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Sangob Sanit Kabkaew L. Sukontason Pongruk Sribanditmongkol Tunwadee Klong-klaew Chutharat Samerjai Narin Sontigun Kwankamol Limsopatham Kom Sukontason 《Parasitology research》2012,111(6):2235-2240
Flies of the genus Hypopygiopsis are forensically important, as their larvae are found to associate with human corpses. In this study, the ultrastructure of larvae and puparia of Hypopygiopsis tumrasvini Kurahashi is presented using scanning electron microscopy (SEM). The larvae are vermiform-shaped, creamy white, and have a smooth integument. The pseudocephalon of larvae bears sensory structures, i.e., antenna, maxillary palpus, and ventral organ. Two tufts of fresh outgrowths (or cerri) were observed along the dorsal margin of the mouth opening of the first instar; whereas a strong mouth hook was apparent in the second and third instars. Keilin??s organ, the sensory structure, was noticeable on the ventral surface of the thoracic segments in all instars. In the second and third instars, six conspicuous tubercles were present along the peripheral rims of the last abdominal segment. The puparia were relatively large, measuring 7.77?C9.51?mm in length and 3.10?C3.97?mm in width. At the latero-dorsal edge of the first abdominal segment, a cluster of ??125 bubble membranes was seen in young puparia; whereas a minute pupal respiratory horn was observed in old one. An SEM image revealed antler-like projections lined within a chamber of a broken pupal respiratory horn. Comparison on number of the bubble membranes of the other blow fly species was shown and the role of pupal respiratory horn compared with other dipterans was discussed. 相似文献
2.
Sorramon Songveeratham Chumnan Kietpeerakool Surapan Khunamornpong Narisa Sribanditmongkol Jatupol Srisomboon 《Archives of gynecology and obstetrics》2011,283(6):1381-1384
Objective
To evaluate the preceding cervical cytology and factors leading to cytohistologic discrepancy in women with high-grade squamous intraepithelial lesion (HSIL) histology. 相似文献3.
Sukontason K Narongchai P Kanchai C Vichairat K Sribanditmongkol P Bhoopat T Kurahashi H Chockjamsai M Piangjai S Bunchu N Vongvivach S Samai W Chaiwong T Methanitikorn R Ngern-Klun R Sripakdee D Boonsriwong W Siriwattanarungsee S Srimuangwong C Hanterdsith B Chaiwan K Srisuwan C Upakut S Moopayak K Vogtsberger RC Olson JK Sukontason KL 《Parasitology research》2007,101(5):1417-1423
This paper presents and discusses 30 cases of cadavers that had been transferred for forensic entomology investigations to
the Department of Forensic Medicine, Faculty of Medicine, Chiang Mai University, northern Thailand, from 2000 to 2006. Variable
death scenes were determined, including forested area and suburban and urban outdoor and indoor environments. The fly specimens
found in the corpses obtained were the most commonly of the blow fly of family Calliphoridae, and consisted of Chrysomya megacephala (F.), Chrysomya rufifacies (Macquart) Chrysomya villeneuvi Patton, Chrysomya nigripes Aubertin, Chrysomya bezziana Villeneuve, Chrysomya chani Kurahashi, Lucilia cuprina (Wiedemann), Hemipyrellia ligurriens (Wiedemann), and two unknown species. Flies of the family Muscidae [Hydrotaea spinigera Stein, Synthesiomyia nudiseta (Wulp)], Piophilidae [Piophila casei (L.)], Phoridae [Megaselia scalaris (Loew)], Sarcophagidae [Parasarcophaga ruficornis (F.) and three unknown species], and Stratiomyiidae (Sargus sp.) were also collected from these human remains. Larvae and adults of the beetle, Dermestes maculatus DeGeer (Coleoptera: Dermestidae), were also found in some cases. Chrysomya megacephala and C. rufifacies were the most common species found in the ecologically varied death scene habitats associated with both urban and forested
areas, while C. nigripes was commonly discovered in forested places. S. nudiseta was collected only from corpses found in an indoor death scene. 相似文献
4.
Sukontason KL Sribanditmongkol P Chaiwong T Vogtsberger RC Piangjai S Sukontason K 《Parasitology research》2008,103(4):877-887
In forensic investigations, all immature stages of flies (egg, larvae, and puparium) can serve as entomological evidence at death scenes. These insects are primarily used to estimate the post mortem interval (PMI), but can also be involved in the analysis of toxic substances, determining manner of death, and in indicating relocation of a corpse in homicide cases. In this study, we present the morphology of the egg, larvae, and puparium of Hemipyrellia ligurriens, a blow fly species of forensic importance in Thailand. Examination was conducted using scanning electron microscopy (SEM). The egg stage was found to display a relatively wide plastron region (or median hatch line area) that spans almost the entire length of the egg. The median hatch line is oriented in an upright position. External chorionic sculpture of the egg is present in a hexagonal pattern whose reticular boundaries are slightly elevated. In the larval stages, the most prominent morphological changes were detected upon comparison of the first to the second instar; whereas, the differences between second and third instar larvae were less obvious outside of the increase in number of posterior spiracular slits. Most of the major differences involve body size and structure of the anterior and posterior spiracles. Each anterior spiracle in both the second and third instars projects five to seven papillae apically. Each posterior spiracular disc of a third instar exhibits a complete peritreme, three spiracular slits, and a prominent button that is ventromedially located. The puparium is coarctate and features a clustered bubble membrane comprised of approximately 57 mammillate structures positioned dorsolaterally on each side of the first abdominal segment in young puparia. This feature is replaced by short, tubular respiratory horns in aged puparia. This study provides more detailed exposure of important morphological features that can be used for accurate identification of immature stages of H. ligurriens. Information presented can aid in forensic investigations involving this fly species. 相似文献
5.
