinal stromal tumor. Rev Esp Enferm Dig 2011; 102:616-7. [PMID: 21039078 DOI: 10.4321/s1130-01082010001000015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Maselli RA, Arredondo J, Cagney O, Mozaffar T, Skinner S, Yousif S, Davis RR, Gregg JP, Sivak M, Konia TH, Thomas K, Wollmann RL. Congenital myasthenic syndrome associated with epidermolysis bullosa caused by homozygous mutations in PLEC1 and CHRNE. Clin Genet 2010; 80:444-51. [PMID: 21175599 DOI: 10.1111/j.1399-0004.2010.01602.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Mutations in the plectin gene (PLEC1) cause epidermolysis bullosa simplex (EBS), which may associate with muscular dystrophy (EBS-MD) or pyloric atresia (EBS-PA). The association of EBS with congenital myasthenic syndrome (CMS) is also suspected to result from PLEC1 mutations. We report here a consanguineous patient with EBS and CMS for whom mutational analysis of PLEC1 revealed a homozygous 36 nucleotide insertion (1506_1507ins36) that results in a reduced expression of PLEC1 mRNA and plectin in the patient muscle. In addition, mutational analysis of CHRNE revealed a homozygous 1293insG, which is a well-known low-expressor receptor mutation. A skin biopsy revealed signs of EBS, and an anconeus muscle biopsy showed signs of a mild myopathy. Endplate studies showed fragmentation of endplates, postsynaptic simplification, and large collections of thread-like mitochondria. Amplitudes of miniature endplate potentials were diminished, but the endplate quantal content was actually increased. The complex phenotype presented here results from mutations in two separate genes. While the skin manifestations are because of the PLEC1 mutation, footprints of mutations in PLEC1 and CHRNE are present at the neuromuscular junction of the patient indicating that abnormalities in both genes contribute to the CMS phenotype.
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Affiliation(s)
- R A Maselli
- Department of Neurology, University of California Davis, USA.
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Cienfuegos JA, Lozano MD, Rotellar F, Martí P, Pedano N, Arredondo J, Bellver M, Sola JJ, Pardo F. Solid pseudopapillary tumor of the pancreas (SPPT): Still an unsolved enigma. Rev esp enferm dig 2010; 102:722-8. [DOI: 10.4321/s1130-01082010001200009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Aluja M, Díaz-Fleischer F, Arredondo J, Valle-Mora J, Rull J. Effect of cold storage on larval and adult Anastrepha ludens (Diptera: Tephritidae) viability in commercially ripe, artificially infested Persea americana 'Hass'. J Econ Entomol 2010; 103:2000-2008. [PMID: 21309219 DOI: 10.1603/ec09425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Commercially ripe 'Hass' avocados, Persea americana Mill, artificially exposed to wild Anastrepha ludens (Loew) (Diptera: Tephritidae) females 24 h after harvest were placed in a cold storage facility to determine the effect of low temperature on larval survival and adult viability. Fruit were left for 3, 6, 9, and 12 d in a cold room at 5 degrees C followed by a 20-25-d period at ambient temperature to allow for larval development and pupation. Hass avocados and grapefruit, Citrus paradisi Macfadyen, maintained at ambient temperature served as controls. Overall, only 0.23% of the Hass avocados and 19.30% of the grapefruit were infested. The number of infested fruit increased with decreasing exposure time to cold. Puparia from cold-treated Hass avocados were significantly smaller than those stemming from cold-treated grapefruit. Hass avocados exposed for 12 d to 5 degrees C yielded no puparia, and those exposed for 6 and 9 d yielded 22 and two puparia, respectively, but no adults. Although Hass avocados exposed to cold temperature for 3 d yielded adults that reached sexual maturity (N = 16), females laid inviable eggs. Grapefruit exposed to cold for 12 d yielded normal-sized puparia (but no adults), whereas those exposed over 9 d yielded females able to lay viable eggs. We conclude that exposing fruit to cold storage after packing and during transport represents an effective risk-mitigating procedure in the highly improbable event that a gravid A. ludens female might lay eggs in a commercially ripe Hass avocado that had been left unprotected in a packinghouse.
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Affiliation(s)
- M Aluja
- Instituto de Ecología, A.C., Apartado Postal 63, 91000 Xalapa, Veracruz, Mexico.
