What's the difference between acinus and saccular?

Acinus


Definition:

  • (n.) One of the small grains or drupelets which make up some kinds of fruit, as the blackberry, raspberry, etc.
  • (n.) A grapestone.
  • (n.) One of the granular masses which constitute a racemose or compound gland, as the pancreas; also, one of the saccular recesses in the lobules of a racemose gland.

Example Sentences:

  • (1) In castrates, the prostatic stroma became thickened, with a large increase in fibrous material between and surrounding each acinus, although smooth muscle cells retained their normal cytology.
  • (2) In 60 consecutive patients clinically suspected of having chronic pancreatitis the serum concentration of the immunoglobulins (IgA, IgG, IgM), the IgG- and IgA-type non-organ-specific autoantibodies against nuclear material (ANA), smooth and striated muscle, mitochondria, basal membrane, and reticulin, and the IgG- and IgA-type pancreas-specific antibodies against islet cells, acinus cells, and ductal cells (DA) were estimated blindly.
  • (3) The summation of findings suggests that endogenous substance P plays a complementary role in the regulation of parasympathetic nerve-induced fluid secretion in the acinus but is minimally involved in degranulation from granular duct cells.
  • (4) Only a single salivary acinus was found infected in 16.6% of the infected ticks, about 70% had up to 10 infected acini while only about 10% had over 25 infected acini per tick.
  • (5) These results suggest that functional catalytic activity of cytochrome P-450IIE1 is preferentially localized in the pericentral zone of the liver acinus, and that most of the induction by pyrazole of P-450IIE1 appears to occur within the pericentral zone.
  • (6) In adult liver there was a heterogeneous distribution of cytochrome P450IA immunoreactivity with cytochrome P450IA mainly present in zone 3 hepatocytes of the liver acinus.
  • (7) Microdissection studies showed that PKL lost its normal perivenous to periportal gradient after partial hepatectomy and became evenly distributed within the liver acinus.
  • (8) The development of a new method to isolate hepatocytes originating from the proximal or distal half of the liver acinus enabled the measurement of total cytochrome P-450 content and of cytochromes P-450b and P-450e mRNAs in these hepatocytes.
  • (9) These results indicated that there is modulation of the expression of the cytochromes P-450b and P-450e genes within the hepatic acinus.
  • (10) The alveoli in each acinus were reduced in size and, in some cases, number--although their stage of differentiation was normal for age--pointing to a disturbance of growth during later fetal life also.
  • (11) Monoclonal antibodies against PR and ER were mainly located in the epithelium of the excretory duct and granular convoluted tubule, but not in the acinus.
  • (12) Clofibrate induced the activities of carnitine acetyltransferase (90-fold), carnitine palmitoyltransferase (3-fold) and NADP-linked malic enzyme (3-fold) to the same level in periportal as in perivenous hepatocytes, suggesting that these enzymes were induced uniformly throughout the liver acinus.
  • (13) We have optimized a cerium-diaminobenzidine-based method for histochemical analysis of glucose-6-phosphatase (G6Pase) activity and have determined quantitative data on the zonal distribution pattern in the liver acinus of fasted male rats.
  • (14) Hepatocytes in the perivenous zone immediately adjacent to the hepatic venules in the liver acinus are positive for GS.
  • (15) The preacinar cells were occasionally observed at the site between acinus and intercalated duct.
  • (16) Thus, in the intact pancreas, acinar cells intercommunicate extensively within each acinus under resting conditions and reduce their coupling during stimulation.
  • (17) cells, but the microsomal GST and cytosolic GR were found to be evenly distributed in the acinus.
  • (18) Numerous micromorphological differences and resemblances between rabbit and cat were found: Acinus 1.
  • (19) In the mammalian liver the distribution of ammonia-detoxifying enzymes, glutamine synthetase (GS) and carbamoylphosphate synthase I (ammonia) (CPS-I), is mutually exclusive in that these enzymes are expressed in two distinct populations of hepatocytes that are zonally demarcated in the liver acinus.
  • (20) During their voyage, they traverse the three acinus zones, and since in each they produce different enzymes, each zone represents a differentiation state of the advancing cell.

Saccular


Definition:

  • (a.) Like a sac; sacciform.

Example Sentences:

  • (1) An atheroma is often associated with saccular aneurysms, but its effect on this pathological process is still unknown.
  • (2) In the cis-trans axis of the Golgi apparatus the following compartments were observed: (a) On the cis face there was a continuous osmiophilic tubular network referred to as the cis element; (b) a cis compartment composed of 3 or 4 NADPase-positive saccules perforated with pores in register forming wells that contained small vesicles; (c) a trans compartment composed of 1 or 2 TPPAse-positive elements underlying the NADPase ones, followed by 1 or 2 CMPase-positive elements that showed a flattened saccular part continuous with a network of anastomotic tubules.
  • (3) The auditory function of the sacculus in amphibians is confirmed and special attention is paid to functional heterogeneity of the receptor epithelium in the saccular maculae.
  • (4) The dipeptides carnosine and homocarnosine have been chromatographically resolved by expanded HPLC and found to be present in saccular nerve in a ratio of approximately 10:1, respectively.
  • (5) Those included 9 cases of saccular aneurysm and 5 cases of fusiform aneurysm (Table 1).
  • (6) Such prosecretory granules, large and irregular in shape, "peeled off" from the stacks of saccules with residual saccular or tubular structures still attached to them, some of the latter forming trans-tubular networks.
  • (7) Carotid angiography demonstrated that the left internal carotid artery was tortuous toward the medial side in the C2 portion, and the saccular aneurysm was present in the anterior temporal artery 3 mm distal from the middle cerebral artery.
  • (8) The saccular orientations are significantly different from those in tetrapods.
  • (9) An in vitro preparation of the saccular nerve, maintained in parallel, served to indicate the potential neural contribution to overall release from the macula.
  • (10) A case was reported of surgically treated saccular aneurysm located at the right posterior temporoparietooccipital artery junction (P3 portion of PCA).
  • (11) The origins of the thin-layer fractions, with respect to sensory and neural elements in the saccular macula samples, are discussed.
  • (12) Although all animals had morphologic evidence of HMD, saccular aeration was more uniform and airway dilatation less evident in HFOV rescue (P less than 0.0001).
  • (13) Immunological staining was found in the secretory granules, some tubular or saccular structures, parts of the rough endoplasmic reticulum, and the cytoplasmic matrix.
  • (14) Saccular aneurysms without relation to any arterial branch are rare.
  • (15) A 19-day-old neonate presented with a massive intracranial hemorrhage which was found at autopsy to be due to a ruptured intracranial saccular aneurysm.
  • (16) An investigation of the time of appearance of vasospasm as seen angiographically after the onset of subarachnoid hemorrhage was carried out on 797 cases of intracranial saccular aneurysm in which operations were performed.
  • (17) The preputial glands are composed of branched saccular glands.
  • (18) The specimens revealed: absence of normal bile ducts; presence of thin-walled tubular or saccular cholangiectases with semicircular and annular fibrous crests, without evidence of superinfection; cholangiectases with secondary acute or chronic-cellular cholangitis, with or without cholangitic abscesses; fibrous cholangitis without ductal dilatation; transformation of bile ducts into fibrous cords which were either solid or contained remnants of bile duct epithelium, and complete loss of bile ducts.
  • (19) This is a report of 54 cases of saccular aneurysms operated upon intracranially with a total operative mortality of 7.4%, poor results in four cases (7.4%) and excellent results in 46 cases (85.1%).
  • (20) However, in these ears the saccular lumens were not obliterated and endolymphatic hydrops did not develop.

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