Tunwadee Klong-klaew Kom Sukontason Pongruk Sribanditmongkol Kittikhun Moophayak Sangob Sanit Kabkaew L. Sukontason 《Parasitology research》2012,111(5):1965-1975
Lucilia porphyrina (Walker) is a blow fly of forensic importance, and shares its geographical distribution with a related forensically important species, Lucilia cuprina (Wiedemann). The immature stages of both species are similar in general appearance; therefore, correct identification should be given special consideration. This study highlighted the main features of L. porphyrina larvae, as observed under light microscopy and scanning electron microscopy. Particular attention is given to the anterior and posterior spiracles, cephalopharyngeal skeleton, and characteristics of the dorsal spines between the prothorax and mesothorax. In the third instar specifically, morphological information on L. porphyrina showed several features that are shared by L. cuprina, and therefore need certain identification to distinguish between them. Such key features are (1) greater posterior spiracle, (2) apparent inner projection between the middle and lower slits of the posterior spiracle, and (3) strongly sclerotized peritreme. The number of papillae on the anterior spiracle may be a supplement, five to nine and three to six in L. porphyrina and L. cuprina, respectively. The key for identifying third instar of forensically important flies in Thailand has been updated to include L. porphyrina. 相似文献
6.
Gopi A Tejwani Ming-Jyh Sheu Pongruk Sribanditmongkol Ajay Satyapriya 《Brain research》1998,797(2):179
We have recently observed that concomitant administration of diazepam to morphine pellet implanted rats results in the inhibition of the development of morphine tolerance and dependence. We have now analyzed μ-opioid receptors in rats treated with morphine and diazepam for 5 days by using
-DAMGO for binding studies. Male Sprague–Dawley rats were made tolerant and dependent by subcutaneous (s.c.) implantation of six morphine pellets (two pellets on the first day, and four on the second day). Diazepam (0.25 mg/kg b.wt) was injected once daily intraperitoneally (i.p.) for 5 days. Control rats were implanted with placebo pellets and injected once daily with saline or diazepam (i.p.). Animals were administered s.c. naloxone (10 mg/kg) to induce naloxone-precipitated withdrawal syndrome on the final day of the experiment (day 5). There was an up-regulation of μ-receptor (Bmax increased) in the spinal cord of morphine tolerant (+139%) and dependent (+155%) rats compared to saline treated animals. Diazepam treatment abolished the up-regulation of μ-receptors in spinal cord of morphine treated rats. In the cortex, Bmax was not affected in morphine tolerant or dependent rats but it decreased by 38% in morphine tolerant and 65% in morphine dependent rats treated with diazepam. The Kd of μ-receptors increased in the cortex, striatum and hypothalamus of morphine dependent rats. Diazepam treatment decreased the Kd of μ-receptors in the cortex of morphine tolerant and hypothalamus of morphine-dependent rats. These results suggest that diazepam treatment antagonizes the up-regulation of CNS μ-receptors observed in morphine tolerant rats. In addition, morphine tolerance and dependence may be associated with conversion of μ-opioid receptors to μ*-constitutive opioid receptors that are less active, and this conversion is prevented in the brain of animals treated with diazepam. 相似文献
7.
Tun K Butcher B Sribanditmongkol P Brondolo T Caragine T Perera C Kent K 《Prehospital and disaster medicine》2005,20(6):455-458
This is a summary of the presentations and discussion of Panel 2.16, Forensic Aspects of Disaster Fatality Management of the Conference, Health Aspects of the Tsunami Disaster in Asia, convened by the World Health Organization (WHO) in Phuket, Thailand, 04-06 May 2005. The topics discussed included issues related to forensic aspects that pertain to the responses to the deaths created by the Earthquake and Tsunami. It is presented in the following major sections: (1) overview of victim identification; (2) resource factors in mass-fatality management; (3) mass-fatality management in protecting public health; and (4) reasons to use deoyxribose nucleic acid (DNA) to identify the deceased. 相似文献
8.
Kom Sukontason Pongruk Sribanditmongkol Ratchadawan Ngoen-klan Tunwadee Klong-klaew Kittikhun Moophayak Kabkaew L. Sukontason 《Parasitology research》2010,106(3):641-646
Lucilia cuprina and Hemipyrellia ligurriens are forensically important blow flies in many countries. The immature stage, in particular the third instar, of both species are generally similar in morphological appearance. In this study, the use of three main characteristics, the posterior spiracle, the dorsal spines between the first and second thoracic segments, and the cephalopharyngeal skeleton, allows for identification of both fly species, with the number of papillae on anterior spiracle being a supportive characteristic in some cases. Comparison of these characteristics is illustrated in detail. 相似文献
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