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Cienfuegos JA, Baixauli J, Zozaya G, Bueno A, Arredondo J, Regueira FM, Angós R, Hernández-Lizoáin JL, Idoate MA. Peutz-Jeghers syndrome and duodeno-jejunal adenocarcinoma--therapeutic implications. Rev Esp Enferm Dig 2010; 101:875-9. [PMID: 20082550 DOI: 10.4321/s1130-01082009001200009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The Peutz-Jeghers syndrome (PJS) is an autosomal dominant hamartomatous poliposis describred in 1921. Hemminki in 1997 described the presence of LKB-1 mutation tumor-suppressor gen.The patients with PJS develop a higher cumulative incidence of gastrointestinal, pancreas and extraintestinal tumors, being occasion of a renew interest on hamartomatous polyposis syndromes regarding the clinical care, cancer surveillance treatment and long term follow-up.We report the case of a 38 years old male, diagnosed of PJS who developed a multiple adenocarcinoma in duodenum and yeyunum. Surgically treated and with a long-term free disease survival of 11 years represents the sixth case reported in the spanish literature of PJS associated with a gastrointestinal tumor.A critical review, molecular alterations and the established criteria of tumor screening and surveillance are reviewed.
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Affiliation(s)
- J A Cienfuegos
- Departments of General Surgery, Digestive Diseases, Clínica Universidad de Navarra, Pamplona,Spain.
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Cienfuegos JA, Rotellar F, Valentí V, Arredondo J, Pedano N, Bueno A, Vivas I. The celiac axis compression syndrome (CACS): critical review in the laparoscopic era. Rev esp enferm dig 2010; 102:193-201. [DOI: 10.4321/s1130-01082010000300006] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Maselli RA, Ng JJ, Anderson JA, Cagney O, Arredondo J, Williams C, Wessel HB, Abdel-Hamid H, Wollmann RL. Mutations in LAMB2 causing a severe form of synaptic congenital myasthenic syndrome. J Med Genet 2009; 46:203-8. [PMID: 19251977 PMCID: PMC2643050 DOI: 10.1136/jmg.2008.063693] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Background: We describe a severe form of congenital myasthenic syndrome (CMS) associated with congenital nephrosis and ocular malformations caused by two truncating mutations in the gene encoding the laminin β2 subunit (LAMB2). Methods and results: Mutational analysis in the affected patient, who has a history of a serious untoward reaction to treatment with acetylcholinesterase inhibition, revealed two frame-shifting heteroallelic mutations, a maternally inherited 1478delG and a paternally inherited 4804delC. An anconeus muscle biopsy demonstrated a profound distortion of the architecture and function of the neuromuscular junction, which was strikingly similar to that seen in mice lacking laminin β2 subunit. The findings included: pronounced reduction of the axon terminal size with encasement of the nerve endings by Schwann cells, severe widening of the primary synaptic cleft and invasion of the synaptic space by the processes of Schwann cells, and moderate simplification of postsynaptic folds and intact expression of the endplate acetylcholinesterase. The endplate potential quantal content was notably reduced, while the frequencies and amplitudes of miniature endplate potentials were only moderately diminished and the decay phases of miniature endplate potentials were normal. Western blot analysis of muscle and kidney tissue and immunohistochemistry of kidney tissue showed no laminin β2 expression. Conclusion: This case, which represents a new type of synaptic CMS, exemplifies the wide variability of phenotypes associated with LAMB2 mutations and underscores the fundamental role that laminin β2 plays in the development of the human neuromuscular junction.
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Affiliation(s)
- R A Maselli
- Department of Neurology, University of California Davis, Davis, CA, 95618, USA.
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Chernyavsky AI, Arredondo J, Galitovskiy V, Qian J, Grando SA. Structure and function of the nicotinic arm of acetylcholine regulatory axis in human leukemic T cells. Int J Immunopathol Pharmacol 2009; 22:461-72. [PMID: 19505399 DOI: 10.1177/039463200902200223] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Although acetylcholine (ACh) is widely known as a neurotransmitter, it also functions as a local humoral factor translating environmental stimuli into alterations in T cell development and function. The cholinergic components present in neurons are expressed in T cells where they constitute an independent cholinergic system. Both non-immunologic and immunologic stimulations can alter expression and function of cholinergic elements in T cells. Recent studies have convincingly demonstrated regulation of immune system by auto/paracrine ACh, which provides a basis for development of new immunomodulatory therapies with nicotinic agonists. The purpose of our research is to integrate information about the structure and activity of the ACh regulatory axis with the phenotypic and functional alterations of T cells during their development and commitment. In this study, we used the Ach producing human leukemic T cell line CCRF-CEM (CEM) to investigate auto/paracrine mechanisms of T cell regulation through the nicotinic class of ACh receptors (nAChRs). The intact CEM expressed alpha3, alpha5, alpha6, alpha7, alpha 9, beta2 and beta4 nAChR subunits. Stimulation of CEM with 10 microg/ml of phytohemagglutinin (PHA) for 16 h upregulated expression of the alpha3, alpha5, alpha7, alpha9 and beta2 and downregulated that of alpha6 and beta4 subunits, indicating that TCR activation leads to overexpression of high Ca2+-permeable ACh-gated ion channels. Activation of alpha7- and alpha3 AChRs predominantly abrogated PHA-dependent upregulation of the pro-inflammatory cytokine TNF-alpha and IFN-gamma receptors, respectively, at the mRNA and protein levels. Signaling through alpha7 and alpha3 nAChRs also significantly (p<0.05) altered expression of the cell state regulators p21 and Bcl-2, respectively, suggesting that downregulation of inflammation via nAChRs includes effects on the T cell cycle progression and apoptosis. These findings indicate that constant stimulation of alpha7 and alpha3 nAChRs by endogenously released ACh controls T cell activation and that signaling downstream of distinct nAChR subtypes targets specific inflammatory and cell cycle genes. Learning the cholinergic pharmacology of inflammation should allow to regulate specific types of immune reactions by selectively activating or blocking the types of nAChRs expressed by the immune cells mediating specific immune reactions.
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Affiliation(s)
- A I Chernyavsky
- Center for Immunology and Departments of Dermatology and Biological Chemistry, University of California, Irvine, CA, USA
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Díaz-Fleischer F, Arredondo J, Flores S, Montoya P, Aluja M. There is no magic fruit fly trap: multiple biological factors influence the response of adult Anastrepha ludens and Anastrepha obliqua (Diptera: Tephritidae) individuals to MultiLure traps baited with BioLure or NuLure. J Econ Entomol 2009; 102:86-94. [PMID: 19253622 DOI: 10.1603/029.102.0113] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Field-cage experiments were performed to determine the effectiveness of MultiLure traps (Better World MFG Inc., Fresno, CA) baited with NuLure (Miller Chemical and Fertilizer Corp., Hanover, PA) or BioLure (Suterra LLC, Inc., Bend, OR) in capturing individually marked Mexican fruit fly, Anastrepha ludens (Loew), and West Indian fruit fly, Anastrepha obliqua (Macquart) (Diptera: Tephritidae), of both sexes. Experimental treatments involved wild and laboratory-reared flies of varying ages (2-4 and 15-18 d) and dietary histories (sugar only, open fruit, open fruit plus chicken feces, and hydrolyzed protein mixed with sugar). Data were divided into two parts: total captures over a 24-h period and trap visits/landings, entrances into interior of trap ,and effective captures (i.e., drowning in liquid bait or water) over a 5-h detailed observation period (0600-1100 hours). The response to the two baits varied by fly species, gender, physiological state, age, and strain. Importantly, there were several highly significant interactions among these factors, underlining the complex nature of the response. The two baits differed in attractiveness for A. obliqua but not A. ludens. The effect of strain (wild versus laboratory flies) was significant for A. ludens but not A. obliqua. For effect of dietary history, adults of both species, irrespective of sex, were significantly less responsive to both baits when fed on a mixture of protein and sugar when compared with adults fed the other diets. Finally, we confirmed previous observations indicating that McPhail-type traps are quite inefficient. Considering the total 24-h fly tenure in the cage, and independent of bait treatment and fly type (i.e., strain, adult diet, gender and age), of a total of 2,880 A. obliqua and 2,880 A. ludens adults released into the field cages over the entire study (15 replicates), only 564 (19.6%) and 174 (6%) individuals, respectively, were effectively caught. When only considering the 5-h detailed observation period and independent of bait treatment and fly type, of a total of 785 marked flies that landed on traps (519 females and 266 males, respectively), only 10.3% (144 females and 59 males) and 20.8% (25 females and 18 males) A. obliqua and A. ludens individuals, respectively, ended up being effectively captured. We discuss the practical implications of these findings with respect to developing new baits and designing new traps and to the interpretation of capture results in the field.
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Arredondo J, Chernyavsky AI, Jolkovsky DL, Pinkerton KE, Grando SA. Receptor-mediated tobacco toxicity: acceleration of sequential expression of 5 and 7 nicotinic receptor subunits in oral keratinocytes exposed to cigarette smoke. FASEB J 2007. [DOI: 10.1096/fj.07-9965com] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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